JPH03109184A - Battery mounting structure for motorcycle - Google Patents

Abstract

PURPOSE:To improve mounting strength, the degree of freedom of a knee grip forming position, and appearance by mounting a battery on a main frame so as to be covered with a fuel tank in construction. CONSTITUTION:A fuel tank 43, composed of a left and right pair of divided tanks 44 and 44 provided so that a body frame 2 can be nipped from the left and right, is supported on a main frame 4. A fore and aft pair of swollen parts 45 and 46 are formed on a surface facing to the rear half in the upper part of the left and right divided tanks 44 and 44. A battery 71 is arranged in a space between the force and aft swollen parts between the divided fuel tanks 44 and 44 to be fixed to a sheet-metal-made receiving base 72, on which many holes are formed and which is provided on the upper surface of the rear of the main frame 4, with a rubber band 73. This constitution improves supporting strength and also frees the installation position of a knee grip. Moreover appearance can be improved.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a battery mounting structure for a motorcycle.

(Prior Art) Conventionally, for motorcycles, for example, patent application No. 60-2629
There are those shown in the specification of No. 02, the right side and the drawings.

According to this, the main frame extends rearward and downward from the head pipe toward the pivot portion of the rear arm, and the fuel tank is supported by the main frame. Further, a seat rail projects rearward and upward from the rear end of the main frame, and a backstay is provided to reinforce the seat rail. A battery is attached to this backstay.

(Problems to be Solved by the Invention) By the way, since the above-mentioned battery is heavy in weight due to its structure, it is necessary to support it as firmly as possible. Therefore, it may be possible to mount the battery on the main frame, which is stronger than the backstay.

However, in this case, if the battery is simply arranged side by side with the fuel tank on the main frame, the battery may become visible and the overall appearance of the vehicle body may be impaired. In addition, concave knee grips that fit into the inner surface of the rider's knees while riding are usually formed on the left and right outer sides of the fuel tank, but when a battery is installed as described above, the knee grips are affected by this. The grip may not be formed at the desired location on the outer surface of the fuel tank.

(Objective of the Invention) This invention was made in view of the above-mentioned circumstances, and it provides strong support for the battery, prevents the appearance of the vehicle body from being impaired, and also aims to prevent the knee grip from being formed on the fuel tank. The purpose of this is to enable it to be placed in any desired position on the outer surface of the body.

(Structure of the Invention) A feature of the present invention for achieving the above object is that a battery is mounted on the main frame and the battery is covered with a fuel tank.

(for production) The effects of the above configuration are as follows.

The front end of the main frame 4 is connected to the head pipe 3,
The rear end extends toward the pivot portion of the rear arm 6, and in this case, the head pipe 3 pivots and steers the front fork 20 that supports the front wheel 21, while the rear arm 6 extends toward the pivot portion of the rear arm 6. The rear wheel 23 is supported at the moving end.

That is, the main frame 4 is directly supported by the front wheels 21 and the rear wheels 23, and constitutes the main part of the vehicle body in terms of strength, and is given sufficient strength.

Since the battery 71 is mounted on the main frame 4, the battery 71 is firmly supported.

When the battery 71 is mounted on the main frame 4 as described above, the battery 71 is covered with the fuel tank 43. Therefore, the battery 71 is prevented from being exposed.

Further, as described above, since the fuel tank 43 covers the battery 71, the outer shape of the fuel tank 43 is not affected by the battery 71 and is maintained in a desired shape.

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

In the figure, l is a motorcycle, and 2 is its body frame.

The vehicle body frame 2 has a head pipe 3 at its front part, and the front end of one main frame 4 is connected to this head pipe 3. extends downward. A pair of left and right seat pillar tubes 7.7 are provided at the rear end of the main frame 4 to protrude rearward and downward, and furthermore, rear arm brackets 8 extend forward and downward from the lower ends of each seat pillar tube 7. It is set up. The rear arm 6 is pivotally supported by a pivot shaft 9 to the left and right rear arm brackets 8.8 so as to be vertically swingable.

A pair of left and right down tubes 11.11 extend rearward and downward from the front end of the main frame 4.

The lower end of each down tube 11 is bent backward,
They are connected to the corresponding rear arm brackets 8, respectively.

The down tube 11 is divided into front and rear parts.

It is composed of a front tube 12 and a rear tube 13,
The front tube 12 extends rearward and downward from the front end of the main frame 4, and a rear tube 1 is attached to the rear end of the front tube 12.
The front end of 3 is detachably attached with a bolt 14. On the other hand, the rear end of the rear tube 13 is attached to a bolt 15.
It is detachably attached to the lower end of the rear arm bracket 8. Further, the left and right front tubes 12 12 are connected to each other by a cross tube 16 .

A pair of left and right reinforcing frames 17 , 17 extend forward and downward from the front and rear midpoints of the main frame 4 , and the lower ends of each of the reinforcing frames 17 are connected to the rear end of the front tube 12 .

A front fork 20 is pivotally supported on the head pipe 3 so as to be freely steerable. And this front fork 2
A front wheel 21 is supported at the lower end of the front fork 20, and a handle 22 is attached to the upper end of the front fork 20.

On the other hand, a rear wheel 23 is supported at the rear swinging end of the rear arm 6. Further, a shock absorber 26 is installed between the bracket 25 provided at the upper end of the seat pillar tube 7 and the front-rear midway part of the rear arm 6, and this shock absorber 26 connects the rear arm 6 from the rear wheel 23. It absorbs the impact that is about to be transmitted to the vehicle body frame 2 side.

In the above case, the main frame 4 is made of sheet metal with a box-shaped cross section,
It is directly supported by the front wheels 21 and the rear wheels 23, and constitutes the main part of the vehicle body in terms of strength, giving it sufficient strength.

Reference numeral 29 is a four-stroke parallel two-cylinder engine, and a power transmission device 30 is connected to the rear of the engine 29.

Both of these 29 and 30 include the bracket 31, the seat pillar tube 7, and
By being screwed to the rear tube 13 by bolts 32 and connected to the pivot shaft 9, it is firmly supported by the down tube 11, 11 and the vehicle body frame 2.

The rear wheels 23 are interlocked and connected to the power transmission device 30 by a chain transmission means 33, and the power of the engine 29 is transmitted to the rear wheels 23 via the power transmission device 30 and the chain transmission means 33.

The intake boat of each cylinder 36 of the engine 29 includes:
Carburetors 37, each serving as a fuel supply device, are arranged in series, and each of these carburetors 37 is located between the main frame 4 and the cylinder 36 when viewed from the side.

On the other hand, an air cleaner 3 is installed on the front upper surface of the main frame 4.
8 is attached, and this air cleaner 38 is composed of a cleaner case 39 and an element 40 housed in this cleaner case 39. The lower end of this cleaner case 39 is connected to each carburetor 37 by an intake pipe 41.
After the outside air passes through the element 40 and is filtered, it passes through the carburetor 37 and is drawn into the engine 29.

In the above case, each reinforcing frame 17 is located outside of the cylinder 36 and the carburetor 37 so that they do not overlap in the front and back directions.

A pair of left and right exhaust pipes 42.4 from the front of the engine 29
2 are extended, and each of these exhaust pipes 42 extends rearward passing through the outer side of the left rear tube 13, and the rear end sides are connected to each other and integrated, and the rear end becomes a muffler 42a.

A fuel tank 43 is supported on the main frame 4. This fuel tank 43 consists of a pair of left and right divided tanks 44 and 44 provided so as to sandwich the vehicle body frame 2 from the left and right sides.
The upper part of each divided tank 44 is located above the main frame 4 in side view, and the left and right divided tanks 44.4
The air cleaner 38 is disposed between the front half of the upper part of the air cleaner 4. In addition, the same left and right divided tank 44
．． A pair of front and rear bulges 45 and 46 are formed on the opposing surfaces of the rear half of the upper portion of the 44, respectively.

Each of the front bulges 4 of the left and right divided tanks 44 and 44
A connecting piece 47 is protruded from each of the left and right connecting pieces 47, 47, and these left and right connecting pieces 47, 47 are screwed together with bolts 48. On the other hand, the lower end of each divided tank 44 is screwed to the rear tube 13 with a bolt 50 via a buffer material 49, and in this way, the fuel tank 43
is firmly supported on the main frame 4.

51 is a fuel injection cap, which is attached to each divided tank 4.
4, respectively. Further, a fuel cock 52 is provided at the lower end of each of the divided tanks 44, and the carburetor 37
The fuel in the divided tank 44 is supplied to.

An auxiliary fuel tank 55 corresponding to the fuel tank 43 is provided. The front upper part of this auxiliary fuel tank 55 is screwed to the bracket 25 with a bolt 56, and the front lower part of the auxiliary fuel tank 55 extends rearward and upward from the connection part between the seat pillar tube 7 and the rear arm bracket 8. The protruding stay 57 is fastened together with the rear part of the exhaust pipe 42 by a bolt 58, thereby firmly supporting the auxiliary fuel tank 55 on the vehicle body frame 2. Also, 59 is a fuel injection cap; The fuel in this auxiliary fuel tank 55 is also supplied to the carburetor 37 as appropriate.

A seat 61 is provided on the auxiliary fuel tank 55.

A locking piece 62 is provided protruding from the lower front surface of the seat 61.
This locking piece 62 is removably locked to a locking metal fitting 63 protruding from the upper front surface of the auxiliary fuel tank 55. On the other hand, the rear portion of the seat 61 is removably screwed to the rear of the auxiliary fuel tank 55 with bolts 64, that is, the seat 61 is removably attached to the auxiliary fuel tank 55. Further, in this case, a rubber cushioning material 65 is interposed between the upper surface of the auxiliary fuel tank 55 and the seat 61, and this cushioning material 65 extends from the fuel tank 43 to the seat 61.
absorbs the shock that is about to be transmitted to the body.

A footrest 68 on which a rider 67 on the seat 61 rests his or her feet is provided protruding from the outer surface of each rear arm bracket 8. Furthermore, concave knee grips 69 into which the inner surfaces of the knees of the rider 67 fit are formed on each outer surface of the rear portion of the fuel tank 43.

A battery 71 is provided in the space between the front bulging part 45 and the rear bulging part 46 of each of the divided tanks 44, that is, the battery 71 is covered by the rear part of the fuel tank 43.

Further, the battery 71 is mounted on the main frame 4 in the following manner. That is, a pedestal 72 made of sheet metal and having a large number of holes is attached to the rear upper surface of the main frame 4, and a battery 71 is housed in this pedestal 72. Rubber bands 73, which are removably attached to the left and right upper edges of the pedestal 72, hold the battery 71 on the pedestal 72.
held within. Further, in the above case, a rubber cushioning material 74 is interposed between the battery 71 and the pedestal 72, and this cushioning material 74 is inserted into the battery 71 from the main frame 4 side.
absorbs the shock that is about to be transmitted to the body.

The sheet 6 is located between the front bulge 45 and the rear bulge 46.
1, and therefore the battery 71 cannot be seen from the fuel tank 43 and the seat 61.
This is reliably prevented. Further, in this case, the front lower surface of the seat 61 is in contact with the rear edge of the battery 71,
Thereby, the battery 71 is held in the pedestal 72 more reliably.

The battery 71 is located between the left and right knee grips 69. That is, the heavy fuel tank 43 and the rider 6
7 and the battery 71 are located close to each other to achieve mass concentration. Additionally, the heavy battery 71 is supported on the rear end of the main frame 4, and this location is close to the pivot point of the rear arm 6 relative to the rear arm bracket 8, which is advantageous in terms of maneuverability. Additionally, 75 is a cowling, and this cowling 75 is provided to cover the front and both sides of the vehicle body.

(Effect of the invention) According to this invention, there are the following effects.

That is, the main frame is directly supported by the front wheels and the rear wheels, constitutes the main part of the vehicle body, and is given sufficient strength.

In the present invention, the battery is mounted on the main frame, so that the battery is firmly supported.

When installing the battery on the main frame as described above, covering the battery with the fuel tank prevents the battery from being exposed, which means that the exterior appearance of the vehicle body is maintained in good condition. It will be done.

Further, as described above, since the fuel tank covers the battery, the outer shape of the fuel tank can be maintained in a desired shape. In other words, the knee grip can be formed at a desired position on the outer surface of the fuel tank.

Further, according to the above configuration, since the fuel tank and battery are located very close to each other, mass concentration can be effectively achieved and maneuverability can be improved.

[Brief explanation of drawings]

The figures show an embodiment of the present invention; FIG. 1 is a partially enlarged partial sectional view of FIG. 2; FIG. 2 is a partially cutaway side view of the entire motorcycle; and FIG. It is a sectional view taken along the line -III. l...Motorcycle, 2...Body frame, 3...Head pipe, 4...Main frame, 6...Rear arm, 21...
・Front wheel, 23.. Rear wheel, 29. Engine, 43.. Fuel tank, 69.. Knee grip, 71.. Battery.

Claims (1)

[Claims] 1. A main frame is provided, the front end of which is connected to the head pipe, and the rear end of which extends toward the pivot point of the rear arm, and a fuel tank is supported on this main frame, while a battery is provided on the main frame. A motorcycle battery mounting structure in which a battery is attached and the battery is covered with a fuel tank.