JPH0435217Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a guide structure for a gear shift lever in a tractor.

(b) Prior art Conventionally, the gear shift lever of a tractor was installed upright from a transmission case placed below the seat in the driver's seat, and was inserted through a guide groove provided in the rear wheel fender on the side of the seat. At the very least, it was constructed so that the gear shift operation of the same lever was performed in accordance with the same guide groove.

In other words, this is the tractor disclosed in Publication of Utility Model Publication No. 19934, etc., in which the midway part of the gear shift operation lever is moved outward from the insertion hole provided in the upper part of the vertical wall of the left rear wheel fender. The fender is bent and protrudes upward from the guide groove provided on the horizontal upper surface of the fender, and an inclined surface is formed between the vertical wall and the horizontal upper surface. The surface portion forms a shift slope portion, and the slope portion protects the midway portion of the shift lever from mud splashes from the rear wheels.

(c) Problems to be solved by the invention Therefore, although the above-mentioned gear lever guide structure has improved operability etc. compared to the previous gear shift lever guide structure, there is no insertion hole or guide in the rear wheel fender. The formation of grooves, sloped surface portions, etc. causes defects in the strength of the fender, and there is also a problem in that manufacturing, processing, etc. require time and effort due to structural complexity.

(d) Means for solving the problem Therefore, in the present invention, the rear wheel fender arranged on the lateral side of the seat is connected to a vertical wall surface section positioned inward of the rear wheel and a rear wheel fender disposed on the side of the seat. A projecting surface section is formed by overhanging the upper edge of the standing wall surface section upwardly from the front of the upper part of the rear wheel fender. A notch hole is formed in the notch hole, and the bottom surface of a rectangular box-shaped guide box is placed on the top surface of the notch in the vertical wall section, and a locking hole is placed in the notch hole, and the bottom surface of the rectangular box-shaped guide box is placed on the notch top surface of the vertical wall surface. The stop flange is locked onto the notch circumferential surface of the overhanging surface part and installed in a fitted state, an insertion hole is bored on the inner surface of the guide box, and a speed change guide groove is bored on the upper surface. , the intermediate part of the gear shift lever, the base end of which is interlockingly connected to the transmission case below the seat, is inserted into the guide box through the insertion hole, and the grip part of the gear lever is made to protrude from the gear shift guide groove. It is an object of the present invention to provide a gear shift lever guide structure.

(E) Effect When changing gears while the machine is running, all you have to do is slide the gear lever that protrudes from the inside of the rear wheel fender located next to the seat. A cutout hole is provided in the fender on the inner side and the upper side, and a guide box is fitted into the notch hole, and the middle part of the lever is inserted into the box through the insertion hole provided on the inner side of the box. In addition to inserting the shift lever into the box, the shift lever grip protrudes from the shift guide groove provided on the upper side of the box, which improves operability.Moreover, the guide box is a box with a sealed bottom. This ensures that the gear lever is protected from mud splashes from the rear wheels.

In addition, the guide box is installed by placing the bottom surface of the guide box on the upper end surface of the notch in the vertical wall surface, and at the same time, by placing the bottom surface of the guide box on the upper end surface of the notch in the vertical wall surface, and by attaching a lock that protrudes outward from the outer surface of the guide box on the circumferential surface of the notch in the projecting surface. This can be done easily and reliably by locking the flange.

Furthermore, since the guide box itself can be integrally molded into a rectangular box shape to ensure strength, the strength of the rear wheel fender can be increased.

(f) Effects According to the present invention, since the structure is simplified and the guide box is fitted, which can increase the strength of the fender, the box can be easily installed, and furthermore, the box can be easily installed. It is possible to smoothly guide the gear shift lever through the gear lever, which improves the appearance, improves operability, and improves work efficiency.

(G) Example The example of the present invention will be explained in detail based on the drawings.
A indicates a tractor, and the tractor A has a prime mover section 2 at the front of the fuselage frame 1, a transmission case 3 at the rear, and a rear differential case 4 at the adjacent rear.
A front wheel 5 is disposed below the front of the frame 1, and a rear wheel 6 is connected to the rear differential case 4 so that the vehicle can run.

Further, 7 is a driving section, and the driving section 7 is provided with a handle 9 via a dash board 8 at the front.
Behind that, seats 10 are above the transmission case 3.
Left and right step portions 11, 11 are provided on the left and right sides of the lower part of the driving portion 7 to project horizontally outward.

Further, left and right fenders 1 are provided on the left and right sides of the seat 10 to cover approximately the upper halves of the left and right rear wheels 6, 6.
2, 12 are installed, and the same fender 12, 1
2 is a standing wall surface portion 13, 13 and an overhanging surface portion 14, 14.
As a result, the cross section is formed into a substantially inverted L-shape, and the front half of the projecting surface portions 14, 14 is formed into a substantially dogleg-shaped inclined rising surface 14-1, 1, and the rear half is formed into a horizontal surface 14-2, 2. The lower ends of the inclined rising surfaces 14-1 and 1 are connected to the left and right step portions 1.
1, 11 are connected to the rear end, and the vertical wall surface portions 13, 1
3 are fixed to the left and right side walls of the mission case 3 via support stays 15, 15.

Moreover, the vertical wall surface parts 13, 13 and the inclined upward surface 14
-1,1 upper end part and the horizontal surface 14-2,2 front end part
A guide box 17 is inserted through the left corner 16 of the box 1.
A group of various operating levers 18 whose base ends are interlockingly connected to the mission case 3 are inserted and protruded through the levers 7,
The lever group 18 is guided to switch via the box 17.

That is, the guide box 17 is formed into a rectangular box shape with a square cross section, and the front half of the upper side surface is formed with a forward downward slope to provide an upper inclined surface part 17-1, and the inclined surface part 17-1 is formed in an H shape. A main gear shift guide groove 19 is bored, and the rear half of the upper surface is formed into a horizontal plane to provide an upper horizontal plane part 17-2, and a longitudinal longitudinal sub-shift guide groove 20 is formed in the horizontal plane part 17-2. Furthermore, a longitudinally longitudinal and upwardly curved insertion hole 27 is bored on the inner surface, and the lower surface is formed into an upwardly curved surface 17-3 to accommodate the rear wheel when the fender is attached. The guide box 17 is configured to prevent interference with the left fender 12, as well as mud clogging. , and is fitted so that only the inner part is exposed. Moreover, the notch hole 21 is formed by cutting out the vertical wall surface part 13 and the overhanging surface part 14 inwardly and upwardly, and the box 17 is formed at the peripheral edge of the notch hole 21 formed by the vertical wall surface part 13. A notch hole 2 on which the bottom surface is placed and formed by the overhanging surface portion 14
A side surface of the box 17 on the first peripheral edge side is locked to the same peripheral edge by a locking flange 22 protruding from the same side, and the same peripheral edge is folded inward at a right angle to provide a folded part 14-3. , the side surface of the box 17 is fixed to the folded portion 14-3 with bolts 23.

The operation lever group 18 includes the main shift lever 2
4, and a sub-shift lever 25 to a PTO switching lever, and the main shift lever 24 has a base end 24-
2 is swingably connected to the main gear shift operation shaft 26 protruding from the left side wall of the transmission case 3, and is also erected upward, and its midway portion located on the side of the guide box 17 is inserted into the same box 17. At the same time, by further bending it forward and upward, it is made to protrude from the main gear shift guide groove 19, and the grip part 24-1 at the upper end of the lever 24 is positioned at a height that makes it easy to operate in the vertical and horizontal directions. Further, the sub-shift lever 25 has a base end 25-2 protruding from the left side wall of the transmission case 3 and is interlocked and connected to the sub-shift operating shaft 28, and is erected upward, with a base end 25-2 protruding from the left side wall of the transmission case 3. The lever 2 is bent in the direction of the guide box 17 and inserted into the guide box 17 through the insertion hole 27, and further bent vertically upward to protrude from the sub-shift guide groove 20.
The grip portion 25-1 at the upper end of the grip 25-1 is positioned at a height that makes it easy to operate in the front-back direction.

29 is a telescopic adjustment tool for adjusting the position of the main shift lever 24.

Therefore, the shift operation of the main and auxiliary shift levers 24 and 25 is performed by placing both levers 24 and 25 in a guide box 17 inserted into a corner 16 of the left fender 12 located on the left side of the seat 10. By doing so, the main and sub-shift levers 24 and 25 can be operated in the most comfortable position for the seated operator.Moreover, the main shift lever 24 is
By inserting and protruding into the main shift guide groove 19 provided on the upper inclined surface portion 17-1 of the box 17, switching operations in the vertical and horizontal directions can be performed smoothly and reliably via the guide groove 19. Further, the sub-shift lever 25 is connected to the upper flat portion 1 of the box 17.
Through the auxiliary shift guide groove 20 provided in the gear shift guide groove 7-2, switching operation in the front and rear direction can be performed smoothly. By locating it in the best possible position, operability and work efficiency are synergistically improved.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing the gear shift lever guide structure according to the present invention, Fig. 2 is a partially cutaway side view of the main part, Fig. 3 is a front sectional view of the main part, and Fig. 4 is: FIG. 2 is a side view of a tractor having the same main parts. A...Tractor, 17...Guide box, 2
4...Main gear shift lever, 25...Sub gear shift lever.

Claims (1)

[Scope of Claim for Utility Model Registration] The rear wheel fender 12 disposed on the lateral side of the seat 10 is connected to the vertical wall surface section 13 which is positioned inward of the rear wheel 6 and from the upper front side of the rear wheel 6. An overhanging surface section 14 is formed by overhanging the upper end edge of the standing wall surface section 13 in a cover-like manner over the top, and a portion of the upstanding wall surface section 13 and the overhanging surface section 14 are each formed on the inner side of the rear wheel fender 12. A notch hole 21 is formed by cutting out the hole 21, and a rectangular box-shaped guide box 1 is inserted into the notch hole 21.
The bottom surface of the guide box 7 is placed on the notch upper end surface of the vertical wall surface section 13, and the locking flange 22 protruding outward from the outer surface of the guide box 17 is placed on the overhanging surface section 1.
The guide box 17 has an insertion hole 27 in the inner surface thereof, a gear shift guide groove in the upper surface thereof, and the guide box 17 is fitted in a fitted state. The end of the transmission case 3 below the seat 10
A gear shift lever guide structure for a tractor, in which a midway part of the gear shift lever interlocked with the gear shift lever is inserted into the guide box 17 through the insertion hole 27, and a gripping part of the gear shift lever is made to protrude from the gear shift guide groove.