Motorcycle

Abstract

The motorcycle comprises a frame, a walking assembly, a power assembly and a saddle assembly, the walking assembly comprises a rear wheel at least partially located below the frame, the power assembly is fixedly connected with the frame and is in transmission connection with the rear wheel, and the power assembly comprises an engine, an exhaust pipe and a silencer. The saddle assembly is at least partially disposed on the frame. The silencer comprises a tail cylinder and a middle cylinder, the tail cylinder is located behind the middle cylinder in the length direction of the motorcycle, and the exhaust pipe is used for communicating the tail cylinder, the middle cylinder and the engine; the saddle assembly comprises an auxiliary cushion located on the rear portion of the frame, the tail cylinder is located below the auxiliary cushion, and the tail cylinder is located between the rear wheel and the auxiliary cushion when observed in the width direction of the motorcycle. A preset straight line is defined, the tail cylinder basically extends along the preset straight line, an included angle is formed between the preset straight line and the horizontal plane, and the included angle is larger than or equal to 26 degrees and smaller than or equal to 40 degrees.

Description

Technical Field

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

[0002] A motorcycle discharges exhaust gas generated by the engine through the exhaust pipe. Therefore, the layout of the exhaust port on the exhaust pipe directly affects the wading height of the motorcycle. If the exhaust port is located too low, water can easily enter the exhaust pipe when the motorcycle passes through a wading section and eventually cause damage to the engine. The exhaust port position of the exhaust pipe in the existing technology is usually low, resulting in poor wading performance of the motorcycle. Summary of the Invention

[0003] In order to address the deficiencies of the prior art, the purpose of this application is to provide a motorcycle with better wading performance.

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

[0005] A motorcycle comprises a frame, a running assembly, a power assembly, and a saddle assembly. The running assembly comprises a rear wheel at least partially located below the frame. The power assembly is fixedly connected to the frame and in transmission connection with the rear wheel. The power assembly comprises an engine, an exhaust pipe, and a muffler. The saddle assembly is at least partially disposed on the frame. The muffler comprises a tailpipe and a middle pipe. The tailpipe is located behind the middle pipe along the length of the motorcycle. The exhaust pipe is used to connect the tailpipe, the middle pipe, and the engine. The saddle assembly comprises a secondary seat located at the rear of the frame. The tailpipe is located below the secondary seat. When viewed along the width of the motorcycle, the tailpipe is located between the rear wheel and the secondary seat. A preset straight line is defined. The tailpipe extends substantially along the preset straight line. The preset straight line forms an angle with the horizontal plane, the angle being greater than or equal to 26° and less than or equal to 40°.

[0006] Furthermore, the middle barrel is at least partially located below the engine; the exhaust pipe includes a front exhaust pipe and a rear exhaust pipe, the front exhaust pipe is at least partially located in front of the engine, the front exhaust pipe is used to connect the engine and the middle barrel, and the rear exhaust pipe is located between the tail barrel and the middle barrel, and the tail barrel is connected to the middle barrel through the rear exhaust pipe.

[0007] Furthermore, the tail pipe includes an exhaust port, which is located at the rear end of the tail pipe, and the minimum distance between the exhaust port and the horizontal plane is greater than or equal to 65 cm and less than or equal to 87 cm.

[0008] Furthermore, the motorcycle further comprises a rear flat fork connected to the rear wheel, and when viewed along the height direction of the motorcycle, the rear flat fork at least partially overlaps with the tail cylinder.

[0009] Furthermore, the frame includes a longitudinal support frame extending in the height direction of the motorcycle, the rear fork includes a connecting portion, the rear fork is rotatably connected to the longitudinal support frame through the connecting portion, and an avoidance groove is provided on the connecting portion. The saddle assembly also includes a main seat cushion located at the rear of the frame, and the rear exhaust pipe at least partially passes through the avoidance groove and extends upward to the bottom of the main seat cushion, and extends rearward to be connected to the tail cylinder.

[0010] Furthermore, the avoidance groove is located on the right side of the connecting portion, defining a longitudinal plane perpendicular to the width direction of the motorcycle and passing through the center of the width of the motorcycle. The avoidance groove is recessed toward the side close to the longitudinal plane, and the ratio of the minimum distance between the avoidance groove and the longitudinal plane to the minimum distance between the connecting portion located on the left side of the motorcycle and the longitudinal plane is greater than or equal to 1.3 and less than or equal to 1.9.

[0011] Furthermore, the tail cylinder includes a first tail cylinder and a second tail cylinder distributed along the width direction of the motorcycle, defining a longitudinal plane perpendicular to the width direction of the motorcycle and passing through the width center of the motorcycle, and the first tail cylinder and the second tail cylinder are substantially symmetrical about the longitudinal plane.

[0012] Furthermore, the rear exhaust pipe is divided into a first exhaust pipe and a second exhaust pipe, the first exhaust pipe is connected to the first tail pipe, and both ends of the second exhaust pipe are connected to the first exhaust pipe and the second tail pipe.

[0013] Furthermore, a heat shield is provided on one side of the first exhaust pipe and the second exhaust pipe away from the longitudinal plane in the width direction of the motorcycle. The heat shield is arc-shaped and substantially half surrounds the first exhaust pipe and the second exhaust pipe.

[0014] Furthermore, the vehicle frame also includes a rear pedal bracket, which is fixedly connected to the vehicle frame; a muffler mounting bracket is provided on the tail pipe, and the rear pedal bracket is also fixedly connected to the muffler mounting bracket.

[0015] The motorcycle has an exhaust pipe arranged at an angle, thereby raising the height of the exhaust port. This prevents water from entering the exhaust pipe when the motorcycle passes through a flooded section, thereby improving the water-wading performance of the motorcycle and improving the passability of the motorcycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A perspective view of a motorcycle provided in an embodiment of the present application;

[0017] Figure 2 A side view of a motorcycle provided in an embodiment of the present application, wherein a power assembly is 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 4A schematic structural diagram of a portion of the frame, radiator, and 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 the inner lining plate and 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] Figure 9 A schematic structural diagram of a radiator and an air duct of a motorcycle provided in an embodiment of the present application;

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

[0026] Figure 11 A schematic diagram of the coverage of the air scoop of a motorcycle provided in an embodiment of the present application;

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

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

[0029] Figure 14 A schematic diagram of a portion of the structure of the longitudinal support frame and connecting cross tube of a motorcycle provided in an embodiment of the present application;

[0030] Figure 15 A side view of a rear fork of a motorcycle provided in an embodiment of the present application;

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

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

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

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

[0035] Figure 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 people in this field to better understand the solution of the present application, the technical solution in the specific implementation of the present application will be clearly and completely described below in conjunction with the drawings in the implementation 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. 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. 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, the following are also defined. Figure 1 It is 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 generally along the length of the motorcycle 100 and a longitudinal support frame 112 extending generally along the height of the motorcycle 100. The transverse support frame 111 and the longitudinal support frame 112 are fixedly connected. Specifically, the power assembly 14 includes an engine 141, which 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 portion 1111, and the connection points between the engine 141 and the longitudinal support frame 112 are defined as a second connection portion 1121 and a third connection portion 1122. The first connection portion 1111 is at least partially located forward of the second connection portion 1121 and the third connection portion 1122. Along the height of the motorcycle 100, the first connection portion 1111, the second connection portion 1121, and the third connection portion 1122 are arranged in descending order. The engine 141 is fixedly connected to the frame 11 via the first connection portion 1111, the second connection portion 1121, and the third connection portion 1122. Among them, the engine 141 includes a cylinder head 1411, an upper crankcase body 1412 and a lower crankcase body 1413. The cylinder head 1411, the upper crankcase body 1412 and the lower crankcase body 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 body 1412. The cylinder head 1411 is also at least partially located in front of the upper crankcase body 1412. The first connecting part 1111 is located on the cylinder head 1411, the second connecting part 1121 is located on the upper crankcase body 1412, and the third connecting part is located on the lower crankcase body 1413.

[0039] Furthermore, the engine 141 in the present application is a four-cylinder engine. Due to its large size, the connection between the four-cylinder engine and the frame 11 is relatively cumbersome during installation, 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 adapter bracket 113 is substantially located below the transverse support frame 111 and in front of the longitudinal support frame 112. The adapter bracket 113 basically extends along the height direction of the motorcycle 100. 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. 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 arrangement, the detachable design of the adapter bracket 113 and the cross support frame 111 allows the adapter bracket 113 to be removed first during the installation process of the engine 141 and the frame 11 to obtain a larger installation space. After the engine 141 is fixedly connected to the frame 11 via the first connecting portion 1111, the second connecting portion 1121, and the third connecting portion 1122, the adapter bracket 113 is then connected to the cross support frame 111, and the engine 141 is fixedly connected to the adapter bracket 113 via the fourth connecting portion 1131. This improves the convenience of disassembly and maintenance of the engine 141 and improves the assembly efficiency of the engine 141. In addition, the provision of the adapter bracket 113 can also better match the center of gravity of the frame 11 with the entire motorcycle 100, improve the torsional rigidity of the motorcycle 100 head, 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 there are two transverse support frames 111, two longitudinal support frames 112 and two adapter brackets 113, 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 of the transverse support frames 111, the longitudinal support frames 112 and the adapter bracket 113 on the left and right sides of the motorcycle 100 are substantially coincident, so that the fixing point of the engine 141 is aligned with respect to the longitudinal plane 101 (refer to FIG. 1 ). 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. The connecting transverse tube 114 is basically located at the lower end of the longitudinal support frame 112. The two longitudinal support frames 112 are fixedly connected by the connecting transverse tube 114. The frame 11 also includes a head tube 115 located in front of the transverse support frame 111. 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 tube 115, so that the head tube 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 tube 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. 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 viewed from the side view, the first connecting portion, the second connecting portion, the third connecting portion and the third connecting portion 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 portion 1131 on the longitudinal plane 101 is defined as a fixed point projection, and 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 viewed 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 connecting the projections of the center points of the first connecting portion 1111, the second connecting portion 1121, the third connecting portion 1122, and the fourth connecting portion 1131 onto the longitudinal plane 101 enclose a closed figure. The projection of the engine 141 onto the longitudinal plane 101 is defined as the engine 141 projection. By positioning the fourth connecting portion 1131 on the adapter bracket 113, the present application ensures that the ratio of the area of ​​the closed figure to the area of ​​the engine 141 projection is greater than or equal to 0.5 and less than or equal to 1. That is, when viewed along the width direction of the motorcycle 100, the majority of the engine 141 is located within the closed figure enclosed by the four fixed points. This arrangement ensures that the center of gravity of the engine 141 is located within the closed figure, thereby ensuring more uniform force on the first connecting portion 1111, the second connecting portion 1121, the third connecting portion 1122, and the fourth connecting portion 1131, 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 onto 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 onto 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. This angle α is the interior angle of the triangle formed by the first connecting portion 1111, the third connecting portion 1122, and the fourth connecting portion 1131. The angle α reflects 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°. Furthermore, 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 included angle α between the second connecting line 202 and the third connecting line 203 is 97°. This arrangement can prevent the included angle α from being too large, causing the fourth connecting portion 1131 to be positioned too far back, thereby interfering with the adapter bracket 113 and the engine 141. It can also prevent the included angle α from being too small, causing the fourth connecting portion 1131 to be positioned too far forward, thereby hindering the connection between the adapter bracket 113 and the vehicle frame 11. In addition, when the positions of the first connecting portion 1111, the second connecting portion 1121 and the third connecting portion 1122 remain unchanged, the change in the position of the fourth connecting portion 1131 also causes the area of ​​the closed figure formed by the lines connecting the projections of the fourth connecting portion 1131 and the first connecting portion 1111, the second connecting portion 1121 and the third connecting portion 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 lines connecting the projections of the first connecting portion 1111, the second connecting portion 1121, the third connecting portion 1122 and the fourth connecting portion 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 this application, the cross support frame 111 and the engine 141 are connected via connectors. Specifically, the cross support frame 111 and the engine 141 are connected via bolts, with the bolts extending substantially along the width of the motorcycle 100. The term "the projection of the first connecting portion 1111 on the longitudinal plane 101" herein refers to the projection of the central axis of the bolt connecting the cross support frame 111 and the engine 141 onto the longitudinal plane 101, along the width 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 via bolts, in a manner substantially identical to that of the first connecting portion 1111. Therefore, in the description of this application, "the projection of the second connecting part 1121 on the longitudinal plane 101", "the projection of the third connecting part 1122 on the longitudinal plane 101", "the projection of the fourth connecting part 1131 on the longitudinal plane 101" and the "center point" of the first connecting part 1111 to the fourth connecting 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] On both sides of the motorcycle 100, there are usually protruding anti-fall ball heads, which are usually organic elastic energy-absorbing parts or rigid parts with built-in springs. When the motorcycle 100 falls, the anti-fall ball heads are the first to contact the ground to receive the impact, thereby preventing other parts of the motorcycle 100 from being damaged. Figure 3 As shown, in this embodiment, an anti-fall ball head mounting point 1132 is provided on the adapter bracket 113. 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. 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 assembly 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 assembly 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. When the engine 141 is working, the water 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 engine 141 and keeping the engine 141 at a suitable operating temperature. Specifically, a radiator mounting portion 1133 is provided on the adapter bracket 113, and the radiator 161 is fixedly connected to the adapter bracket 113 via the radiator mounting portion 1133. A water inlet pipe mounting point 1134 is also provided on the adapter bracket 113 located on the right side of the engine 141, 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, thereby preventing the water inlet pipe 162 from shaking due to the impact of the water flow inside the water inlet pipe 162 and causing the water inlet pipe 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 prevent the water inlet pipe 162 from 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 (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. 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 part 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 on the front side of the engine 141, and the adapter brackets 113 on the left and right sides are 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 surface of the radiator 161 is the windward surface. When viewed along the length direction of the motorcycle 100, the front end surface 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 surface 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 by the radiator 161 from blowing out from the upper head pipe 115, causing the driver's body temperature to be higher, 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 backward, so the hot air is mainly blown out through the left and right sides and bottom of the engine 141.

[0047] like Figure 6 As shown, as an implementation method, 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. A first air guide port 1211 and a second air guide port 1212 are provided on the inner lining plate 121. The first air guide port 1211 and the second air guide port 1212 are the main circulation paths for the 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. Because there is a gap between the inner lining 121 and the engine 141, the hot air from the radiator 161 may pass through the gap and reach the rider's knees, feet, and other areas, causing the rider to feel a higher temperature while riding, which may adversely affect the rider's riding experience. It is understood that the "external" mentioned above 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 being blown out of the gap between the inner lining plate 121 and the engine 141. The windshield 1213 is located near 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 perceived temperature. It is understood that the windshield 1213 can be extended and protruded from the inner lining plate 121 through an integral molding process, or the windshield 1213 can be a separate component that 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 FIG. 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 backward 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 perceived 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 matter 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 embodiment, in this 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 in this application is a four-cylinder engine, the cylinder head of the four-cylinder engine is not bilaterally symmetrical. Therefore, in this 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 1215, the windshield 1213 on the inner side of the second lining 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 1215 by gluing, and the thermal insulation pad 1213a is also in contact with the engine, so that the gap between the second lining 1215 and the engine 141 is filled by the thermal insulation pad 1213a to achieve the windshield effect, so that the hot air on the right side is blown out through the air guide port on the second lining 1215 to avoid the hot air blowing to 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 windshield 1213b's blocking effect on hot air. The windshield 1213b is located above the first air guide port 1211 along the height direction of the motorcycle 100, thereby preventing 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 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 hot air from blowing backward to the driver's feet. Further, the area where the driver's knees are located during riding is defined as the knee placement area 107 (refer to Figure 17 ), the first air guide 1211 is basically located in front of the knee placement area 107, and the motorcycle 100 also includes a front pedal 22 (refer to Figure 17), the second air guide 1212 is basically located in front of the front footrest 22, and the second air guide 1212 is directed toward the bottom of the motorcycle 100, so that the paths of the hot air in the first air guide 1211 and the second air guide 1212 do not overlap with the driver's body parts, so as to reduce the driver's perceived temperature when the hot air is discharged and improve the driver's driving experience. A guiding portion 1216 is also provided on the first air guide 1211 and the second air guide 1212, and the guiding portion 1216 is used to change the flow direction of the hot air in the first air guide 1211 and / or the second air guide 1212. In the present application, the guiding portion 1216 can enable the hot air in the first air guide 1211 and the second air guide 1212 to be discharged in a direction away from the motorcycle 100 along the width direction of the motorcycle 100. The guiding portion 1216 of the first air guide 1211 is located behind the first air guide 1211 and is connected to the wind shield 1213, so as to block the wind shield 1213. While the hot air passes through, the 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 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, windshield 1213 blocks the passage of hot air, and guide 1216 redirects the hot air, causing the hot air within first and second air guide ports 1211, 1212 to be blown outward along the width of motorcycle 100 and then toward the rear of motorcycle 100. This prevents the hot air from being blown directly upward toward the driver's knees or backward toward the driver's feet, thereby affecting the driver's normal driving. Furthermore, windshield 163, lining 121, and engine, in conjunction with windshield 1213 and guide 1216, form an air channel for radiator 161, thereby directing the hot air out through specific air guide ports. This effectively reduces the perceived temperature at the driver's knees and feet, enhancing 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. The two 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 the 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 avoiding the motorcycle 100 driver's knee temperature from being too high, causing injury to the driver or affecting the driver's driving experience.

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

[0054] like Figure 9 and Figure 10 As shown, in this embodiment, the heat dissipation assembly 26 includes a radiator 261, which 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 opening 2611 a and is fixedly connected to the heat dissipation opening 2611 a. When viewed along the length direction of the motorcycle 100, the air guide cover 263 basically covers the heat dissipation opening 2611 a.

[0055] In a specific embodiment, the air duct 262 includes an air inlet 2621 and an air outlet 2622. The air inlet 2621 is fixedly connected to the air duct cover 263, and the air outlet 2622 is fixedly connected to the air duct opening of the first lining plate 1214 or the second lining plate 1215. The air duct cover 263 also includes an air guide opening 2631, which is in communication with the heat dissipation port 2611a. The air inlet 2621 and the air guide opening 2631 substantially overlap and are fixedly connected, thereby allowing the hot air blown out of the radiator 261 to be directly discharged through the air duct 262. This makes the entire heat discharge path controllable and reduces the disorder of the hot air discharge. This can not only reduce the accumulation of hot air inside the motorcycle 100, but also prevent the hot air from blowing towards the driver through the gap between the engine 141 and the body cover 12, causing the driver to feel a higher body temperature. 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 process, thereby improving the riding comfort of the driver.

[0056] Furthermore, the air duct 262 extends substantially along the width of the motorcycle 100. Since the engine 141 of the present application is a four-cylinder engine, the larger overall dimensions of the four-cylinder engine result in less space for placement on the left side of the engine 141. Therefore, the air duct 262 of the present application extends rightward along the width of the motorcycle 100 and connects to the inner lining panel 121. It will be appreciated that for other motorcycles with smaller engines 141, the air duct 262 can communicate with the air duct openings on the first lining panel 1214 or the second lining panel 1215. Both the air duct opening 2631 and the air duct 262 can be provided. Thus, the two air ducts 262 connect the air duct openings on the first lining panel 1214 and the second lining panel 1215, allowing hot air to be blown out from both sides of the motorcycle 100, thereby improving the heat dissipation efficiency of the radiator 261. In addition, the air inlet 2621 is fixedly connected to the cooling fan 2611 via fasteners, and the air outlet 2622 is also provided with fasteners to securely connect the air outlet 2622 and the air duct. This prevents the air duct 262 from falling off the cooling fan 2611 due to bumps during the operation of the motorcycle 100, thereby improving the stability of the connection between the air duct 262 and the cooling fan 2611. It will be understood that when the term "air duct" appears in this application, it refers to the first air duct 1211 and / or the second air duct 1212.

[0057] like Figure 10 and Figure 11As shown, a reference plane 102 perpendicular to the rotation axis of the cooling fan 2611 is defined, the front face and the rear face of the radiator 261 are both 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 in a direction perpendicular to the reference plane 102 is basically circular, wherein the projection of the rotation center of the cooling fan 2611 on the reference plane 102 is the center of the circle. In the foregoing, the rotation center of the cooling fan 2611 refers to the rotation axis of the blades in the cooling fan 2611. Specifically, the projection of the air guide opening 2631 onto the reference plane 102 in a direction perpendicular to the reference plane 102 is substantially fan-shaped, with a central angle of 120°. Because the layout space for the air duct 262 is limited by the four-cylinder engine, the present application arranges the air guide opening 2631 on the right side of the air shroud 263, and the left and lower portions of the air shroud 262 are enclosed. This positions the air guide opening 2631 close to the air duct 262, thereby reducing the length of the air duct 262 and facilitating communication between the air guide opening 2631 and the air inlet 2621. With this arrangement, while the layout of the air duct 262 is limited by the outline dimensions of the four-cylinder engine of the present application, the central angle of the projection of the air guide opening 2631 onto the reference plane 102 in a direction perpendicular to the reference plane 102 is 120°. This maximizes the airflow of the air guide opening 2631, thereby improving the heat dissipation efficiency of the radiator 261 and facilitating lowering the overall 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 this 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 limitations of other components, the central angle of the projection of the air duct opening 2631 on the reference plane 102 in a direction perpendicular to the reference plane 102 may also be 90° to facilitate the arrangement of the air duct 262 .

[0059] In this embodiment, the material of the air duct 262 is rubber. The rubber material makes the air duct 262 a hose. During the processing of the frame 11, there is no need to design a special layout space for the air duct 262. During the processing of the air duct 262, its shape can change with the shape 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 Figure 9 As shown, a radiator grille 2612 is further provided on the front face of the radiator 261. The radiator grille 2612 can guide the natural wind on the windward side of the radiator 261, so that the natural wind can blow towards the radiator 261 from the same direction, thereby improving the heat dissipation efficiency of the radiator 261. The radiator grille 2612 also reduces the backflow of hot air, lowering the inlet and outlet temperatures of the radiator 261, which helps optimize the water temperature of the radiator 261 and the temperature perceived by the driver. In addition, when the motorcycle 100 is in motion, the radiator grille 2612 can prevent 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 Figure 12 、 Figure 13 and Figure 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 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. The rear fork 152 is rotationally 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 rotationally connected to the longitudinal support frame 112 and the rear fork 152. Furthermore, the shock absorber 153 is at least partially located between the connecting rod structure 151 and the longitudinal support frame 112 and is rotationally 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, which are rotatably connected to each other, 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, and the front end 1511a is rotatably connected to the connecting cross tube 114. The second connecting rod 1512 includes a first end 1512a and a second end 1512b, and 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 previously mentioned, the connecting cross tube 114 is located substantially below the longitudinal support frames 112 and substantially between the two longitudinal support frames 112 distributed along the width of the motorcycle 100. As an alternative embodiment, the rear fork 152 is also located substantially between the two longitudinal support frames 112 distributed along the width of the motorcycle 100. Since the engine 141 of the present application is a four-cylinder engine, it is relatively large, resulting in a relatively large profile of the engine 141 along the width of the motorcycle 100. Conventional frame designs cannot meet the spatial requirements for arranging the engine 141 of the present application. Therefore, in the present application, the longitudinal support frames 112 are positioned outside the rear fork 152 to increase the profile of the frame 11 along the width of the motorcycle 100, expand the space available for accommodating the frame 11, and thereby meet the space requirements for installing the engine 141. This arrangement also increases the rigidity of the frame 11, enabling it to withstand greater loads. However, this also places a greater impact load on the connecting cross tube 114. 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 Figure 14As shown, in this embodiment, the connecting cross tube 114 is provided with a mounting sheet metal 1141 for connecting to the connecting rod structure 151. Along the length direction of the motorcycle 100, the mounting sheet metal 1141 is located at the rear portion 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 a rotatable connection between the first connecting rod 1511 and the connecting cross tube 114. The mounting sheet metal 1141 is provided at the rear portion of the connecting cross tube 114. The connecting rod structure 151 is located at the rear portion 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 this application, the mounting tube 1142 can be a bushing. Since the mounting sheet metal 1141 is in the production process and the mounting The welding process between sheet metal 1141 and reinforcing tube 119 is prone to errors due to machining deformation, resulting in the error of mounting sheet metal 1141 failing to meet the tolerance requirements when machining the mounting holes later. Therefore, before machining the mounting holes on mounting sheet metal 1141, mounting tube 1142 is first welded to mounting sheet metal 1141 to increase the strength of mounting sheet metal 1141. Then, mounting sheet metal 1141 is machined to ensure that the mounting holes meet the tolerance requirements, thereby facilitating the rotational connection between first connecting rod 1511 and mounting sheet metal 1141. Furthermore, mounting tube 1142 can reduce wear caused by the rotation of first connecting rod 1511 and mounting sheet metal 1141, thereby increasing the service life of connecting rod structure 114.

[0064] Connecting cross tube 114 is also provided with a reinforcing sheet metal 1143. Reinforcing sheet metal 1143 is located between mounting sheet metal 1141 and connecting cross tube 114 and is fixedly connected to mounting sheet metal 1141 and connecting cross tube 114. In the embodiment of the present application, reinforcing sheet metal 1143 is welded to mounting sheet metal 1141 and connecting cross tube 114, thereby increasing the strength of mounting sheet metal 1141 and preventing fracture between mounting sheet metal 1141 and connecting cross tube 114 when motorcycle 100 is driven under extreme road conditions. This further improves the stability of the connection between first connecting rod 1511 and connecting cross tube 114 and the safety of motorcycle 100. It should be understood that the aforementioned welding connection method is only a preferred method in the embodiment of the present application. Reinforcing sheet metal 1143 can also be fixedly connected by bolts. Any method of fixing reinforcing sheet metal 1143 to mounting sheet metal 1141 and reinforcing tube 119 falls within the scope of protection of this application. Furthermore, the power assembly 14 also includes an exhaust pipe 142 and a muffler 143 (refer to Figure 17 ), the muffler 143 includes a middle cylinder 1431 (see Figure 9), a front exhaust pipe 1421 is connected to the power assembly 14 to discharge exhaust gases generated by the power assembly 14, and a middle cylinder 1431 is connected to the front exhaust pipe 1421 to reduce noise generated by exhaust gases. Herein, the middle cylinder 1431 refers to a silencer located at the bottom of the motorcycle 100. The middle cylinder 1431 is located below the connecting rod structure 151. The connecting rod structure 151 can move along the height of the motorcycle 100 with the shock absorber 153. When the connecting rod structure 151 moves to its lowest point, a gap exists between the middle cylinder 1431 and the connecting rod structure 151, with the minimum gap being 12 mm. Specifically, a muffler mounting point 1143a is further provided on the reinforcing 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 reinforcing sheet metal 1143 through the muffler mounting point 1143a. A muffler connecting piece 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 connecting piece 1123 is fixedly connected to the longitudinal support frame 112 by welding, and the middle tube 1431 and the muffler connecting piece 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 preventing the middle tube 1431 from colliding with the connecting rod structure 151 due to vibration during the driving of the motorcycle 100, thereby preventing the middle tube 1431 from affecting the operation of the connecting rod structure 151, so as to avoid affecting the shock absorption effect of the motorcycle 100. The center tube 1431 is connected to the frame 11 at two mounting points located on the left and right sides of the motorcycle 100 along its width, preventing tilting of the center tube 1431 after installation. Furthermore, an engine mounting portion 1144 is provided at the front of the connecting cross tube 114 along the length of the motorcycle 100. The rear end of the power assembly 14 is fixedly connected to the reinforcing tube 119 via the engine mounting portion 1144, enhancing the stability of the connection of the power assembly 14.

[0065] As an optional embodiment, the connecting cross tube 114 of the present application is also provided with a reinforcing tube 119, which 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 arranged 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 greater impact loads. 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-mentioned arrangement, the connecting cross pipe 114 is integrated with the mounting sheet metal 1141 for mounting the connecting rod structure 151, the muffler mounting point 1143a and the engine mounting portion 1144. The connecting cross pipe 114 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 can also improve the connection strength of the frame 11, thereby improving the connection stability of various components on the motorcycle 100.

[0067] like Figure 15 and Figure 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. The aforementioned "inwardly recessed" means that the mounting groove 1521 is recessed toward the side closer 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. This not only reduces the weight of the rear fork 152, thereby improving the lightweight of the motorcycle 100, but also changes the stiffness of the rear fork 152, so that the stiffness of the rear fork 152 matches the stiffness of the frame 11, thereby improving the overall handling of the motorcycle 100. The projection of the rear fork 152 along the width direction of the motorcycle 100 onto the longitudinal plane 101 is defined as the fork projection, and the projection of the hollow portion 1522 along the width direction of the motorcycle 100 onto the longitudinal plane 101 is defined as the 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 configuration, the hollow portion 1522 can minimize the weight of the rear fork 152 without affecting the overall strength of the rear fork 152, thereby improving the lightweightness of the motorcycle 100.

[0068] Furthermore, the rear wheel 132 includes a rear rim 1321 (see Figure 17). When the rear fork 152 and rear wheel 132 are installed, when viewed across the width of the motorcycle 100, the hollow portion 1522 substantially overlaps the rear rim 1321, allowing visibility through the hollow portion 1522. Furthermore, the body panel 12 includes a protective cover 123, which covers the hollow portion 1522 and is fixedly connected to the rear fork 152. This prevents mud and sand from directly passing through the hollow portion 1522 and adhering to the rear rim 1321, thereby preventing mud and sand from accumulating on the rear rim 1321 and affecting the normal operation of the motorcycle 100. The rear fork 152 also includes a connecting sheet metal 1523, through which the protective cover 123 is fixedly connected to the rear fork 152. 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 via the fork connecting portion 1523a, and the shield 123 is fixedly connected to the connecting sheet metal 1523 via 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. The rear fork 152 is provided with a mounting hole 1524 on the inner side. A fastener is passed through the fork connecting portion 1523a and fixedly connected to the mounting hole 1524, thereby fixing the connecting sheet metal 1523 to the rear fork 152. The "inner side" mentioned above refers to the side of the rear fork 152 that is closer to the longitudinal plane 101. Through the above-mentioned setting, the mounting hole 1524 is set 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] Because the front end of the protective cover 123 is easily warped due to uneven force when the protective cover 123 is fixedly connected to the connecting sheet metal 1523 only via the protective cover connecting portion 1523b, the front end of the protective cover 123 is easily warped 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. A snap-fitting groove 1231 is provided on the inner side of the protective cover 123. A snap-fitting member 1523c is sleeved on the front end of the connecting sheet metal 1523. The snap-fitting member 1523c snaps into the snap-fitting groove 1231, thereby snapping the front end of the connecting sheet metal 1523 into the snap-fitting groove 1231 of the protective cover 123. When the protective cover 123 is installed in the mounting groove 1521 and the snap-fitting groove 1231 is snap-fitted into the connecting sheet metal 1523, the protective cover 123 is substantially located within the mounting groove 1521 when viewed from the height direction of the motorcycle 100. The term "interior" as used herein refers to the maximum distance between the protective cover 123 and the longitudinal plane 101 being less than the maximum distance between the mounting slot 1521 and the longitudinal plane 101. In other words, the protective cover 123 cannot be directly observed when viewed from the height of the motorcycle 100. Through this arrangement, the engagement of the connecting member 1523c with the engaging slot 1231 allows the front end of the connecting sheet metal 1523 to rely on its own strength to prevent the protective cover 123 from warping. This allows the side surfaces of the protective cover 123 and the rear fork 152 to form a smooth surface, thereby reducing the wind resistance of the motorcycle 100 and preventing dust accumulation at the connection between the protective cover 123 and the rear fork 152, thereby improving the motorcycle's appearance.

[0070] A through hole 1522d is further provided on the connecting sheet metal 1523, and an elastic member 1523d is passed 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 this application, the protective cover 123 is made of plastic, which not only protects the hollow portion 1522 but also reduces 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. It is understood that the material of the protective cover 123 can also be other materials that can provide protection.

[0071] like Figure 17 、 Figure 18 and Figure 19As shown, the muffler 143 also includes a tail pipe 1432 located at the rear of the motorcycle 100. Along the length of the motorcycle 100, the tail pipe 1432 is located behind the middle pipe 1431. When the motorcycle 100 passes through a flooded road, the tail pipe 1432 can prevent water from entering the exhaust pipe 142 and blocking the exhaust, thereby preventing 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. The rear exhaust pipe 1422 is located between the tail pipe 1431 and the middle pipe 1432. The middle pipe 1431 and the tail pipe 1432 are connected by the rear exhaust pipe 1422, thereby forming an exhaust channel for the power assembly 14 that exhausts from the front exhaust pipe 1421 to the middle pipe 1431, then to the rear exhaust pipe 1422, and finally discharges the exhaust gas from the tail pipe 1432. The motorcycle 100 further includes a saddle assembly 17, which includes a main seat cushion 171 for the driver to sit on, and a secondary 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. The secondary 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 secondary seat cushion 172. The tail cylinder 1432 is located above the rear wheel 132 and 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, with the lowest end of the running assembly 13 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 65 cm and less than or equal to 87 cm. Furthermore, the minimum distance H1 between the exhaust port 1432a and the horizontal plane 103 is greater than or equal to 69 cm and less than or equal to 80 cm. In the embodiment of the present application, the minimum distance H1 between the exhaust port 1432a and the horizontal plane 103 is 72.5 cm. Through the above arrangement, the location of the tail cylinder 1432 can increase the wading height of the motorcycle 100, making the motorcycle 100 more passable. It can also prevent muddy water from entering the exhaust pipe 142 through the exhaust port during driving of the motorcycle 100 and causing the engine 141 to stall, thereby improving the operating 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-mentioned setting, when the height of the tail pipe 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 β angle is set too small, the wading height will be reduced. If the β angle is set too large, the tail pipe 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 without exceeding the appropriate range of the body temperature felt by the passengers, thereby improving the passability and wading performance of the motorcycle 100.

[0073] like Figure 17 and Figure 18As shown, when viewed from the height of the motorcycle 100, the rear fork 152 and the tailpipe 1432 at least partially overlap, meaning the muffler 143 is positioned proximate to the inner side of the rear fork 152. Because the rear fork 152 and the tailpipe 1432 substantially overlap, the rear exhaust pipe 1422 connected to the tailpipe 1432 interferes with the rear fork 152 in the width direction. Optionally, the rear fork 152 further includes a connecting portion 1525 located at the front portion of the rear fork 152. The rear fork 152 is rotatably connected to the longitudinal support frame 112 via the connecting portion 1525. In the present application, an escape groove 1525a is provided on the connecting portion 1525, allowing the rear exhaust pipe 1422 to extend upward from the bottom of the motorcycle 100 through the escape groove 1525a to the bottom of the main seat 171, and then extend rearward to connect with the tailpipe 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. The above arrangement prevents the avoidance groove 1525a from being too large due to a large ratio, thereby affecting the structural strength of the rear fork 152, and also prevents the avoidance groove 1525a from being too small due to a small ratio, thereby affecting the passage of the rear exhaust pipe 1422. Thus, the avoidance groove 1525a allows the tail pipe 1432 and the rear exhaust pipe 1422 to be positioned closer to the inside of the motorcycle 100. This prevents the tail pipe 1432 and the rear exhaust pipe 1422 from colliding with the ground and causing damage to the tail pipe 1432 and the rear exhaust pipe 1422 in the event of a fall. Furthermore, positioning the tail pipe 1432 and the rear exhaust pipe 1422 closer to the inside of the motorcycle 100 can also reduce the width of the motorcycle 100, thereby improving the passability of the motorcycle 100. The inner side mentioned above refers to the side of the motorcycle 100 closer 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 of the motorcycle 100 .

[0074] like Figure 20As shown, in this embodiment, the tailpipe 1432 includes a first tailpipe 1432c and a second tailpipe 1432d distributed along the width of the motorcycle 100. When the rear exhaust pipe 1422 extends through the avoidance groove 1525a to below the main seat cushion 171, the rear exhaust pipe 1422 is divided into the first exhaust pipe 1422a and the second exhaust pipe 1422b. The first exhaust pipe 1422a extends rearward and connects to the first tailpipe 1432c, while the second exhaust pipe 1422b extends along the width of the motorcycle 100 to the left side of the motorcycle 100 and then extends rearward and connects to the second tailpipe 1432d. This arrangement ensures that the first tailpipe 1432c and the second tailpipe 1432d are symmetrical about the longitudinal plane 101, thereby ensuring that the load on the motorcycle 100 is substantially uniform across the width of the motorcycle 100. This position of the center of gravity of the motorcycle 100 is substantially located in the middle of the motorcycle 100, thereby improving the maneuverability of the motorcycle 100. Furthermore, the dual exhaust system of the first exhaust pipe 1422a and the second exhaust pipe 1422b can improve the exhaust efficiency of the motorcycle 100, thereby improving the performance of the power assembly 14. The term "the middle portion of the motorcycle 100" as used herein refers to a point on the longitudinal plane 101 where the distance from the front wheel's rotational axis is equal to the distance from the same point from the rear wheel's rotational axis. In this case, the position of the point represents the middle portion 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 foot pedal bracket 118, one end of the rear foot pedal bracket 118 is fixedly connected to the frame 11, a muffler mounting bracket 1432b is provided on the tail pipe 1432, and the other end of the rear foot pedal bracket 118 is fixedly connected to the muffler mounting bracket 1432b by a fastener, thereby achieving a fixed connection between the tail pipe 1432 and the frame 11, preventing the exhaust pipe 142 and the tail pipe 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 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 this 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 such improvements and changes should fall within the scope of protection of the claims appended to this application.

Claims

1. A motorcycle comprising: Frame; a traveling assembly including a rear wheel 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 rear wheel, the power assembly comprising an engine, an exhaust pipe, and a muffler; a saddle assembly, the saddle assembly being at least partially disposed on the frame; It is characterized in that The muffler includes a tail pipe and a middle pipe. Along the length direction of the motorcycle, the tail pipe is located behind the middle pipe, and the exhaust pipe is used to connect the tail pipe, the middle pipe and the engine; the saddle assembly includes a secondary cushion located at the rear of the frame, the tail pipe is located below the secondary cushion, and when viewed along the width direction of the motorcycle, the tail pipe is located between the rear wheel and the secondary cushion; a preset straight line is defined, and the tail pipe basically extends along the preset straight line, and then a horizontal plane perpendicular to the height direction of the motorcycle is defined, and the lowermost end of the rear wheel is located on the horizontal plane. An angle is formed between the preset straight line and the horizontal plane, and the angle is greater than or equal to 26° and less than or equal to 40°.

2. The motorcycle according to claim 1, characterized in that The middle barrel is at least partially located below the engine; the exhaust pipe includes a front exhaust pipe and a rear exhaust pipe, the front exhaust pipe is at least partially located in front of the engine, the front exhaust pipe is used to connect the engine and the middle barrel, the rear exhaust pipe is located between the tail barrel and the middle barrel, and the tail barrel is connected to the middle barrel through the rear exhaust pipe.

3. The motorcycle according to claim 1, wherein: The tail pipe includes an exhaust port, which is located at the rear end of the tail pipe. The minimum distance between the exhaust port and the horizontal plane is greater than or equal to 65 cm and less than or equal to 87 cm.

4. The motorcycle according to claim 2, characterized in that: The motorcycle further comprises a rear flat fork connected to the rear wheel. When viewed from the height direction of the motorcycle, the rear flat fork at least partially overlaps with the tail cylinder.

5. The motorcycle according to claim 4, characterized in that: The frame includes a longitudinal support frame extending in the height direction of the motorcycle, the rear fork includes a connecting portion, the rear fork is rotatably connected to the longitudinal support frame through the connecting portion, and an avoidance groove is provided on the connecting portion. The saddle assembly also includes a main seat cushion located at the rear of the frame, and the rear exhaust pipe at least partially passes through the avoidance groove and extends upward to the bottom of the main seat cushion, and then extends rearward to be connected with the tail cylinder.

6. The motorcycle according to claim 5, characterized in that The avoidance groove is located on the right side of the connecting portion, defining a longitudinal plane perpendicular to the width direction of the motorcycle and passing through the center of the width of the motorcycle. The avoidance groove is recessed toward the side close to the longitudinal plane, and the ratio of the minimum distance between the avoidance groove and the longitudinal plane to the minimum distance between the connecting portion located on the left side of the motorcycle and the longitudinal plane is greater than or equal to 1.3 and less than or equal to 1.

9.

7. The motorcycle according to claim 2, characterized in that The tail cylinder includes a first tail cylinder and a second tail cylinder distributed along the width direction of the motorcycle, defining a longitudinal plane perpendicular to the width direction of the motorcycle and passing through the width center of the motorcycle. The first tail cylinder and the second tail cylinder are substantially symmetrical about the longitudinal plane.

8. The motorcycle according to claim 7, characterized in that: The rear exhaust pipe is divided into a first exhaust pipe and a second exhaust pipe. The first exhaust pipe is connected to the first tail pipe, and both ends of the second exhaust pipe are connected to the first exhaust pipe and the second tail pipe.

9. The motorcycle according to claim 8, characterized in that A heat shield is provided on one side of the first exhaust pipe and the second exhaust pipe away from the longitudinal plane along the width direction of the motorcycle. The heat shield is arc-shaped and substantially half surrounds the first exhaust pipe and the second exhaust pipe.

10. The motorcycle according to claim 1, characterized in that The vehicle frame further comprises a rear foot pedal bracket, which is fixedly connected to the vehicle frame; a muffler mounting bracket is provided on the tail cylinder, and the rear foot pedal bracket is also fixedly connected to the muffler mounting bracket.

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