JP5852071B2 - Air intake structure for saddle-ride type vehicles - Google Patents

Description

  The present invention relates to an intake structure for a saddle-ride type vehicle in which an air cleaner is disposed below tank members disposed above left and right main frames.

  A straddle-type vehicle such as a motorcycle is known in which an air cleaner is disposed below a fuel tank disposed above the left and right main frames. In this type of vehicle, at least a part of the air cleaner is disposed between the left and right frames, and the elements are disposed so as to partition the interior of the air cleaner case vertically (see, for example, Patent Document 1).

JP 2009-83810 A

However, in the conventional configuration, the element cannot be accessed unless the fuel tank is removed, and work such as element replacement becomes complicated. In addition, the conventional configuration also requires a structure in which the fuel tank can be easily attached and detached.
The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a motorcycle intake structure capable of maintaining an element without removing a tank member such as a fuel tank while securing a capacity of an air cleaner. It is said.

In order to solve the above-described problem, the present invention provides an intake structure for a saddle-ride type vehicle in which an air cleaner (41) is disposed below a tank member (21) disposed above the left and right main frames (13). The tank member (21) is formed in a bowl shape that covers the left and right main frames (13) from the upper side to the side, and the air cleaner (41) is disposed between the main frames (13). (101) and a sub chamber (102) disposed on the outer side in the vehicle width direction of the main frame (13). In the sub chamber (102), an element (44) is disposed, and the element An element lid (43) that covers (44) from the outside in the vehicle width direction is fastened, and the rear portion (102R) of the sub chamber (102) and the rear portion of the element (44) The sub-chamber (102) is located in a gap (S1) formed between the outer wall surface (13M) of the main frame (13) and the inner wall surface (21M) of the tank member (21). The front side portion (102F) and the front side portion of the element (44) are positioned in front of the vehicle body with respect to the gap (S1), protrude forward of the tank member (21) in a side view of the vehicle body, and the sub chamber The element lid (43) not fastened to (102) is slid along the inner wall surface (21M) of the tank member (21) so as to be freely inserted and removed from the gap (S1). The front part (102F) of the chamber (102) is provided with a fastening part (73) for fastening the element lid (43).

  According to this configuration, the space between the main frames can be secured using the space between the main frames, and the sub chambers can be secured using the gap formed between the outer wall surface of the main frame and the inner wall surface of the fuel tank. Capacity can be secured. Moreover, since the fastening part which fastens the element lid which covers an element from the vehicle width direction outer side is located ahead of a tank member by a vehicle body side view, an element lid can be removed without removing a tank member. Therefore, the element can be maintained without removing the tank member while securing the capacity of the air cleaner.

  In the above configuration, the element lid (43) has a claw portion (43T) protruding rearward, and the sub chamber (102) is formed in the rear portion (102R) located in the gap (S1). The claw portion (43T) may have a hole portion (42H) to be inserted and engaged from the front. According to this configuration, it is easy to secure the support strength of the element lid, and the element lid can be easily attached and detached by sliding in the front-rear direction.

  Moreover, in the said structure, it has the element fastening part (71) which fastens the said element (44) to the said sub chamber (102), and the said element fastening part (71) is rather than the said tank member (21). It may be provided in the front. According to this configuration, the element fastening portion can be accessed without removing the tank member, and element replacement can be easily performed.

  In the above configuration, the gap (S1) formed between the outer wall surface (13M) of the main frame (13) and the inner wall surface (21M) of the tank member (21) is wide toward the front. The element lid (43) is formed in a shape that expands in the vehicle width direction toward the front along the inner wall surface (21M) of the tank member (21). The intake duct (81) may be detachably attached in front of the tank member (21). According to this configuration, the sub chamber can be formed by utilizing the gap between the main frame and the tank member. Further, the element lid can be easily attached and detached along the inner wall surface of the fuel tank, and the intake duct can be attached and detached without removing the fuel tank.

  Further, in the above configuration, the sub chamber (102) has a resonator (62) on the downstream side of the element (44), and the resonator (62) is mounted on the element (44) in a side view of the vehicle body. It may be mounted in the element opening (46A). According to this configuration, if the element is removed, the resonator can be accessed without removing the fuel tank, and the maintenance work of the resonator can be easily performed.

  In the above configuration, the air cleaner (41) forms the main chamber (101) and extends from the main chamber (101) to the left and right to straddle the left and right main frames (13) from above. An air cleaner case (42) having (42X), the left and right straddle portions (42X) have an opening (42K) that opens to the outside in the vehicle width direction, and each element (42K) includes the element ( 44) and the element lid (43) may be fastened so as to close each opening (42K) to form a pair of left and right sub chambers (102). According to this configuration, the left and right sub chambers can be easily formed by directly fastening the element lid to the air cleaner case. Further, since it is not necessary to make the sub chamber and the main chamber in separate cases, the number of parts can be easily reduced.

  In the present invention, the tank member disposed above the left and right main frames is formed in a bowl shape that covers the left and right main frames from the upper side to the side, and the air cleaner disposed below the tank member includes the main frame. A main chamber disposed between the main chamber and a sub chamber disposed outside the main frame in the vehicle width direction, and the rear portion of the sub chamber and the rear portion of the element in the sub chamber are connected to the outer wall surface of the main frame and the fuel. The front portion of the sub chamber and the front portion of the element are positioned in front of the vehicle body with respect to the gap and in front of the tank member in a side view of the vehicle body. Since a fastening part for fastening an element lid that covers the element from the outside in the vehicle width direction is provided on the front side portion of the sub chamber, while securing the capacity of the air cleaner, Allowing maintenance elements without removing the link member.

  Further, the element lid has a claw portion protruding rearward, and the sub chamber has a hole portion in which the claw portion is inserted from the front and engaged with a rear portion located in the gap. In this case, it is easy to ensure the support strength of the element lid, and it is easy to attach and detach the element lid by sliding it in the front-rear direction.

  In addition, if the element fastening portion for fastening the element to the sub chamber is provided, and the element fastening portion is provided in front of the tank member, the element fastening portion without removing the tank member. Can be accessed, and element replacement can be easily performed.

  Further, a gap formed between the outer wall surface of the main frame and the inner wall surface of the tank member is formed in a V-shaped space that is widened forward, and the element lid is formed on the tank member. If the air intake duct is detachably attached to the front side of the tank member, the shape between the main frame and the tank member is increased. A sub chamber can be formed using the gap. Further, the element lid can be easily attached and detached along the inner wall surface of the fuel tank, and the intake duct can be attached and detached without removing the fuel tank.

  Also, it has a resonator on the downstream side of the element in the sub chamber, and if the resonator is installed in the opening for the element to which the element is mounted in a side view of the vehicle body, the fuel tank is removed if the element is removed. Therefore, the resonator can be accessed and maintenance work of the resonator can be easily performed.

  The air cleaner includes an air cleaner case that includes a left and right straddling portion that forms a main chamber and extends from the main chamber to the left and right and straddles the left and right main frames from above. The left and right straddling portions open outward in the vehicle width direction. If left and right sub-chambers are formed by having an opening, an element is disposed in each opening, and an element lid is fastened to close each opening to form a pair of left and right sub-chambers While being able to form, it becomes easy to reduce a number of parts.

1 is a view of a front portion of a motorcycle according to an embodiment of the present invention as viewed from the right side. It is the figure which showed the fuel tank of FIG. 1 with the dashed-two dotted line. It is the figure which looked at FIG. 2 from the vehicle body upper direction. It is the figure which showed the internal structure of the air cleaner from the upper direction. It is sectional drawing of the air cleaner of FIG. It is the figure which looked at the air cleaner with the surrounding structure from the right side.

  Embodiments of the present invention will be described below with reference to the drawings. In the description, descriptions of directions such as front and rear, right and left and up and down are the same as directions relative to the vehicle body unless otherwise specified. Further, in each figure, the symbol FR indicates the front of the vehicle body, the symbol UP indicates the upper side of the vehicle body, and the symbol LE indicates the left side of the vehicle body.

FIG. 1 is a view of a front portion of a motorcycle according to an embodiment of the present invention as viewed from the right side.
The body frame 11 of the motorcycle 10 has a pair of left and right main frames 13 extending rearwardly downward from the head pipe 12. A fuel tank (tank member) 21 is disposed above the main frame 13. The engine 31 is supported.
The head pipe 12 supports a pair of left and right front forks 16 via a pair of upper and lower bridge members (top bridge, bottom bridge) 14 and 15 so as to be rotatable left and right and also supports a handle 17. Thus, by operating the handle 17 left and right, the front wheels 50 supported by the lower ends of the left and right front forks 16 are steered left and right.

A pair of left and right pivot plates 18 are connected to the rear end portions of the left and right main frames 13, and a driver seated on an occupant seat 19 disposed behind the fuel tank 21 places his feet on the pivot plates 18. A pair of left and right steps (not shown) are attached.
A pair of left and right seat frames 20 extending rearwardly toward the rear of the vehicle body are connected to the pivot plate 18, and the passenger seat 19 is supported by the seat frame 20.

FIG. 2 is a diagram showing the fuel tank 21 of FIG. 1 by a two-dot chain line, and FIG. 3 is a diagram of FIG. 2 viewed from above the vehicle body.
As shown in FIGS. 2 and 3, the left and right main frames 13 include a main frame front portion 13 </ b> A that extends rearward from the head pipe 12 toward the outer side in the vehicle width direction in a plan view of the vehicle body (FIG. 3). A main frame rear portion 13B extending rearward from the rear end portion of the portion 13A toward the inner side in the vehicle width direction is integrally provided.
An air cleaner 41 is disposed on the left and right main frame front portions 13A from above. The fuel tank 21 is formed in a bowl-shaped tank that straddles the main frame front portion 13A and the main frame rear portion 13B from above, and covers the air cleaner 41 from above. That is, the air cleaner 41 is arranged using a space between the fuel tank 21 and the engine 31.

A throttle body (FIGS. 2 and 3) 51 is disposed between the air cleaner 41 and the engine 31. As shown in FIG. 2, the upper end portion of the throttle body 51 is connected to the rear lower portion of the upper air cleaner 41 via a connecting tube 52, and the lower end portion of the throttle body 51 is connected to the cylinder portion of the engine 31 via an insulator 53. 32. Thus, the intake path from the air cleaner 41 to the engine 31 can be formed as a path extending linearly downward, which is advantageous for improving the intake efficiency of the engine 31.
The engine 31 is formed as a parallel multi-cylinder engine (a two-cylinder engine in this embodiment) in which a cylinder portion 32 to which a throttle body 51 is connected is erected from the front upper part of a crankcase 33.

As shown in FIGS. 1 and 2, the fuel tank 21 is roughly arranged above the main frame front portion 13A and the main frame rear portion 13B, which covers the main frame front portion 13A from the upper side to the left and right sides. A tank rear portion 21B is provided integrally. The tank front portion 21A has a pair of left and right outer cover portions 21C that cover the outer sides of the left and right main frame front portions 13A. In FIG. 3, the outline of the outer cover portion 21C is indicated by a two-dot chain line.
With this tank arrangement structure, as shown in FIG. 3, there is a space between the inner wall surface 21C of the outer cover portion 21C (corresponding to the inner wall surface of the tank front portion 21A) and the outer wall surface 13M of the main frame front portion 13A. A V-shaped gap S1 that extends in the vehicle width direction is formed.

  Since the tank front portion 21A covers the main frame front portion 13A from the upper side to the left and right sides, the tank capacity can be increased. On the other hand, the tank rear portion 21B is formed within the width of the main frame rear portion 13B in a plan view of the vehicle body. Thereby, the driver | operator who seated on the passenger | crew seat 19 can straddle the fuel tank 21, and can improve the freedom degree of a driver | operator's movement.

The air cleaner 41 has a pair of left and right air cleaner cases 42 that form a main chamber 101 between the left and right main frame front portions 13A and a front left and right front portion of the air cleaner case 42 to form a sub chamber 102 in the vehicle body in plan view. Side cover (element lid) 43.
Here, the main chamber 101 is a space connected to the throttle body 51 on the engine 31 side via the connecting tubes 52 for each cylinder (in this configuration, a plurality (two) connecting tubes 52). Stores clean air just before being taken in. The sub chamber 102 is a space for accommodating an element 44 that cleans the outside air, and the outside air introduced into the sub chamber 102 is cleaned by the element 44 and supplied to the main chamber 101.

4 is a view showing the internal structure of the air cleaner 41 from above, and FIG. 5 is a cross-sectional view of the air cleaner 41 of FIG. In FIG. 4, the right side cover 43 is attached and the left side cover 43 is removed.
As shown in FIGS. 2 to 5, the air cleaner case 42 is formed in a hollow structure having an opening (hereinafter referred to as an upper opening) 42 </ b> A that opens upward between the left and right main frame front portions 13 </ b> A. The main chamber 101 is formed by closing the opening 42A with a lid 42B (FIG. 3).

  As shown in FIG. 4, the air cleaner case 42 has left and right straddling portions 42 </ b> X that extend from the main chamber 101 to the left and right and straddle the left and right main frame front portions 13 </ b> A from above. Each straddling portion 42X has an opening (hereinafter referred to as a side opening) 42K (see FIG. 5) that opens to the outside in the vehicle width direction. Each straddling portion 42X has a stay 42S that extends rearward from the side opening 42K and is fastened to each main frame 13, and the air cleaner 41 is supported on the main frame 13 by a pair of left and right stays 42S.

As shown in FIGS. 4 and 5, an element 44 is accommodated in each side opening 42K, and a side cover 43 is fastened so as to cover each side opening 42K. 102 is formed.
The air cleaner case 42 is formed symmetrically with respect to the vehicle width direction center plane (hereinafter referred to as the vehicle body center plane) C1 (FIG. 3), and each side cover 43 is also defined with respect to the vehicle body center plane C1. It is formed in a symmetrical shape.

  As shown in FIG. 3, the main chamber 101 is formed in a rectangular box shape extending in the vehicle width direction across the left and right main frame front portions 13A. Further, as shown in FIG. 2, the main chamber 101 has an upper surface (corresponding to the upper surface of the lid body 42 </ b> B) formed along the bottom plate 21 </ b> L of the fuel tank 21 as viewed from the side of the vehicle body. As a result, the main chamber 101 can be disposed close to the bottom plate 21L of the fuel tank 21, and a large-capacity main chamber 101 can be formed by making effective use of the space between the fuel tank 21 and the engine 31. Further, since the element 44 is not disposed between the left and right main frames 13, the capacity of the main chamber 101 can be increased also by this. Further, since the main chamber 101 is covered with the fuel tank 21, the main chamber 101 is not viewed from the outside, which is advantageous for improving the vehicle body design.

As shown in FIGS. 4 and 5, in the main chamber 101, a first resonator 61 extending from the left and right connecting tubes 52 and a second resonator 62 disposed between the main chamber 101 and the left and right sub chambers 102 are provided. And. The first resonators 61 are resonators that reduce the intake sound of the left and right connecting tubes 52 using the Helmholtz resonance principle, and are arranged in a pair of left and right between each connecting tube 52 and the left and right side walls of the main chamber 101. Is done.
The second resonator 62 is a resonator that reduces the intake sound of the left and right sub chambers 102 using the Helmholtz resonance principle, and is downstream of the element 44 of the left and right sub chambers 102 (the left and right straddle portions). 42X). The left and right first and second resonators 61 and 62 are provided at symmetrical positions with respect to the vehicle body center plane C1.

The left and right first resonators 61 are respectively connected to the connecting tube 52, and the left and right second resonators 62 are detachably attached to the air cleaner case 42 using a pair of front and rear locking portions 64 (see FIG. 5). It is done.
As shown in FIG. 5, the element 44 is attached to a partition wall 46 that covers the side opening 42 </ b> K of the air cleaner case 42. The partition wall 46 is fastened to the side opening 42 </ b> K of the air cleaner case 42 and partitions the sub chamber 102 left and right.

FIG. 6 shows a view of the air cleaner 41 as viewed from the right side together with the peripheral structure. In FIG. 6, the side cover 43 is removed and the partition wall 46 is exposed.
The partition wall 46 has an element opening 46A in which the element 44 is mounted, and the element 44 is fastened to the partition wall 46 by a pair of upper and lower fastening portions (in this configuration, male screws) 71.
As shown in FIG. 6, the left and right second resonators 62 are respectively mounted in the element openings 46A in a side view of the vehicle body. Therefore, when each side cover 43 and element 44 are removed, each second resonator 62 is exposed to the outside, and maintenance and attachment / detachment work of the second resonator 62 can be easily performed.

As shown in FIG. 3, the sub chamber 102 is formed in a box shape along a V-shaped gap S <b> 1 formed between the outer wall surface 13 </ b> M of the left and right main frames 13 and the inner wall surface 21 </ b> M of the fuel tank 21. The Further, the sub chamber 102 is disposed at a position overlapping the left and right main frames 13 and the fuel tank 21 in a side view of the vehicle body.
Hereinafter, the sub chamber 102 will be described in detail. The rear portion 102R of the sub chamber 102 enters the V-shaped gap S1 up and down, and overlaps the outer cover portion 21C of the fuel tank 21 in a side view of the vehicle body as shown in FIG. Further, the front portion 102F of the sub chamber 102 is located in front of the vehicle body with respect to the gap S1, and projects forward from the outer cover portion 21C of the fuel tank 21 in a side view of the vehicle body.

  As shown in FIG. 2, the rear portion 102R of the sub chamber 102 includes at least the rear end portion of the sub chamber 102, and both the rear end portion of the side opening 42K and the rear end portion of the side cover 43 are provided. Contains. The front portion 102F of the sub chamber 102 includes at least a front end portion of the sub chamber 102 (a front end portion of the side opening 42K and a front end portion of the side cover 43). In this configuration, the front portion 102F includes the front and rear intermediate portions of the sub chamber 102 (front and rear intermediate portions of the side opening 42K and front and rear intermediate portions of the side cover 43) in addition to the front end portion of the sub chamber 102. .

The side cover 43 constituting the outer portion of the sub chamber 102 in the vehicle width direction is formed in a cover shape that expands forward in the vehicle width direction. As a result, the entire sub chamber 102 is formed in a bulging shape that expands forward in the vehicle width direction.
Here, the outer side surface 43M of the side cover 43 that constitutes the vehicle width direction outer side surface of the sub chamber 102 is formed in an inclined surface along the inner wall surface 21M of the fuel tank 21 while being attached to the air cleaner case 42. . Further, the inner side surface 42M of the straddling portion 42X constituting the inner surface in the vehicle width direction of the sub chamber 102 at a position facing the main frame front portion 13A is an inclined surface along the outer wall surface 13M of the main frame front portion 13A (see FIG. 3).
Accordingly, the sub chamber 102 can be disposed close to the inner wall surface 21M of the fuel tank 21 and the outer wall surface 13M of the main frame front portion 13A while increasing the capacity by using the gap S1.
In this way, in this configuration, the large-capacity main chamber 101 is secured and the sub-chamber 102 is also increased in capacity, thereby providing the air cleaner 41 that has a large capacity and a wide element area and can easily improve the intake efficiency. Can be obtained.

Further, in this configuration, by sliding the outer side surface 43M of the side cover 43 back and forth along the inner wall surface 21M of the fuel tank 21, the side cover 43 can be easily put in and out of the V-shaped gap S1. . In other words, the side cover 43 can be easily put in and out using the inner wall surface 21M of the fuel tank 21 as a guide.
As shown in FIG. 2, the rear portion 102R of the side cover 43 is integrally provided with a pair of upper and lower claw portions 43T protruding rearward. In addition, a pair of upper and lower hole portions 42H into which a pair of upper and lower claw portions 43T are inserted from the front and engaged are integrally provided around the side opening 42K of the straddle portion 42X to which the side cover 43 is attached. .
Thereby, the claw part 43T of the side cover 43 can be easily engaged with the hole part 42H of the straddling part 42X by shifting the side cover 43 backward using the inner wall surface 21M of the fuel tank 21 as a guide. . The side cover 43 can be temporarily assembled by the engagement.

As shown in FIG. 6, the engaging structure including the claw portion 43 </ b> T and the hole portion 42 </ b> H is covered with the fuel tank 21 because it is provided in the rear portion of the sub chamber 102. For this reason, the engagement structure is not viewed from the outside, which is advantageous for improving the vehicle body design.
Moreover, since the side cover 43 can be temporarily assembled, the operation | work which fastens the side cover 43 to the air cleaner case 42 by several fastening part 73A, 73B, 73C is also easy.
Here, the fastening portions 73 </ b> A, 73 </ b> B, 73 </ b> C for fixing the side cover 43 are fastened to the partition wall 46 via the side cover 43.
More specifically, as shown in FIG. 6, the partition wall 46 is integrally formed with a plurality of fastened portions 83A, 83B, 83C to which the fastening portions 73A, 73B, 73C are fastened, and these fastened portions 83A. ˜83C is a region of the front portion 102F of the sub chamber 102 in the partition wall 46, and is formed in a female screw provided at a distance around the side opening 42K.

As shown in FIG. 2, the fastening portion 73 </ b> A is a male screw that fastens the front upper portion of the side cover 43 to the fastened portion 83 </ b> A provided on the air cleaner case 42 side from the outside in the vehicle width direction. The fastening portion 73B is a male screw that fastens the front end portion of the side cover 43 to the fastened portion 83B provided on the air cleaner case 42 side from the outside in the vehicle width direction. The fastening portion 73C is a male screw that fastens the front lower portion of the side cover 43 to the fastened portion 83B provided on the air cleaner case 42 side from the outside in the vehicle width direction.
The fastening portions 73A, 73B, and 73C and the fastened portions 83A, 83B, and 83C are referred to as the fastening portion 73 and the fastened portion 83 when there is no need to distinguish them.
As shown in FIG. 2, these fastening portions 73 are fastened to the region of the front portion 102 </ b> F of the sub chamber 102 from the outside in the vehicle width direction, so that each fastening portion 73 can be attached and detached without removing the fuel tank 21. Can do. Therefore, the side cover 43 can be easily attached and detached without removing the fuel tank 21.

When the side cover 43 is removed, the element 44 is exposed to the outside as shown in FIG. That is, the side cover 43 functions as an element lid that covers the element 44 so as to be exposed, and also functions as a cover that partitions the upstream space of the element 44 in the sub chamber 102.
The side cover 43 and an intake duct 81 to be described later are covered with a vehicle body cover (not shown) (also referred to as a front side cowl) that covers the front left and right of the vehicle body. The vehicle body cover (front side cowl) is detachably provided without removing the fuel tank 21.

As shown in FIG. 6, the rear portion 44R of the element 44 overlaps the outer cover portion 21C of the fuel tank 21 in a side view of the vehicle body, and the front portion 44F of the element 44 is an outer cover portion of the fuel tank 21 in a vehicle body side view. It is exposed in front of 21C. As a result, the large element 44 can be arranged.
As shown in FIG. 6, the upper and lower fastening portions 71 that fasten the element 44 are fastened to the region of the front portion 102 </ b> F of the sub chamber 102 in the partition wall 46 from the outside in the vehicle width direction. For this reason, the fastening portion 71 can be attached and detached without removing the fuel tank 21, and the element 44 can be easily attached and detached. Accordingly, various maintenance operations such as inspection, cleaning, and replacement of the element 44 can be easily performed without removing the fuel tank 21.

The left and right side covers 43 are each provided with an intake duct 81 for introducing outside air into the sub chamber 102. These intake ducts 81 extend forward from the side cover 43, have a front end opened forward, and intake outside air in front of the engine 31. Thereby, outside air that is not affected by the heat of the engine 31 can be introduced into the sub chamber 102.
The intake ducts 81 are fixed to the left and right side covers 43 by fastening a plurality of fastening portions 75 to the outer side surfaces 43M of the side covers 43 from the outside in the vehicle width direction. These fastening portions 75 are fastened to the area of the front portion 102F of the sub chamber 102 in the outer surface 43M of the side cover 43. Accordingly, the plurality of fastening portions 75 can be attached and detached without removing the fuel tank 21, and the intake duct 81 can be easily attached and detached.
As shown in FIG. 2, the intake duct 81 is fastened to the front / rear intermediate portion (corresponding to the front / rear intermediate portion of the sub chamber 102) of the outer surface 43 </ b> M of the side cover 43. Can be directed toward.

  Further, in the motorcycle 10, as shown in FIG. 1, a pair of left and right air-cooled cooling water that has passed through the engine 31 is provided below the left and right side covers 43 and to the left and right of the cylinder portion 32 of the engine 31. The radiator 91 is disposed. As described above, since the intake duct 81 extends forward from the left and right side covers 43, the outside air warmed by the radiator 83 is difficult to enter the intake duct 81. Accordingly, outside air that is not affected by the heat of the radiator 83 can be introduced into the sub chamber 102.

  In addition, a radiator fan 92 is attached to the rear surface of the radiator 91, and a radiator cover 93 that extends rearward above the radiator 91 and inward in the vehicle width direction is attached. The radiator cover 93 suppresses heat transmitted from the engine 31 to the radiator 91 and guides the outside air that has passed through the radiator 91 backward. Accordingly, it is possible to suppress the thermal influence on the air cleaner 41 located above the radiator 91 in a side view of the vehicle body.

  As described above, in the present embodiment, as shown in FIG. 2, the air cleaner 41 disposed below the vertical fuel tank 21 positioned above the left and right main frames 13 is disposed between the main frames 13. Main chamber 101 and a sub chamber 102 disposed outside the main frame 13 in the vehicle width direction. The rear portion 102R of the sub chamber 102 and the rear portion of the element 44 in the sub chamber 102 are the main frame. 13 is located in the gap S1 formed between the outer wall surface 13M of the fuel tank 21 and the inner wall surface 21M of the fuel tank 21, and the front portion 102F of the sub chamber 102 and the front portion of the element 44 are more forward of the vehicle body than the gap S1. Is positioned and protrudes forward from the fuel tank 21 in a side view of the vehicle body, and the element 44 is disposed on the front side portion 102F of the sub chamber 102 in the vehicle width direction outside Fastening portion 73 is provided for fastening the side cover (Element lid) 43 et cover.

According to this configuration, the space between the main frames 13 can be used to secure the capacity of the main chamber 101, and the gap S <b> 1 formed between the outer wall surface 13 </ b> M of the main frame 13 and the inner wall surface 21 </ b> M of the fuel tank 21. The capacity of the sub chamber 102 can also be secured using Furthermore, since the fastening portion 73 that fastens the side cover 43 that covers the element 44 from the outside in the vehicle width direction is located in front of the fuel tank 21 in a side view of the vehicle body, the fastening portion 73 is accessed without removing the fuel tank 21. be able to. Thereby, the side cover 43 can be removed without removing the fuel tank 21.
As a result, maintenance such as inspection, cleaning, and replacement of the elements 44 in the side cover 43 is possible without removing the fuel tank 21 while securing the capacity of the air cleaner 41.

  As shown in FIG. 2, the side cover 43 has a claw portion 43T protruding rearward, and the sub chamber 102 has a claw portion 43T inserted from the front into a rear portion 102R located in the gap S1. Since it has the hole 42H to match, it becomes easy to ensure the support strength of the side cover 43. In addition, the side cover 43 can be slid in the front-rear direction to be temporarily fixed to the sub chamber 102 or taken out from the sub chamber 102, so that the side cover 43 can be easily attached and detached.

  Further, as shown in FIG. 6, a fastening portion (element fastening portion) 71 that fastens the element 44 to the sub chamber 102 is provided in front of the fuel tank 21. Can be accessed. Therefore, the element 44 can be removed without removing the fuel tank 21, and the element can be easily replaced.

Further, as shown in FIG. 3, a gap S1 formed between the outer wall surface 13M of the main frame 13 and the inner wall surface 21M of the fuel tank 21 is formed in a V-shaped space that becomes wider toward the front. The side cover 43 is formed in a shape that expands in the vehicle width direction toward the front along the inner wall surface 21M of the fuel tank 21, and an intake duct 81 is detachably attached to the front of the fuel tank 21.
According to this configuration, the sub chamber 102 can be formed using the gap S <b> 1 between the main frame 13 and the fuel tank 21, and the side cover 43 can be easily attached and detached along the inner wall surface 21 </ b> M of the fuel tank 21. In addition, the intake duct 81 can be attached and detached without removing the fuel tank 21.

  Further, as shown in FIG. 6, a second resonator 62 is provided on the downstream side of the element 44 in the sub chamber 102, and the second resonator 62 is inside the element opening 46A in which the element 44 is mounted in a side view of the vehicle body. Attached to. According to this configuration, if the element 44 is removed, the second resonator 62 can be accessed without removing the fuel tank 21, and maintenance work such as inspection and replacement of the second resonator 62 can be easily performed.

As shown in FIG. 5, the air cleaner 41 includes an air cleaner case 42 that forms the main chamber 101 and has left and right straddling portions 42X that extend from the main chamber 101 to the left and right and straddle the left and right main frames 13 from above. The left and right straddling portions 42X have openings 42K that open outward in the vehicle width direction. The elements 44 are disposed in the openings 42K and the side covers 43 are fastened to close the openings 42K. A pair of sub chambers 102 is formed.
According to this configuration, the left and right sub chambers 102 can be easily formed by directly fastening the side cover 43 to the air cleaner case 42. Further, since it is not necessary to make the sub chamber 102 and the main chamber 101 in separate cases, the number of parts can be easily reduced.

The above-described embodiment is merely an aspect of the present invention, and can be arbitrarily modified and applied without departing from the gist of the present invention.
For example, in the above-described embodiment, the case where the fuel tank 21 is disposed above the left and right main frames 13 and the air cleaner 41 is disposed below the fuel tank 21 has been described. However, the fuel tank 21 is disposed at another location, A tank member that functions as a storage box may be disposed above the left and right main frames 13. That is, the intake structure of the present invention can also be applied to a configuration in which tank members (such as the fuel tank 21 and the storage box) are disposed above the left and right main frames 13 and the air cleaner 41 is disposed below the tank members.
Moreover, although the above-mentioned embodiment demonstrated the case where the fastening parts 71 and 73 were made into an external thread and the to-be-fastened part 83 was formed in an internal thread, a well-known fastening structure is widely applicable. For example, a quick fastener may be used for the fastening portion 73.
In the above-described embodiment, the case where the present invention is applied to the intake structure of the motorcycle 10 has been described. However, the present invention is not limited thereto, and the present invention can be widely applied to the intake structure of a saddle-ride type vehicle including other than a motorcycle. It is. The saddle riding type vehicle includes all vehicles that ride on the vehicle body, and includes not only motorcycles (including motorbikes) but also three-wheeled vehicles classified as ATVs (rough terrain vehicles) and trikes. It is a vehicle including a four-wheel vehicle.

10 Motorcycles (saddle-ride type vehicles)
13 Main frame 13M Outer wall surface 21 Fuel tank (tank member)
21M Inner wall surface 41 Air cleaner 43 Side cover (element lid)
44 Element 46 Partition 46A Element opening 61 First resonator 62 Second resonator 71 Fastening portion (fastening portion for element)
73, 73A to 73C Fastening portion 81 Intake duct 101 Main chamber 102 Sub chamber 102F Front portion 102R Rear portion S1 V-shaped gap

Claims (6)

In the intake structure of a saddle-ride type vehicle in which an air cleaner (41) is disposed below a tank member (21) disposed above the left and right main frames (13),
The tank member (21) is formed in a bowl shape that covers the left and right main frames (13) from the upper side to the side,
The air cleaner (41) includes a main chamber (101) disposed between the main frames (13) and a sub chamber (102) disposed on the outer side in the vehicle width direction of the main frame (13).
An element (44) is disposed in the sub chamber (102), and an element lid (43) that covers the element (44) from the outside in the vehicle width direction is fastened,
The rear portion (102R) of the sub chamber (102) and the rear portion of the element (44) are formed by an outer wall surface (13M) of the main frame (13) and an inner wall surface (21M) of the tank member (21). The front portion (102F) of the sub chamber (102) and the front portion of the element (44) are located in front of the vehicle body with respect to the gap (S1). The element lid (43) that is positioned and protrudes forward from the tank member (21) in a side view of the vehicle body and that is not fastened to the sub chamber (102) is connected to the inner wall surface of the tank member (21) ( 21M) is slid along the gap (S1) and can be taken in and out.
An intake structure for a saddle-ride type vehicle, wherein a fastening portion (73) for fastening the element lid (43) is provided in the front portion (102F) of the sub chamber (102). The element lid (43) has a claw portion (43T) protruding rearward,
The sub chamber (102) has a hole (42H) in which the claw portion (43T) is inserted and engaged with the rear portion (102R) located in the gap (S1) from the front. The intake structure of a saddle-ride type vehicle according to claim 1, An element fastening portion (71) for fastening the element (44) to the sub chamber (102);
The intake structure for a saddle-ride type vehicle according to claim 1 or 2, wherein the element fastening portion (71) is provided in front of the tank member (21). A V-shaped space in which a gap (S1) formed between the outer wall surface (13M) of the main frame (13) and the inner wall surface (21M) of the tank member (21) becomes wider toward the front. Formed into
The element lid (43) is formed in a shape extending in the vehicle width direction toward the front along the inner wall surface (21M) of the tank member (21), and is sucked forward of the tank member (21). The intake structure for a saddle-ride type vehicle according to any one of claims 1 to 3, wherein the duct (81) is detachably attached. A resonator (62) on the downstream side of the element (44) of the sub chamber (102);
The said resonator (62) is attached in the opening part (46A) for elements in which the said element (44) is mounted in a vehicle body side view, The one of Claims 1 thru | or 4 characterized by the above-mentioned. Intake structure for saddle-ride type vehicles. The air cleaner (41) forms the main chamber (101) and extends left and right from the main chamber (101) and has left and right straddling portions (42X) straddling the left and right main frames (13) from above. A case (42),
The left and right straddling portions (42X) have openings (42K) that open outward in the vehicle width direction, and the elements (44) are disposed in the openings (42K) and the openings (42K). The saddle-riding type vehicle according to any one of claims 1 to 5, wherein the element lid (43) is fastened so as to be closed to form a pair of left and right sub chambers (102). Intake structure.

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