WO2003001048A1

WO2003001048A1 - Air cleaner structure of motorcycle

Info

Publication number: WO2003001048A1
Application number: PCT/JP2001/005253
Authority: WO
Inventors: Yasuhiro Takada; Shoichiro Sato
Original assignee: Honda Giken Kogyo Kabushiki Kaisha
Priority date: 2001-06-20
Filing date: 2001-06-20
Publication date: 2003-01-03
Also published as: CN1520492A; JPWO2003001048A1; BR0117047A; BR0117047B1; AR034028A1; TW568854B; GR20020100263A; KR20020096854A; KR100504623B1; CN1304750C; JP3537817B2

Abstract

An air cleaner structure of a motorcycle, wherein a pair of right and left side suction ducts of an air cleaner are installed at the upper part of the air cleaner in the state of being inclined so as to be formed generally in V-shape on both sides of a main frame as viewed from the rear part of a body, whereby the height and the size of the air cleaner can be reduced, and thus the air cleaner can be easily connected, for example, to a carburetor through a clearance between the main frame and an engine, the degree of freedoms for arrangement of the air cleaner on the body can be increased, a storage space before assembly thereof on the body can be reduced, the handling thereof during the transportation can be facilitated, and the height of a body cover disposed over the air cleaner can be reduced so as to improve the easiness for a crew to ride on and off the motorcycle.

Description

Description Motorcycle air cleaner structure Technical field

The present invention relates to a motorcycle air cleaner structure suitable for downsizing an air cleaner. Background art

As an air cleaner structure of a motorcycle, for example, a structure described in Utility Model Registration No. 2513803, “Air Cleaner for Motorcycle Engine” is known. This air cleaner is disposed below the main frame and above and in front of the engine. The air cleaner is composed of a front half and a rear half, and a duct is protruded above the rear half to form a duct. An air intake port is provided at the upper end of the main frame, and this air intake port faces the reinforcement gusset attached to the main frame.

If the duct part protrudes upward as in the above technology, the air cleaner becomes large, and the duct part is arranged on the side of the main frame so as not to interfere with the main frame. The air cleaner is difficult to assemble, and the position of the air cleaner is restricted. Also, if the air cleaner becomes large, it will be disadvantageous in terms of securing a storage place before assembly to the vehicle body and handling during transportation.

Also, if the duct is projected upward, the duct and the front cover are likely to interfere with each other. Therefore, it is necessary to raise the front cover in order to prevent interference with the duct part. In this case, when the occupant gets on and off, the foot of the occupant easily interferes with the front cover. Disclosure of the invention

An object of the present invention is to reduce the size of the air cleaner in a motorcycle air cleaner structure, thereby facilitating assembly to a vehicle body, increasing the degree of freedom of arrangement, and securing and transporting a storage space before assembly. In addition to making it easy to handle when The purpose is to reduce the height of the vehicle body par located above and improve the occupant's getting on and off

According to the present invention, there is provided a motorcycle in which a main frame is extended rearward and downward from a head pipe, an engine is attached to a lower portion of the main frame, and an air cleaner is disposed above the engine. The air intake duct of the air cleaner is provided in a pair on the left and right at the top of the air cleaner, and the intake duct is inclined so that it is almost V-shaped across the main frame when the air cleaner is viewed from the rear of the vehicle. It is characterized by.

As described above, in the first invention, the intake duct is inclined so as to have a V-shape across the main frame when the air cleaner is viewed from the rear of the vehicle body. Thus, the height of the air cleaner can be reduced, and the air cleaner can be reduced in size. Therefore, the air cleaner can be easily assembled between the main frame and the engine, for example, on the cab side. In addition, the degree of freedom in arranging the air cleaner on the vehicle body can be increased. Furthermore, the storage space before assembly to the vehicle body can be reduced, and handling during transportation can be facilitated.

Further, as the height of the air cleaner is reduced, the height of the vehicle body cover disposed above the air cleaner can be reduced, so that the occupant's getting on and off can be improved.

Further, according to the present invention, the air cleaner cover is aligned with the air cleaner case in a state where the recess provided in the air cleaner case is shifted from the recess provided in the air cleaner cover covering the opening of the air cleaner case. It is characterized by having an S-shaped cross section.

As described above, according to the present invention, the intake duct having an S-shaped cross section is formed by the recess on the air cleaner case side and the recess on the air cleaner cover side. As a result, the number of parts can be reduced as compared with the case where the intake duct is separated from the air cleaner case and the air cleaner cover, and the man-hour for assembling the intake duct can be reduced. Therefore, the production cost of the air cleaner can be suppressed.

Further, for example, the shape of the molding die can be simplified as compared with the case where the intake duct is integrated with the air cleaner case or the air cleaner cover. Further, by forming the intake duct in an S-shaped cross section, the length of the intake duct can be increased, and the intake noise of the engine can be easily reduced.

Still further, the present invention is characterized in that the air cleaner cover is extended upward from the air cleaner case to form an extension, and the opening of the intake duct is formed substantially diagonally in the extension. .

Thus, in the present invention, the opening of the intake duct is formed substantially diagonally in the extension. Thus, for example, if the connecting tube connected to the breaker is provided in the air cleaner case, the length of the intake duct can be set to be large from the air cleaner cover to the air cleaner case, thereby reducing intake noise. The intake duct length can be easily adjusted.

In addition, the extension can enhance waterproofness and reinforce the opening, and furthermore, by providing the opening substantially diagonally in the extension, a predetermined opening area of the opening can be secured. The extension can be reduced in size.

Further, according to the present invention, the intake duct is formed below a portion where the air cleaner is attached to the main frame.

As described above, according to the present invention, the intake duct is formed below the mounting portion of the air cleaner. As a result, the intake duct does not protrude above the mounting portion, and it is possible to prevent parts such as the body cover attached to the main frame from interfering with the intake duct.

Furthermore, the present invention is characterized in that an upright wall is provided at the edge of the opening of the intake duct to prevent rainwater from entering the intake duct.

As described above, according to the present invention, it is possible to prevent rainwater from entering the intake duct by the upright wall of the intake duct opening, and the air cleaner has a simple structure such that the upright wall is integrally formed with the air cleaner cover. It is possible to extend the replacement time of the small air filter element in one unit. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a side view of a motorcycle employing an air cleaner structure according to the present invention. FIG. 2 is a side view illustrating the air cleaner structure according to the present invention. FIG. 3 is an exploded perspective view illustrating an air cleaner structure according to the present invention.

FIG. 4 is a perspective view illustrating an air cleaner structure according to the present invention.

FIG. 5 is a rear view illustrating the air cleaner structure according to the present invention.

FIG. 6 is a view taken in the direction of arrow 6 in FIG.

FIG. 7 is a view taken in the direction of arrow 7 in FIG.

FIG. 8 is a view taken in the direction of arrow 8 in FIG.

FIG. 9 is a first operation diagram illustrating the operation of the air cleaner structure according to the present invention. FIG. 10 is a second operational diagram illustrating the operation of the air cleaner structure according to the present invention. FIG. 11 is a third operation diagram illustrating the operation of the air cleaner structure according to the present invention. FIG. 12 is a cross-sectional view taken along line 12-2 in FIG. BEST MODE FOR CARRYING OUT THE INVENTION

FIG. 1 is a side view of a motorcycle employing an air cleaner structure according to the present invention. The motorcycle 10 includes a body frame 13 composed of a main frame 11 and a rear frame 12 attached to a rear portion of the main frame 11, and a head pipe 1 is provided in front of the main frame 11. The front fork 16 is attached to the head pipe 15 so that it can be steered, the front wheel 17 is attached to the lower end of the front fork 16, and the same handle is attached to the upper end of the front fork 16. The engine 21 is attached to the rear of the main frame 11 and the swingarm 22 is swingably attached. The rear wheel 23 is attached to the rear end of the swing arm 22 and a pair of rear cushion units 2 are mounted. Attach the lower ends of 4 and 24 (the back side symbol 24 is not shown) and attach the upper ends of these rear cushion units 24 and 24 to the rear frame 12 and the fuel tank to the rear frame 12 2 5 and Install the chromatography Bok 2 6, a vehicle in which to place the air cleaner 2 7 of the present invention over the aforementioned engine 2 1.

Here, 3 1 is a headlamp, 3 2 is a front cover, 3 3 is a leg shield, 3 4 is a front fender, 3 5 is a side cover, 3 6 is a side stand, 3 7 is a main stand, 3 8 Is a tail lamp and 41 is a lyafenda.

FIG. 2 is a side view for explaining an air cleaner structure according to the present invention. The main frame 11 is provided with bolts 51 and 51 (the back side reference numeral 51 is not shown) and the air cleaner 27 is provided. It shows that the upper part was attached, the carburettor 52 was attached to the lower part of the air cleaner 27 via a connecting tube (described later), and this calibrator 52 was connected to the engine 21 (see FIG. 1) via the intake pipe 53.

The leg shields 33 are arranged in front of both feet of the rider, and are arranged above the air cleaner 27 and above the main frame 11. Reference numeral 54 denotes a mounting portion of the leg shield 33 to the main frame 11.

FIG. 3 is an exploded perspective view illustrating an air cleaner structure according to the present invention. The air cleaner 27 is located in front of the body of the air cleaner 55 and the side of the body of the air cleaner 55 (the direction indicated by a white arrow (front) in the figure is the front of the body. The same applies hereinafter). An air cleaner cover 57 for closing the provided opening 56, an air filter element 58 interposed between the air cleaner case 55 and the air cleaner cover 57, a peripheral portion of the air cleaner cover 57 and an air filter. A first seal member 61 for sealing between the peripheral edge of the element 58 and a second seal for sealing between the peripheral edge of the air filter element 58 and the peripheral edge of the air cleaner case 55. A first drain tube 64 and a second drain tube 65 for discharging water separated from air in the air cleaner 27. 67 and 68 are retaining members for the first and second drain tubes 64 and 65, respectively, and 71 (... are plural. The same applies to the following.) Is an air cleaner cover 55 in the air cleaner case 55. Screws for fixing 57, 72 are connecting tubes for connecting the inside of the air cleaner case 55 and the inside of the cable 52 (see Fig. 2), 73 are band members for fixing the connecting tube 72 to the cable 52, 74, 75 Are bolts and nuts for tightening the band member 73.

FIG. 4 is a perspective view illustrating the air cleaner structure according to the present invention, and is a view of the air cleaner 27 as viewed from the air cleaner casing 55 side.

The air cleaner 27 is provided with a pair of left and right extending portions 77 and 78 at the upper rear part of the air cleaner cover 57, and these openings 77 and 78 are provided with openings 81 and 82, respectively. Portions 81 and 82 are openings of an intake duct to be described later. The openings 81, 82 are portions provided with upright walls 83, 84 at the edges.

The extension portions 77 and 78 are larger than the openings 81 and 82 and are formed. Openings 81 and 82 were formed substantially diagonally to the protrusions 77 and 78.

As described above, since the extending portions 77 and 78 are formed larger than the openings 81 and 82, it is possible to prevent rainwater and the like from entering the openings 81 and 82 from the front of the vehicle body. it can. Here, reference numeral 86 denotes a secondary air discharge port provided in the air cleaner case 55 behind the extending portion 77 to supply secondary air from the air cleaner 27 to the exhaust passage of the engine, and 87 denotes an engine. A blow-by gas inlet for introducing blow-by gas from the air cleaner 27 into the air cleaner 27, and an air outlet 88 for supplying air to the slow system of the carburetor 52 (see Fig. 2).

FIG. 5 is a rear view for explaining the air cleaner structure according to the present invention, and shows openings 81, 82 (openings 81, 82 for easy understanding of the shape) of the air cleaner cover 57. The left and right intake ducts 12 1 and 12 2 (details will be described later), including, are tilted by an angle に対して with respect to the vertical line 82, respectively. In the figure, the main frame 11, the bolts 51, 51, and the leg shield 33 are shown in order to show the mounting state of the air cleaner 27.

As described above, the height of the air cleaner cover 57 and, consequently, the height of the air cleaner 27 are reduced by tilting the left and right air intake ducts 1 2 1 and 1 2 2 that suck air into the air cleaner 27. <can do.

In order to further reduce the height of the air cleaner cover 57, it is conceivable to incline the left and right intake ducts until they become horizontal. In this case, however, the width of the air cleaner cover is large. Become. On the other hand, in the present invention, the left and right intake ducts 121 and 122 are not tilted until they become horizontal, preferably 0 = 45. By inclining at an angle of up to 75 °, the height of the air cleaner cover 57 is reduced, and the increase in the width of the air cleaner is suppressed. In addition, as will be described later, the left and right intake ducts 1 2 1 , 1 2 2 length can be increased.

FIG. 6 is a view (back view) of the air cleaner cover 57 viewed from the arrow 6 in FIG.

The air cleaner cover 57 includes an extension portion 77, 788 extending upward, an opening 81, 82 opened substantially diagonally to the extension portion 77, 78. Cover-side recesses 9 2, 9 3 following the openings 8 1, 8 2 and these cover-side recesses 9 2, 9 It has a cylindrical portion 94 protruding from the wall between the three, and an annular first seal groove 95 for fitting the first seal member 61 (see FIG. 3). Reference numeral 96 denotes a first drain tube to which the first drain tube 64 (see FIG. 3) is attached, and 97 and 98 are formed to be continuous with the upright walls 83 and 84 and have an upper convex portion lower than the upright walls 83 and 84. It is. FIG. 7 is a view taken in the direction of arrow 7 in FIG. The air filter element 58 is composed of a filter 101 for purifying air and a frame 102 supporting the filter 101, and the first seal member 61 (FIG. ) And the second annular projection 104 (projected to the back side of the frame 102) against the second annular projection 103 and the second seal member 62 (see FIG. 3). This is a member formed with an upper trapezoidal portion 102a in which air passage holes 105, 106 that serve as air passages are formed in an upper portion of the frame 102. Reference numeral 107 denotes a baffle plate projecting from the back of the frame 102 and below the filter 101 (details will be described later), and reference numeral 108 denotes a straight line provided horizontally at the upper end of the center of the back of the frame 102. The convex part 109 is a connecting member provided between the air passage holes 105 and 106.

FIG. 8 is a front view of the air cleaner case 55 as viewed in the direction indicated by the arrow 8 in FIG. The air cleaner case 55 has a pair of left and right case-side recesses 11 1, 1 12 provided at an upper portion thereof and an annular second seal groove 1 1 for fitting the above-mentioned second seal member 62 (see FIG. 3). 3, a maze-structured oil separator 1 1 4 to separate oil from the blow-by gas sucked in from the blow-by gas inlet 87, and a tube mounting hole for attaching the connecting tube 72 (see Fig. 4) 1 1 and 5 are provided.

Here, 1 16 is the bypass gas discharge hole of the oil separating section 1 1 4, 1 1 7 is the 2nd drain pipe to which the 2nd drain tube 65 (see Fig. 3) is attached, and 1 1 8 is the air cleaner cover. Upper grooves for inserting the upper protrusions 97, 98 (see Fig. 6) of the air fill element 58 (see Fig. 7) and the linear protrusions 108 (see Fig. 7) of the air filter element 58 (see Fig. 7). 20 is a mounting part for mounting to the main frame 11 (see Fig. 2).

The operation of the above-described air cleaner structure will now be described.

FIG. 9 is a first operation diagram for explaining the operation of the air cleaner structure according to the present invention, and shows the assembly procedure of the air cleaner, in particular, the second seal member 62 attached to the air cleaner case 55. The procedure for assembling the air filter element 58 is shown below.

First, the second seal member 62 is fitted into the second seal groove 113 of the air cleaner case 55, and then the second annular projection 104 of the air filter element 58 is fitted to the second seal member 62. Then, the second annular convex portion 104 is inserted into the second seal groove 113 in such a manner as to make contact.

The upper part of the second seal member 62 seals below the case-side recesses 111, 112 of the air cleaner case 55 and below the air passage holes 105, 106 of the air filter element 58. .

FIG. 10 is a second operation diagram for explaining the operation of the air cleaner structure according to the present invention. The air cleaner case 5 incorporating the air filter element 58 described with reference to FIG. FIG. 5 shows how to attach the air cleaner cover 57 via the first seal member 61 shown in FIG.

First, the first seal member 61 is fitted into the first seal groove 95 of the air cleaner cover 57, and then the first seal member 61 is fitted into the first annular projection 103 of the air filter element 58. And attach the air cleaner cover 57 to the air cleaner case 55 (see Fig. 9).

FIG. 11 is a third operation diagram illustrating the operation of the air cleaner structure according to the present invention, and the flow path of the air in the air cleaner 27 will be described in order. The air cleaner 27 will be described in a disassembled state so that the air flow can be easily understood. Although the air flows into the air cleaner 27 from the left and right openings 81 and 82, the flow of the air is symmetrical left and right, so only the flow of the air taken in from the left opening 81 will be described. (The same applies hereinafter.)

First, as shown by the arrow ①, the air that has entered the air cleaner through the opening 81 makes a U-turn at the cover-side recess 92 as shown by the arrow 、, and the upper trapezoidal portion 102 of the air filter element 58 Pass the side of a, return to the case side recess 1 1 1 as shown by the arrow ③, pass through the air passage hole 105 of the air filter element 58, and the inner surface of the air cleaner cover 57 as shown by the arrow ④. As shown in the arrow ⑤, the air flows through the filter 101 of the air filter element 58, flows through the air cleaner case 55 as shown by the arrow 、, and attaches the tube. Connectin installed in holes 1 1 5 From the air tube to the air cleaner 27.

FIG. 12 is a cross-sectional view taken along line 12-2 of FIG. 5, and the configuration of each part will be described once. The opening 81 of the air cleaner cover 5 7 and the recess 9 2 on the cover side, the recess 1 1 1 on the case of the air cleaner 5 5, and the air passage hole 10 5 of the air filter element 58 are It constitutes the left intake duct 1 2 1.

Also, the opening 82 of the air cleaner cover 57 (see FIG. 6) and the recess 93 of the cover side (see FIG. 6), the case-side recess 1 1 2 of the air cleaner case 55 (see FIG. 8), and the air The air passage hole 106 (see FIG. 7) of the filter element 58 (see FIG. 7) constitutes the right intake duct 122 (see FIG. 11).

The cylindrical portion 94 of the air cleaner cover 57 is a portion that presses the frame 102 of the air filter element 58 at the tip.

Reference numeral 124 denotes an L-shaped wall having an L-shaped cross section provided on the outer surface of the air cleaner cover 57, and reference numeral 125 denotes a dirty side of the air cleaner 27 (that is, a room through which air before purifying flows). Reference numeral 126 denotes a clean side of the air cleaner 27 (that is, a room through which the purified air flows).

Next, the operation of each part will be described with reference to FIGS.

First, the air flow will be explained, following Fig. 11. The numbers attached to the arrows in the figure correspond to the numbers in Fig. 11.

First, as shown by the arrow ①, the air that has entered the air cleaner through the opening 8 1 meanders in the left intake duct 1 2 1 in an S-shape as shown by arrows ② and ③, and as shown by arrow ④. Make a U-turn while descending along the inner surface of the air cleaner cover 5 7, pass through the filter 101 of the air filter element 58 as shown by the arrow 、, and pass the air cleaner case 5 5 as shown by the arrow ⑥. Through the inside of the connecting tube 72 as shown by the arrow ⑦ and discharged outside the air cleaner 27.

When the air flows through the above-mentioned route, moisture (including dust and dirt) in the air falls in the air cleaner cover 57 as shown by the arrow ⑧ in the dust side 125. Flows out of the first drain pipe 96 provided at the lower end of the air cleaner, and at the clean side 126, falls inside the air cleaner case 55 as shown by the arrow ⑨ and the second drain provided at the lower end. It flows out of the pipe 1 17. Next, the upright wall 83 and the L-shaped wall 124 of the opening 81 will be described.

By providing the upright wall 83 at the opening 81 of the air cleaner cover 57, when the rainwater 128 falls from above, the rainwater 128 directly passes through the opening 81 to the left intake duct. The rainwater 1 28 can flow along the outer surface of the air cleaner case 55.

Also, if rainwater 13 1 flows from the front of the vehicle along the upper surface of the air cleaner cover 57 while running, the rainwater 13 1 1 is prevented by the L-shaped wall 1 2 4 provided on the air cleaner cover 57. And it can be prevented from flowing to the opening 81 side. Therefore, both of the upright wall 83 and the L-shaped wall 124 can reliably prevent rainwater from entering the air cleaner 27.

As described above with reference to FIGS. 1 and 5, the present invention firstly extends the main frame 11 from the head pipe 15 to the rear downward, and the engine 21 In a motorcycle 10 in which an air cleaner 27 is disposed above the engine 21, a pair of left and right intake ducts 121, 122 of the air cleaner 27 is provided above the air cleaner 27. When viewed from the rear of the vehicle body 27, the left and right intake ducts 12 1 and 12 2 are tilted so as to be substantially V-shaped across the main frame 11.

The height of the air cleaner 27 can be reduced by inclining the left and right intake ducts 12 1 and 12 2 so that the air cleaner 27 looks like a V when viewed from the rear of the vehicle. The size of the air cleaner 27 can be reduced.

Therefore, the air cleaner 27 can be easily assembled between the main frame 11 and the engine 21 via, for example, the connecting tube (see FIG. 12) to the breaker 52 (see FIG. 2). Also, the degree of freedom in arranging the air cleaner 27 on the vehicle body can be increased, and the air cleaner 27 can be arranged without interference with other parts. Furthermore, the storage space before assembly to the vehicle body can be reduced, and handling during transportation can be facilitated.

Furthermore, as the height of the air cleaner 27 is reduced, the height of the vehicle body cover, for example, the reed shield 33 disposed above the air cleaner 27 can be reduced, thereby improving the occupant's ease of getting on and off. Can be done. Secondly, as described with reference to FIGS. 11 and 12, the present invention is configured such that the intake ducts 121, 122 are provided on the case side recesses 111, 112 provided in the air cleaner case 55. Align the air cleaner cover 57 with the air cleaner case 55 with the cover side recesses 92, 93 provided on the air cleaner cover 57 covering the opening 56 of the air cleaner case 55 shifted. Thus, it is characterized in that it has an S-shaped cross section.

For example, the number of parts can be reduced as compared with the case where the intake duct is separated from the air cleaner case and the air cleaner cover, and the man-hour for assembling the intake ducts 121 and 122 can be reduced. . Therefore, the manufacturing cost of the air cleaner 27 can be reduced.

Also, for example, when the intake duct is integrated with the air cleaner case or air cleaner cover, the part that becomes the hole of the intake duct must be formed in the mold of the air cleaner case or air cleaner cover. However, the shape of the mold becomes complicated, but in the present invention, it is only necessary to mold the convex portions serving as the intake ducts 121 and 122 on the molds of the air cleaner case 55 and the air cleaner cover 57, respectively. The shape of the mold can be simplified, and the cost of the mold can be reduced.

Furthermore, by forming the intake ducts 121 and 122 in an S-shaped cross section, the length of the intake ducts 121 and 122 can be lengthened, and the engine 21 (see FIG. 1) can be made longer. Reduces intake noise.

Thirdly, as described with reference to FIGS. 4 and 12, the present invention extends the air cleaner cover 57 above the air cleaner case 55 to form extensions 77, 78. The opening portions 81, 82 of the intake ducts 121, 122 are formed substantially diagonally in the extension portions 77, 78.

The openings 81, 82 of the intake ducts 121, 122 are formed almost diagonally to the extensions 77, 78, so that they can be connected to, for example, a calibrator 52 (see Fig. 2). If the connecting tubes 72 are provided in the air cleaner case 55, the length of the left and right intake ducts 121, 122 can be increased from the air cleaner cover 57 to the air cleaner case 55 side. Thus, the intake duct length can be easily adjusted to reduce intake noise.

In addition, the extension parts 7 7 and 7 8 can block rainwater, etc., flowing from the front of the vehicle body. In addition, it is possible to prevent water from penetrating into the openings 81, 82, thereby improving the waterproofness, and to reinforce the openings 81, 82 with the extension portions 77, 78.

Further, by providing the openings 81, 82 almost diagonally in the extension portions 77, 78, the extension portions 77, 78 can be reduced in size while securing a predetermined opening area of the openings 81, 82. Can be.

Fourth, as described with reference to FIG. 5, in the present invention, the intake ducts 121, 122 are formed below the attachment portions 119, 120 of the air cleaner 27 to the main frame 11. It is characterized by the following.

Since the intake ducts 121, 122 do not protrude above the mounting parts 1 19, 120, parts such as the vehicle body cover (here, the reject shield 33) to be attached to the main frame 11 are the intake ducts. Interference with 1 2 1 and 1 22 can be prevented.

Fifthly, as described in FIGS. 4, 5 and 12, the upright walls 83, 82 are provided at the edges of the openings 81, 82 of the left and right intake ducts 121, 122, respectively. 84 is provided to prevent rainwater from entering the left and right intake ducts 122,122.

The left and right intake ducts 12 1, 122 The openings 81, 82 at the openings 81, 82 can prevent rainwater from entering the intake ducts 12 1, 122 by the upright walls 83, 84. With a simple structure in which the upright walls 83 and 84 are integrally formed with the air cleaner cover 57, the replacement time of the air filter element 58 in the air cleaner 27 can be extended further.

In the present invention, the intake ducts are inclined so that the left and right intake ducts are substantially V-shaped when viewed from the rear of the vehicle body. However, the opening of the intake duct and the upright wall of this opening are further formed. The vehicle body may be inclined obliquely downward and rearward. Industrial applicability

In the present invention, a pair of left and right intake ducts of the air cleaner are provided on the upper part of the air cleaner, and the intake duct is inclined so as to be substantially V-shaped when the air cleaner is viewed from the rear of the vehicle body. . Therefore, the height of the air cleaner can be reduced, and the size of the air cleaner can be reduced. Therefore, the body of the air cleaner Can be easily assembled, increasing the degree of freedom of arrangement.Moreover, it is possible to secure a storage place before assembling and easy handling during transportation, and to increase the height of the body cover located above. It can be lowered to improve the occupant's getting on and off, and is useful for motorcycles

Claims

The scope of the claims

1. In a motorcycle in which a main frame extends rearward and downward from a head pipe, an engine is mounted on a lower portion of the main frame, and an air cleaner is disposed above the engine, an air duct of the air cleaner is removed by an air cleaner. A pair of left and right is provided at the top of the air cleaner, and when the air cleaner is viewed from the

An air cleaner structure for a motorcycle, wherein the intake duct is inclined so as to form a V-shape.

2. The cross section S is adjusted by aligning the air cleaner cover with the air cleaner case with the recess provided in the air cleaner case shifted from the recess provided in the air cleaner cover covering the opening of the air cleaner case. The air cleaner structure for a motorcycle according to claim 1, wherein the air cleaner structure is formed in a letter shape.

3. The air cleaner cover is extended upward from the air cleaner case to form an extension, and the opening of the intake duct is formed substantially diagonally in the extension. The motorcycle air cleaner structure according to range 2.

4. The air cleaner structure for a motorcycle according to claim 1, wherein the intake duct is formed below a mounting portion of the air cleaner to the main frame.

5. The motorcycle eclipse according to claim 3 or 4, wherein an upright wall is provided at an edge of an opening of the intake duct to prevent rainwater from entering the intake duct. One-piece structure.