JPH0818586B2 - Scooter type vehicle - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scooter type vehicle including a unit swing type power unit.

(Prior Art) A two- or three-wheeled vehicle equipped with a substantially plate-shaped footrest provided below the steering bar handle and the driver's seat and a leg shield standing upward from the front of the footrest. There is a scooter type vehicle.

There is a vehicle of this type in which the rear wheels are held by a unit swing type suspension device. This is a unit in which an engine and a transmission case are integrated into a power unit, and a rear wheel is held in the power unit so that the whole unit can swing up and down.

(Problems of Prior Art) In such a vehicle, if the power unit is downsized and the wheel base is shortened, the engine and the transmission case approach the rear wheels. Therefore, in this case, the distributed load of the rear wheels becomes significantly larger than the distributed load of the front wheels. Also, when the driver's seat is lengthened in the front-rear direction and extended above the rear wheels, it becomes possible to sit and drive in the rear part of the driver's seat. The difference will be even greater.

(Object of the Invention) The present invention has been made in view of such circumstances,
When long driving seats installed above the unit swing type power unit extend above the rear wheels, the front and rear wheel load distribution is improved, and the large front and rear wheel load distribution is not deteriorated. An object is to provide a scooter type vehicle in which a luggage box can be provided.

(Construction of the Invention) According to the present invention, an object of the present invention is to provide a steering shaft cylinder that steerably holds a steering front wheel, a substantially plate-shaped footrest located below and below the steering shaft cylinder, and the foot. A scooter including a leg shield standing upright from a front portion of a stand and covering the steering shaft tube, a long and long front and rear driving seat extending above a rear wheel, and a unit swing type power unit holding the rear wheel. In a type vehicle, a large luggage box arranged between the driving seat and the power unit, a fuel tank provided around the steering shaft cylinder in the leg shield, and a side of the vehicle body on the fuel tank. A scooter type vehicle characterized in that it is provided with a lubrication port and a lubrication cap that are eccentrically provided on the leg shield, and a lid plate that is provided on the leg shield so as to cover the lubrication port and that can be opened and closed to the footrest side. To be achieved.

(Embodiment) FIG. 1 is a side sectional view of a fuel tank of a two-wheel scooter according to an embodiment of the present invention, FIG. 2 is an overall side view of the two-wheel scooter, and FIG. 3 is a plan view of the same. FIG. 4 is a perspective view near the leg shield.

In FIGS. 2 and 3, reference numeral 10 is a frame. The frame 10 includes a steering shaft tube 12, a front frame 14, and a pair of left and right rear frames 16 (16a, 16b) extending obliquely upward and rearward from the lower end of the front frame 14. Steering shaft tube 1
A steering front wheel 18 and a steering bar handle 20 are attached to the steering shaft rotatably held on the left and right sides of the steering shaft 2.

Reference numeral 22 is a power unit in which a forced air-cooled two-cycle horizontally placed engine 24 and a transmission case 26 are integrally assembled. A V-belt type automatic transmission is housed in the transmission case 26. A front portion of the transmission case 26 is vertically swingably connected to the rear frame 16 via a link 28. The rear portion of the transmission case 26 is elastically supported by the buffer unit 30. 32 is a rear wheel attached to the rear part of the transmission case 26.

The rear frame 16 is bent in two steps, and the front stage 16A is lower than the upper edge of the rear wheel 32 in the empty state, and the rear stage 16B is higher than the upper edge of the rear wheel 32 in the empty state. Has become. An arc-shaped rear bracket 34 is fixed to the rear stages 16B of the left and right rear frames 16a and 16b so as to project upward. A large container box 36 is disposed in the space in front of the bracket 34 and above the front stage portion 16A of the rear frame 16.

That is, the article storage box 36 is located above the power unit 22 and is housed in the space sandwiched between the operation seat 40 and the power unit 22 described later. The rear frame 16
Is arranged below the container box 36, the left and right width of the opening of the container box 36 is not limited by the interval of the rear frame 16, and the container box 36 having a sufficiently large opening can be formed. . Therefore, as shown in FIGS. 2 and 3, it is possible to form a container box 36 that can also accommodate a full-face type helmet 38.

40 is a long driving seat in the front and back, and the rear part is the rear wheel 32
Extends above. The front end of the operation seat 40 is openably and closably attached to the upper front end of the container box 36 by a hinge 42, and the rear part thereof can be locked by a lock device 44 provided on the upper surface of the bracket 34. Ie driving seat 40
If the locking device 44 is locked with the locking device 44, the bottom plate of the driving seat 40 closes the upper opening of the container box 36, and the locking device 44 is unlocked to rotate the driving seat 40 counterclockwise in FIG. For example, the storage box 36 is opened.

Below the space between the steering bar handle 20 and the driving seat 40, a substantially plate-shaped footrest 46 that encloses the lower portion of the front frame 14 and the front portion of the rear frame 16 is formed.

48 is an intake air purifier, the left and right rear frames 16a, 16b
It is accommodated in the footrest 46 so as to be located between them. The intake port 48a of the intake air purifier 48 faces the rear opening of the front frame 14.

50 is a carburetor, which is arranged near the upper portion between the engine 24 and the intake air purifier 48. The intake outflow side of the carburetor 50 is fixed to the upper surface of the engine 24 by an intake pipe 52. The intake inlet side of the carburetor 50 is connected to the intake cleaner 48 by a flexible duct 54, that is, a bellows made of rubber.

The rear portion of the footrest 46 is attached to the power unit 22 and a rear cover 56 that covers the upper side of the rear wheel 32. Also foot stand 46
The front part of the is attached to a leg shield 58 that wraps around the steering shaft tube 12, the front frame 14 and the like from the front and back.

On the rear surface of the leg shield 58, a tank accommodating portion 60 that expands rearward is integrally formed.
The lid plate 62 is installed on the foot stand 46 at the corner from the upper surface to the upper rear surface.
It is installed so that it can be opened and closed. In FIGS. 1 and 4, 64 is a hinge provided on the lower edge of the cover plate 62, and 66 is a locking device.

68 is located around the steering shaft tube 12 and the leg shield 58
The fuel tank 70 is housed on the left side of the vehicle, and 70 is this oil filling port.
(See the drawing) and is located inside the lid plate 62. Reference numeral 72 denotes a lubrication cap screwed to the lubrication port 70. The lubrication cap 72 is detached from the lubrication port 70 at the time of lubrication, and is provided with a holding portion 74 projecting on the inner surface of the cover plate 62 (Fig. 1). Held in. When the lid plate 62 is closed while the oil filling cap 72 is held by the holding portion 74, the lid plate 62 comes into contact with the stopper portion 68a provided on the fuel tank 68 as shown by the phantom line in FIG. Regulate.

In FIG. 3, 76 is a lubricating oil tank housed on the right side in the leg shield 58, 78 is an oil filling port thereof, and this oil filling port 78 is located inside the lid plate 62.

Therefore, when refueling the fuel, first, the cover plate 62 is opened, and the lubrication cap 72 is removed from the lubrication port 70 and held by the holding portion 74. After refueling in this state, attach the lubrication cap 72 to the lubrication port 70.
The cover plate 62 may be closed by screwing it on. At this time, lubrication cap
If the user forgets to screw 72 into the oil filling port 70, the oil filling cap 72 held by the holding portion 74 comes into contact with the stopper portion 68a of the fuel tank 68. Therefore, the lid plate 62 cannot be closed, and it is possible to reliably prevent the vehicle from traveling without forgetting to attach the lubrication cap 72.

Also, the lubrication port 70 is offset to one side of the vehicle body, and the cover plate 62 is a footrest
Since it is opened and closed to the 46 side, the space above the footrest 46 can be used during lubrication, which facilitates the work. Further fuel tank 68
Is located above the leg shield 58, the fuel tank 68 is sufficiently far from the grounding point of the rear wheel 32.
Moreover, since the upper part of the leg shield 58 is bulged toward the footrest 46 side, the fuel tank 68 can be increased in capacity without reducing the footrest area of the footrest 46. Therefore, the front wheel load can be further increased.

FIG. 5 is a side sectional view showing another embodiment of the fuel tank, and FIG. 6 is a perspective view thereof. This example shows a lubrication cap
72A is connected to an appropriate position in the leg shield 58 by a chain 80, for example, to the fuel tank 68A, and at the time of refueling, the refueling cap 72A is hung outside the leg shield 58 to control the closing movement of the lid 62A. . That is, by closing the chain 80 between the lid plate 62A and the opening edge on the leg shield 58 side, the closing movement of the lid plate 62A is restricted. If a guide piece 82 that projects into the opening on the side of the leg shield 58 is provided on the side edge of the cover plate 62A and the chain 80 is configured to be locked to this guide piece 82, the chain will bit into the hinge 64. Can be prevented, which is more preferable.

FIG. 7 is a side sectional view of the vicinity of another embodiment of the fuel tank. In this embodiment, the oiling cap 72B is attached to the oiling port 70 so as to be openable and closable by the hinge 84, and in the opened state, the oiling cap 72B projects outward from the leg shield 58. Therefore, if the lid plate 62B is to be closed in this state, the lid plate 62B comes into contact with the protruding oiling cap 72B and the closing movement is restricted.

In this figure, 86 is a lock lever and a lubrication cap.
72B is fixed in the closed position. Also lubrication cap 7
It is desirable to give a habit of returning to the opening direction to the 2B by a torsion spring (not shown).

In the above embodiment, the rear frame 16 is bent in two steps and the luggage box 36 is arranged above this, so that the upper part of the front part 16A in the lower position is located above the rear part 16B in the higher position. Get wider. Since the engine 24 is placed horizontally here, the front part 16A is further lowered, and the front part of the luggage box 36 is accordingly lowered. Therefore, the capacity of the front of the luggage box 36 becomes sufficiently larger than the capacity of the rear thereof, and the front portion of the luggage box 36 can be made heavier when the luggage is put therein. This results in front wheels 18
This is convenient for increasing the load distribution of and reducing the center of gravity.

(Effects of the Invention) Since the present invention thus accommodates the fuel tank in the leg shield, it is possible to increase the distributed load of the front wheels and improve the front and rear wheel load distribution. Further, since the large luggage box is arranged between the power unit and the driving seat, the luggage box is close to the position where the engine, the weight of the driver, etc. are concentrated. For this reason, when a heavy luggage is put in a large luggage box, the adverse effect on the front and rear wheel load distribution can be reduced. In addition, the fuel tank is located around the steering shaft cylinder in the leg shield, and its lubrication port is displaced to one side of the vehicle body, and the lid plate covering this lubrication port is opened and closed to the footrest side. When lubricating, the work can be done using the space above the foot stand, and the lubrication workability is good.

[Brief description of drawings]

1 is a side sectional view of the vicinity of a fuel tank according to an embodiment of the present invention, FIG. 2 is a side view of a two-wheel scooter, FIG. 3 is a plan view of the same, and FIG. 4 is a perspective view of the vicinity of a leg shield. . FIG. 5 is a side sectional view of the vicinity of another embodiment of the fuel tank,
FIG. 6 is a perspective view thereof, and FIG. 7 is a side sectional view showing another embodiment of the fuel tank. 12 …… Steering shaft cylinder, 20 …… Steering handle, 36 …… Luggage box, 40 …… Operating seat, 46 …… Foot stand, 58 …… Leg shield, 62 …… Lid plate, 68, 68A, 68B ...... Fuel tank, 70 …… Lubrication port, 72 …… Lubrication cap.

Claims (1)

[Claims] 1. A steering shaft cylinder for holding steerable front wheels steerably, a substantially plate-shaped footrest located below and behind the steering shaft cylinder, and standing upright from the front of the footrest base. In a scooter type vehicle including a leg shield that covers the steering shaft tube, a front and rear long driving seat that extends above the rear wheel, and a unit swing type power unit that holds the rear wheel, wherein the driving seat and the A large luggage box disposed between the power unit, a fuel tank provided around the steering shaft cylinder in the leg shield, and a fuel filler port provided on the fuel tank so as to be offset toward the vehicle body side. A scooter-type vehicle, comprising: an oil-filling cap; and a lid plate provided on the leg shield so as to cover the oil-filling port and capable of opening and closing toward the footrest side.