JPS6251196B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a motorcycle with improved handling stability and efficiency of equipment space.

Generally, in motorcycles, a battery storage section is provided below the seat or on the side of the seat bottom. This is because it is easy to secure equipment space to store batteries, which occupy relatively large space and are heavy. However, placing the battery in such a location is not necessarily optimal for balancing the front and rear wheel load distribution.
In particular, it is difficult to achieve the above balance in a motorcycle equipped with a V-type engine. In other words, when a V-type engine is installed, the slope of the front cylinder inevitably increases, so the dimension from the center of the crank to the front end of the cylinder head becomes longer. This is because a radiator is installed in the engine, so the distance from the front wheels to the center of the crank is longer than in a parallel engine. This means that if the wheelbase of the vehicle is the same as that of a regular car, the engine will be positioned relatively toward the rear, which reduces the load on the front wheels and improves handling stability at high speeds. This causes a problem of instability.

On the other hand, as is generally known, in motorcycles, due to structural or design constraints,
The various components had to be arranged within an extremely limited equipment space, and as a result, various difficulties were involved in achieving an appropriate load distribution balance, making it impossible to achieve this.

The present invention was made in view of the above circumstances, and it is an object of the present invention to provide a motorcycle that uses a heavy battery to balance the load distribution between the front and rear wheels, thereby improving handling stability. Hereinafter, the configuration and the like will be explained in detail using an example shown in the drawings.

FIG. 1 is a partially cutaway side view of a motorcycle according to the present invention, and FIG. 2 is a cross-sectional view along line AA and line B-B showing the main parts thereof. In these figures, the reference numeral 1 indicates a V-type engine mounted on this motorcycle, which has a front cylinder 1a and a rear cylinder 1b that are inclined forward and backward, respectively, and constitutes a part of the frame. It is arranged between two side tubes. Reference numeral 3 denotes a fuel tank, and this fuel tank 3 has a fuel storage space with an inverted U-shaped cross section, and a concave portion 5 that opens downward and faces an air chamber 4, etc., which will be described later, is formed at a slightly rearward portion of the fuel tank 3. ing. This fuel tank 3 is arranged on a pair of tank rails 6. 7 and 8 are each cylinder 1 of the V-type engine 1
Intake passages 7 and 8 extend upward from a and 1b, respectively, and a carburetor is attached to each of the intake passages 7 and 8, and the tips thereof are connected to the air chamber 4. Reference numeral 9 denotes an air filter element disposed within the air chamber 4, and its internal space is open to the outside air through intake ports 10 provided on both sides of the air chamber 4.

A battery 15 is disposed between the intake passages 7 and 8 and above the crankshaft center CC of the engine 1.
As shown in FIG. 2A, the battery box 17 is supported by a battery box 17 attached to a bracket 16 fixed to the tank rail 6, and is held tightly by a fastening band 18. Therefore, in order to remove this battery 15 from the vehicle, first remove the bolt 19.
This is done by removing the battery box 17 from the machine and then removing the fastening band 18. In the figure, reference numeral 21 indicates a radiator for cooling the engine, 22 and 23 indicate exhaust pipes, and 24 indicates a muffling box.

FIG. 3 is a partial side view and a cross-sectional view taken along line b-b showing another embodiment of the present invention, in which the same members or parts as in the embodiment shown in FIGS. 1 and 2 are given the same reference numerals. The explanation thereof will be omitted. That is, in this embodiment, an air cleaner 26 and a connecting pipe 27 connecting the air cleaner 26 and the air chamber 4 are arranged between the intake passages 7 and 8, and the battery 15 is connected between the intake passage 7 and the steering head pipe. It was arranged between 28 spaces. The external space of the air filter element 9 constituting the air purifier 26 is opened to the outside air through an intake port (not shown) opened in the wall of the outer case, and the internal space is opened to the outside air through the connecting pipe 27 and the air chamber 4. It is connected to the open ends of the passages 7 and 8. On the other hand, the battery 15 is attached via a bracket 30 provided on a side stay 29 that connects the side tube 2 and the tank rail 6.

FIG. 4 is a partial side view showing another embodiment of the present invention. In this embodiment, the battery 15 is connected to the intake passages 7 and 8 similarly to the embodiment shown in FIGS.
A relatively lightweight air purifier 26 is placed below the rear seat 35 of the engine. Note that this embodiment is a substantial combination of the embodiment shown in FIGS. 1 and 2 and the embodiment shown in FIG. However, detailed explanation will be omitted.

As explained above, according to the present invention, since the battery is disposed using the recessed part of the fuel tank or the space between the intake passages in the case of a V-type engine, the battery can be installed without particularly changing the overall arrangement of components. Moreover, it is possible to balance the load distribution between the front and rear wheels without impairing the design, and therefore it is possible to improve steering stability.

[Brief explanation of the drawing]

FIG. 1 is a side view of a motorcycle according to the present invention, and FIG. 2 is a cross-sectional view taken along line AA and line B-
B sectional view and FIG. 3 are partial side views showing another embodiment, and bb sectional views and FIG. 4 are partial side views showing still another embodiment. 1...Engine, CC...Crankshaft center, 3
...fuel tank, 5 ... recess, 7, 8 ... intake passage, 15 ... battery.

Claims (1)

[Claims] 1. The battery 15 is arranged in front of the crankshaft center CC of the V-type engine 1, which has cylinders 1a and 1b inclined forward and backward, and so that its upper part faces the lower concave part 5 of the fuel tank 3. A motorcycle characterized by: