JP4095087B2 - Saddle riding vehicle - Google Patents

Description

  The present invention relates to a straddle-type vehicle, such as a scooter type motorcycle, and the like. The present invention relates to a straddle-type vehicle including a power unit including wheels.

  For example, according to Japanese Patent Laid-Open No. 10-141054 (first conventional example), a saddle riding type vehicle such as a scooter type motorcycle has a helmet storage space for storing a helmet provided below the seat. . For this reason, it was not possible to obtain a sufficient space for arranging, for example, an air cleaner below the seat. Therefore, according to the first conventional example, the air cleaner is disposed so as to protrude from the side portion of the vehicle body.

  Further, for example, according to Japanese Patent Application Laid-Open No. 57-114774 (second conventional example), an engine that is covered with a cover and is supported by a vehicle body frame and swings up and down in the space below the seat, and the rear A straddle-type vehicle including a power unit including wheels is disclosed. In the conventional example, an air cleaner is disposed above the engine in order to make the vehicle compact. With this structure, the width of the vehicle body can be made compact.

  However, according to the first conventional example, since the helmet housing space is provided below the seat, it is difficult to make the width of the vehicle body compact.

  In addition, when an air cleaner or the like is placed below the helmet storage space, there is a problem that the air cleaner capacity cannot be secured sufficiently, or the seat height increases because the air cleaner capacity is secured. .

  The straddle-type vehicle of the first conventional example has a structure in which the inside of the transmission device that transmits engine power to the rear wheels is cooled using air sucked from the outside. The cooling air intake port is formed around or near the rear wheel. For this reason, the durability of the air cleaner may be reduced due to the mixing of dust.

  Furthermore, according to the second conventional example, a large gap is formed between the upper surface of the air cleaner and the bottom surface of the fuel tank so that the air cleaner and the fuel tank do not collide. For this reason, when the capacity of the air cleaner or the fuel tank is ensured, or when the stroke of the power unit is increased, the seat height increases, and as a result, it is difficult to make the entire vehicle compact.

  Further, in the first and second conventional vehicles, the air cleaner is completely covered with a cover. For this reason, in order to replace the filter, the cover must be removed, and there is a problem that it is difficult to replace the filter.

  In addition, the second conventional example does not disclose cooling inside the transmission. Therefore, depending on how air is introduced, as in the first conventional example, the vehicle may be increased in size, or the durability of the air cleaner may be reduced.

  The present invention has been made in view of the above-described conventional problems, and ensures the capacity of an object storage unit and an air cleaner while suppressing the seat height, and also reduces the width of the vehicle body while suppressing a decrease in maintainability and durability of the transmission device. An object of the present invention is to provide a straddle-type vehicle capable of reducing the size of the vehicle and maintaining high external quality.

In order to achieve the above object, according to the saddle riding type vehicle according to the first aspect of the present invention , a space is defined below, a seat covered with a cover, and a vertical direction in the space. A power unit including a swinging engine and a rear wheel, a vehicle body frame that supports the power unit, an object storage portion disposed below the seat, and an air intake for taking in air. An air cleaner that swings together with the unit, wherein the engine is disposed in front of the rear wheel, the air cleaner is disposed above the engine inside the cover, and is disposed above the power unit. When the air cleaner is swung along with the swing, at least a part of the bottom surface of the object container and at least a part of the top surface of the air cleaner face each other in a substantially parallel state. As described above, the shape of the bottom surface of the object accommodating portion and the top surface of the air cleaner is formed, and the vehicle body frame has a pair of left and right frames arranged inside the cover, and the width of the air cleaner in the left-right direction is And at least a part of the power unit is formed to be narrower than a distance in the left-right direction between the pair of left and right frames, and the power unit includes at least a part of the air cleaner when the power unit and the air cleaner swing. The gist is that the body frame is supported so as to be positioned between the pair of frames .

  In order to achieve the above object, according to the saddle riding type vehicle according to the second aspect of the present invention, a seat that partitions a lower space and is covered with a cover, and a vertical direction in the space. A power unit including an engine and a rear wheel that swings in a straight line, a vehicle body frame that supports the power unit, and an air cleaner having an intake port for taking in air. The power unit includes a transmission device that extends in the front-rear direction, has a suction port that takes in air for transmitting the driving force of the engine to the rear wheels and cools the inside thereof, and the air cleaner The gist is that substantially the whole of the air intake port and the air intake port of the transmission device are disposed above the engine and in front of the air cleaner inside the cover.

FIG. 1 is a schematic side view of a scooter type motorcycle serving as a saddle-ride type vehicle according to the present invention. FIG. 2 is a diagram illustrating a state in which the swing type power unit swings upward and the swing type power unit is closest to the seat side. FIG. 3 is a partially enlarged view of the scooter according to the present embodiment, and shows a steady state and a closest approach state. FIG. 4 is an enlarged view of an air cleaner and its vicinity of the scooter type motorcycle of the present embodiment. FIG. 5 is a diagram showing a positional relationship among an air cleaner, a lower waterproof flap, an upper waterproof flap, a rear wheel, and a cell motor of the scooter type motorcycle according to the present embodiment. FIG. 6 is an enlarged view of a mounting protrusion for fixing the flap shown in FIG. FIG. 7 is a diagram showing a positional relationship among the lower waterproof flap, the upper waterproof flap, the rear wheel, and the cell motor in the closest approach state. FIG. 8 is an exploded perspective view showing structures of an air cleaner, a lower waterproof flap, and an upper waterproof flap. FIG. 9 is a side view of the air cleaner. FIG. 10 is a front view of the air cleaner body viewed from the opening side. FIG. 11 is a view of the air cleaner cover as viewed from the facing surface side facing the opening of the air cleaner body. FIG. 12 is a cross-sectional view showing the internal configuration of the air cleaner. FIG. 13 is a perspective view showing a positional relationship between the engine, the air cleaner, the carburetor, the cell motor, and the heat insulating member. FIG. 14 is a top view showing an engine, an air cleaner, a carburetor, and a heat insulating member. FIG. 15 is a diagram showing a positional relationship between the heat insulating member, the air intake port of the air cleaner, and the belt chamber intake port. FIG. 16 is an exploded perspective view showing the overall configuration of the belt chamber.

  Hereinafter, an embodiment according to the present invention will be described with reference to the drawings.

  The scooter type motorcycle 1 according to the present embodiment includes a body frame 3, a head pipe 5 provided above the body frame 5, a steel pipe main frame 7 extending obliquely rearward from the head pipe 5, The frame 7 includes a pair of left and right copper tube side frames 9a and 9b extending obliquely upward from the rear end of the frame 7.

  A swing type power unit 11 is pivotally supported between the pair of left and right side frames 9a and 9b so as to be swingable in the vertical direction. Referring to FIG. 3, the swing type power unit 11 is capable of integrally swinging an engine 13, a transmission case 15 incorporating a V-belt drive type continuously variable transmission on the left side of the engine 13, and an air cleaner 17. The rear wheel 19 </ b> B is pivotally supported at the rear end of the transmission case 15.

  In FIG. 3, the position of the swing type power unit 11 in a state where the occupant is not in the vehicle (steady state) is indicated by a solid line L1, and the air cleaner 17 and the rear wheel 19B are closest to the swing type power unit 11 ( The position of the swing type power unit 11 in the (closest approach state) is indicated by a dotted line L2. In other words, the state indicated by the solid line L1 corresponds to FIG. 1, and the state indicated by the dotted line L2 corresponds to the state of FIG.

  Further, a rear cushion unit 21 is interposed between the transmission case 15 and the left side frame 9a, and the swing type power unit 11 is moved in the vertical direction around the pivot 23 by the elastic force of the cushion unit 21 (AR1 in FIG. 3). , AR2 direction).

  Referring to FIGS. 1 and 2, a steering shaft 25 is rotatably inserted and supported on the head pipe 5. A front fork 27 is provided below the steering shaft 25 via an under bracket 26. A steering handle 29 having various instruments including a brake lever 28, operation switches, and the like is fixed to the upper end of the steering shaft 25. A front wheel 19F is pivotally supported at the lower end of the front fork 27.

  The steering handle 29 and the vehicle body frame 3 are surrounded by a resin cover member C. Hereinafter, the structure of the cover member C will be described.

  Referring to FIGS. 1 and 2, the cover member C includes a handle cover 31 that covers the steering handle 29, a front cover 33 that covers the front side of the head pipe 5 that constitutes the vehicle body frame 3, and an inner fender 53 that continues below the front cover 33. And a leg shield 35 that covers the rear side of the head pipe 5.

  At the lower end of the leg shield 35, a low-floor footboard 37 on which an occupant's foot is placed is connected. A side cover 39 is disposed at the rear portion of the foot board 37 so as to cover the lower space of the seat 43. As shown in FIGS. 1 and 3, the rear portion of the air cleaner 17 is attached so as to be exposed rearward from the lower edge of the side cover 39.

  The outer surface of the lens 51 of the pair of left and right headlight devices (not shown) provided on the front cover 33 and the outer surface of the front cover 33 draw a smooth curve. In the closing line 55 with the inner fender 53 that continues downward from the front cover 33, the side thereof is inclined so as to gradually rise upward from the front to the rear.

  Further, the footboard 37 provided in the vehicle front-rear direction from the lower end of the leg shield 35 is further provided with a footrest portion 101 whose front half is horizontal. Further, the footrest portion 101 is provided with an extension portion that is divided into left and right from the footrest portion 101 and is inclined rearward, and this extension portion functions as a footrest portion 103 for placing a foot of a rear occupant.

  A foot cover 105 that rises upward is formed inside the footrest portion 103. A side cover 39 is coupled to the upper end edge of the foot cover 105. An under cover 111 that protects the lower portion of the vehicle body is provided at the lower portion of the foot board 37, and the front end of the under cover 11 and the rear end of the inner fender 53 are coupled to each other.

  The left and right foot rests 103 of the rear occupant provided on the rear side of the foot board 37 are further formed with convex portions 103a and 103b having different heights. The front convex portion 103a abuts the tip of the rear occupant's shoe, and the rear convex portion 103b abuts the heel of the rear occupant's shoe, thereby reliably restraining the movement of the rear occupant in the front-rear direction. ing.

  The rear passenger's footrest 103 further protrudes outward by the thickness of the undercover 111 so as to cover the upper edge of the undercover 111 disposed at the lower portion of the footboard 37, and the surface of the undercover 111. , And a bent portion 113 that is bent short downward.

  With this structure, the footrest portion 103 of the rear occupant also functions as a protector, so that it is possible to prevent the undercover 111 from coming off from the upper end edge side of the foot, and the appearance is improved. In addition, since a part of the footrest portion 103 is formed so as to protrude to the outside of the vehicle body, a sufficient space for the footrest portion 103 can be secured, and the footrest portion 103 is disposed above the transmission case 15. A slimmer body structure is achieved.

  The side cover 39 includes a front cover 109 that surrounds the lower side of the seat 43 and an upper cover 143. The upper cover 143 has a long shape extending in the front and rear directions extended to the rear end side of the seat 43 on which the rear occupant sits, and a tail lamp 145 is provided at the rear end portion of the upper cover 143.

  When the closing edge 149 on the rear end side of the foot cover 105 is assembled to the closing edge 147 on the front end side of the upper cover 143, the foot board 37 is formed by the upper end edge of the foot cover 105 and the upper end edge of the upper cover 143. A continuous upper edge line 151 having a good appearance that rises in a gentle curve from the footrest 101 to the rear end of the seat 43 is formed. Note that a fender cover 181 that covers the upper side of the rear wheel 19B is coupled to the lower end side of the upper cover 143 by a mounting screw.

  In addition, referring to FIGS. 1 and 2, as shown by dotted lines, the inside of the front cover 109 constituting the side cover 39 and the inside of the upper cover 143 following the front cover 109, below the seat 43, An object storage portion 199 constituting the unit is disposed. When the sheet 43 is opened and when the sheet 43 is removed, an object or the like can be put in the object storage unit 199, and convenience can be improved.

  Unlike the object storage part in the conventional example described above, the object storage part 199 of the present embodiment does not have a large space enough to put a helmet, and is relatively small compared to the conventional object storage part. By making the object storage portion 199 smaller than the conventional one, the air cleaner 17 can be disposed below the seat 43, on the front side of the rear wheel 19B, and above the engine 13.

  Further, at least a part of the engine 13 and the air cleaner 17 is formed narrower in the width direction of the vehicle body than the distance between the pair of left and right side frames 9a and 9b. With such a structure, the air cleaner is not disposed so as to protrude from the side portion of the vehicle body as in the prior art, and a slimmer and better-looking structure is possible.

  Further, as shown by the solid lines in FIGS. 1 and 3, the object accommodating portion 199 moves upward on the seat 43 side (AR1 direction in FIG. 3) due to the elastic force of the rear cushion unit 21, with no occupant on the seat 43. The swing-type power unit 11 is swung downward (AR2 direction in FIG. 3) by the elastic force of the rear cushion unit 21, and the swing-type power unit 11 including the air cleaner 17 and the seat 43 are separated. In the state, the bottom part 199a of the object storage part 199 and the upper part 17a of the air cleaner 17 are sufficiently separated from each other.

  On the other hand, the state indicated by the dotted line in FIGS. 2 and 3 is a state where the occupant is on the seat 43 or when the occupant is driving on the seat 43 and the rear wheel 19 is stepped on the road surface, etc. When the rear wheel 19B is moved upward (in the direction of AR1 in FIG. 3), for example, the seat 43 side is moved downward against the elastic force of the rear cushion unit 21, in other words, swing type As a result of the power unit 11 swinging upward (in the direction AR1 in FIG. 3) about the pivot 23 against the elastic force of the rear cushion unit 21, the swing type power unit 11 and the seat 43 are in the closest state to each other. It is what is shown. The amount of movement by which the swing type power unit 11 can swing up and down is, for example, about 50 mm to 80 mm.

  In the closest state, as shown by the dotted lines in FIGS. 2 and 3, the bottom portion 199a of the object storage portion and the upper portion 17a of the air cleaner 17 are positioned almost in parallel with a predetermined interval without contacting each other. So they will not damage each other.

  More specifically, the bottom surface 199a of the object storage unit 199 and the upper surface 17a of the air cleaner 17 are formed in substantially the same shape, and the distance between them is configured to be substantially constant. The accommodating part 199 and the air cleaner 17 do not contact each other.

  As shown in FIG. 4, a lower waterproof flap 201 and an upper waterproof flap 203 are provided below and above the air cleaner 17, respectively. The pair of flaps 201 and 203 prevent dust from the rear wheel 19 </ b> B from entering the air cleaner 17 and the engine 13. The lower waterproof flap 201 and the upper waterproof flap 203 are formed of an elastic member such as rubber, for example.

  Referring to FIG. 4, a belt chamber intake duct 233 communicating with the belt chamber air cleaner 234 is disposed on the side of the air cleaner 17.

  As shown in FIG. 8, the air cleaner 17 includes an air cleaner wooden body 171 (air cleaner front portion) fixedly attached to the vehicle body, and an air cleaner cover 173 (air cleaner rear portion) detachably attached to the air cleaner body 171. It is composed of With this structure, the air cleaner 17 can be divided in the front-rear direction.

  Referring to FIG. 5, the lower waterproof flap 201 is attached to the upper side of the cell motor 205 and the lower side of the air cleaner cover 173. The lower part of the lower waterproof flap 201 hangs down and covers the engine 13 so that dust from the rear wheel 19B side does not enter the engine 13, and the lowermost end 201b is slightly bent toward the engine 13 side. Further, the upper side 201c of the lower waterproof flap 201 is bent to the rear wheel 19B side to prevent dust from the rear wheel 19B side from entering the air cleaner 17.

  On the lower side of the upper side 201c of the lower waterproof flap 201, a mounting protrusion 201a that protrudes from the lower waterproof flap 201 and is integrally formed is provided.

  As shown in FIG. 6, the mounting protrusion 201 a includes a narrow diameter portion A attached to the lower waterproof flap 201, a trapezoidal flange B having a base larger than the diameter of the narrow diameter portion A, and a flange B It is comprised from the cylindrical part C extended integrally from the opposite side to the thin diameter part A. As shown in FIG. The mounting protrusion 201a is formed of the same elastic member as the lower waterproof flap 201.

  In addition, as shown in FIG. 8, the some protrusion part 201a for attachment is provided in the vicinity of the upper side 201c of the lower side waterproof flap 201. As shown in FIG. The plurality of mounting protrusions 201a are fitted into mounting holes 300 (see FIG. 8) formed in the air cleaner cover 173. After fitting, the lower waterproof fender 201 is prevented from being detached from the air cleaner cover 173 by the step portion D between the flange B and the small diameter portion A.

  Further, as shown in FIG. 5, an upper waterproof flap 203 is provided at one end of the fender 207. The upper waterproof flap 203 has a lower end disposed adjacent to or in contact with the middle of the air cleaner cover 173 so that dust from the rear wheel 19 side does not enter the air cleaner 17 or the engine 13.

  As shown in FIG. 8, the upper waterproof flap 203 has an upper end formed with a plurality of mounting protrusions 203 a having the same structure as the mounting protrusion 201 a of the lower waterproof flap 201. The mounting protrusion 203 a is fitted into a mounting hole (not shown) formed in the fender 207, thereby preventing the upper waterproof flap 203 from coming off the fender 207. Therefore, the upper waterproof flap 203 is fixed to the vehicle body frame 3 by the mounting protrusion 203a via the fender 207.

  As shown in FIG. 1, when the occupant gets on the seat 43 of the scooter type motorcycle 1 or climbs over a step or the like on the road surface during traveling, the upper waterproof flap 203 is provided with the elastic force of the rear cushion unit 21. Accordingly, the sheet 43 side is moved downward (in the direction of AR2 in FIG. 3). That is, the swing type power unit 11 swings upward (in the direction of AR1 in FIG. 3) around the pivot 23 against the elastic force of the rear cushion unit 21, and the swing type power unit 11 is closest to the seat 43 side. (Closest state). In the closest state, the air cleaner 17 constituting the swing type power unit 11 also swings upward, and the lower end portion 203b of the upper waterproof flap 203 is in contact with the inclined surface 173a of the air cleaner cover 173 as shown in FIG. It is curved, thereby effectively preventing dust from the rear wheel 19 side from entering the air cleaner 17 and the engine 13.

  4 and 8, the protrusion 173c provided on the air cleaner cover 173 is fitted in the groove 203c provided on the upper waterproof flap 203 so as to be movable in the vertical direction. This prevents the air cleaner cover 173 from shifting in the vehicle body width direction with respect to the upper waterproof flap 203.

Since the protrusion 173c can slide in the groove 203c, the upper waterproof flap 203 is interposed between the fender 207 and the air cleaner cover 173 in both the steady state shown in FIG. 1 and the closest approach shown in FIG. Block by appropriately deforming. As a result, a good waterproof effect can be obtained in both the steady state shown in FIG. 1 and the closest state shown in FIG.

  Referring to FIG. 8, the air cleaner 17 includes an air cleaner body 171, an air cleaner cover 173, and a coupling seal member 175 having an H-shaped cross section that is attached between the air cleaner body 171 and the air cleaner cover 173. The air cleaner 17 composed of the air cleaner body 171 and the air cleaner cover 173 is sealed by the coupling seal member 175.

  Two flat protrusions 173 a are formed on the upper end of the air cleaner cover 173. In addition, at the upper end portion of the opening 171h of the air cleaner body 171 to which the air cleaner cover 173 is attached, two protrusions that protrude upward and then extend horizontally at a position facing the protrusion 173a of the air cleaner cover 173. 171a is formed. A fitting hole for fitting with the protruding portion 173a is formed in the horizontally extending portion of the protruding portion 171a. The air cleaner cover 173 is fixed to the air cleaner body 171 by fitting the fitting hole with the protrusion 173a of the air cleaner cover 173.

  More specifically, after the coupling seal member 175 is aligned with the opening 171 h of the air cleaner body 171, the air cleaner cover 173 is placed over the coupling seal member 175, and the opening 171 h of the air cleaner body 171 is covered with the air cleaner cover 173.

  At this time, the protrusion 173a of the air cleaner cover 173 is fitted into the fitting hole of the protrusion 171a of the air cleaner body 171 so as to push upward from below. Thereafter, the screw mounting holes 173b formed at both ends of the lower end portion of the air cleaner cover 173 are aligned with the screw holes 171b formed at both sides of the lower end portion of the air cleaner body 171. In this state, the screw 177 is screwed into the screw hole 171b from the screw mounting hole 173b as shown in FIG. 9A, for example, and the air cleaner cover 173 is fixed to the air cleaner body 171.

  Referring to FIGS. 9 to 11, the air cleaner body 171 and the air cleaner cover 173 are coupled to each other by fitting the protrusion 173a of the air cleaner cover 173 into the fitting hole of the protrusion 171a of the air cleaner body 171 as shown in FIG. After that, the screw 177 is screwed into the screw hole 171b through the screw attachment hole 173b at the lower end portions of the both, so that the air cleaner cover 173 can be attached to cover the opening 171h of the air cleaner body 171.

  A purified air discharge duct 171c is attached to the side of the air cleaner body 171 opposite to the opening 171h, that is, the side opposite to the side to which the air cleaner cover 173 is attached.

The purified air is discharged from the purified air discharge duct 171c and supplied to the carburetor.

  As shown in FIG. 10, the air cleaner main body 171 is formed with a purified air discharge port 171d to which the purified air discharge duct 171c is connected and two intake ports 171e for taking in air from the outside. A partition wall 171f is formed between the purified air discharge port 171d and the intake port 171e. The partition 171f isolates the purified air discharge port 171d and the intake port 171e from each other so that the air taken in from the intake port 171e is not discharged from the purified air discharge port 171d before being purified through the filter. Yes.

  A seal 179 is provided around the opening 171h of the air cleaner body 171 and the opening end face of the partition wall 171f. A coupling seal member 175 is disposed from above the seal 179. The seal 179 further ensures the airtightness of the air cleaner 17. Note that two screw holes 171g are formed on both sides of the upper end portion of the air cleaner body 171, and two screw holes 171b are formed on both sides of the lower end portion.

  Referring to FIG. 11, the air cleaner cover 173 has two protrusions 173a formed at the upper end, screw mounting holes 173b formed at both sides of the lower end, and two screw holes 173g formed at both sides of the upper end. ing. After the screw hole 173g is aligned with the screw hole 171g of the air cleaner body 171 described above, screws (not shown) are inserted into both holes and fixed to each other with nuts. With such a configuration, the fitting by the fitting hole of the protrusion 171a of the air cleaner body 171 and the protrusion 173a of the air cleaner cover 173 is more firmly fixed, and the air cleaner cover 173 is fixed to the opening 171h of the air cleaner body 171. Can be attached securely.

  Referring to FIG. 12, as described above, in the air cleaner 17, the protrusion 173 a at the upper end of the air cleaner cover 173 is fitted into the fitting hole of the protrusion 171 a formed at the upper end of the air cleaner body 171. Thus, it is understood that the air cleaner cover 173 is coupled to the air cleaner body 171. Further, the screw 177 inserted into the screw mounting hole 173b at the lower end of the air cleaner 17 is screwed into the screw hole 171b, so that the air cleaner body 171 and the air cleaner cover 173 are securely fixed. A purified air discharge duct 171c is connected to a purified air discharge port 171d formed in the air cleaner body 171.

  A filter 178 for purifying air is detachably attached to the opening 171h of the air cleaner body 171 to which the air cleaner cover 173 is coupled. An air cleaner cover 173 is attached to the outside (rear side) of the filter 178. The external air taken in from the air inlet 171e of the air cleaner body 171 reaches the filter 178 after passing through the bulging portion S of the air cleaner cover 173, and the air is purified by the filter 178. The purified air is supplied to a carburetor (not shown) through the purified air discharge duct 171c.

  Referring to FIG. 13, the engine 13 and the air cleaner 17 are formed smaller in the left-right direction than in the prior art so that they can be arranged in the pair of left and right side frames 9a, 9b.

  Referring to FIG. 3, according to the present embodiment, the air cleaner 17 is disposed above the crankcase 13 a of the engine 13. Therefore, in order to prevent the air warmed by the engine 13 from entering the air inlet 171e of the air cleaner body 171, as shown in FIGS. 13 and 14, rubber or the like between the upper portion of the engine 13 and the air cleaner 17, For example, a heat insulating member 401 formed of nitrile rubber is provided. The air cleaner intake port includes not only the air intake port 171e formed in the air cleaner main body 171 but also a front end opening of the duct when a duct or the like is connected to the air intake port 171e.

  Referring to FIG. 14, one end (front end) of the heat insulating member 401 is disposed near the engine 13 of the air cleaner body 171, and the other end (rear end) is at least an air inlet 171 e of the air cleaner 17 and a belt chamber air inlet described below. It extends to the rear of 233a and is disposed below the cell motor 205 so as to be pressed and fixed by the cell motor 205 behind the engine 13. The heat insulating member 401 has a width corresponding to a flat portion inside the crankcase.

  13 to 15, a belt chamber 231 provided in the swing type power unit 11 and incorporating a transmission device for transmitting the driving force of the engine to the rear wheels, and a belt chamber 231 connected to the belt chamber 231. A belt chamber intake duct 233 connected to the belt chamber 231 so as to introduce and introduce air for cooling the inside, and a belt chamber intake port 233a are shown. Extending between the engine 13 and the belt chamber intake port 233a so that the air warmed from the engine 13 does not enter the belt chamber intake port 233a into which the air to the belt chamber 231 is taken in, and in the vicinity of the lower portion of the belt chamber intake port 233a Is disposed so as to cover the engine 13 from the engine 13.

  Note that a transmission case 15 (see FIG. 1) in which a belt chamber 231 incorporating a transmission device is disposed extends rearward from the side of the crankcase 13 a of the engine 13. The belt chamber intake duct 233 to the belt chamber 231 is disposed in a space defined by the side frame 9a, the air cleaner 17, and the engine 13 when viewed from the side of the vehicle on which the transmission is disposed.

  That is, referring to FIG. 14, the intake port 171e and the belt chamber intake port 233a of the air cleaner 17 are disposed inside the side cover 39, above the engine 13 and in front of the air cleaner 17, and in the vehicle width direction. They are spaced apart. The air cleaner 17 has an intake port 171e and a belt chamber intake port 233a that are offset in the vertical direction, and either one is formed in a different direction.

  Referring to FIG. 15, the heat insulating member 401 is disposed in a space between the engine 13 and the air cleaner 17 in the vertical direction, and the outside air heated by the heat generated by the engine 13 does not enter the air inlet 171 e of the air cleaner 17. It is like that.

Further, the width L2 of the heat insulating member 41 is formed to be smaller than the width L1 of the air cleaner 17, and is disposed inside the width L1 of the air cleaner 17 and opens toward the inside of the vehicle body. It extends to the lower vicinity of 233a. With the configuration and arrangement of the heat insulating member 41 as described above, the outside air heated by the engine 13 in the belt chamber 231 is prevented from entering the air cleaner 17.

  The air inlet 171e of the air cleaner 17 and the belt chamber inlet 233a of the belt chamber 231 are disposed substantially symmetrically with respect to the vehicle body axis above the engine 13 insulated by the heat insulating member 401. With such an arrangement, the air above the engine 13 is distributed to the left and right with respect to the vehicle body axis and is equally taken into the intake ports 171e and 233a.

  Referring to FIG. 16, in the belt chamber 231, the air taken in at the belt chamber intake port 233 a passes through the belt chamber intake duct 233 and is further purified by the belt chamber air cleaner 234 and supplied. An element 234 a is provided in the belt chamber 231 air cleaner 234. The belt chamber intake port 233a is formed of an elastic member such as rubber, for example, and can cope with the swing of the swing type power unit 11 in the vertical direction. Note that the entire belt chamber intake duct 233 may be integrally formed of, for example, plastic.

  In addition, although the said embodiment demonstrated the case where it applied to a scooter type motorcycle, this invention is not limited to this, It can apply to all the straddle type vehicles.

  As described above, according to the present invention, the air cleaner is disposed above the engine, and the bottom surface of the object storage section below the seat and the top surface of the air cleaner are formed in substantially the same shape. In movement, they approach each other at a substantially constant interval. Therefore, by disposing the air cleaner above the engine, it is possible to make the vehicle body slender, and it is possible to suppress the seat height and secure the capacity of the object storage portion and the air cleaner.

  According to the present invention, the air cleaner can be divided into front and rear portions, and the rear portion of the air cleaner is exposed below the lower edge of the cover. For this reason, it is possible to easily replace the air cleaner filter. In addition, since the rear part of the power unit is exposed, the vehicle body can be made thinner.

  Further, according to the present invention, the air cleaner is disposed above the engine, and the air cleaner intake port and the transmission device intake port are provided inside the cover above the engine and in front of the air cleaner, so that the cover, the engine, Since it is disposed in the space surrounded by the air cleaner, it is possible to make the vehicle body slender and to prevent the dust from entering the engine and the transmission device.

  According to the present invention, at least a part of the engine and the air cleaner is narrower than the pair of left and right frames, and is supported so as to be positioned between the frames when the engine and the air cleaner swing. For this reason, the width direction and the front-rear direction of the vehicle can be made compact while suppressing the seat height.

  Further, according to the present invention, the intake duct of the transmission can be made simple and the vehicle width direction and front-rear direction can be made compact.

  Furthermore, according to the present invention, since the air cleaner intake and the transmission intake are separated in the left-right direction, interference between the intakes of each other can be suppressed.

  According to the present invention, since the intake port of the air cleaner and the intake port of the transmission are biased in the vertical direction, it is possible to suppress interference between the intakes of each other.

  In addition, according to the present invention, since one of the air cleaner inlet and the transmission inlet is formed in a different direction, it is possible to suppress mutual interference between the intake air.

  Furthermore, according to the present invention, the heat insulating member is disposed between the engine and the air cleaner so that the front end is located closer to the front of the engine and the rear end extends to the rear than the air cleaner and the intake port of the transmission. Therefore, it is possible to suppress the air warmed by the heat of the engine from being sucked into the air cleaner, and it is possible to suppress a decrease in engine performance.

  According to the present invention, the lower waterproof flap provided on the lower side of the air cleaner is bent so that the upper side is bent toward the rear wheel and the lower part is suspended so as to cover the engine. Entering the engine can be prevented accurately. The upper waterproof flap provided on the upper side of the air cleaner is curved when the power unit swings downward so that the lower side contacts the upper side of the rear side of the air cleaner. Is properly prevented.

  Further, according to the present invention, the lower waterproof flap and the upper waterproof flap are fixed to the vehicle body frame by a plurality of mounting protrusions formed protruding from both flaps. Therefore, both the flaps can be fixed very simply by simply fitting the plurality of mounting protrusions into the mounting holes of the vehicle body frame, thereby improving the working efficiency and improving the economy.

Claims (14)

A space that divides the space downward, and a sheet in which the space is covered with a cover;
A power unit including an engine and a rear wheel that swings up and down in the space;
A vehicle body frame that supports the power unit;
An object container disposed on the lower side of the seat;
An air cleaner having an intake port for taking in air and swinging with the power unit;
Comprising
The engine is arranged in front of the rear wheel,
The air cleaner is disposed above the engine inside of the cover,
When the air cleaner is swung as the power unit swings upward, at least a part of the bottom surface of the object container and at least a part of the top surface of the air cleaner face each other in a substantially parallel state. So that the shape of the bottom surface of the object storage portion and the top surface of the air cleaner is formed,
The vehicle body frame has a pair of left and right frames arranged inside the cover ,
The width in the left-right direction of the air cleaner is formed such that at least a part thereof is narrower than the distance in the left-right direction of the pair of left and right frames,
The power unit, when the swing of the power unit and the air cleaner, and at least a part of the air cleaner is supported on the body frame so as to be positioned between the pair of left and right frames straddle Type vehicle . A straddle-type vehicle according to claim 1,
The air cleaner includes a front portion and a rear portion that can be divided in the front-rear direction, and includes a filter therein, and the cover is formed so that a rear portion of the air cleaner is exposed below a lower edge thereof.
The straddle-type vehicle , wherein the front part of the air cleaner is connected to each other by a connection part for connecting the engine and the front part of the air cleaner. A sheet that defines a lower space and is covered with a cover;
A power unit including an engine and a rear wheel that swings up and down in the space;
A vehicle body frame that supports the power unit;
An air cleaner having an air intake for taking in air;
The power unit has a transmission device that extends in the front-rear direction and has a suction port that takes in air for transmitting the driving force of the engine to the rear wheels and cooling the inside thereof.
A straddle-type vehicle , wherein substantially the entire air inlet of the air cleaner and the air inlet of the transmission device are disposed inside the cover and above the engine and in front of the air cleaner. A straddle-type vehicle according to claim 3,
The vehicle body frame further includes a pair of left and right frames, and the width of the engine and the air cleaner is formed such that at least a part thereof is narrower than the width of the pair of left and right frames,
The power unit, a straddle-type vehicle at least a portion of the engine and the air cleaner at the time of swinging, characterized in that it is supported on the vehicle body frame so as to be positioned between the pair of left and right frames . A straddle-type vehicle according to claim 3,
The vehicle body frame further includes a pair of left and right frames,
The air cleaner is disposed above the crankcase of the engine,
The transduction device is extended rearward from the side of the crankcase of the engine,
The engine, the disposed between the pair of frames, with the intake port of the transduction device is formed at one end, an intake duct whose other end is connected to the transduction device, arranged transfer our device A straddle-type vehicle, which is disposed in a space formed by the body frame, the air cleaner, and the engine when viewed from the side of the vehicle on the side of the vehicle . A straddle-type vehicle according to claim 4,
The air cleaner is disposed above the crankcase of the engine,
The transduction device is extended rearward from the side of the crankcase of the engine,
The engine, the disposed between the pair of frames, with the intake port of the transduction device is formed at one end, an intake duct whose other end is connected to the transduction device, arranged transfer our device A straddle-type vehicle, which is disposed in a space formed by the body frame, the air cleaner, and the engine when viewed from the side of the vehicle on the side of the vehicle . A straddle-type vehicle according to any one of claims 3 to 6 ,
Straddle-type vehicle, wherein the inlet of the transduction device and the intake port of the air cleaner is arranged at a distance from each other in the vehicle width direction. A straddle-type vehicle according to any one of claims 3 to 7 ,
Straddle-type vehicle to the air inlet of the air cleaner and the intake port of the transduction device, characterized in that in the vertical direction are arranged offset to each other. A straddle-type vehicle according to any one of claims 3 to 8 ,
Straddle-type vehicle, wherein the air inlet of the air inlet and the transduction device of the air cleaner are oriented in different directions. A straddle-type vehicle according to any one of claims 3 to 9 ,
Tip is disposed between the engine and the air cleaner so as to face the direction of the engine, provided with a heat insulating member rear end that extends to the rear from the air inlet of the intake port and the transduction device of the air cleaner A straddle-type vehicle characterized by The straddle-type vehicle according to any one of claims 1 to 10 , further comprising:
A lower waterproof flap attached to the lower side of the air cleaner so as to be close to the lower side of the air cleaner and bend so that the upper part is bent to the rear wheel side and the lower part is located behind the engine;
An upper waterproof flap provided on the upper side of the air cleaner so that the upper part is attached to the vehicle body frame and the lower part abuts on the rear part of the air cleaner and curves when the power unit swings upward;
A straddle-type vehicle characterized by comprising: The straddle-type vehicle according to claim 11 , further comprising:
A narrow-diameter portion that extends from one end to the other end, a trapezoidal flange that is provided integrally with the thin-diameter portion and has a base larger than the diameter of the thin-diameter portion, and the thin-diameter portion of the flange A mounting protrusion composed of a cylindrical portion provided integrally with the opposite end face;
The mounting protrusion is formed of an elastic member,
The mounting protrusion is erected from the upper part of the lower waterproof flap and the upper waterproof flap, and the mounting protrusion fits into the mounting hole of the vehicle body frame, so that the vehicle body frame has the upper waterproof flap and A straddle-type vehicle , wherein a lower waterproof flap is fixed. A straddle-type vehicle according to claim 10 or 11,
The straddle-type vehicle, wherein the upper waterproof flap is attached to the vehicle body frame via a fender.   The straddle-type vehicle according to claim 1, wherein the intake port is disposed in front of the air cleaner.

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