JPH0313113Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The invention is mainly applied to a manually operated transmission in a bar handle type automatic three-wheeled vehicle or four-wheeled vehicle for traveling on rough terrain. It relates to a switching device.

(Prior Art) The applicant of the present application has previously proposed a device of this type, for example, as seen in Japanese Patent Application No. 57-179778 (Japanese Unexamined Patent Publication No. 59-69551), in which a device is installed in the middle of a vehicle body having front and rear wheels. An engine is provided, and a footrest step for a passenger is provided on the outside of the engine, and a transmission is provided in the crankcase of the engine, and an operating lever of the transmission is made to protrude upward from the side of the case. The lever is provided so as to be swingable, and the lever is tilted back and forth by grasping the knob at the upper end thereof, so that the transmission can be switched between, for example, two forward speeds and one reverse speed; proposed a guide member provided outside the transmission.

(Problems to be solved by the invention) In the above device, when an operation guide mechanism for the operation lever is provided, it is necessary to prevent the operation lever and the guide member from protruding too much from the crankcase, and Considering that the passenger will reach out and grasp the transmission from above while on board, it is desirable that the guide mechanism be small, installed inside the transmission, and configured so that it can be easily switched from above. It can be done.

An object of the present invention is to provide a device that meets such demands.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides an engine in the middle of a vehicle body having front and rear wheels, and also includes a footrest step for a passenger on the outside of the engine. In a transmission switching device in which a transmission is provided in a crankcase of an engine, and an operating lever of the transmission is provided so as to protrude upward from a side of the case, the operating lever having an operating knob at an upper end resists a spring. A guide member is provided on the case side so as to be slidable upwardly, and has recesses of different depths that cooperate with the protrusion at the lower end of the guide member.

(Example) An example of implementing the present invention will be explained with reference to attached drawings. The drawing is a bar handle type automatic 3 for rough terrain driving.
This shows the case of a wheeled vehicle, where 1 indicates a vehicle body, and the vehicle body 1 is equipped with one front wheel 2, two rear wheels 3, 3, and an engine 4 located in the middle thereof.
It has a fuel tank 5 on the upper side and a seat 6 for the passenger behind it, and furthermore, a footrest step 7 for the passenger below the seat 6 on the outside of the engine 4, and a footrest 7 in the crankcase 8 of the engine 4. A transmission 9 is provided, and an operating lever 10 of the transmission 9 is provided to protrude upward from a side of the case 8.

In the illustrated example, the transmission 9 includes a main transmission 11 connected to the output side of the engine 4, and a sub-transmission 12 connected to the output side of the main transmission 11, as clearly shown in FIG. 2, for example. The sub-transmission 12 is connected to the aforementioned rear wheels 3, 3 via a bevel gear 13 and a propeller shaft 14 on its output side, and the operating lever 10 is used to switch the sub-transmission 9. It was designed to be installed on the side. To explain further, the main transmission 11 has a front input shaft 1.
1a and a rear output shaft 11b, which can be freely switched to five forward speeds using a shift pedal (not shown).
Further, the sub-transmission 12 is composed of a front input shaft 12a connected to the output shaft 11b and an output shaft 12b behind it, and can be freely switched between two forward speeds and one reverse speed by operating the operation lever 10 described above. shall be. In this case, as clearly shown in FIGS. 3 and 4, for example, the operating lever 10 is fixed to the end of the shift drum 12c located above the middle of the shafts 12a and 12b, extends upward, and is freely tiltable back and forth. shall be.

The above arrangement is not particularly different from the one proposed earlier, and a detailed explanation will be omitted.
According to the present invention, in such a device, the lever 1
A knob 15 is fixed to the upper end, and a guide member 17 that cooperates with the protrusion 15a at the lower end of the lever 10 is provided on the case 8 side. It was supposed to be fixed.

To explain further, in the illustrated embodiment, the lever 10 has a cylindrical root portion as shown in FIGS.
The guide member 17 is fitted onto a shaft extending outward from the end of the cylindrical part 2c and engaged with it by a key 12d, and the guide member 17 extends into the cylindrical part and is fixed to the case 8 side with a screw or the like. 3, and the guide member 17 is, for example, clearly shown in FIG.
a recess 10a that engages with the protrusion 15a at the lower end of the lever 10 in its neutral position, and a relatively shallow second recess 10 that engages with it in the forward and backward tilted positions of the lever 10;
b.

To explain its operation, the lever 10 is in the neutral position shown by the solid line in FIG. Considering the case where the lever 10 is in the neutral position, the lever 10 is located at the concave portion 1 of the guide member 17 at the protruding portion 15a at its lower end, as shown in the figure.
0a and to switch it, press the knob 15.
is moved upwardly against the spring 16 to remove the protrusion 15.
a to escape from the recess 10a to the second recess 10.
All you have to do is move on b to the end. Further, in order to return to the neutral position, it is sufficient to slide the protrusion 15a on the second recess until it falls into the recess 10a, and at this time, it is sufficient to apply only a force in the swinging direction to the knob 15.

(Effect of the invention) According to the invention, in order to switch the operating lever of the transmission, the operating knob provided on the lever is moved upward against the spring to release the engagement with the guide member. In short, since the lever is disposed below the passenger seat, it is easy to pull up the knob by hand and move the protrusion to the end of the second recess. The speed can be changed by the knob, and the knob can be returned to its original position by simply sliding the protrusion over the second recess without pulling up the knob. Moreover, since the guide member is provided on the shaft center side to cooperate with the protrusion at the lower end of the knob, the addition of the guide member also allows the entire transmission including the operating lever to be moved laterally and upwardly. The overhang width can be kept small, and the operation knob can be moved upward against a spring as a guide mechanism, and it is sufficient to add a cam member that cooperates with this, so the structure is simple and inexpensive. Moreover, since it can be constructed compactly, it has the advantage of being easy to arrange so as not to interfere with other pedals.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an example of a vehicle equipped with the device of the present invention, Fig. 2 is a cutaway plan view of the transmission portion thereof, and Fig. 3
The figure is a perspective view of the main part, and FIG. 4 is a cross-sectional view taken along the line -2. 1...Vehicle body, 2...Front plate, 3...Rear wheel, 4...
Engine, 7...Step, 8...Crankcase, 9...Transmission, 10...Operation lever, 15...
Operation knob, 16... Spring, 15a... Projection, 1
7...Guide member.

Claims (1)

[Scope of utility model registration request] An engine is provided in the middle of a vehicle body having front and rear wheels, and a footrest step for a passenger is provided outside the engine, and a transmission is provided in the crankcase of the engine, and an operating lever for the transmission is provided. In the transmission switching device provided to protrude upward from the side of the case, an operating lever having an operating knob at the upper end is provided to be slidable upward against a spring, and cooperates with a protrusion at the lower end of the operating lever. A transmission switching device for a vehicle, comprising a guide member having recesses of different depths fixed to the case side.