JP2012213343A - Operating device of combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure the good distinguishability of operating switches provided at a grip part of an operating lever for adjusting threshing depth, thereby facilitating operations with the thumb of a hand holding the operating lever, in a state where operating errors are unlikely.SOLUTION: At the grip part 40 of the operating lever that can be operated to move longitudinally, operating switches 42 for adjusting threshing depth are arranged separately in upper and lower positions on a horizontal side face 44A located on the driver's seat side in the horizontal direction. The operating switches 42 for adjusting threshing depth are so formed that the direction a of the operation of pushing one operating switch 42 is vertically away from the direction b of the operation of pushing the other operating switch 42, and that the direction b of the operation of pushing the other operating switch 42 is vertically away from the horizontal direction or the direction a of the operation of pushing the one operating switch 42.

Description

  The present invention is a grip portion of an operation lever that can be moved in the front-rear direction, and an operation switch for adjusting the handle depth is arranged on the side surface located on the side of the control seat in the left-right direction. The present invention relates to a combine operating device.

  This type of combine operating device has a structure in which a shallow handle switch and a deep handle switch, which can be pushed and operated with a finger gripping the grip portion, are arranged in the vertical direction on the grip portion of the manual transmission operation lever. There is. In this structure, the side of the grip part of the manual shift operation lever is provided with a mountain-shaped protrusion that protrudes in a lateral shape, and a shallow handle switch is provided on the upper slope of the laterally-shaped protrusion. A deep handle switch is provided on the lower slope of each of the switches, and each switch can be operated with the thumb of the hand holding the manual shift operation lever (see, for example, Patent Document 1).

Japanese Patent No. 3897800 (paragraph [0027], FIGS. 3 and 5)

As described above, in the structure in which the shallow handle switch and the deep handle switch that can be pushed and operated by the finger that grips the grip portion are arranged in the vertical direction on the grip portion of the manual shift operation lever, the manual shift operation lever Since the shallow handle switch and deep handle switch can be operated while holding the grip, after removing the manual shift operation lever and operating the shallow handle switch and deep handle switch, re-hold the manual operation lever. This can be used conveniently.
In addition, a lateral chevron projection is formed on the lateral side of the grip portion of the manual transmission operation lever, and the shallow handle switch provided on the upper slope of the chevron projection is operated obliquely downward, and the chevron projection The deep handle switch provided on the lower slope of the is configured to be operated obliquely upward. As described above, the switches are arranged in the vertical direction and the operation directions of the switches are different, so that the individual switches can be identified more easily and erroneous operations are easily reduced.

However, the conventional structure has the following problems when the switches provided on the slopes on both the upper and lower sides of the mountain-shaped protrusion are operated with the thumb of the hand holding the manual transmission operation lever.
That is, the thumb position of the hand holding the manual speed change lever is usually in the middle of the upper and lower switches so that it is convenient to operate either switch when the upper and lower switches are not operated. It is positioned so as to grip the part.
This position is not the slope on both sides of the top and bottom formed in the mountain-shaped protrusion, but the top part located in the middle, so when trying to grasp sensibly without gazing at the manual shift operation lever, For example, when the manual shift control lever is swung back and forth, if the thumb is slightly disengaged from the top, it may slide up or down on the slope, and the operation switch on that slope may be operated incorrectly. There was room for improvement in this regard.

  The object of the present invention is to provide an operation switch for adjusting the handling depth in the grip portion of the operation lever, while ensuring good identification of each operation switch, and for the operation with the thumb of the hand holding the operation lever, An object of the present invention is to provide a combine operating device that is easy to perform in a state where there is little risk of erroneous operation.

The technical means of the operation device for a combine according to the present invention, which has been taken to achieve the above object, has structural features and operational effects in the following points.
[Solution 1]
An operating device for a combine that has a handle of the operating lever that can be moved in the front-rear direction, with operating switches for adjusting the handle depth distributed on the side surface located on the side of the control seat in the left-right direction. The operation switch for adjusting the handling depth is such that the push operation direction of one operation switch is a direction away from the push operation direction of the other operation switch, and the push operation of the other operation switch. The direction is configured to be a horizontal direction or a direction away from the up / down direction with respect to the pressing operation direction of the one operation switch.

[Operation and effect of invention according to Solution 1]
In order to improve the distinguishability of the switch to be operated by changing the vertical position and operation direction of the operation switch for adjusting the handle depth arranged on the side surface of the grip part of the operation lever, for example, When projecting protrusions on the side surface and providing each operating switch for adjusting the handle depth on the slope, the side surface of the grip is difficult to form a large protrusion. The slopes of the shape protrusions are also relatively close to each other in the vertical direction, and it is difficult to set a wide vertical distance between the operation switches for adjusting the handling depth.
According to the characteristic configuration shown in the solving means 1, regardless of the shape of the lateral surface of the grip portion, the pressing operation direction of one operation switch is a direction away from the vertical operation direction with respect to the pressing operation direction of the other operation switch. In addition, the push operation direction of the other operation switch is set to be a horizontal direction or a direction away from the push operation direction of the one operation switch in the vertical direction. It is easy to arbitrarily set the vertical interval of each operation switch without being limited to the above-described formation portion of the mountain-shaped protrusion.

  When the upper and lower operation switches are not being operated, the thumb of the hand gripping the grip is positioned at an intermediate position between the upper and lower operation switches so that it is convenient to operate either the upper or lower operation switches. Is located. To adjust the depth of handling from this state, in order to operate the operation switch with the thumb, consciously move the thumb from the intermediate position to the position where the target operation switch exists, and The handling depth is adjusted by performing a pushing operation with the thumb in a predetermined pushing operation direction set in the operation switch.

  In this way, when performing the handling depth adjustment operation, the thumb that has been positioned in the middle of each operation switch is consciously moved up and down to the position where the target operation switch exists, and the other operation switch It is necessary to be aware of the operation in the direction away from the camera, reducing the possibility of problems such as adjusting the handle depth to the extent that the thumb located at the intermediate position moves slightly. Therefore, an accurate operation can be performed by an intentional operation with the thumb conscious of the operation position and the operation direction.

[Solution 2]
Another technical means of the present invention taken to solve the above problem is that a lateral side surface of the grip portion provided with the operation switch is formed in a curved surface that is recessed toward the opposite side of the control seat in the left-right direction. The operation switch that can be pushed obliquely upward is provided in a curved portion on the upper side of the curved surface, and the operation that can be pushed obliquely downward on the curved portion on the lower side of the curved surface. A switch is provided.

[Operation and effect of invention according to Solution 2]
According to the invention relating to the above solution 2, the lateral side surface of the grip portion is formed into a curved surface that is recessed toward the opposite side of the control seat in the left-right direction, and each operation for adjusting the handle depth on the curved surface is performed. Providing the switch is advantageous in that each operation switch is provided in a state where it enters the curved portion, and it is easy to avoid contact with the operator and other objects.
An operation switch that can be pushed and operated obliquely upward is provided on the curved portion on the upper side of the curved surface constituting the lateral surface of the grip portion, and the curved portion on the lower side of the curved surface is directed obliquely downward. Because there are operation switches that can be pushed, it is easy to make the push operation direction of each operation switch perpendicular to the curved surface. There is an advantage that it is easy to operate.

[Solution 3]
The other technical means of the present invention taken in order to solve the above problem is that the operation direction of the operation switch disposed on the lateral side surface is inclined with respect to the horizontal plane. It is characterized in that the push operation direction of the upper operation switch is inclined with respect to the horizontal plane to be larger than the angle.

[Operation and effect of invention according to Solution 3]
According to the invention relating to the above solution 3, the operation switches can be easily operated by the thumb of the hand holding the grip portion of the operation lever.
In other words, the thumb in a posture of gripping the grip part is easy to move in the direction close to the other four fingers gripping the grip part, but opens the thumb larger in the direction away from the four fingers. It tends to be difficult to move because it moves in the direction. Therefore, if the vertical distance between the operation switches arranged on the side surface of the grip portion is set wide, the operation with the thumb positioned at the vertical distance when each operation switch is not operated is There is a tendency that the operation switch on the lower side is harder to operate than when the operation switch is operated.

In the invention according to the solution 3, the operation of the upper operation switch and the lower operation switch is performed from the state where the thumb in the state of gripping the grip portion is positioned at the vertical spacing position along the horizontal direction. In performing the above, the angle at which the push operation direction of the upper operation switch is inclined with respect to the horizontal plane is increased, and the angle at which the push operation direction of the lower operation switch is inclined with respect to the horizontal plane is decreased.
Therefore, with the vertical spacing position as a reference, the position of the upper operation switch is in the direction in which the thumb approaches the other four fingers, and the pushing operation direction is also the movement in the direction in which the other four fingers are approached. Even if the direction in which the operation switch of the upper operation switch is inclined with respect to the horizontal plane is large, it can be operated with easy movement of the thumb.
The position of the operation switch on the lower side is a direction in which the direction of the push operation with the thumb is away from the other four fingers, and the direction of the push operation is away from the other four fingers, based on the vertical spacing position. Therefore, the operation is performed in a direction in which the thumb is difficult to move, but the thumb is moved to the other four fingers by reducing the angle of inclination with respect to the horizontal plane. The movement away from the camera is reduced, and the operation difficulty in the direction in which the thumb is difficult to move is reduced.

[Solution 4]
Another technical means of the present invention taken to solve the above problem is that four fingers other than the thumb can be put on top of the grip portion of the operation lever, and an intermediate portion in the left-right direction is upward. The top curved surface which curves is formed, It is characterized by the above-mentioned.

[Operations and effects of invention according to Solution 4]
According to the invention relating to the above solution 4, it is possible to operate the operation switch with the thumb while the top curved surface formed at the top of the grip portion of the operation lever is gripped by four fingers other than the thumb. .
In this state, the thumb that grabs the top curved surface where the middle part is bent upward, and the reaction force received by the thumb when the operation switch provided on the side part of the grip part of the operation lever is pushed with the thumb. Since the other four fingers are received at a position facing the thumb and the operation switch can be operated in this state, there is an advantage that the operation switch can be stably operated with the thumb.

[Solution 5]
Another technical means of the present invention devised to solve the above-described problem is that the protrusions are arranged between the operation switches arranged in the vertical direction on the side surface of the grip where the operation switches are arranged. It is characterized by having a lateral contact sensing part consisting of a groove or a groove.

[Operation and effect of invention according to Solution 5]
According to the invention relating to the above solution 5, the center position of the vertical distance between the operation switches can be accurately detected by confirming the position of the lateral contact detection unit with the belly of the thumb of the hand holding the grip. This makes it easier to operate each operation switch accurately.

[Solution 6]
Another technical means of the present invention taken to solve the above-mentioned problems is that the lateral contact sensing portion is formed as a ridge, and the projecting height from the lateral side surface of the lateral contact sensing portion to the lateral side is set. The operation switch is formed to be lower than the protruding height of the operation switch from the lateral side surface to the lateral side.

[Operations and Effects of Invention According to Solution 6]
According to the invention relating to the solving means 6 described above, since the lateral contact sensing part is a ridge part, it becomes easy to sense with the belly of the thumb. In addition, since the protruding portion is lower than the protruding height of the operation switch, the vertical movement of the thumb at the position of the lateral contact sensing portion is suppressed by the presence of the upper and lower operation switches, and conscious operation is performed. This is advantageous in that it is less likely to cause a situation where the thumb is displaced at a position where the operation switch exists without being accompanied.

[Solution 7]
The other technical means of the present invention taken to solve the above-mentioned problems are from the rear surface side of the grip portion, from the ridge portion bulging from the rear surface portion to the rear side, or from the groove portion recessed to the front side. The post-contact sensing unit is formed in a vertical position corresponding to the space between the upper and lower operation switches.

[Operation and effect of invention according to Solution 7]
According to the invention relating to the solving means 7, the hand holding the grip portion sensuously senses the position of the rear contact sensing portion, so that the corresponding vertical position between the upper and lower operation switches is sensibly sensed. It becomes easy to grasp.
Therefore, there is an advantage that the position of the upper and lower operation switches can be sensed and the operation switch can be easily operated with the thumb.

[Solution 8]
Another technical means of the present invention taken in order to solve the above problems is that the shaft of an operating lever provided with the grip part has an upper end inserted into the grip part, and the upper end of the shaft is the grip part. It is configured to be positioned above the respective operation switches provided in the section.

[Operation and effect of invention according to Solution 8]
According to the invention relating to the above solution 8, the operation switch for adjusting the handle depth is disposed on the lateral side surface of the grip portion, and the shaft is placed in the grip portion without being restricted by the position of the operation switch. Since it is inserted, it is easy to obtain a combine operating device having a highly durable operating lever by securing a sufficient length of shaft insertion to the grip portion.

Combine front view Combine front plan view Operation lever perspective view Rear view of control lever Right side view of the control lever Top view of the control lever Bottom view of control lever Front view of the control lever IX-IX sectional view in FIG. XX sectional view in FIG. Explanatory drawing in rear view showing the operating state of the control lever Explanatory drawing in right side view showing the operating state of the control lever Rear view of operation lever in another embodiment Rear view of operation lever in another embodiment Rear view of grip Front view of grip Left side view of grip Right side view of the grip Top view of the grip Bottom view of grip Perspective view of grip

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a combine operating device according to the present invention will be described based on the drawings.

[Overall structure of the combine]
FIG. 1 shows a front side surface of the self-removing combine 1, and FIG.
The combine 1 includes a pair of left and right crawler type traveling devices 1L and 1R at the lower part of the body frame 10, and is configured to be able to travel by driving the traveling devices 1L and 1R.
At the front of the machine body frame 10, there is provided a reaping processing device 3 that can be moved up and down and harvests the planted cereals in the field and conveys the harvested cereals rearward. The reaping processing device is provided on the body frame 10. The threshing device 11 that receives the cereals harvested in 3 and threshing and sorting, and the grain tank 12 that stores the grain obtained by threshing and sorting in the threshing device 11 are mounted, The boarding operation unit 2 is formed on the machine body frame 10 at the front portion of the grain tank 12.

The reaping processing device 3 is positioned at the front end of the reaping processing device 3 when the reaping portion frame 30 is swung up and down around the horizontal axis x with respect to the body frame 10 by the lifting and lowering hydraulic cylinder 13. The plurality of weeding tools 31 are configured to be moved up and down into a descending work state in which the weeding tool 31 is lowered to the vicinity of the ground and a non-working state in which the weeding tool 31 is lifted from the ground.
Then, when the traveling machine body is caused to travel with the cutting processing device 3 in the descending work state, the cutting processing device 3 establishes the adjacent rows by the weeding tools 31 corresponding to the plurality of planting cereals to be cut. The cereal is divided into cereals, and the planted cereals from each weeding tool 31 are raised and processed by the corresponding pulling device 32, and are also cut by the clipper-shaped cutting device 33.
The harvested cereals harvested by the reaping device 33 are transferred to the vertical conveying device 34. The vertical conveying device 34 changes the harvested cereal to a sideways posture at the conveying terminal end, and the threshing feed chain 11A of the threshing device 11 is changed. It is comprised so that it may supply.

  The threshing device 11 feeds the tip side to a handling chamber (not shown) while sandwiching the stock side of the harvested cereal by the threshing feed chain 11A and transporting it backwards, and a handling cylinder that rotates the harvested cereal. (Not shown). Further, the threshing grains carried out from the threshing apparatus 11 are collected and stored in the grain tank 12, and the threshing grains stored in the grain tank 12 are discharged to the outside by a screw conveyor type grain discharging device (not shown). Is configured to do. Further, the waste straw after the threshing process is transported to the rear of the machine body and is shredded by the waste wall processing apparatus (not shown) and then discharged from the rear of the machine body.

  In the boarding operation section 2, a control tower 21 provided with a control operating tool 22 and an instrument panel 23 is erected on the front side of the control seat 20, and on the left side of the control seat 20 on the control seat 20. There is provided a control box 24 provided with a main transmission lever 4 (corresponding to an operation lever) and the like that are operated by a driver who is seated with the left hand.

The main speed change lever 4 is provided so as to be swingable in the longitudinal direction of the machine body, and a stepless speed change operation to the forward high speed side is performed by swinging forward with the intermediate neutral position N in between. A crank-like structure provided in the control box 24 is linked to a hydrostatic continuously variable transmission (not shown) so that a stepless shifting operation to the reverse high speed side is performed by a swinging operation to the rear side. Is swung along the operation guide groove 25.
The hydrostatic continuously variable transmission operated by the main transmission lever 4 constitutes a main transmission that shifts the power of the engine 14 mounted on the body frame 10 and transmits it to the traveling apparatuses 1L and 1R. The power shifted by the hydrostatic continuously variable transmission is further transmitted to the travel devices 1L and 1R via a sub-transmission comprising a gear transmission mechanism in a transmission case (not shown). It is.

[Configuration of cutting and conveying device]
As shown in FIGS. 1 and 2, the above-described vertical conveying device 34 is configured to clamp and convey a cereal stock with an endless chain and a clamping rail so that the cereal immediately after cutting is delivered to the feed chain 31. 34 A of conveyance parts and the tip conveyance part 34B which latches and conveys the tip side of a grain candy by many latching claws are provided, and the stock source is threshing feed chain 11A on the conveyance termination side of the stock source conveyance part 34A. 34C (corresponding to a handling depth adjusting device).

The supply conveyance unit 34C is supported so that the rear end side thereof is swingable around the axis P on the front end side, and the threshing feed is fed from the supply conveyance unit 34C by the oscillation of the rear end side around the axis P. It is configured to adjust the depth of handling by changing the position in the slimming direction of the grain culm delivered to the chain 11A.
The swinging operation of the supply conveyance unit 34C around the axis P is performed by forward / reverse operation of a handling depth motor 35 including an electric motor with a gear type reduction mechanism provided at a lower portion on the front end side of the supply conveyance unit 34C. It is configured as follows.

[Configuration of control lever]
Next, the configuration of the main speed change lever 4 that is swung along the crank-shaped operation guide groove 25 provided in the control box 24 will be described.
As shown in FIGS. 3 to 7, the main transmission lever 4 fixes the grip portion 40 to the upper portion of the shaft 41 protruding from the inside of the control box 24 through the guide groove 25 to the upper side of the upper surface of the control box 24. The grip 40 has a pair of upper and lower operation depth adjustment switches 42, 42.

The shaft 41 is made of a round pipe material, and is pivotally supported in the control box 24 so as to be able to swing back and forth around the horizontal axis along the horizontal direction of the airframe, although not shown, and the crank-shaped guide groove 25. In order to be able to swing in the left-right direction along the bent portion, the shaft is supported so as to be swingable even around the longitudinal axis.
When the shaft 41 is positioned at the neutral position N in the standing posture shown in FIG. 3, the hydrostatic continuously variable transmission that transmits the driving force to the traveling devices 1L and 1R is operated to the neutral position to stop driving. The shaft 41 is linked to the hydrostatic continuously variable transmission.
When the swinging operation is performed forward from the neutral position N to the forward position F side, the hydrostatic continuously variable transmission outputs a forward driving force to the traveling devices 1L and 1R. When swinging from the neutral position N to the rear side and operating to the reverse position R side, the shaft 41 so that the hydrostatic continuously variable transmission outputs driving force to the reverse side to the traveling devices 1L and 1R. And a hydrostatic continuously variable transmission.

[Composition of grip part]
The grip portion 40 is formed such that the maximum left-right width W1 in the left-right direction is larger than the maximum front-back width W2 in the front-rear direction, and the front-rear direction is lower than the lower front-rear width W3 in the front-rear direction. The top curved surface is formed to have the maximum front-rear width W2 so as to increase the directional width, and has a lateral width and a front-rear width suitable for operation by placing four fingers other than the thumb on the top of the grip portion 40. 43 is formed.
As shown in FIGS. 4 and 5, the top curved surface 43 is formed by a double curved surface in which an intermediate portion projects upward in both the left-right direction and the front-rear direction. As shown by the phantom line in FIG. 12, the front edge side of the top curved surface 43 is a finger-hanging projection that can be used to put a long finger such as the middle finger or ring finger among the four fingers of the left hand holding the main transmission lever 4. The right side edge 43b of the top curved surface 43 is connected to the upper end of a laterally curved side surface 44A that is concavely curved on the steering seat 20 side (right side in FIG. 4) of the grip 40 described later. Further, the vertical height h of the grip portion 40 is formed larger than the maximum width W1 in the left-right direction.

  The lateral side surface 44A on the control seat 20 side of the grip portion 40 is formed in a curved surface that is recessed toward the opposite side of the control seat 20 in the front-rear direction, and is opposite to the lateral side surface 44A on the control seat 20 side. The lateral side surface 44 </ b> B is formed in a curved surface that curves toward the side opposite to the control seat 20. The width in the left-right direction of the grip portion 40 is substantially the same as a whole, but is formed to be a little wider on the top side. Operation switches 42 and 42 for adjusting the handling depth are provided on the lateral side surface 44A on the side of the control seat 20. The switches 42, 42 provided on the side surface 44A are only the operation switches 42, 42 for adjusting the handling depth, and no other switches are provided.

In the grip portion 40, a lateral contact sensing portion 47b is provided on the concavely curved lateral side surface 44A at a substantially intermediate position of the vertical height h. The lateral contact sensing portion 47b is formed by a protrusion along the front-rear direction between a pair of upper and lower operating depth adjustment operation switches 42, 42 provided on the lateral side surface 44A.
Of the operation switches 42, 42 for adjusting the handling depth, the upper operation switch 42 is located above the lateral contact sensing unit 47b and above and below the lateral contact sensing unit 47b. Within the range of the direction length, it is arranged on the lower half side closer to the lateral contact sensing part 47b than the right lateral edge 43b of the top curved surface 43.
The operation switch 42 on the lower side is located below the lateral contact sensing unit 47b and within the range of the vertical length of the grip 40 on the lower side of the lateral contact sensing unit 47b. It is arranged on the upper half side closer to the lateral contact sensing part 47b than the lower end position of the side surface 44A.
The pair of upper and lower handling depth adjustment operation switches 42 and 42 and the lateral contact sensing unit 47b are provided on the lateral side edge 43b of the top curved surface 43 and the lateral side of the grip 40 on the side of the control seat 20 side. It is arranged so as not to protrude beyond an imaginary line segment c (see FIG. 11) connecting the lower end position of the side surface 44A.

Further, as shown in FIG. 5, the rear surface 45 of the grip portion 40 is formed in a gently curved surface that slightly protrudes rearward in the left-right direction. 6 and 7, it is formed in a curved surface having a larger curvature than the curved surface of the rear surface 45 when viewed in the left-right direction, and the intermediate portion is rearward in both the vertical direction and the left-right direction. It is formed in a curved double curved surface.
The rear surface 45 is a part of the rear surface 45, but as shown in FIGS. 3 to 5, the rear surface 45 is located at an intermediate position in the vertical direction and from a substantially central position in the horizontal direction. A recessed portion 46 that is recessed toward the front side is formed on the side surface 44A side (right side in FIG. 4) where the operation switches 42 and 42 are disposed.

As shown in FIGS. 4, 5, and 10, the recessed portion 46 includes a side edge 46 a located on the side surface 44 </ b> A side where the operation switches 42, 42 are disposed, and the rear surface 45. It is formed in a substantially crescent shape when viewed from the rear, with respect to the central edge 46b existing at a location including a substantially central position in the left-right direction.
The side edge 46a is formed in a curved shape along the curve of the lateral side surface 44A on which the operation switches 42, 42 are disposed in the rear view, and is located at the foremost side of the recessed portion 46. positioned.
The center edge 46b is spaced apart from the side edge 46a in the left-right direction, an intermediate portion in the up-down direction is positioned substantially at the center in the left-right direction of the rear surface 45, and an upper end side and a lower end side are the side It is formed in an arc shape so as to be continuous with the upper side and the lower side of the part edge 46 a, and the central part edge 46 b is located at the rearmost side of the recessed part 46.

As shown in FIG. 11 and FIG. 12, the recessed portion 46 having such a shape has four fingers other than the thumb placed on the top curved surface 43 and the finger-hanging projection 43a. When the grip portion 40 is gripped in a state where it is hung, all of the thumb m portion (see the two-dot chain line portions in FIGS. 11 and 12), which is the bulge portion on the palm side by the thumb bulb muscle near the base of the thumb, or It is formed on the assumption of the location facing the majority.
As described above, since the formation portion of the recessed portion 46 on the rear surface 45 of the grip portion 40 is set, four fingers other than the thumb are put on the top curved surface 43 and the finger-hanging projection 43a is fingered. When the grip portion 40 is gripped in a state where it is hung, the thumb m portion contacts the recessed portion 46 at the position where the recessed portion 46 exists.
Therefore, the position of the upper and lower operation switches 42, 42 provided on the lateral side surface 44 </ b> A of the grip portion 40 can be understood by sensuously grasping the relative positional relationship of the thumb m portion with respect to the position of the recessed portion 46. It becomes easy to perform switch operation by grasping sensuously without relying on visual observation.

As shown in FIG. 3 to FIG. 5 and FIG. 10 to FIG. 12, the rear surface 45 is formed with a ridge that bulges rearward from the rear surface portion on the rear surface portion where the recessed portion 46 is formed. A rear contact sensing portion 47a is formed.
Thereafter, the contact detection unit 47a is arranged in the horizontal direction at the vertical position corresponding to the height position between the operation switches 42 and 42 for adjusting the vertical handling depth disposed on the side surface 44A. It is formed so that the vertical position corresponding to the position between the upper and lower operation switches 42 and 42 can be easily grasped sensuously by contacting with the thumb m portion of the hand gripping the grip portion 40. It is comprised so that it may do.

A lateral contact sensing unit 47b is provided on the lateral side surface 44A side in succession to the rear contact sensing unit 47a on the rear surface 45 side.
As shown in FIGS. 3 to 5, the lateral contact sensing portion 47 b is a protrusion along the front-rear direction between a pair of upper and lower operation depth adjustment switches 42, 42 provided on the lateral side surface 44 </ b> A. It is formed by projecting from the lateral side surface 44A toward the same lateral side as the direction in which the operation switches 42, 42 project at the center position of the vertical distance between the operation switches 42, 42.

  And the amount of protrusion of the lateral contact sensing part 47b to the lateral side is set smaller than the amount of protrusion of the operation switches 42, 42 from the lateral side surface 44A. That is, the projecting height of the lateral contact sensing portion 47b from the lateral side surface 44A to the lateral side is formed to be lower than the projecting height of the operation switches 42, 42 from the lateral side surface 44A to the lateral side. With this configuration, as shown in FIGS. 11 and 12, when the grip 40 is gripped by placing the thumb along the lateral contact sensing portion 47b, the operation switches 42 and 42 are connected to each other with the belly of the thumb. The center position of the vertical interval can be sensed with high accuracy, and the operation switches 42 and 42 can be easily operated accurately.

As shown in FIG. 5, the front surface 48 of the grip portion 40 is erected in a substantially upright state on the lower side as viewed in the left-right direction, and the upper side thereof is bent forward to form a finger-hanging projection 43 a on the top curved surface 43. It is formed in a curved surface that is continuous and is curved backward.
In plan view, as shown in the cross-sectional views of FIGS. 7 and 10, an intermediate portion in the left-right direction is slightly formed on a curved surface that projects forward, and at the center position in the left-right direction. The partial bulging part 48a along the outer peripheral surface of the shaft 41 inside the grip part 40 is formed.

[Operation switch configuration]
As shown in FIGS. 11 and 12, the operation switches 42 and 42 for adjusting the handle depth provided on the side surface 44A on the side of the control seat 20 of the grip 40 have four fingers other than the thumb on the top curved surface 43. When the grip portion 40 is gripped with the finger placed on the protruding portion 43a for placing on the finger, it is positioned so as to be distributed between the upper side and the lower side of the vertical height position where the thumb is naturally positioned. The location of the lateral side surface 44A is defined.
When the thumb is positioned between the upper and lower operation switches 42 and 42 as described above, the upper and lower operation switches 42 and 42 are prevented from being operated by the thumb holding the grip portion 40. , 42 is set in the vertical direction, and either the upper or lower operation switches 42, 42 can be selectively operated by moving the thumb upward or downward.

Of the operation switches 42, 42 for adjusting the handling depth, the operation switch 42 located on the upper side is the operation switch 42 for deep handling, and the supply conveyance unit 34C of the vertical conveyance device 34 is connected to the front end side axis. By controlling the operation of the handling depth motor 35 so as to rotate around P and adjusting the corn mash delivery position with respect to the threshing feed chain 11A, the clamping position by the threshing feed chain 11A when the cocoon length is short To move the stock to the stockholder side and operate it to the deep side.
The operation switch 42 located on the lower side is an operation switch 42 for shallow handling, and similarly to the operation switch 42 for deep handling on the upper side, the supply conveyance section 34C of the vertical conveyance device 34 is rotated around the axis P on the front end side. The operation of the handling depth motor 35 is controlled so as to be rotated by the operation, and when the cocoon length is long, the clamping position by the threshing feed chain 11A is moved toward the tip side and operated to the shallow handling side. .

  Each of the operation switches 42 and 42 is configured by a vertically long pushbutton switch that is mounted on the lateral side surface 44A and is longer in the vertical direction than in the horizontal direction. The motor 35 is rotationally driven in either the forward or reverse direction commanded by the operation switches 42, 42, and the supply conveyance unit 34C of the vertical conveyance device 34 is swung in a predetermined direction around the axis P on the front end side. When the pushing operation is released, the operation of the working depth motor 35 is stopped.

  As shown in FIG. 4, the upper and lower operation switches 42 and 42 are configured such that the respective pressing operation directions a and b are directions away from each other in the vertical direction. In other words, the upper operation switch 42 is provided with the push operation direction a directed obliquely upward so that it can be pushed obliquely upward on the upper curved portion of the lateral side surface 44A. The lower operation switch 42 is provided with a pushing operation direction b directed obliquely downward so that the downwardly curved portion of the lateral side surface 44A can be pushed obliquely downward.

The upper and lower operation switches 42, 42 are in an upright posture in which the main transmission lever 4 is positioned at the neutral position N, and an angle at which the push operation direction b of the lower operation switch 42 is inclined with respect to the horizontal plane. The inclination angles of the push operation directions a and b with respect to the horizontal plane are made different so that the angle α at which the push operation direction a of the upper operation switch 42 is inclined with respect to the horizontal plane is larger than β.
With this configuration, four fingers other than the thumb are placed on the top curved surface 43 of the grip portion 40 in a standing posture with the main transmission lever 4 positioned at the neutral position N, and the fingers 43 are placed on the finger hanging projection 43a. As shown in FIG. 12, when the grip portion 40 is gripped with the hand held, the thumb in a substantially horizontal posture is operated in a direction approaching the other four fingers when operating the operation switch 42 positioned on the upper side. When the operation switch 42 located on the lower side is operated, the operation switch 42 is operated in a direction away from the other four fingers.

  In this structure, the operation in which the thumb approaches the other four fingers can be performed with relative ease, but the operation in the direction away from the other four fingers tends to make it difficult to move the thumb. At this time, if the lower operation switch 42 also has a large inclination angle with respect to the horizontal plane in the same manner as the upper operation switch 42, the lower operation switch 42 will be operated further away. As described above, by reducing the inclination angle β with respect to the horizontal plane, the amount of moving the thumb away from the horizontal plane can be reduced.

[Others]
The grip portion 40 is composed of a pair of front and rear divided bodies 40A and 40B that can be divided into two parts in the front-rear direction at the linear dividing line L shown in FIGS.
The upper and lower operation switches 42 and 42 are fixed in a state where the upper and lower operation switches 42 and 42 are sandwiched between the front and rear divided bodies 40A and 40B so as to straddle the dividing line L at the lateral side surface 44A.
Inside the front and rear divided bodies 40A and 40B, as shown in FIG. 9, a rib 49 that holds the shaft 41 inserted from the lower outside is held in a state of being held by joining the front and rear divided bodies 40A and 40B. The two split bodies 40A and 40B are attached to the shaft 41 in a state where the upper end of the shaft 41 is located above the operation switch 42 on the upper side.
Accordingly, as shown in FIG. 5, the dividing line L is formed substantially along the axis of the shaft 41 so that the shaft 41 exists on both sides of the dividing line L.

  Screw holes 41 a, 41 b, 41 c are formed at three positions in the vertical direction at the upper part of the shaft 41 so as to be inserted into the grip part 40. As shown in FIG. 4, a screw insertion through hole 40b corresponding to the central screw hole 41b among the three screw holes 41a, 41b, 41c in the vertical direction is formed. Further, as shown in FIG. 8, the split body 40B on the front side of the grip portion 40 corresponds to the two upper and lower screw holes 41a, 41b, 41c of the three upper and lower screw holes 41a, 41b, 41c. Two through holes 40a and 40c for inserting screws are formed.

When the grip portion 40 is attached to the shaft 41, a screw (not shown) is inserted into the screw insertion through hole 40b of the rear divided body 40A, and the screw is inserted at the center position in the vertical direction of the shaft 41. Screwed into the screw hole 41b and fixed with screws. Then, screws (not shown) are respectively inserted into the through holes 40 a and 40 c for inserting screws in the upper and lower parts of the divided body 40 B on the front side, and the screws are inserted into the screw holes 41 a and 41 c in the upper and lower parts of the shaft 41. Screw in and screw.
As a result, the grip portion 40 is attached and fixed to the shaft 41 in a state where the vertical position and the rotation of the shaft 41 around the axis are restricted.

As shown in FIGS. 8 to 10, the wiring harness 50 for the operation switches 42 and 42 for adjusting the handling depth is arranged as follows.
That is, as shown in FIG. 8, a slit-like long hole 41 d into which the harness 50 can be inserted is formed on the front side of the shaft 41, and the upper surface of the control box 24 equipped with the main transmission lever 4. It is formed so as to extend downward.
As shown in FIGS. 9 and 10, the wiring harness 50 connected to each operation switch 42, 42 is formed around the front side of the shaft 41 at a lower position in the grip portion 40 and formed on the front side thereof. The other end of the harness 50 is inserted into the elongated hole 41d. Then, on the lower side of the shaft 41 and below the upper surface of the control box 24, the other end side of the harness 50 is pulled out from the long hole 41d of the shaft 41 and linked to a required device (not shown). .

  FIGS. 15 to 21 show the grip 40 of the main transmission lever 4, FIG. 15 is a rear view of the grip 40, FIG. 16 is a front view of the grip 40, and FIG. 17 is a left side of the grip 40. 18 is a right side view of the grip portion 40, FIG. 19 is a plan view of the grip portion 40, FIG. 20 is a bottom view of the grip portion 40, and FIG. 21 is a perspective view of the grip portion 40.

[Other Embodiment 1]
In the above-described embodiment, the operation switches 42, 42 for adjusting the handling depth are shown as having a structure provided on the lateral side surface 44A formed by a curved surface recessed toward the opposite side of the control seat 20. For example, as shown in FIG. 13, the upper and lower operation switches 42 and 42 are provided on a flat lateral side surface 44 </ b> A along the vertical direction that is not a curved surface, and the operation switches 42 and 42 are pressed. The operation directions a and b may be operated in directions away from each other. That is, the operation switches 42 and 42 for adjusting the handling depth are set such that the pressing operation direction a (or b) of one operation switch 42 is vertical with respect to the pressing operation direction b (or a) of the other operation switch 42 Further, the pushing operation direction b (or a) of the other operation switch 42 may be a horizontal direction or a direction away from the one operation switch 42 in the vertical direction.
Other configurations may be the same as those in the above-described embodiment.

[Second embodiment]
In the above-described embodiment, the upper and lower operation switches 42 and 42 are in a standing posture in which the main transmission lever 4 is positioned at the neutral position N, and the pushing operation direction b of the lower operation switch 42 is relative to the horizontal plane. The inclination angles of the push operation directions a and b with respect to the horizontal plane are made different so that the push operation direction a of the upper operation switch 42 inclines with respect to the horizontal plane is larger than the tilt angle β. However, the present invention is not limited to this, and the inclination angle with respect to the horizontal plane of the push operation direction a of the upper operation switch 42 and the push operation direction b of the lower operation switch 42 may be the same.

[3 of another embodiment]
In the above-described embodiment, the push operation direction a of the upper operation switch 42 is directed upward, and the push operation direction b of the lower operation switch 42 is directed downward. However, the present invention is not limited thereto. For example, you may comprise as follows.
As shown in FIG. 14A, the push operation direction a of the upper operation switch 42 is directed obliquely upward, and the push operation direction b of the lower operation switch 42 is directed horizontally.
As shown in FIG. 14B, the pushing operation direction a of the upper operation switch 42 is directed horizontally, and the pushing operation direction b of the lower operation switch 42 is directed obliquely downward.
As shown in FIG. 14C, the push operation direction b of the lower operation switch 42 is directed obliquely upward from the horizontal direction, and the push operation direction a of the upper operation switch 42 is further directed upward.
As shown in FIG. 14D, the push operation direction b of the upper operation switch 42 is directed obliquely downward from the horizontal direction, and the push operation direction a of the lower operation switch 42 is further directed downward.
Other configurations may be the same as those in the above-described embodiment.

[4 of another embodiment]
In the above-described embodiment, among the operation switches 42 and 42 for adjusting the handling depth, those having a structure in which the operation switch 42 for deep handling is provided on the upper side and the operation switch 42 for shallow handling is provided on the lower side. Although illustrated, not only this but the operation switch 42 for shallow handling may be provided in the upper side, and the operation switch 42 for deep handling may be provided in the downward side.
Other configurations may be the same as those in the above-described embodiment.

[5 of another embodiment]
In the above-described embodiment, the top curved surface 43 of the grip 40 of the main transmission lever 4 as an operation lever to be equipped with the operation switches 42, 42 for adjusting the handling depth is set so that the middle portion is upward in both the left-right direction and the front-rear direction. However, the present invention is not limited to this. For example, the intermediate portion in the left-right direction is bent upward, and is a single curved surface made of a flat surface that does not bend in the front-rear direction. It may be formed.
Other configurations may be the same as those in the above-described embodiment.

[6 of another embodiment]
In the embodiment described above, the lateral contact sensing unit 47b has a protrusion that protrudes laterally from the lateral side surface 44A lower than the projection height of the operation switches 42 and 42 laterally from the lateral side surface 44A. However, the present invention is not limited to this. For example, it is the same as the protruding height of the operation switches 42, 42, or higher than the protruding height of the operation switches 42, 42, or configured by a concave groove. May be.
Other configurations may be the same as those in the above-described embodiment.

[7 of another embodiment]
In the above-described embodiment, the rear contact sensing unit 47a is formed by a protrusion continuous with the lateral contact sensing unit 47b. However, the present invention is not limited to this. For example, a large number of protrusions are arranged in a row. Alternatively, it may be constituted by a concave groove. Moreover, you may comprise by the protrusion which is not continuous with the side contact detection part 47b.
Other configurations may be the same as those in the above-described embodiment.

[8 of another embodiment]
In the above-described embodiment, the rear contact sensing portion 47a is formed on the recessed portion 46 provided on the rear surface 45 of the grip portion 40. However, the present invention is not limited to this, and the rear surface 45 that does not include the recessed portion 46 is provided on the rear surface 45. A contact sensing unit 47a may be provided.
Other configurations may be the same as those in the above-described embodiment.

[9 of another embodiment]
In the above-described embodiment, the main transmission lever 4 is disposed on the left side of the control seat 20 and is configured to be operated with the left hand. It may have a structure in which the shift lever 4 is provided and is operated with the right hand. In this case, the lateral side surface 44 </ b> A on which the operation switches 42 and 42 are provided is on the left side of the grip portion 40.
Other configurations may be the same as those in the above-described embodiment.

[10 of another embodiment]
In the above embodiment, the main transmission lever 4 is provided with the operation switches 42 and 42 for adjusting the handling depth. However, the present invention is not limited to this. For example, the auxiliary transmission lever or the lifting / lowering of the work device is performed. Various operation levers such as an operation lever can be provided. Other configurations may be the same as those in the above-described embodiment.

[11 of another embodiment]
In the above embodiment, the switch provided on the lateral side surface 44A of the main transmission lever 4 is provided with only the operation switches 42, 42 for adjusting the handling depth. However, the present invention is not limited to this, and other operation switches are provided. It may be provided. Other configurations may be the same as those in the above-described embodiment.

  Although the present invention has shown a four-row cutting type self-removing combine as a combine, it can be applied to, for example, a combine of five or more cuts regardless of the number of cutting lines.

4 Operation lever 20 Steering seat 40 Grip part 41 Shaft 42 Operation switch 43 Top curved surface 44A Side surface 47a Rear contact sensing part 47b Lateral contact sensing part a Pushing operation direction b Pushing operation direction

Claims (8)

An operating device for a combine that has a handle of the operating lever that can be moved in the front-rear direction, with operating switches for adjusting the handle depth distributed on the side surface located on the side of the control seat in the left-right direction. Because
The operating switch for adjusting the handling depth is such that the operating direction of one operating switch is a direction away from the operating direction of the other operating switch, and the operating direction of the other operating switch is horizontal. Alternatively, the combine operating device is configured so as to be separated in a vertical direction with respect to a pressing operation direction of the one operation switch.   A lateral side surface of the grip portion provided with the operation switch is formed in a curved surface that is recessed toward the opposite side of the control seat in the left-right direction, and obliquely upward toward a curved portion on the upper side of the curved surface. The combine operation device according to claim 1, wherein the operation switch that can be pushed is provided, and the operation switch that can be pushed obliquely downward is provided in a curved portion on a lower side of the curved surface.   The push operation direction of the operation switch disposed on the lateral side is such that the push operation direction of the upper operation switch is relative to the horizontal plane than the angle at which the push operation direction of the lower operation switch is inclined with respect to the horizontal plane. 3. The combine operating device according to claim 1 or 2, wherein the combine operating device is tilted so that the tilt angle becomes large.   The top curved surface in which the four fingers other than the thumb can be put on the top of the grip portion of the operation lever and the middle portion in the left-right direction is bent upward is formed. A combine operating device according to claim 1.   A lateral contact sensing unit comprising a ridge or a concave groove is provided between the operation switches arranged in the vertical direction on the lateral side surface of the grip part on which the operation switch is disposed. The combine operating device according to claim 4.   The lateral contact sensing unit is configured as a ridge, and the projecting height of the lateral contact sensing unit from the lateral side to the lateral side is higher than the projecting height of the operation switch from the lateral side to the lateral side. The combine operating device according to claim 5, wherein the combine operating device is formed low.   A rear contact sensing portion comprising a protrusion that bulges rearward from the rear surface portion or a concave groove that is recessed forward is provided between the upper and lower operation switches on the rear surface side of the grip portion. The combine operating device according to any one of claims 1 to 6, wherein the combine operating device is formed in a vertical position.   The shaft of the operation lever provided with the grip portion is configured such that the upper end side is inserted into the grip portion, and the upper end of the shaft is positioned above the operation switches provided in the grip portion. The combine operating device according to any one of claims 1 to 7.

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