Motorcycle

Abstract

The motorcycle comprises a motorcycle frame, a motorcycle body covering part, a walking assembly, a power assembly and a heat dissipation assembly, at least part of the motorcycle body covering part is arranged on the motorcycle frame, at least part of the walking assembly is located below the motorcycle frame, the power assembly is fixedly connected with the motorcycle frame and is in transmission connection with the walking assembly, and the heat dissipation assembly comprises a radiator. The radiator is at least partially located in front of the power assembly and fixedly connected with the frame. The heat dissipation assembly further comprises an air guide pipe and an air guide cover, at least part of the air guide pipe is located behind the heat dissipation device, the air guide cover is located between the heat dissipation device and the air guide pipe, the air guide cover is fixedly connected with the heat dissipation device and the air guide pipe, and the air guide cover can guide high-temperature gas in the heat dissipation device to the air guide pipe; the motorcycle body covering part comprises lining plates located on the two sides of the power assembly in the width direction of the motorcycle, air guiding openings are formed in the lining plates, and the air guiding pipes are further communicated with the air guiding openings. Through the arrangement, the driving comfort of a driver can be improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a motorcycle. Background Art

[0002] Motorcycles usually use a combination of air cooling and water cooling, that is, water cooling transfers heat to the radiator, and then air cooling dissipates the heat from the radiator. The radiator is usually placed in front of the engine to obtain the maximum air intake. This arrangement causes natural wind to turn into hot air after passing through the radiator, and it is easy to blow toward the driver through the gap between the engine and the outer cover, making the driver feel a higher body temperature, which ultimately leads to poor driving comfort. Utility Model Content

[0003] In order to solve the deficiencies of the prior art, the purpose of the present application is to provide a motorcycle with higher riding comfort.

[0004] To achieve the above objectives, this application adopts the following technical solutions:

[0005] A motorcycle includes a frame, a body covering, a running assembly, a power assembly and a heat dissipation assembly, wherein the body covering is at least partially arranged on the frame, the running assembly is at least partially arranged below the frame, the power assembly is fixedly connected to the frame and is transmission-connected to the running assembly, and the heat dissipation assembly includes a radiator, which is at least partially located in front of the power assembly and fixedly connected to the frame. The heat dissipation assembly also includes an air duct and an air duct cover, wherein the air duct is at least partially located behind the radiator, the air duct cover is located between the radiator and the air duct, the air duct cover is fixedly connected to the radiator and the air duct, and the air duct cover can guide the high-temperature gas in the radiator to the air duct; the body covering includes an inner lining plate located on both sides of the power assembly along the width direction of the motorcycle, the inner lining plate is provided with an air guide port, and the air duct is also connected to the air guide port.

[0006] Furthermore, the radiator includes a cooling fan, which is provided with a cooling port. When observed along the length direction of the motorcycle, the air guide cover basically covers the cooling port. The air guide cover is provided with an air guide opening, which is connected to the cooling port. A reference plane perpendicular to the rotation axis of the cooling fan is defined, and the projection of the air guide opening on the reference plane is the opening projection, and the projection of the cooling port on the reference plane is the cooling projection. The ratio of the area of ​​the opening projection to the area of ​​the cooling projection is greater than 0.2 and less than or equal to 0.8.

[0007] Furthermore, the projection of the air guide cover on the reference plane is basically circular, the projection of the rotation center of the cooling fan on the reference plane is the center of the circle, and the projection of the air guide opening on the reference plane along the direction perpendicular to the reference plane is basically fan-shaped.

[0008] Furthermore, the air guide duct includes an air guide inlet and an air guide outlet, the air guide inlet substantially coincides with the air guide opening and is fixedly connected, and the air guide outlet is fixedly connected to the air guide opening.

[0009] Furthermore, the heat dissipation assembly includes a wind shield, which is at least partially located above the radiator and the power assembly, and is fixedly connected to the power assembly and the radiator.

[0010] Furthermore, the air guide duct extends substantially along the width direction of the motorcycle, and the air guide outlet is located on one side or both sides in the width direction of the motorcycle.

[0011] Furthermore, a first air guide port and a second air guide port are provided on the inner lining plate, the first air guide port is basically located in the middle of the inner lining plate, the second air guide port is basically located in the lower part of the inner lining plate, and the air guide outlet is fixedly connected to the first air guide port and / or the second air guide port.

[0012] Furthermore, the body covering includes an outer covering distributed along the width direction of the motorcycle, and the outer covering is also provided with ventilation holes, which are connected to the first air guide port and / or the second air guide port. The ventilation holes are used to guide the high-temperature gas discharged from the first air guide port and / or the second air guide port to the outside of the outer covering.

[0013] Furthermore, the heat dissipation assembly also includes a radiator grille, and the radiator grille is located in front of the radiator.

[0014] Furthermore, the air guide pipe is made of rubber.

[0015] The hot air blown out of the radiator in the above-mentioned motorcycle can directly enter the air duct and then be discharged through the air duct on the inner lining plate, so that the hot air will not stay inside the motorcycle, thereby reducing the internal temperature of the entire vehicle, and also preventing the hot air from blowing to the driver through the gaps inside the motorcycle during the flow, thereby improving the driving comfort of the driver. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of a motorcycle provided in an embodiment of the present application;

[0017] Figure 2 A side view of a power assembly of a motorcycle provided in an embodiment of the present application arranged on a frame;

[0018] Figure 3 A side view of a frame of a motorcycle provided in an embodiment of the present application;

[0019] Figure 4 A schematic structural diagram of a portion of a frame, a radiator, and a water inlet pipe of a motorcycle provided in an embodiment of the present application;

[0020] Figure 5 A front view of a motorcycle provided in an embodiment of the present application;

[0021] Figure 6 An exploded view of an inner lining plate and a power assembly of a motorcycle provided in an embodiment of the present application;

[0022] Figure 7 A side view of a first lining plate of a motorcycle provided in an embodiment of the present application;

[0023] Figure 8 A side view of a second lining plate of a motorcycle provided in an embodiment of the present application;

[0024] Fig. 9 A schematic diagram of the structure of a radiator and an air duct of a motorcycle provided in an embodiment of the present application;

[0025] Fig.10 A schematic diagram of the structure of a radiator, an air duct and an inner lining plate of a motorcycle provided in an embodiment of the present application;

[0026] Fig.11 A schematic diagram of the coverage of the air guide cover of a motorcycle provided in an embodiment of the present application;

[0027] Fig.12 A schematic diagram of the structure of a frame, a power assembly and a suspension assembly of a motorcycle provided in an embodiment of the present application;

[0028] Fig.13 An exploded view of a frame and suspension assembly of a motorcycle provided in an embodiment of the present application;

[0029] Fig.14 A partial structural schematic diagram of a longitudinal support frame and a connecting cross tube of a motorcycle provided in an embodiment of the present application;

[0030] Fig.15 A side view of a rear fork of a motorcycle provided by an embodiment of the present application;

[0031] Fig.16 An exploded view of a rear fork of a motorcycle provided in an embodiment of the present application;

[0032] Fig.17 A side view of a motorcycle provided in an embodiment of the present application;

[0033] Fig.18 A top view of a rear fork of a motorcycle provided in an embodiment of the present application;

[0034] Fig.19 A side view of a frame, an exhaust pipe and a muffler of a motorcycle provided in an embodiment of the present application;

[0035] Fig. 20 An exploded view of the exhaust pipe and muffler of a motorcycle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the specific implementation manner of the present application will be clearly and completely described below in conjunction with the drawings in the implementation manner of the present application.

[0037] like Figure 1 As shown, a motorcycle 100 includes a frame 11, a body covering 12, a running assembly 13, a power assembly 14 and a suspension assembly 15. The frame 11 constitutes the basic framework of the motorcycle 100, and the frame 11 is mainly used to provide support for other components of the motorcycle 100. The body covering 12 is at least partially connected to the frame 11, and the body covering 12 is used to protect the internal parts of the motorcycle 100. The running assembly 13 is at least partially located below the frame 11 and is connected to the frame 11 through the suspension assembly 15, and the running assembly 13 includes a front wheel 131 and a rear wheel 132. The power assembly 14 is at least partially connected to the frame 11, and the power assembly 14 is transmission-connected to the running assembly 13, and the power assembly 14 is used to generate a driving force to drive the motorcycle 100 to move. In order to clearly illustrate the technical solution of the present application, it is also defined as follows Figure 1 It can be understood that the length direction in the embodiment of the present application refers to the front-to-back direction of the motorcycle 100, the width direction refers to the left-to-right direction of the motorcycle 100, and the height direction refers to the up-down direction of the motorcycle 100.

[0038] like Figure 2 and Figure 3As shown, the frame 11 includes a transverse support frame 111 extending substantially along the length direction of the motorcycle 100 and a longitudinal support frame 112 extending substantially along the height direction of the motorcycle 100, and the transverse support frame 111 and the longitudinal support frame 112 are fixedly connected. Specifically, the power assembly 14 includes an engine 141, the engine 141 is located below the transverse support frame 111, the connection point between the engine 141 and the transverse support frame 111 is defined as a first connection part 1111, the connection point between the engine 141 and the longitudinal support frame 112 is defined as a second connection part 1121 and a third connection part 1122, the first connection part 1111 is at least partially located in front of the second connection part 1121 and the third connection part 1122; along the height direction of the motorcycle 100, the first connection part 1111, the second connection part 1121 and the third connection part 1122 are sequentially distributed from high to low, and the engine 141 is fixedly connected to the frame 11 through the first connection part 1111, the second connection part 1121 and the third connection part 1122. Among them, the engine 141 includes a cylinder head 1411, an upper crankcase 1412 and a lower crankcase 1413. The cylinder head 1411, the upper crankcase 1412 and the lower crankcase 1413 are basically distributed in sequence along the height direction of the motorcycle 100. The cylinder head 1411 is at least partially located above the upper crankcase 1412. The cylinder head 1411 is also at least partially located in front of the upper crankcase 1412. The first connecting part 1111 is located on the cylinder head 1411, the second connecting part 1121 is located on the upper crankcase 1412, and the third connecting part is located on the lower crankcase 1413.

[0039] Furthermore, the engine 141 in the present application is a four-cylinder engine. Since the four-cylinder engine is relatively large in size, the connection between the four-cylinder engine and the frame 11 is relatively cumbersome during the installation process of the four-cylinder engine and the frame 11, resulting in poor assembly efficiency of the engine 141. As an implementation, the frame 11 of the present application further includes an adapter bracket 113, the head pipe 115 adapter bracket 113 is substantially located below the transverse support frame 111, and the adapter bracket 113 is located in front of the longitudinal support frame 112. The adapter bracket 113 basically extends along the height direction of the motorcycle 100, and the upper end of the adapter bracket 113 is detachably connected to the cross support frame 111 through fasteners. The connection point between the engine 141 and the adapter bracket 113 is defined as the fourth connection part 1131, and the fourth connection part 1131 is located at the lower end of the adapter bracket 113. The fourth connection part 1131 is located on the cylinder body of the engine 141. When viewed along the height direction of the motorcycle 100, the fourth connection part 1131 is at least partially located in front of the first connection part 1111. When viewed along the length direction of the motorcycle 100, the fourth connection part 1131 is located between the second connection part 1121 and the third connection part 1122. The engine 141 is detachably connected to the adapter bracket 113 through the fourth connection part 1131. Through the above-mentioned configuration, the detachable design of the adapter bracket 113 and the cross support frame 111 allows the adapter bracket 113 to be disassembled first during the installation of the engine 141 and the frame 11 to obtain a larger installation space, and the adapter bracket 113 is connected to the cross support frame 111 after the engine 141 is fixedly connected to the frame 11 through the first connection portion 1111, the second connection portion 1121 and the third connection portion 1122, and the engine 141 is fixedly connected to the adapter bracket 113 through the fourth connection portion 1131, thereby improving the convenience of disassembly and maintenance of the engine 141 and improving the assembly efficiency of the engine 141. In addition, the configuration of the adapter bracket 113 can also make the frame 11 and the center of gravity of the motorcycle 100 more compatible, improve the torsional rigidity of the head of the motorcycle 100, and make the motorcycle 100 have better maneuverability at high speeds, thereby improving the maneuverability of the motorcycle 100.

[0040] It can be understood that two transverse support frames 111, two longitudinal support frames 112 and two adapter brackets 113 are each provided, and the two transverse support frames 111, two longitudinal support frames 112 and two adapter brackets 113 are distributed along the width direction of the motorcycle 100, the two transverse support frames 111 are each provided with a first connecting portion 1111, the two longitudinal support frames 112 are each provided with a second connecting portion 1121 and a third connecting portion 1122, and the two adapter brackets 113 are each provided with a fourth connecting portion 1131. When viewed along the width direction of the motorcycle 100, the fixing points on the transverse support frames 111, the longitudinal support frames 112 and the adapter brackets 113 on the left and right sides of the motorcycle 100 are substantially coincident, so that the fixing points of the engine 141 are aligned with respect to the longitudinal plane 101 (refer to Figure 2 ) are basically symmetrical, thereby improving the stability of the connection between the engine 141 and the frame 11. In addition, the frame 11 also includes a connecting transverse tube 114 extending along the width direction of the motorcycle 100, and the connecting transverse tube 114 is basically located at the lower end of the longitudinal support frame 112, and the two longitudinal support frames 112 are fixedly connected by the connecting transverse tube 114. The frame 11 also includes a head pipe 115 located in front of the transverse support frame 111, and the rear end of the transverse support frame 111 is fixedly connected to the longitudinal support frame 112, and the front end of the transverse support frame 111 is fixedly connected to the head pipe 115, so that the head pipe 115, the two transverse support frames 111, the two longitudinal support frames 112 and the connecting transverse tube 114 together constitute the main structure of the frame 11, and the head pipe 115, the two transverse support frames 111, the two longitudinal support frames 112 and the connecting transverse tube 114 are surrounded by a storage space for the power component 14 and other components, and the engine 141 is at least partially located in the storage space and is fixedly connected to the longitudinal support frame 112 and the transverse support frame 111.

[0041] like Figure 2 and Figure 3As shown, when observed from the side view, the first connecting part, the second connecting part, the third connecting part and the fourth connecting part all have a center point, defining a longitudinal plane 101 perpendicular to the width direction of the motorcycle 100 and passing through the width center of the motorcycle 100, along the width direction of the motorcycle 100, the projection of the center point of the fourth connecting part 1131 on the longitudinal plane 101 is defined as a fixed point projection, the projection of the rotation axis of the rear wheel 132 on the longitudinal plane 101 along the width direction of the motorcycle 100 is defined as a wheel axis projection point, the line connecting the fixed point projection and the wheel axis projection point is defined as a first line 201, the cylinder head 1411 is located above the first line 201, and when observed along the width direction of the motorcycle 100, the cylinder head 1411 does not overlap with the first line 201. Specifically, along the width direction of the motorcycle 100, the lines of the projections of the center points of the first connection part 1111, the second connection part 1121, the third connection part 1122 and the fourth connection part 1131 on the longitudinal plane 101 enclose a closed figure, and the projection of the engine 141 on the longitudinal plane 101 is defined as the projection of the engine 141. By setting the fourth connection part 1131 on the adapter bracket 113, the present application can make the ratio of the area of ​​the closed figure to the area of ​​the projection of the engine 141 greater than or equal to 0.5 and less than or equal to 1, that is, when observing along the width direction of the motorcycle 100, most of the engine 141 is located in the closed figure enclosed by the four fixed points. Through the above arrangement, the center of gravity of the engine 141 is located inside the closed figure, and the force of the first connection part 1111, the second connection part 1121, the third connection part 1122 and the fourth connection part 1131 can be more uniform, thereby improving the connection stability between the engine 141 and the frame 11.

[0042] In this embodiment, along the width direction of the motorcycle 100, a line connecting the projections of the center points of the first connecting portion 1111 and the fourth connecting portion 1131 on the longitudinal plane 101 is defined as a second connecting line 202, and a line connecting the projections of the center points of the third connecting portion 1122 and the fourth connecting portion 1131 on the longitudinal plane 101 is defined as a third connecting line 203. An angle α is formed between the second connecting line 202 and the third connecting line 203. The angle α is the inner angle of a triangle formed by connecting the first connecting portion 1111, the third connecting portion 1122 and the fourth connecting portion 1131. The angle α can reflect the position of the fourth connecting portion 1131 on the frame 11. Specifically, the angle α between the second connecting line 202 and the third connecting line 203 is greater than or equal to 80° and less than or equal to 113°. Further, the angle α between the second connecting line 202 and the third connecting line 203 is greater than or equal to 87° and less than or equal to 107°. In the embodiment of the present application, the angle α between the second connecting line 202 and the third connecting line 203 is 97°. Through the above arrangement, it is possible to avoid the angle α being too large, which causes the fourth connecting portion 1131 to be positioned too far back, thereby causing interference between the adapter bracket 113 and the engine 141, and it is also possible to avoid the angle α being too small, which causes the fourth connecting portion 1131 to be positioned too far forward, thereby causing an inconvenience on the connection between the adapter bracket 113 and the vehicle frame 11. In addition, when the positions of the first connection part 1111, the second connection part 1121 and the third connection part 1122 remain unchanged, the change in the position of the fourth connection part 1131 also causes the area of ​​the closed figure formed by the connecting lines of the fourth connection part 1131 and the projections of the first connection part 1111, the second connection part 1121 and the third connection part 1122 along the width direction of the motorcycle 100 on the longitudinal plane 101 to change. In the present application, the angle α of 97° can enable the closed figure formed by the connecting lines of the projections of the first connection part 1111, the second connection part 1121, the third connection part 1122 and the fourth connection part 1131 along the width direction of the motorcycle 100 on the longitudinal plane 101 to cover most of the projection of the engine 141 along the width direction of the motorcycle 100, so that the position of the fixed point on the frame 11 can match the center of gravity position of the engine 141, thereby improving the handling flexibility of the entire vehicle.

[0043] In the present application, the transverse support frame 111 and the engine 141 are connected by a connecting member, specifically, the transverse support frame 111 and the engine 141 are connected by bolts, and the bolts extend substantially along the width direction of the motorcycle 100. The description "the projection of the first connecting portion 1111 on the longitudinal plane 101" in the present application refers to the projection of the central axis of the bolts connecting the transverse support frame 111 and the engine 141 on the longitudinal plane 101 along the width direction of the motorcycle 100. Similarly, the longitudinal support frame 112 and the engine 141, as well as the adapter bracket 113 and the engine 141 are also connected by bolts, and the connection method is substantially the same as that of the first connecting portion 1111. Therefore, in the description of the present application, “the projection of the second connection part 1121 on the longitudinal plane 101”, “the projection of the third connection part 1122 on the longitudinal plane 101”, “the projection of the fourth connection part 1131 on the longitudinal plane 101” and the “center point” of the first connection part 1111 to the fourth connection part 1131 all refer to the projection of the center axis of the bolt between the aforementioned components on the longitudinal plane 101 along the width direction of the motorcycle 100.

[0044] Anti-fall ball heads are usually protruding outwards on both sides of the motorcycle 100. The anti-fall ball heads are usually organic elastic energy-absorbing parts or rigid parts with built-in springs. When the motorcycle 100 falls, the anti-fall ball heads first contact the ground to receive the impact, so as to prevent other parts of the motorcycle 100 from being damaged. Figure 3 As shown, in the present embodiment, an anti-fall ball head mounting point 1132 is provided on the adapter bracket 113, and the driver can install the anti-fall ball head on the anti-fall ball head mounting point 1132 according to his own needs, so that the anti-fall ball head can play a role when the motorcycle 100 falls. In addition, when the motorcycle 100 falls seriously and the anti-fall ball head cannot completely absorb the impact, the motorcycle 100 can further absorb the impact through the deformation of the adapter bracket 113 to prevent the impact from being transmitted to the main body of the frame 11 and causing damage to the main body of the frame 11, and the adapter bracket 113 is detachable in design, so that the adapter bracket 113 can be directly replaced after being deformed and damaged, thereby reducing the maintenance cost of the motorcycle 100 and improving the maintenance performance of the motorcycle 100. It can be understood that one end of the two adapter brackets 113 is detachably connected to the cross support frame 111, and the other end is detachably connected to the engine 141. Anti-fall ball head mounting points 1132 are provided on the two adapter brackets 113. The driver can install anti-fall ball heads on the anti-fall ball head mounting points 1132 on both sides according to his own needs, so that when the motorcycle 100 falls to the left or right, the anti-fall ball heads can provide protection for the motorcycle 100.

[0045] like Figure 4As shown, the motorcycle 100 also includes a heat dissipation component 16, which includes a radiator 161 located in front of the engine 141. The radiator 161 is fixedly connected to the adapter bracket 113. The radiator 161 is arranged in front of the engine 141 through the adapter bracket 113. The heat dissipation component 16 also includes a water inlet pipe 162 and a water outlet pipe (not shown). The water inlet pipe 162 is located on the right side of the engine 141 and extends substantially along the length direction of the motorcycle 100. The water outlet pipe is located on the left side of the engine 141 and extends substantially along the length direction of the motorcycle 100. One end of the water inlet pipe 162 is connected to the engine 141, and the other end of the water inlet pipe 162 is connected to the radiator 161. Therefore, when the engine 141 is working, the water flow in the water inlet pipe 162 becomes hot water after completing heat exchange with the engine 141, and then flows into the radiator 161 through the water outlet pipe and exchanges heat with the radiator 161, thereby dissipating the heat generated by the operation of the engine 141, so that the engine 141 is at a suitable working temperature. Specifically, the adapter bracket 113 is provided with a radiator mounting portion 1133, and the radiator 161 is fixedly connected to the adapter bracket 113 via the radiator mounting portion 1133. The adapter bracket 113 located on the right side of the engine 141 is also provided with a water inlet pipe mounting point 1134 for mounting the water inlet pipe 162. The water inlet pipe 162 is connected to the adapter bracket 113 via the water inlet pipe mounting point 1134, so as to avoid the water inlet pipe 162 shaking due to the impact of the water flow inside the water inlet pipe 162 and causing the water inlet pipe 162 to fall off. Furthermore, the water inlet pipe 162 is also connected to the oil cooling pipe of the engine 141. The connection between the water inlet pipe 162 and the adapter bracket 113 can also avoid the water inlet pipe 162 colliding with the oil cooling pipe and causing damage to the oil cooling pipe of the motorcycle 100. In addition, the body cover 12 also includes side guards 124 located on both sides of the engine 141 along the width direction of the motorcycle 100 (refer to Figure 1 ), the side guard plate 124 is fixedly connected to the frame 11, so that the side guard plate 124 can not only provide protection for the internal parts of the motorcycle 100, but also improve the appearance performance of the motorcycle 100. The side guard plate 124 can also play a role in heat insulation, preventing the heat generated by the engine 141 from being transferred to the driver and passengers, further reducing the body temperature of the driver and passengers, and improving the riding comfort of the driver and passengers. The outer side in the above-mentioned refers to the side of the motorcycle 100 away from the longitudinal plane 101. The adapter bracket 113 is also provided with a plastic part mounting point 1135 (refer to Figure 3 ), the side guard plate 124 is at least partially fixedly connected to the adapter bracket 113 through the plastic component mounting point 1135, thereby improving the connection strength of the vehicle body cover 12 and improving the assembly efficiency of the side guard plate 124.

[0046] like Figure 5 and Figure 6As shown, the heat dissipation assembly 16 is mainly used to dissipate heat for the engine 141 to reduce the operating temperature of the engine 141, so that the operating temperature of the engine 141 is within a suitable range, thereby improving the working efficiency of the engine 141. The radiator 161 is located at the front side of the engine 141, and the adapter brackets 113 on the left and right sides are both provided with radiator mounting parts 1133 (refer to Figure 4 ), the radiator 161 is fixedly connected to the adapter bracket 113 through the radiator mounting portion 1133. Specifically, the front end face of the radiator 161 is the windward face. When observed along the length direction of the motorcycle 100, the front end face at least partially overlaps with the front wheel 131 and is at least partially located above the front wheel 131. Therefore, during the driving of the motorcycle 100, natural wind blows toward the radiator 161 through the windward face and exchanges heat with the radiator 161 and is blown out from the rear of the radiator 161. The heat dissipation assembly 16 also includes a windshield 163, which is at least partially located above the radiator 161 and fixedly connected to the radiator 161. The windshield 163 is also at least partially located above the engine 141 and fixedly connected to the engine 141, thereby preventing the hot air blown out of the radiator 161 from blowing out from the upper head pipe 115, resulting in a higher body temperature for the driver, so as to avoid affecting the driver's normal riding. Furthermore, since the engine 141 is located behind the radiator 161, the engine 141 blocks the hot air from blowing backwards, so the hot air is mainly blown out from the left and right sides and bottom of the engine 141.

[0047] like Figure 6 As shown, as an implementation, the vehicle body covering member 12 includes an inner lining plate 121 and an outer covering member 122 (refer to Figure 1), the inner lining plate 121 is distributed on both sides of the engine 141 along the width direction of the motorcycle 100, the inner lining plate 121 is located between the outer cover 122 and the frame 11, the inner lining plate 121 is connected to the frame 11, and when viewed along the width direction of the motorcycle 100, the inner lining plate 121 at least partially overlaps with the engine 141, and the inner lining plate 121 also at least partially overlaps with the radiator 161, so that the inner lining plate 121 can provide protection for the power assembly 14 and the heat dissipation assembly 16. The inner lining plate 121 is provided with a first air guide port 1211 and a second air guide port 1212, which are main circulation paths for hot air. The first air guide port 1211 is basically located in the middle of the inner lining plate 121, and the second air guide port 1212 is basically located in the lower part of the inner lining plate 121. The first air guide port 1211 and the second air guide port 1212 are used to guide the hotter gas around the engine 141 to the outside of the outer cover 122. The movement direction of the gas at the first air guide port 1211 is basically along the width direction of the motorcycle 100, and is blown toward the side away from the longitudinal plane 101; the movement direction of the gas at the second air guide port 1212 is basically along the length direction of the motorcycle 100, and is blown toward the bottom of the first air guide port 1211, so as to avoid the hot air directly blowing onto the driver and affecting the driver's riding. Since there is a gap between the inner lining plate 121 and the engine 141, the hot air blown out from the radiator 161 may pass through the gap and blow to the driver's knees and feet, etc., causing the driver to feel a higher body temperature during riding, which may cause adverse effects on the driver's riding. It can be understood that the "external" in the above-mentioned refers to the external environment of the motorcycle 100.

[0048] In this embodiment, a windshield 1213 is provided on one side of the inner lining plate 121 close to the longitudinal plane 101. The windshield 1213 is provided close to the first air guide port 1211 and the second air guide port 1212. The windshield 1213 is at least partially located above and behind the first air guide port 1211. The windshield 1213 is also at least partially located behind the second air guide port 1212. The windshield 1213 extends inwardly along the width direction of the motorcycle 100 and abuts against the engine 141. , so that the windshield 1213 can block the hot air from blowing out from the gap between the inner lining plate 121 and the engine 141, and the windshield 1213 is arranged close to the first air guide port 1211 and the second air guide port 1212, so that the hot air blocked by the windshield 1213 can be blown out from the first air guide port 1211 and the second air guide port 1212, thereby reducing the time the hot air stays inside the motorcycle 100, improving the heat dissipation efficiency of the motorcycle 100, and reducing the driver's body temperature. It can be understood that the windshield 1213 can be extended and protruded from the inner lining plate 121 through an integrated molding process, and the windshield 1213 can also be an independent component, which is fixedly connected to the inner lining plate 121 and abuts against the engine 141.

[0049] It can be understood that the outer cover 122 is provided with a plurality of vents 1221 (see Figure 1 ), the vents 1221 are also connected to the outside world for hot air to be blown out, wherein, observed along the length direction of the motorcycle 100, the minimum distance of the outer cover 122 in the width direction of the motorcycle 100 is greater than the maximum distance of the inner lining plate 121 in the width direction of the motorcycle 100, so the vents 1221 are distributed on the outside of each air guide port along the width direction of the motorcycle 100, so that during the driving process of the motorcycle 100, the hot air can be discharged from the air guide port to the outside through the vents 1221, and discharged backwards under the action of natural wind, so as to further avoid the hot air discharge path from overlapping with the driver's riding position, thereby avoiding the hot air from blowing to the driver's body and causing a higher body temperature, so as to improve the driver's riding experience. The "outside" mentioned above refers to the side away from the longitudinal plane 101 along the width direction of the motorcycle 100. In addition, a ventilation grille 1222 (refer to Figure 1 ), the ventilation grille 1222 can also prevent foreign objects from entering the interior of the motorcycle 100 and affecting the normal operation of the motorcycle 100 without affecting the blowing of hot air.

[0050] like Figure 7 and Figure 8 As shown, the inner lining plate 121 includes a first lining plate 1214 and a second lining plate 1215 distributed along the width direction of the motorcycle 100. As a specific implementation, in the present application, the first lining plate 1214 is located on the left side of the engine 141, and the second lining plate 1215 is located on the right side of the engine 141. The first lining plate 1214 and the second lining plate 1215 are both provided with a first air guide port 1211 and a second air guide port 1212. Since the engine 141 of the present application is a four-cylinder engine, the cylinder head of the four-cylinder engine is not bilaterally symmetrical. Therefore, in the present application, the gap between the second lining plate 1215 and the engine 141 is small, and the hot air circulation is small. The gap between the first lining plate 1214 and the engine 141 is large, and the hot air circulation is large. Specifically, for the second lining plate 1215, the wind shielding portion 1213 on the inner side of the second lining plate 1215 is a thermal insulation pad 1213a, which is at least partially located behind the first air guide port 1211. The thermal insulation pad 1213a is connected to the second lining plate 1215 by gluing, and the thermal insulation pad 1213a is also in contact with the engine, so that the gap between the second lining plate 1215 and the engine 141 is filled by the thermal insulation pad 1213a to achieve a wind shielding effect, so that the hot air on the right side is blown out through the air guide port on the second lining plate 1215 to prevent the hot air from blowing onto the driver and affecting the driver's riding, thereby reducing the driver's body temperature and improving riding comfort.

[0051] For the first lining plate 1214, the windshield portion 1213 on the inner side of the first lining plate 1214 is a windshield 1213b. The windshield 1213b extends inward from the first lining plate 1214 and abuts against the engine 1213, thereby realizing the blocking effect of the windshield 1213b on the hot air. The windshield 1213b is located above the first air guide port 1211 along the height direction of the motorcycle 100, thereby preventing the hot air from blowing upward to the driver's knees. The windshield 1213b can also be located behind the first air guide port 1211 along the length direction of the motorcycle 100 to prevent the hot air from blowing backward to the driver's legs. The windshield 1214b is also located behind the second air guide port 1212 along the length direction of the motorcycle 100 to prevent the hot air from blowing backward to the driver's feet. Furthermore, the area where the driver's knees are located during riding is defined as the knee placement area 107 (refer to Fig.17 ), the first air guide port 1211 is substantially located in front of the knee placement area 107, and the motorcycle 100 further includes a front pedal 22 (refer to Fig.17), the second air guide port 1212 is basically located in front of the front footrest 22, and the second air guide port 1212 faces the bottom of the motorcycle 100, so that the path of the hot air in the first air guide port 1211 and the second air guide port 1212 does not overlap with the driver's body parts, so as to reduce the driver's body temperature when the hot air is discharged and improve the driver's driving experience. The first air guide port 1211 and the second air guide port 1212 are also provided with a guide portion 1216, and the guide portion 1216 is used to change the flow direction of the hot air in the first air guide port 1211 and / or the second air guide port 1212. In the present application, the guide portion 1216 can make the hot air in the first air guide port 1211 and the second air guide port 1212 be discharged in a direction away from the motorcycle 100 along the width direction of the motorcycle 100. The guide portion 1216 of the first air guide port 1211 is located behind the first air guide port 1211 and is connected to the wind shield 1213, so that the wind shield 1213 blocks the hot air from flowing into the first air guide port 1211 and / or the second air guide port 1212. While the hot air passes through, the wind direction of the hot air in the first air guide outlet 1211 can be changed to prevent the hot air from being blown out from the rear of the first air guide outlet 1211 and the second air guide outlet 1212, so that the hot air is blown out from the first air guide outlet 1211 outward along the width direction of the motorcycle 100 to avoid the driver's knees and legs. A guide portion 1216 is also provided behind the second air guide outlet 1212 to change the wind direction of the hot air in the second air guide outlet 1212, so that the hot air can avoid the driver's feet after being blown out from the second air guide outlet 1212, thereby reducing the perceived temperature of the driver's feet. Through the above arrangement, the windshield 1213 can block the hot air from passing through, and the guide 1216 can change the wind direction of the hot air, so that the hot air in the first air guide 1211 and the second air guide 1212 is blown outward along the width direction of the motorcycle 100 and then blown out to the rear side of the motorcycle 100, thereby preventing the hot air from being blown directly upward to the driver's knees or backward to the driver's feet, thereby affecting the driver's normal driving. In addition, the windshield 163, the inner lining 121 and the engine form an air guide channel of the radiator 161 under the cooperation of the windshield 1213 and the guide 1216, so that the hot air can be guided to be blown out from a specific air guide, thereby effectively reducing the body temperature at the driver's knees and feet, and improving the driver's driving experience.

[0052] In this embodiment, a connecting portion 1214a connecting the first air guide port 1211 and the second air guide port 1212 is further provided on the first lining plate 1214. The connecting portion 1214a is recessed by the first lining plate 1214 toward the side close to the engine 141 to form a groove body. Both ends of the groove body are connected to the first air guide port 1211 and the second air guide port 1212. When the amount of hot air passing through the first air guide port 1211 is large, the hot air can be blown out from the second air guide port 1212 after passing through the connecting portion 1214a from the first air guide port 1211, thereby improving the exhaust efficiency of the air guide port and the heat dissipation efficiency of the heat dissipation component 16, and preventing hot air from accumulating at the first air guide port 1211 and causing the temperature at the first air guide port 1211 to be too high, thereby preventing the motorcycle 100 driver from feeling too high a temperature at his knees and causing harm to the driver or affecting the driver's driving experience.

[0053] like Fig. 9 and Fig.10 A heat dissipation assembly 26 in a second embodiment of the present application is shown, which includes a heat sink that is substantially the same as that in the first embodiment. The parts that are different from those in the first embodiment are described below.

[0054] like Fig. 9 and Fig.10 As shown, in this embodiment, the heat dissipation assembly 26 includes a radiator 261, and the radiator 261 includes a heat dissipation fan 2611. The heat dissipation fan 2611 is provided with a heat dissipation port 2611a. The heat dissipation fan 2611 is provided on the radiator 261 and is used to output the heat accumulated in the radiator 261 to the outside of the radiator 261 through the heat dissipation port 2611a. The heat dissipation assembly 26 also includes an air duct 262 and an air duct cover 263. The air duct 262 is at least partially located behind the radiator 261. The air duct cover 263 is located between the air duct 262 and the radiator 261. The air duct cover 263 is fixedly connected to the air duct 262 and the radiator 261, so that the air duct cover 263 can guide the high-temperature gas in the radiator 261 to the air duct 262. Specifically, the air guide cover 263 is basically disposed on the heat dissipation port 2611 a and is fixedly connected to the heat dissipation port 2611 a . When viewed along the length direction of the motorcycle 100 , the air guide cover 263 basically covers the heat dissipation port 2611 a .

[0055] As a specific implementation, the air guide 262 includes an air guide inlet 2621 and an air guide outlet 2622. The air guide inlet 2621 is fixedly connected to the air guide cover 263, and the air guide outlet 2622 is fixedly connected to the air guide outlet of the first lining plate 1214 or the second lining plate 1215. The air guide cover 263 also includes an air guide opening 2631, which is connected to the heat dissipation port 2611a. The air guide inlet 2621 and the air guide opening 2631 are substantially overlapped and fixedly connected, so that the hot air blown out of the radiator 261 can be directly discharged through the air guide 262, so that the entire heat discharge path is controllable, and the disorder of the hot air discharge is reduced, so that the hot air can be reduced. The accumulation of hot air inside the motorcycle 100 can also be avoided, and the hot air can be prevented from blowing toward the driver through the gap between the engine 141 and the body cover 12, resulting in a higher body temperature for the driver. Through the above-mentioned arrangement, the hot air blown out by the cooling fan 2611 can directly enter the air duct 262, and be discharged through the air duct outlet 2622 and then through the air duct on the inner lining plate 121, so that the hot air will not stay inside the motorcycle 100, thereby reducing the internal temperature of the entire vehicle, and also preventing the hot air from blowing to the driver through the gaps inside the motorcycle 100 during the flow, thereby improving the riding comfort of the driver.

[0056] Furthermore, the air duct 262 extends substantially along the width direction of the motorcycle 100. Since the engine 141 of the present application is a four-cylinder engine, the overall outline size of the four-cylinder engine is relatively large, so that the arrangement space on the left side of the engine 141 is relatively small. Therefore, the air duct 262 of the present application extends rightward along the width direction of the motorcycle 100 and is connected to the inner lining plate 121. It can be understood that for other motorcycles with smaller engine 141, the air duct 262 is connected to the air duct opening 2631 on the first lining plate 1214 or the second lining plate 1215. Both the air duct opening 2631 and the air duct 262 can be provided with two, so that the air duct openings on the first lining plate 1214 and the second lining plate 1215 are connected through the two air ducts 262, so that hot air can be blown out from both sides of the motorcycle 100 to improve the heat dissipation efficiency of the radiator 261. In addition, the air guide inlet 2621 is fixedly connected to the cooling fan 2611 by fasteners, and the air guide outlet 2622 is also provided with fasteners to fix the air guide outlet 2622 and the air guide port, thereby preventing the air guide duct 262 from falling off the cooling fan 2611 due to bumps during the driving of the motorcycle 100, thereby improving the connection stability between the air guide duct 262 and the cooling fan 2611. It is understandable that when the description of "air guide port" appears in this application, the "air guide port" refers to the first air guide port 1211 and / or the second air guide port 1212.

[0057] like Fig.10 and Fig.11As shown, a reference plane 102 perpendicular to the rotation axis of the heat dissipation fan 2611 is defined, the front face and the rear face of the heat sink 261 are parallel to the reference plane 102, the projection of the air guide opening 2631 on the reference plane 102 is the opening projection, the projection of the heat dissipation port 2611a on the reference plane 102 is the heat dissipation projection, and the ratio of the area of ​​the opening projection to the area of ​​the heat dissipation projection is greater than 0.2 and less than or equal to 0.8. In this embodiment, the ratio of the area of ​​the opening projection to the area of ​​the heat dissipation projection is 0.3. As a preferred embodiment, the projection of the air guide cover 263 on the reference plane 102 along the direction perpendicular to the reference plane 102 is basically circular, wherein the projection of the rotation center of the heat dissipation fan 2611 on the reference plane 102 is the center of the circle, and in the foregoing, the rotation center of the heat dissipation fan 2611 refers to the rotation axis of the blades in the heat dissipation fan 2611. Specifically, the projection of the air guide opening 2631 on the reference plane 102 in a direction perpendicular to the reference plane 102 is basically fan-shaped, wherein the central angle of the fan is 120°. Since the arrangement space of the air guide duct 262 is limited by the four-cylinder engine, the present application sets the air guide opening 2631 on the right side of the air guide cover 263, and the part of the air guide cover 262 located on the left and the lower side is a closed structure, so that the position of the air guide opening 2631 is set close to the air guide duct 262 to reduce the length of the air guide duct 262 and facilitate the communication between the air guide opening 2631 and the air guide inlet 2621. Through the above arrangement, when the arrangement of the air guide duct 262 is limited by the outline size of the four-cylinder engine of the present application, the central angle of the projection of the air guide opening 2631 on the reference plane 102 in a direction perpendicular to the reference plane 102 is 120°, which can maximize the air outlet of the air guide opening 2631, thereby improving the heat dissipation efficiency of the radiator 261, which is conducive to reducing the temperature of the motorcycle 100.

[0058] It can be understood that the aforementioned "the central angle of the projection of the air guide opening 2631 on the reference plane 102 along the direction perpendicular to the reference plane 102 is 120°" is only used as a preferred embodiment. The central angle of the projection of the air guide opening 2631 on the reference plane 102 along the direction perpendicular to the reference plane 102 is greater than 0° and less than 360°, that is, the setting angles that can make the air guide duct 262 and the air guide cover 263 connected fall within the protection scope of the present application. For example, when there is sufficient space for arrangement, the central angle of the projection of the air guide opening 2631 on the reference plane 102 along the direction perpendicular to the reference plane 102 can also be 180°, thereby expanding the opening size of the air guide opening 2631, and then increasing the air intake of the air guide inlet 2621, thereby improving the heat dissipation efficiency of the radiator 261. Or if it is inconvenient to arrange the air duct 262 due to other components, the central angle of the projection of the air duct opening 2631 on the reference plane 102 along the direction perpendicular to the reference plane 102 may also be 90° to facilitate the arrangement of the air duct 262 .

[0059] In the present embodiment, the material of the air duct 262 is rubber material, and the rubber material makes the air duct 262 a hose. There is no need to design a special layout space for the air duct 262 during the processing of the frame 11. The shape of the air duct 262 during the processing can be changed along with the shapes of the frame 11 and the engine 141, thereby facilitating the layout of the air duct 262 and improving the assembly performance of the air duct 262.

[0060] like Fig. 9 As shown, further, a radiator grille 2612 is also provided on the front face of the radiator 261. The radiator grille 2612 can guide the natural wind on the windward face of the radiator 261, so that the natural wind can blow to the radiator 261 from the same direction, thereby improving the heat dissipation efficiency of the radiator 261. The radiator grille 2612 can also reduce the reflux of hot air, reduce the inlet and outlet air temperatures of the radiator 261, and is conducive to the optimization of the water temperature of the radiator 261 and the driver's body temperature. In addition, during the driving process of the motorcycle 100, the radiator grille 2612 can also prevent the mud and sand thrown up by the rotation of the front wheel 131 from entering the surface of the radiator 261 and affecting the heat dissipation efficiency of the radiator 261.

[0061] like Fig.12 , Fig.13 and Fig.14As shown, the suspension assembly 15 includes a connecting rod structure 151, a rear fork 152 at least partially located behind the longitudinal support frame 112, and a shock absorber 153. The connecting rod structure 151 is at least partially located behind the engine 141, and the connecting rod structure 151 is at least partially located between the longitudinal support frame 112 and the rear fork 152. The connecting rod structure 151 is also at least partially located below the shock absorber 153 and the rear fork 152. Among them, the rear fork 152 is rotatably connected to the longitudinal support frame 112 and the rear wheel 132, the connecting rod structure 151 is at least partially located between the longitudinal support frame 112 and the rear fork 152 and is rotatably connected to the longitudinal support frame 112 and the rear fork 152, and further, the shock absorber 153 is at least partially located between the connecting rod structure 151 and the longitudinal support frame 112 and is rotatably connected to the connecting rod structure 151 and the longitudinal support frame 112. Specifically, the rear fork 152 is rotatably connected to the longitudinal support frame 112, the connecting rod structure 151 is rotatably connected to the connecting cross tube 114, and the upper end of the shock absorber 153 is rotatably connected to the longitudinal support frame 112. More specifically, the connecting rod structure 151 includes a first connecting rod 1511 and a second connecting rod 1512, the first connecting rod 1511 and the second connecting rod 1512 are rotatably connected, the first connecting rod 1511 is rotatably connected to the connecting cross tube 114 and the second connecting rod 1512, and the second connecting rod 1512 is rotatably connected to the shock absorber 153 and the rear fork 152. Among them, the first connecting rod 1511 includes a front end 1511a and a rear end 1511b distributed along the length direction of the motorcycle 100, the front end 1511a is rotatably connected to the l connecting cross tube 114, the second connecting rod 1512 includes a first end 1512a and a second end 1512b, the rear end 1511b is rotatably connected to the first end 1512a, and the second end 1512b is rotatably connected to the rear fork 152.

[0062] As mentioned above, the connecting cross tube 114 is basically located at the lower part of the longitudinal support frame 112, and the connecting cross tube 114 is basically located between the two longitudinal support frames 112 distributed along the width direction of the motorcycle 100. As an optional embodiment, the rear fork 152 is also basically located between the two longitudinal support frames 112 distributed along the width direction of the motorcycle 100. Since the engine 141 of the present application is a four-cylinder engine, the volume of the engine 141 is relatively large, so that the outline size of the engine 141 along the width direction of the motorcycle 100 is relatively large, and the conventional frame form cannot meet the spatial arrangement requirements of the engine 141 of the present application. Therefore, in the present application, the longitudinal support frame 112 is arranged on the outside of the rear fork 152 to increase the outline size of the frame 11 along the width direction of the motorcycle 100, expand the accommodating space of the frame 11, and thus meet the space requirements for the installation of the engine 141. This arrangement can also improve the rigidity of the frame 11, so that the frame 11 can withstand a larger load, but at the same time, the connecting cross tube 114 also needs to bear a larger impact load. In the present application, in order to improve the structural strength of the connecting cross pipe 114, the connecting cross pipe 114 can also work normally when subjected to a large impact load.

[0063] like Fig.14As shown, in this embodiment, the connecting cross tube 114 is provided with a mounting sheet metal 1141 for connecting the connecting rod structure 151. Along the length direction of the motorcycle 100, the mounting sheet metal 1141 is located at the rear of the connecting cross tube 114. The front end 1511a of the first connecting rod 1511 is rotatably connected to the mounting sheet metal 1141 to achieve the rotatable connection between the first connecting rod 1511 and the connecting cross tube 114. The mounting sheet metal 1141 is provided at the rear of the connecting cross tube 114. The connecting rod structure 151 is located at the rear of the connecting cross tube 114 and is rotatably connected to the mounting sheet metal 1141. In this application, the mounting sheet metal 1141 and the connecting cross tube 114 are fixedly connected by welding to improve the connection strength between the mounting sheet metal 1141 and the connecting cross tube 114. Specifically, two mounting sheet metals 1141 are provided along the width direction of the motorcycle 100, and the front end 1511a of the first connecting rod 1511 is located between the two mounting sheet metals 1141, so that the front end 1511a of the first connecting rod 1511 is rotatably connected to the two mounting sheet metals 1141. A cylindrical mounting tube 1142 is also provided on the mounting sheet metal 1141, and the mounting tube 1142 is fixedly connected to the mounting sheet metal 1141 by welding. In the present application, the mounting tube 1142 can be a bushing. During the welding process of the sheet metal 1141 and the reinforcing tube 119, errors are easily generated due to processing deformation, which results in the error of the mounting sheet metal 1141 not being able to meet the tolerance requirements of the later machining of the mounting hole. Therefore, before the mounting hole is machined on the mounting sheet metal 1141, the mounting tube 1142 is first welded to the mounting sheet metal 1141 to improve the strength of the mounting sheet metal 1141, and then the mounting sheet metal 1141 is machined so that the mounting hole can meet the tolerance requirements, thereby facilitating the rotational connection between the first connecting rod 1511 and the mounting sheet metal 1141. In addition, the mounting tube 1142 can also reduce the wear caused by the rotation of the first connecting rod 1511 and the mounting sheet metal 1141, thereby increasing the service life of the connecting rod structure 114.

[0064] A reinforcing sheet metal 1143 is also provided on the connecting transverse tube 114. The reinforcing sheet metal 1143 is located between the mounting sheet metal 1141 and the connecting transverse tube 114. The reinforcing sheet metal 1143 is fixedly connected to the mounting sheet metal 1141 and the connecting transverse tube 114. In the embodiment of the present application, the reinforcing sheet metal 1143 is connected to the mounting sheet metal 1141 and the connecting transverse tube 114 by welding, so as to improve the strength of the mounting sheet metal 1141 and avoid the fracture between the mounting sheet metal 1141 and the connecting transverse tube 114 when the motorcycle 100 is driving under extreme road conditions, thereby improving the connection stability between the first connecting rod 1511 and the connecting transverse tube 114 and the safety of the motorcycle 100. It can be understood that the aforementioned welding connection method is only a preferred method in the embodiment of the present application. The reinforcing sheet metal 1143 can also be fixedly connected by bolts. The connection method of the reinforcing sheet metal 1143 connected to the mounting sheet metal 1141 and the reinforcing tube 119 by fixed connection all falls within the scope of protection of the present application. Furthermore, the power assembly 14 also includes an exhaust pipe 142 and a muffler 143 (see Fig.17 ), the muffler 143 includes a middle cylinder 1431 (see Fig. 9), the front exhaust pipe 1421 is connected to the power assembly 14 to discharge the exhaust gas generated by the power assembly 14, and the middle cylinder 1431 is connected to the front exhaust pipe 1421 to reduce the noise generated when the exhaust gas is discharged. In this application, the middle cylinder 1431 refers to the silencer package located at the bottom of the motorcycle 100. The middle cylinder 1431 is located below the connecting rod structure 151, and the connecting rod structure 151 can move in the height direction of the motorcycle 100 with the shock absorber 153. When the connecting rod structure 151 moves to the lowest end, there is a gap between the middle cylinder 1431 and the connecting rod structure 151, wherein the minimum gap is 12 mm. Specifically, a muffler mounting point 1143a is further provided on the reinforced sheet metal 1143 located on the left side of the mounting sheet metal 1141 along the width direction of the motorcycle 100, and the middle tube 1431 is fixedly connected to the reinforced sheet metal 1143 through the muffler mounting point 1143a. A muffler connector 1123 is also provided at the lower end of the right longitudinal support frame 112 along the width direction of the motorcycle 100. The muffler connector 1123 is fixedly connected to the longitudinal support frame 112 by welding, and the middle tube 1431 and the muffler connector 1123 are fixedly connected by fasteners, so that the middle tube 1431 is fixedly connected to the frame 11, thereby improving the connection stability of the middle tube 1431 and avoiding damage to the middle tube 1431 due to collision with the connecting rod structure 151 due to vibration during the driving of the motorcycle 100, and avoiding the middle tube 1431 affecting the operation of the connecting rod structure 151 to avoid affecting the shock absorption effect of the motorcycle 100. The middle tube 1431 is connected to the frame 11 through two mounting points located on the left and right sides of the motorcycle 100 along the width direction of the motorcycle 100, so as to prevent the middle tube 1431 from tilting after installation. In addition, an engine mounting portion 1144 is also provided at the front side of the connecting cross tube 114 along the length direction of the motorcycle 100, and the rear end of the power assembly 14 is fixedly connected to the reinforcing tube 119 through the engine mounting portion 1144 to improve the connection stability of the power assembly 14.

[0065] As an optional implementation, the connecting cross tube 114 of the present application is also provided with a reinforcing tube 119, and the reinforcing tube 119 is fixedly connected to the connecting cross tube 114; the reinforcing tube 119 is located between the mounting sheet metal 1141 and the connecting cross tube 114, and the reinforcing tube 119 is also located between the reinforcing sheet metal 1143 and the connecting cross tube 114. The reinforcing tube 119 is basically provided to cover the connecting cross tube 114, and can be used to increase the local cross-sectional diameter of the connecting cross tube 114. In the present application, the reinforcing tube 119 is fixedly connected to the connecting cross tube 114 by welding to improve the connection strength of the connecting cross tube 114, so that the connecting cross tube 114 can withstand a greater impact load. It can be understood that when the connecting cross tube 114 is provided with the reinforcing tube 119, the reinforcing sheet metal 1143 and the mounting sheet metal 1141 are both fixedly connected to the reinforcing tube 119.

[0066] Through the above arrangement, the connecting cross pipe 114, on the basis of integrating the mounting sheet metal 1141 for mounting the connecting rod structure 151, the muffler mounting point 1143a and the engine mounting portion 1144, can also improve the structural strength by reinforcing the wrapping tube 119, thereby reducing the number of mounting points, facilitating the arrangement of various components in the motorcycle 100 and improving the space utilization of the motorcycle 100, and also improving the connection strength of the frame 11, thereby improving the connection stability of various components on the motorcycle 100.

[0067] like Fig.15 and Fig.16 As shown, the front end of the rear fork 152 is rotatably connected to the connecting rod structure 151, and the rear end of the rear fork 152 is rotatably connected to the rear wheel 132. The rear fork 152 is also provided with an inwardly recessed mounting groove 1521, and the aforementioned "inwardly recessed" means that the mounting groove 1521 is recessed toward the side close to the longitudinal plane 101. The rear fork 152 also includes a hollow portion 1522. When viewed along the width direction of the motorcycle 100, the mounting groove 1521 and the hollow portion 1522 at least partially overlap, thereby reducing the weight of the rear fork 152 and improving the lightweight of the motorcycle 100, and also changing the rigidity of the rear fork 152 so that the rigidity of the rear fork 152 matches the rigidity of the frame 11, thereby improving the whole vehicle handling of the motorcycle 100. The projection of the rear fork 152 on the longitudinal plane 101 along the width direction of the motorcycle 100 is defined as a fork projection, and the projection of the hollow portion 1522 on the longitudinal plane 101 along the width direction of the motorcycle 100 is defined as a hollow projection. The ratio of the area of ​​the hollow projection to the area of ​​the fork projection is greater than or equal to 0.11 and less than or equal to 0.15. Specifically, the ratio of the area of ​​the hollow projection to the area of ​​the fork projection is greater than or equal to 0.12 and less than or equal to 0.14. In the embodiment of the present application, the ratio of the area of ​​the hollow projection to the area of ​​the fork projection is 0.13. Through the above arrangement, the hollow portion 1522 can reduce the weight of the rear fork 152 to the greatest extent without affecting the overall strength of the rear fork 152, thereby improving the lightweight degree of the motorcycle 100.

[0068] Further, the rear wheel 132 includes a rear rim 1321 (see Fig.17), when the rear fork 152 and the rear wheel 132 are in the installed state, when viewed from the width direction of the motorcycle 100, the hollow portion 1522 and the rear rim 1321 are substantially overlapped, that is, the rear rim 1321 can be observed through the hollow portion 1522. Further, the body cover 12 also includes a protective cover 123, which is used to cover the hollow portion 1522 and is fixedly connected to the rear fork 152, so as to prevent mud and sand from directly passing through the hollow portion 1522 and adhering to the rear rim 1321, so as to avoid mud and sand accumulation on the rear rim 1321 and affecting the normal driving of the motorcycle 100. The rear fork 152 also includes a connecting sheet metal 1523, and the protective cover 123 is fixedly connected to the rear fork 152 through the connecting sheet metal 1523. Specifically, the connecting sheet metal 1523 includes a fork connecting portion 1523a and a shield connecting portion 1523b. The connecting sheet metal 1523 is fixedly connected to the rear fork 152 through the fork connecting portion 1523a. The shield 123 is fixedly connected to the connecting sheet metal 1523 through the shield connecting portion 1523b. The fork connecting portion 1523a and the shield connecting portion 1523b are distributed along the height direction of the motorcycle 100. Specifically, the fork connecting portion 1523a is located below the shield connecting portion 1523b. A mounting hole 1524 is provided on the inner side of the rear fork 152. The fastener passes through the fork connecting portion 1523a and is fixedly connected to the mounting hole 1524, so that the connecting sheet metal 1523 is fixedly connected to the rear fork 152. The "inner side" in the above-mentioned refers to the side of the rear fork 152 close to the longitudinal plane 101. Through the above-mentioned arrangement, the mounting hole 1524 is arranged on the inner side of the rear flat fork 152, and the protective cover 123 can be fixedly connected to the rear flat fork 152 by connecting the sheet metal 1523, thereby reducing the number of mounting points to facilitate the processing of the rear flat fork 152, and simplifying the installation process between the protective cover 123 and the rear flat fork 152, thereby improving the installation efficiency of the protective cover 123, and further improving the assembly performance of the protective cover 123 and the rear flat fork 152.

[0069] Since the protective cover 123 is fixedly connected to the connecting sheet metal 1523 only through the protective cover connecting portion 1523b, the front end of the protective cover 123 is prone to warping due to uneven force. In this embodiment, the front end of the connecting sheet metal 1523 extends forward along the length direction of the motorcycle 100, and a clamping groove 1231 is provided on the inner side of the protective cover 123. The front end of the connecting sheet metal 1523 is sleeved with a clamping member 1523c, and the clamping member 1523c is clamped with the clamping groove 1231, so that the front end of the connecting sheet metal 1523 is clamped with the clamping groove 1231 of the protective cover 123. When the protective cover 123 is installed in the installation groove 1521, and the clamping groove 1231 is clamped with the connecting sheet metal 1523, the protective cover 123 is basically located inside the installation groove 1521 when viewed from the height direction of the motorcycle 100. The "inside" mentioned above means that the maximum distance between the protective cover 123 and the longitudinal plane 101 is less than the maximum distance between the mounting groove 1521 and the longitudinal plane 101, that is, the protective cover 123 cannot be directly observed along the height direction of the motorcycle 100. Through the above arrangement, the clamping of the clamping member 1523c and the clamping groove 1231 enables the front end of the connecting sheet metal 1523 to rely on its own strength to prevent the protective cover 123 from warping, so that the side surface of the protective cover 123 and the side surface of the rear fork 152 can form a smooth plane, thereby reducing the wind resistance of the motorcycle 100 and avoiding dust accumulation at the connection between the protective cover 123 and the rear fork 152, thereby improving the appearance performance of the motorcycle.

[0070] A through hole 1522d is also provided on the connecting sheet metal 1523, and an elastic member 1523d is penetrated through the through hole 1522d. One end of the elastic member 1523d abuts against the mounting groove 1521, and the other end of the elastic member 1523d abuts against the inner side of the protective cover 123. After the protective cover 123 is connected to the rear fork 152, direct contact between the protective cover 123 and the rear fork 152 is avoided. Therefore, during the driving process of the motorcycle 100, the elastic member 1523d can avoid collision between the protective cover 123 and the rear fork 152 due to relative vibration, thereby improving the connection stability between the protective cover 123 and the rear fork 152. In addition, the elastic member 1523d can also reduce the wear of the protective cover 123 caused by collision. In the present application, the protective cover 123 is made of plastic material, which can protect the hollow portion 1522 and reduce the weight of the protective cover 123, further improving the lightweight of the motorcycle 100. The clamping member 1523c and the elastic member 1523d are both made of rubber material. It is understandable that the material of the protective cover 123 can also be other materials that can play a protective role.

[0071] like Fig.17 , Fig.18 and Fig.19As shown, the muffler 143 also includes a tail cylinder 1432 located at the rear of the motorcycle 100. Along the length direction of the motorcycle 100, the tail cylinder 1432 is located behind the middle cylinder 1431. When the motorcycle 100 passes through a wading road, the tail cylinder 1432 can prevent water from entering the exhaust pipe 142 and blocking the exhaust, so as to avoid the power assembly 14 from stalling due to exhaust blockage. In the present application, the exhaust pipe 142 also includes a rear exhaust pipe 1422, which is located between the tail cylinder 1431 and the middle cylinder 1432. The middle cylinder 1431 and the tail cylinder 1432 are connected by the rear exhaust pipe 1422, so that the power assembly 14 forms an exhaust passage from the front exhaust pipe 1421 to the middle cylinder 1431 and then to the rear exhaust pipe 1422, and finally discharges the exhaust gas from the tail cylinder 1432. The motorcycle 100 further includes a saddle assembly 17, which includes a main seat cushion 171 for the driver to sit on, and an auxiliary seat cushion 172 located behind the main seat cushion 171. The main seat cushion 171 and the rear seat cushion 172 are at least partially fixedly connected to the frame 11, and the auxiliary seat cushion 172 is used for rear passengers to sit on. When viewed along the width direction of the motorcycle 100, the tail cylinder 1432 is located between the rear wheel 132 and the auxiliary seat cushion 172, and the tail cylinder 1432 is located above the rear wheel 132. The tail cylinder 1432 includes an exhaust port 1432 located at the rear end. a, define a horizontal plane 103 perpendicular to the height direction of the motorcycle 100, the lowest end of the walking assembly 13 is located on the horizontal plane 103, the minimum distance H1 between the exhaust port 1432a and the horizontal plane 103 is greater than or equal to 65cm and less than or equal to 87cm, further, the minimum distance H1 between the exhaust port 1432a and the horizontal plane 103 is greater than or equal to 69cm and less than or equal to 80cm, and in the embodiment of the present application, the minimum distance H1 between the exhaust port 1432a and the horizontal plane 103 is 72.5cm. Through the above settings, the setting position of the tail cylinder 1432 can increase the wading height of the motorcycle 100, making the motorcycle 100 more passable, and can also prevent muddy water from entering the exhaust pipe 142 through the exhaust port during the driving of the motorcycle 100, causing the engine 141 to stall, thereby improving the working stability of the motorcycle 100.

[0072] Further, a preset straight line 106 is defined, and the tail cylinder 1432 is basically extended along the preset straight line 106. As an optional implementation method, an angle is formed between the preset straight line 106 and the horizontal plane 103. The angle is an acute angle formed between the preset straight line 106 and the horizontal plane 103, and the angle β is greater than or equal to 26° and less than or equal to 40°. Further, the angle β between the axis of the tail cylinder 1432 and the horizontal plane 103 is greater than or equal to 30° and less than or equal to 36°. In the implementation method of the present application, the angle between the axis of the tail cylinder 1432 and the horizontal plane 103 is 33°. Through the above arrangement, when the height of the tail cylinder 1432 remains unchanged, the size of the angle β will affect the size of the distance between the exhaust port 1432a and the horizontal plane 103, thereby affecting the wading height of the motorcycle 100. If the angle β is set too small, the wading height will be reduced. If the angle β is set too large, the tail cylinder 1432 will be too close to the auxiliary seat cushion 172, resulting in a higher body temperature felt by the passengers. The angle β of the present application can further increase the distance between the exhaust port 1432a and the horizontal plane 103 to increase the wading height of the motorcycle 100 when the body temperature felt by the passengers does not exceed the appropriate range, thereby improving the passability and wading performance of the motorcycle 100.

[0073] like Fig.17 and Fig.18As shown, when viewed from the height direction of the motorcycle 100, the rear fork 152 and the tail cylinder 1432 at least partially overlap, that is, the muffler 143 is arranged close to the inner side of the rear fork 152. Since the rear fork 152 and the tail cylinder 1432 are substantially overlapped, the rear exhaust pipe 1422 connected to the tail cylinder 1432 interferes with the rear fork 152 in the width direction. Optionally, the rear fork 152 further includes a connecting portion 1525, which is located at the front of the rear fork 152. The rear fork 152 is rotatably connected to the longitudinal support frame 112 through the connecting portion 1525. In the present application, an avoidance groove 1525a is provided on the connecting portion 1525, so that the rear exhaust pipe 1422 can extend upward from the bottom of the motorcycle 100 through the avoidance groove 1525a to the bottom of the main seat cushion 171, and then extend backward to connect with the tail cylinder 1432. Specifically, the avoidance groove 1525a is located on the right side of the connecting portion 1525, and the avoidance groove 1525a is recessed toward the side close to the longitudinal plane 101. The minimum distance between the avoidance groove 1525a and the longitudinal plane 101 is H2. The minimum distance between the connecting portion 1525 located on the left side of the motorcycle 100 and the longitudinal plane 101 is H3. The ratio of H2 to H3 is greater than or equal to 1.3 and less than or equal to 1.9. Furthermore, the ratio of H2 to H3 is greater than or equal to 1.5 and less than or equal to 1.8. In this embodiment, the ratio of H2 to H3 is 1.6. Through the above arrangement, it is possible to avoid the avoidance groove 1525a being too large due to the ratio being too large and affecting the structural strength of the rear fork 152, and it is also possible to avoid the avoidance groove 1525a being too small due to the ratio being too small and affecting the passage of the rear exhaust pipe 1422. Thus, the tail cylinder 1432 and the rear exhaust pipe 1422 are arranged on the inner side close to the motorcycle 100 through the avoidance groove 1525a, so that when the motorcycle 100 falls, the tail cylinder 1432 and the rear exhaust pipe 1422 will not collide with the ground and cause damage to the tail cylinder 1432 and the rear exhaust pipe 1422. In addition, the tail cylinder 1432 and the rear exhaust pipe 1422 are arranged on the inner side close to the motorcycle 100, which can also reduce the width of the motorcycle 100, thereby improving the passability of the motorcycle 100. The inner side in the above-mentioned refers to the side of the motorcycle 100 close to the longitudinal plane 101. It can be understood that the description “inside of the motorcycle 100 ” in the present application refers to a side close to the longitudinal plane 101 on the motorcycle 100 .

[0074] like Fig. 20As shown, in this embodiment, the tail cylinder 1432 includes a first tail cylinder 1432c and a second tail cylinder 1432d distributed along the width direction of the motorcycle 100. When the rear exhaust pipe 1422 extends to the bottom of the main seat cushion 171 through the avoidance groove 1525a, the rear exhaust pipe 1422 is divided into a first exhaust pipe 1422a and a second exhaust pipe 1422b. The first exhaust pipe 1422a extends backward and is connected to the first tail cylinder 1432c, and the second exhaust pipe 1422b extends to the left side of the motorcycle 100 along the width direction of the motorcycle 100, and then extends backward and is connected to the second tail cylinder 1432d. Through the above arrangement, the first tail cylinder 1432c and the second tail cylinder 1432d are symmetrical about the longitudinal plane 101, so that the load of the motorcycle 100 in the width direction is basically consistent, so that the center of gravity of the motorcycle 100 is basically located in the middle of the motorcycle 100, thereby improving the maneuverability of the motorcycle 100. In addition, the dual exhaust combination of the first exhaust pipe 1422a and the second exhaust pipe 1422b can also improve the exhaust efficiency of the motorcycle 100, thereby improving the performance of the power assembly 14. The "middle part of the motorcycle 100" mentioned above refers to the point on the longitudinal plane 101 where the distance from the front wheel rotation axis is equal to the distance from the point to the rear wheel rotation axis. In this case, the position of the point refers to the middle part of the motorcycle 100.

[0075] A heat shield 1422c is provided on the side of the first exhaust pipe 1422a and the second exhaust pipe 1422b away from the longitudinal plane 101 along the width direction of the motorcycle 100. The heat shield 1422c is basically arc-shaped, and the heat shield 1422c is basically arranged to semi-enclose the first exhaust pipe 1422a and the second exhaust pipe 1422b. The side away from the longitudinal plane 101 along the width direction of the motorcycle 100 is the side in contact with the driver and the passengers. The arrangement of the heat shield 1422c can reduce the perceived temperature of the driver and the passengers, and prevent the high temperature generated during the exhaust process of the exhaust pipe 142 from causing harm to the driver and the passengers. Furthermore, the frame 11 also includes a rear pedal bracket 118, one end of the rear pedal bracket 118 is fixedly connected to the frame 11, a muffler mounting bracket 1432b is provided on the tail cylinder 1432, and the other end of the rear pedal bracket 118 is fixedly connected to the muffler mounting bracket 1432b by a fastener, thereby realizing a fixed connection between the tail cylinder 1432 and the frame 11, preventing the exhaust pipe 142 and the tail cylinder 1432 from loosening or falling off due to the vibration of the motorcycle 100 during the driving of the motorcycle 100, avoiding safety hazards of the motorcycle 100, and improving the driving safety of the motorcycle 100.

[0076] In addition, the motorcycle also includes a rear turn signal 18. Since the tail pipe 1432 is close to the rear turn signal 18, when the motorcycle 100 is started, the heat brought by the exhaust gas of the tail pipe 1432 can easily cause the temperature inside the cavity of the rear turn signal 18 to be too high. In order to ensure that the rear turn signal 18 can work normally, it is necessary to set a high-temperature resistant lamp bead in the rear turn signal 18, which leads to a higher cost of the motorcycle 100. In the present application, a thermistor is set on the circuit board in the rear turn signal 18, so that the output power of the rear turn signal 18 is reduced when the temperature is high, and the heat generated by the rear turn signal 18 itself is reduced, so that the operating temperature of the rear turn signal 18 is within a suitable range.

[0077] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to this application.

Claims

1. A motorcycle, comprising: Frame; a body covering, the body covering being at least partially disposed on the vehicle frame; A traveling assembly, wherein the traveling assembly is at least partially located below the frame; A power assembly, the power assembly is fixedly connected to the frame and is transmission-connected to the travel assembly; A heat dissipation assembly, the heat dissipation assembly comprising a radiator, the radiator being at least partially located in front of the power assembly and fixedly connected to the frame; It is characterized in that The heat dissipation assembly also includes an air duct and an air duct cover, wherein the air duct is at least partially located behind the radiator, the air duct cover is located between the radiator and the air duct, the air duct cover is fixedly connected to the radiator and the air duct, and the air duct cover can guide the high-temperature gas in the radiator to the air duct; the body cover includes an inner lining plate located on both sides of the power assembly along the width direction of the motorcycle, the inner lining plate is provided with an air guide port, and the air duct is also connected to the air guide port.

2. The motorcycle according to claim 1, characterized in that: The radiator includes a cooling fan, a cooling port is arranged on the cooling fan, the wind guide cover basically covers the cooling port when observed along the length direction of the motorcycle, the wind guide cover is provided with an air guide opening, the air guide opening is connected with the cooling port, and a reference plane perpendicular to the rotation axis of the cooling fan is defined, the projection of the air guide opening on the reference plane is the opening projection, the projection of the cooling port on the reference plane is the cooling projection, and the ratio of the area of ​​the opening projection to the area of ​​the cooling projection is greater than 0.2 and less than or equal to 0.

8.

3. The motorcycle according to claim 2, characterized in that: The projection of the air guide cover on the reference plane is basically circular, the projection of the rotation center of the cooling fan on the reference plane is the center of the circle, and the projection of the air guide opening on the reference plane along a direction perpendicular to the reference plane is basically fan-shaped.

4. The motorcycle according to claim 3, characterized in that: The air guide duct comprises an air guide inlet and an air guide outlet, the air guide inlet substantially coincides with and is fixedly connected to the air guide opening, and the air guide outlet is fixedly connected to the air guide opening.

5. The motorcycle according to claim 4, characterized in that: The heat dissipation assembly comprises a wind shield, which is at least partially located above the radiator and the power assembly, and is fixedly connected to the power assembly and the radiator.

6. The motorcycle according to claim 4, characterized in that: The air guide duct basically extends along the width direction of the motorcycle, and the air guide outlet is located on one side or both sides in the width direction of the motorcycle.

7. The motorcycle according to claim 4, characterized in that: The inner lining plate is provided with a first air guide port and a second air guide port, wherein the first air guide port is basically located in the middle of the inner lining plate, and the second air guide port is basically located in the lower part of the inner lining plate, and the air guide outlet is fixedly connected to the first air guide port and / or the second air guide port.

8. The motorcycle according to claim 7, characterized in that: The body covering includes an outer covering distributed along the width direction of the motorcycle, and the outer covering is also provided with ventilation holes, which are connected to the first air guide port and / or the second air guide port, and are used to guide the high-temperature gas discharged from the first air guide port and / or the second air guide port to the outside of the outer covering.

9. The motorcycle according to claim 1, characterized in that: The heat dissipation assembly further comprises a radiator grille, and the radiator grille is located in front of the radiator.

10. The motorcycle according to claim 1, characterized in that: The material of the air guide pipe is rubber.

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