JP2700558B2 - Body structure of motorcycle - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a vehicle body structure of a motorcycle including an air cleaner and a side cover.

(Prior Art) Conventionally, there is a motorcycle configured as follows.

That is, the body frame of the motorcycle has a pair of left and right seat rails extending rearward in the rear portion. A rear wheel is disposed below these seat rails so as to be vertically swingable, and an engine for driving the rear wheel is provided.

An air cleaner for filtering and supplying outside air to the engine is provided, and a cleaner case of the air cleaner is disposed above and in front of the rear wheel. An upper surface plate of the cleaner case allows the outside air to flow into the cleaner case. An outside air inlet is provided. The outside air inlet is provided so as to overlap the seat rail in a side view, and the outside air inlet is provided between the left and right seat rails.

Further, a side cover is provided to cover the seat rail and the cleaner case from the outside, and at least a part of the side cover is bulged outwardly to form a bulged portion.

Then, when the engine is driven, outside air is absorbed into the cleaner case through the outside air inlet, filtered there, and then supplied to the engine to be subjected to fuel combustion, whereby The engine outputs power, and the power is transmitted to the rear wheels, so that the motorcycle can travel on a road surface.

(Problems to be solved by the invention) However, the above-described conventional technology has the following problems.

(1) When the motorcycle is running, foreign matter such as pebbles and mud rolled up by the rear wheel may jump upward through the space between the cleaner case and the side cover. May jump into the outside air inlet.

Therefore, a vertically extending wall which is integrally protruded from the rear portion of the cleaner case toward the side cover and extends vertically up and down in a side view is provided behind the outside air inlet,
It is conceivable that the vertical wall prevents the foreign matter from going to the outside air inlet.

However, simply providing such vertical walls requires relative dimensional accuracy between the protruding ends of these vertical walls and the inner surface of the side cover, which are related to each other. Dimensional accuracy and mutual assembling accuracy are required for the cleaner case in which the vertical wall is integrally molded and the side cover, and these molding and assembling operations may be complicated.

(2) Therefore, it is conceivable to provide a gap between the protruding end of the vertical wall and the inner surface of the side cover, and to absorb the above-mentioned errors by the gap.

However, if the gap is simply provided, there is a possibility that foreign matter jumped up by the rear wheel passes through the gap and heads toward the outside air inlet.

(3) In addition, the cleaner case emits intake noise when the engine is driven, and it is desired to reduce the intake noise with a simple configuration.

(Object of the Invention) The present invention has been made in view of the above-described circumstances, and a foreign object jumped up by a rear wheel while a motorcycle is running is located between a cleaner case of an air cleaner and a side cover. Through the air cleaner to prevent it from jumping into the outside air inlet of the air cleaner, to facilitate the molding and assembly of the cleaner case and the side cover, and to be emitted from the cleaner case. An object is to reduce intake noise with a simple configuration.

(Structure of the Invention) A feature of the present invention for achieving the above object is that the vehicle body frame 2 has a pair of left and right seat rails 11, 11 extending in the front-rear direction at a rear portion thereof. The rear wheel 18 is disposed so as to be able to swing up and down below, an engine 21 for driving the rear wheel 18 is provided, and an air cleaner 23 for filtering and supplying outside air to the engine 21 is provided. The air cleaner above the front of the wheel 18
23 cleaner cases 36 are arranged, and this cleaner case 36
An upper surface plate 37 is provided with an outside air inlet 39 for allowing the outside air to flow into the cleaner case 36, and the outside air inlet 39
And the outside air inlet 39 is disposed between the left and right seat rails 11 and 11 to cover the seat rail 11 and the cleaner case 36 from outside. In a motorcycle body structure in which a cover 56 is provided and at least a part of the side cover 56 is bulged outwardly to form a bulged portion 59, the side cover 56 extends from the rear of the cleaner case 36.
A vertical wall 64 integrally protruding toward the front and extending vertically upward and downward in a side view is provided behind the outside air inlet 39, and a protruding end 65 of the vertical wall 64 is formed by bulging the side cover 56. And a gap 63 is provided between the inner surface of the bulging portion 59 and the protruding end 65 of the vertical wall 64, and extends from the inner surface of the side cover 56 in the vehicle width direction. A projecting piece 66 protruding inward is formed, and this projecting piece 66 is located near the rear of the projecting end 65 of the vertical wall 64, and the vertical wall
Another gap 67 is provided between the protruding end 65 of the side cover 64 and the protruding piece 66 of the side cover 56 so that the protruding end 65 and the protruding piece 66 are overlapped in the front-rear direction. 56, the outer surface of the seat rail 11, the outer surface of the cleaner case 36, the inner surface of the bulging portion 59 of the side cover 56, and the vertical wall.
A recovery tank (vehicle equipment) 69 is housed in a space 68 surrounded by the front surface of the cleaner case 64, and an extension wall 36 a is integrally provided to extend downward from at least a part of the rear part of the cleaner case 36 and then downward. ,
At least a portion of the vertical wall 64 is integrally protruded outward from the extension end of the extension wall 36a, and the rear wheel 18
The extended wall 36a is larger than the outer surface of the radially outer end in
Is located at the outer side of the extension end.

(Operation) The operation of the above configuration is as follows.

(1) When the foreign matter 70 such as pebbles wound by the rear wheel 18 is jumped upward and forward through the space between the cleaner case 36 of the air cleaner 23 and the side cover 56 while the motorcycle 1 is traveling. The foreign matter 70 collides with the vertical wall 64 protruding from the cleaner case 36 toward the inner surface of the side cover 56 behind the outside air inlet 39, and is prevented from further jumping forward and upward. Therefore, the foreign matter 70 is prevented from jumping into the outside air inlet 39.

Moreover, since the gap 63 is provided between the inner surface of the bulging portion 59 of the side cover 56 and the protruding end 65 of the vertical wall 64,
A cleaner case 36 integrally formed with the vertical wall 64,
Each side cover 56 has some dimensional error,
And / or even if there are some assembly errors in both 36 and 56, these errors are absorbed by gap 63 described above.

(2) Further, a projecting piece 66 projecting inward in the vehicle width direction from the inner surface of the side cover 56 is formed.
Is positioned in the vicinity of the rear end of the projecting end 65 of the vertical wall 64, and another gap 67 is provided between the projecting end 65 of the vertical wall 64 and the projecting piece 66 of the side cover 65 so that these projecting ends 65 The protruding piece 66 is overlapped in the front-rear direction.

Therefore, the gap 63 between the inner surface of the side cover 56 and the protruding end 65 of the vertical wall 64 is closed by the protruding piece 66 of the side cover 56 from behind.

Further, as described above, since another gap 67 is provided between the protruding end 65 of the vertical wall 64 and the protruding piece 66 of the side cover 56, similar to the action of the gap 63, the other gap 67 is provided.
Thereby, errors in the cleaner case 36 and the side cover 56 are absorbed.

The gaps 63 and 67 allow the rear of the cleaner case 36 to communicate with the outside air inlet 39 side.
Since the laminations 63 and 67 form a labyrinth-like passage in a plan view, it is possible to reliably prevent the foreign matter 70 from jumping upward and forward and passing through the gaps 63 and 67.

Moreover, the overlapping portion of the projecting end 65 and the projecting piece 66 is located near the inner surface of the side cover 56,
In other words, the gaps 63 and 67 are further away from the rear wheel 18 located at the center of the vehicle body in the vehicle width direction.

Therefore, the foreign matter 70 that has been jumped upward and forward is prevented from being directed to the gaps 63 and 67 in advance.

(3) A recovery tank (body equipment) is provided in a space 68 surrounded by the seat rail 11, the outer surface of the cleaner case 36, the inner surface of the bulging portion 59 of the side cover 56, and the front surface of the vertical wall 64. ) 69 is stored.

Therefore, the space 68 is effectively used for storing a recovery tank (vehicle equipment) 69.

Even if the foreign matter 70 jumps into the space 63 through the gaps 63 and 67, the overlapping portion formed by the protruding end 65 and the protruding piece 66 forming the gaps 63 and 67 is the same as described above. As described above, since it is located near the inner surface of the side cover 56 and is separated outward from the outside air inlet 39, the foreign matter 70 that has jumped into the space 68 through the gaps 63 and 67 is not covered by the outside air inlet. Reaching 39 is prevented.

Further, since the seat rail 11 exists between the outside air inlet 39 and the space 68 and the recovery tank (body equipment) 69 is housed in the space 68, as described above, Even if the foreign matter 70 jumps into the space 68 through the gaps 63 and 67, the foreign matter 70 is prevented from going to the outside air inlet 39 by the seat rail 11 and the recovery tank (body equipment) 69. As a result, it is prevented that the air reaches the outside air inlet 39.

Further, the cleaner case 36 emits intake noise when the engine 21 is driven, which may cause discomfort to a third party located outside the motorcycle 1 at a distance.

However, the space 68 outside the cleaner case 36
Since a recovery tank (vehicle equipment) 69 is stored in the, the recovery tank (vehicle equipment) 69 functions as a shield for the intake noise.

(4) An extension wall integrally extending downward from at least a portion of the rear portion of the cleaner case 36.
36a is provided, and at least a part of the vertical wall 64 is integrally protruded outward from the extension end of the extension wall 36a,
The extension end of the extension wall 36a is located outside the outer surface of the radial outer end of the rear wheel 18.

This prevents the rear wheel 18 swinging up and down from interfering with the extension wall 36a. By providing the extension wall 36a, the rear portion of the space 68 is extended rearward and downward to increase, so that a large-sized recovery tank (vehicle equipment) 69 can be stored in the space 68. You can do it.

Further, as described above, the vertical wall 64 is formed integrally with the cleaner case 36, and the extension wall 36a is formed integrally with the cleaner case 36, and the vertical wall 64 is formed on the extension wall 36a. Since they are integrally formed, the vertical wall 64 and the extension wall 36a improve the rigidity of the cleaner case 36.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

In FIG. 2, 1 is a motorcycle, 2 is a body frame thereof, and the body frame 2 has a semi-double cradle shape. That is, the body frame 2 has a bed pipe 3 at a front portion thereof, a main frame 4 extends from the upper part of the head pipe 3 toward the rear lower part, and a pair of left and right seats extends from the rear end of the main frame 4. A pillar tube 6 extends downward.

On the other hand, a down tube 7 is provided which extends rearward and downward from a lower portion of the head pipe 3 and has a rear end connected to a lower end of the seat pillar tube 6. The down tube 7 includes a front tube 8 extending rearward and downward from a lower portion of the head pipe 3, and a pair of left and right rear tubes that extend downward from the lower end of the front tube 8 and then bend rearward. It is composed of 9,9.

The body frame 2 has a pair of left and right seat rails 11, 11 extending in the front-rear direction at the rear portion. These seat rails 11 extend rearward from the rear end of the main frame 4. The rear portion of each of the seat rails 11 is supported at the lower portion of the seat pillar tube 6 by a pair of left and right back stays 12,12.

A front fork 13 is supported on the head pipe 3 so as to be steerable. The front fork 13 supports a front wheel 14 at a lower end thereof and a handle 15 at an upper end thereof.

On the other hand, a rear arm 17 is pivotally supported on the lower part of the seat pillar tube 6 so as to be vertically swingable, and a rear wheel 18 is supported on a swing end of the rear arm 17. The rear wheel 18 is disposed below the left and right seat rails 11 and 11 and is vertically swingable with the swing end of the rear arm 17.
19 is a shock absorber.

A two-cycle engine 21 for driving the rear wheel 18 is provided, and the engine 21 is fastened to the body frame 2. The engine 21 has an intake hole on the rear surface side, and a carburetor 22 is attached to the intake hole, and an air cleaner 23 is attached to the carburetor 22. on the other hand,
The engine 21 has an exhaust hole on the front side thereof. One end of an exhaust pipe 25 is connected to the exhaust hole, the other end of the exhaust pipe 25 extends rearward, and a silencer 26 is attached to the rear end. Have been.

A fuel tank 27 for supplying fuel to the carburetor 22 is provided. The fuel tank 27 has an inverted U shape when viewed from the front, and is supported by the body frame 2 so as to straddle the main frame 4. A seat 28 is provided behind the fuel tank 27, and the seat 28 is supported by the seat rail 11. 29 is a rider and 30 is a footrest.

The engine 21 is provided with a drive sheave 32, while the rear wheel 18 is provided with a driven sheave 33, and a transmission chain 34 is wound around the both sheaves 32,33.

When the engine 21 is driven, outside air is sucked into the engine 21 through the air cleaner 23 and the carburetor 22. In this case, the outside air is filtered by the air cleaner 23 and supplied to the engine 21. Further, when the outside air passes through the carburetor 22, fuel from the fuel tank 27 is supplied to the outside air to generate a mixture. This mixture is provided for combustion in the engine 21,
This engine 21 outputs power. When the power of the engine 21 is transmitted to the rear wheels 18 via the transmission chain 34 and the like, the rear wheels 18 can be driven, and the motorcycle 1
Traveling is possible.

A radiator 35 is provided on the front surface of the down tube 7. The radiator 35 cools the cooling water for cooling the engine 21 by the traveling wind.

The air cleaner 23 will be described with reference to FIGS. 1 to 4 and FIG.

The air cleaner 23 includes the seat pillar tube 6,
It is provided in a triangular space surrounded by the seat rail 11 and the back stay 12 in a side view.

The air cleaner 23 has a cleaner case 36 made of resin. The cleaner case 36 is disposed above and in front of the rear wheel 18. Further, a rubber outside air inflow pipe 38 is provided which penetrates vertically through a rear portion of the upper surface plate 37 of the cleaner case 36. The upper end of this outside air inflow pipe 38 is bent rearward, and this end inner hole serves as an outside air inlet 39,
It opens backwards.

The outside air inlet 39 is provided on the upper surface plate of the cleaner case 36.
The outside of 37 is communicated with the inside of the cleaner case 36, so that the outside air can flow into the cleaner case 36. The outside air inlet 39 is viewed from the side (FIG. 1).
The outside air inlet 39 is disposed between the left and right seat rails 11, 11.

On the other hand, a rubber air outlet pipe 41 projects forward from the front surface of the cleaner case 36, and the projected end thereof is connected to the suction port of the carburetor 22.

Inside the cleaner case 36, there is provided an element 42 for partitioning the outside air inlet pipe 38 side and the air outlet pipe 41 side. In addition, an opening is formed in the cleaner case 36 corresponding to the element 42, and a case cap 43 that closes the opening so that the opening can be opened and closed is provided. The case cap 43 is screwed to the cleaner case 36 with a bolt 44. I have. Then, if you open the case cap 43,
Through the above opening, the element inside the cleaner case 36
42 can be attached and detached.

When the outside air is sucked through the air cleaner 23 by the driving of the engine 21, the outside air passes through the outside air inlet 39, particularly as indicated by an arrow in FIG.
It is sucked into 36, which is filtered by the element 42 and sent to the carburetor 22 through the air outlet tube 41.

A column 46 is integrally formed on the upper surface plate 37 of the cleaner case 36 so as to protrude upward, and a cross member 47 is provided on the left and right seat rails 11 corresponding to the column 46. The column 46 is screwed to the cross member 47 by a bolt 48, and the cleaner case 36 is locked to the vehicle body frame 2 by a plurality of grommets (not shown). Supported on the side.

A connecting piece 51 is integrally formed on the upper rear end face of the cleaner case 36. The connecting piece 51 projects rearward, and the front end of the rear fender 52 is joined to the lower surface of the connecting piece 51. Also, a mudguard 54 that blocks a space between the right side surface of the cleaner case 36 and the right seat rail 11 is provided.
Is provided. The left edge of this mudguard 54 is joined to the lower surface of the cleaner case 36, the front edge of the left edge of the mudguard 54 is screwed to the lower surface of the cleaner case 36, and its rear end is connected to the front end of the connecting piece 51 and the rear fender 52. It is sandwiched between. Also, mudguard 54
Has a right edge extending below the right seat rail 11.

A pair of left and right side covers 56, 56 extending downward from the left and right edges of the seat 28 are provided. The left side cover 56 covers the seat rail 11 and the cleaner case 36 of the air cleaner 23 from the outside in the vehicle width direction. The side cover 56 is made of resin, and a support piece 57 is integrally protruded from an upper end of a front and rear halfway portion thereof.
Screwed to 47.

In particular, as shown in FIGS. 3A and 4, at least a part of the side cover 56 in the vertical direction is largely bulged outward to form a bulged portion 59. ing.

Further, a tail cover 60 that covers the rear fender 52 is provided when the rear fender 52 is connected to the rear ends of the left and right side covers 56. The tail cover 60 is made of resin, and its front end is screwed to the rear end of the left and right side covers 56, 56 by bolts 61. A positioning protrusion 62 is provided at the rear end of each side cover 56 so as to project therefrom. The positioning protrusion 62 can be freely fitted into and removed from a fitting hole formed at the front end of the tail cover 60. That is, prior to screwing the front end of the tail cover 60 to the rear end of each side cover 56, if the fitting is performed, the relative positioning between the tail cover 60 and each side cover 56 can be performed. Has become.

Behind the outside air inlet 39, the cleaner case
A vertical wall 64 is integrally protruded from the rear end, which is the rear portion of the 36, and the connection piece 51 toward the side cover 56 on the left side. The vertical wall 64 extends vertically long in a side view, and its protruding end 65 extends to near the inner surface of the left side cover 56.

3a and 4, the left side cover 56
A narrow gap 63 having a small width is provided between the inner surface of the bulging portion 59 and the protruding end 65 of the vertical wall 64.

A protruding piece 66 is formed to protrude inward in the vehicle width direction from the inner surface of the left side cover 56 described above. More specifically, the protruding piece 66 protrudes inward in the vehicle width direction from the rear end of the side cover 56. The projecting piece 66 is located near the rear of the projecting end 65 of the vertical wall 64, and the projecting end 65 of the vertical wall 64 and the side cover
Another gap 67 having a small width is provided between the projection piece 66 and the projection piece 66.

The protruding end 65 and the protruding piece 66 are superposed before and after, and the superposed portion is located near the inner surface of the side cover 56.

In all the drawings, a space 68 surrounded by the seat rail 11, the outer surface on the left side of the cleaner case 36, the inner surface of the bulging portion 59 of the side cover 56, and the front surface of the vertical wall 64 is a recovery device serving as vehicle body equipment. A space for storing the tank 69 is provided, and the recovery tank 69 is stored in the space 68. The recovery tank 69 is for temporarily storing the cooling water for the radiator 35.

In FIGS. 1a, 3a, and 4, an extension wall 36a is integrally extended downward from the rear lower end, which is at least a part of the rear part of the cleaner case 36, to the rear. In order to facilitate the understanding of the drawings, the extension wall 36a is shown in a satin pattern.

A lower part, which is at least a part of the vertical wall 64, is integrally protruded from the extension end of the extension wall 36a toward the outside on the left side.

In particular, in FIG. 4, in the vehicle width direction, the extension wall 36a
The extended end of the rear wheel 18 is located outside the outer surface of the radially outer end (tire portion) of the rear wheel 18.

In FIG. 1, when the motorcycle 1 runs, the rear wheel 18 rotates in the direction of arrow R in the figure. And this rear wheel
It is assumed that foreign matter 70 such as pebbles wound by 18 is flipped forward and upward behind the air cleaner 23 as shown by an arrow A in the same figure. Then, this foreign substance 70 is a vertical wall
Therefore, the foreign matter 70 is prevented from jumping into the outside air inlet 39.

Further, since the protruding piece 66 of the side cover 56 and the protruding end 65 of the vertical wall 64 are overlapped in front and back, the gap 63
Is closed by the protruding piece 66 from behind. Therefore, as described above, the foreign matter 70 jumped upward and forward collides with the vertical wall 64 and the protruding piece 66 as shown by the arrow A in FIG. Is prevented. Therefore, the recovery tank 69 stored in the space 68 is reliably protected.

In addition, since the space 68 has a structure in which the vertical wall 64 and the protruding piece 66 are closed from the outside of the vehicle as described above, it is also effective that the recovery tank 69 is misplaced from the outside of the vehicle. Is prevented.

The side cover 56 is made of resin and does not have sufficient rigidity. Because of this, this side cover
When an external force is applied to the outer surface side of 56, it is relatively easily bent inward in the vehicle width direction. However, the side cover 56 abuts on the protruding end 65 of the vertical wall 64 and is prevented from bending further. In other words, the vertical wall 64
Serves also as a reinforcing material for the side cover 56.

In FIGS. 1, 3, 5, and 6, the cleaner case 36 has a structure for supporting the battery 71. That is, the recess 72 is formed in the upper plate 37 of the cleaner case 36.
Are formed, and the battery 71 is fitted into the recess 72. A hook 7 is provided before and after the opening edge of the recess 72, respectively.
3,73 are protruding. The upper surface of the battery 71 is elastically pressed by the rubber band 73 which is engaged and disengaged by the hooks 73, 73.
Are supported in the recess 72.

The bottom plate 76 of the recess 72 has a drain groove 77 having a U-shaped cross section.
Are formed. This extends in the vehicle width direction, and the right end thereof is a drain port 78, and is opened toward the right side of the cleaner case 36. When rainwater enters the recess 72, the water is distributed to the outside of the cleaner case 36 through the drain groove 77 and the drain port 78 as shown by the arrow in FIG. 79 is a rib.

1, 3, and 6, the upper plate
37 has the shape of falling forward. Because of this, the recess
When rainwater falls on the upper surface plate 37 behind the 72, the rainwater tries to flow into the recess 72. Therefore, drainage means for preventing this is provided.

That is, a pair of left and right ribs 81, 81 are integrally provided on the upper surface plate 37, and extend in the front-rear direction. Also,
The front end of the right rib 81 of the ribs 81
It is connected in one. Further, a water entry prevention wall 82 extends from the support column 46 toward the front end of the left rib 81, and the water entry prevention wall 82 is also integrally formed with the upper surface plate 37.

On the other hand, a drain groove 83 is formed in the upper surface plate 37 along the front surface of the water entry prevention wall 82. The drain groove 83 has a downward-sloping shape, and the right end thereof is open toward the right side of the cleaner case 36. The upper surface of the upper plate 37 surrounded by the left and right ribs 81, 81 and the water entry prevention wall 82 passes through the space between the front end of the left rib 81 and the left end of the water entry prevention wall 82, and
Is in communication with

Therefore, when rainwater flows forward on the upper surface plate 37, the rainwater is drained particularly by the left and right ribs 81, 81 and the water entry prevention wall 82 as shown by arrows in FIGS. The water is guided to 83 and drained to the right outside of the cleaner case 36 through the drain groove 83.

The ribs 81 and the water entry prevention wall 82 also serve as reinforcing members for the cleaner case 36 and the support columns 46.

 In addition, 85 is an oil tank.

(Effects of the Invention) According to the present invention, the following effects are produced.

(1) An engine for driving a rear wheel having a pair of left and right seat rails extending rearward and rearward at a rear portion thereof, arranged below the seat rails so that a rear wheel can swing up and down. And an air cleaner for filtering and supplying outside air to the engine, a cleaner case for the air cleaner is provided above and in front of the rear wheel, and the outside air is supplied to the upper surface plate of the cleaner case in the cleaner case. In addition to providing an outside air inlet for inflow,
The outside air inlet is overlapped with the seat rail in a side view, and the outside air inlet is arranged between the left and right seat rails, and a side cover is provided to cover the seat rail and the cleaner case from outside. In a motorcycle body structure in which at least a part of the side cover is bulged outwardly to form a bulged portion, the motorcycle integrally projects from a rear portion of the cleaner case toward the side cover and is viewed from a side. A vertically extending wall extending vertically up and down is provided behind the outside air inlet, and a protruding end of the vertical wall extends to near the inner surface of the bulging portion of the side cover, and A gap is provided between the inner surface and the protruding end of the vertical wall.

Therefore, when foreign matter such as pebbles rolled up by the rear wheel while the motorcycle is running is jumped forward and upward through the space between the cleaner case and the side cover, the foreign matter collides with the vertical wall. Then, it is prevented from being further jumped forward and upward. Therefore, the foreign matter is prevented from jumping into the outside air inlet.

In addition, since a gap is provided between the inner surface of the bulging portion of the side cover and the protruding end of the vertical wall, the cleaner case integrally formed with the vertical wall and the side cover have some dimensions. If there are errors and / or both have some assembly errors,
These errors are absorbed by the gap.

Therefore, the cleaner case and the side cover can be easily formed by the amount that a certain amount of error is allowed.
These assembling operations can also be easily performed.

(2) Further, a projecting piece projecting inward in the vehicle width direction from the inner surface of the side cover is formed, and the projecting piece is located near the rear of the projecting end of the vertical wall. Another gap is provided between the protruding end and the protruding piece of the side cover, and the protruding end and the protruding piece are overlapped in the front-rear direction.

Therefore, the gap between the inner surface of the side cover and the protruding end of the vertical wall is closed from behind by the protruding piece of the side cover.

Therefore, as described above, it is possible to more reliably prevent the foreign matter jumped upward and forward from passing through the gap and jumping into the outside air inlet.

In addition, as described above, since another gap is provided between the protruding end of the vertical wall and the protruding piece of the side cover, similar to the operation effect of the gap, a cleaner case and a side The error of the cover is absorbed, so that the cleaner case and the side cover can be easily formed, and the assembling work thereof can also be easily performed.

The two gaps communicate the rear side of the cleaner case with the outside air inlet side.However, the two gaps form a labyrinth-like passage that is bent in a plan view, and thus are flipped forward and upward. The foreign matter passing through the gaps is reliably suppressed.

Therefore, as described above, while the cleaner case and the side cover can be easily formed, it is possible to more reliably prevent the foreign matter from jumping into the outside air inlet.

Moreover, the overlapping portion of the protruding end and the protruding piece is located near the inner surface of the side cover, that is, the gaps are further outwardly away from the rear wheel located at the center of the vehicle body in the vehicle width direction. Have been.

Therefore, the foreign matter that has been jumped upward and forward is prevented from going to the gaps in advance, so that the foreign matter is more reliably prevented from jumping into the outside air inlet.

(3) Further, vehicle body accessories are stored in a space surrounded by the seat rail, the outer surface of the cleaner case, the inner surface of the bulging portion of the side cover, and the front surface of the vertical wall.

Therefore, the space is effectively used for storing vehicle body accessories.

Even if the foreign matter jumps into the space through the gaps, the overlapping portion formed by the projecting end and the projecting piece forming the gaps is located near the inner surface of the side cover as described above. Further, since it is distant outward from the outside air inlet, it is possible to prevent foreign matter jumping into the space through the gaps from reaching the outside air inlet.

In addition, since the seat rail exists between the inlet / outlet air inlet and the air, and the vehicle body accessories are stored in the space, as described above, foreign matter passes through both gaps and enters the space. Even if it jumps in, the foreign matter is prevented from going to the outside air inlet by the seat rails and vehicle body accessories, and is prevented from reaching the outside air inlet.

Therefore, even if the foreign matter jumps into the space through the gaps, the foreign matter is reliably prevented from jumping into the outside air inlet.

As described above, since the outside air inlet is disposed between the left and right seat rails, the vehicle body accessories are not disposed near the outside air inlet, and do not hinder outside air from flowing into the air cleaner. Therefore, the outside air is smoothly sucked into the cleaner case through the outside air inlet.

In addition, the cleaner case emits intake noise when the engine is driven, which may cause discomfort to a third party located outside the motorcycle.

However, since the vehicle body accessories are stored in the space outside the cleaner case, the vehicle body accessories function as a shield for the intake noise.

Therefore, with a simple configuration using the vehicle body accessories, the intake noise that is directed outward from the cleaner case can be reduced.

(4) An extension wall is provided which extends integrally from at least a part of a rear portion of the cleaner case and then downwards, and at least one of the vertical walls extends outward from an extension end of the extension wall. A part thereof is integrally protruded, and an extending end of the extension wall is located outside of an outer surface of a radially outer end of the rear wheel.

This prevents the rear wheel that swings up and down from interfering with the extension wall. By providing the extension wall, the rear portion of the space is extended rearward and downward to increase, so that a large-sized vehicle body accessory can be stored in this space.

Further, as described above, the vertical wall is formed integrally with the cleaner case, and the extension wall is formed integrally with the cleaner case, and the vertical wall is formed integrally with the extension wall. The vertical wall and the extension wall improve the rigidity of the cleaner case.

Accordingly, the cleaner case emits intake noise when the engine is driven. The intake noise can be reduced by a simple configuration in which the rigidity of the cleaner case is improved by the vertical wall and the extension wall.

[Brief description of the drawings]

1 shows an embodiment of the present invention. FIG. 1 is a partially enlarged sectional view of FIG. 2, FIG. 1a is a partially detailed view of FIG. 1, FIG. 2 is an overall side view of a motorcycle, and FIG. 1 is a plan view, FIG. 3a is a partial detailed view of FIG. 3, FIG. 4 is a sectional view taken along the line IV-IV of FIG. 1, and FIG. 5 is a sectional view taken along the line VV of FIG. FIG. 6 is a sectional view of the air cleaner. 1 ... motorcycle, 2 ... body frame, 11 ... seat rail, 18 ... rear wheel, 21 ... engine, 23 ... air cleaner, 36 ... cleaner case, 36a ... extension wall, 37 ...
Top plate, 39 ... External air inlet, 56 ... Side cover, 59 ...
... bulge, 63 ... gap, 64 ... vertical wall, 65 ... protruding end, 66 ... protruding, 67 ... other gap, 68 ... space, 69 ...
Recovery tank (vehicle equipment), 70 ... Foreign matter.

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-57-47267 (JP, A) JP-A-62-134386 (JP, A) JP-A-55-140668 (JP, A) 12490 (JP, U) Japanese Utility Model Showa 60-145932 (JP, U) Japanese Utility Model Utility Model Showa 61-71589 (JP, U)

Claims (1)

(57) [Claims] A vehicle body frame has a pair of left and right seat rails extending rearward in a rear portion thereof, and a rear wheel is disposed below these seat rails so as to be swingable up and down, and the rear wheels are driven. And an air cleaner for filtering and supplying outside air to the engine, a cleaner case for the air cleaner is provided above and in front of the rear wheel, and the cleaner case is provided on an upper plate of the cleaner case. An outside air inlet for inflow into the inside, the outside air inlet overlaps with the seat rail in a side view, and the outside air inlet is disposed between the left and right seat rails, and the seat rail and the cleaner case are provided. And a side cover that covers from the outside, and at least a part of the side cover is bulged outward to form a bulged portion. In the vehicle body structure of a wheeled vehicle, a vertical wall integrally projecting from a rear portion of the cleaner case toward the side cover and extending vertically up and down in a side view is provided behind the outside air inlet, and The projecting end of the wall is extended to near the inner surface of the bulging portion of the side cover, and a gap is provided between the inner surface of the bulging portion and the projecting end of the vertical wall. A protruding piece protruding inward in the vehicle width direction is formed from the protruding end of the vertical wall, and the protruding piece is positioned near the rear end of the protruding end of the vertical wall. Another protruding end and the protruding piece are overlapped in the front-rear direction by providing another gap therebetween, and the overlapped portion is located near the inner surface of the side cover, and the seat rail, the outer surface of the cleaner case, Side hippo The vehicle body accessories are housed in a space surrounded by the inner surface of the bulging portion and the front surface of the vertical wall, and an extension wall integrally extending downward from at least a part of a rear portion of the cleaner case. At least a part of the vertical wall is integrally protruded outward from the extended end of the extended wall, and the extension of the extended wall is larger than the outer surface of the radially outer end of the rear wheel. The body structure of a motorcycle with the outboard end positioned outside.