JPS60121124A - Forward/backward changeover operating device of wasteland traveling vehicle - Google Patents

Abstract

PURPOSE:To provide the captioned device in which there is no fear of a changeover operation's immersion in muddy water as well as erroneous operation is difficult to be produced with good operatability by disposing said operation that serves to change over forward and backward movements of a wasteland traveling vehicle on the more upper part than a line connecting between upper ends of forward and backward wheels. CONSTITUTION:A forward/backward changeover lever 66 is mounted on the more upper part than a line A connecting upper ends between forward and backward wheels 10, 12, e.g., on the upper surface of a fuel tank 56, and the changeover lever 66 is connected with a shifter of a speed change gear by a cable 68. The front and back wheels 10, 12 are constructed to be wider in their widths and ultra-low pressure, so that they are subject to large floating force, eliminating the possibility of a fact that a car body is immersed below a line A connecting the upper ends of the front and back wheels 10, 12. Hereby, even with the car body immersed in muddy water, the changeover lever 66 is not immersed in muddy water, improving operatability of the captioned device. In addition, the changeover lever 66A may be provided on a handle 60.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention has a number of wheels with two wide ultra-low pressure tires,
The present invention also relates to a forward/reverse switching operation device that is applied to a vehicle for traveling on rough terrain and is capable of switching forward/reverse.

(Prior Art) There have conventionally been vehicles for running on rough terrain that have several wheels with wide ultra-low pressure tires and are equipped with a forward/reverse switching lever for switching between forward and reverse. This type of vehicle is equipped with a straddle-type seat above or above and behind the engine, but in conventional vehicles, the forward/reverse switching mechanism is integrated with the engine, so the forward/reverse switching lever is also located close to the engine. It was set up. In other words, this switching lever was provided at a relatively low position in the width of the vehicle.

This type of rough terrain vehicle may travel in muddy water, and it may be necessary to switch between forward and backward travel while the vehicle is in such muddy water. For example, if the wheels slip in muddy water, the vehicle may repeatedly move backwards and forwards, causing the vehicle to run out of the mud.

In such cases, if the switching lever is located close to the engine as in conventional vehicles, when the vehicle enters deep muddy water, this switching lever will also be submerged in the muddy water, and the switching lever will be submerged in the muddy water. There was a problem in that the position had to be searched for, resulting in poor operability.

Furthermore, in this type of vehicle width, the forward gear shift lever is usually provided below the engine, so the gear shift lever and the switching lever are close to each other. For this reason, for example, if the switching lever is operated by mistake for the gear shift lever, the transmission and the forward/reverse switching mechanism may be damaged, which is undesirable.

(Objective of the Invention) The present invention has been made in view of the above circumstances, and it improves operability since there is no risk of the switching operator being submerged in muddy water, and it also prevents erroneous operation of the switching operator and the gear shift lever. An object of the present invention is to provide a forward/reverse switching operation device for a vehicle for traveling on rough terrain, which is less prone to accidents.

(Structure of the Invention) In order to achieve this object, the present invention includes a plurality of wheels each equipped with one wide ultra-low pressure tire, a forward speed change lever provided on the lower side of the engine, and a separate body from the speed change lever. In a rough terrain vehicle equipped with a forward/reverse switching operator, the forward/reverse switching operator is arranged above a line connecting the upper ends of the respective wheels. The present invention will be described in detail below based on the illustrated embodiments.

(Embodiment) The drawings show a four-wheeled vehicle for traveling on rough terrain, which is an embodiment of the present invention, and FIGS. 1, 2, and 3 are left side views thereof.

The top view, right side view, and the fourth factor is the power system port.

In these figures, 1.0.10 is the front wheel, 12.12 is the rear wheel, and each has wide ultra-low pressure tires (gauge pressure 0).
．． 1~0.2 Kf/cnl) is installed. 14 is an engine mounted near the center of the vehicle body,
The crankcase 16 is equipped with a known constant mesh transmission 1.
8 (Fig. 4) is incorporated.

20 (20a, 20b) are a pair of left and right 7-torque levers, which protrude from below the engine 14 to the sides of the vehicle body. A foot-operated gear shift lever 22 for forward movement is located in front of the left 7-trace) 20a, and the right footless 20
A brake pedal 24 is located in front of b. By depressing or kicking up the shift lever 22, the meshing of the gears of the reverse gear 18 changes and the gear is changed.

Number 26 is the starting kick arm for the second and third reasons.

Start the engine 14 by pressing forward from above the right footrest 20b.

FIG. 3 268 shows the kick arm 26 in its depressed position, and 26b shows the retracted state. By rotating the kick arm 26 forward in this manner, interference between the kick arm 26 and the rear wheel 12 or the rear fender 64 can be avoided.

Reference numeral 30 denotes a forward/reverse switching mechanism, which is attached to the left side surface of the crankcase 16. A connecting pipe 32 is connected to the case of this mechanism 30, and a bearing tube (not shown) that supports a rear wheel shaft 34 (FIG. 4) is connected to the rear end thereof. A drive shaft 36 is inserted into the connecting pipe 32, and its front end enters the case and supports two bevel gears 38, 4.0 so as to be freely rotatable.

A slider 42 is supported slidably in the axial direction between the umbrella gears 3g and 40. A bevel gear 44 is fixed to the output shaft of the transmission 18, and the bevel gear 44 meshes with the bevel gears 38 and 40 to rotate them in opposite directions. Both end surfaces of the slider 42 and the bevel gears 38, 40 form dog clutches, and as the slider 42 slides, one of the bevel gears 38, 40 meshes with the slider 42. A shifter 46 is rotatably supported by the bin 48.

The slider 42 slides as the shifter 46 swings, and when the slider 42 meshes with the bevel gear 38, the rotation of the crankshaft 50 of the engine 14 is controlled by the clutch 52. Transmission 18. Bevel gears 44, 38. The signal is transmitted to the drive shaft 36 via the slider 42 and further transmitted to the rear wheel shaft 34 via the final reduction bevel gear 54.

The rear wheels 12 are driven in the forward direction. On the contrary, slider 42
When meshing with the bevel gear 40, the rotation of the crankshaft 50 is caused by the rotation of the bevel gears 44, 40. Since the signal is transmitted to the drive shaft 36 via the slider 42, the drive shaft 36 rotates in the reverse direction, and the rear wheels 12 are driven in the reverse direction.

In Figures 1 to 3, 56 is a fuel tank located above the engine 14, and 58 is a straddle-type seat behind it.

60 is a steering handle, 62 is a front fender, and 64 is a rear fender.

A switching lever 66 as a forward/reverse switching operator is mounted above the line A connecting the upper ends of the front wheels 10 and rear wheels 12 9, for example, on the top surface of the fuel tank 56, and this switching lever 66 is connected to the shifter 46 by a cable 68. is connected to.

Therefore, by operating the switching lever 66, the shifter 46 is swung to switch between forward and backward movement.

Note that this switching lever 66 may be placed in any other position as long as it is above line A. For example, as shown at 66A in FIGS.

In this way, the switching levers 66 and 66 are located above line A, so even if the vehicle enters muddy water.

The switching lever 66.66A cannot be submerged in muddy water by 4 degrees. That is, the front wheel 10. This is because the rear wheels 12 are wide and have extremely low pressure, so they receive a large buoyant force, and the vehicle body does not sink deeper than the line connecting the upper ends of the front and rear wheels 10 degrees 12. Therefore, even if the vehicle enters muddy water, the switching lever 66.6-
6A has good operability. Further, since it is separated from the gear shift lever 22, there is no possibility of accidentally operating both levers, and there is no risk of damaging the transmission 18 or the forward/reverse switching mechanism 30 due to an erroneous operation.

(Effect of the invention) As described above, the present invention has two forward/backward switching operators.

Since it is located above the line connecting the upper ends of each wheel, even if the vehicle body enters muddy water, the switching operation element will not be submerged in muddy water, and its operability will not deteriorate. In addition, even if the gear shift lever is submerged in muddy water, the shift lever and the switching operator are separated from each other, so there is no risk of accidentally operating them, and there is no chance of damaging the transmission or forward/forward switching mechanism. is obtained.

[Brief explanation of the drawing]

Fig. 1 is a left side view of a vehicle showing one embodiment of the present invention;
, Figure 3 is the same plan view and right side view, and the fourth factor is a power system diagram. 10...front wheel, 12...rear wheel, 14...engine. 22... Gear shift lever. 66.66A...Switching lever as a forward/reverse switching operator. A: A line connecting the tops of each wheel. Patent applicant Yamano Motor Co., Ltd. Figure 3 IJI Figure 4

Claims (1)

[Claims] A wheel with a number of d and equipped with wide ultra-low pressure tires. A forward gear shift lever provided on the lower side of the engine,
In a vehicle for driving on rough terrain, which is equipped with this gear shift lever and a separate forward/reverse switching operator. The forward/reverse switching operation device for a vehicle for traveling on rough terrain, wherein the forward/reverse switching operator is disposed above a line connecting upper yW of each wheel.