JP2973983B2 - Scooter type vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scooter type vehicle in which a storage box is provided below a seat and a unit swing type engine is disposed below the storage box.

[0002]

2. Description of the Related Art In a general scooter type vehicle, a rear body on which a seat is mounted has a relatively large internal volume, and a storage box is provided inside the rear body.
The seat itself is the lid of the storage box. The storage box is provided with a shape and capacity capable of storing a full face type helmet. Then, a unit swing type engine is arranged below the rear body.

FIG. 6 shows an example of a conventional scooter type vehicle.

In this scooter type vehicle, a front wheel a steered by a steering wheel c and a rear wheel b driven by a unit swing type engine d are arranged in front and rear, and a lower bay is provided between the steering wheel c and the seat e. A step board f to be inserted is provided, a sheet e is placed on a rear body h in which a storage box g is built, and a unit swing type engine d is arranged below the rear body h. The storage box g has a shape and a volume capable of storing a full face type helmet i in a vertical direction.

In the unit swing type engine d, a crankcase k is connected to the rear of a cylinder j which is inclined substantially horizontally forward, and a swing case 1 is provided to the rear from one side of the crankcase k. Crankcase k
The rear wheel b located immediately behind is pivotally supported, the front end of a support arm m extending forward and downward is pivotally supported by a frame o by a pivot n so as to be swingable up and down, and the rear upper portion is supported by a rear cushion unit p. It is supported and shock-suspended.

The exhaust pipe q extends downward from the cylinder j, and is connected to a muffler r that extends to the rear and upward around the opposite side of the swing case l. On the other hand, the intake pipe s is introduced at the front upper part of the crankcase k, and the carburetor t connected to the rear part of the intake pipe s is located at the rear upper part of the crankcase k, and the air cleaner case u is further connected to the rear part. . The parts such as the exhaust pipe q, the muffler r, the intake pipe s, the carburetor t, and the air cleaner case u all swing up and down around the pivot n integrally with the unit swing type engine d.

In such a scooter type vehicle, the expansion / contraction stroke of the rear cushion unit p is determined by the position and gap between the upper line (upper profile in side view) of the unit swing type engine d and the bottom surface v of the storage box g. Was decided. Similarly, the height of the sheet e and the shape of the bottom surface v of the storage box g are determined by this positional relationship.

In particular, since the storage box g is set large so as to be able to store the full face type helmet i, restrictions are also large. In many cases, it was not possible to satisfy the demand for lowering the height of the garment to improve the footing.

In order to alleviate such a constraint,
In the storage box g in the illustrated example, the helmet i is stored with the opening bottom face down, and a dent w that intrudes into the opening is formed on the bottom face v of the storage box g. When the unit swing type engine d swings upward, the carburetor t enters the recess w, so that the expansion and contraction stroke of the rear cushion unit p can be increased.

The scooter type vehicle shown in FIG. 7 has a support arm m ₁ extending upward from the upper surface of a crankcase k.
Pivot n the upper end of is located in the lower portion of the storage box g ₂
It is supported on the frame o ₁ through _1. Thus, the storage box bottom v units for ₂ swing type engine d and carburetor t at the time of the unit swing type engine d about the pivot n ₁ is vertically swingable
_2, to reduce the amount of displacement of the air cleaner case u _2, it is possible to increase the expansion stroke of the relatively rear cushion unit p.

That is, the carburetor t ₂ and the air cleaner case u ₂ are arranged ahead of the pivot n _1, and move away from the storage box bottom surface v ₂ when the unit swing type engine d swings upward. Therefore, when the rear cushion unit p over the main stand z is the total elongation may be set as the upper end of the carburetor t ₂ is closest to the housing box bottom v _2, expansion stroke increase of the rear cushion unit p In addition, the seat height can be reduced.

Furthermore, the scooter type vehicle shown in FIG.
Obtained by forming a storage box g ₃ so that it can house the helmet i ₁ full-face type in upside-down orientation,
Its bottom v ₃ is formed in a curved surface or spherical shape in accordance with the top surface of the helmet i _1, carburetor t ₃ is arranged opposite to the curved portion to its upper, a gap between both is largely stretching stroke increase of the rear cushion unit p ₁ is achieved.

[0013] Again, the unit swing type engine d
Pivot n ₁ because it is located at the bottom of the storage box g _3, the unit swing type engine d and carburetor t ₃ and the displacement amount of the air cleaner case u ₃ is small,
This contributes to the expansion and contraction stroke increase of the rear cushion unit p _1. In addition, the rear cushion unit _{p 1}
Are coupled by the support arm m and the link mechanism is disposed in the rear body h before the bottom of the front cylinder j, has become a constraint due to interference with the frame o ₁ and the rear cushion unit p ₁ is completely eliminated .

[0014]

However, by forming a recess w in the bottom surface v of the storage box g as in the scooter type vehicle shown in FIG. 6, the carburetor t and the bottom surface v when the unit swing type engine d swings upward. However, if the throttle cable x of the carburetor t is pulled out upward, the throttle cable x may be forcibly bent, the operation may become heavy, and a poor return may occur. Has not yet been relaxed. Further, the presence of the recess w necessitates a reduction in the function of the storage box g.

[0015] Figure 7 and as in the scooter type vehicle of FIG 8, the pivot _{n 1} storage box _g 2, storage box bottom surface of the unit swing type engine d by placing the bottom of _{g 3 v} 2, _{v 3} The amount of displacement with respect to
In the case where the expansion / contraction stroke of the rear cushion unit p is relatively increased, the storage box bottom surfaces v ₂ and v ₃ need to have a curved shape or a spherical shape that expands downward in a side view, and the storage box g ₂ , the stability of the helmet and other small parts that are housed in the g ₃ is poor, or emit a noise such as a helmet with backlash, there was a concern, such as damage to rolling.

The scooter type vehicle according to the present invention has been invented in consideration of the above-mentioned circumstances. The first object of the invention is to improve the shape of the bottom surface of the storage box so that the vehicle can be stored in the storage box. The purpose is to improve the stability of helmets and other small articles used.

Further, the second scooter type vehicle according to the present invention can be configured as follows.
The purpose of this is to improve the ride comfort by securing a large expansion and contraction stroke of the rear cushion unit, and at the same time to increase the engine capacity by increasing the capacity of the air cleaner case without sacrificing the expansion and contraction stroke of the rear cushion unit. It is in.

[0018]

In order to achieve the above object, a scooter type vehicle according to a first aspect of the present invention comprises a rear wheel, a cylinder which is tilted substantially horizontally forward, and a rear wheel of the cylinder. A rear body including a seat and a storage box disposed below the seat, the unit swing type engine uniting a crankcase connected to the crankcase and a swing case that supports the rear wheel at a rear portion and is provided at a rear portion. A scooter-type vehicle suspended vertically about a pivot disposed in the unit swing type engine, at a lower portion of the storage box, the storage box bottom portion is at least partially a bottom surface on one side in the vehicle width direction. Is formed to be higher than the bottom surface on the other side, and holds the helmet stored in the storage box, and the bottom surface of the storage box is below the bottom portion on the high side. Wherein the top portion of the carburetor provided on the upper portion of the unit swing type engine is disposed, further characterized in that the air cleaner case disposed on the rear wheel side of the vehicle width direction outer side nearer the carburetor.

A scooter-type vehicle according to a second aspect of the present invention is the scooter-type vehicle according to the first aspect, wherein the bottom of the storage box has a raised shape at least partially on one side in the vehicle width direction than the bottom surface on the other side. It is characterized by being raised.

A scooter-type vehicle according to a third aspect of the present invention is the scooter-type vehicle according to the first or second aspect, wherein the contour of the other side of the bottom of the storage box is substantially horizontal when viewed from the side of the vehicle. .

According to the first aspect of the present invention, at least a part of the bottom surface of the storage box bottom on one side in the vehicle width direction is made higher than the other side bottom surface. The space beneath the bottom can be enlarged in the height direction to increase the surplus space. In addition, the space below the bottom with the higher bottom is the clearance space when the carburetor swings upward because the top of the carburetor is located. For this reason, the amount of upward swing of the unit swing type engine, that is, the expansion and contraction stroke of the rear cushion unit can be increased to improve the riding comfort.

The air cleaner case is arranged on the rear wheel side, which is closer to the outside in the vehicle width direction than the carburetor, but since this arrangement space is an open space with almost no interference around it, the air cleaner case has a space for the rear cushion unit. The capacity of the air cleaner case can be increased without sacrificing the extension stroke, and the engine output can be improved by the increased capacity.

According to the second aspect of the present invention, in addition to the function and effect of the first aspect, at least a part of the storage box bottom on one side in the vehicle width direction is raised from the bottom on the other side by a raised shape. Helmet can be held on this high bottom. Further, when the bottom rising shape is formed into a curved surface that fits a part of the curved surface of the helmet, at least a part of the curved surface of the helmet is formed on the curved surface of the raised portion of the bottom in the storage box. Since the helmet can be fitted, the helmet can be held in the storage box with good stability, and rattling and rolling can be prevented.

According to the third aspect of the invention, in addition to the functions and effects of the first or second aspect of the present invention, a substantially horizontal flat portion is provided on the other side of the storage box bottom portion when viewed from the side of the vehicle. Even small articles other than helmets can be held with good stability.

[0025]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention. FIG. 1 is a left side view showing an example of a scooter type vehicle according to the present invention, and FIG. 2 is a plan view of the scooter type vehicle. FIG. 3 shows a storage box 8 described later.
4 and FIG. 5 are AA of FIG. 1 respectively.
It is a longitudinal cross-sectional view along a line.

In this scooter type vehicle, a front wheel 1 steered by a steering wheel 3 and a rear wheel 2 driven by a unit swing type engine 4 are arranged in front and rear, and a steering wheel 3 and a seat 5
The step board 6 is provided so as to be indented downward at a lower portion, so that the rear body 7 on which the seat 5 is mounted is set to a relatively large volume, and the unit swing type engine 4 integrated with the rear wheel 2 is provided therebelow. Be placed.

In the rear body 7, a storage box 8 is provided at a front portion, and a fuel tank 9 is provided at a rear portion. As shown in FIGS. 2 to 5, the storage box 8 has a shape adapted to store, for example, a full-face type helmet 10 in a posture in which the front surface is directed forward and turned rightward.
It is formed to have a volume. Reference numeral 11 shown in FIG. 1 denotes a convex portion formed on the bottom surface 8a, and the helmet 1
It is provided to stably hold 0.

In the unit swing type engine 4, a crankcase 13 is connected to the rear of a cylinder 12 that leans forward substantially horizontally, and a swing case 14 is connected from one side (for example, left side) of the crankcase 13 to the rear. A rear wheel 2 that is located immediately behind the crankcase 13 is pivotally supported at the rear portion. A support arm 15 formed at a lower front portion of the crankcase 13 is pivotally supported by a frame 17 by a pivot 16 so as to be able to swing up and down, and a rear upper portion of the swing case 14 is supported by a rear cushion unit 18 to be buffer-suspended. You.

An exhaust pipe 19 that constitutes an exhaust passage extends from the lower surface of the cylinder 12 and passes through the opposite side of the swing case 14 and continues to a muffler 20 that is disposed on the side of the rear wheel 2 and extends rearward and upward. On the other hand, the intake passage 21 is introduced into a front upper part of the crankcase 13 from a carburetor 22 provided above and behind the crankcase 13, and further connected to an air cleaner case 23 behind the carburetor 22.

The carburetor 22 is of a type in which a throttle lever box 24 surrounding a throttle lever is located on a side surface, and a throttle cable 25 is led out from the throttle lever box 24 forward.

In addition, an ignition ignition coil 26 is mounted on the front side of one side of the crankcase 13, and each part of the engine is provided on the front upper part of the crankcase 13 adjacent to the side of the introduction part of the intake passage 21. An oil pump 27 for lubrication is arranged.

As described above, the storage box 8 formed so that the full-face type helmet 10 can be stored, for example, in a state where the helmet 10 is turned to the right side, has a bottom surface 8a on one half of the left and right sides in the vehicle width direction (for example, the right half surface). ) Is formed in a shape that rises upward along the curved surface of the top surface 10 a of the helmet 10.

In this embodiment, as shown in FIG. 4, the right half of the bottom surface 8a is curved almost entirely along the curved surface of the top surface 10a of the helmet 10. The cross-sectional shape of the portion that rises above the bottom surface 8a may be a curved cross section as shown in FIG. 4 or a polygonal cross section as shown in FIG. 1
It is good to form along 0a.

On the other hand, the other half surface of the bottom surface 8a (for example, the left half surface) is formed in a shape having a horizontal plane portion. In this embodiment, of the left half surface of the bottom surface 8a, about two-thirds from the front is formed as a horizontal plane portion, and the remaining one-third is formed on the top surface 1 of the helmet 10.
It is formed in a shape that rises upward along the curved surface 0a. The left half of the bottom surface 8a may be entirely flattened.

The shape of the storage box 8 is such that, for example, the helmet 10 is stored on the left side instead of the right side,
Alternatively, even in the case of being formed so as to be stored upside down, at least a part of the left and right half surfaces of the bottom surface 8a is formed to have a shape that rises upward along the top curved surface of the helmet 10, and the other half surface is formed. Is formed in a shape having a horizontal plane portion.

By the way, the outline shape of the storage box 8 in a plan view of the vehicle (see FIG. 3) is such that when the helmet 10 is stored, the opening bottom surface 10b of the helmet 10 is inclined rearward and outward outward. The rear surface 8c of the storage box 8 is formed in a curved shape that substantially matches the rear surface 10c of the helmet 10.

Accordingly, the plan-view contour of the storage box 8 has a substantially symmetrical oval shape. This symmetrical shape facilitates the molding of the storage box 8 made of synthetic resin and replaces the cover. The shape of the seal member between the sheet 5 and the bottom plate is simplified, and the manufacture is easy.

When the helmet 10 is stored in the storage box 8, an arcuate gap 28 (a hatched portion shown in FIG. 3) is formed between the opening bottom surface 10b of the helmet 10 and the side surface 8b of the storage box 8. Is formed. This gap 28 is convenient for inserting a hand and grasping the edge of the helmet 10 (opening bottom surface 10b).
Can be easily put in and out of the storage box 8.

On the other hand, the carburetor 22 provided on the upper part of the unit swing type engine 4 and the air cleaner case 23 connected to the rear part thereof are located above the bottom surface 8a of the storage box 8 as is clear from FIG. 4 or FIG. It is located below the rising part. That is, the carburetor 22 and the air cleaner case 23 are installed on the right side of the rear wheel 2, and are located below the right half of the bottom surface 8a. Reference numeral 29 shown in FIG. 4 is a projection formed on the bottom surface 8a for holding the helmet 10.

As shown in FIG. 2, the air cleaner case 23 is arranged closer to the outside than the carburetor 22 in the vehicle width direction (to the right in this embodiment) in plan view. Further, as shown in FIG. 1, the height of the top of the air cleaner case 23 is higher than the height of the top of the carburetor 22 in a side view.

By the way, an oil tank 30 is arranged below the front part of the bottom surface 8a of the storage box. As described later, the storage box 8 is formed to be shallow,
Since there is a sufficient space between the cylinder a and the cylinder 12, and the cylinder 12 is mainly displaced in the front-back direction when the unit swing type engine 4 swings, it is impossible to install the oil tank 30 in this portion. It is possible without. Thereby, the installation place of the conventional oil tank, for example, the space in the rear body 7 is expanded, and can be used for increasing the capacity of the fuel tank 9 and arranging other parts. Further, the distance from the oil pump 27 is short, and the piping is easy.

The scooter type vehicle according to the present invention is configured as described above. When the storage box 8 is formed into a shape suitable for storing the helmet 10 in a sideways posture as in this scooter type vehicle, when the helmet 10 is formed to be stored in a vertical posture as in the conventional case, In comparison, the depth of the storage box 8 can be set shallow. That is, when the upper and lower widths H and the left and right widths W of the full-face type helmet 10 are compared, it is general that H> W, so that the helmet 10 is stored in a horizontal position rather than in a vertical position. The position of the storage box bottom surface 8a can be raised by the dimension difference of W.

Also, the left and right half surfaces (the right half surface in this embodiment) of the bottom surface 8a of the storage box 8 are formed in a shape that rises upward along the curved surface of the top surface 10a of the helmet 10 stored sideways. Therefore, an extra space is created on one side (right side) below the storage box bottom surface 8a.

Since the carburetor 22 and the air cleaner case 23 are arranged below the surplus space, when the unit swing type engine 4 swings upward, the carburetor 22 and the air cleaner case 23 enter the surplus space from below. Thus, a clearance space between the carburetor 22 and the air cleaner case 23 is secured, and interference with the storage box bottom surface 8a can be avoided.

As described above, the storage box 8 can be formed to be shallow, and the excess space formed on one side below the storage box bottom surface 8a can be applied to the clearance space of the carburetor 22 and the air cleaner case 23. The storage box bottom surface 8a is replaced by the unit swing type engine 4 as much as the depth of the box 8 is reduced.
To increase the amount of upward swing of the unit swing type engine 4, that is, the expansion stroke of the rear cushion unit 18, in addition to the clearance space of the carburetor 22 and the air cleaner case 23,
The ride comfort can be improved.

Further, the shape of the surplus space formed on one lower side of the storage box bottom surface 8a is a lateral wedge shape whose height increases toward the outside in the vehicle width direction (the right side in this embodiment), and the rear side of the carburetor 22. Since the air cleaner case 23 is a component larger than the carburetor 22, the air cleaner case 23 is arranged closer to the outside in the vehicle width direction than the carburetor 22 in a plan view, and the height of the top of the air cleaner case 23 in a side view. By setting the height of the carburetor 22 higher than the height of the carburetor 22, the large-capacity air cleaner case 23 can be installed without sacrificing the expansion / contraction stroke of the rear cushion unit 18, thereby contributing to an improvement in engine output.

Further, since the shape of one half surface of the bottom surface 8a of the storage box fits the curved shape of the top surface 10a of the helmet 10 turned down, the helmet 10 is held in the storage box 8 with good stability. And rolling is prevented. In addition, since the other half surface of the storage box bottom surface 8a has a horizontal flat portion, even small articles other than the helmet 10 can be stably held.

As shown in FIG. 5, the helmet 10
When the is stored in the lying position, the opening bottom surface 10b in the upright state may be inclined upward and outward (to the left in this embodiment) at a shallow angle. By inclining the open bottom surface 10b of the helmet 10 shallowly outward in this manner, the position of the curved surface extending from the side surface 10d to the top surface 10a of the helmet 10 is increased, and the storage box bottom surface 8a facing this curved surface is moved to its lower position. As a result, the distance between the bottom 8a and the carburetor 22 and the air cleaner 23 can be further increased.

The configuration of the above-described embodiment is the same in a scooter type vehicle in which the position of the pivot 16 of the unit swing type engine 4 is set above the rear of the crankcase as shown in FIGS. Can be applied to

[0050]

As described above, according to the first aspect of the present invention, at least a part of the bottom surface of the storage box bottom on one side in the vehicle width direction is higher than the bottom surface on the other side. For this reason, the space below the bottom portion on the side where the bottom surface is higher can be enlarged in the height direction to increase the surplus space. In addition, the space below the bottom with the higher bottom is the clearance space when the carburetor swings upward because the top of the carburetor is located. For this reason, the amount of upward swing of the unit swing type engine, that is, the expansion and contraction stroke of the rear cushion unit can be increased to improve the riding comfort.

The air cleaner case is arranged on the rear wheel side, which is closer to the outside in the vehicle width direction than the carburetor. However, since this arrangement space is an open space with almost no interference around the rear cleaner unit, The capacity of the air cleaner case can be increased without sacrificing the extension stroke, and the engine output can be improved by the increased capacity.

According to the second aspect of the present invention, in addition to the function and effect of the first aspect, at least a part of the storage box bottom at one side in the vehicle width direction is raised from the bottom at the other side by a raised shape. Helmet can be held on this high bottom. Further, when the bottom rising shape is formed into a curved surface that fits a part of the curved surface of the helmet, at least a part of the curved surface of the helmet is formed on the curved surface of the raised portion of the bottom in the storage box. Since the helmet can be fitted, the helmet can be held in the storage box with good stability, and rattling and rolling can be prevented.

According to the third aspect of the present invention, in addition to the functions and effects of the first or second aspect of the present invention, a substantially horizontal plane portion as viewed from the side of the vehicle is provided on the other side of the storage box bottom. Even small articles other than helmets can be held with good stability.

[Brief description of the drawings]

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

FIG. 2 is a plan view of the scooter type vehicle.

FIG. 3 is a plan view of a storage box in a state where a helmet is stored.

FIG. 4 is a view showing the first embodiment of the present invention by a vertical section along the line AA in FIG. 1;

FIG. 5 is a view showing a second embodiment of the present invention by a longitudinal section along the line AA in FIG. 1;

FIG. 6 is a left side view of a conventional scooter type vehicle.

FIG. 7 is a left side view of a conventional scooter type vehicle.

FIG. 8 is a left side view of a conventional scooter type vehicle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Front wheel 2 Rear wheel 3 Handle 4 Unit swing type engine 5 Seat 6 Step board part 7 Rear body 8 Storage box 8a Bottom of storage box 10 Helmet 12 Cylinder 13 Crank case 14 Swing case 15 Support arm 16 Pivot 17 Frame 18 Rear cushion unit 19 Exhaust pipe 20 Muffler 21 Intake passage 22 Carburetor 23 Air cleaner case

Claims (3)

(57) [Claims] 1. A rear wheel, a cylinder inclined forward substantially horizontally, a crankcase connected to the rear wheel side of the cylinder, and a swing case connected to the crankcase and pivotally supporting the rear wheel at a rear portion. A unitized unit swing type engine is suspended in a lower part of a rear body having a seat and a storage box arranged below the seat so as to be able to swing up and down around a pivot arranged in the unit swing type engine. In the scooter type vehicle, the storage box bottom is formed such that at least a part of the bottom surface on one side in the vehicle width direction is higher than the bottom surface on the other side, and a helmet stored in the storage box is formed. Hold and
A top portion of a carburetor provided at an upper portion of the unit swing type engine is disposed below a bottom surface portion on a side where a bottom surface of the storage box is higher, and further, an air cleaner case is disposed closer to an outer side in a vehicle width direction than the carburetor. A scooter-type vehicle characterized by being arranged on the side. 2. The scooter-type vehicle according to claim 1, wherein the bottom of the storage box has at least a portion on one side in the vehicle width direction raised so as to be higher than the bottom on the other side. 3. The scooter-type vehicle according to claim 1, wherein a contour shape of the other side of the bottom portion of the storage box is substantially horizontal when viewed from the side of the vehicle.