All-terrain vehicle and its vehicle body

Abstract

The present invention discloses an all-terrain vehicle and its vehicle body. The vehicle body includes: a frame, the frame includes a front part, a middle part and a rear part connected in sequence, the rear part is configured with a power cabin for placing a power assembly, the front part includes a lower mounting bracket and an upper support bracket, the lower mounting bracket is connected to the middle part, and the upper support bracket is detachably connected to both the lower mounting bracket and the middle part; a seat bracket, the seat bracket is detachably arranged in the middle part and defines an installation space for a plurality of components with the bottom of the middle part. The vehicle body according to the embodiment of the present invention can reasonably utilize the lower space, is convenient for installation and disassembly, has good versatility, and is convenient for changing the shape of the vehicle head.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and more particularly to an all-terrain vehicle and its vehicle body. Background Art

[0002] An all-terrain vehicle refers to a vehicle that can travel on any terrain and can move freely on terrains where ordinary vehicles are difficult to maneuver. It is commonly known as a beach vehicle in China. This type of vehicle has multiple uses and is not restricted by road conditions. It is widely used in North America and Western Europe and shows an increasing trend year by year.

[0003] In related technologies, in an all-terrain vehicle, the seat bracket is usually welded to the vehicle frame as a whole. After the seat bracket and the vehicle frame are welded, the size of the welded structural part is large, it is not easy to ensure dimensional accuracy, and it hinders the utilization of the lower space. In addition, different front-end shapes and different additional components correspond to different vehicle frames. If the front-end shape and additional components need to be changed, the vehicle frame needs to be redesigned, resulting in high costs and poor versatility. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. For this reason, an object of the present invention is to provide a vehicle body of an all-terrain vehicle, which can reasonably utilize the lower space, is convenient for installation and disassembly, has good versatility, and is convenient for changing the front-end shape.

[0005] The present invention further provides an all-terrain vehicle.

[0006] According to an embodiment of the first aspect of the present invention, a vehicle body of an all-terrain vehicle is provided, including: a vehicle frame, the vehicle frame includes a front part, a middle part, and a rear part connected in sequence, the rear part is configured with a power compartment for placing a power assembly, the front part includes a lower mounting frame and an upper support frame, the lower mounting frame is connected to the middle part, and the upper support frame is detachably connected to both the lower mounting frame and the middle part; a seat bracket, the seat bracket is detachably disposed in the middle part and defines an installation space for a plurality of components with the bottom of the middle part.

[0007] According to the embodiment of the present invention, on the one hand, the seat bracket can facilitate the installation and fixation of components, reasonably utilize the internal space of the cockpit, on the other hand, it can ensure the accuracy dimensions of the seat bracket itself, and is convenient for replacement and maintenance, which can reduce the maintenance and replacement costs of the all-terrain vehicle. In addition, the front part of the vehicle frame includes a lower mounting frame and an upper support frame, and the upper support frame is a detachable component, which can facilitate changing the front-end shape and adding components.

[0008] According to some specific embodiments of the present invention, the middle part includes: an outer tube, an inner longitudinal beam, and a bottom plate. The inner longitudinal beam is located inside the outer tube, the bottom plate is connected between the outer tube and the inner longitudinal beam, and the bottom plate forms the bottom of the installation space.

[0009] According to some specific embodiments of the present invention, there are two inner longitudinal beams, and the two inner longitudinal beams are arranged transversely opposite to each other, and the two inner longitudinal beams define an installation space for the drive shaft of the all-terrain vehicle.

[0010] According to some specific embodiments of the present invention, a support bar is connected between the two inner longitudinal beams.

[0011] According to some specific embodiments of the present invention, the middle part further includes: an inner cross beam, the inner cross beam is connected between the inner longitudinal beam and the outer tube, the bottom plate is connected between the outer tube, the inner longitudinal beam and the inner cross beam, and a part of the outer tube, the inner cross beam, and a part of the inner longitudinal beam form a groove on the bottom plate, and the groove is a part of the installation space.

[0012] According to some specific embodiments of the present invention, the middle part further includes: an inner inclined beam, the inner inclined beam is connected between the inner longitudinal beam and the outer tube and is located in front of the inner cross beam, and the inner inclined beam extends forward obliquely in the direction from the inner longitudinal beam to the outer tube.

[0013] According to some specific embodiments of the present invention, there are multiple outer tubes, and the multiple outer tubes are connected in sequence. The outer tube located at the front side is connected to the front end of the inner longitudinal beam, and the outer tube located at the rear side is connected to the rear end of the inner longitudinal beam.

[0014] According to some specific embodiments of the present invention, the multiple outer tubes include: a first outer tube, a second outer tube, and a third outer tube. Both the first outer tube and the second outer tube are two and are both distributed outside the two inner longitudinal beams. The first outer tube is obliquely connected between the inner longitudinal beam and the second outer tube. The third outer tube is connected to the rear ends of the two inner longitudinal beams and is respectively connected to the two second outer tubes at both ends.

[0015] According to some specific embodiments of the present invention, the middle part further includes: a front inclined tube and

[0016] a front support frame. The front support frame is connected to the first outer tube. The front inclined tube extends forward obliquely from bottom to top. The lower end of the front inclined tube is detachably connected to the connection part of the first outer tube and the second outer tube, and the upper end of the front inclined tube is connected to the upper part of the front support frame.

[0017] According to some specific embodiments of the present invention, the middle part further includes: a rear inclined pipe, which extends obliquely backward from bottom to top, the lower end of the rear inclined pipe is connected to the rear end of the second outer pipe, and the upper parts of the rear inclined pipes are commonly connected to an upper cross beam.

[0018] According to some specific embodiments of the present invention, the first outer pipe, the second outer pipe, the third outer pipe, the front inclined pipe and the rear inclined pipe are separate parts from each other, and the cross section of each of them is rectangular.

[0019] According to some specific embodiments of the present invention, the middle part further includes a steering wheel bracket and a gear shift bracket, the steering wheel bracket is connected to the front support frame, and the gear shift bracket is welded to the steering wheel bracket as a whole.

[0020] According to some specific embodiments of the present invention, the vehicle body of the all-terrain vehicle further includes: a roll cage, the roll cage is installed on the middle part, and the roll cage and the middle part jointly define a cockpit.

[0021] According to some specific embodiments of the present invention, the roll cage includes: side guard bars, the side guard bars are connected to the rear inclined pipe, and the side guard bars are connected to the front inclined pipe to form a closed loop.

[0022] According to some specific embodiments of the present invention, the side guard bar includes: a front upper pipe section, which extends at the top and front of the cockpit, the lower end of the front upper pipe section is connected to the upper end of the front inclined pipe; a rear pipe section, which extends at the rear of the cockpit, the upper end of the rear pipe section is connected to the rear end of the front upper pipe section, and the lower part of the rear pipe section is connected to the rear inclined pipe; a lower pipe section, which extends at the bottom of the cockpit, the front end of the lower pipe section is detachably connected to the lower end of the front inclined pipe, and the rear end of the lower pipe section is detachably connected to the lower end of the rear pipe section.

[0023] According to some specific embodiments of the present invention, the lower pipe section includes a horizontal section and an inclined section connected in sequence, the front end of the horizontal section is detachably connected to the lower end of the front inclined pipe, the inclined section extends obliquely backward and upward from the horizontal section, and the rear end of the inclined section is connected to the lower end of the rear pipe section.

[0024] According to some specific embodiments of the present invention, the roll cage further includes: a plurality of cross bars, there are two side guard bars and they are distributed on both sides of the cockpit, and a plurality of the cross bars are connected between the two side guard bars.

[0025] According to some specific embodiments of the present invention, the rear part includes two lower side beams, both of the two lower side beams are connected to the rear of the middle part, and the distance between the two lower side beams shows a decreasing trend from front to back.

[0026] According to some specific embodiments of the present invention, a third outer tube is connected to the front ends of the two lower side beams, and a front mounting member for mounting a power assembly is provided on the third outer tube.

[0027] According to some specific embodiments of the present invention, a rear lower longitudinal beam is connected between each of the lower side beams and the third outer tube.

[0028] According to some specific embodiments of the present invention, an intermediate cross beam is further connected between the two lower side beams, and a rear mounting member for mounting a power assembly is provided on the intermediate cross beam.

[0029] According to some specific embodiments of the present invention, the power assembly includes an engine, and there are two rear mounting members which are arranged at intervals.

[0030] According to some specific embodiments of the present invention, a detachable differential bracket is connected between the two lower side beams.

[0031] According to some specific embodiments of the present invention, a rear floor is connected between the two lower side beams.

[0032] According to some specific embodiments of the present invention, the rear floor is configured with two longitudinal reinforcing ribs and a plurality of transverse reinforcing ribs. The distance between the two longitudinal reinforcing ribs gradually increases from the rear to the front. The plurality of transverse reinforcing ribs are arranged at intervals in the front-rear direction. Each end of each transverse reinforcing rib is respectively connected to the two longitudinal reinforcing ribs. A differential mounting hole is provided on the transverse reinforcing rib, and a concave pit is provided on the longitudinal reinforcing rib.

[0033] According to some specific embodiments of the present invention, the rear part further includes two upper side beams. The two upper side beams are connected to the rear of the middle part. The two upper side beams are located above the two lower side beams. The distance between the two upper side beams shows a decreasing trend from the front to the rear.

[0034] According to some specific embodiments of the present invention, a detachable intermediate cross bar is further provided between the two upper side beams. The intermediate cross bar is provided with a top mounting member for mounting a power assembly. The power assembly includes an engine, and the top mounting member is used to fix the cylinder head of the engine.

[0035] According to some specific embodiments of the present invention, a rear upper cross beam and a detachable transverse bracket are provided between the two upper side beams. The two ends of the rear upper cross beam are respectively connected to the rear ends of the two upper side beams. The transverse bracket is located in front of the rear upper cross beam, and a muffler upper mounting plate is provided on the rear upper cross beam.

[0036] According to some specific embodiments of the present invention, a rear swing arm left rear mounting vertical beam is connected between the upper side beam and the lower side beam on one side, and the lower side beam is provided with a rear swing arm left front mounting plate located in front of the rear swing arm left rear mounting vertical beam and disconnected from the upper side beam; a rear swing arm right rear mounting vertical beam is connected between the upper side beam and the lower side beam on the other side, and the lower side beam is provided with a rear swing arm right front mounting plate located in front of the rear swing arm right rear mounting vertical beam and disconnected from the upper side beam.

[0037] According to some specific embodiments of the present invention, the lower side beam on one side is provided with a left reinforcing plate connecting the rear swing arm left front mounting plate and the rear swing arm left rear mounting vertical beam; the lower side beam on the other side is provided with a right reinforcing plate connecting the rear swing arm right front mounting plate and the rear swing arm right rear mounting vertical beam.

[0038] According to some specific embodiments of the present invention, the vehicle body of the all-terrain vehicle further includes: a left rear suspension, the left rear suspension includes a left wheel axle support, an upper left swing arm, a lower left swing arm and a left shock absorber, the upper left swing arm, the lower left swing arm and the left shock absorber are all connected to the left wheel axle support, the front end of the upper left swing arm and the front end of the lower left swing arm are mounted on the rear swing arm left front mounting plate, the rear end of the upper left swing arm and the rear end of the lower left swing arm are mounted on the rear swing arm left rear mounting vertical beam, and the upper end of the left shock absorber is mounted on the corresponding upper side beam; a right rear suspension, the right rear suspension includes a right wheel axle support, an upper right swing arm, a lower right swing arm and a right shock absorber, the upper right swing arm, the lower right swing arm and the right shock absorber are all connected to the right wheel axle support, the front end of the upper right swing arm and the front end of the lower right swing arm are mounted on the rear swing arm right front mounting plate, the rear end of the upper right swing arm and the rear end of the lower right swing arm are mounted on the rear swing arm right rear mounting vertical beam, and the upper end of the right shock absorber is mounted on the corresponding upper side beam.

[0039] According to some specific embodiments of the present invention, the lower end of the rear swing arm left rear mounting vertical beam is provided with a rear stabilizer bar left mounting seat, the lower end of the rear swing arm right rear mounting vertical beam is provided with a rear stabilizer bar right mounting seat, a rear stabilizer bar is connected between the rear stabilizer bar left mounting seat and the rear stabilizer bar right mounting seat, and both ends of the rear stabilizer bar are respectively connected to the lower left swing arm and the lower right swing arm through connecting rods.

[0040] According to some specific embodiments of the present invention, the lower end of the rear swing arm left rear mounting vertical beam is provided with a left mounting plate, the lower end of the rear swing arm right rear mounting vertical beam is provided with a right mounting plate, and a towing mounting seat is provided between the left mounting plate and the right mounting plate.

[0041] According to some specific embodiments of the present invention, the left mounting plate is provided with a left avoidance hole, the right mounting plate is provided with a right avoidance hole, and the rear stabilizer bar passes through the left avoidance hole and the right avoidance hole.

[0042] According to some specific embodiments of the present invention, a muffler lower mounting plate is further provided between the left mounting plate and the right mounting plate, and the muffler lower mounting plate is located above the trailer mounting seat.

[0043] According to some specific embodiments of the present invention, the distance between the left rear mounting vertical beam of the rear swing arm and the right rear mounting vertical beam of the rear swing arm decreases from top to bottom.

[0044] According to some specific embodiments of the present invention, an upper cross beam is connected between the front ends of the two upper side beams, and a controller bracket for mounting a controller is provided on the upper cross beam and the upper side beam on the right side.

[0045] According to some specific embodiments of the present invention, the lower mounting frame includes: a swing arm bracket and a bottom sheet metal; the middle part further includes: a front support frame, and the swing arm bracket is connected to the front end of the bottom sheet metal and the front end of the front support frame; the lower end of the upper support frame is detachably mounted on the bottom sheet metal, and the rear end of the upper support frame is detachably mounted on the front support frame.

[0046] According to an embodiment of the second aspect of the present invention, an all-terrain vehicle is provided, including the vehicle body of the all-terrain vehicle according to the embodiment of the first aspect of the present invention.

[0047] The all-terrain vehicle according to the embodiment of the present invention, by using the vehicle body of the all-terrain vehicle according to the embodiment of the first aspect of the present invention, has the advantages of high space utilization rate, convenient disassembly and assembly, and easy modification of the front head shape.

[0048] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0050] Figure 1 and Figure 2 are schematic views of different angles of the frame of the vehicle body of the all-terrain vehicle according to the embodiment of the present invention.

[0051] Figure 3 and Figure 4 are schematic views of different angles of the frame, roll cage and seat of the vehicle body of the all-terrain vehicle according to the embodiment of the present invention.

[0052] Figure 5 is a schematic layout diagram of the power assembly of the vehicle body of the all-terrain vehicle according to the embodiment of the present invention.

[0053] Figure 6An exploded view of the rear part of the frame of the vehicle body of an all-terrain vehicle according to an embodiment of the present invention.

[0054] Figure 7 and 8 Schematic diagrams of different angles of the rear part of the frame of the vehicle body of an all-terrain vehicle according to an embodiment of the present invention.

[0055] Figure 9 A schematic diagram of the rear floor board of the vehicle body of an all-terrain vehicle according to an embodiment of the present invention.

[0056] Figure 10 A schematic layout diagram of the hybrid power assembly of the vehicle body of an all-terrain vehicle according to an embodiment of the present invention.

[0057] Figure 11 A schematic layout diagram of the range-extended power assembly of the vehicle body of an all-terrain vehicle according to an embodiment of the present invention.

[0058] Figure 12 A schematic layout diagram of the fuel-powered power assembly of the vehicle body of an all-terrain vehicle according to an embodiment of the present invention.

[0059] Figure 13 A schematic layout diagram of the rear suspension of the vehicle body of an all-terrain vehicle according to an embodiment of the present invention.

[0060] Figure 14 A schematic layout diagram of the muffler of the vehicle body of an all-terrain vehicle according to an embodiment of the present invention.

[0061] Figure 15 A schematic structural diagram of the front part of the frame of the vehicle body of an all-terrain vehicle according to an embodiment of the present invention.

[0062] Reference numerals:

[0063] Cockpit 10; Power compartment 20; Frame 30; Front part 31; Rocker arm bracket 311; Bottom sheet metal 312; Lower mounting bracket 313; Upper support frame 314;

[0064] Middle part 32; Outer tube 321; Inner longitudinal beam 322; Floor board 323; Support bar 324; Inner cross beam 325; Front support frame 326; Inner inclined beam 351;

[0065] First outer tube 327; Second outer tube 328; Front inclined tube 328b; Rear inclined tube 328c;

[0066] Third outer tube 329;

[0067] Rear part 33; lower side beam 331; intermediate cross beam 332; rear mounting 333; upper side beam 334; intermediate cross bar 335; top mounting 336; rear floor panel 339; longitudinal reinforcing rib 3391; transverse reinforcing rib 3392; differential mounting hole 3393; pit 3394; controller bracket 340; upper cross beam 341; rear lower longitudinal beam 342; front mounting 351; differential bracket 352; rear upper cross beam 353; transverse bracket 354; muffler upper mounting plate 355;

[0068] Steering wheel bracket 361; shift bracket 362;

[0069] Rear swing arm left rear mounting vertical beam 371; rear swing arm left front mounting plate 372; rear swing arm right rear mounting vertical beam 373; rear swing arm right front mounting plate 374; left reinforcing plate 375; right reinforcing plate 376;

[0070] Roll cage 60; side guard bar 610; front upper pipe section 611; rear pipe section 612; lower pipe section 613; horizontal section 6131; inclined section 6132; front bracket 614; connecting elbow 615; front top cross bar 621; rear top cross bar 622; rear backrest cross bar 623; rear bottom cross bar 624;

[0071] Left rear suspension 380; left wheel axle support 381; left upper swing arm 382; left lower swing arm 383; left shock absorber 384;

[0072] Right rear suspension 390;

[0073] Rear stabilizer bar left mounting seat 410; rear stabilizer bar right mounting seat 420; rear stabilizer bar 430; connecting rod 440; left mounting plate 450; left clearance hole 451; right mounting plate 460; right clearance hole 461; towing mounting seat 470; muffler lower mounting plate 480;

[0074] Seat bracket 40; driver seat 501; passenger seat 502; middle seat 503; seat cushion 51; backrest 52; buckle position 510; buckle bracket 520; inverted U-shaped bracket 530; driver seat bump 540; hanger 550; passenger seat bump 560;

[0075] Powertrain 200; engine 211; rear drive shaft 212; differential 213; CVT transmission system 214; engine front mount 215; engine rear mount 216; generator 217; intake manifold 218; cylinder head 219; exhaust port 2191;

[0076] Power output system 221; motor 222; gearbox 223;

[0077] Gearbox 231;

[0078] Rear towing device 300; silencer 400 controller. Detailed implementation mode

[0079] The embodiments of the present invention will be described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention will be described in detail below.

[0080] The following reference Figures 1 - 15 Describe an all-terrain vehicle according to an embodiment of the present invention. The all-terrain vehicle is a side-by-side all-terrain vehicle, and the side-by-side all-terrain vehicle has a side-by-side seat.

[0081] As Figure 5 shown, the side-by-side all-terrain vehicle according to an embodiment of the present invention may include: a vehicle body and a power assembly 200. Among them, the power assembly 200 may be a hybrid type, an extended-range type or a fuel type. The power assembly 200 and its layout will be introduced in detail in the following embodiments of the present invention.

[0082] Of course, in some embodiments of the present invention, the side-by-side all-terrain vehicle may further include a left rear suspension 380, a right rear suspension 390, a rear stabilizer bar 430, a rear towing device 300, a silencer 400, etc.

[0083] As Figures 1 - 3 shown, the vehicle body includes a cockpit 10 and a power compartment 20. The power compartment 20 is located behind the cockpit 10. That is to say, the vehicle body is at least divided into two compartments in the front-rear direction. The compartment located on the front side is the cockpit 10, and the cockpit 10 is for the driver and passengers to ride. The driver can perform driving operations in this compartment. The power compartment 20 is located behind the cockpit 10, and the power compartment 20 is used to place and fix the power assembly 200.

[0084] Thus, by arranging the power assembly 200 in the power compartment 20, the power assembly 200 can be isolated outside the cockpit 10, the working noise transmitted by the power assembly 200 to the cockpit 10 can be reduced, and the driving comfort of the all-terrain vehicle can be improved.

[0085] Among them, the vehicle body includes: a frame 30 and a seat bracket 40. The frame 30 includes a front part 31, a middle part 32 and a rear part 33. The front part 31 is used to arrange structures such as a steering system, a front axle and a front suspension system. The middle part

[0086] 32 forms part of the cockpit 10. The middle part 32 mainly constitutes the bottom structure of the cockpit 10. The seat bracket 40 is disposed in the middle part 32 and within the cockpit 10. Seats (such as the driver's seat 501, the passenger seat 502, and the middle seat 503) are mounted and fixed on the seat bracket 40, and the driver and passengers can sit on the corresponding seats. The rear part 33 constitutes at least a part of the power cabin 20. That is to say, the rear part 33 can only constitute a part of the power cabin 20 or can constitute the whole of the power cabin 20.

[0087] Further, the seat bracket 40 can be detachably disposed in the middle part 32, and it defines an installation space for a plurality of components with the bottom of the middle part 32. The components can include power batteries or other components. There can be a plurality of installation spaces. The plurality of installation spaces can respectively place different components or the same components, which can be selected according to actual needs. The seat bracket 40 arranged in this way can, on the one hand, facilitate the installation and fixation of components, make reasonable use of the internal space of the cockpit 10, and on the other hand, ensure the accuracy dimensions of the seat bracket 40 itself, facilitate replacement and maintenance, and can reduce the maintenance and replacement costs of the all-terrain vehicle.

[0088] For example, the power battery is disposed between the seat bracket 40 and the bottom of the middle part 32. In other words, the seat bracket 40 and the middle part 32 of the vehicle frame 30 jointly define an installation space for the power battery. The power battery arranged in this way does not affect the layout of the seats and the seat bracket 40, and can effectively utilize the lower space of the seat bracket 40, which can improve the space utilization rate of the cockpit 10. Moreover, the use of the detachable seat bracket 40 can greatly facilitate the installation and disassembly of the power battery.

[0089] In some embodiments of the present invention, as Figure 1 and Figure 15 shown, the front part 31 includes a lower mounting frame 313 and an upper support frame 314. The upper support frame 314 is located above the lower mounting frame 313. The lower mounting frame 313 is connected to the middle part 32, and the upper support frame 314 is detachably connected to both the lower mounting frame 313 and the middle part 32. Thus, by providing the lower mounting frame 313 and the upper support frame 314 in the front part 31, and the upper support frame 314 being a detachable component, different vehicle heads (such as vehicle heads with different heights) can be changed by replacing the upper support frame 314, and other components (such as a front cargo platform, etc.) can be added, thereby facilitating the change of the overall shape of the vehicle.

[0090] More specifically, as Figure 1 and Figure 15As shown in the figure, the lower mounting bracket 313 includes: a rocker arm bracket 311 and a bottom sheet metal 312. The rocker arm bracket 311 is connected to the front end of the bottom sheet metal 312 and the front end of the front support frame 326. The rocker arm bracket 311 is used to mount the inner ends of the upper rocker arm and the lower rocker arm (not shown in the figure) at the front. The rocker arm bracket 311 can simultaneously mount the inner ends of two upper rocker arms and the inner ends of two lower rocker arms, which can reduce the installation difficulty of the upper rocker arm and the lower rocker arm, and has a simple structure and a light weight. The bottom sheet metal 312 can be used to support and fix the differential of the front axle, which can ensure the installation reliability of the differential.

[0091] The lower end of the upper support frame 314 is detachably mounted on the bottom sheet metal 312, and the rear end of the upper support frame 314 is detachably mounted on the front support frame 326. For example, the upper support frame 314 and the bottom sheet metal 312 are installed through two installation points P, the upper support frame 314 and the front support frame 326 are installed through two installation points P. The two vertical beams at the front of the upper support frame 314 are respectively installed on the bottom sheet metal 312 through bolts and nuts (for example, two sets of bolts and nuts are used for each installation point P), and the two longitudinal beams at the upper part of the upper support frame 314 are respectively installed on the front support frame 326 through bolts and nuts (for example, two sets of bolts and nuts are used for each installation point P).

[0092] The following content will be described in detail for the middle part 32, the rear part 33 and the front part 31 respectively.

[0093] According to a specific embodiment of the present invention, as Figure 1 and Figure 2 shown, the middle part 32 includes: an outer tube 321, an inner longitudinal beam 322 and a bottom plate 323. The inner longitudinal beam 322 is located inside the outer tube 321, and the bottom plate 323 is connected between the outer tube 321 and the inner longitudinal beam 322. The bottom plate 323 forms the bottom of the installation space. It can be understood that the outer tube 321 defines the bottom outer edge of the middle part 32. The inner longitudinal beam 322 extends in the front-rear direction, and both ends of the inner longitudinal beam 322 are connected to the outer tube 321, which plays a role in strengthening the structural strength of the middle part 32 inside, and the bottom plate 323 can play a supporting role. The middle part 32 arranged in this way can ensure the stability of the bottom structure of the cockpit 10.

[0094] Furthermore, there are multiple outer tubes 321, and the multiple outer tubes 321 are connected in sequence. The outer tube 321 located at the front side is connected to the front end of the inner longitudinal beam 322, and the outer tube 321 located at the rear side is connected to the rear end of the inner longitudinal beam 322. Using multiple outer tubes 321 can reasonably define the specific shape of the bottom part of the cockpit 10, so that the structure layout of the middle part 32 is reasonable.

[0095] Specifically, the multiple outer tubes 321 include: a first outer tube 327, a second outer tube 328, and a third outer tube 329. There are two first outer tubes 327 and two second outer tubes 328. The two first outer tubes 327 and the two second outer tubes 328 are both distributed outside the two inner longitudinal beams 322. The first outer tube 327 is obliquely connected between the front end of the inner longitudinal beam 322 and the second outer tube 328. The third outer tube 329 is connected to the rear ends of the two inner longitudinal beams 322, and both ends of the third outer tube 329 are respectively connected to the rear ends of the two second outer tubes 328. Thus, by selecting three types of outer tubes 321, the bottom of the middle part 32 can be defined, and the overall arrangement of the multiple outer tubes 321 set in this way is reasonable, with high structural strength, and can effectively separate the cockpit 10 and the power compartment 20. The welding fixing method can be adopted between the connected two outer tubes 321.

[0096] As Figure 1 and Figure 2 shown, the middle part 32 further includes: a front inclined tube 328b and a front support frame 326. The front support frame 326 is connected to the first outer tube 327. The front inclined tube 328b extends obliquely forward from bottom to top. The lower end of the front inclined tube 328b is detachably connected to the connection part between the first outer tube 327 and the second outer tube 328, and the upper end of the front inclined tube 328b is connected to the upper part of the front support frame 326. The setting of the front inclined tube 328b can effectively enhance the structural strength of the middle part 32, and because the front inclined tube 328b is obliquely arranged, it can effectively protect the driver and passengers in the cockpit 10, and can improve the riding safety of the driver and passengers.

[0097] As Figure 1 and Figure 2 shown, the middle part 32 further includes rear inclined tubes 328c. There can be two rear inclined tubes 328c. The two rear inclined tubes 328c both extend obliquely backward from bottom to top. The lower ends of the two rear inclined tubes 328c are respectively connected to the rear ends of the two second outer tubes 328, and the upper parts of the two rear inclined tubes 328c are commonly connected to an upper cross beam 341. Thus, the rear inclined tubes 328c are obliquely arranged backward. The setting of the rear inclined tubes 328c can effectively enhance the structural strength of the middle part 32, and can effectively protect the driver and passengers in the cockpit 10, and can improve the riding safety of the driver and passengers. In addition, the upper cross beam 341 can separate the cockpit 10 and the power compartment 20, and can ensure the safety of the driver and passengers. The upper cross beam 341 can also play a role in installing the seat bracket 40.

[0098] Among them, the first outer tube 327, the second outer tube 328, the third outer tube 329, the front inclined tube 328b, and the rear inclined tube 328c are separate components from each other, and the cross section of each of them is rectangular. Set in this way, the structural stability of the frame 30 can be improved.

[0099] In some embodiments of the present invention, as Figure 1 and Figure 2 shown, the middle part 32 further includes: a steering wheel bracket 361 and a shift bracket 362. The steering wheel bracket 361 is connected to the front support frame 326. The shift bracket 362 and the steering wheel bracket 361 are arranged on the same side in the left-right direction, for example, arranged on the left side, and the shift bracket 362 is welded to the steering wheel bracket 361 as a whole. Thus, the strength of the shift bracket 362 and the rotating shaft is increased, and the shaking of the shifting mechanism is avoided.

[0100] In some embodiments of the present invention, as Figure 1 and Figure 2 shown, there are two inner longitudinal beams 322. The two inner longitudinal beams 322 are arranged transversely opposite to each other, and the two inner longitudinal beams 322 define an installation space for the drive shaft of the all-terrain vehicle. That is to say, the space between the two inner longitudinal beams 322 is the installation space for the drive shaft. In this way, while the two inner longitudinal beams 322 can improve the bottom structure strength of the frame 30, they can also isolate the drive shaft from other components, thereby ensuring the installation reliability of the drive shaft.

[0101] Optionally, as Figure 1 and Figure 2 shown, a support bar 324 is connected between the two inner longitudinal beams 322. The support bar 324 is used to support the drive shaft. Bearings and bearing seats can be arranged on the drive shaft. The support bar 324 is used to support and fix the bearing seats, and mounting holes for fixing the bearing seats can be arranged at its left and right ends.

[0102] Among them, a groove is provided at the bottom of the middle part 32, and a power battery or other components can be arranged in the groove. The setting of the groove can facilitate the installation and fixation of the power battery or other components. It can accommodate the bottom of the power battery or other components, and can also provide some installation points for the power battery or other components, thereby better ensuring the installation reliability of the power battery or other components.

[0103] Specifically, as Figure 1 and Figure 2 shown, the middle part 32 may further include: an inner cross beam 325. The inner cross beam 325 is connected between the inner longitudinal beam 322 and the outer tube 321. The bottom plate 320 is connected between the second outer tube 328, the third outer tube 329, the inner longitudinal beam 322 and the inner cross beam 325. A part of the second outer tube 328, a part of the third outer tube 329, the inner cross beam 325, and a part of the inner longitudinal beam 322 form a groove on the bottom plate 323, and the groove is a part of the installation space. The setting of the inner cross beam 325 can effectively limit the freedom degree of the components and ensure the placement reliability of the components under the seat bracket 40.

[0104] Further, the all-terrain vehicle may further include: a storage box, which is disposed inside the seat bracket 40 and above the power battery. That is to say, a storage box is provided below the seat and above the power battery. The storage box arranged in this way can make reasonable use of the space at the seat bracket 40, improve the space utilization rate of the cockpit 10, and the storage box arranged in this way can facilitate the driver and passengers to pick up and place items.

[0105] To further strengthen the bottom structural strength of the middle part 32, the middle part 32 further includes: an inner inclined beam 351, which is connected between the inner longitudinal beam 322 and the second outer side tube 328 and is located in front of the inner cross beam 325. The inner inclined beam 351 extends forward obliquely along the direction from the inner longitudinal beam 322 to the second outer side tube 328.

[0106] In some specific embodiments of the present invention, as Figure 3 and Figure 4 shown, the vehicle body further includes: a roll cage 60, which is installed on the middle part 32. The roll cage 60 and the middle part 32 jointly define the cockpit 10, thereby improving the safety of the personnel in the cockpit 10 and indirectly improving the off-road ability of the all-terrain vehicle.

[0107] Specifically, as Figure 3 shown, the roll cage 60 includes: side guard bars 610, the side guard bars 610 are connected to the rear inclined tube 328c, and the side guard bars 610 are connected to the front inclined tube 328b to form a closed loop, thereby further enhancing the structural strength to further improve safety.

[0108] More specifically, the side guard bars 610 include: a front upper tube section 611, a rear tube section 612, and a lower tube section 613.

[0109] The front upper tube section 611 extends at the top and front of the cockpit 10, and the lower end of the front upper tube section 611 is connected to the upper end of the front inclined tube 328b. The rear tube section 612 extends at the rear of the cockpit 10, the upper end of the rear tube section 612 is connected to the rear end of the front upper tube section 611, and the lower part of the rear tube section 612 is connected to the rear inclined tube 328c. The lower tube section 613 extends at the bottom of the cockpit 10, the front end of the lower tube section 613 is detachably connected to the lower end of the front inclined tube 328b, and the rear end of the lower tube section 613 is detachably connected to the lower end of the rear tube section 612.

[0110] Thus, the front upper tube section 611, the rear tube section 612, the lower tube section 613, and the front inclined tube 328b jointly construct the overall shape of the cockpit 10. And in the whole vehicle, since the lower tube section 613 is exposed outside and the lower tube section 613 is detachable, it can facilitate the separate painting of the lower tube section 613, thereby diversifying the appearance of the all-terrain vehicle. In addition, the detachable lower tube section 613 can also facilitate packaging and transportation.

[0111] The front upper pipe section 611 and the rear pipe section 612, as well as the rear pipe section 612 and the lower pipe section 613, are respectively connected by connecting elbows 615. This can not only define the overall shape of the side enclosure bar 610, facilitate the formation of a bending structure, but also reduce the processing and manufacturing difficulty of the front upper pipe section 611, the rear pipe section 612, and the lower pipe section 613.

[0112] Among them, as Figure 3 shown, the lower pipe section 613 includes a horizontally arranged section 6131 and an inclined section 6132 that are connected in sequence. The horizontally arranged section 6131 and the inclined section 6132 are integrally formed. The front end of the horizontally arranged section 6131 is detachably connected to the lower end of the front inclined pipe 328b. The inclined section 6132 extends backward and upward from the horizontally arranged section 6131. The rear end of the inclined section 6132 is connected to the lower end of the rear inclined pipe 328c. In this way, the setting of the inclined section 6132 can not only improve the overall structural strength, but also better protect the personnel in the cockpit 10.

[0113] To further improve the reliability of the lower pipe section 613, the lower pipe section 613 is further detachably connected to the outer pipe 321. Specifically, the horizontally arranged section 6131 of the lower pipe section 613 is detachably connected to the second outer pipe 328. As Figure 3 shown, the horizontally arranged section 613 is mounted on the second outer pipe 328 by two bolts, and the two bolts are arranged at intervals along the length direction of the horizontally arranged section 613.

[0114] Furthermore, as Figure 3 shown, the side enclosure bar 610 further includes: a front bracket 614. The lower end of the front upper pipe section 611 is connected to the upper end of the front inclined pipe 328b through the front bracket 614. The front bracket 614 is detachably connected to both the front upper pipe section 611 and the front inclined pipe 328b. This can facilitate the separate painting of the front bracket 614, thereby diversifying the appearance of the all-terrain vehicle. In addition, the detachable front bracket 614 can also facilitate packaging and transportation.

[0115] In some embodiments of the present invention, as Figure 3 shown, the roll cage 60 further includes: a plurality of cross bars. There are two side enclosure bars 610, which are distributed on both sides (i.e., the left and right sides) of the cockpit 10, and the plurality of cross bars are connected between the two side enclosure bars 610.

[0116] Specifically, the multiple crossbars include: a front top crossbar 621, a rear top crossbar 622, a rear backrest crossbar 623, and a rear bottom crossbar 624. The front top crossbar 621 and the rear top crossbar 622 are located at the top of the cockpit 10, and the front top crossbar 621 is located in front of the rear top crossbar 622. The rear backrest crossbar 623 and the rear bottom crossbar 624 are located at the rear of the cockpit 10, and the rear bottom crossbar 624 is located below the rear backrest crossbar 623. Thus, the overall frame of the roll cage 60 is constructed and has good anti-rollover ability. In addition, it provides a stable installation skeleton for the setting of the ceiling.

[0117] Among them, in order to increase the load-bearing capacity and area of the rear backrest crossbar 623, the rear backrest crossbar 623 can be configured into a similar X-shaped structure and is horizontally arranged in the left-right direction.

[0118] In some specific examples of the present invention, such as Figure 3 and Figure 4 as shown, the vehicle body further includes: a seat, and the seat includes a seat cushion 51 and a backrest 52. The seat cushion 51 is installed on a seat bracket 40, and the backrest 52 is connected to the rear bottom crossbar 624. Thereby, the load-bearing capacity of the backrest 52 is increased, and the comfort and safety of the personnel are improved.

[0119] Specifically, the seat can be detachably installed on the seat bracket 40. The seat arranged in this way is convenient for installation and disassembly, so that the seat can be conveniently replaced and repaired. Among them, the seat includes a seat cushion 51 and a backrest 52. The seat cushion 51 can be detachably installed on the seat bracket 40, and the backrest 52 can be detachably installed on the seat cushion 51. Thus, the seat cushion 51 and the backrest 52 with a split structure can enable the seat cushion 51 and the backrest 52 to be separately manufactured, and the angle of the backrest 52 can be conveniently adjusted.

[0120] Among them, the seat may include: a driver's seat 501, a passenger seat 502, and an intermediate seat 503. The intermediate seat 503 is located between the driver's seat 501 and the passenger seat 502.

[0121] Next, the installation structure of each seat will be described in detail.

[0122] Such as Figure 4 as shown, for the intermediate seat 503, the backrest 52 of the intermediate seat 503 is rotatable relative to the seat cushion 51. The backrest 52 of the intermediate seat 503 is provided with a buckle position 510, and the rear bottom crossbar 624 is provided with a buckle bracket 520 for buckling with the buckle position 510. In this way, when a passenger sits normally on the intermediate seat 503, the backrest 52 can be turned upward, and the buckle bracket 520 is buckled with the buckle position 510 to fix the position of the backrest 52; in some special cases, the buckle position 510 and the buckle bracket 520 can be unfastened, so that the backrest 52 can be turned down and used as a storage rack or an armrest.

[0123] As Figure 4 shown, for the driver's seat 501, the seat bracket 40 is provided with an inverted U-shaped bracket 530. The backrest 52 of the driver's seat 501 is supported backward on the inverted U-shaped bracket 530. For example, the rear surface of the backrest 52 is provided with a corresponding inverted U-shaped groove, and the inverted U-shaped bracket 530 is fitted into the inverted U-shaped groove. Moreover, the backrest 52 of the driver's seat 501 is provided with driver's seat bumps 540 (connected by bolts, for example) connected to the rear bottom cross bar 624. The driver's seat bumps 540 can be two and are arranged at intervals in the left-right direction. Thus, the driver's seat 501 can be reliably fixed and the driving safety of the driver can be ensured.

[0124] As Figure 4 shown, for the passenger seat 502, the rear backrest cross bar 623 is provided with a hanging bracket 550. The upper part of the backrest 52 of the passenger seat 502 is hung on the hanging bracket 550. The lower part of the backrest of the passenger seat 502 is provided with passenger seat bumps 560 (connected by bolts, for example) connected to the rear bottom cross bar 624. The passenger seat bumps 560 can be two and are arranged at intervals in the left-right direction. Thus, the passenger seat 502 can be reliably fixed and the driving safety of the passenger can be ensured.

[0125] In some specific examples of the present invention, the all-terrain vehicle may further include: a controller, which is arranged in the power cabin 20, that is, the controller is arranged in the rear part 33 of the vehicle frame 30, and the controller can be electrically connected to the power assembly 200. The controller can obtain the working state of the power assembly 200 and then reasonably control the power assembly 200 to work according to the known information. Moreover, by arranging the controller in the power cabin 20, on the one hand, the space of the power cabin 20 can be reasonably utilized, and on the other hand, it is convenient for the controller to be connected to the power assembly 200 at the same time. The controller can be located at the upper right of the power assembly 200.

[0126] Specifically, as Figure 1 and Figure 2 shown, the rear part 33 includes two upper side beams 334. An upper cross beam 341 is connected between the front ends of the two upper side beams 334. The upper cross beam 341 and the upper side beam 334 on the right side are provided with a controller bracket 340 for installing the controller. That is to say, the controller is not only installed on the upper side beam 334 on the right side, but also installed on the front upper cross beam 341. The controller installed in this way has good reliability. Among them, there can be multiple controller brackets 340. For example, three. One of the three controller brackets 340 is arranged on the upper side beam 334 on the right side, and the remaining two controller brackets 340 are arranged on the right half of the upper cross beam 341. The controller with three-point fixation has better stability.

[0127] As Figure 1 and Figure 2As shown, the rear part 33 includes two lower side beams 331, which are located below the two upper side beams 334. Both of the two lower side beams 331 are connected to the rear of the middle part 32, for example, the third outer tube 329. The distance between the two lower side beams 331 decreases from front to back. The two lower side beams 331 arranged in this way can gradually reduce the space of the power compartment 20, enabling the power compartment 20 to better install and fix the power assembly 200, and making its structure simpler. Among them, the distance between the two upper side beams 334 decreases from front to back. The two upper side beams 334 arranged in this way can effectively support and fix the cargo hopper, and can better define the power compartment 20 with the two lower side beams 331, making the space of the power compartment 20 appropriate and enabling the power assembly 200 to be reasonably placed.

[0128] In some specific embodiments of the present invention, as Figure 1 、 Figure 2 、 Figures 5 - 8 shown, the front ends of the two lower side beams 331 are connected to the third outer tube 329, and the third outer tube 329 is provided with a front mounting member 351 for mounting the power assembly 200.

[0129] In addition, an intermediate cross beam 332 is also connected between the two lower side beams 331, and the intermediate cross beam 332 is provided with a rear mounting member 333 for mounting the power assembly 200.

[0130] The third outer tube 329 and the intermediate cross beam 332 can play a role in supporting and fixing the power assembly 200. The front mounting member 351 can be connected to the front engine mount of the power assembly 200. The rear mounting members 333 can be two and are spaced apart in the left-right direction on the intermediate cross beam 332. The two rear mounting members 333 can be connected to the rear engine mounts of the power assembly 200. Thus, the engine of the power assembly 200 is stably fixed.

[0131] Furthermore, in order to strengthen the bottom structural strength of the rear part 33 so as to more reliably carry the power assembly 200, a rear lower longitudinal beam 342 is connected between each lower side beam 331 and the third outer tube 329. The rear lower longitudinal beam 342 can extend in the front-rear direction. The front end of the rear lower longitudinal beam 342 is connected to the third outer tube 329, and the rear end of the rear lower longitudinal beam 342 is connected to the lower side beam 331.

[0132] In a further embodiment of the present invention, as Figure 1 、 Figure 2 、 Figures 5 - 8 shown, a detachable differential bracket 352 is connected between the two lower side beams 331. The differential bracket 352 can be installed by bolts to connect the left and right of the middle part of the rear part 33, increasing the left-right rigidity and strength of the frame 30, and at the same time providing a fixed carrier for the differential, increasing the assembly firmness of the differential on the frame 30.

[0133] In addition, a rear bottom plate 339 is connected between two lower side beams 331. The rear bottom plate 339 can further carry a differential. By arranging the rear bottom plate 339 between two lower side beams 331, the installation reliability of the rear bottom plate 339 can be ensured.

[0134] Specifically, as Figure 9 shown, the rear bottom plate 339 is configured with two longitudinal reinforcing ribs 3391 and a plurality of transverse reinforcing ribs 3392. The distance between the two longitudinal reinforcing ribs 3391 gradually increases from the rear to the front. The plurality of transverse reinforcing ribs 3392 are arranged at intervals in the front-rear direction. Both ends of each transverse reinforcing rib 3392 are respectively connected to the two longitudinal reinforcing ribs 3391. A differential mounting hole 3393 is provided on the transverse reinforcing rib 3392, and a concave pit 3394 is provided on the longitudinal reinforcing rib 3391.

[0135] Among them, the rear bottom plate 339 can be formed by stamping a single-piece sheet metal. The two longitudinal reinforcing ribs 3391 with a U-shaped cross-section are symmetrically arranged on the left and right. Each longitudinal reinforcing rib 3391 is distributed at an angle with the center line a extending in the front-rear direction. a can be 5° - 25°, preferably 15°. At the same time, a concave pit 3394 is also provided on the longitudinal reinforcing rib 3391 to locally increase the strength. Two transverse reinforcing ribs 3392 with a U-shaped cross-section are arranged transversely on the rear bottom plate 339. Each transverse reinforcing rib 3392 is provided with two differential mounting holes 3393 for connecting with the differential. The rear bottom plate 339 has a high functional integration degree, reliable integral forming accuracy, light weight, and low comprehensive cost.

[0136] In some specific examples of the present invention, as Figure 5 、 Figure 6 、 Figure 8 and Figure 14 shown, a rear upper cross beam 353 and a detachable transverse bracket 354 are provided between two upper side beams 334. Both ends of the rear upper cross beam 353 are respectively connected to the rear ends of the two upper side beams 334. The transverse bracket 354 is located in front of the rear upper cross beam 353. The rear upper cross beam 353 is provided with a muffler upper mounting plate 355. For example, the transverse bracket 354 can be installed by bolts and nuts. The transverse bracket 354 and the rear upper cross beam 353 enhance the lateral strength of the rear upper part of the vehicle frame 30. And since the transverse bracket 354 is detachable, the overall hoisting of the power assembly 200 can be facilitated. Moreover, the rear upper cross beam 353 also provides an upper mounting point for the muffler 400.

[0137] Furthermore, as Figure 1As shown, a detachable intermediate crossbar 335 is also provided between the two upper side beams 334. The intermediate crossbar 335 is provided with a top mounting member 336 for mounting the power assembly 200. The top mounting member 336 is used to fix the cylinder head of the engine 220, and the top mounting member 336 is the cylinder head lifting lug. That is to say, on the basis of the bottom mounting and fixing of the engine of the power assembly 200, the engine also mounts and fixes its cylinder head through the top mounting member 336. The power assembly 200 arranged in this way can better ensure its stability in the power compartment 20. The top mounting member 336 can be provided with shock-absorbing blocks to reduce the vibration transmitted from the engine to the vehicle frame 30.

[0138] In some embodiments of the present invention, as Figure 1 , Figure 2 , Figures 6 - 8 shown, a rear swing arm left rear mounting vertical beam 371 is connected between the upper side beam 334 and the lower side beam 331 on one side (for example, the left side), and the lower side beam 331 is provided with a rear swing arm left front mounting plate 372 in front of the rear swing arm left rear mounting vertical beam 371. The rear swing arm left front mounting plate 372 is disconnected from the upper side beam 334, that is, the rear swing arm left front mounting plate 372 has no connection with the upper side beam 334 above it.

[0139] A rear swing arm right rear mounting vertical beam 373 is connected between the upper side beam 334 and the lower side beam 331 on the other side (for example, the right side), and the lower side beam 331 is provided with a rear swing arm right front mounting plate 374 in front of the rear swing arm right rear mounting vertical beam 373. The rear swing arm right front mounting plate 374 is disconnected from the upper side beam 334, that is, the rear swing arm right front mounting plate 374 has no connection with the upper side beam 334 above it.

[0140] Furthermore, the lower side beam on one side (for example, the left side) is provided with a left reinforcing plate 375 connecting the rear swing arm left front mounting plate 372 and the rear swing arm left rear mounting vertical beam 371, and the lower side beam 331 on the other side (for example, the right side) is provided with a right reinforcing plate 376 connecting the rear swing arm right front mounting plate 374 and the rear swing arm right rear mounting vertical beam 373.

[0141] Thus, by arranging the rear swing arm left rear mounting vertical beam 371, the rear swing arm left front mounting plate 372, the rear swing arm right rear mounting vertical beam 373, and the rear swing arm right front mounting plate 374, not only can mounting points be provided for the rear swing arms, but also the rear swing arm left front mounting plate 372 and the rear swing arm right front mounting plate 374 adopt a split design, that is, the rear swing arm left front mounting plate 372 and the rear swing arm right front mounting plate 374 are not connected to the two upper side beams 334 above, but are respectively connected to the rear swing arm left rear mounting vertical beam 371 and the rear swing arm right rear mounting vertical beam 373 through the left reinforcing plate 375 and the right reinforcing plate 376. This can increase the local strength, make full use of the space above the rear swing arm left front mounting plate 372 and the rear swing arm right front mounting plate 374, enable different forms of powertrains to be arranged, and increase the strength and reduce the weight.

[0142] Combined Figure 3 As shown, the vehicle body of the all-terrain vehicle includes a left rear suspension 380 and a right rear suspension 390.

[0143] Specifically, the left rear suspension 380 includes a left wheel axle support 381, an upper left swing arm 382, a lower left swing arm 383, and a left shock absorber 384. The upper left swing arm 382, the lower left swing arm 383, and the left shock absorber 384 are all connected to the left wheel axle support 381. The front end of the upper left swing arm 382 and the front end of the lower left swing arm 383 are mounted on the rear swing arm left front mounting plate 372. The rear end of the upper left swing arm 382 and the rear end of the lower left swing arm 383 are mounted on the rear swing arm left rear mounting vertical beam 371. The upper end of the left shock absorber 384 is mounted on the corresponding side beam 334.

[0144] The right rear suspension 390 includes a right wheel axle support, an upper right swing arm, a lower right swing arm, and a right shock absorber. The upper right swing arm, the lower right swing arm, and the right shock absorber are all connected to the right wheel axle support. The front end of the upper right swing arm and the front end of the lower right swing arm are mounted on the rear swing arm right front mounting plate 374. The rear end of the upper right swing arm and the rear end of the lower right swing arm are mounted on the rear swing arm right rear mounting vertical beam 373. The upper end of the right shock absorber is mounted on the corresponding side beam 334.

[0145] Those skilled in the art can understand that for the clarity of the drawings, the specific structure of the right rear suspension 390 is not marked, and the specific structure of the right rear suspension 390 can refer to the left rear suspension 380, and the two are symmetrically arranged in the left-right direction.

[0146] Among them, the distance between the left rear mounting vertical beam 371 of the rear swing arm and the right rear mounting vertical beam 373 of the rear swing arm shows a decreasing trend from top to bottom. The left rear mounting vertical beam 371 and the right rear mounting vertical beam 373 of the rear swing arm arranged in this way can change the mounting axis positions of the upper left swing arm 382 and the lower left swing arm 383, as well as the mounting axis positions of the upper right swing arm and the lower right swing arm, thereby improving the structural stability of the rear part 33 and extending the service life of the vehicle frame 30.

[0147] In some specific examples of the present invention, as Figure 8 and Figure 13 shown, a left mounting seat 410 for the rear stabilizer bar is provided at the lower end of the left rear mounting vertical beam 371 of the rear swing arm, a right mounting seat 420 for the rear stabilizer bar is provided at the lower end of the right rear mounting vertical beam 373 of the rear swing arm, a rear stabilizer bar 430 is connected between the left mounting seat 410 for the rear stabilizer bar and the right mounting seat 420 for the rear stabilizer bar, and both ends of the rear stabilizer bar 430 are bent forward and are respectively connected to the lower left swing arm 383 and the lower right swing arm through connecting rods 440. Thus, the left mounting seat 410 for the rear stabilizer bar and the right mounting seat 420 for the rear stabilizer bar are arranged by using the left rear mounting vertical beam 371 and the right rear mounting vertical beam 373 of the rear swing arm, thereby providing a fixed carrier for the rear stabilizer bar 430 and further increasing the driving stability of the all-terrain vehicle.

[0148] Furthermore, a left mounting plate 450 is provided at the lower end of the left rear mounting vertical beam 371 of the rear swing arm, a right mounting plate 460 is provided at the lower end of the right rear mounting vertical beam 373 of the rear swing arm, a towing mounting seat 470 is provided between the left mounting plate 450 and the right mounting plate 460, and the rear towing device 300 can be mounted on the towing mounting seat 470.

[0149] Among them, the left mounting plate 450 is provided with a left avoidance hole 451, the right mounting plate 460 is provided with a right avoidance hole 461, and the rear stabilizer bar 430 passes through the left avoidance hole 451 and the right avoidance hole 461.

[0150] Even further, further combining Figure 14 shown, a lower mounting plate 480 for the muffler is further provided between the left mounting plate 450 and the right mounting plate 460, and the lower mounting plate 480 for the muffler is located above the towing mounting seat 470. The upper part of the muffler 400 can be connected to the upper mounting plate 355 of the muffler through a shock-absorbing sleeve, bolts and nuts, and the lower part of the muffler 400 can be connected to the lower mounting plate 480 for the muffler through a shock-absorbing sleeve and a necking bolt, thereby realizing the installation and fixation of the muffler 400 without occupying the internal space of the vehicle frame 30, thereby reserving enough space for the power compartment 20 to be suitable for installing different power assemblies.

[0151] By arranging a left mounting plate 450 and a right mounting plate 460 at the rear part of the vehicle frame 30, the left mounting plate 450 and the right mounting plate 460 are connected to the left rear mounting vertical beam 371 and the right rear mounting vertical beam 373 of the rear swing arm, and are connected through a towing mounting seat 470 and a muffler lower mounting plate 480 in the middle, so that the rear part of the vehicle frame 30 is connected into a whole, with relatively high strength. Moreover, the left mounting plate 450 is provided with a left avoidance hole 451 and the right mounting plate 460 is provided with a right avoidance hole 461, which further increases the structural strength and reduces the weight. The rear stabilizer bar 430 passes through the left avoidance hole 451 and the right avoidance hole 461, making the structure more compact and having a high space utilization rate.

[0152] The following will exemplify the arrangement modes of different powertrains 200 on the vehicle frame 30 of the embodiment of the present invention.

[0153] Figure 10 The arrangement mode of a hybrid powertrain is shown. The hybrid powertrain includes an engine 211, a rear transmission shaft 212, a differential 213, etc. The engine 211 includes a CVT transmission system 214, a front engine mount 215 and a rear engine mount 216. The front engine mount 215 is fixed to the front mounting member 351 through bolts and nuts, and the rear engine mount 216 is fixed to the rear mounting member 333 through bolts and nuts. After the vehicle frame 30 is platformized, it can be matched with different powertrains, and only different engine mounts need to be replaced to achieve this. The differential 213 is assembled through bolts from bottom to top, and the front upper part is assembled with the differential bracket 352 through bolts and nuts.

[0154] Among them, the CVT transmission system 214 faces the left side of the vehicle body, the generator 217 faces the right side of the vehicle body, and the intake manifold 218 faces the front of the vehicle body to improve the intake efficiency. The cylinder head 219 is inclined at a certain angle and faces the rear of the vehicle body to reduce the height space of the powertrain. The exhaust port 2191 is inclined at a certain angle and faces the rear of the vehicle body, so that the heat of the exhaust is radiated backward, reducing the influence of the heat on the cockpit 10.

[0155] Figure 11 The arrangement mode of an extended-range powertrain is shown. The extended-range powertrain includes an engine 211, a cylinder head 219, an exhaust port 2191, a generator 217, a power output system 221, a motor 222, a gearbox 223, a differential 213, etc.

[0156] Among them, the generator 217 faces the front of the vehicle body, the exhaust port 2191 faces the left side of the vehicle body, and the motor 222 is arranged directly above the differential 213. This arrangement mode is compact, and the space above the differential 213 is fully utilized to arrange the motor 222. Since the size of the motor 222 is directly proportional to the motor power, the power and torque of the whole vehicle are both greatly improved.

[0157] Figure 12 The layout of a fuel-powered powertrain is shown, and the fuel-powered powertrain includes an engine 211, an exhaust port 2191, a gearbox 231, a differential 213, a CVT transmission system 214, etc.

[0158] Among them, the gearbox 231 faces the left side of the vehicle body, the CVT transmission system 214 faces the right side of the vehicle body, and the exhaust port 2191 faces the rear of the vehicle body to facilitate the layout of the muffler 400. The differential 213 is integrated with the engine 211, with a compact overall structure, high integration, and small occupied space.

[0159] The above different layout schemes of the powertrain 200 are realized on the platformized frame 30, and the left rear suspension 380, right rear suspension 390, rear stabilizer bar 430, and rear towing device 300 do not need to be modified, realizing a flexible layout of the entire vehicle product line.

[0160] For the vehicle body of the all-terrain vehicle according to the embodiment of the present invention, the power compartment 20 of the frame 30 is platformized and modularized. The layout of different powertrains is fully considered, and fuel-powered powertrains with different displacements, hybrid powertrains with various powers, etc. can all be compatible. And predictably, sufficient space is reserved to solve the installation of the powertrain. Moreover, this set of suspension system and the rear stabilizer bar 430 are completely unified, that is, when matching different powertrains, this set of suspension system is exactly the same. Due to the platformization of the frame 30, the later product line expansion and iteration process are accelerated, the R & D efficiency is improved, the costs in various aspects such as R & D, manufacturing, and management are reduced, and the consistency of the product is effectively guaranteed. The failure rates of each component system can be effectively controlled, improving the product quality.

[0161] In addition, the design of the power compartment 20 fully considers the layout of the rear suspension system, with a compact space design. The movement parameters of the suspension are effectively optimized, improving the off-road performance of the vehicle, increasing driving comfort, and enhancing the reliability of the rear suspension system.

[0162] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by 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. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0163] In the description of the present invention, the "first feature" and "second feature" may include one or more of such features. In the description of the present invention, the meaning of "a plurality" is two or more. In the description of the present invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. In the description of the present invention, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature.

[0164] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0165] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A vehicle body of an all-terrain vehicle, characterized in that, Including: A frame, the frame includes a front part, a middle part and a rear part connected in sequence, the rear part is configured with a power cabin for placing a power assembly, the front part includes a lower mounting bracket and an upper support bracket, the lower mounting bracket is connected to the middle part, and the upper support bracket is detachably connected to both the lower mounting bracket and the middle part; A seat bracket, the seat bracket is detachably arranged in the middle part and defines an installation space for a plurality of components with the bottom of the middle part; The lower mounting bracket includes: a rocker arm bracket and a bottom sheet metal; The middle part further includes: a front support bracket, the rocker arm bracket is connected to the front end of the bottom sheet metal and the front end of the front support bracket, an outer tube, an inner longitudinal beam and a bottom plate, the inner longitudinal beam is located inside the outer tube, the bottom plate is connected between the outer tube and the inner longitudinal beam, the bottom plate constitutes the bottom of the installation space, there are two inner longitudinal beams, the two inner longitudinal beams are arranged transversely opposite to each other, and the two inner longitudinal beams define an installation space for the transmission shaft of the all-terrain vehicle; an inner cross beam, the inner cross beam is connected between the inner longitudinal beam and the outer tube, the bottom plate is connected between the outer tube, the inner longitudinal beam and the inner cross beam, a part of the outer tube, the inner cross beam and a part of the inner longitudinal beam form a groove on the bottom plate, and the groove is a part of the installation space; The lower end of the upper support bracket is detachably installed on the bottom sheet metal, and the rear end of the upper support bracket is detachably installed on the front support bracket.

2. The vehicle body of the all-terrain vehicle according to claim 1, characterized in that A support bar is connected between the two inner longitudinal beams.

3. The vehicle body of the all-terrain vehicle according to claim 1, characterized in that, The middle part further includes: an inner inclined beam, the inner inclined beam is connected between the inner longitudinal beam and the outer tube and is located in front of the inner cross beam, and the inner inclined beam extends forward obliquely from the inner longitudinal beam to the outer tube.

4. The vehicle body of the all-terrain vehicle according to claim 1, characterized in that, There are multiple outer tubes, the multiple outer tubes are connected in sequence, the outer tube located at the front side is connected to the front end of the inner longitudinal beam, and the outer tube located at the rear side is connected to the rear end of the inner longitudinal beam.

5. The vehicle body of the all-terrain vehicle according to claim 4, characterized in that, The multiple outer tubes include: a first outer tube, a second outer tube, and a third outer tube, both the first outer tube and the second outer tube are two and are both distributed outside the two inner longitudinal beams, the first outer tube is obliquely connected between the inner longitudinal beam and the second outer tube, and the third outer tube is connected to the rear ends of the two inner longitudinal beams and is respectively connected to the two second outer tubes at both ends.

6. The vehicle body of the all-terrain vehicle according to claim 5, characterized in that, The middle part further includes: a front inclined tube and a front support bracket, the front support bracket is connected to the first outer tube, the front inclined tube extends forward obliquely from bottom to top, the lower end of the front inclined tube is detachably connected to the connection part of the first outer tube and the second outer tube, and the upper end of the front inclined tube is connected to the upper part of the front support bracket.

7. The vehicle body of the all-terrain vehicle according to claim 6, characterized in that, The middle part further includes: a rear inclined tube, the rear inclined tube extends backward obliquely from bottom to top, the lower end of the rear inclined tube is connected to the rear end of the second outer tube, and an upper cross beam is commonly connected to the upper part of the rear inclined tube.

8. The vehicle body of the all-terrain vehicle according to claim 7, characterized in that, The first outer side tube, the second outer side tube, the third outer side tube, the front inclined tube and the rear inclined tube are separate components from each other, and the cross-section of each of them is rectangular.

9. The vehicle body of the all-terrain vehicle according to claim 6, wherein, The middle part further includes a steering wheel bracket and a gearshift bracket. The steering wheel bracket is connected to the front support frame, and the gearshift bracket is welded to the steering wheel bracket as a whole.

10. The vehicle body of the all-terrain vehicle according to claim 7, characterized in that, It further includes: A roll cage, which is installed on the middle part. The roll cage and the middle part jointly define a cockpit.

11. The vehicle body of the all-terrain vehicle according to claim 10, characterized in that, The roll cage includes: Side enclosure bars, which are connected to the rear inclined tube, and the side enclosure bars are connected to the front inclined tube to form a closed loop.

12. The vehicle body of the all-terrain vehicle according to claim 11, characterized in that, The side enclosure bars include: A front upper tube section, which extends at the top and front of the cockpit. The lower end of the front upper tube section is connected to the upper end of the front inclined tube; A rear tube section, which extends at the rear of the cockpit. The upper end of the rear tube section is connected to the rear end of the front upper tube section, and the lower part of the rear tube section is connected to the rear inclined tube; A lower tube section, which extends at the bottom of the cockpit. The front end of the lower tube section is detachably connected to the lower end of the front inclined tube, and the rear end of the lower tube section is detachably connected to the lower end of the rear tube section.

13. The vehicle body of the all-terrain vehicle according to claim 12, characterized in that, The lower tube section includes a horizontal section and an inclined section connected in sequence. The front end of the horizontal section is detachably connected to the lower end of the front inclined tube. The inclined section extends backward and upward from the horizontal section, and the rear end of the inclined section is connected to the lower end of the rear tube section.

14. The vehicle body of the all-terrain vehicle according to claim 13, characterized in that, The roll cage further includes: A plurality of cross bars. There are two side enclosure bars and they are distributed on both sides of the cockpit. A plurality of the cross bars are connected between the two side enclosure bars.

15. The vehicle body of the all-terrain vehicle according to claim 1, characterized in that, The rear part includes two lower side beams, and both of the two lower side beams are connected to the rear of the middle part. The distance between the two lower side beams shows a decreasing trend from front to back.

16. The vehicle body of the all-terrain vehicle according to claim 15, characterized in that, The front ends of the two lower side beams are connected to a third outer side tube, and the third outer side tube is provided with a front mounting part for installing a power assembly.

17. The vehicle body of the all-terrain vehicle according to claim 16, characterized in that, A rear lower longitudinal beam is connected between each lower side beam and the third outer side tube.

18. The vehicle body of the all-terrain vehicle according to claim 15, characterized in that, An intermediate cross beam is also connected between the two lower side beams, and the intermediate cross beam is provided with a rear mounting part for installing a power assembly.

19. The vehicle body of the all-terrain vehicle according to claim 18, characterized in that, The power assembly includes an engine, and there are two rear mounting parts and they are arranged at intervals.

20. The vehicle body of the all-terrain vehicle according to claim 15, characterized in that, A detachable differential bracket is connected between the two lower side beams.

21. The vehicle body of the all-terrain vehicle according to claim 15, characterized in that, A rear floor is connected between the two lower side beams.

22. The vehicle body of the all-terrain vehicle according to claim 21, wherein The rear floor is configured with two longitudinal reinforcing ribs and a plurality of transverse reinforcing ribs. The distance between the two longitudinal reinforcing ribs gradually increases from rear to front. The plurality of transverse reinforcing ribs are arranged at intervals in the front-rear direction. The two ends of each transverse reinforcing rib are respectively connected to the two longitudinal reinforcing ribs. The transverse reinforcing ribs are provided with differential mounting holes, and the longitudinal reinforcing ribs are provided with pits.

23. The vehicle body of the all-terrain vehicle according to claim 15, characterized in that, The rear part further includes two upper side beams, and the two upper side beams are connected to the rear of the middle part. The two upper side beams are located above the two lower side beams. The distance between the two upper side beams shows a decreasing trend from front to back.

24. The vehicle body of the all-terrain vehicle according to claim 23, wherein, A detachable intermediate crossbar is also provided between the two upper side beams. The intermediate crossbar is provided with a top mounting member for mounting a power assembly. The power assembly includes an engine, and the top mounting member is used to fix the cylinder head of the engine.

25. The vehicle body of the all-terrain vehicle according to claim 23, characterized in that, A rear upper crossbeam and a detachable transverse bracket are provided between the two upper side beams. The two ends of the rear upper crossbeam are respectively connected to the rear ends of the two upper side beams. The transverse bracket is located in front of the rear upper crossbeam, and the rear upper crossbeam is provided with a muffler upper mounting plate.

26. The vehicle body of the all-terrain vehicle according to claim 23, characterized in that, A rear swingarm left rear mounting vertical beam is connected between the upper side beam and the lower side beam on one side, and the lower side beam is provided with a rear swingarm left front mounting plate that is located in front of the rear swingarm left rear mounting vertical beam and is disconnected from the upper side beam. A rear swingarm right rear mounting vertical beam is connected between the upper side beam and the lower side beam on the other side, and the lower side beam is provided with a rear swingarm right front mounting plate that is located in front of the rear swingarm right rear mounting vertical beam and is disconnected from the upper side beam.

27. The vehicle body of the all-terrain vehicle according to claim 26, wherein, The lower side beam on one side is provided with a left reinforcing plate connecting the rear swingarm left front mounting plate and the rear swingarm left rear mounting vertical beam. The lower side beam on the other side is provided with a right reinforcing plate connecting the rear swingarm right front mounting plate and the rear swingarm right rear mounting vertical beam.

28. The vehicle body of the all-terrain vehicle according to claim 26, characterized in that, It further includes: A left rear suspension, which includes a left wheel axle support, an upper left swingarm, a lower left swingarm, and a left shock absorber. The upper left swingarm, the lower left swingarm, and the left shock absorber are all connected to the left wheel axle support. The front ends of the upper left swingarm and the lower left swingarm are mounted on the rear swingarm left front mounting plate, the rear ends of the upper left swingarm and the lower left swingarm are mounted on the rear swingarm left rear mounting vertical beam, and the upper end of the left shock absorber is mounted on the corresponding upper side beam. A right rear suspension, which includes a right wheel axle support, an upper right swingarm, a lower right swingarm, and a right shock absorber. The upper right swingarm, the lower right swingarm, and the right shock absorber are all connected to the right wheel axle support. The front ends of the upper right swingarm and the lower right swingarm are mounted on the rear swingarm right front mounting plate, the rear ends of the upper right swingarm and the lower right swingarm are mounted on the rear swingarm right rear mounting vertical beam, and the upper end of the right shock absorber is mounted on the corresponding upper side beam.

29. The vehicle body of the all-terrain vehicle according to claim 28, characterized in that, The lower end of the rear swingarm left rear mounting vertical beam is provided with a rear stabilizer bar left mounting seat, and the lower end of the rear swingarm right rear mounting vertical beam is provided with a rear stabilizer bar right mounting seat. A rear stabilizer bar is connected between the rear stabilizer bar left mounting seat and the rear stabilizer bar right mounting seat, and the two ends of the rear stabilizer bar are respectively connected to the lower left swingarm and the lower right swingarm through connecting rods.

30. The vehicle body of an all-terrain vehicle according to claim 29, characterized in that, The lower end of the rear swingarm left rear mounting vertical beam is provided with a left mounting plate, and the lower end of the rear swingarm right rear mounting vertical beam is provided with a right mounting plate. A towing mounting seat is provided between the left mounting plate and the right mounting plate.

31. The vehicle body of the all-terrain vehicle according to claim 30, characterized in that, The left mounting plate is provided with a left avoidance hole, and the right mounting plate is provided with a right avoidance hole. The rear stabilizer bar passes through the left avoidance hole and the right avoidance hole.

32. The vehicle body of the all-terrain vehicle according to claim 30, characterized in that, A muffler lower mounting plate is further provided between the left mounting plate and the right mounting plate, and the muffler lower mounting plate is located above the towing mounting seat.

33. The vehicle body of the all-terrain vehicle according to claim 26, characterized in that, The distance between the rear swingarm left rear mounting vertical beam and the rear swingarm right rear mounting vertical beam shows a decreasing trend from top to bottom.

34. The vehicle body of the all-terrain vehicle according to claim 23, characterized in that, An upper crossbeam is connected between the front ends of the two upper side beams, and a controller bracket for installing a controller is provided on the upper crossbeam and the upper side beam on the right side.

35. An all-terrain vehicle, characterized in that, It includes the vehicle body of the all-terrain vehicle according to any one of claims 1-34.

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