CN1378943A - Cover structure of motorcycle - Google Patents

Abstract

The vehicle cover 100 can be separated in front of the muffler 70. A recessed portion is formed at the rear end of the middle cover 111 (front cover) that is recessed toward the center of the vehicle body. A front opening 122 is formed at the front end of the lower cover (rear cover). This front opening 122 and the recessed portion combine to form a large air duct 123 for cooling the muffler 70. For example, the rear cover can be used to cover the front cover, making the interior less visible. This creates a large air duct for cooling the muffler, ensuring sufficient cooling of the muffler.

Description

Cover structure of motorcycle

technical field

The present invention relates to a vehicle cover structure of a motorcycle.

Background technique

As a cover structure for a motorcycle, for example, "a motorcycle with a cover" disclosed in Japanese Utility Model Publication No. 2-10071 is known.

The above-mentioned technology, according to Fig. 2 and Fig. 3 of the same publication, in the above-mentioned motorcycle with a car cover, the running wind inlet 71 and the guide part 72 for introducing the running wind are integrally arranged on the lower side of the lower cover 47. 49, the exhaust pipe 32 and the expansion chamber 33 are actively cooled by introducing the traveling wind from the traveling wind inlet 71.

But above-mentioned two-wheeled motor vehicle with car cover, when the running air inlet 71 is enlarged, it is often easy to see the part surrounded by the lower cover 47.

In addition, if the traveling wind inlet 71 cannot be made sufficiently large, prescribed traveling wind cannot be introduced into the exhaust pipe 32 and the expansion chamber 33, and the exhaust pipe 32 and the expansion chamber 33 cannot be effectively cooled.

Contents of the invention

Therefore, it is an object of the present invention to provide a cover structure for a motorcycle in which sufficient air guide openings are opened in the cover to allow sufficient introduction of running wind.

In order to achieve the above object, the first aspect of the present invention provides a motorcycle cover structure in which an engine is disposed between the front and rear wheels, a muffler is disposed below the engine, and the vehicle cover Surrounding the left and right sides of the muffler, it is characterized in that the car cover can be divided at the position in front of the muffler, a recessed part is formed at the rear end of the front side cover to the center of the vehicle body, and a front opening is formed at the front end of the rear side cover. A large air guide for cooling the muffler is formed by combining the recessed part and the front opening.

For example, cooling the muffler of a motorcycle by using the running air is preferable from the viewpoint of environmental protection because it is only necessary to use the natural running wind.

In addition, at the position in front of the muffler, the car cover can be divided into a front side cover and a rear side cover. The front opening, and the combination of the recessed portion of the rear end of the rear side cover and the front opening of the rear side cover forms a cylindrical air guide.

That is to say, by combining the front opening and the recess, for example, the front side cover can be covered with the rear side cover, and the interior can not be easily seen. As a result, a large air guide for cooling the muffler can be formed, which can Cool the muffler sufficiently.

The second technical solution of the present invention is characterized in that the side portion of the crankshaft of the engine is covered with a cover member, a flange portion is formed around the cover member, and these cover members and the flange portion are removed from the above-mentioned vehicle cover together. exposed.

Since the side portion of the crankshaft of the engine is covered with a cover member, a flange portion is formed around the cover member, and these cover members and the flange portion are collectively exposed from the above-mentioned car cover, so the area of the car cover becomes small, As a result, the car cover can be made to look small, and a light design can be realized.

Description of drawings

Fig. 1 is a side view of a motorcycle using the vehicle cover structure of the present invention

Fig. 2 is a perspective view of main parts of an intake/exhaust structure mounted on a cover structure of a motorcycle according to the present invention.

Fig. 3 is a plan sectional view of a muffler used in the cover structure of the motorcycle of the present invention.

Fig. 4 is a perspective view showing the structure of the motorcycle cover of the present invention, viewed from the front of the vehicle cover.

Fig. 5 is a perspective view showing the structure of the motorcycle cover of the present invention, viewed from the side of the vehicle cover.

Fig. 6 is a side view of the rear fender showing the cover structure of the motorcycle of the present invention.

Detailed ways

Embodiments of the present invention will be described below with reference to the accompanying drawings. "Front", "Rear", "Left", "Right", "Up" and "Down" refer to the direction seen from the driver, and the drawing surface is the drawing seen from the direction indicated by the symbol.

Fig. 1 is a side view of a motorcycle employing the vehicle cover structure of the present invention, showing the appearance of the motorcycle.

The motorcycle 10 has a front wheel 32 mounted on the front of the frame 20 via a front fork 31, a rear wheel 34 mounted on the rear of the frame 20 via a swing arm 33, and a rear wheel 34 mounted on the center of the frame 20 in the longitudinal direction. The lower engine 40 , the air cleaner 53 , the fuel tank 55 , and the vehicle seat 56 are mounted on the center upper portion in the longitudinal direction of the vehicle frame 20 .

The present invention is characterized in that an inline four-cylinder engine 40 is disposed between the front wheels 32 and rear wheels 34 , and a muffler 70 is disposed below the engine 40 . The muffler 70 is attached to the vehicle frame 20 or the engine 40 .

In addition, the vehicle cover 100 of the motorcycle 10 is composed of a front cover 101 covering the upper part of the front part of the vehicle body, and a left and right middle cover 111 covering the middle part of the front part of the vehicle body (only the right side is shown in this figure. The same applies hereinafter). 1. The left and right under covers 121 covering the lower part of the vehicle body and the side surfaces of the muffler 70 and the rear cover 131 surrounding the rear part of the vehicle body are constituted.

The front cover 101, the left and right middle covers 111 and the left and right lower covers 121 are detachably combined by set screws. Specifically, the vehicle cover 100 can be divided into the upper front parts of the left and right middle covers (front side covers) 111 facing the lower part of the front cover 101, and can be divided into the lower part of the middle cover 111 at the position in front of the muffler 70. The front end portion of the lower cover (rear side cover) 121 whose rear end faces.

The front cover 101 is provided with a windshield 102 at the upper part, and is provided with a pair of left and right air intake ports 103 at the front part.

In addition, on the lower rear end of the middle cover (front side cover) 111, a recessed portion 112 is formed to the center of the vehicle body, and on the front end of the lower cover (rear side cover) 121, a front opening 122 is formed. Together with the recessed portion 112, a large air guide opening 123 for cooling the muffler 70 can be formed.

In addition, this figure shows that the rear fender 140 arrange|positioned under the rear cover 131 is attached to the swing arm 33. As shown in FIG. The present invention is characterized in that the lower edge 132 of the rear cover 131 is inclined substantially linearly rearward and upward, and the upper surface 141 of the rear fender 140 is parallel to the lower edge 132 of the rear cover 131 .

In the figure, 47 is a crankshaft of the engine, 48 is a cover part (crank cover), 91 is a handlebar, 92 is a rearview mirror, 93 is a headlight, 94 is a direction indicator, 95 is a front fender, and 96 is a rear view mirror. The buffer unit, 97, is a link for a buffer. The rear portion of the muffler 70 extends to the vicinity of the damper link 97 .

Fig. 2 is a perspective view of main parts of the intake/exhaust system structure mounted on the cover structure of the motorcycle of the present invention.

The air intake system 51 of the motorcycle 10 consists of a pair of left and right air intakes 103 provided on the front cover 101 shown in FIG. Conduit) 52,52, the air cleaner 53 that is connected at the end portion of these air conduits 52,52 constitutes. The air cleaner 53 is disposed between the pair of left and right main pipes 21 , 21 of the vehicle body frame 20 . 22 is the head pipe.

The engine 40 is a 4-cylinder engine in which four exhaust ports 41 to 44 are arranged in a row on the upper front, and an oil pan 45 is provided on the lower rear.

The exhaust system 58 of the motorcycle is a device that discharges exhaust gas through an exhaust pipe 60 extending from the exhaust ports 41 to 44 of the engine 40 and a muffler connected to the exhaust pipe 60 .

As the muffler 70 , a gas outlet 74 is provided near the gas inlet 73 . The muffler 70 is arranged below the engine 40 with the gas inlet 73 facing the rear wheel 34 side, and the exhaust pipe 60 is connected to the inlet of the muffler 70 while extending to the vicinity of the rear wheel 34. 73 on.

Here, the four exhaust ports are referred to as the first exhaust port 41, the second exhaust port 42, the third exhaust port 43, The fourth exhaust port 44 .

The exhaust pipe 60 is composed of 4 pipes (the first pipe 61, the second pipe 62, the third pipe 63 and the fourth pipe 64) and three collecting tubes (the first collecting tube 65, the second collecting tube 66 and the third collecting tube). Barrel 67) constitutes.

The first pipe 61 whose one end is connected to the first exhaust port 41 extends rightward and downward, and then extends rearward through the right side of the oil pan 45 . Equally, the 2nd pipe 62 that one end is connected on the 2nd exhaust port 42 also also extends to the lower right side and then extends rearwardly through the right side of the oil pan 45 . Furthermore, the other end of the first tube 61 and the other end of the second tube 62 are connected to the first collection tube 65 to form one tube. The first collection tube 65 extends rearward after passing the right side of the oil pan 45, and then extends leftward.

In addition, the third pipe 63 , one end of which is connected to the third exhaust gas 43 , extends downward and leftward, and then extends rearward through the left side of the oil pan 45 . Similarly, the fourth pipe 64 whose one end is connected to the fourth exhaust port 44 also extends downward to the left, and then extends rearward through the left side of the oil pan 45 . And the other end of the 3rd pipe 63 and the other end of the 4th pipe 64 are connected to the 2nd collection cylinder 66, and it integrates into 1 pipe. The second collection tube 66 extends rearward through the left side of the oil pan 45 .

Furthermore, the other end of the first collection tube 65 and the other end of the second collection tube 66 are connected to the third collection tube 67 and assembled into one tube. In this way, the four tubes 61 to 64 can be collected into one collecting tube 67 . Furthermore, the third collection tube 67 is extended rearward and connected to the gas inlet 73 .

Fig. 3 is a plan sectional view of a muffler adopting the vehicle cover structure of the motorcycle according to the present invention.

The muffler 70 is composed of a closed cylindrical tube part 71 which is elongated in the front-rear direction, a gas inlet 73 and a gas outlet 74 provided on the rear end part 72 of the tube part 71, and the inside of the tube part 71 is divided into three in the longitudinal direction. The first partition plate 78 and the second partition plate 79 of the expansion chambers 75 to 77 are configured.

In the cylindrical portion 71 thus formed, a first inflation chamber 75 , a second inflation chamber 76 , and a third inflation chamber 77 can be sequentially provided from the rear end portion 72 toward the front (right side in the figure). Make the first inflation chamber 75 communicate with the gas inlet 73, communicate the third inflation chamber 77 with the first inflation chamber 75 with the first communication pipe 81, communicate the second inflation chamber 76 with the third inflation chamber with the second communication pipe 82 On the chamber 77, the gas outlet 74 is connected to the second expansion chamber 76 by the third communication pipe 83, and the tail pipe 84 is connected to the gas outlet 74.

The exhaust sound can be attenuated by the expansion action of the exhaust gas when it enters the first, second, and third expansion chambers 75-77.

Fig. 4 is a perspective view showing the structure of the motorcycle cover of the present invention, viewed from the front of the vehicle cover. As mentioned above, 111 is the middle cover as the front side cover, 112 is the recessed part of the middle cover 111, 121 is the lower cover as the rear side cover, 122 is the front opening, and 123 is formed by the recess 111 and the front opening 122. The air guide port, 124 ... (... represents a plurality, hereinafter the same) is the fixing screw that the lower cover 121 is fixed on the vehicle body frame 20 (referring to Fig. 1 ).

Fig. 5 is a perspective view showing the structure of the motorcycle cover of the present invention, viewed from the side of the vehicle cover.

That is to say, the vehicle cover structure of the motorcycle of the present invention is that the engine 40 is disposed between the rear wheels 32, 34 (see FIG. 1 ), the muffler 70 is disposed below the engine 40, and the vehicle cover 100 In the motorcycle 10 surrounding the left and right sides of the muffler 70, the vehicle cover 100 is detachable at a position in front of the muffler 70, and a depression is formed on the rear end of the middle cover 111 (front side cover) toward the center of the vehicle body. A front opening 122 is formed on the front end of the lower cover 121 (rear side cover), and a large air guide port 123 for cooling the muffler 70 is formed by combining the front opening 122 and the recessed part 112.

For example, cooling the muffler 70 and the like of the motorcycle 10 (see FIG. 1 ) using running wind is preferable from the viewpoint of environmental protection because only natural running wind is sufficient.

In addition, at the front position of the muffler 70, the car cover 100 can be divided into a middle cover 111 and a lower cover 121, and a concave portion 112 sunken to the center of the vehicle body is formed on the rear end of the middle cover 111, and on the front end of the lower cover 121, The front opening 122 is formed, and the air guide opening 123 is formed by combining the recess 112 at the rear end of the lower cover 111 and the front opening 122 of the lower cover 121 .

That is, by combining the front opening 122 and the recessed portion 112, for example, the middle cover 111 can be covered with the lower cover 121, and the inside can be hardly seen. As a result, large air guide ports 123 for cooling the muffler 70 can be formed, and the muffler 70 can be sufficiently cooled.

In addition, the side portion of the crankshaft 47 of the engine 40 is covered with a crankshaft cover 48 (cover member), and a flange portion 48a is formed around the cover member 48. (refer to FIG. 1 ), the area of the car cover is reduced, and as a result, since the car cover 100 appears small, a light appearance can be formed.

Fig. 6 is a side view of a rear fender adopting the vehicle cover structure of the motorcycle of the present invention. If the appearance of the motorcycle 100 is improved by adding new functions other than the mudguard to the rear fender 140, it is ideal that a novel appearance of the motorcycle can be formed.

In addition, the rear fender 140 is formed such that the lower edge 132 of the rear cover 131 is inclined substantially linearly upward and rearward, and the upper surface of the rear fender 140 is inclined substantially linearly upward and rearward parallel to the lower edge 132 of the rear cover 131 . In the figure, 35 is a rear axle, 36 is a pivot, and 142 is a protrusion formed on the rear fender 140 .

That is to say, the rear fender structure of the so-called motorcycle is to surround the vehicle body rear portion with the rear cover 131, and the rear fender 140 disposed below the rear cover 131 is mounted on the swing arm 33, In such a motorcycle 10, the lower edge 132 of the rear cover 131 is inclined substantially linearly rearward and upward, and the upper surface of the rear fender 140 is substantially linearly upward and rearward parallel to the lower edge 132 of the rear cover 131. tilt.

The structure of the rear fender of the motorcycle, since the upper surface of the rear fender 140 is parallel to the lower edge 132 of the rear cover 131 and is inclined substantially linearly to the rear and upward, so the lower edge 132 of the rear cover 131 and the rear surface of the rear cover 131 can be improved. The flow of running wind between the fender 140 and the upper rear. As a result, a downward force is generated on the rear fender 140, and the effect of the rear spoiler that presses the rear wheel 34 downward can be added. In addition, since the effect of the rear spoiler is added to the exterior design of the motorcycle 10, the design level of the motorcycle 10 can be improved.

In addition, since the rear fender 140 is provided with the protrusion 142 protruding rearward of the rear axle 35, the creativity of the appearance can be improved.

And, on the approximate center of the vehicle body, a rear buffer unit 96 is provided between the swing arm 33 and the vehicle body frame 20 (see FIG. 1 ). The lower end of the rear buffer unit 96 is combined with the bottom of the vehicle body frame 20, so, for example, the upper and lower sides of the rear wheel 34 and the rear cover 131 can be opened. As a result, running wind can be sucked around the rear fender 140 , and the effect of the rear spoiler can be exhibited on the rear fender 140 .

In addition, since the side of the rear fender 140 is open, walking wind can be blown into the side of the rear fender 140 , and the effect of a rear spoiler can be exerted on the rear fender 140 .

And, in the embodiment, as shown in Figure 5, the front opening 122 and the recessed part 112 are combined to form the air guide port 123, and the recessed part 112 can also be extended to the rear of the vehicle body, and the air guide port can be made into the shape of a channel. Making the air guide in the shape of a channel can improve the cooling efficiency of the muffler.

The present invention exhibits the following effects due to the above configuration.

In the first technical solution, the vehicle cover is detachable at a position in front of the muffler, a recessed portion is formed at the rear end of the front side cover toward the center of the vehicle body, and a front opening is formed at the front end of the rear side cover, so that the The front opening and the recess are combined, and since the front opening and the recess are combined, for example, the front side cover can be covered with the rear side cover, and the inside can not be seen easily. As a result, large air guide ports for cooling the muffler can be formed, and the muffler can be sufficiently cooled.

In the second technical solution, the side portion of the crankshaft of the engine is covered with a cover member, and a flange portion is formed around the cover member. Since the cover member and the flange portion are collectively exposed from the above-mentioned vehicle cover, the The area of the car cover is reduced, and as a result, the car cover can be made to look small, so a light appearance can be made.

Claims (2)

1. A cover structure of a motorcycle, in which an engine is arranged between the front and rear wheels, a muffler is arranged below the engine, and the left and right sides of the muffler are surrounded by a cover, and It is characterized in that the above-mentioned car cover can be separated at the front position of the muffler, a recessed part is formed at the rear end of the front side cover to the center of the vehicle body, and a front opening is formed at the front end of the rear side cover. Combined with the above-mentioned recessed portion, a large air guide opening for cooling the muffler is formed. 2. A cover structure for a motorcycle, characterized in that the side portion of the crankshaft of the above-mentioned engine is covered with a cover member, and a flange portion is formed around the cover member, and these cover members and the flange portion are collectively protruding from the above-mentioned car cover.

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