JPH07117768A - Oil tank device of motor-scooter type vehicle - Google Patents

Abstract

PURPOSE:To enlarge the owing area of an article box, improve the stowability in enlarging the capacity too and perform even the operability of lubrication so satisfactorily by forming an oil tank so as to go along the upper edge of a rear frame extending to the rear upwards aslant and to get in a clearance between a rear cover and an article box. CONSTITUTION:A front part of a symmetrical pair of rear frames 12 passes through the inside of a platelike foot rest, and the rear partextends to the rear upward aslant as widening to the side along both sides of an article box 42 from the rear of the foot rest. A lower part of a driving seat is covered with a rear cover, and a lower part of this rear cover is bulged to the outside and smoothly continued from the foot rest. An oil tank 62 exists in space between the article box 42 and the rear cover, and it is formed to be long in both longitudinal and vertical directions so as to get in an upper space of the frame 12 at the right. Since the article box 42 stores a helmet reversely up and down, a lower part of the article box 42 is diametrally narrowed by degrees along a curved surface of an a' of the helmet, whereby an interval between the article box 42 and the rear cover is thus expandable.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil tank device which is applied to a scooter type vehicle having a large luggage box which is opened and closed by a driving seat below the driving seat.

[0002]

2. Description of the Related Art In a scooter type vehicle having a separate lubrication type two-cycle engine, it is necessary to provide an oil tank for containing lubricating oil. On the other hand, a scooter is also known in which a large luggage box capable of accommodating a helmet is arranged below the driving seat.

When such a large container is provided, conventionally, this oil tank is usually arranged behind or in front of the container. That is, the container box and the oil tank are arranged below the operating seat side by side. There is also one in which the oil tank is arranged below the front part of the container box and an oil inlet is provided on the front surface of the rear cover, that is, the surface on the footrest side.

[0004]

[Problems of the prior art] When the oil tanks are arranged in front of and behind the container box, the opening area of the container box is restricted by the oil tank and becomes small. For this reason, there is a problem that it is difficult to put in and take out a large helmet and it becomes impossible to store the large helmet.

Further, in the case where the oil tank is housed below the front part of the container box, it is necessary to avoid the interference with the oil tank by making the bottom of the container box shallow or bulging the bottom of the container box upward. Occurs. Therefore, there is a problem that the capacity of the container box is reduced. Furthermore, there is a problem that the oil injection port becomes low, which makes the injection work difficult.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and increases the opening area of a container box and also the capacity to improve the storability of a large helmet or the like.
Further, it is an object of the present invention to provide an oil tank device for a scooter type vehicle which can improve workability of oil injection.

[0007]

According to the present invention, an object of the present invention is to provide a large article box opened and closed by the driver's seat between the driver's seat and an engine unit located below the operator's seat, and to which the helmet is attached. In a scooter type vehicle that can be stored upside down, a pair of left and right rear frames extending rearward from a rear portion of a substantially flat plate-like footrest, passing through both sides of the lower portion of the storage box, and the driving seat. A rear cover whose lower part bulges outward, and an oil tank which is housed between the rear cover and the container box and which is formed long in the front-rear direction along the upper edge of the rear frame, This is accomplished by an oil tank device for a scooter type vehicle, characterized in that lubricating oil is supplied to the engine located below the front part of the oil tank.

[0008]

1 is a left side view showing a part of an embodiment of the present invention, FIG. 2 is a plan view mainly showing a container box, FIG. 3 is a right side view, and FIG. 4 is mainly an engine unit. FIG. 5 is an end view taken along line VV in FIG. 1, and FIG. 6 is an end view taken along line VI-VI in FIG. The cross-sectional position in FIG.
The right half is behind the left half as indicated by the line V-V in FIG.

This embodiment is a two-wheel scooter, the frame of which is a main tube 10 extending downward and rearward from a steering shaft cylinder (not shown) which supports the front wheels in a steerable manner.
A pair of left and right rear frames 12 (12a, 12b) extending rearward from the lower end of the main tube 10 is provided.
The front portion of the rear frame 12 passes through the footrest 14 having a substantially flat plate shape, and the rear portion thereof extends obliquely upward and rearward from the rear portion of the footrest 14 along the both sides of the container 42, which will be described later. .

The rear frame 12 extends rearward through the side of the lower portion of the post-container box 42, and its rear end is a rear wheel 26 which will be described later.
To reach the height near the upper limit of wheel travel. The rear ends of the rear frames 12a and 12b are connected to each other by a substantially arc-shaped bracket 16 that is convex upward and a substantially flat plate-shaped bracket 18 (FIGS. 1 and 3).

Reference numeral 20 designates an engine unit, which is a separate lubrication type and forced air cooling type two-cycle single-cylinder engine 22.
And a transmission case 24 extending substantially horizontally from the left side of the engine 22 to the rear, and a rear wheel 26 held at the rear portion of the transmission case 24. This engine unit 20
Has a cylinder 22a that projects substantially horizontally to the front, and the upper portion of the engine 22 is pivotally supported by the rear frame 12.

That is, a pair of left and right engine brackets 28 (28a, 28b) are fixed to the rear frame 12, and an upper portion of the engine 22 is provided with links 30 (30a, 30).
It is pivotally supported on the bracket 28 via b) so as to be vertically swingable. 32 is a cushion unit, the lower end of which is pivotally supported by the rear end of the transmission case 24, and the upper end of which is pivotally supported by the lower surface of the bracket 18.

The engine unit 20 includes rear wheels 26.
The exhaust silencer 32 (FIGS. 3 and 4) located on the right side of the engine 22 and the air cleaner 34 (FIGS. 1 and 4) adjacent to the left front of the engine 22, that is, the left side of the cylinder 22a are fixed. Further, the carburetor 36 is provided on the upper surface of the crankcase of the engine 22.
(Fig. 4) is fixed. Therefore, they swing up and down together with the engine unit 20.

Reference numeral 38 denotes a fuel tank, which is mounted so that a part of the fuel tank is inserted between the arc-shaped bracket 16 and the flat plate-shaped bracket 18 from the rear side. That is, the fuel tank 38 includes a pair of front and rear press-molded halves, which are flange 3
8a, which are welded to each other.
The upper part of the bracket is bolted to the arc-shaped bracket 16 and the lower part thereof is bolted to the flat plate-shaped bracket 18. Reference numeral 40 denotes a fuel refueling cap, which penetrates a rear cover 60, which will be described later, and projects to the rear of the operation seat 52.

42 is a large synthetic resin container box,
It has the capacity to store the full-face type helmet 44 (Fig. 1) upside down. It also has long and wide openings in front of and behind the egg shape. A flat plate portion 46, which extends rearward from the rear edge of the opening and overlaps the upper surface of the arc-shaped bracket 16, is integrally formed on the article storage box 42.

The flat plate portion 46 is bolted together with the front end of the rear loading platform 48 to the upper surface of the arc-shaped bracket 16. The bottom surface of the front part of the container box 42 has rear frames 12a and 12b.
Bracket 50 (50a, 50b, FIG. 1,
3 and 4) and bolted. The lower rear part of the container box 42 projects downward from between the left and right rear frames 12a, 12b.

Further, as shown in FIG. 3, a storage box 51a for storing the battery 51 is attached to the bottom of the storage box 42. The storage box 51a has a lid whose front end can be opened and closed, and the battery 51 can be attached and detached by removing a front half of a rear cover 60 described later.

Reference numeral 52 denotes an operating seat, which is a seat bottom plate 54 made of resin and covered with an elastic material, as shown in FIG. The seat bottom plate 54 is formed in a shape that is longer in the front and rear than the upper opening of the container box 42, and the front end thereof is pivotally attached to the container box 42 by a hinge 56 so as to be openable and closable.

The operating seat 52 is lowered and the container box 42 is placed.
When the opening is closed, the rear end of the seat bottom plate 54 is engaged and locked with a seat lock (not shown) provided on the arcuate bracket 16. At this time, the seat bottom plate 54 has six seating portions 58 (58a to 58) shown by hatching in FIG.
The seat load is supported by the container box 42 in contact with f).
The lower side of the driving seat 52 is covered with a rear cover 60,
The rear cover 60 smoothly continues to the footrest 14.

Reference numeral 62 is an oil tank made of resin. The oil tank 62 stores lubricating oil supplied to the engine 22 and the carburetor 36 by a metering pump (not shown). The oil tank 62 is a container box 4
2 between the rear cover 60 and the right rear frame 1
It is formed to be long in the front-rear direction and the up-down direction so as to enter the space above 2b.

As shown in FIGS. 3 and 6, the front portion of the oil tank 62 is supported by a tank support base 64 integrally formed on the right engine bracket 28b. That is, the projection 62a protruding from the oil tank 62 is inserted into and fixed to the rubber bush 66 mounted on the tank support base 64. The upper rear portion of the oil tank 62 is screwed to a fixed seat 68 fixed to the outer wall of the container box 42.

The bottom of the oil tank 62 extends along the front lower edge of the rear frame 12a, and an oil injection port 70 is provided on the upper surface of the rear part of the oil tank 62 so as to bend toward the right side of the vehicle body. The oil inlet 70 faces the inside of a lid plate 72 (FIG. 5) provided on the rear cover 60. This lid plate 72
Is detachably attached to the rear cover 60 with a plurality of claws,
The upper edge thereof is covered with a seat bottom plate 54 of the driving seat 52.

That is, the rear cover 60 is formed with a pair of left and right openings close to the rear lower edge of the driving seat 52,
The lid plate 72 is detachably attached to the opening on the right side. A cover plate 74 used as a standing handle is fitted into the opening on the left side so that the arc-shaped bracket 16
Fixed with screws. Further, the lid plate 74 is engaged with the opening edge of the container box 42 from below and its upward rotation is restricted, so that it is more securely fixed. Therefore, when the main stand (not shown) is hung, the fingertip can be inserted into the cover plate 74 to lift the vehicle body. When injecting oil, open the operation seat 52, remove the right lid plate 72,
It suffices to remove the cap 76 of the oil injection port 70 facing this opening for injection.

The front portion of the oil tank 62 bulges downward from the outside of the rear frame 12b. That is, since the space between the rear frames 12a and 12b is gradually narrowed toward the footrest 14 along the side surface of the product box 42, the space between the rear frame 12b and the rear cover 60 is near the front of the product box 42. Is becoming wider.

The rear frames 12a and 12b are offset so that a part of the rear frames 12a and 12b fit in a recess 42a provided at the bottom of the container box 42, and the distance between the frame 12b and the rear cover 60 is further expanded. The oil tank 62 bulges outward of the rear frame 12b by utilizing this interval.
The oil pipe 7 is provided on the lower surface of the bulging portion 62b (FIG. 3).
8 is connected.

Since the engine 22 is located below the front part of the container box 42, the oil tank 62 and the engine 22 come close to each other. Therefore, the oil pipe 7
It is desirable that 8 is short and that this oil pipe 78 can be passed near the engine bracket 28.

Further, since the helmet 44 is accommodated upside down in the container box 42, the lower part of the container box 42 can be gradually reduced in diameter along the curved surface of the top of the helmet 44 to narrow it. Therefore, the lower part of the container box 42 and the rear cover 6
There is a relatively large space between 0 and 0. In the present invention, this space is effectively used to increase the capacity of the oil tank 62.

In the embodiment, the rear frame 12b is offset to the reduced diameter portion or the recess 42a of the lower portion of the container box 42,
The storage space of the oil tank 62 is further expanded. In this embodiment, the inlet 70 of the oil tank 62 faces the side surface of the rear cover 60.
Does not reduce the upper opening area. That is, the storage box 4
The opening of 2 can be made larger to facilitate the loading and unloading of luggage.

[0029]

As described above, according to the first aspect of the present invention, the oil tank is formed along the upper edge of the rear frame extending obliquely rearward and into the gap between the rear cover and the container box. Therefore, the oil tank capacity can be increased without reducing the opening of the container box. That is, since the helmet holds the luggage box upside down, the diameter of the lower part can be reduced to gradually narrow it, and therefore the space between the lower part of the luggage box and the rear cover can be widened. Because.

Also, since the opening of the container box can be ensured to be large enough, it is easy to take in and out large luggage such as a helmet,
Good accommodation. Further, the bottom of the oil tank is inclined downward and the front of the oil tank approaches the engine, so the oil pipe becomes short. Since the oil tank is low and located near the center of the vehicle, it is suitable for lowering the center of gravity and optimizing the front and rear wheel distributed load.

[Brief description of drawings]

1 is a side view of a portion of one embodiment of the present invention.

[FIG. 2] Similarly, a plan view mainly showing a container box.

[Figure 3] Similarly, right side view

FIG. 4 is a plan view mainly showing an engine unit.

5 is an end view of the VV line in FIG.

6 is an end view of line VI-VI in FIG.

[Explanation of symbols]

 12 Rear Frame 14 Footrest 20 Engine Unit 42 Storage Box 52 Operating Seat 60 Rear Cover 62 Oil Tank

Claims (1)

[Claims] 1. A large-sized container box opened and closed by the driver's seat is provided between the driver's seat and an engine unit located below the driver's seat, and the helmet can be stored upside down in the container box. In a scooter type vehicle, a pair of left and right rear frames extending from the rear part of the substantially flat footrest to both sides of the lower part of the storage box and obliquely rearward, and the lower part of the operating seat that covers the lower part and expands outward. A rear cover that has been taken out and an oil tank that is housed between the rear cover and the container box and that is formed long in the front-rear direction along the upper edge of the rear frame are provided from the front part of the oil tank to the lower part thereof. An oil tank device for a scooter type vehicle, which supplies lubricating oil to the engine located.