JPH042474B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a container for storing fuel etc. in a motorcycle or tricycle equipped with an underbone type frame;
Regarding the arrangement of power units, etc.

In recent years, as energy saving measures, fuel consumption charges,
An economical small automatic machine with low maintenance costs, etc.
Tricycles, or so-called soft bikes, have been in the spotlight.
Various models have been developed. Some of these small motorcycles and tricycles have an underbone frame, and a fuel tank, electrical components, etc. are arranged below a seat attached to the frame.

However, this structure has the disadvantage that the seat is located high above the fuel tank, making it difficult for female drivers to ride.

The present invention was made in view of the above circumstances, and its purpose is to prevent the height of the seat even if a container for storing fuel etc. is placed below the seat, and to prevent the height of the seat and footrest board. To provide a motorcycle or tricycle that has sufficient width and is easy to ride.

The structure of the present invention is to connect a pair of left and right backstays arranged at a predetermined distance to a down tube fixed to a head pipe, and to these backstays, there is a rising part that rises toward the rear upper part, and a part that extends approximately from the top of this rising part. A power system that is equipped with a frame that forms a seat rail that extends horizontally rearward, has a swing link pivoted in the middle of each rising part, and integrally connects the engine, crankcase, and transmission case from the front in this order. In a motorcycle or tricycle in which the unit is swingably supported on the swing link, a pair of rising parts are arranged between the lower parts thereof at a distance that allows the front part of the engine of the power unit to be accommodated, and a pair of seat rails are arranged. The seats are arranged so that the space at the front is large and the space at the rear is small, the power unit is arranged so that the front part of the engine is located between the lower part of the riser, and the seat is extended from above the riser to above the seat rail. A storage space is formed between the rising part between the bottom of the seat and the top of the power unit and between the seat rails, a fuel tank is arranged above the rear part of this storage space, and a fuel tank is arranged above the front part of the storage space. A motorcycle or tricycle characterized in that a storage container for items other than fuel is arranged and a footrest board is arranged on a backstay in front of a rising part.

An embodiment of the present invention shown in the drawings will be described below.

FIG. 1 shows a scooter type motorcycle, where 1 is a frame, 2 is a bottom link type front fork, 3 is a steering wheel, and 4 is a handle.

The frame 1 is of an underbone type, and has one down tube (two down tubes may be provided) on the rear surface of the lower part of the head pipe 5.
6 is welded to the down tube 6 and is bent so that the rear end side of the down tube 6 is approximately horizontal, and a pair of left and right back stays 8 are provided on both side surfaces of the rear end portion through gussets 7, 7, and extend rearward at a predetermined distance. , 8 are welded. On the rear sides of the backstays 8, 8, there are rising parts 9, 9 which stand up diagonally upward rearward, and a seat rail 1 whose upper end sides of these rising parts 9, 9 extend rearward substantially horizontally.
0, 10 are formed.

The rising portions 9, 9 are arranged so that the distance between them is wider than the width of the front portion of the engine of the power unit, which will be described later. The seat rails 10, 10 are the fifth
As shown in the figure, the space between them is wide at the front and gradually narrows toward the rear.

A leg shield 11 that extends to the side of the vehicle body is fixed to the head pipe 5 and the down tube 6, and the back stays 8, 8 in front of the rising parts 9, 9 are fixed to the head pipe 5 and the down tube 6.
The brackets 12, 12,
A flat footrest board 14 is mounted and fixed via 13, 13.

Containers such as a fuel tank 15 and an oil tank 21 are arranged in a storage space between the rear portions of rising portions 9, 9 below the seat 48 and between the seat rails 10, 10, which will be described later. The fuel tank 15 has the above-mentioned rising portions 9, 9 at two locations on the front and rear of the flange portion 16.
It is fixed by bolts to the upper part of reinforcing plates 17, 17 welded to the outer surface of the upper end and brackets 18, 18 welded to the seat rails 10, 10, and a cap 20 is mounted on the fuel inlet 19 on the upper surface. ing. In front of the fuel tank 15, there is a container for storing things other than fuel, such as an oil tank 21.
A cap 22 is placed over the oil filler port on the top surface of the oil tank 21. Furthermore, a bridge 23 is provided between the brackets 18 and 18.
is constructed, and this bridge 23 has a fuel tank 15
A pair of load receiving parts 2 that straddle the upper part of the
4, 24, and the side wall portions 25, 25 on both sides of the load receiving portions 24, 24 are connected to the brackets 18, 24 through through bolts 26, 26 and nuts 27, 27.
It is fixed to the outer surface of 18. Further, a cross member 28a and a U-shaped cross tube 28 are horizontally suspended between the upper portions of the rising portions 9, 9, and the cross tube 28 extends diagonally upward in the front and surrounds the oil tank 21. surrounding.

Moreover, on the rear surface of the intermediate part of the rising parts 9, 9,
Brackets 29, 29 are welded to each other, and swing links 30, 30 (only one shown) are pivotally supported on these brackets 29, 29, respectively.
A power unit 32 is arranged between these swing links 29, 29 so that the front part of the engine 33 is located between the lower portions of the rising parts 9, and is pivotally supported by swing links 29, 29. This power unit 32 is constructed by integrally connecting an engine 33, a crankcase 34, and a transmission case 35 in the order shown from the front. The engine 33 is a two-stroke engine, and a crank case 34 is connected to the rear side of the engine, and a transmission case 35 is attached to the rear side of the case 34 and extends rearward integrally with the crank case 34.
are connected. The transmission case 35 also serves as a swing arm, and a drive wheel 36 that is actively driven by a V-belt (not shown) is supported on a cantilever at its rear end. Note that a carburetor, an intake silencer, etc. (not shown) are arranged above the crankcase 34, and a silencer 3 is arranged behind the crankcase 34.
7 is placed.

The outer peripheral surfaces of the storage containers such as the fuel tank 15 and the oil tank 21 and the cross tube 28 are covered with an upper cover 38 made of synthetic resin. The upper cover 38 has a substantially cylindrical shape with its upper and lower surfaces open, and the upper sides of the fuel tank 15 and the oil tank 21 protrude from the upper opening 39 .

In the openings on both the left and right sides of the upper cover 38, there are collars 4 attached to the outer peripheries of the through bolts 26, 26.
0.40 is inserted. This upper cover 38
A front cover 41 covers the space between the front lower part of the footrest board 14 and the rear edge of the footrest board 14, that is, the front side of the rising parts 9, 9. This front cover 41 has locking pieces 42 and 4 provided on its lower edge.
2 is hooked on the rear edge of the footrest board 14, and its upper side is attached to a support stay 43 protruding from the cross member 28a using screws 44, and detachably attached along the slope of the rising portions 9, 9. has been done.

Both sides of the power unit 32 are covered by a pair of left and right side covers 45, 45 that can be divided into left and right parts. Approximately the front half of the upper edge is continuous with the lower edges on both sides of the upper cover 38, and the rear halves of these upper edges extend inward and abut each other, and the rear halves of the seat rails 10, 10 are connected to each other. It covers the upper part of the side. Further, the lower edges of the side covers 45, 45 extend rearward along the extension line of the footrest board 14, and the rear sides thereof are raised diagonally upward. And these side covers 4
A lamp unit 46 is embedded in the rear surface of the lamps 5 and 45, and is formed by integrally incorporating left and right flasher lamps and a tail lamp. Such a front cover 41 and side cover 45,
45 is divided from the outside, a power unit 32 is disposed below the divided part, and a divided part above this power unit 32 is a storage space communicating with the inside of the upper cover 38. Becomes 47. A carburetor, an intake silencer, etc. are housed above the crankcase 34 below this storage space 47.

A seat 48 is arranged above the storage containers such as the fuel tank 15 and the oil tank 21. This seat 48 has a cushion material 50 on the upper surface of a synthetic resin seat bottom 49 whose peripheral edge extends downward.
are stacked up and the cushion material 50 is covered with seat leather 51. A front end portion of the seat bottom 49 is attached to the upper portion of the extending portion of the cross tube 28 via a hinge 52. Therefore, the seat 48 is pivoted so that it can be opened and closed using its front end as a pivot point and its rear end pivoting upward.

A pair of suction cups 53 are attached to the front and rear of the lower surface of the seat bottom 49, respectively.
3 is adapted to be attracted to the upper surface of the load receiving portions 24, 24 so as to be able to come into contact with and separate from it when the seat 48 is closed. Reference numeral 54 denotes a rear carrier disposed behind the seat 48, and mounting pieces 56, 56 provided at the front end of the main pipe 55 are commonly attached to the seat brackets 18, 18 via the through bolts 26, 26. It's tightened.

The upper surfaces of the fuel tank 15, oil tank 21, etc. are integrally covered with a flexible rubber sheet 57. The rubber sheet 57 has outlets 58 and 59 on its upper surface for exposing the fuel inlet 19 of the fuel tank 15 and the inlet of the oil tank 21, and the periphery of the outlet 58 on the side of the fuel inlet 19 is The raised portion 6 is raised in the shape of a flange so as to be in close contact with the periphery of the fuel inlet 19.
The outer periphery of the tank cap 20 forms a lower annular recess 61 for storing a small amount of fuel that overflows from the fuel inlet 19.

The periphery of the rubber sheet 57 is extended toward the periphery of the upper opening 39 of the upper cover 38 to form a side wall 62, and the lower edge of the side wall 62, excluding the front end, is connected to the upper opening 39. A collar portion 6 that covers the peripheral edge on the rear side of the oil tank 21 in
3 are integrally formed. The rubber sheet 57 having such a structure is simply placed over the upper surfaces of the fuel tank 15 and the oil tank 21, and the cap 20, 22, it is removably positioned and fixed.

Note that openings 64, 64 are provided on the upper surface of the rubber sheet 57 to expose the load receiving portions 24, 24 of the bridge 23.

Although the cover of the above embodiment has a three-part structure consisting of a front cover, an upper cover, and a side cover, various modifications can be made, for example, by integrally molding the upper cover with the upper edge of the side cover.

In the present invention, a pair of rising portions are arranged at a distance between the lower portions thereof such that the front part of the engine of the power unit can be accommodated, and a pair of seat rails are arranged so that the space at the front is large and the space at the rear is small. The power unit is arranged so that the front part of the engine is located between the lower part of the rising part, the seat is arranged from above the rising part to above the seat rail, and the seat is arranged between the lower part of the seat and the upper part of the power unit. A storage space is formed between the parts and the seat rails,
The fuel tank is placed above the rear part of this storage space, the storage container for non-fuel items is placed above the front part, and the footrest board is placed on the back stay in front of the rising part, so there is a large space below the seat. A storage space can be formed, and a fuel tank, containers other than fuel, etc. can be stored in this storage space with plenty of room. Since the storage space is formed between the rising parts and between the seat reels, the storage space can be increased without increasing the height of the seat.

In addition, since the pair of rising parts are arranged at a distance between the lower parts thereof so that the front part of the engine of the power unit can be accommodated, the space between the backstays becomes large, and the footrest board can be made sufficiently wide. , you can comfortably place both feet on the footrest board.

Furthermore, since the pair of seat rails are arranged so that the space in front of them is large and the space in the back is small, the storage space formed between the seat rails can be made wider at the front. The width of the front part can be made sufficiently large, making it easy to obtain a stable and comfortable seat.
Easy-to-ride motorcycles and tricycles can be provided at low cost.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is an overall side view, FIG. 2 is an exploded perspective view showing the mounting structure between the frame and the cover, and FIG. 3 is a side view partially shown in cross section. FIG. 4 is a sectional view taken along the - line in FIG. 3, FIG. 5 is a plan view under the seat, and FIG. 6 is a perspective view of the rubber sheet. In the figure, 5 is a head pipe, 6 is a down tube, 8 is a back stay, 9 is a rising part, 10 is a seat rail, 15 is a fuel tank, 21 is an oil tank, 29 is a swing link, 32 is a power unit,
33 is an engine, 34 is a crankcase, 35 is a transmission case, 47 is a storage space, and 48 is a seat.

Claims (1)

[Claims] 1 A pair of left and right backstays arranged at a predetermined distance are connected to a down tube fixed to the head pipe, and a rising part that rises toward the rear upper part of these backstays is connected to the top of this rising part and extends rearward approximately horizontally. The power unit is equipped with a frame formed with a seat rail, a swinging link is pivotally mounted in the middle of each rising part, and the engine, crankcase, and transmission case are integrally connected from the front in this order. In a motorcycle or tricycle that is swingably supported on a link, a pair of rising parts are arranged at a distance between the lower parts thereof such that the front part of the engine of the power unit can be accommodated, and a pair of seat rails are arranged with a large space in front. The power unit is arranged so that the rear gap is small, the front part of the engine is located between the lower part of the rising part, the seat is arranged from above the rising part to the upper part of the seat rail, and the seat is placed between the upper part of the rising part and the seat rail. A storage space is formed between the rising part between the lower part and the upper part of the power unit and between the seat rails, a fuel tank is arranged above the rear part of this storage space, and a storage container other than fuel is placed above the front part. A two-wheeled or tricycle vehicle characterized in that a footrest board is arranged on a backstay in front of a rising part.