JPH0224396Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention provides a forward/reverse switching device for a vehicle that is equipped with a manual forward/reverse switching operator and a manual throttle operator provided on a steering bar handle. It is related to.

(Prior Art) Some vehicles have a manual throttle operator on the steering bar handle, and are equipped with a manual forward/reverse switching operator for switching between forward and reverse travel. In this type of vehicle, if you switch between forward and reverse without reducing the vehicle's speed sufficiently,
Sudden impact may be applied to the gears and shafts of the forward/reverse switching mechanism, causing damage to them.

(Purpose of the invention) The present invention was developed in view of the above circumstances, and is intended to prevent the vehicle from switching between forward and backward travel without reducing its running speed sufficiently, and to reduce the impact caused by the impact when switching between forward and backward travel. To provide a forward/reverse switching device for a vehicle that does not damage gears, shafts, etc.

(Structure of the invention) According to the present invention, the object is to provide a vehicle equipped with a manual forward/reverse switching operator and a manual throttle operator provided on a steering bar handle. A forward/reverse switching device for a vehicle is achieved, characterized in that a throttle operator and a throttle operator are disposed on the same side and apart from each other with respect to a center line passing in the longitudinal direction of the vehicle body so that they cannot be operated at the same time. The present invention will be explained in detail below based on the illustrated embodiments.

(Embodiment) Fig. 1 is a right side view of a four-wheel vehicle for traveling on rough terrain to which an embodiment of the present invention is applied, Fig. 2 is a plan view thereof, and Fig. 3 is a power system diagram.

In these figures, numerals 10 and 10 are the front wheels, and 12 and 1 are the front wheels.
2 is the rear wheel, each of which is equipped with a wide ultra-low pressure tire. A known constant-mesh transmission 18 (Fig. 3) is built into the crankcase 16 of the engine 14 mounted near the center of the vehicle body, and its foot-operated gear shift lever 20 (Fig. 2) is connected to the crankcase. It is attached to the left side of 16. 22, 22a, 22b are crankcase 1
These are a pair of left and right footrests that protrude from below to the left and right. A forward/reverse switching mechanism 24 is mounted on the right side of the crankcase 16, and the case is connected to a bearing tube 30 that supports a rear wheel shaft 28 through a connecting tube 26.
is connected to. A drive shaft 32 is inserted through the connecting cylinder 26, and its front end enters the forward/reverse switching mechanism 24, where the bevel gears 34, 36 are held freely rotatable. An axially slidable slider 38 is held on the drive shaft 32. These bevel gears 34 and 36 are connected to a transmission 18.
A bevel gear 40 fixed to the output shaft (secondary shaft) of the bevel gear 40 meshes with the bevel gear 40, and both bevel gears 34 and 36 rotate in opposite directions. A dog clutch is formed on the opposing surfaces of both bevel gears 34, 36 and the slider 38, and one of the clutches is selectively engaged as the slider slides.

An annular groove (not shown) provided in the slider 38 has a shifter 44 fixed to the lower end of the shift shaft 42.
The lever 4 is engaged with the upper end of the shift shaft 42.
6 is fixed.

Reference numeral 48 denotes a switching lever that is attached to the upper right side of the crankcase 16 and serves as a forward/reverse switching operator that can swing in the front/rear direction. This lever 48 is connected to the lever 46 on the shift shaft 42 side by a link 50.
is connected to.

In FIGS. 1 and 2, 52 is a front fender, 54 is a rear fender, 56 is a fuel tank located above the engine 14, and 58 is a straddle-type seat located behind it. Reference numeral 60 is a steering bar handle that rotates left and right, and a grip 62 on the right side thereof is a rotatable throttle operator. That is, the grip 62 is provided on the same side (right side) as the switching lever 48 with respect to the longitudinal centerline of the vehicle body, and spaced apart from each other. This grip 62 is provided with the habit of returning to rotation in the direction of closing the throttle valve (not shown) of the carburetor.

Therefore, if the driver tilts the switching lever 48 forward with his right hand, the link 50, lever 46, and shift shaft 42
Shifter 44 is rotated clockwise in FIG. 3 via , and slider 38 engages bevel gear 34 with a dog clutch. Therefore, the crankshaft 6 of the engine 14
4 is transmitted to the drive shaft 32 via the clutch 66, transmission 18, bevel gears 40, 34, and slider 38, and the rotation of this drive shaft 32 is transmitted to the drive shaft 32 via the clutch 66, transmission 18, bevel gears 40, 34, and slider 38.
is transmitted to the rear wheel shaft 28 via the rear wheel shaft 28, and the rear wheels 12 rotate in a direction that moves the vehicle forward (clockwise in FIG. 1). By rotating the grip 62 and operating the speed change lever 20, the vehicle can move forward at an appropriate speed.

When switching to reverse, the right hand is released from the grip 62 and the switching lever 48 is pushed backward. When the grip 62 is released, it returns to the direction that closes the throttle valve, so the rotation of the engine 14 quickly decreases. By tilting the switching lever 48 backward, the slider 38
moves rearward, is released from engagement with bevel gear 34, and engages with bevel gear 36. At this time, since the engine 14 rotates at a low speed, the impact caused by the switching is small, and the gears, shafts, etc. are not damaged. In this state, the rotation of the crankshaft 64 is transmitted to the drive shaft 3 through the clutch 66, the transmission 18, the bevel gears 40, 36, and the slider 38.
2 to rotate in the opposite direction, and the rear wheel 12
rotates in the backward direction.

(Effects of the invention) As described above, the present invention arranges the manual throttle operator and the manual forward/reverse switching operator apart from each other on the same side with respect to the center line passing in the longitudinal direction of the vehicle body. Since the throttle operator is provided so that both cannot be operated at the same time, the throttle operator is always removed from the throttle operator when operating the forward/reverse switching operator, resulting in a decrease in engine rotation. For this reason, the impact when switching between forward and backward travels is reduced, resulting in the effect that gears, shafts, etc. will not be damaged.

[Brief explanation of drawings]

FIG. 1 is a right side view of a vehicle to which an embodiment of the present invention is applied, FIG. 2 is a plan view, and FIG. 3 is a power system diagram. 48...Switching lever as a forward/reverse switching operator, 60...Steering bar handle, 62...Grip as a throttle operator.

Claims (1)

[Scope of utility model registration request] In a vehicle equipped with a manual forward/reverse switching operator and a manual throttle operator provided on the steering bar handle, the vehicle body is designed such that the forward/reverse switching operator and the throttle operator cannot be operated at the same time. 1. A forward-reverse switching device for a vehicle, characterized in that the devices are disposed on the same side and spaced apart from each other with respect to a center line passing in the front-rear direction.