JP3313387B2 - Vehicle body component arrangement structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arrangement structure of an engine, a transmission, and a footrest which are vehicle body components in a vehicle.

[0002]

2. Description of the Related Art In a motorcycle, an engine and a transmission are arranged between a front wheel and a rear wheel in a vehicle width direction.
A crankshaft extending in the vehicle body width direction, and a flywheel magneto that is disposed near one end of the crankshaft on the opposite side in the vehicle body width direction and is interlocked with the one end, A transmission case, a drive shaft extending in the vehicle width direction and supported by the transmission case, a drive pulley supported by the drive shaft and capable of changing a V-belt winding diameter, There is a motor provided with a motor that changes and adjusts the winding diameter of the V-belt, and a footrest is provided on the rear side opposite to the engine in the vehicle width direction.

[0003]

The drive pulley of the transmission is linked to the crankshaft via the drive shaft. The drive shaft is larger than the crankshaft in the longitudinal direction of the vehicle body. If it is separated, the structure for interlocking the drive pulley to the crankshaft via the drive shaft becomes complicated.

[0004] Further, since the motor generates heat when driven, it is desired that the motor be effectively cooled by running wind. In addition, the motor should not interfere with the rider's feet on the footrest. It is also desired to make.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has a simple structure in which a drive pulley of a transmission is interlockedly connected to a crankshaft of an engine. Another object of the present invention is to make sure that a motor for enabling a shift of a transmission is sufficiently cooled by traveling wind, and that the motor does not interfere with a rider's foot on a footrest.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is characterized by front and rear wheels 11,16.
The engine 21 and the transmission 58 are arranged side by side in the vehicle width direction, and the engine 21 is provided with a crankshaft 43 extending in the vehicle width direction and the crankshaft 43 opposite the transmission 58 in the vehicle width direction. And a flywheel magneto 47 disposed near one end of the gearbox and operatively connected to the one end.
A drive shaft 43a extending in the vehicle width direction and supported by the transmission case 62; and a V-belt supported by the drive shaft 43a.
The engine 21 includes a drive pulley 64 capable of changing the V belt winding diameter of the V belt 67 wound around the groove 69, and a motor 82 for changing and adjusting the V belt winding diameter of the drive pulley 64. In the vehicle body component disposing structure in which the footrest 39 is disposed on the outer rear side of the transmission case 62 on the opposite side in the vehicle width direction,

The drive shaft 43a is disposed on the same axis as the crankshaft 43 and outside of the other end, and the drive shaft 43a is interlocked with the crankshaft 43.

The transmission case 62 on the opposite side of the transmission case 62 from the engine 21 in the vehicle width direction.
The motor 82 is attached to the transmission case 62 so that the motor 82 projects outward from the front outer surface of the transmission case 62 ,

The drive pulley 64 is connected to the drive shaft 43a.
Are slidably supported only in the axial direction.
A pair of drive shafts that cooperate to form the V-belt groove 69
And the drive shaft 43a in parallel with the drive shaft 43a.
Extend the gear so that it can rotate around its axis.
Gear that is supported by the gear 62 and is interlocked with the motor 82.
A drive shaft 79 is provided, and the speed change drive shaft 79 is
Bases 64a and 64b are connected to each other,
In conjunction with the rotation of the speed change drive shaft 79 by the drive of the
Thus, each of the drive faces 64 with respect to the drive shaft 43a.
a, 64b are each slid apart from each other, if
Or V-belt winding of the drive pulley 64 approaching each other.
The point is that the hanging diameter is changed .

[0010]

[Operation] The operation of the above configuration is as follows.

A drive shaft 43a of a transmission 58 is arranged on the same axis as the crankshaft 43 of the engine 21 and outside thereof, and the drive shaft 43a is connected to the crankshaft 43 in an interlocking manner. Therefore, the drive shaft 43a is connected to the crankshaft 43 in an interlocking manner with a simple configuration, as compared with the case where the drive shaft 43a is far away from the crankshaft 43 in the front-rear direction of the vehicle body.

[0012] As the above-mentioned motor 82 outward from the front outer side of the upper <br/> SL opposite side of the transmission case 62 in the vehicle width direction to the engine 21 is protruded relative to the above-mentioned transmission case 62 The motor 82 is attached to the transmission case 62.

Therefore, the motor 82 sufficiently receives the traveling wind when the vehicle travels without being disturbed by the transmission case 62.

In the above case, the engine 21 is provided with a flywheel magnet 47 disposed near one end of the crankshaft 43 and operatively connected to the one end. Since it protrudes outward from the outer side in the vehicle width direction in the direction opposite to the engine 21, the flywheel magneto 47 and the motor 82 are largely divided left and right in the vehicle width direction.

Therefore, the flywheel magneto 47
The wiring work and the maintenance work for the motor and the motor 82 are prevented from interfering with each other.

As described above, when the footrest 39 is disposed outside and behind the speed change case 62 on the opposite side of the engine 21 in the vehicle width direction, as described above,
A motor 82 projects outward from the front outer surface of the transmission case 62 on the opposite side of the engine 21 in the vehicle width direction. Therefore, the footrest 39 and the motor 82
Is likely to be located at the same place in the width direction of the car,
The motor 82 is located forward and away from the footrest 39.

The drive pulley 64 is connected to the drive shaft.
43a is slidably supported only in the axial direction.
A pair of drives forming the V-belt groove 69 in cooperation with each other
It has moving faces 64a and 64b,
The above modification is made so that it extends in parallel and is rotatable around its axis.
Supported by the speed case 62 and interlocked with the motor 82
A speed change drive shaft 79 is provided.
The drive faces 64a and 64b are connected to each other in an interlocking manner.
The rotation of the speed change drive shaft 79 by the drive of the motor 82
In conjunction therewith, each of the drive faces is moved with respect to the drive shaft 43a.
64a and 64b slide apart from each other,
Alternatively, the V-bell of the drive pulley 64 approaches
The winding diameter is changed.

For this reason, the motor 82 is driven to change.
Rotating the speed drive shaft 79 to change and adjust the V belt winding diameter
Then, the two drive faces 64a, 64b are respectively
That they are separated or brought closer together
The V belt 67 wound around the driving pulley 64
The position of the portion in the axial direction of the drive shaft 43a changes.
Is prevented.

Therefore, each time the V belt winding diameter is changed and adjusted.
The drive pulley 64 and the drive pulley 64 are driven in the axial direction of the drive shaft 43a.
When the relative position of the moving pulley 66 changes, the V-belt 67
Can be prevented from bending.
The load on the data 82 can be reduced.

[0020]

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

2 and 3, reference numeral 1 denotes a motorcycle as a vehicle, and reference numeral 2 denotes a body frame. In the drawings, the arrow Fr indicates the front of the vehicle body, and left and right refer to the width direction of the vehicle body toward the front.

The body frame 2 has a head pipe 3 at a front portion thereof. A main frame 4 extends rearward and downward from the head pipe 3 and a rear arm bracket extends further downward from the rear end of the main frame 4. 5 is extended. Below the main frame 4, a down tube 6 extends rearward and downward from the same head pipe 3, and a rear end of the down tube 6 and a lower end of the rear arm bracket 5 are connected to each other. 7 is a seat rail, and 8 is a back stay.

A front fork 10 is supported on the head pipe 3 so as to be steerable. A front wheel 11 is supported at a lower end of the front fork 10, and a handle 12 is attached to an upper end of the front fork 10.

The pivot shaft 1 is attached to the rear arm bracket 5.
4, a rear arm 15 is pivotally supported so as to be able to swing up and down, and a rear wheel 16 is supported at the swinging end of the rear arm 15. Further, a shock absorber 19 is provided between the rear end of the main frame 4 and the front and rear halfway of the rear arm 15 via a link mechanism 18.
Has been erected.

An engine 21 is supported on the body frame 2. This engine 21 has a crankcase 22 and a cylinder 23 made of an aluminum alloy. A carburetor 24 and an air cleaner 25 are connected to an intake port provided on the rear surface of the cylinder 23.

One end of an exhaust pipe 26 is connected to an exhaust port provided on the front surface of the cylinder 23. The other end of the exhaust pipe 26 once extends forward and downward from the cylinder 23, then bends to the left and further to the right, and the folded portion 27 is located on the front side of the down tube 6. I have. The folded end of the folded portion 27 extends rearward, and a silencer 28 is attached to the rear end.

A power transmission device 30 is connected to a rear portion of the crankcase 22. The power transmission device 30 has a drive chain 31 as an output unit. On the other hand, a driven wheel 32 is attached to the rear wheel 16, and a chain 33 is wound around the drive wheel 31 and the driven wheel 32. The power of the engine 21 can be transmitted to the rear wheel 16 via the power transmission device 30, the chain 33, and the like. The driving of the rear wheel 16 causes the motorcycle 1 to travel on a traveling road surface 35.

The engine 21 and the power transmission device 3
0 is supported by the body frame 2 by the pivot shaft 14 having a bolt shape and three bolts 36.
37 is a fuel tank and 38 is a seat. Reference numeral 39 denotes a pair of left and right footrests.
Are located outside and rearward on the right side of the power transmission device 30 and project outward from the lower ends of the rear arm brackets 5, respectively. And in these footrests 39,
As shown in FIG. 1, the rider on the seat 38
It is designed to carry 0.

1 and 4, the crankcase 22 includes left and right cases 41 and 42 fastened to each other.
A crankshaft 43 having an axial center extending left and right is supported by these two cases 41 and 42. 44 is a connecting rod. The crankcase 22 has a cover case 46, which covers the left side surface of the left case 41. A flywheel magneto 47 is disposed in the space between the left case 41 and the cover case 46 near the left end, which is one end of the crankshaft 43. The flywheel magnet 47 is linked to the left end of the crankshaft 43, and more specifically, the rotor 48 of the flywheel magneto 47 is supported by the left end of the crankshaft 43.

Reference numeral 50 denotes a kick type starter. The kick type starter 50 includes the left case 41 and the cover case 46.
And a kick shaft 51 supported by the shaft. A kick pedal 52 is attached to the kick shaft 51, and a spring 53 for holding the kick pedal 52 in a predetermined posture is provided. On the other hand, an engagement shaft 54 is supported on the cover case 46 coaxially with the rotor 48, and the engagement shaft 54
Is connected to the kick shaft 51 by a gear set 55.

The shaft end of the engagement shaft 54 is connected to the rotor 48
The engagement shaft 54 is normally urged by a spring 56 to release the engagement with the rotor 48. When the engine 21 is to be started, the kick pedal 52 is depressed vigorously against the spring 53. Then, this power is transmitted to the engagement shaft 54 via the kick shaft 51 and the gear set 55, and the engagement shaft 5
4 rotates. In addition, a part of the power when the kick pedal 52 is depressed, the engaging shaft 54 moves toward the rotor 48 and engages against the spring 56, whereby cranking is performed. When the depression is released, the kick pedal 52 and the engagement shaft 54 return to their original states by the springs 53 and 56.

In FIG. 1, the power transmission device 30 is provided with a transmission 5 that is arranged in parallel with the engine 21 in the vehicle width direction.
8, a clutch 59, and a reduction gear 60, and the power from the engine 21 is transmitted to the drive chain 31 in this order.

The transmission 58 will be described with reference to FIGS.

The transmission 58 is a V-belt winding mechanism 61
And a transmission case 6 having the V-belt winding mechanism 61 inside.
The transmission case 62 includes a part of the right case 42 and an extension case 4 extending rearward from the right case 42.
2a, and a speed change cover case 63 made of an aluminum alloy and covering the right side surfaces of the right case 42 and the extension case 42a.

The V-belt winding mechanism 61 will be described. A drive shaft 43a whose axis extends in the vehicle width direction is supported at the front of the transmission case 62. This drive shaft 43a
Is located on the same axis as the crankshaft 43, and
The other end of the crankshaft 43 is disposed outside the right end. The drive shaft 43a is integrally formed with the right end of the crankshaft 43 so as to be linked with the crankshaft 43, and a drive pulley 64 is supported on the drive shaft 43a. Also, the transmission case 6
An intermediate shaft 65 is supported at a rear portion in the second shaft 2.
The driven pulley 66 is supported. A V-belt 67 is wound around the driving pulley 64 and the driven pulley 66.

The drive pulley 64 has a V-belt groove 6
The V-belt winding diameter of the V-belt 67 wound around 9 can be changed. The drive pulley 64 has a pair of left and right drive faces 64a, 64b forming a V-belt groove 69 in cooperation with each other.
4b is splined so as to be slidable only in the axial direction to the drive shaft 43a. Further, the driven pulley 66 has V and a pair of left and right follower face 66a to form a belt groove 70, 66b, cooperate with each other, these driven face 66a, 66b it to the intermediate shaft 65
It is spline-fitted so that it can slide only in the axial direction.

A pair of left and right interlocking bars 71, 71 are provided on the left and right sides of the driving pulley 64 and the driven pulley 66, respectively. The middle part before and after each of these two interlocking bars 71, 71
The pivot pin 72 and the connection bar 73 are connected to each other, and each interlock bar 71 is swingable around the pivot pin 72.

The front portion of each interlock bar 71 is connected to the corresponding drive faces 64a, 64b by front connection pins 74, respectively. In this case, each drive face 64a, 6
4b is the driving shaft 43 regardless of the movement of the interlocking bar 71.
Although it is rotatable together with a, it moves together with the front part of the interlock bar 71 to the left and right.

The rear part of each interlock bar 71 is connected to the corresponding driven face 66a, 66b by a rear connection pin 75, respectively. In this case, each driven face 66
a and 66b are independent of the interlocking bar 71,
, And can move together with the front part of the interlocking bar 71 to the left and right. Reference numeral 76 denotes a tension pulley. The tension pulley 76 is pressed against the V-belt 67 by the elastic force of a spring to prevent the V-belt 67 from loosening.

A driving means 78 for swinging each of the interlocking bars 71 around the pivot pin 72 is provided. The drive means 78 extends in parallel with the drive shaft 43a and extends around its axis.
Has a speed-change driving shaft 79 which is supported on the front portion of the transmission case 62 so as to be rotatable in the upper to the speed-change driving shaft 79
The drive faces 64a and 64b are respectively linked and connected.
Have been. More specifically, the speed change drive shaft 79 includes:
A pair of left and right oppositely threaded bolts 80, 80 are keyed to be slidable in the axial direction. Then, each of the interlocking bars 7
The front ends of the screws 1 are respectively screwed to the corresponding bolts 80. Also, three springs 81 are provided to urge each of the bolts 80 so as to sandwich them from the left and right.

The transmission 58 includes the drive pulley 64
And a step motor 82 for changing and adjusting the V belt winding diameter. The transmission case 62 on the opposite side of the transmission case 62 from the engine 21 in the vehicle width direction with respect to the engine 21.
The motor 8 so as to project outward from the front outer side of the
2 is attached to the transmission case 62. More specifically, the motor 82 is connected to the shift cover case 63.
It is attached to the front outside surface. The speed change drive shaft 79 is operatively connected to the output shaft 83 of the motor 82.

[0042] The motor 82 is driven, the gear drive shaft 79, for example, is rotated in the direction shown in Figure 5 in an arrow A, and the bolt 80 to rotate along with this, the interlocking bar 7
The left and right positions relative to one front end relatively change, that is, the front ends of the interlocking bars 71 are separated from each other as shown by an arrow B in FIG. Then, the left and right driving faces 64a and 64b are separated from each other, and the winding diameter of the V belt 67 around the V belt groove 69 is reduced.

As a reaction to this, each interlocking bar 7
The rear ends of the 1 approach each other as shown by an arrow C in FIG. Then, with this, the left and right driven faces 66a, 6
6b approach each other, and the diameter of the V belt 67 wound around the V belt groove 70 increases.

As a result, the speed reduction ratio in the transmission 58 increases, that is, the output shaft 83 is decelerated.

Conversely, by driving the motor 82,
Move the speed change drive shaft 79 in the opposite direction (in the direction opposite to the arrow A).
When rotated, the above operation is reversed, and the transmission 58
Is reduced, that is, the speed of the output shaft 83 is increased.

In the above case, the lateral side of the front outer surface on the right side of the speed change cover case 63 moves from the front to the rear without being disturbed by the transmission 58.
Is a part that is easy to flow smoothly.

According to this embodiment, the motor 8 is mounted on the front outer surface on the right side of the transmission cover case 63.
2 is attached. For this reason, the motor 82 generates heat when driven, and tends to be heated to a high temperature, but is effectively cooled by the traveling wind 84.

A footrest 39 is provided at the rear of the transmission case 62 on the opposite side of the engine 21 in the vehicle width direction.
Are arranged. On the other hand, as described above, since the motor 82 is attached to the front outer surface on the right side of the transmission cover case 63, the footrest 39 and the motor 82 tend to be located at the same position in the vehicle width direction. However, the motor 82 is located forward from the footrest 39, and the motor 82 is
Interference with the upper rider's foot 40 is prevented.

Further, a folded portion 27 of the exhaust pipe 26 is provided near the front of the motor 82, so that the motor 82 is protected by the folded portion 27.

1 and 6, the clutch 59 will be described.

Since the crankcase 22 of the engine 21 is heavy, the crankcase 22 is disposed substantially at the center on the left and right sides of the vehicle body in view of the balance of the vehicle body.
On the other hand, the clutch 59 is a wet multi-plate clutch, and this clutch 59 is provided near the rear of the crankcase 22. That is, the clutch 59 is also provided substantially at the center of the left and right sides of the vehicle body together with the crankcase 22. Therefore, although the clutch 59 is of a wet multi-plate type and is heavy, the weight balance of the vehicle body is well maintained. ing.

The clutch 59 has a clutch case 85. The clutch case 85 is connected to the extension case 42a.
And an extension case 41 extending rearward from the left case 41.
a.

The left end of the intermediate shaft 65 faces the inside of the clutch case 85, and a disk 86 is formed integrally with the left end of the intermediate shaft 65. A pair of projections 86a are formed on the outer peripheral surface of the disk 86 at radially symmetric positions.
Is detected.

The disk 86 has a clutch outer 87
A plurality of friction plates 88 are slidably fitted in the clutch outer 87 only in the axial direction. On the other hand, an output shaft 90 is supported on the clutch case 85 and the left end of the intermediate shaft 65 coaxially with the intermediate shaft 65. A cylindrical driven shaft 91 is coaxially supported on the output shaft 90, and the driven shaft 91
The output shaft 90 is connected via the.

A plurality of clutch plates 93 are externally slidably fitted in the clutch inner 92 only in the axial direction, and the friction plates 88 and the clutch plates 93 are alternately arranged in the axial direction.

When the friction plate 88 and the clutch plate 93 are separated from each other (disconnection operation), the power transmission is cut off. When the friction plate 88 and the clutch plate 93 are frictionally connected to each other (connection operation), the output shaft 90 is moved from the intermediate shaft 65 side. Power is transmitted to the side.

A pressure plate 94 is provided on the right side of the combination of the friction plate 88 and the clutch plate 93, and the pressure plate 94 is fitted in the clutch outer 87 so as to be slidable in the axial direction. An intermediate plate 95 is interposed between the pressure plate 94 and the inner surface of the clutch outer 87, and an intermediate spring 96 is interposed between the pressure plate 94 and the intermediate plate 95.

The inner surface of the clutch outer 87 is formed with an inclined surface 87a. The space between the inclined surface 87a and the intermediate plate 95 has such a shape that the width becomes narrower as it goes radially outward in a side view. A spherical weight 97 is interposed in this space, and a separation spring 98 for urging the friction plate 88 and the clutch plate 93 to separate from each other is provided.

When the rotation speed of the intermediate shaft 65 is equal to or less than a predetermined number of revolutions, the centrifugal force generated in the weight 97 is small. Therefore, the friction plate 88 and the clutch plate 93 are relatively separated by the separation spring 98, and the clutch 59 is disengaged. The cutting operation is performed (in FIG. 6, the pressure plate 94, the intermediate plate 95, and the front half of the weight 97 are illustrated).

On the other hand, when the rotation speed of the intermediate shaft 65 is equal to or higher than the above-mentioned predetermined number of revolutions, the centrifugal force generated in the weight 97 becomes large, so that the weight 97 becomes inclined 87a.
Is moved radially outward, and the intermediate plate 95 is pushed leftward against the separation spring 98. Then, along with this, the pressure plate 94 is pushed to the left via the intermediate spring 96, and the pressure plate 94 frictionally connects the friction plate 88 and the clutch plate 93, whereby the clutch 59 is connected (FIG. 6, at the rear half of the pressure plate 94, intermediate plate 95, weight 97, etc.).

When the speed of the intermediate shaft 65 falls below the predetermined rotational speed again, the clutch 59 performs the disconnecting operation again.

The rear end of the cover case 46 extends rearward to form an extension case 46a.
The left end of the output shaft 90 is supported by a. The drive chain 31 is attached to the output shaft 90 between the extension case 41a of the left case 41 and the extension case 46a of the cover case 46. The output shaft 90 has a through hole 101 formed on the axis thereof.
A first operation shaft 102 is fitted in the first operation shaft 101 so as to be slidable in the axial direction.

The right end of the first operation shaft 102 is a sphere 103
Through the pressure plate 94. An operating hole 104 is formed in the extension case 46a corresponding to the left end of the first operating shaft 102, and a second operating shaft 105 is fitted into the operating hole 104 so as to be rotatable around its axis. A semicircular portion 106 is formed in the middle of the second operation shaft 105, and the semicircle portion 106 is engaged with and disengaged from the left end of the first operation shaft 102 by the rotation of the second operation shaft 105. ing.

The second operation shaft 105 is connected to the handle 1
2 is connected to a clutch lever (not shown) provided corresponding to the left grip. When the clutch lever is rotated by gripping, the semicircular portion 106 is moved to the first position.
The first operating shaft 102 is engaged with the left end of the operating shaft 102 and pushes the first operating shaft 102 rightward against the intermediate spring 96. Then, the first operation shaft 102 is moved through the sphere 103 to the pressure plate 94.
Is pushed rightward to separate the friction plate 88 and the clutch plate 93 from each other, and the clutch 59 is disengaged in the same manner as described above. In other words, even when the intermediate shaft 65 is at or above the predetermined rotational speed and the clutch 59 is engaged by the action of the weight 97 as described above, the clutch 59 can be disengaged by operating the clutch lever. Can be.

In FIGS. 1 and 6, the speed reducer 6
Numeral 0 denotes a planetary gear type provided coaxially with the output shaft 90. The reduction gear transmission 60 includes a ring gear 108 attached to the extension case 41 a of the left case 41, a sun gear 109 formed on the driven shaft 91, a carrier 110 spline-fitted to the output shaft 90,
And a planetary gear 111 that meshes with the ring gear 108 and the sun gear 109.

4 and 6, the left case 41 and its extension case 41a and the cover case 46 and its extension case 46a are detachably screwed with bolts 113, and an aluminum gasket is provided between the two. 114 is provided. 115 is a knock pin.

In FIG. 6, a bearing 116 for supporting the intermediate shaft 65 with respect to the extension case 42a of the right case 42,
A lubricating device is provided to lubricate the left end of the intermediate shaft 65 and a bearing 117 for supporting the output shaft 90.

The bottom of the clutch case 85 is an oil reservoir for lubricating oil. The lower portion of the friction plate 88 and the clutch plate 93 is always oil bathed by the oil reservoir.

3 and 6, the lubricating oil scooped up by the friction plate 88 and the clutch plate 93 is provided in an oil passage 121 formed in the extension case 41a of the left case 41 and the extension case 46a of the cover case 46.
Is supplied to the operation hole 104 through the hole. A spiral oil groove 122 is formed on the outer peripheral surface of the second operation shaft 105, and an oil groove 123 extending in the axial direction is also formed on the inner peripheral surface at the right end of the through hole 101. Also,
An oil hole 124 penetrating in the radial direction is formed in the output shaft 90, and an oil hole 125 is also formed in the clutch inner 92 corresponding to the oil hole 124.

The lubricating oil that has naturally flown into the operation hole 104 through the oil passage 121 as shown by an arrow E in FIG. 3 without using a hydraulic pump is further subjected to the above operation as shown by an arrow F in FIG. From the hole 104 to the through hole 101, the oil groove 122,
Then, the oil flows through the oil holes 124 and 125 between the friction plate 88 and the clutch plate 93 to lubricate them. Further, as shown by an arrow G in FIG. 6, part of the lubricating oil 118 in the through-hole 101 lubricates the bearing portion 117 through the oil groove 123.

In FIG. 6, a rib 127 protrudes from the inner surface of the extension case 42a of the right case 42, and a guide notch 128 and an oil hole 129 following the rib 127 are formed. The lubricating oil scraped up by the projection 86a of the disk 86, the clutch outer 87, etc.
As shown by the middle arrow H, the rib 127, the guide notch 1
28, and through the oil hole 129, is guided to the bearing portion 116 to lubricate it.

In FIGS. 1 and 5, a water pump 131 is mounted on the right side of the transmission cover case 63, and the water pump 131 is driven by a drive shaft 43a.
The water pump 131 circulates cooling water to cool the cylinder 23.

[0073]

According to the present invention, an engine and a transmission are arranged side by side in the vehicle width direction between the front and rear wheels. A flywheel magneto that is disposed near one end of the crankshaft on the opposite side in the width direction and is interlockedly connected to the one end, while the transmission is provided with a transmission case and a vehicle that extends in the vehicle width direction. A drive shaft supported by the transmission case, and wound around the V-belt groove supported by the drive shaft.
A drive pulley capable of changing the V-belt winding diameter of the driven V-belt; and a motor for changing and adjusting the V-belt winding diameter of the drive pulley, wherein the speed change is on the opposite side of the engine in the vehicle width direction. In a vehicle body component arrangement structure of a vehicle in which a footrest is arranged outside and rear of the case,

The drive shaft is arranged on the same axis as the crankshaft and outside the other end, and the drive shaft is interlocked with the crankshaft.

For this reason, a drive shaft of the transmission is arranged on the same axis as the crankshaft of the engine and outside thereof, and this drive shaft is interlocked with the crankshaft. As compared with the case where the drive shaft is far away from the crankshaft in the front-rear direction of the vehicle body, the interlocking connection of the driveshaft to the crankshaft is achieved with a simple configuration, that is, the drive shaft is The structure for interlocking the drive pulley of the transmission via the shaft is simplified.

[0076] Further, the motor so that the motor outward from the front outer side of the opposite side of the transmission case in the vehicle width direction to the engine the transmission case as a reference protrudes attached to the transmission case is there.

Therefore, the motor sufficiently receives the traveling wind when the vehicle travels without being disturbed by the transmission case. Therefore, although this motor is likely to generate heat and become high temperature by its driving,
It is cooled effectively by the traveling wind.

In the above case, the engine is provided with a flywheel magneto disposed near one end of the crankshaft and connected to the one end in an interlocked manner. The flywheel magneto and the motor are largely divided right and left in the width direction of the vehicle body because the flywheel magneto and the motor are projected outward in the width direction in the opposite direction to the engine.

Accordingly, the wiring work and the maintenance and inspection work for the flywheel magneto and the motor are prevented from interfering with each other, and these works are facilitated.

Further, as described above, when the footrest is provided outside and behind the speed change case on the opposite side of the engine in the vehicle width direction, as described above, the footrest on the opposite side of the engine in the vehicle width direction is provided. The motor projects outward from the front outer surface of the transmission case.

Therefore, the footrest and the motor tend to be located at the same position in the vehicle width direction, but the motor is located away from the footrest. Therefore, the motor is prevented from interfering with the rider's foot on the footrest.

The drive pulley is connected to the drive shaft.
Are slidably supported only in the axial direction and cooperate with each other.
To form a pair of drive faces for forming the V-belt groove.
And extends parallel to the drive shaft and can rotate around its axis.
Is supported by the above-mentioned speed change case and interlocks with the above-mentioned motor.
A speed change drive shaft to be connected is provided, and the speed change drive shaft
Drive faces are linked to each other to drive the motor
In conjunction with the rotation of the variable speed drive shaft by
On the other hand, each of the above drive faces slides and pulls each other.
Separated or approaching each other, V
The belt winding diameter is changed.

For this reason, the speed change drive is
By rotating the drive shaft and changing the V-belt winding diameter
The two drive faces are separated from each other
The drive pulley
Axial direction of the drive shaft of the portion of the V belt wound around
Is prevented from changing.

Therefore, each time the V belt winding diameter is changed and adjusted.
In the axial direction of the drive shaft, the drive pulley and the driven pulley
The relative position changes and the V-belt is bent.
Can be prevented and the load on the motor can be reduced accordingly.
The heat generation of this motor is prevented beforehand,
Also in this regard, the motor is prevented from becoming hot.

[Brief description of the drawings]

FIG. 1 is a simplified plan sectional view of an engine and a power transmission device.

FIG. 2 is an overall left side view of the motorcycle.

FIG. 3 is a partially enlarged view of FIG. 2;

FIG. 4 is a partially enlarged view of FIG. 1;

FIG. 5 is a partially enlarged view of FIG. 1;

FIG. 6 is a partially enlarged view of FIG. 1;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Motorcycle 11 Front wheel 16 Rear wheel 21 Engine 39 Footrest 40 Leg 43 Crankshaft 43a Drive shaft 47 Flywheel magneto 58 Transmission 61 V belt winding mechanism 62 Transmission case 64 Drive pulley 64a Drive face 64b Drive face 82 Motor 69 V belt Groove 79 Speed change drive shaft 84 Running wind

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B62M 25/08 B62J 25/00 B62M 9/08 B62J 39/00

Claims (1)

(57) [Claims] An engine and a transmission are juxtaposed between a front wheel and a rear wheel in a vehicle width direction. The engine is provided with a crankshaft extending in the vehicle width direction and an opposite side of the transmission in the vehicle width direction. A flywheel magneto is provided near the one end of the crankshaft and is interlocked with the one end, while the transmission is supported by the transmission case and a transmission case extending in the vehicle width direction. And a V- shape of a V-belt supported by the drive shaft and wound around a V-belt groove.
A drive pulley capable of changing the belt winding diameter, and a motor for changing and adjusting the V-belt winding diameter of the drive pulley. A footrest is provided on the outer rear side of the transmission case opposite to the engine in the vehicle width direction. In the vehicle body component disposing structure of the disposed vehicle, the drive shaft is disposed on the same axis as the crankshaft and outside the other end, and the drive shaft is interlocked with the crankshaft. , the motor so that the motor is protruded outward from the front outer side of the opposite side of the transmission case in the vehicle width direction to the engine the transmission case as a reference attached to the transmission case, said drive pulley , Only in the axial direction with respect to the drive shaft
The V-belt grooves are slidably supported and cooperate with each other.
And a pair of drive faces forming the drive shaft.
The above shifting so that it extends to the line and becomes rotatable around its axis
Variable speed drive supported by the case and linked to the motor
A shaft is provided.
The above-mentioned speed change drive by the above-mentioned motor drive
In conjunction with the rotation of the shaft, each of the drive
Are slid apart from each other, or
Approaching, the V-belt winding diameter of the drive pulley changes.
A vehicle body component arranging structure for a vehicle.