JPS60143189A - Car for travelling on uneven ground - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION a. Field of Industrial Application The present invention relates to an off-road vehicle capable of increasing traction force.

BACKGROUND ART Motocross vehicles, jeeps, and the like are generally used as vehicles for driving on rough terrain, muddy terrain, and other so-called rough terrain. Since better traction and steering stability are required on such uneven terrain, tricycles or four-wheeled vehicles, which are improved versions of two-wheeled vehicles, have been developed. The present invention relates to a vehicle for driving on such rough terrain.

b. Prior Art FIG. 1 shows this type of straddle-type four-wheel vehicle for traveling on rough terrain.
The front wheel 2 and the rear wheel 3 are each two-wheeled.
The tire is equipped with a so-called balloon tire 4, which has a low internal pressure and a wide contact surface with the ground.

The steering mechanism for steering the wheels 2 and 3 includes a link mechanism (
(not shown) and a handle for operating this link mechanism, a bar bundle 5 is used.

When traveling, the vehicle straddles the seat 6 while holding the bar handle 5, and turns left and right by shifting its weight left and right. However, in the above vehicle, the wheels 2 and 3 tend to slip off on snow or mud.
It may become impossible to drive.

On the other hand, caterpillar-type vehicles such as snowmobiles, large snowmobiles, and bulldozers are suitable for such rough roads, but these glazed vehicles are large and have a large amount of 711, making them easier to drive on rough terrain. A vehicle is desired.

C. Purpose of the Invention The present invention (d1) has been made in view of the above circumstances, and the purpose is to provide a vehicle for driving on rough terrain that increases gravitational force and improves handling stability. The key feature of this is that in a vehicle for running on rough terrain with two rear wheels, a support arm is extended to the rear of the vehicle body frame, and a pair of idle wheels are attached to the rear end of the support arm. A supported shaft is provided, and a V-shaped caterpillar is suspended between the rear wheel of the upper vehicle and the idle wheel.

10 Application of the present invention to a straddle-type four-wheeled vehicle Below, the present invention will be described in detail with reference to all 7 illustrated embodiments.

In FIGS. 2 and 3, IO is a straddle-type four-wheel vehicle body, which has two front wheels 12 and two rear heavy wheels 13 each mounted on a body frame H configured in a saddle-ride type. wheel 12
, 13th is 1st] 1. Balloon tires 14 are arranged, and the front wheel 12 is equipped with a handle V for operating the ψ rudder mechanism.
C (Li bar bundle 15 is adopted.

The vehicle body frame 11 has dimensions 7 and a pair of upper frames 1.1a and 1.1a and a lower frame 11b and 1 upper frame 7.
An auxiliary frame llc that connects the L/-mulia and the F section frames 11b, and an upper frame Ila.
and the auxiliary frame l that connects the lower frame 11b with each other.
id. 1. The upper frame lla is bent downward in a dogleg shape to form the lower frame llb.
The tip of the axle is connected to the tip via the axle frame lie, and the drive shaft support h plate 1 is connected to the rear end of the lower frame llb.
The rear end is connected via 6.

111 The wheels 12 are steerably supported by a U-shaped frame 17 attached to both ends of the vehicle side 1 frame lie via king pins (not shown).
2 is operated by a steering shaft 18VC that supports the bar handle 15. The vehicle is steered via a link mechanism 19.

On the other hand, the rear wheel J3 has a bearing (
It is attached to both ends of the drive shaft side, which is rotatably supported via the drive shaft (1) shown in the figure.

Power from the engine 21 is transmitted to the drive unit 21 via a power transmission device (not shown).

-1=In the -L section of the main body frame 11, there is a fuel tank 2.
2 and a seat are attached.

Reference numeral 24 denotes a pair of idle wheels arranged behind the rear wheels 13, which are mounted on both ends of a shaft 26 integrally provided with a support arm B supported by the vehicle body frame 11 (Fig. (not shown). 27 is a rubber caterpillar suspended between the rear wheel 13 and the idle wheel U as shown in FIG.

80 Operation According to the present invention having the above configuration, the idle wheel bottom rolls via the caterpillar 27 as the rear wheel 13 is driven. In this way, the vehicle functions as a six-wheeled vehicle equipped with the caterpillars 27, and it is possible to increase the traction force and improve the steering stability.

When driving on normal rough terrain, by removing the support arm 5 from the vehicle body frame 11, the idle wheel and the caterpillar 27 can be removed and the vehicle can be used as a four-wheeled vehicle.

f. Other Embodiments FIG. 5 shows another embodiment of the present invention in which the same parts as in FIG.
Suspension units 28, 29, 3 are provided for the front wheels 12, rear wheels 13, and idle wheels 23, respectively.
0 is arranged. That is, the front wheel 12 is connected to two arms 31a and 31b, one end of which is supported at the lower part of the vehicle body frame 11 via a ball joint (not shown) f3: a front wheel 12ff: an attached U-shaped arbor 17; It is suspended by a suspension unit 28 which is supported at the other end and supported at one end by the upper part of the vehicle body frame 11.

On the other hand, the rear wheel 13 and the idle wheel O are connected to the drive shaft 20 and the swing arm 3 by the swing arm 3:
3. Through 34 (7), the suspension unit 2!l is swingably supported by the vehicle body frame 11,
30 i through fL) Ff9 swing arm 33
, 34 are suspended on the vehicle body frame 11.

As a result, the rear wheel 13 and the idle wheel 23
When running with caterpillars 27 attached to the vehicle, the vehicle can freely adapt to uneven terrain.

g0 Effects of the Invention As described above, the vehicle for traveling on rough terrain of the present invention can be used as a six-wheeled vehicle equipped with caterpillars if necessary, so it can increase the traction force on rough terrain and improve the handling stability as described above. 1.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a straddle-type four-wheeled vehicle, and FIGS. 2 and 3 show an embodiment of a vehicle for traveling on rough terrain according to the present invention.
FIG. 2 is a side view, and FIG. 3 is a perspective view. FIG. 4 is a perspective view showing the caterpillar in a suspended state, and FIG. 5 is a perspective view showing another embodiment of the present invention. 10... Straddle type four-wheel vehicle body, 11-... Body frame, 12... Front wheel, 13...
...H wheels, 14 ...Balloon tires, U...
・Idle wheel, 27 ... Caterpillar, 28
, 29 , 30... Suspension unit, 33
, 34...Swing arm.

Claims (1)

[Claims] In a vehicle for running on rough terrain equipped with two rear wheels, a support arm is provided extending behind the heavy body frame, and a shaft supporting a pair of idle wheels is provided at the rear end of the support arm. There is a Caterpillar 't-M1 [type for traveling on rough terrain with heavy equipment] between the wheels and the idle wheel.
Th+].