JP4364521B2 - Motorcycle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention provides a vehicle body frame that includes a head pipe that supports a front fork so as to be steerable and a main frame that extends rearward and downward from the head pipe, and the cylinder axis is disposed substantially horizontally in the front-rear direction and is disposed below the main frame. The present invention relates to a motorcycle on which an engine to be mounted is mounted and an air cleaner disposed above a cylinder head of the engine is mounted.
[0002]
[Prior art]
There is already known a motorcycle in which a main frame of a body frame supports an engine disposed below the main frame with a cylinder axis substantially horizontal in the front-rear direction, and an air cleaner disposed above the cylinder head of the engine. (See, for example, Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 2002-37166
[Problems to be solved by the invention]
By the way, the front end of the down frame extending downward and rearward below the main frame may be connected to the head pipe in order to increase support rigidity as the engine becomes larger and to support the lower part of the engine. In this case, the space for disposing the air cleaner disposed above the cylinder head is reduced, and it is difficult to sufficiently increase the capacity of the air cleaner.
[0005]
The present invention has been made in view of such circumstances, and it is possible to set the capacity of the air cleaner sufficiently large when connecting the front ends of a pair of left and right down frames for supporting the engine to the head pipe. An object is to provide a motorcycle.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 includes a head pipe that supports a front fork in which a front wheel is pivotally supported at a lower end so as to be steerable, and a main frame that extends rearward and downward from the head pipe. In a motorcycle in which an engine disposed below a main frame with a cylinder axis substantially horizontal in the front-rear direction is mounted on a body frame, and an air cleaner disposed above a cylinder head of the engine is mounted, the head The pipe integrally has a head pipe gusset that extends from the head pipe to the rear of the vehicle and attaches the front end of the main frame, and the vehicle body frame extends downward and downward from the main frame. front portion is continuously provided through the head pipe gusset to said head pipe Together with the include a pair of left and right down frames for supporting the lower portion of the engine, the front half portion of the two down frames, rearwardly and downwardly so as to partially overlap with the cylinder head in spaced and side view of the vehicle behind the front wheel The air cleaner is disposed in a posture along the one down frame in front of the front half of the one down frame , and a part of the air cleaner overlaps the head pipe gusset in a side view of the vehicle. be disposed, the overlapping front end of the one down frame behind the position removably attached to the head pipe gusset Rutotomoni cleaner of the air cleaner through the one down frame to the head pipe gusset A case is detachably attached, and a rear end of the one down frame is And characterized in that the pivot plate coupled to the rear-frame mounted detachably, also invention of claim 2, wherein, in addition to the configuration of the invention according to claim 1, previous SL-down frame side view of the vehicle characterized in that it is placed so as to overlap with the throttle body on prior Symbol cylinder head in.
[0007]
According to such a configuration, it is possible to support the lower part of the engine and increase the support rigidity by connecting the front end portions of the pair of left and right down frames extending downward and rearward below the main frame to the head pipe. At the same time, since the air cleaner is arranged in front of one of the down frames so as to be along the down frame, it is possible to secure a sufficiently large space for arranging the air cleaner.
[0008]
According to a third aspect of the present invention, in addition to the configuration of the first or second aspect of the present invention, the cleaner case of the air cleaner is formed long in the vertical direction and the longitudinal direction thereof is the one down frame. According to this configuration, the capacity of the air cleaner can be sufficiently increased while avoiding the air cleaner from protruding to the side of the vehicle body.
[0009]
According to a fourth aspect of the invention, in addition to the configuration of the third aspect of the invention, the head pipe and a head pipe gusset for attaching a front end portion of the main frame are integrally cast, and an upper portion of the cleaner case is formed. Is attached to the head pipe gusset, and the lower part of the cleaner case is attached to the one down frame. According to such a configuration, the number of components of the body frame is reduced and the body frame of the cleaner case is used. Mounting rigidity can be increased.
[0010]
Invention of claim 5, wherein, in addition to the configuration of the invention described in claim 4, characterized in that the front end of the down frame other hand is welded to the head pipe gusset, according to such a configuration, the engine In addition to facilitating the detaching operation, the air cleaner is disposed in front of the down frame that is detachably attached to the head pipe gusset, so the detaching operation of the air cleaner is also facilitated.
[0011]
Invention according to claim 6, in addition to the configuration of the invention according to any one of the claims 1 to 5, the radiator is disposed on the side of the air cleaner, the other down in front of the other down frame It arrange | positions with the attitude | position along a flame | frame, According to this structure, the arrangement space of the radiator of a big capacity | capacitance can be ensured.
[0012]
According to a seventh aspect of the present invention, in addition to the configuration of the first aspect of the present invention, the cleaner case of the air cleaner is coupled to each other so that it can be divided at a dividing surface extending vertically. characterized in that it is composed of left and right case halves, further the invention of claim 8, wherein, in addition to the configuration of the invention according to any one of claims 1-7, wherein the air cleaner is the front view of the vehicle One of the down frames projects outward in the vehicle width direction.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below based on one embodiment of the present invention shown in the accompanying drawings.
[0014]
1 to 7 show an embodiment of the present invention. FIG. 1 is a side view of a motorcycle, FIG. 2 is a side view of a vehicle body frame, FIG. 3 is a view taken in the direction of arrow 3 in FIG. 2 is an enlarged sectional view taken along line 4-4 in FIG. 2, FIG. 5 is an enlarged sectional view taken along line 5-5 in FIG. 2, FIG. 6 is a side view showing an enlarged front portion of the motorcycle with the vehicle body cover omitted, and FIG. FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. 6.
[0015]
1 to 3, a motorcycle body frame 10 includes a head pipe 12 that supports a front fork 11 so as to be steerable, a main frame 13 that extends rearwardly downward from the head pipe 12, and the main frame 13. A pair of left and right down frames 14L, 14R whose front ends are connected to the head pipe 12 so as to extend rearwardly downward, and a cross member 15 connecting between the rear ends of the down frames 14L, 14R; A hanger plate 16 welded to a middle portion in the front-rear direction of the main frame 13, a pivot plate 17 connecting the rear end portion of the main frame 13 and the cross member 15, and a front end welded to the hanger plate 16 A pair of left and right seat rails 18 and 18 extending upward, and both seat rails 18 and 18 Middle and provided with said pivot plate 17 connecting the pair of left and right reinforcing frames 19 and 19.
[0016]
A front wheel WF is pivotally supported at the lower end of the front fork 11, a bar-shaped steering handle 20 is connected to the upper portion of the front fork 11, and a front fender 21 covering the front wheel WF is supported on the front fork 11. Is done.
[0017]
Referring also to FIG. 4, the head pipe 11 is integrally formed with a head pipe gusset 22 for attaching the front end portion of the main frame 13, and the head pipe gusset 22 has a rear end portion. The front end of the main frame 13 is inserted into the cylinder and is formed in a cylindrical shape.
[0018]
The main frame 13 has a cross-sectional shape composed of an outer frame portion 13a having a substantially right-angled quadrilateral shape and connecting frame portions 13b that connect, for example, the vertical center portions on both sides of the outer frame portion 13a. The head pipe gusset 22 is formed by extrusion molding of an alloy. The head pipe gusset 22 is formed in a cylindrical shape having a quadrangular cross section so as to insert the front end portion of the main frame 13 whose outer shape is a rectangular tube shape. The front end of the main frame 13 with the front end inserted into the rear end of the gusset 22 is welded to the head pipe gusset 22. A fender stay 23 is fixed to the rear end of the main frame 13 so as to close the rear end opening of the main frame 13.
[0019]
Referring also to FIG. 5, the pair of left and right down frames 14L, 14R are both made of aluminum alloy, and the right down frame 14R, which is one of the down frames 14L, 14R, is a rectangular tube member 24. The left and right down frames 14L, which are the other of the pair of left and right down frames 14L and 14R, are connected to the rear end of the rectangular tube member 27. 28 is continuously provided.
[0020]
In order to connect joint members 25 and 26 to the front and rear ends of the square tube member 24 in the down frame 14R on the right side, both joint members 25 and 26 are relative to the front and rear ends of the square tube member 24. Positioning projections 25a and 26a that are non-rotatably fitted are integrally provided so that the positioning projections 25a and 26a are fitted in the front and rear end portions of the rectangular tube member 24 in a corner. Joint members 25 and 26 are welded to the front and rear ends of the cylindrical member 24. Further, in order to connect the joint member 28 to the rear end of the square tube member 27 in the left down frame 14L, the joint member 28 is fitted to the rear end portion of the square tube member 27 so as not to be relatively rotatable. The positioning projection 28a is integrally projected, and the joint member 28 is welded to the rear end of the square tube member 27 in a state where the positioning projection 28a is fitted to the rear end portion of the square tube member 27.
[0021]
A flat mounting seat 32 is formed on the right side surface of the head pipe gusset 22 along the vertical plane. The front end of the right down frame 14R of the pair of left and right down frames 14L, 14R is attached to the mounting seat 32. Removably attached. That is, on the right side surface of the head pipe gusset 22, for example, a pair of upper and lower screw holes 33, 33 are provided so as to open to the mounting seat 32, and the joint member 25 constituting the front end portion of the right down frame 14R is provided. Bolts 34, 34 that are in contact with the mounting seat 32 and are inserted into the joint member 25 are screwed into the screw holes 33, 33, so that the front end portion of the right down frame 14 </ b> R is attached to the mounting seat 32. Removably attached.
[0022]
On the other hand, on the left side surface of the head pipe gusset 22, a guide portion 35 that sandwiches the front end portion of the left down frame 14L, that is, the front end portion of the rectangular tube member 27 from both sides, has a substantially U-shape that opens obliquely upward and forward. The front end portion of the rectangular tube member 27 that is positioned by being fitted into the guide portion 35 is welded to the left side surface of the head pipe gusset 22.
[0023]
The left end portion of the cross member 15 connecting the rear end portions of the down frames 14L and 14R is fitted with a part of the cross member 15 to the joint member 28 constituting the rear end portion of the left down frame 14L. Welded in a state. Further, the right end portion of the cross member 15 is brought into contact with the inner surface of the joint member 26 constituting the rear end portion of the right down frame 14R, is inserted through the joint member 26, and is coaxially screwed into the cross member 15. By tightening the bolt 36, the right end of the cross member 15 is attached to the rear end of the right down frame 14R.
[0024]
Further, a step 37 is attached to the lower surfaces of the joint members 28 and 26 constituting the rear ends of the down frames 14L and 14R, respectively.
[0025]
The pivot plate 17 is formed to have a substantially U-shaped cross-sectional shape with the front side open, and the upper end portion of the pivot plate 17 is welded to the left and right side surfaces at the rear end portion of the main frame 13. A lower end portion of the pivot plate 17 is fixed to an intermediate portion of the cross member 15.
[0026]
Below the main frame 13, for example, a water-cooled engine E with a cylinder axis slightly raised forward is disposed. The upper part of the engine E is supported by the hanger plate 16, and the lower part of the engine E is both It is supported by support plates 38 fixed to intermediate portions of the rectangular tube members 24, 27 in the down frames 14L, 14R. Further, the rear portion of the engine E is supported at two upper and lower portions of the pivot plate 17.
[0027]
A support cylinder 40 that supports the front end portion of the rear fork 39 so as to swing up and down is fixed to the pivot plate 17 so as to protrude from both sides, and a rear wheel WR is attached to the rear end of the rear fork 39. Be supported. Further, rear cushions 41 are provided between the seat rails 18 and the rear forks 39 in the vehicle body frame 10. The engine E constitutes a power unit P together with the transmission M, and the output of the transmission M is transmitted to the rear wheel WR via the chain 42.
[0028]
In FIG. 6, a throttle body 45 is connected to an upper side wall of a cylinder head 43 in the engine E via an intake pipe 44, and a fuel injection module 46 is attached in the middle of the intake pipe 44. The fuel injection module 46 includes a fuel injection valve 47 that injects fuel from the intake pipe 44 into the cylinder head 43, a fuel pump 48 that supplies fuel to the fuel injection valve 47, and a fuel supply pressure from the fuel pump 48. And a fuel filter (not shown) for filtering the fuel sucked by the fuel pump 48, and the like. The fuel pump 48 includes the fuel filter and a fuel hose (not shown). ) To the fuel tank 50.
[0029]
In addition, an electronic control unit (not shown) is attached to the throttle body 45, and the engine speed, engine temperature, throttle opening, crank position, and the like are input to the electronic control unit. Based on this, the electronic control unit controls the operation of the fuel injection valve 47, the fuel pump 48, the ignition coil (not shown), and the like.
[0030]
By the way, the fuel tank 50 is disposed above the rear wheel WR so as to be supported by the seat rails 18... And the upper portion of the fuel tank 50 is covered with a riding seat 51 of, for example, a tandem type. The riding seat 51 is supported by the seat rails 18 so as to be openable and closable so that fuel can be supplied to the fuel tank 50.
[0031]
The upstream end of the throttle body 45 is connected to an air cleaner 54 disposed above the cylinder head 43 in the engine E, and the air cleaner 54 is a part of the down frames 14L and 14R in the body frame 10. Is disposed in front of the right down frame 14R in a posture along the down frame 14R.
[0032]
Referring also to FIG. 7, the air cleaner 54 is formed by incorporating a cleaner element 58 in a cleaner case 55 formed by joining left and right case halves 56 and 57 made of synthetic resin. The left and right case halves 56 and 57 are coupled to each other so that they can be divided at a dividing surface extending vertically, and the cleaner case 55 is formed long in the vertical direction and the longitudinal direction thereof extends to the right down frame 14R. It is arranged along.
[0033]
In addition, an inlet pipe 59 for introducing air from outside to be purified by the cleaner element 58 into the cleaner case 55 is provided in the upper part of the right case half 57 in the cleaner case 55. Open toward the head pipe 12 side. Further, an upstream end of an outlet pipe 60 for leading the air purified by the cleaner element 58 is connected to a lower portion of the left case half 56 in the cleaner case 55, and the downstream end of the outlet pipe 60 is connected to the throttle. Connected to the body 45.
[0034]
By the way, a flange portion 61 is formed in the cleaner case 55 at a portion corresponding to the dividing surface of the left and right case halves 56, 57, and the flange portion 61 is located above the cleaner case 55 in the head. The flange 61 is detachably attached to the right down frame 14 </ b> R at the lower part of the cleaner case 55. In other words, the flange portion 61 is integrally provided with an upper support plate portion 61 a that protrudes laterally from the upper portion of the flange portion 61 and a lower support plate portion 61 b that protrudes laterally from the lower portion of the flange portion 61. The upper support plate portion 61a is attached to the head pipe gusset 22, and the lower support plate portion 61b is attached to the right down frame 14R.
[0035]
The upper support plate portion 61a is attached to the outer end portion of the support stay 62 by a bolt 63 and a nut 64, and the inner end portion of the support stay 63 is a joint constituting the front end portion of the right down frame 18R. By fastening together with the member 25, the head pipe gusset 22 is attached to the right side surface of the head pipe gusset 22 by bolts 34 and 34. The lower support plate portion 61b is in contact with a support stay 65 fixed to an intermediate portion of the rectangular tube member 24 in the right down frame 14R, and is attached to the support stay 65 with a bolt 66 and a nut 67.
[0036]
A radiator 68 is arranged on the left side of the air cleaner 54, and this radiator 68 is arranged in a posture along the down frame 14L in front of the left down frame 14L which is the other of the down frames 14L and 14R. Is done.
[0037]
Moreover, the upper portion of the radiator 68 is attached to the head pipe gusset 22, and the lower portion of the radiator 68 is attached to the left down frame 14L. That is, a support plate 70 facing the support boss 69 protruding from the left side surface of the head pipe gusset 22 is provided on the upper portion of the radiator 68, and this support plate 70 is attached to the support boss 69 by the screw member 71. One end of a support stay 72 is attached to the lower portion of the radiator 68, and the other end of the support stay 72 is attached to an intermediate portion of the rectangular tube member 27 in the left down frame 14L by a screw member 73.
[0038]
In FIG. 1 again, a synthetic resin vehicle body cover 78 is attached to the vehicle body frame 10 to cover the vehicle body frame 10, a part of the engine E, the throttle body 45, the air cleaner 54, the radiator 68, and the fuel tank 50. The vehicle body cover 78 includes front side covers 79 arranged on the left and right sides of the main frame 13 and leg shields 80 connected to the front portions of the front side covers 79 so as to cover the rider's legs from the front. And the front top cover 81 connected to both leg shields 80 so as to cover the head pipe 12 from the front, and the front top cover 81 so as to cover the head pipe 12 from the rear side and cover the main frame 13 from above. Main frame top cover 82 and fuel tank 50 Constituted by the rear side cover 83 which covers from the side. Further, the rear upper portion of the rear wheel WR is covered with a rear fender 84, and the rear fender 84 is supported by the both seat rails 18 and the fender stay 23.
[0039]
Next, the operation of this embodiment will be described. The vehicle body frame 10 includes a head pipe 12 that supports the front fork 11 so as to be steerable, a main frame 13 that extends rearwardly downward from the head pipe 12, and the main frame 13. It includes a pair of left and right down frames 14L, 14R whose front end portions are connected to the head pipe 12 so as to extend rearward and downward, with the cylinder axis line being substantially horizontal in the front-rear direction and below the main frame 13. The lower part of the engine E to be arranged is supported by the down frames 14L and 14R. For this reason, the support rigidity of the engine E can be increased.
[0040]
An air cleaner 54 attached to the vehicle body frame 10 above the cylinder head 43 in the engine E is positioned along the down frame 14R in front of the right down frame 14R in one of the down frames 14L and 14R in this embodiment. Is arranged in. For this reason, although the lower frames 14L and 14R support the lower part of the engine E, it is possible to secure an arrangement space for the air cleaner 54 having a sufficiently large capacity.
[0041]
Further, the cleaner case 55 of the air cleaner 54 is formed to be long in the vertical direction and the longitudinal direction thereof is disposed along the right down frame 14R, so that the air cleaner 54 is prevented from protruding to the side of the vehicle body. The capacity of 54 can be made sufficiently large.
[0042]
In addition, since the radiator 68 disposed on the left side of the air cleaner 54 is disposed in a posture along the down frame 14L in front of the left down frame 14L, it is possible to secure an arrangement space for the radiator 68 having a sufficiently large capacity.
[0043]
Further, the head pipe 12 and the head pipe gusset 22 for attaching the front end portion of the main frame 13 are integrally cast, and the upper portions of the cleaner case 55 and the radiator 68 are attached to the head pipe gusset 22, and the cleaner case 55 and the radiator The lower part of 68 is attached to the right down frame 14R, so that the number of components of the body frame 10 can be reduced and the rigidity of attachment of the cleaner case 55 and the radiator 68 to the body frame 10 can be increased.
[0044]
Further, the main frame 13 has a cross-sectional shape constituted by an outer frame portion 13a having a substantially right-angled quadrilateral shape and a connecting frame portion 13b connecting, for example, the vertical center portions on both sides of the outer frame portion 13a. It is formed by extrusion molding of an aluminum alloy, and the main frame 13 can be reduced in weight while ensuring its rigidity.
[0045]
Further, since the right down frame 14R is detachably attached to the head pipe gusset 22, and the left down frame 14L is welded, not only the operation of detaching the engine E is facilitated, but also the head pipe gusset 22 is attached to the head pipe gusset 22. Since the air cleaner 54 is disposed in front of the right down frame 14R that is detachably attached, the air cleaner 54 can be easily attached and detached.
[0046]
Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the present invention described in the claims. It is.
[0047]
For example, in the above embodiment, the connecting frame portion 13b of the main frame 13 is arranged so as to connect the center portions in the vertical direction on both sides of the outer frame portion 13a, but the outer frame portion 13a is composed of a plurality of connecting frame portions 13b. The main frame 13 may be configured so as to connect both sides thereof, and if the rigidity can be ensured only by the outer frame portion 13a, the connecting frame portion 13b may be omitted.
[0048]
【The invention's effect】
As described above, according to the present invention, the front end portions of the pair of left and right down frames extending downward and rearward below the main frame are connected to the head pipe, thereby supporting the lower portion of the engine and increasing the support rigidity of the engine. In addition, since the air cleaner is arranged in front of one of the two down frames so as to be along the down frame, it is possible to secure a sufficiently large space for arranging the air cleaner.
[0049]
According to the invention of claim 3 , the capacity of the air cleaner can be sufficiently increased while avoiding the air cleaner from protruding to the side of the vehicle body.
[0050]
According to the fourth aspect of the invention, the number of components of the body frame can be reduced and the mounting rigidity of the cleaner case to the body frame can be increased.
[0051]
According to the invention of claim 5 , not only the engine detachment operation is facilitated, but also the air cleaner detachment operation is facilitated.
[0052]
Furthermore, according to the invention of claim 6 , it is possible to secure an arrangement space for a radiator having a sufficiently large capacity.
[Brief description of the drawings]
FIG. 1 is a side view of a motorcycle.
FIG. 2 is a side view of a vehicle body frame.
FIG. 3 is a view taken in the direction of arrow 3 in FIG. 2;
4 is an enlarged sectional view taken along line 4-4 of FIG.
5 is an enlarged cross-sectional view taken along line 5-5 of FIG.
Fig. 6 is an enlarged side view of the front part of the motorcycle with the vehicle body cover omitted.
7 is a cross-sectional view taken along line 7-7 in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Body frame 11 ... Front fork 12 ... Head pipe 13 ... Main frame 13a ... Outer frame part 13b ... Connection frame part 14R ... One down frame
14L .... the other down frame 22 ... head pipe gusset 43 ... cylinder head 45 ... throttle body 54 ... air cleaner 55 ... cleaner case 56 ... left case half 57 ... right side Case half 68 ... Radiator E ... Engine Wf ... Front wheel

Claims (8)

A vehicle body comprising a head pipe (12) that supports a front fork (11) whose front wheel (Wf) is pivotally supported at the lower end so as to be steerable, and a main frame (13) that extends rearwardly downward from the head pipe (12). An engine (E) disposed below the main frame (13) with the cylinder axis substantially horizontal in the front-rear direction is mounted on the frame (10) and above the cylinder head (43) of the engine (E) In a motorcycle to which an air cleaner (54) arranged in
The head pipe (12) integrally has a head pipe gusset (22) that extends from the head pipe (12) to the rear of the vehicle and attaches the front end of the main frame (13).
The vehicle body frame (10) has a front end connected to the head pipe (12) via the head pipe gusset (22) so as to extend rearward and downward below the main frame (13), and It includes a pair of left and right down frames (14L, 14R) that support the lower part of the engine (E) , and the front half portions of both down frames (14L, 14R) are spaced rearward from the front wheels (Wf) and are side surfaces of the vehicle. It is inclined downward and rearward so as to partially overlap the cylinder head (43) when viewed.
The air cleaner (54) is disposed in a posture along the one down frame (14R) in front of the front half of the one down frame (14R),
A part of the air cleaner (54) is arranged so as to overlap the head pipe gusset (22) in a side view of the vehicle, and the front end of the one down frame (14R) is behind the overlapping position of the head pipe gusset. removably attached to (22) Rutotomoni, cleaner case of the air cleaner (54) through said one of the down frame (14R) to the head pipe gusset (22) (55) is detachably mounted,
The motorcycle , wherein a rear end of the one down frame (14R) is detachably attached to a pivot plate (17) coupled to a rear portion of the main frame (13) . Before SL down frames (14L, 14R) is characterized in that it is placed so as to overlap with the previous SL throttle body on the cylinder head (43) (45) as viewed from the side of the vehicle, a motorcycle according to claim 1 . Cleaner case (55) of the air cleaner (54) has its longitudinal direction while being elongated in the vertical direction along a said one of the down frame (14R) characterized in that it is arranged according to claim 1 or 2 Motorcycle described in 1. The head pipe (12) and the head pipe gusset (22) for attaching the front end portion of the main frame (13) are integrally cast and the upper portion of the cleaner case (55) is formed on the head pipe gusset (22). The motorcycle according to claim 3 , wherein the motorcycle is attached and a lower portion of the cleaner case (55) is attached to the one down frame (14R). 4. The motorcycle according to the front end of the down frame other hand (14L) to the head pipe gusset (22) is characterized in that it is welded. The radiator (68) arranged on a side of the air cleaner (54) is arranged in a posture along the other down frame (14L) in front of the other down frame (14L). Item 6. The motorcycle according to any one of Items 1 to 5 .   The cleaner case (55) of the air cleaner (54) is composed of left and right case halves (56, 57) which are connected to each other so as to be divided by a dividing surface extending vertically. The motorcycle according to any one of claims 1 to 3. The motorcycle according to any one of claims 1 to 7 , wherein the air cleaner (54) protrudes outward in the vehicle width direction of the one down frame (14R) in a front view of the vehicle.

Images