JPH0358932B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a motorcycle in which the mounting position of a battery is improved.

In general, to improve engine performance,
In order to reduce intake noise, it is desirable to increase the volume of the air cleaner. However, in the case of conventional motorcycles, due to the design, in addition to the air cleaner, batteries, etc. were installed in the inverted triangular space formed by the body frame member under the seat, so it was not possible to increase the volume of the air cleaner. Therefore, it has the disadvantage that it is not possible to improve engine performance and it is difficult to reduce intake noise. Particularly in the case of recent motorcycles in which a shock absorber for cushioning the rear wheel is arranged in this inverted triangular space, this drawback is significant because the space available for installing an air cleaner becomes even smaller. In addition, conventional motorcycles had a heavy battery installed in this inverted triangular space, which resulted in the disadvantage that the center of gravity of the vehicle body was not easily located.

The purpose of this invention is to eliminate these drawbacks by increasing the volume of the air cleaner without compromising the design of the vehicle body, improving engine performance and reducing intake noise, and lowering the center of gravity of the vehicle body. The aim is to provide motorcycles with improved performance.

Embodiments of the present invention will be described below based on the drawings.

In the figure, a motorcycle 11 has a body frame 13 and a front fork 17 supported by a steering shaft tube 15 at the front end. The vehicle body frame 13 includes a down tube 21 that extends downward from the steering shaft tube 15 and supports the front part of the engine 19, a main pipe 23 that extends rearward from the steering shaft tube 15 and supports the rear end of the engine 19, and a main pipe 23 that extends backward from the steering shaft tube 15 to support the rear end of the engine 19. A back stay 25 is fixed to the rear end of the pipe 23 and extends toward the rear upper part, and a main pipe 23 and a back stay 25 are attached to the upper part of the vehicle body.
It consists of a seat rail 27 and a seat rail 27 installed therein.

29 is an air cleaner, main pipe 2
3. It is provided in an inverted triangular space formed by the backstay 25 and the seat rail 27. This air cleaner 29 is connected to the intake pipe duct 31.
It is connected to the vaporizer 33 via. The front fork 17 has a front wheel 35 and a fender 37 for the front wheel 35 at its lower end.

The main pipe 23 is composed of a pair of main pipe members 45, 45, and brackets 47, 47 are welded to the main pipe members 45, 45, respectively. Reference numeral 39 denotes a rear arm member constituting the rear arm 40, the front end of which is pivotally supported by the brackets 47, 47 about the bolt 43 as an axis. Bolt 43 is connected to engine 1 at the same time.
The brackets 47, 47 are screwed onto the rear end of the crankcase 41 of No. 9. Reference numeral 43 denotes a rear wheel, which is pivotally supported at the rear of the rear arm 40. In addition,
The pair of main pipe members 45, 45 are connected at their rear ends by welding via a cross member 49. Reference numeral 51 denotes a plate-shaped battery mounting upper bracket, which is connected to the pair of main pipe members 45,
45, and both ends thereof are welded to each main pipe member 45, 45. Further, 52 is a lower battery mounting bracket, which is welded to the cross member 49. 55 is a fitting for screwing the battery case 53, and is welded to the battery mounting upper bracket 51;
Numerals 7 and 57 are gussets for maintaining the strength of the rear arm 40, which are disposed between the rear arm members 39 and 39, and whose opposite ends are connected to each rear arm member 39, 39.
It is welded to 9. In addition, gussets 57, 57
A U-shaped cutout 61 is provided at the front of the battery 59 for placing the battery 59 therein.

The battery case 53 made of synthetic resin and used to house the battery 59 consists of a lid 63 and a lower case body 65, with an upper mounting piece 67 on the upper surface of the lid 63 and a lower mounting piece on the lower surface of the lower case body 65. 6
9 are each integrally molded. This battery 5
The battery case 53 containing the battery 9 is located near the rear of the crankcase 41 through the gusset 57.
The upper mounting piece 6 is loosely fitted into the notch 61 of
7 is screwed onto the fixture 55 of the battery mounting upper bracket 51, and a lower mounting piece 69 is screwed onto the battery mounting lower bracket 52, thereby being removably attached to the vehicle body frame 13. Since the battery 59 is housed in the battery case 53 and attached to the vehicle body frame 13 in this way, the battery 53 can be easily attached and detached, and
Failure of the battery 59 can be prevented without rainwater or mud splashing onto the battery 59. Note that 71 is a shock absorber arranged in an inverted triangular space to buffer the rear wheel 43, and its rear end is pivotally supported by the upper end of the rear arm 40.

In this invention, the battery 59 is attached and detached by first storing the battery 59 in the battery case 53, then pulling the battery case 53 under the vehicle body frame 13, and attaching the upper mounting piece 67 of the case to the mounting tool 55 of the battery mounting upper bracket 51. The lower mounting piece 69 of the case 53 is screwed on.
It is attached by screwing it onto the battery attachment lower bracket 52, and removed by doing the reverse operation.

As described above, the present invention provides a motorcycle in which a crankcase of an engine is supported on a body frame, and a rear arm made up of a pair of rear arm members is swingably supported below the body frame. A battery case placed behind the rear arm member and between the pair of rear arm members is attached to the vehicle body frame, and the battery is stored in the battery case. It is no longer necessary to install a battery in the inverted triangular space of the frame, and the volume of the air cleaner can be increased without compromising the design of the car body.As a result, engine performance is improved and intake noise is reduced. I can do it.

Additionally, since the heavy battery is installed at the bottom of the vehicle body frame, the vehicle body is more stable and maneuverability and maneuverability are improved.

Furthermore, because the battery is surrounded by the engine crankcase in front and the rear arm members on the left and right, it is less likely to be damaged by stones flying off the road while driving, and will not be damaged even if the vehicle falls. Hateful.

[Brief explanation of drawings]

FIG. 1 is a front view of an embodiment of the present invention, FIG. 2 is an enlarged view of the same part with some parts omitted, and FIG. 3 is a sectional view of a main part taken along the line -- in FIG. 2. 11...Motorcycle, 13...Body frame, 19...
...Engine, 39...Rear arm member, 41...
Crank case, 53...Battery case, 5
9...Battery.

Claims (1)

[Claims] 1. In a motorcycle in which a crankcase of an engine is supported on a body frame, and a rear arm consisting of a pair of rear arm members is swingably supported below the body frame, A battery mounting device for a motorcycle, characterized in that a battery case disposed between rear arm members is attached to the vehicle body frame, and a battery is stored in the battery case.