JPH10150832A - Working vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a working vehicle effective for combine, etc., by which a manual direction switch can be operated while placing a hand on an easily stable corner part and maintainability and attachment workability can be improved by attaching the manual direction switch on the fore side of corner part. SOLUTION: In front of a driver's seat 8, an arm rest 16 for an operator to place his hand is erected and at the arm rest 16, a manual direction switch 17 is attached for correcting the traveling direction of machine body. Then, this arm rest 16 is formed while having a corner part 16a at the upper end part on the right side, and the manual direction switch 17 is attached on the fore side of corner part 16a. In this case, it is preferable that a switch case 25 for integrating this manual direction switch 17 is divided back and forth, the manual direction switch 17 is integrated into the fore side switch case and further, the fore side and rear side switch cases are attached to the arm rest 16 so as to sandwich the corner part 16a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a working vehicle such as a combine.

[0002]

2. Description of the Related Art Generally, an armrest for an operator to place (or hold) his / her hand is erected in front of a driver's seat in a working vehicle such as a combine or the like. Some models have a direction manual switch for correcting the direction.

[0003]

However, in the prior art, since the directional manual switch is attached to the end or the straight portion of the armrest, the hand becomes unstable when operating the directional manual switch while placing the hand on the armrest. The operation of the direction manual switch is relatively close to the armrest.
If you try to operate the direction manual switch while placing your hand on the armrest, you may be forced to take an unreasonable posture.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has been made with the object of providing a working vehicle capable of solving these problems. An armrest for an operator to put his / her hand forward, and a direction manual switch for correcting the traveling direction of the aircraft is attached to the armrest.
It has a shape having a corner at the upper right end, and a direction manual switch is attached to the front of the corner. In other words, in addition to being able to operate the direction manual switch while placing the hand on the corner where it is easy to stabilize, the operation part of the direction manual switch should be arranged at a position where it can be operated naturally with fingers while holding the hand on the corner In addition, the direction manual switch can be protected by using the corner portion of the armrest.

[0005] In the above device, a switch case for incorporating a manual directional switch is divided into front and rear parts, a manual directional switch is incorporated in a front case, and a front case and a rear case are sandwiched between corners. Is attached to the armrest. That is, it is not necessary to perform complicated processing on the armrest, or the necessary mounting strength can be easily secured, and the positioning work at the time of mounting can be simplified.

[0006]

Next, one embodiment of the present invention will be described with reference to the drawings. In the drawings, 1 is a combine, and the combine 1 is a pre-processing unit 2 for cutting stem culm, a threshing unit 3 for threshing grain from the cut stem and culling, and selecting a grain, and a sorted grain. It comprises a grain tank 4 for storing grains, a post-processing unit 5 for discharging threshed culms, a crawler-type running unit 6, an operation unit 7 provided with various operation tools, and the like. All configurations are the same as before.

A driver's seat 8 is provided on the operation unit 7, and a left side of the driver's seat 8 is provided with a traveling shift lever 9 capable of stepless forward / reverse shifting and a monitor panel provided with a monitor lamp. On the front side of the driver's seat 8, a multi-lever 12 capable of performing a pre-processing elevating operation and a side clutch (side brake) operation, and a key switch 13 as a main switch are provided.
A front operation panel 14 including
Further, a traveling clutch pedal 15 and the like are provided in the foot space.

Reference numeral 16 denotes an armrest which stands on the front operation panel 14 so as to be inclined rearward, and the armrest 16 is formed by bending a pipe material into a substantially zigzag shape in a front view. , At least in the upper right corner,
It has a corner 16a in the shape of a circle.

Reference numeral 17 denotes a direction manual switch provided on the armrest 16;
Are a switch lever 17a for automatically returning to neutral, a left contact 17b for detecting a leftward tilt operation of the switch lever 17a, and a right contact 17 for detecting a rightward tilt operation.
c, etc., but each of the contacts 17b, 17c is connected to a direction control circuit 19 for controlling the operation of the left and right side clutch cylinders 18L, 18R (hydraulic cylinders for forcibly operating the left and right side clutch mechanisms). Have been.

On the input side of the direction control circuit 19, left and right contacts 17b, 17c of the aforementioned direction manual switch 17 are provided.
A pair of left and right direction sensors 20L provided in the preprocessing unit 2,
20R, a direction automatic switch 21 provided on the operation unit 7,
A rotary switch 22 for detecting a side clutch operation of the multi-lever 12 and the like are connected. On the output side, a one-spool three-position electromagnetic switching valve 23 for selectively operating the left and right side clutch cylinders 18L and 18R is provided. The left solenoid 23a and the right solenoid 23b, the direction automatic lamp 24 provided on the monitor panel 10, and the like are connected. Then, when the direction automatic switch 21 is ON, the direction control circuit 19
Solenoid 2 corresponding to the detection signal of L, 20R
3a and 23b are driven while the direction manual switch 17 is
Is operated, the direction automatic switch 21 is turned ON-
Regardless of the OFF state, the solenoids 23a and 23b corresponding to the switch operation direction are preferentially driven, but when the rotary switch 22 detects the side clutch operation of the multi-lever 12, the side clutch operation by the direction control circuit 19 is stopped. It is regulated and the side clutch operation is performed by another system.

Reference numeral 25 denotes a switch case in which the direction manual switch 17 is incorporated.
Are divided into a front case 26 and a rear case 27 each having arcuate fitting portions 26a and 27a capable of fitting to the right corner 16a of the armrest 16,
Further, the front case 26 has a bulging portion 26b for incorporating the manual direction switch 17 bulging forward. The front case 26 and the rear case 27
The arc-shaped fitting portions 26a and 27a are
a from the front and rear, and is screwed into the projection 26c of the front case 26 which is inserted into the mounting hole 16b of the armrest 16 by inserting the screw 28 inserted through the arc-shaped fitting portion 27a of the rear case 27. The switch case 25 is integrally attached to the armrest 16 by being inserted. That is, the armrest 16
Direction manual switch 17 on the front side of the right corner 16a
Is attached, so that the direction manual switch 17 can be operated while placing a hand on the corner portion 16a, which is easy to stabilize, and a position where the finger can naturally touch with the hand placed on the corner portion 16a Switch lever 1
7a can be arranged, and since the direction manual switch 17 is located in front of and inside the corner 16a, contact with an obstacle can be prevented as much as possible. ing. Reference numeral 29 denotes a lead wire of the direction manual switch 17. The lead wire 29 is inserted into the arm rest 16 through a wiring hole 16c formed in the right corner 16a of the arm rest 16, and then is connected to one end of the arm rest 16. And is connected to the direction control circuit 19.

Incidentally, the operation direction of the direction manual switch 17 is set so as not to be horizontal or vertical, but to follow the tangential direction (downward inclined direction) of the right corner 16a. In other words, the direction is such that the finger can be operated naturally with the hand placed on the right corner 16a, so that the operability of the direction manual switch 17 can be further improved.

On the other hand, 30 is the front operation panel 14
And a second lever boss 33 extending in the front-rear direction is integrally formed with a first lever support shaft 31 integrally provided between the left and right panel frames 30. A side clutch operating plate 35 and a lever plate 36 are integrally formed on a second lever support shaft 34 rotatably supported by the second lever boss 33. Is welded to. That is, the multi-lever 12 integrally attached to the lever plate 36 is operated in the front-rear direction about the first lever support shaft 31 and the second lever support shaft 3
4 is permitted, but when the multi-lever 12 is operated back and forth, the arm 33a provided on the first lever boss 33 is connected to the pre-processing elevating mechanism (not shown) via the wire 37. When the multi-lever 12 is operated to the left and right while the multi-lever 12 is operated, the side clutch operation plate 35 operates the left and right side clutch mechanisms (not shown) via a pair of left and right wires 38. When the right and left inclination angle of the wheel 12 exceeds a predetermined angle, the left and right side brake mechanisms (not shown) are simultaneously operated.

Reference numeral 39 denotes a switch bracket on which the rotary switch 22 is mounted. Since the switch bracket 39 is mounted on the plate 40 fixed to the first lever boss 32, the multi-lever 12
Is rotated integrally with the lever plate 36 during the forward and backward operations. A detection arm 22a is integrally attached to a rotary shaft of the rotary switch 22, and a pin 41 protruding from the lever plate 36 is fitted into a long hole of the detection arm 22a. That is, since the rotary switch 22 is rotated back and forth integrally with the lever plate 36 and the left and right rotation of the lever plate 36 is detected via the detection arm 22a, the rotary switch 22 is attached to the body side fixing member. It is not necessary to provide an accommodation mechanism for allowing the back and forth operation of the multi-lever 12 as in the related art, and it is possible to eliminate a disadvantage that a detection error occurs due to backlash of the accommodation mechanism. Since the mounting position of the rotary switch 22 can be adjusted based only on the left and right rotation of the lever plate 36, the maintainability can be improved.

In the vehicle constructed as described above, an armrest 16 provided in front of the driver's seat 8 is provided with a manual direction switch 17 for correcting the running direction of the aircraft. 17 was attached to the front side of the right corner 16a of the armrest 16, so that it was not possible to operate the direction manual switch 17 while placing the hand on the corner 16a, which was easy to stabilize, and the hand was placed on the corner 16a. The operability can be improved by disposing the switch lever 17a at a position where the finger can naturally touch in this state.

Moreover, since the directional manual switch 17 is located in front of and inside the corner 16a, the directional manual switch 17 can be protected by using the armrest 16, and as a result, obstacles and obstacles can be prevented. Damage of the directional manual switch 17 due to the contact of the user can be prevented as much as possible.

A switch case 25 for incorporating the manual directional switch 17 is divided into a front case 26 and a rear case 27, and the manual directional switch 17 is mounted on a bulging portion 26a formed in the front case 26. In addition, the front case 26 and the rear case 27 are further attached to the armrest 16 so as to sandwich the right corner 16a from front and rear.
Since the switch case 25 can be assembled without performing complicated processing on the armrest 16, the mounting strength and the mounting workability can be improved.

Further, since the operation direction of the direction manual switch 17 is aligned with the tangential direction of the right corner 16a,
The finger can be operated naturally with the hand placed on the right corner 16a, and as a result, the operability of the direction manual switch 17 can be further improved.

Since the switch case 25 is formed along the right corner 16a, there is no inconvenience that lowers the function of the armrest 16, or the design can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a combine.

FIG. 2 is a front view of an operation unit.

FIG. 3 is a side view of the same.

FIG. 4 is a plan view of the same.

FIG. 5 is a front view of the armrest alone.

FIG. 6 is a side view of the directional manual switch attached to the armrest.

FIG. 7 is a front view of the same.

8A is a sectional view taken along line AA of FIG. 7, and FIG.
It is sectional drawing.

FIG. 9 is a circuit diagram showing a direction control circuit.

FIG. 10 is a hydraulic circuit diagram showing a side clutch operating mechanism.

FIG. 11 is a perspective view of a main part of the multi-lever.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Combine 7 Operation part 16 Armrest 16a Corner 17 Direction manual switch 25 Switch case 26 Front case 27 Rear case

Claims (2)

[Claims] 1. A work vehicle having an armrest standing in front of a driver's seat on which an operator places his / her hand, and a direction manual switch for correcting a traveling direction of the machine body attached to the armrest. In the above, the armrest, a shape having a corner at the upper right end,
A work vehicle having a manual direction switch attached to the front of the corner. 2. A switch case according to claim 1, wherein a switch case for incorporating a manual direction switch is divided into front and rear parts.
A work vehicle with a manual direction switch built into the front case and the front case and rear case attached to the armrest so as to sandwich the corner.