JP2001171585A - Scooter type motorcycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a scooter type motorcycle realizing a simplification and compact of an engine and a reduction of weight and cost. SOLUTION: In the scooter type motorcycle 1, a car body frame 2 and a car body cover 14 disposed between a head pipe 3 for steerably supporting a front wheel to a right and left direction and a driving seat 13 for seating a passenger are downwardly curved to an approximately U shape to form a foot placement space 15 extending in a width direction of a car body. An engine 7 is fixed to the car body frame 2 and a transmission unit 8 for retaining a rear wheel 11 is disposed at a rear side of the engine 7. Thereby, the transmission unit 8 is swingably and pivotally supported to the car body frame 2. The engine 7 has a crank case 20 divided to two vertical parts. A balancer shaft 44, a crank shaft 25, a drive shaft 50 and a driven shaft 52 are disposed on an abutted surface of the crank case 20 on a horizontal straight line in the order from a front portion.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a scooter type motorcycle.

[0002]

2. Description of the Related Art In recent years, it has been difficult to apply a conventional method of attaching a swing-type engine unit, which integrates an engine and a power transmission unit, to a vehicle body so that the scooter-type motorcycle can be swingably mounted on the vehicle body due to the enlargement of the vehicle body and the engine. It is becoming. The reason for this is that as the size of the engine increases, the length of the engine unit increases, the overall length of the vehicle increases, and the center of gravity of the vehicle shifts toward the rear. Is reduced.

[0003] In recent years, there has been proposed an engine in which the engine body is fixed to the vehicle body and only the power transmission portion is swingably attached to the vehicle body so that the engine body can be arranged closer to the front of the vehicle body (for example, see Japanese Patent Application Laid-Open No. 11-111). 129969).

[0004]

However, in the scooter type motorcycle, the front of the driver's seat is largely downward and substantially U-shaped.
Since it has a unique external shape that forms a foot space that extends in the width direction of the vehicle body by being curved in the shape of a letter, if the engine body is arranged near the front of the vehicle body, there is a possibility that the engine body will interfere with the foot space.

[0005] In particular, when cylinders are arranged in a parallel multi-cylinder configuration as the size of the engine increases, the cylinders interfere with the rider's footrest floor formed at the bottom of the foot space for the driver to put his / her feet on. In addition to affecting the feeling and the maneuverability, there is a possibility that the front projection area increases and the air resistance increases.

Further, when the engine body is disposed near the front of the vehicle body, the arrangement of the intake system becomes complicated, and the intake passage becomes non-linear, which hinders an increase in output.

On the other hand, the engine is provided with many shafts in addition to the crankshaft inside. For example, an engine having a V-belt type automatic transmission is provided with a drive shaft provided with a drive pulley and a driven shaft provided with a driven pulley in addition to a crankshaft. The engine having the balancer device is provided with a balancer shaft provided with a balancer weight in addition to the crankshaft. In order to provide many of these shafts in an engine arranged near the front of the vehicle body, it is necessary to divide the engine crankcase into three parts, which leads to an increase in cost.

The present invention has been made in view of the above circumstances, and has as its object to provide a scooter-type motorcycle in which the engine is simplified and compact, and the weight and cost are reduced.

Another object of the present invention is to provide a scooter-type motorcycle with improved running stability.

[0010]

A scooter-type motorcycle according to the present invention has a head pipe and an occupant for supporting the front wheels to be steerable left and right. In a scooter type motorcycle in which a vehicle body frame and a vehicle body cover between a seat and a driving seat are curved downward in a substantially U shape to form a foot space extending in a width direction of the vehicle body, an engine is fixed to the vehicle body frame. A transmission unit for holding a rear wheel is disposed at the rear of the engine and pivotably attached to the vehicle body frame. The engine has a crankcase which is divided into upper and lower parts. A balancer shaft, a crankshaft, a drive shaft, and a driven shaft are arranged on a substantially horizontal straight line in this order from the front.

In order to solve the above-described problem, the crankshaft is arranged rearward from a front end of the operation seat.

Further, in order to solve the above-mentioned problems,
According to a third aspect of the present invention, a cylinder assembly is erected substantially upward on the crankcase, and an air cleaner is arranged behind the cylinder assembly and in a space above the crankcase.

Furthermore, in order to solve the above-mentioned problem, the cylinder shaft of the cylinder assembly is inclined rearward as described in claim 4.

Then, in order to solve the above-mentioned problem,
According to a fifth aspect of the present invention, the shock absorber supporting the transmission unit is disposed above the rear portion of the engine in a side view and above the transmission unit in a plan view.

In order to solve the above-mentioned problem, the transmission unit is arranged to be offset to one side from a center line extending in the front-rear direction of the vehicle body, and the muffler and the battery are arranged. The battery is disposed in a space surrounded by the air cleaner, the transmission unit, the muffler, and the rear wheel in a side view, while being disposed on the opposite side of the transmission unit with the center line interposed therebetween. It is.

Further, in order to solve the above-mentioned problems,
As described in claim 7, a radiator is disposed between the front wheel and the engine, and a cooling air intake is formed immediately before the radiator of the vehicle body cover, and a lower portion of an arrangement immediately above the radiator is formed. The cooling air guide portion is formed by the bottom of the vehicle body cover facing the cooling air intake.

[0017]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a left side view showing an example of a scooter type motorcycle to which the present invention is applied. FIG. 2 is a left side view showing the internal structure of the motorcycle. As shown in FIGS. 1 and 2, the scooter type motorcycle 1 has a body frame 2, and a head pipe 3 is provided at a front end of the body frame 2. The head pipe 3 is provided with a front fork 5 and a handlebar 6 for rotatably supporting the front wheel 4.
Is steerably pivotable left and right.

An engine 7 is provided at the lower center of the body frame 2.
Is mounted. A transmission unit 8 is disposed at the rear of the engine 7, and a front portion of the transmission unit 8 is pivotally connected to a pivot unit 9 provided on the vehicle body frame 2 so as to freely swing.

The transmission unit 8 also serves as a swing arm, and is elastically and swingably supported by the body frame 2 by the shock absorber 10. Then, a rear wheel 11 which is a driving wheel is held at a rear end of the transmission unit 8.

Above the rear wheel 11, an article storage chamber 12, which is a storage container for helmets, luggage, tools, and the like (not shown), is provided. Further, an operation seat 13 for seating an occupant, which also serves as a lid of the article storage chamber 12, is installed above the article storage chamber 12 so as to be openable and closable. The body frame 2 is covered with a body cover 14 which is a synthetic resin molded product.

The vehicle body frame 2 and the vehicle body cover 14 between the head pipe 3 and the front part of the driving seat 13 are curved downward substantially in a substantially U-shape to form a foot space 15 extending in the width direction of the vehicle body. A low-floor rider footrest floor 16 on which a driver as a rider rests his / her feet is formed on the left and right sides of the bottom. Behind the left and right rider footrest floors 16, there are formed pillion rider footrest floors 17 on which other passengers, ie, passengers, rest their feet.
Further, a tunnel shape 18 is formed at the center of the rider's footrest floor 16 so as to extend forward and backward and project upward. Furthermore, the vehicle body cover 1 in front of the foot space 15
A fuel tank 19 is disposed in the space 4.

FIG. 3 is a schematic plan view of the motorcycle 1 shown in FIGS. 1 and 2, wherein the engine 7 and the transmission unit 8 are shown in a plan sectional view along the line III-III in FIG. This is indicated by a line (two-dot chain line). 4 is an enlarged vertical sectional view of the engine 7, and FIG. 5 is an enlarged plan sectional view of the engine 7 and the transmission unit 8.

As shown in FIGS. 2 to 5, the engine 7 mainly includes an upper case 20a and a lower case 20b below the pillion rider's footrest floor 17.
And a cylinder assembly 21 erected substantially upward on the upper case 20a and fixed to the vehicle body frame 2.

The engine 7 is of a known type in which a reciprocating motion of a piston 23 in a cylinder 22 constituting a cylinder assembly 21 causes a crankshaft 25 extending in a vehicle width direction in a crankcase 20 through a connecting rod 24 to rotate. is there. The engine 7 mounted on the motorcycle 1 is of a water-cooled type, and a radiator 26 for cooling the cooling water for cooling the engine 7 is disposed in the vehicle body cover 14 between the front wheel 4 and the engine 7.

Further, the radiator 26 of the vehicle body cover 14
Immediately before the cooling air intake 27 is formed, the radiator 2
6, the fuel tank 1 in this embodiment.
9 and the body cover 1 facing the cooling air inlet 27
The bottom of 4 forms a cooling air guide section 28.

The engine 7 used in the present embodiment is a so-called parallel two-cylinder engine in which two cylinders 22 sharing one crankshaft 25 are arranged side by side. The two cylinders 22 have their cylinder shafts 29 inclined slightly rearward.

An intake port 31 and an exhaust port 32 are formed in the cylinder head 30 on the cylinder 22. The intake port 31 is provided on the rear side of the cylinder head 30,
For example, an intake pipe 34 having a fuel injection device 33 is connected. Further, an air cleaner 35 is disposed in a space behind the cylinder assembly 21 and above the crankcase 20, and the air cleaner 35 is connected to an upstream side of the intake pipe 34.

On the other hand, the exhaust port 32 is connected to the cylinder head 3
0, and the base end of the exhaust pipe 36 is connected. The exhaust pipe 36 goes around the front of the engine 7 and
Is guided to the lower part of the vehicle and extends rearward. further,
A muffler 37 is connected to a downstream end of the exhaust pipe 36. The muffler 37 is arranged to be offset to one side from a center line 38 extending in the front-rear direction of the vehicle body, in this embodiment, to the right in the traveling direction (see FIG. 3).

The crankshaft 25 of the engine 7 is arranged rearward from the front end of the driving seat 13.
A starter motor 39 serving as an engine starting device is connected to one end of the crankshaft 25, and a charging device 40 is provided at the other end.

A balancer chamber 41 is formed at the front of the crankcase 20, and a balancer device 42 is disposed in the balancer chamber 41. The balancer device 42 has a balancer shaft 44 provided with a balancer weight 43. The balancer shaft 44 is disposed in front of the crankshaft 25 and parallel to the crankshaft 25.

A primary drive gear 45 serving also as a balancer drive gear is provided at one end of the crankshaft 25, and a balancer driven gear 46 is provided at one end of the balancer shaft 44. These balancer gears 45, 46 are operatively connected. The rotation of the crankshaft 25 is transmitted to the balancer shaft 44.

On the other hand, a transmission chamber 47 is formed at the rear of the crankcase 20, and a V
A belt-type automatic transmission 48 is provided. The transmission 48 includes a drive shaft 5 having a drive pulley 49.
0 and a driven shaft 5 having a driven pulley 51
2, the drive shaft 50 is arranged behind the crankshaft 25 in parallel with the crankshaft 25, and the driven shaft 52 is arranged behind the drive shaft 50 in parallel with the drive shaft 50.

The drive shaft 50 and the driven shaft 52 are rotatably supported in the crankcase 20 by bearings B.
The inside of the transmission chamber 47 is kept liquid-tight by an oil seal S provided at 0,52.

As described above, the primary drive gear 45 is provided at one end of the crankshaft 25, and the primary driven gear 53 is provided at one end of the drive shaft 50.
53 is operatively connected to transmit the rotation of the crankshaft 25 to the drive shaft 50.

A V-belt 54 is stretched between the drive pulley 49 and the driven pulley 51, and the rotational driving force of the engine 7 is transmitted to the driven pulley 51 via the V-belt 54.

Above the driven shaft 52, a secondary shaft 55 rotatably supported by a bearing B is disposed in parallel with the driven shaft 52. A secondary drive gear 56 is provided at one end of the driven shaft 52, and a secondary driven gear 57 is provided at one end of the secondary shaft 55. These secondary gears 56, 57 are operatively connected to each other so that the rotational driving force of the engine 7 is secondary. The power is transmitted to the shaft 55.

The rotational driving force of the engine 7 transmitted to the secondary shaft 55 is transmitted to the axle shaft 59 of the rear wheel 11 via the propeller shaft 58. The propeller shaft 58 is rotatably supported by a bearing B and housed in the transmission unit 8. The transmission unit 8 is located on one side from a center line 38 extending in the front-rear direction of the vehicle body, and on the opposite side to the muffler 37 in the present embodiment. (See FIG. 3). The propeller shaft 58 is divided into a front shaft 58a, an intermediate shaft 58b, and a rear shaft 58c. The front shaft 58a is disposed above the transmission chamber 47 near the end of the secondary shaft 55.

The rotation of the secondary shaft 55 is converted by 90 ° through the bevel gear 60 and transmitted to the front shaft 58a. On the other hand, the intermediate shaft 5 in the transmission unit 8
A clutch mechanism (not shown) is disposed at a connection portion between the rear shaft 8c and the rear shaft 58c. As this clutch mechanism, for example, an electromagnetically controlled wet multi-plate clutch mechanism or a centrifugal clutch mechanism is used.

Although not shown in detail, the electromagnetically controlled wet-type multi-plate clutch mechanism is a pilot clutch which can be electrically intermittently controlled and has a small transmission torque, and can transmit a large torque as compared with the pilot clutch. The main clutch and the pilot clutch are connected, and a rotational phase difference is generated between the main clutch and the pilot clutch, and this rotational phase difference is converted into the pressing force of the pressure plate of the main clutch by the cam mechanism provided on the pilot clutch. It is amplified while being transmitted, and enables transmission of a large torque. Since the electromagnetically controlled pilot clutch can be formed in a small size, the response of the clutch can be improved, and at the same time, the size of the main clutch can be reduced, which leads to a reduction in the size of the entire engine 7.

The front shaft 58a of the propeller shaft 58 and the intermediate shaft 58b are connected by, for example, a universal joint 61. Even if the transmission unit 8 swings up and down around the pivot 9, the transmission of the torque of the engine 7 is achieved. Do not disturb.

Further, the axle shaft 59 rotatably supported by the bearing B is disposed near the rear end of the rear shaft 58c, and the rotation of the propeller shaft 58 is converted by 90 ° via the bevel gear 62, so that the axle shaft 59.

As shown in FIGS. 2 and 4, the balancer shaft 44, the crankshaft 25, the drive shaft 50, and the driven shaft 52 are generally arranged in the above order from the front on the mating surface of the upper case 20a and the lower case 20b. They are arranged on a horizontal straight line.

As described above, the transmission unit 8 containing the propeller shaft 58 and the clutch mechanism also serves as a swing arm, and is elastically and swingably supported by the vehicle body frame 2 by the shock absorber 10. The shock absorber 10 includes a V-belt type automatic transmission 4 disposed at the rear of the engine 7 in a side view.
8 and above the transmission unit 8 in plan view. In addition, the shock absorber 10 is provided with the primary gears 45 and 53 or the secondary gears 56 and 57 in side view.
May be above.

In the scooter type motorcycle 1 according to the present invention, when the charging device 40 is not working such as when the engine 7 is started or stopped, the electric motor is electrically connected to the starter motor 39 and a lighting device (not shown). Is provided. Similar to the muffler 37, the battery 63 is offset from one side of a center line 38 extending in the front-rear direction of the vehicle body, and in this embodiment, is offset to the right side opposite to the transmission unit 8 in the traveling direction (see FIG. 3)
The air cleaner 35, the transmission unit 8, the muffler 37, and the rear wheel 11 are arranged in a space surrounded by the side view.

Next, the operation of the present embodiment will be described.

The balancer shaft 44, the crankshaft 25, the drive shaft 50, and the driven shaft 52 are arranged on the substantially horizontal straight line in this order from the front in the crankcase 20, so that the crankcase 20 is connected to the upper case 20a and the lower case 20a. 20b. As a result, the structure of the crankcase 20 is simplified, the size is reduced, and the weight and cost can be reduced.

Further, by disposing the crankshaft 25 rearward from the front end of the driving seat 13 and disposing the balancer shaft 44 in front of the crankshaft 25, the planar shape of the engine 7 becomes tapered. As a result, the width of the tunnel shape 18 at the center of the rider's footrest floor 16 can be reduced, and the riding feeling is improved, and the front projection area of the vehicle body cover 14 can be reduced.

Further, since the above-mentioned shafts are heavy, if these heavy objects are arranged on the mating surface of the upper case 20a and the lower case 20b below the pillion rider footrest floor 17, the center of gravity of the vehicle can be reduced. And the shape width of the pillion rider's footrest floor 17 can be reduced, so that the riding feeling is improved and the front projection area of the vehicle body cover 14 can be reduced.

On the other hand, the air cleaner 35 can be disposed in the space above the crankcase 20 behind the cylinder assembly 21 by arranging the cylinder assembly 21 on the upper case 20a substantially upward. As a result, the intake pipe 34 connecting the intake port 31 of the cylinder head 30 and the air cleaner 35 can be linearly arranged, and the intake resistance can be reduced and the output of the engine 7 can be increased.

Also, by inclining the cylinder shaft 29 of the cylinder assembly 21 slightly rearward,
The crankshaft 25 can be arranged further forward. As a result, the load shared by the front wheels 4 increases, and steering characteristics and running stability increase. Further, the length of the power transmission unit 8 in which the crankshaft 25 is disposed closer to the front can be increased. as a result,
The shock absorbing performance of the rear wheel 11 is improved, and the riding feeling and running stability are improved.

In the present invention, a shock absorber 10 for elastically and oscillatingly supporting the transmission unit 8 is provided at the rear of the engine 7 in a side view.
It is arranged above the belt type automatic transmission 48 (or above the primary gears 45, 53 and secondary gears 56, 57) and above the transmission unit 8 in plan view.

For example, if the shock absorber 10 is disposed below the engine 7, the shock absorber 10
A special protector or the like is required in consideration of a case where the vehicle comes into contact with an obstacle on the road. In addition, in order to secure the minimum ground clearance, the shock absorber 10 must be arranged to a certain degree above, and as a result, there arises a problem that the whole engine 7 moves upward and the position of the center of gravity becomes high.

However, in the present invention, since the shock absorber 10 is disposed above the engine 7, the position of the center of gravity of the engine 7 does not increase, and a dedicated protector is not required.

On the other hand, the transmission unit 8 is arranged to be offset to one side from a center line 38 extending in the front-rear direction of the vehicle body, and the muffler 37 and the battery 63 are arranged on the opposite side of the transmission unit 8 with the center line 38 interposed therebetween. As a result, the left and right weights of the vehicle body are balanced and the running stability is improved. Also,
By arranging the battery 63 in a space surrounded by the air cleaner 35, the transmission unit 8, the muffler 37, and the rear wheel 11 in a side view, the space can be effectively used and the body cover 14 is not required to be enlarged. To prevent

Further, a radiator 26 is arranged between the front wheel 4 and the engine 7, and a cooling air intake 27 is formed immediately before the radiator 26 of the vehicle body cover 14, so that an arrangement just above the radiator 26, in this embodiment, Is formed by a lower portion of the fuel tank 19 and a bottom portion of the vehicle body cover 14 facing the inlet 27 of the cooling air. As the cooling performance of the engine 7 is improved, a part of the traveling wind is directly guided to the engine 7, and the cooling performance of the engine 7 is further improved.

[0057]

As described above, according to the scooter type motorcycle according to the present invention, the vehicle body frame and the vehicle body cover are provided between the head pipe for supporting the front wheels to be steerable left and right and the driving seat for seating the occupant. A scooter-type motorcycle having a foot space extending in the width direction of the vehicle body by bending the transmission unit downwardly into a substantially U-shape, wherein a transmission unit for fixing an engine to the vehicle body frame and holding a rear wheel is provided at a rear portion of the engine. The engine has a crankcase that is vertically divided into two parts, and the balancer shaft, the crankshaft, the drive shaft, and the Since the driven shaft is arranged on a substantially horizontal straight line, the structure of the crankcase is simplified and the engine Transfected reduction, thereby to reduce the weight and cost.

Further, since the crankshaft is arranged rearward from the front end of the driving seat, the plane shape of the engine is tapered, and the width of the tunnel at the lower part of the foot space is reduced, so that the riding feeling is improved. The front projection area of the vehicle body cover can be reduced.

Further, a cylinder assembly is erected substantially upward on the crankcase, and an air cleaner is disposed in a space behind the cylinder assembly and above the crankcase, so that an intake pipe connecting the engine and the air cleaner is provided. It can be arranged linearly, and the output of the engine can be increased.

Further, since the cylinder axis of the cylinder assembly is inclined rearward, the crankshaft can be arranged closer to the front, and the load shared by the front wheels increases, so that steering performance and running stability are improved.

Since the shock absorber supporting the transmission unit is disposed above the rear portion of the engine in a side view and above the transmission unit in a plan view, a dedicated protector for the shock absorber is not required, and the center of gravity of the engine is eliminated. Position can be kept low.

Further, the transmission unit is arranged to be offset to one side from a center line extending in the front-rear direction of the vehicle body, and the muffler and the battery are arranged on the opposite side of the transmission unit with respect to the center line. The air cleaner, the conduction unit, and the battery in a side view.
Since it is arranged in the space surrounded by the muffler and the rear wheel, the left and right weights of the vehicle body are balanced and running stability is improved, and the space can be effectively used, and unnecessary enlargement of the vehicle body cover is prevented. .

Further, a radiator is disposed between the front wheel and the engine, and a cooling air intake is formed immediately before the radiator on the vehicle body cover, and a lower portion of the arrangement immediately above the radiator and the cooling air are formed. Since the cooling air guide section is formed by the bottom of the vehicle body cover facing the intake of the engine, the engine cooling performance can be improved.

[Brief description of the drawings]

FIG. 1 is a left side view showing an embodiment of a scooter type motorcycle according to the present invention.

FIG. 2 is a left side view showing the internal structure of the motorcycle shown in FIG.

FIG. 3 is a schematic plan view of the motorcycle shown in FIGS. 1 and 2 (the engine and the transmission unit are shown in FIG.
Plan view along the line).

FIG. 4 is an enlarged vertical sectional view of the engine.

FIG. 5 is an enlarged plan sectional view of the engine and the transmission unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Scooter type motorcycle 2 Body frame 3 Head pipe 4 Front wheel 7 Engine 8 Transmission unit 10 Shock absorber 11 Rear wheel 13 Operation seat 14 Body cover 15 Foot space 19 Fuel tank (arranged immediately above radiator) 20 Crank case 21 Cylinder assembly Reference Signs List 25 crankshaft 26 radiator 27 cooling air intake 28 cooling air guide part 29 cylinder shaft 35 air cleaner 37 muffler 38 center line extending in front and rear of vehicle body 44 balancer shaft 50 drive shaft 52 driven shaft 63 battery

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B62K 25/04 B62K 25/04 B62M 17/00 B62M 17/00 A

Claims (7)

[Claims] A vehicle body frame and a vehicle body cover between a head pipe that supports a front wheel to be steerable left and right and a driver seat for seating an occupant are bent downward in a substantially U-shape to extend in the width direction of the vehicle body. In the scooter type motorcycle in which the through space is formed, an engine 7 is fixed to the vehicle body frame 2, and a transmission unit 8 for holding a rear wheel 11 is disposed at a rear portion of the engine 7, and swingably pivots on the vehicle body frame 2. At the same time, the engine 7 has a crankcase 20 which is divided into upper and lower parts.
A scooter-type motorcycle characterized in that a balancer shaft 44, a crankshaft 25, a drive shaft 50, and a driven shaft 52 are arranged on a substantially horizontal straight line on a mating surface in this order from the front. 2. The scooter-type motorcycle according to claim 1, wherein the crankshaft 25 is disposed rearward from a front end of the driving seat 13. 3. The air cleaner 35 according to claim 1, wherein a cylinder assembly 21 is erected substantially upward on the crankcase 20, and an air cleaner 35 is disposed in a space above the crankcase 20 behind the cylinder assembly 21. Scooter type motorcycle. 4. The scooter-type motorcycle according to claim 3, wherein the cylinder shaft 29 of the cylinder assembly 21 is inclined rearward. 5. A shock absorber 10 supporting the transmission unit 8 is positioned above a rear portion of the engine 7 in a side view.
5. The scooter type motorcycle according to claim 1, wherein the motorcycle is disposed above the transmission unit 8 in a plan view. 6. The transmission unit 8 is arranged to be offset to one side from a center line 38 extending forward and backward of the vehicle body, and the muffler 37 and the battery 63 are connected to the center line 38.
Is disposed on the opposite side of the conduction unit 8 with the
The air cleaner 35 and the battery 63 in a side view,
The transmission unit 8, the muffler 37, and the rear wheel 1
6. The device according to claim 3, wherein the device is disposed in a space surrounded by the device and the device.
The scooter type motorcycle described. 7. A radiator 26 is disposed between the front wheel 4 and the engine 7, and a cooling air intake 27 is formed immediately before the radiator 26 of the vehicle body cover 14, so that an arrangement just above the radiator 26 is provided. A cooling air guide portion (28) is formed by a lower portion of the cooling air inlet (19) and a bottom of the body cover (14) facing the cooling air inlet (27).
The scooter-type motorcycle according to 4, 5, or 6.