CN216232775U

CN216232775U - Mini motorcycle of single rocker arm

Info

Publication number: CN216232775U
Application number: CN202122822044.0U
Authority: CN
Inventors: 吴尤利
Original assignee: Foshan Feiyu Power Technology Co ltd
Current assignee: Foshan Feiyu Power Technology Co ltd
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2022-04-08
Anticipated expiration: 2031-11-17

Abstract

The utility model provides a single-rocker mini motorcycle which comprises a main frame, an oil tank, a water tank, an engine, a steering column assembly, a front wheel assembly and a rear wheel assembly. The oil tank, the water tank and the engine are arranged on the main frame, the steering column assembly is connected to the front end of the main frame, the front wheel assembly is arranged at the lower end of the steering column assembly, and the rear wheel assembly is connected to the rear end of the main frame; the water tank is positioned between the steering column assembly and the engine and is communicated with the engine. The oil tank is positioned above the engine and is communicated with the engine; the rear wheel assembly is connected with the engine through a chain. The bottom of the main frame is connected with two front mounting arms and two rear mounting arms; the two front mounting arms and the two rear mounting arms form mounting positions, and the engine is mounted on the mounting positions. The single rocker arm mini motorcycle is light, low in bumping inertia and high in stability, is suitable for installation of various engines, and meets the requirement of a customer on engine replacement. The front wheel assembly adopts left and right double braking, so that the braking performance is better switched, and the braking stability is higher.

Description

Mini motorcycle of single rocker arm

Technical Field

The utility model relates to the technical field of motor vehicles, in particular to a single-rocker mini motorcycle.

Background

The mini motorcycle is designed aiming at a small field, more bent ways, rapid bent ways and flexible and changeable field factors. The motor cycle is limited by the field, the motor cycle with large displacement can not be used as the power, and the motor cycle has the advantages of light weight, easy adjustment of posture, short wheel base, flexible turning, and the like, so that more driving pleasure is provided; meanwhile, the motorcycle is small in size, easy to control and the like, and is the first choice for beginners of motorcycles to enter.

However, the frame of the existing mini motorcycle can only be installed by matching with an engine of one type, and as the driving level of a driver is improved, the engine with larger horsepower needs to be replaced, the frame needs to be redesigned, the flexibility of the frame is not high, and the requirement of a customer for replacing the engine cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model provides a single-rocker mini motorcycle which is flexible, easy to control, sufficient in power, equally friendly to a novice, suitable for installation of various engines and capable of meeting the requirement of a client on later-stage upgrading and replacing of the engines.

The technical scheme adopted by the utility model is as follows: a single rocker mini motorcycle comprising: the steering system comprises a main frame, an oil tank, a water tank, an engine, a steering column assembly, a front wheel assembly and a rear wheel assembly; the oil tank, the water tank and the engine are all arranged on the main frame, the steering column assembly is connected to the front end of the main frame, the front wheel assembly is arranged at the lower end of the steering column assembly, and the rear wheel assembly is connected to the rear end of the main frame; the water tank is positioned between the steering column assembly and the engine and is communicated with the engine; the oil tank is positioned above the engine and communicated with the engine; the rear wheel assembly is connected with the engine through a chain;

the bottom of the main frame is provided with two front mounting arms and two rear mounting arms; the engine mounting structure comprises four front mounting arms and four rear mounting arms, wherein the four front mounting arms and the four rear mounting arms enclose to form mounting positions, the lower end of each front mounting arm is provided with a front mounting column, the lower end of each rear mounting arm is provided with a rear mounting column, and the engine is fixedly mounted in the mounting positions through the two front mounting columns and the two rear mounting columns.

Further, the steering column assembly comprises a left shock absorber and a right shock absorber; the left shock absorber and the right shock absorber are connected with each other through an upper connecting plate and a lower connecting plate; the upper end of the left shock absorber is provided with a left handle, and the lower end of the left shock absorber is provided with a left connecting piece; and a right handle is installed at the upper end of the right shock absorber, and a right connecting piece is arranged at the lower end of the right shock absorber.

Furthermore, a front connecting position is arranged at the front end of the main frame and is positioned in front of the mounting position; the upper connecting plate and the lower connecting plate are arranged at the front connecting position.

Further, the front wheel assembly comprises a front wheel hub, a front tire, a left brake disc, a right brake disc and a front wheel shaft; the middle of the front hub is provided with a front rim, and the left brake disc and the right brake disc are respectively arranged on the left side and the right side of the front rim; the front tire is mounted on the front hub; the front wheel shaft penetrates through the left brake disc, the front wheel hub and the right brake disc, and two ends of the front wheel shaft respectively penetrate through the left brake disc and the right brake disc; the left connecting piece is provided with a left wheel axle mounting hole, and the right connecting piece is provided with a right wheel axle mounting hole; the left end of the front wheel shaft is mounted in the left wheel shaft mounting hole through a front bearing, and the right end of the front wheel shaft is mounted in the right wheel shaft mounting hole through another front bearing.

Furthermore, the left connecting piece is provided with a left connecting hole, the left connecting hole is provided with a left caliper, the right connecting piece is provided with a right connecting hole, and the right connecting hole is provided with a right caliper; the edge of the left brake disc extends at least partially to be located in the clamping groove of the left caliper, and the edge of the right brake disc extends at least partially to be located in the clamping groove of the right caliper.

Furthermore, the engine is connected with a carburetor, the carburetor is provided with a connecting port, and the connecting port is connected with the oil tank through a gasoline pipe; the engine is provided with a water inlet, a water outlet and an exhaust port; the water inlet is connected with an outlet of the water tank, and the water outlet is connected with an inlet of the water tank; the exhaust port is connected with an exhaust pipe assembly, the exhaust pipe assembly extends backwards out of the main frame, and the exhaust pipe assembly is provided with a silencer.

Further, the rear wheel assembly comprises a rear wheel hub, a rear tire, a rear brake disc, a rear wheel shaft, a buffer chain wheel and a rear single rocker arm; a rear rim is arranged in the middle of the rear hub, the rear brake disc is mounted on the rear rim, and the rear tire is mounted on the rear hub; the rear end of the rear single rocker arm is provided with a mounting hole, and an eccentric drum is arranged in the mounting hole; rear bearings are arranged in the eccentric drum and the buffer chain wheel, and one end of the rear wheel shaft penetrates through the rear brake disc and the rear wheel rim and is locked and fixed through a locking nut; the other end of the rear wheel shaft penetrates through the two rear bearings and is locked and fixed through another locking nut; the rear wheel shaft is provided with a connecting plate, the connecting plate is installed on the rear wheel rim, the rear wheel shaft is provided with a fixing plate, the fixing plate is clamped between the connecting plate and the rear single rocker arm, the fixing plate is provided with rear calipers, and at least part of the edge of the rear brake disc extends into a clamping groove of the rear calipers.

Furthermore, a connecting column is arranged at the front end of the rear single rocker arm; the two rear mounting arms are provided with connecting holes, and the connecting column is connected between the two connecting holes; an output chain wheel is arranged on the engine, and the chain is sleeved between the output chain wheel and the buffering chain wheel; one end of the rear single rocker arm close to the connecting column is provided with a rear shock absorption lower mounting position; the rear end of the main frame extends backwards to form a rear tail part, the rear tail part is provided with a rear shock absorption upper mounting position, and a rear shock absorber is connected between the rear shock absorption upper mounting position and the rear shock absorption lower mounting position.

Furthermore, a gear shifting assembly is mounted on the rear mounting arm on the left side, and the gear shifting assembly comprises a left support plate, a gear shifting pedal, a gear shifting connecting rod and a gear shifting driving rod; the left support plate is mounted on the rear mounting arm on the left side, and the gear shifting pedal is connected with the gear shifting connecting rod and the left support plate; the engine is provided with a gear shifting rod, one end of the gear shifting rod is connected with the gear shifting connecting rod, and the other end of the gear shifting rod is connected with the gear shifting rod.

Furthermore, a rear brake assembly is mounted on the rear mounting arm on the right side, and the rear brake assembly comprises a right support plate, a rear brake pedal and a rear brake pump; the right supporting plate is arranged on the rear mounting arm on the right side, the rear brake pump is connected with the right supporting plate through a transition piece, and the rear brake pedal is arranged on the right supporting plate and connected with the rear brake pump; the rear caliper is provided with an oil inlet, the rear brake pump is provided with a first interface used for being connected to a rear brake oil cylinder and a second interface connected with the oil inlet, and the second interface is connected with the oil inlet; and a piston is arranged in the clamping groove of the rear caliper and is communicated with the oil inlet.

Compared with the prior art, the single-rocker mini motorcycle has the advantages that the two front mounting arms and the two rear mounting arms are arranged on the main frame; the two front mounting arms and the two rear mounting arms are enclosed to form a mounting position, the lower end of each front mounting arm is provided with a front mounting column, the lower end of each rear mounting arm is provided with a rear mounting column, and the engine is fixedly mounted on the mounting position through the two front mounting columns and the two rear mounting columns, so that the mounting position can be suitable for mounting engines of various models; compared with the traditional motorcycle, when a customer wants to replace the engine, the requirement of the customer for replacing the engine can be met without redesigning the frame, the applicability is high, and the user experience is effectively improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model without limiting the utility model. In the drawings, there is shown in the drawings,

FIG. 1: the utility model relates to a three-dimensional exploded view of a single rocker arm mini motorcycle;

FIG. 2: the utility model relates to a three-dimensional combined view of a single rocker arm mini motorcycle;

FIG. 3: another perspective combination view of the single rocker arm mini motorcycle of the utility model;

FIG. 4: a perspective view of the main frame of the present invention;

FIG. 5: the utility model relates to a three-dimensional exploded view of a steering column assembly;

FIG. 6: the utility model is a three-dimensional exploded view of the front wheel assembly;

FIG. 7: a perspective view of the engine of the present invention;

FIG. 8: the utility model relates to a perspective view of the connection between an engine and an exhaust pipe component;

FIG. 9: a schematic of a shift assembly of the present invention;

FIG. 10: the utility model is a three-dimensional exploded view of the rear wheel assembly;

FIG. 11: a perspective view of the rear caliper of the present invention;

FIG. 12: a perspective view of the rear brake assembly.

Detailed Description

The following detailed description of embodiments of the utility model refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

As shown in fig. 1 to 3, the mono-rocker mini-motorcycle of the present invention includes a main frame 1, an oil tank 2, a water tank 3, an engine 4, a steering column assembly 5, a front wheel assembly 6, and a rear wheel assembly 7. Wherein, oil tank 2, water tank 3 and engine 4 all install in main frame 1, and direction post subassembly 5 is connected at the front end of main frame 1, and the lower extreme at direction post subassembly 5 is installed to front wheel subassembly 6, and rear wheel subassembly 7 is connected at the rear end of main frame 1. The water tank 3 is positioned between the steering column assembly 5 and the engine 4 and is communicated with the engine 4; the oil tank 2 is positioned above the engine 4 and is communicated with the engine 4; the rear wheel assembly 7 is connected to the engine 4 by a chain 10.

As shown in fig. 1, 3 and 4, specifically, two front mounting arms 101 and two rear mounting arms 102 are connected to the bottom of the main frame 1; the four of the two front mounting arms 101 and the two rear mounting arms 102 enclose a mounting position 103, and the engine 4 is mounted on the mounting position 103. The two front mounting arms 101 and the two rear mounting arms 102 form an auxiliary frame, which is a left arm and a right arm for mounting the engine 4; and the auxiliary frame and the main frame 1 are made of seamless compact steel and are combined through aluminum accessories, so that the whole motorcycle is light, low in bumping inertia and high in stability.

Further, a front mounting column 104 is provided at the lower end of each front mounting arm 101, a rear mounting column 105 is provided at the lower end of each rear mounting arm 102, and the engine 4 is fixedly mounted on the mounting position 103 through the two front mounting columns 104 and the two rear mounting columns 105. In addition, by providing two front mounting posts 104 and two rear mounting posts 105, the mounting position 103 can be adapted to be mounted on various types of engines 4, such as: the displacement of the engine 4 with TYX150CC, TYX250CC and CBS300CC can be selected from 150cc, 250cc or 300 cc. Compared with the traditional motorcycle, when a customer wants to replace the engine 4, the requirement of the customer for replacing the engine 4 can be met without redesigning the frame, the applicability is high, and the user experience is effectively improved.

As shown in fig. 3 to 5, the steering column assembly 5 includes a left shock absorber 501 and a right shock absorber 502; the left shock absorber 501 and the right shock absorber 502 are connected to each other by an upper link plate 503 and a lower link plate 504. The left handle 505 is mounted on the upper end of the left shock absorber 501, and the left connecting piece 506 is arranged on the lower end. The right shock absorber 502 has a right handle 507 mounted at an upper end thereof and a right connecting member 508 mounted at a lower end thereof. Further, the front end of the main frame 1 is provided with a front connecting position 106, and the front connecting position 106 is positioned in front of the mounting position 103; the upper and

lower headers

503 and 504 are mounted to the front coupling portion 106, thereby coupling the steering column assembly 5 and the main frame 1 to each other.

As shown in fig. 3, 5 and 6, the front wheel assembly 6 includes a front hub 601, a front tire 602, a left brake disc 603, a right brake disc 604, and a front axle 605; wherein, the middle of the front hub 601 is provided with a front rim 606, and the left brake disc 603 and the right brake disc 604 are respectively arranged at the left side and the right side of the front rim 606; the front tire 602 is mounted on the front hub 601. The front wheel axle 605 passes through the left brake disc 603, the front wheel hub 601 and the right brake disc 604, and two ends of the front wheel axle 605 respectively pass through the left brake disc 603 and the right brake disc 604. The left connector 506 is provided with a left axle mounting hole 509, and the right connector 508 is provided with a right axle mounting hole 510; the front wheel axle 605 is attached to the left wheel axle mounting hole 509 at the left end thereof via a front bearing 607, and attached to the right wheel axle mounting hole 510 at the right end thereof via another front bearing 607, whereby the front wheel assembly 6 is attached to the lower end of the steering column assembly 5. Further, the left connecting piece 506 is provided with a left connecting hole 511, a left caliper 513 is installed on the left connecting hole 511, the right connecting piece 508 is provided with a right connecting hole 512, and a right caliper 514 is installed on the right connecting hole 512; the edge of the left brake disc 603 extends at least partially into the notch of the left caliper 513 and the edge of the right brake disc 604 extends at least partially into the notch of the right caliper 514. The left and right double brakes are adopted on the front wheel assembly, so that the braking performance of the motorcycle is switched to be more excellent, and the braking stability is higher.

As shown in fig. 3, 7, and 8, a carburetor 401 is connected to the engine 4, the carburetor 401 is provided with a connection port 402, and the connection port 402 is connected to the fuel tank 2 through a gasoline pipe. In addition, the engine 4 is further provided with a water inlet 403, a water outlet 404 and an exhaust port 405; wherein the water inlet 403 is connected with the outlet of the water tank 3, and the water outlet 404 is connected with the inlet of the water tank 3. An exhaust pipe assembly 8 is connected to the exhaust port 405, the exhaust pipe assembly 8 extends rearward out of the main frame 1 and is located above the rear wheel assembly 7, and the exhaust pipe assembly 8 is provided with a muffler.

As shown in fig. 3, 4 and 10, the rear wheel assembly 7 includes a rear hub 701, a rear tire 702, a rear brake disc 703, a rear axle 704, a buffer sprocket 705, and a rear mono rocker 706; a rear rim 707 is provided in the middle of the rear hub 701, a rear brake disc 703 is attached to the rear rim 707, and a rear tire 702 is attached to the rear hub 701. The rear end of the rear single rocker 706 is provided with a mounting hole 708, and an eccentric drum 709 is arranged in the mounting hole 708; a rear bearing 710 is arranged in each of the eccentric drum 709 and the buffer chain wheel 705, and one end of the rear wheel shaft 704 penetrates through the rear brake disc 703 and the rear wheel rim 707 and is locked and fixed through a locking nut 9; the other end of the rear axle 704 passes through the two rear bearings 710 and is fastened by another fastening nut 9. The rear wheel shaft 704 is provided with a connecting plate 711, and the connecting plate 711 is mounted on a rear wheel rim 707. The rear wheel shaft 704 is provided with a fixing plate 712, the fixing plate 712 is clamped between the connecting plate 711 and the rear single rocker arm 706, the fixing plate 712 is provided with a rear caliper 713, and at least part of the edge of the rear brake disc 703 extends into a clamping groove of the rear caliper 713.

Further, the front end of the rear single rocker arm 706 is provided with a connecting column 714; the two rear mounting arms 102 are respectively provided with a connecting hole 107, the connecting column 714 is connected between the two connecting holes 107, then the middle part of the connecting column passes through a rear horizontal fork shaft of the motorcycle, and the two ends of the connecting column are locked by nuts, so that the rear single rocker 706 and the main frame 1 are connected and fixed with each other. An output chain wheel 406 is arranged on the engine 4, and a chain 10 is sleeved between the output chain wheel 406 and a buffering chain wheel 705, so that the rear wheel assembly 7 is connected with the engine 4 through the chain 10. One end of the rear single rocker arm 706 close to the connecting post 714 is also provided with a rear shock absorption lower mounting position 715; a rear tail portion 108 extends rearward from the rear end of the main frame 1, and the exhaust pipe assembly 8 is located between the rear wheel assembly 7 and the rear tail portion 108. In addition, the rear tail portion 108 is provided with a rear shock absorber upper mounting location 109, and a rear shock absorber 11 is connected between the rear shock absorber upper mounting location 109 and the rear shock absorber lower mounting location 715.

As shown in fig. 1, 3, 4 and 9, the shift unit 12 is attached to the left rear mounting arm 102, the shift lever 407 is attached to the engine 4, and the shift unit 12 is mechanically connected to the shift lever 407. The method specifically comprises the following steps: shift assembly 12 includes a left support plate 120, a shift pedal 121, a shift link 122, and a shift rod 123. Left support plate 120 is mounted to left rear mounting arm 102, and shift pedal 121 connects shift link 122 and left support plate 120; shift lever 123 has one end connected to shift link 122 and the other end connected to shift lever 407.

As shown in fig. 1, 11 and 12, the rear mounting arm 102 on the right side has the rear brake assembly 13 mounted thereto, and the rear brake assembly 13 is connected to the rear caliper 713. The method specifically comprises the following steps: the rear brake assembly 13 includes a right support plate 130, a rear brake pedal 131, and a rear brake pump 132; the right support plate 130 is mounted on the right rear mounting arm 102, the rear brake pump 132 is connected to the right support plate 130 through a transition piece 133, and the rear brake pedal 131 is mounted on the right support plate 130 and connected to the rear brake pump 132. Further, the rear caliper 713 is provided with an oil inlet 716, and the rear brake pump 132 is provided with a first port 134 for connecting to the rear brake cylinder and a second port 135 for connecting to the oil inlet 716, wherein the second port 135 is connected with the oil inlet 716 through an oil pipe. A piston 717 is arranged in a clamping groove of the rear caliper 713, and the piston 717 is communicated with an oil inlet 716; brake pump actuating piston 717 is actuated by operation of rear brake pedal 131 to grip rear brake disc 703 for braking.

As shown in fig. 1 to 3, besides, the seat bag 14 is mounted on the rear tail portion 108, the front end of the main frame 1 is provided with an enclosing assembly 15 which encloses the head and the bottom of the motorcycle, so as to protect the engine 4, the water tank 3 and the steering column assembly 5, and improve the aerodynamic performance of the whole motorcycle. The rear single rocker 706 is further provided with a guard plate 16, the guard plate 16 covers the chain 10, the guard plate plays a role in protecting the chain 10, and the danger that the heel of a driver touches the chain can be prevented.

In conclusion, the single-rocker mini motorcycle of the utility model has the following advantages:

1. two front mounting arms 101 and two rear mounting arms 102 are arranged on the main frame 1; the four mounting positions 103 are formed by enclosing two front mounting arms 101 and two rear mounting arms 102, a front mounting column 104 is arranged at the lower end of each front mounting arm 101, a rear mounting column 105 is arranged at the lower end of each rear mounting arm 102, and the engine 4 is fixedly mounted on the mounting positions 103 through the two front mounting columns 104 and the two rear mounting columns 105, so that the mounting positions 103 can be suitable for mounting engines 4 of various models; compared with the traditional motorcycle, when a customer wants to replace the engine 4, the requirement of the customer for replacing the engine 4 can be met without redesigning the frame, the applicability is high, and the user experience is effectively improved.

2. The two front mounting arms 101 and the two rear mounting arms 102 form an auxiliary frame, which is a left arm and a right arm for mounting the engine 4; and the auxiliary frame and the main frame 1 are made of seamless compact steel and are combined through aluminum fittings, so that the single-rocker mini motorcycle is light, high in stability and low in bumping inertia, and can drive on bumpy and turning road sections just like a smooth road section.

3. The design of the whole vehicle adopts a rear single rocker structure, and is popular with vehicle friends.

Any combination of the various embodiments of the present invention should be considered as disclosed in the present invention, unless the inventive concept is contrary to the present invention; within the scope of the technical idea of the utility model, any combination of various simple modifications and different embodiments of the technical solution without departing from the inventive idea of the present invention shall fall within the protection scope of the present invention.

Claims

1. A single rocker mini motorcycle, comprising: the steering system comprises a main frame, an oil tank, a water tank, an engine, a steering column assembly, a front wheel assembly and a rear wheel assembly; the oil tank, the water tank and the engine are all arranged on the main frame, the steering column assembly is connected to the front end of the main frame, the front wheel assembly is arranged at the lower end of the steering column assembly, and the rear wheel assembly is connected to the rear end of the main frame; the water tank is positioned between the steering column assembly and the engine and is communicated with the engine; the oil tank is positioned above the engine and communicated with the engine; the rear wheel assembly is connected with the engine through a chain;

2. The single rocker arm mini motorcycle of claim 1, wherein: the steering column assembly comprises a left shock absorber and a right shock absorber; the left shock absorber and the right shock absorber are connected with each other through an upper connecting plate and a lower connecting plate; the upper end of the left shock absorber is provided with a left handle, and the lower end of the left shock absorber is provided with a left connecting piece; and a right handle is installed at the upper end of the right shock absorber, and a right connecting piece is arranged at the lower end of the right shock absorber.

3. The single rocker arm mini motorcycle of claim 2, wherein: the front end of the main frame is provided with a front connecting position, and the front connecting position is positioned in front of the mounting position; the upper connecting plate and the lower connecting plate are arranged at the front connecting position.

4. The single rocker arm mini motorcycle of claim 2, wherein: the front wheel assembly comprises a front wheel hub, a front tire, a left brake disc, a right brake disc and a front wheel shaft; the middle of the front hub is provided with a front rim, and the left brake disc and the right brake disc are respectively arranged on the left side and the right side of the front rim; the front tire is mounted on the front hub; the front wheel shaft penetrates through the left brake disc, the front wheel hub and the right brake disc, and two ends of the front wheel shaft respectively penetrate through the left brake disc and the right brake disc; the left connecting piece is provided with a left wheel axle mounting hole, and the right connecting piece is provided with a right wheel axle mounting hole; the left end of the front wheel shaft is mounted in the left wheel shaft mounting hole through a front bearing, and the right end of the front wheel shaft is mounted in the right wheel shaft mounting hole through another front bearing.

5. The single rocker arm mini motorcycle of claim 4, wherein: the left connecting piece is provided with a left connecting hole, the left connecting hole is provided with a left caliper, the right connecting piece is provided with a right connecting hole, and the right connecting hole is provided with a right caliper; the edge of the left brake disc extends at least partially to be located in the clamping groove of the left caliper, and the edge of the right brake disc extends at least partially to be located in the clamping groove of the right caliper.

6. The single rocker arm mini motorcycle of claim 1, wherein: the engine is connected with a carburetor, the carburetor is provided with a connecting port, and the connecting port is connected with the oil tank through a gasoline pipe; the engine is provided with a water inlet, a water outlet and an exhaust port; the water inlet is connected with an outlet of the water tank, and the water outlet is connected with an inlet of the water tank; the exhaust port is connected with an exhaust pipe assembly, the exhaust pipe assembly extends backwards out of the main frame, and the exhaust pipe assembly is provided with a silencer.

7. The single rocker arm mini motorcycle of claim 1, wherein: the rear wheel assembly comprises a rear wheel hub, a rear tire, a rear brake disc, a rear wheel shaft, a buffer chain wheel and a rear single rocker arm; a rear rim is arranged in the middle of the rear hub, the rear brake disc is mounted on the rear rim, and the rear tire is mounted on the rear hub; the rear end of the rear single rocker arm is provided with a mounting hole, and an eccentric drum is arranged in the mounting hole; rear bearings are arranged in the eccentric drum and the buffer chain wheel, and one end of the rear wheel shaft penetrates through the rear brake disc and the rear wheel rim and is locked and fixed through a locking nut; the other end of the rear wheel shaft penetrates through the two rear bearings and is locked and fixed through another locking nut; the rear wheel shaft is provided with a connecting plate, the connecting plate is installed on the rear wheel rim, the rear wheel shaft is provided with a fixing plate, the fixing plate is clamped between the connecting plate and the rear single rocker arm, the fixing plate is provided with rear calipers, and at least part of the edge of the rear brake disc extends into a clamping groove of the rear calipers.

8. The single rocker arm mini motorcycle of claim 7, wherein: the front end of the rear single rocker arm is provided with a connecting column; the two rear mounting arms are provided with connecting holes, and the connecting column is connected between the two connecting holes; an output chain wheel is arranged on the engine, and the chain is sleeved between the output chain wheel and the buffering chain wheel; one end of the rear single rocker arm close to the connecting column is provided with a rear shock absorption lower mounting position; the rear end of the main frame extends backwards to form a rear tail part, the rear tail part is provided with a rear shock absorption upper mounting position, and a rear shock absorber is connected between the rear shock absorption upper mounting position and the rear shock absorption lower mounting position.

9. The single rocker arm mini motorcycle of claim 1, wherein: the rear mounting arm on the left side is provided with a gear shifting assembly, and the gear shifting assembly comprises a left support plate, a gear shifting pedal, a gear shifting connecting rod and a gear shifting deflector rod; the left support plate is mounted on the rear mounting arm on the left side, and the gear shifting pedal is connected with the gear shifting connecting rod and the left support plate; the engine is provided with a gear shifting rod, one end of the gear shifting rod is connected with the gear shifting connecting rod, and the other end of the gear shifting rod is connected with the gear shifting rod.

10. The single rocker arm mini motorcycle of claim 7, wherein: the rear mounting arm on the right side is provided with a rear brake assembly, and the rear brake assembly comprises a right support plate, a rear brake pedal and a rear brake pump; the right supporting plate is arranged on the rear mounting arm on the right side, the rear brake pump is connected with the right supporting plate through a transition piece, and the rear brake pedal is arranged on the right supporting plate and connected with the rear brake pump; the rear caliper is provided with an oil inlet, the rear brake pump is provided with a first interface used for being connected to a rear brake oil cylinder and a second interface connected with the oil inlet, and the second interface is connected with the oil inlet; and a piston is arranged in the clamping groove of the rear caliper and is communicated with the oil inlet.