JPH0577554B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A. Object of the Invention (1) Industrial Application Field The present invention relates to a saddle-ride type vehicle suitable for traveling on uneven ground such as snow or rough ground.

(2) Prior Art A saddle comprising a steerable front wheel and a pair of left and right rear wheels that are arranged side by side with an interval in the left-right direction of the vehicle body and can be driven respectively, and each wheel is equipped with a balloon tire. Ride-on vehicles are known in the art.

(3) Problems to be Solved by the Invention In order to improve the running characteristics of such a straddle-type vehicle, especially under severe conditions, it is desirable that the vehicle be able to exert high driving force from the drive wheels while being lightweight. Balloon tires have a low internal pressure and a relatively large ground contact area, so the ground contact pressure tends to be low, and this is one obstacle in obtaining high driving force.

The present invention has been proposed in view of the above, and is capable of exerting high driving force even though it uses wheels with balloon tires, is easy to maintain the battery, and is also effective in preventing deformation of exhaust system parts due to external forces. The purpose is to provide an effective straddle-type vehicle.

B. Structure of the Invention (1) Means for Solving the Problems In order to achieve the above object, the present invention provides a front wheel that can be steered, and left and right wheels that are arranged side by side with an interval in the left and right direction of the vehicle body and that can be driven respectively. In a straddle-type vehicle equipped with a pair of rear wheels, each wheel having a balloon tire attached, the battery is placed behind and above the rear axle so that at least a portion of the battery is within the opposing gap between the left and right rear wheels. At the same time, the battery is supported on the vehicle body frame, and a U-shaped carrier that surrounds both left and right sides and rear surface of the battery is fixed to the vehicle body frame, and the battery and one of the batteries are located below the carrier. It is characterized by the fact that exhaust system parts are placed between it and the rear wheels.

(2) Effect According to the above configuration, the weight of the battery, which is a heavy component, can be borne mainly on the rear wheels via the rear axle, even though the rear wheels are equipped with balloon tires and have a relatively wide ground contact surface. First, the ground contact pressure can be increased, and as a result, high driving force is exerted by the rear wheels.

Also, remove the battery from the rear and above the rear axle.
Since it can be placed in a location that is easily accessible to workers, it is easy to handle when assembling the battery, maintaining it, etc. Furthermore, by interposing at least a portion of the battery in the opposing gap between the left and right rear wheel bars, the opposing gap can be used more effectively.

Furthermore, since the exhaust system parts are disposed below the carrier and between the battery and one of the rear wheels, the battery and one of the rear wheels prevent external forces from acting on the exhaust system parts in the left and right direction. , and can effectively prevent external forces from acting on the carrier from above.

(3) Embodiment An embodiment of the present invention will be described below with reference to the drawings.

A front fork 2 is supported in a steerable manner on a head pipe 1 of the vehicle body frame, which is generally designated by the symbol F. A front wheel Wf with a balloon tire 3 is mounted on a shaft at the bottom of the front fork 2.
The upper surface of Wf is covered by a front fender 4 supported by the front fork 2. A steering handle 5 is provided at the upper end of the front fork 2, and a headlight 6 is provided in front of the upper part of the steering handle 5.
is supported.

The main part Fm of the vehicle body frame F is constituted by a press frame formed by combining press-formed plates, and a rear axle 7 is horizontally suspended at the rear of the main part Fm. At both ends of the rear axle 8 that is supported, there are a pair of driveable left and right rear wheels with balloon tires 3.
The rear wheels Wr are supported, and the upper surfaces of these rear wheels Wr are each covered by a rear fender 9.

A driving engine E is supported on the vehicle body frame F between the front and rear wheels Wf, Wr, and the output shaft 10 of this engine E and the rear axle 8 are connected by a chain transmission mechanism 12. As a result, the rear wheels Wr are driven. The chain transmission mechanism 12 is covered by a chain transmission case 13 supported on one side of the main body portion Fm. A brake device 14 is disposed on the other side of the main body portion Fm, facing the chain transmission case 13, and when the brake device 14 operates, the rear wheels
The brakes can now be applied to Wr.
A skid plate 15 is fixed to the lower surface of the main component Fm, and this skid plate 15
Extending to the left and right from Fm, the chain transmission case 1
3 and the lower surfaces of the brake device 14.

The intake system In of the engine E extends in the longitudinal direction along one side of the vehicle body frame F in the left and right direction (the left side in the direction of vehicle travel), and this intake system In is connected to the intake pipe 16 connected to the intake port of the engine E. A carburetor 17 is interposed in the middle, and an air cleaner 18 is connected to the outer end of the carburetor 17.
The inlet is communicated with an air cleaner duct formed within the main body portion Fm of the vehicle body frame F.

Further, the exhaust system Ex of the engine E extends in the longitudinal direction along the other side surface in the left and right direction of the vehicle body frame F (the right side surface in the direction of vehicle movement), and this exhaust system Ex is connected to the exhaust port of the engine E. An exhaust muffler 20 is connected to the rear end of the exhaust pipe 19. This exhaust muffler 20 is equipped with a spark arrester 21 for stopping sparks from spreading.

A battery box 26 is attached to the rear end of the main body portion Fm of the vehicle body frame F made of a press frame. Next, the mounting structure will be described. A support piece 22 is integrally provided on the rear end surface of the main body portion Fm, and a pair of grommet-shaped rear mount rubbers 23, 23 are fitted into this support piece 22.
Further, a pair of left and right grommet-shaped side mount rubbers 24, 24 are fixed to both rear side surfaces of the main body portion Fm by bolts 25, 25, respectively. Some of the rear mount rubbers 23, 23 have support pins 2 protruding from the bottom of the battery box 26.
7 and 27 are fitted, and the side mount rubber 2
Attachment stays 28, 28 fixed to both front sides of the battery box 26 are fitted into the holes 4, 24.
As described above, at the rear of the main body part Fm of the vehicle body frame F, the battery box 26 is located behind and above the rear axle 8, and at least a part of the box 26 is located opposite to the left and right rear wheels Wf and Wr. It is fixedly supported so as to be interposed in the gap, and a battery B is housed in this battery box 26.

The exposed upper part of the battery B is covered with a cover 29. One side of the cover 29 is fixed to the battery box 26 with a thumbscrew 30, and the other side is hung on the battery box 26 with a stopper rubber 31. be stopped. Therefore, the rear end surface of the battery box 26 does not protrude further rearward than the rear surface of the rear wheel Wr.

Further, a carrier pipe 32 serving as a carrier is attached to the rear end of the vehicle body frame F, and the carrier pipe 32 is U-shaped in plan view. The battery box 26 is protected by a carrier pipe 32. Furthermore, a tool box 33 is provided on one side of the carrier pipe 32.

The exhaust muffler 20 and spark arrester 21 as exhaust system parts are disposed below the carrier pipe 32 and between the battery box 26 and the right rear wheel Wr.
21 can be effectively prevented from being applied by the battery box 26 and the right rear wheel Wr, and by the carrier pipe 32 from the external force being applied from above. Deformation of parts 20 and 21 due to external forces is prevented.

In the figure, 34 is the fuel tank, 35 is the seat, and 36
37 is a change pedal, and 38 is a brake arm.

C. Effects of the Invention As described above, according to the present invention, in a straddle-type vehicle with balloon tires, at least a portion of the battery is located behind and above the rear axle within the opposing gap between the left and right rear wheels. Since the batteries are arranged so as to be interposed between the tires and the batteries are supported on the vehicle body frame, the weight of the batteries, which are heavy parts, can be mainly borne by the rear wheels via the rear axle. Even though the ground contact surface is relatively wide, the ground contact pressure can be increased, so the vehicle body can be efficiently driven through the rear wheels, and the battery can be used as a weight to increase the rear wheel ground pressure. Since it can be used as a means, it can contribute to simplifying the structure and reducing the weight of the vehicle. In addition, since the battery can be placed behind and above the rear axle in a location that is easily accessible to workers, this contributes to improved ease of assembly and maintenance of the battery. By interposing at least a portion of the battery within the opposing gap between the wheels, the opposing gap can be used more effectively.

In particular, the U-shaped carrier that surrounds both left and right sides and rear surface of the battery is fixed to the vehicle body frame, and the exhaust system parts are placed below the carrier between the battery and one of the rear wheels. The battery and one of the rear wheels effectively prevent external forces from acting on the system parts in the left and right directions, and the carrier effectively prevents external forces from acting from above. This is effective in preventing deformation of exhaust system parts due to external forces. Moreover, since the carrier can also be used as a battery protection means, it can contribute to the simplification of the structure.

[Brief explanation of the drawing]

The drawings show an embodiment in which the present invention is applied to a straddle-type three-wheeled vehicle, and FIG. 1 is a plan view thereof, FIG. 2 is a left side view thereof, FIG. 3 is a right side view thereof, and FIG. 5 is a sectional view taken along the line - - of FIG. 4, FIG. 6 is a sectional view taken along the line - - of FIG. 4, and FIG. 7 is a plan view of FIG. 6. B...Battery, F...Body frame, Wf...
...Front wheel, Wr...Rear wheel, 3...Balloon tire, 8...Rear axle, 20, 21...Exhaust muffler as exhaust system parts, spark arrester, 26...
Batteri Box, 32...Carrier pipe as a carrier.

Claims (1)

[Claims] 1. A front wheel Wf that can be steered, and a pair of left and right rear wheels Wr that are arranged side by side with an interval in the left-right direction of the vehicle body and can be driven respectively, each wheel Wf, Wr is equipped with a balloon tire 3. In a straddle-type vehicle, a battery B is disposed behind and above the rear axle 8 so that at least a part of the battery B is interposed in the opposing gap between the left and right rear wheels Wr, and the vehicle body frame F A U-shaped carrier 32 that supports the battery B and surrounds both left and right sides and rear surface of the battery B is fixed to the vehicle body frame F, and below the carrier 32, the battery B and one of the rear wheels are connected to each other.
A straddle-type vehicle characterized in that exhaust system parts 20 and 21 are arranged between Wr and Wr.