JP6882156B2 - Work vehicle - Google Patents

Description

The present invention relates to a work vehicle such as a tractor.

Conventionally, a work vehicle disclosed in Patent Document 1 is known.
The work vehicle disclosed in Patent Document 1 includes a vehicle body that can travel, a steering handle, a column cover that covers the outer circumference of the rotation shaft of the steering handle, and a shuttle lever that can switch between forward, neutral, and reverse positions (forward / backward switching). Lever) and. The shuttle lever has a grip arranged in the vicinity of the steering handle and a lever body (connecting member) connected to the grip.

Japanese Patent No. 6181409

In the above work vehicle, the lever body of the shuttle lever is exposed, and the detection device for detecting the operating position of the shuttle lever is arranged inside the column cover. Therefore, it is necessary to extend the lever body of the shuttle lever for a long time while bending it to the detection device arranged inside the column cover.
The present invention has been made in view of such a prior art, and an object of the present invention is to provide a work vehicle capable of making the shuttle lever a compact and simple structure.

The work vehicle according to one aspect of the present invention includes a shuttle lever having a steering handle, a lever body that can swing in a forward position, a neutral position, and a reverse position, and a grip provided on one end side of the lever body. A shuttle that is attached to a side portion of the column cover and a column cover that covers the outer periphery of the rotation shaft of the steering handle, has an opening through which the lever body is inserted, and accommodates the other end side of the lever body. It is equipped with a lever cover.

Preferably, the shuttle lever cover is equipped with an operation switch that performs an operation different from that of the shuttle lever.
Preferably, the operation switch is arranged at a position away from the rotation axis with respect to the grip, and the shuttle lever cover is below the reference surface provided with the opening around the operation switch. It has a recessed recess.

Preferably, the operation switch includes a first operation switch and a second operation switch arranged in the swing direction of the shuttle lever, and the recess is a first recess provided around the first operation switch. , A second recess provided around the second operation switch, and the like.
Preferably, the second recess is recessed below the first recess.
Preferably, the height of the upper surface of the second operation switch is equal to or lower than the reference plane.

Preferably, the shuttle lever cover guides a take-out portion for taking out the cable from the inside of the shuttle lever cover to the outside and a cable taken out from the take-out part along the outer surface of the shuttle lever cover. It has a guide portion, and the take-out portion and the guide portion are provided on the rotation shaft side of the shuttle lever cover and are arranged inside the column cover.

Preferably, the cable is provided with a position detection device that is arranged inside the shuttle lever cover and outputs a signal based on the swing position of the lever body, and the cable transmits the signal output from the position detection device. Includes cable.
Preferably, the shuttle lever cover has an upper cover having an upper engaging portion and a lower cover having a lower engaging portion that engages with the upper engaging portion, and the upper engaging portion and the said. One of the lower engaging portions has an engaging hole, and one of the upper engaging portion and the lower engaging portion has an engaging claw that is engaged with the engaging hole. The engaging portion and the lower engaging portion are provided on the rotation shaft side of the shuttle lever cover and are arranged inside the column cover.

Preferably, the upper engaging portion and the lower engaging portion are provided on the first engaging portion provided on the proximal side of the guide portion in the guiding direction of the cable and on the tip end side in the guiding direction, respectively. The second engaging portion includes the second engaging portion, and the second engaging portion is provided at a position farther from the rotation axis than the first engaging portion.
Preferably, the operation lever is provided so as to project from the column cover to one side and perform an operation different from that of the shuttle lever, and the cover for the shuttle lever is provided so as to project from the column cover to the other side. The other side end face is located on a virtual line extending along the protruding direction of the operating lever.

Preferably, the cover for the shuttle lever and the operation lever are integrated with the operation lever which is provided so as to project to one side from the column cover and performs an operation different from that of the shuttle lever.
Preferably, it is arranged from the inside of the shuttle lever cover to the inside of the column cover, and includes a connecting member for connecting the operation lever and the shuttle lever cover.

According to the above work vehicle, since the shuttle lever has an opening through which the lever body of the shuttle lever is inserted and a cover for the shuttle lever that accommodates the other end side of the lever body is provided, the shuttle lever is inside the cover for the shuttle lever. A detection device that detects the operation position of the above can be arranged. Therefore, even if the lever body is shortened, it can be connected to the detection device, and the shuttle lever can have a compact and simple structure.

Further, when the shuttle lever cover is equipped with an operation switch that performs an operation different from that of the shuttle lever, the operation switch can be arranged in the vicinity of the shuttle lever, and the operability of the operation switch is improved.
Further, the operation switch is arranged at a position away from the rotation axis from the grip, and the shuttle lever cover has a concave portion recessed below the reference surface provided with an opening around the operation switch. In this case, when the driver operates the shuttle lever while grasping the steering handle, it is possible to prevent the driver's finger or the like from hitting the operation switch and erroneously operating the shuttle lever.

Further, the operation switch includes a first operation switch and a second operation switch arranged in the swing direction of the shuttle lever, and the recesses are a first recess provided around the first operation switch and a second operation switch. When the driver operates the shuttle lever while grasping the steering wheel when the second concave portion provided around the first operation switch and the second operation switch are included, a finger or the like hits each of the first operation switch and the second operation switch. It is possible to prevent erroneous operation.

Further, when the second recess is recessed below the first recess, the second operation switch is erroneously operated when trying to operate the first operation switch, or the first operation is erroneously operated when trying to operate the second operation switch. It is possible to prevent erroneous operations such as operating a switch.
Further, when the upper surface of the second operation switch has a height equal to or lower than the reference surface, erroneous operation of the first operation switch and the second operation switch can be more reliably prevented.

The shuttle lever cover includes a take-out part for taking out the cable from the inside of the shuttle lever cover to the outside, and a guide part for guiding the cable taken out from the take-out part along the outer surface of the shuttle lever cover. When the take-out part and the guide part are provided on the rotation shaft side of the shuttle lever cover and are arranged inside the column cover, the cable taken out from the inside of the shuttle lever cover to the outside is a column. Since the guide is provided inside the cover along the outer surface of the shuttle lever cover, the possibility that the cable is damaged by receiving an external force can be reduced.

Further, when a position detection device is provided inside the shuttle lever cover and outputs a signal based on the swing position of the lever body, and the cable includes a cable for transmitting a signal output from the position detection device, The shuttle lever and the position detection device can be connected inside the shuttle lever cover and at a short distance.
Further, the shuttle lever cover has an upper cover having an upper engaging portion and a lower cover having a lower engaging portion that engages with the upper engaging portion, and has an upper engaging portion and a lower engaging portion. One of them has an engaging hole, and one of the upper engaging portion and the lower engaging portion has an engaging claw that is engaged with the engaging hole, and the upper engaging portion and the lower engaging portion have an engaging hole. , When the shuttle lever cover is provided on the rotating shaft side and is arranged inside the column cover, the upper engaging portion and the lower engaging portion are engaged with the engaging hole by the engaging claw, so that they are engaged. And the disengagement can be easily and surely performed. Further, since the upper engaging portion and the lower engaging portion are arranged inside the column cover, it is possible to prevent the engagement from being disengaged by an external force.

Further, the upper engaging portion and the lower engaging portion are the first engaging portion provided on the base end side of the cable in the guiding direction and the second engaging portion provided on the tip end side in the guiding direction, respectively. When the second engaging portion is provided at a position farther from the rotation axis than the first engaging portion, the second engaging portion provided on the tip side in the guide direction is the guide portion. It is prevented from getting in the way of the cable guided by. Further, since the guide portion can be formed to be long, the cable can be reliably guided over a long distance.

Further, it is provided with an operation lever that protrudes from the column cover to one side and performs an operation different from that of the shuttle lever, and the shuttle lever cover is provided so as to protrude from the column cover to the other side and the other side. When the end face of the shuttle lever is located on a virtual line extending along the protruding direction of the operating lever, the shuttle lever cover is less likely to obstruct the driver's front view, which is an obstacle when visually recognizing the meter panel in front of the driver's seat. It does not become.

Further, when the shuttle lever cover and the operation lever are integrated, the operation lever and the shuttle lever cover are provided so as to project from the column cover to one side and perform an operation different from that of the shuttle lever. Since the and is integrated, the operation lever and the shuttle lever cover can be integrally attached to and detached from the column cover. Therefore, the man-hours for attaching / detaching the operation lever and the shuttle lever cover can be reduced.

Further, when the shuttle lever cover is arranged from the inside to the inside of the column cover and a connecting member for connecting the operation lever and the shuttle lever cover is provided, the connecting member is used for the operation lever and the shuttle lever. It can be integrated by connecting it to the cover. Further, since the connecting member is arranged from the inside of the shuttle lever cover to the inside of the column cover, it is not visible from the outside.

It is a figure which looked at the control cover, the steering handle, the shuttle lever, the cover for the shuttle lever, etc. from the axial direction of the rotation axis of the steering handle. It is the figure which looked at the column cover, the steering handle, the shuttle lever, the cover for the shuttle lever, etc. from the axial direction of the rotation axis of the steering handle. It is the figure which looked at the column cover, the steering handle, the shuttle lever, the cover for the shuttle lever, etc. from the rear orthogonal to the axial direction of the rotation axis of the steering handle. It is the figure which looked at the shuttle lever from the rear. It is a perspective view which shows the internal structure of the cover for a shuttle lever. It is a perspective view which saw the urging mechanism with respect to a shuttle lever from the upper left side. It is an exploded perspective view of the cover for a shuttle lever. It is a perspective view which looked at the cover for a shuttle lever from the rear lower part. It is a top view of the top cover. It is a figure which shows the internal structure of the cover for a shuttle lever by the vertical cross section (AA cross section of FIG. 15) in the longitudinal direction of a cover. It is a figure which shows the shape of the concave part of the cover for a shuttle lever by the vertical cross section (BB cross section of FIG. 15) in the short side direction of a cover. It is the figure which looked at the cover for a shuttle lever, the shuttle lever, etc. from one side (left side) in the longitudinal direction of a cover. It is a perspective view which shows the right part of the cover for a shuttle lever and a connecting member. It is the figure which looked at the lower cover from the rear. It is a top view which shows the cover for a shuttle lever and a connecting member. It is the bottom view which showed the internal structure by removing the lower cover of the cover for a shuttle lever. It is a perspective view which shows the structure which the shuttle lever and the operation lever are connected by the connection plate. It is a perspective view which shows a shuttle lever, a detection switch, a cam and the like. It is a top view which shows the cover for a shuttle lever, a connecting member, a column cover, a control lever and the like. It is a rear view which shows the cover for a shuttle lever, a connecting member, a column cover, a control lever and the like. It is a side view of a work vehicle.

Hereinafter, embodiments of the work vehicle according to the present invention will be described with reference to the drawings as appropriate.
FIG. 21 is a side view showing an embodiment of the work vehicle according to the present invention. In the case of this embodiment, the work vehicle is the tractor 1. However, the work vehicle is not limited to the tractor 1, and may be a work vehicle other than the tractor 1. For example, it may be an agricultural vehicle such as a combine harvester or a transplanter, or a construction vehicle such as a loader work machine.

Hereinafter, the front side (left side of FIG. 21) of the driver seated in the driver's seat 13 of the tractor (work vehicle) 1 is the front, the rear side of the driver (right side of FIG. 21) is the rear, and the left side of the driver (FIG. 21). The front side) will be described as the left side, and the driver's right side (the back side in FIG. 21) will be described as the right side.
As shown in FIG. 21, the tractor 1 has a traveling vehicle body 2. The vehicle body 2 has a prime mover E1, a flywheel housing 3, a clutch housing 4, a mission case 5, and a front axle frame 6.

The prime mover E1 is a diesel engine. The prime mover E1 is located in front of the tractor 1 and is covered by the bonnet 10. The prime mover E1 may be an electric motor, or may be a hybrid type having a diesel engine and an electric motor.
The flywheel housing 3 is connected to the rear part of the prime mover E1 and houses the flywheel. The clutch housing 4 is connected to the rear portion of the flywheel housing 3. The clutch housing 4 houses a clutch that transmits and disconnects the power of the prime mover E1 transmitted via the flywheel.

The transmission case 5 is connected to the rear portion of the clutch housing 4. The transmission case 5 houses a transmission (transmission) that shifts power transmitted via a clutch. The transmission has a forward / backward switching mechanism 7 that reverses or reverses the power transmitted by the transmission to switch to forward or reverse output.
The front axle frame 6 is fixed to the prime mover E1 and projects forward from the prime mover E1. The front axle case 15 is supported by the front axle frame 6.

The tractor 1 has a traveling device 8 that supports the vehicle body 2 so as to travel. The traveling device 8 is a wheel-type traveling device having a plurality of front wheels provided at the front portion of the vehicle body 2 and a plurality of rear wheels provided at the rear portion of the vehicle body 2. The plurality of front wheels include a left front wheel 11L supported on the left side of the front axle case 15 and a right front wheel 11R supported on the right side of the front axle case 15. The plurality of rear wheels include a left rear wheel 12L supported on the left side of the mission case 5 and a right rear wheel 12R supported on the right side of the mission case 5. The traveling device may be a semi-crawler type traveling device (a traveling device having a front wheel and a crawler type traveling mechanism adopted instead of the rear wheel).

The left front wheel 11L and the right front wheel 11R are steering wheels that can be steered by moving the cylinder rod of the steering cylinder 16 provided in the front portion of the front axle case 15. The direction of the vehicle body 2 can be changed (the vehicle body 2 can be steered) by steering the front wheels 11L and 11R. The steering cylinder 16 is composed of a hydraulic cylinder.
Of the front wheels 11L and 11R and the rear wheels 12L and 12R, at least the rear wheels 12L and 12R are drive wheels, and the power output from the transmission is transmitted to the drive wheels.

A driver's seat 13 on which the driver sits is mounted on the rear portion of the vehicle body 2. A control device 14 is provided in front of the driver's seat 13. The control device 14 has a control base 17 covered with a control cover 18. The control cover 18 is supported by the support frame 9. The support frame 9 is fixed to the upper part of the support member 39 fixed to the vehicle body 2. As shown in FIG. 1, a meter panel 29 is provided above the control cover 18 so that the driver who is seated in the driver's seat 13 can visually recognize the meter panel 29.

The cockpit 17 has a bracket 23 erected on the vehicle body 2. A steering handle 19, a steering valve 20, and the like are supported on the bracket 23.
The steering handle 19 is a member that operates the steering of the vehicle body 2, and is manually operated by the driver. The steering handle 19 has a grip portion 19a that the driver grips and steers, and a support portion 19b that supports the grip portion 19b on a rotation shaft (steering shaft) 22. In the case of this embodiment, the grip portion 19a is formed in an annular shape.

The rotating shaft 22 is connected to the lower part of the steering handle 19 and extends downward. The rotary shaft 22 is inserted through the steering column 24 and is rotatably supported. The lower part of the steering column 24 is supported by the bracket 23. The periphery of the upper part of the steering column 24 is covered with a column cover 25 provided on the upper part of the steering cover 18.
The steering valve 20 is a valve that controls the steering cylinder 16. The steering valve 20 is a rotary valve operated by the steering handle 19 to control the flow rate of the hydraulic oil and switch the direction of the hydraulic oil. In other words, the steering valve 20 is a valve capable of outputting hydraulic oil that transmits the operation of the steering handle 19. More specifically, the steering valve 20 outputs hydraulic oil corresponding to the amount of operation of the steering handle 19 from the port corresponding to the operation direction. The hydraulic oil output from the steering valve 20 is sent to the steering cylinder 16 to move the cylinder rod of the steering cylinder 16. As a result, the left front wheel 11L and the right front wheel 11R are steered in response to the rotation operation of the steering handle 19.

As shown in FIGS. 1 to 3, a shuttle lever cover 26 is attached to one side of the column cover 25. The shuttle lever cover 26 accommodates the proximal end side (rotating shaft 22 side) of the shuttle lever (forward / backward switching lever) 21. The shuttle lever cover 26 is arranged below the steering handle 19. The shuttle lever cover 26 extends in a direction away from the rotation shaft 22 from the side portion of the column cover 25. Specifically, the shuttle lever cover 26 is attached to the left side portion of the column cover 25 and extends so as to project from the left side portion toward the left side.

The shuttle lever 21 is a member that performs an operation of switching the traveling direction of the vehicle body 2. More specifically, by operating (swinging) the shuttle lever 21 forward or backward, the forward / backward switching mechanism 7 is switched, and the traveling direction (traveling direction) of the vehicle body 2 is switched to the forward direction or the reverse direction.
The shuttle lever 21 is provided below the grip portion 19a of the steering handle 19. The shuttle lever 21 can be switched between a forward position, a neutral position, and a reverse position by swinging forward or backward. 1 to 3 show the shuttle lever 21 in the neutral position. The shuttle lever 21 swings forward (in the direction of arrow A1 in FIG. 2) to move forward, and swings backward (in the direction of arrow A2 in FIG. 2) to move backward. Hereinafter, the movement direction (front-back direction) of the shuttle lever 21 indicated by arrows A1 and A2 may be referred to as a “swing direction of the shuttle lever 21”.

When the shuttle lever 21 is in the neutral position, power is not output from the transmission to the traveling device 8. When the shuttle lever 21 is operated to the forward position, the forward / backward switching mechanism 7 is in a state of outputting forward power, and the traveling direction of the vehicle body 2 is switched to the forward direction. When the shuttle lever 21 is operated to the reverse position R, the forward / backward switching mechanism 7 is in a state of outputting the reverse power, and the traveling direction of the vehicle body 2 is switched to the reverse direction.

As shown in FIGS. 2 to 4, the shuttle lever 21 has a lever body 30 and a grip 31. The tip end side (one end side) of the lever body 30 is arranged outside the shuttle lever cover 26, and the grip 31 is attached. The base end side (the other end side) of the lever body 30 is housed inside the shuttle lever cover 26.
As shown in FIG. 4, the lever main body 30 has a first portion 30a, a second portion 30b, and a third portion 30c. The first portion 30a is located above the lever body 30. As shown in FIG. 3, the first portion 30a is arranged above the shuttle lever cover 26 and below the grip portion 19a of the steering handle 19. The first portion 30a is linear, and the base end portion is arranged on the rotation shaft 22 side of the steering handle 19, and the tip end portion is arranged on the side opposite to the rotation shaft 22 of the steering handle 19. In other words, the first portion 30a extends from the base end portion to the tip end portion in a direction away from the rotation shaft 22.

As shown in FIG. 4, the first portion 30a is inclined and extends so as to gradually move upward from the rotation shaft 22 side (arrow D1 side) toward the side opposite to the rotation shaft 22 (arrow D2 side). .. The second portion 30b bends from the proximal end portion of the first portion 30a and extends downward. The second portion 30b extends through an opening (lever opening 33 described later) formed on the upper surface of the shuttle lever cover 26. The tip end portion (upper end portion) of the second portion 30b is located outside (upper side) of the shuttle lever cover 26, and the base end portion (lower end portion) is located inside the shuttle lever cover 26. The third portion 30c is linear, and the proximal end side (arrow D2 side) is connected to the proximal end portion (lower end portion) of the second portion 30b, and the rotation shaft 22 side (arrow) from the proximal end portion. It extends to the D1 side). The base end side (lower portion) of the second portion 30b and the third portion 30c of the lever body 30 are housed inside the shuttle lever cover 26.

As shown in FIGS. 4 and 5, a through hole 30d is provided in the middle of the third portion 30c in the extending direction. The pivot 32 is inserted through the through hole 30d. The pivot 32 is supported by a shaft support member 37. The shaft support member 37 supports the lever body 30 so as to swing upward or downward with the pivot 32 as a fulcrum. The shaft support member 37 rotates about the axis in the vertical direction in response to the forward (arrow A1 direction) or rearward (arrow A2 direction) swing of the lever body 30. As shown in FIG. 10, a position detection sensor 38 as a position detection device is arranged inside the shuttle lever cover 26. As shown in FIGS. 4 and 5, the input shaft 38a of the position detection sensor 38 is connected to the lower part of the shaft support member 37. The input shaft 38a can rotate around the axis in the vertical direction, and rotates with the rotation of the shaft support member 37. The position detection sensor 38 is, for example, a potentiometer, which detects the rotation of the input shaft 38a and outputs a signal based on the detection result. The rotation of the input shaft 38a is caused by swinging the lever body 30 forward or backward. Therefore, the position detection sensor 38 outputs a signal due to the swing of the lever body 30. An output cable 41 (hereinafter referred to as “first cable 41”) is connected to the position detection sensor 38. The first cable 41 transmits a signal output from the position detection sensor 38.

As shown by the arrow D3 in FIG. 4, the lever body 30 can swing upward or downward with the pivot 32 as a fulcrum. Specifically, in the lever body 30, when the first part 30a side (grip 31 side) is raised with the pivot 32 as a fulcrum, the third part 30c side (opposite side to the grip 31) is lowered, and the first part 30a side is raised. When lowered, the third portion 30c side rises. That is, the lever body 30 can swing upward or downward with the pivot 32 as a fulcrum together with the grip 31. The lever body 30 is urged in a direction in which the grip 31 side is lowered by an urging mechanism described later. Therefore, the operation of swinging (pulling up) the lever body 30 upward is performed by pulling up the grip 31 against the urging force of the urging mechanism.

As shown in FIGS. 6 and 10, the urging mechanism includes a support member 86, a mounting plate 65, an elastic body 91, a first support shaft 92, and a second support shaft 93. The support member 86 has a front portion 86a, a rear portion 86b, and a lower portion 86c. As shown in FIGS. 5 and 6, the front portion 86a is erected on the upper surface of the connecting member 80, which will be described later, and is arranged in front of the shaft support member 37 (in the direction of arrow A1). The rear portion 86b is erected on the upper surface of the connecting member 80 and is arranged behind the shaft support member 37 (in the direction of arrow A2). In FIG. 5, the support member 86 is shown by a virtual line, and the elastic body 91, the first support shaft 92, and the second support shaft 93 are omitted. As shown in FIGS. 6 and 10, the lower portion 86c is arranged below the shaft support member 37 and above the connecting member 80, and connects the front portion 86a and the rear portion 86b.

As shown in FIG. 6, the mounting plate 65 is fixed to the upper portions of the front portion 86a and the rear portion 86b of the support member 86 by bolts B3. The elastic body 91 is made of an elastic material such as rubber. The elastic body 91 has a first elastic portion 91a and a second elastic portion 91b. The first elastic portion 91a extends in the front-rear direction on the left side (grip 31 side) (arrow D2 side) of the shaft support member 37. The first elastic portion 91a has a through hole 91c through which the third portion 30c of the lever body 30 penetrates. The second elastic portion 91b is provided at the front portion and the rear portion of the first elastic portion 91a, respectively, and extends in the vertical direction. As shown in FIG. 10, the upper portion of the second elastic portion 91b is in contact with the lower surface of the mounting plate 65, and the lower portion is in contact with the upper surface of the lower portion 86c of the support member 86. The first support shaft 92 projects forward from the front portion of the elastic body 91 and is supported by the front portion 86a of the support member 86. The second support shaft 93 projects rearward from the rear portion of the elastic body 91 and is supported by the rear portion 86b of the support member 86. The first support shaft 92 and the second support shaft 93 are arranged to the left (arrow D2 side) of the pivot shaft 32. The elastic body 91 is swingably supported with respect to the support member 86 with the first support shaft 92 and the second support shaft 93 as fulcrums. The swing of the elastic body 91 is caused by swinging above or below the lever body 30.

When the shuttle lever 21 shown in FIG. 5 is not operated, the elastic body 91 is not elastically deformed, and the lever body 30 is in the position where the grip 31 side (arrow D2 side) is lowered (the position where it is not pulled up). Yes, the side opposite to the grip 31 side (arrow D1 side) is in the raised position. When the shuttle lever 21 is swung upward (the grip 31 is pulled up), the elastic body 91 is elastically deformed (compressed and deformed) by the upward force F1 received from the lever body 30, and the first support shaft 92 and the second support shaft 92 and the second are It swings upward (in the direction of arrow C1) with the support shaft 93 as a fulcrum. The shuttle lever 21 swings upward as the elastic body 91 swings.

When the operation of swinging the shuttle lever 21 upward (pulling up the grip 31) is not performed, the upward force F1 received from the lever body 30 does not act on the elastic body 91. Therefore, the elastic body 91 moves downward (in the direction opposite to the arrow C1 direction) with the first support shaft 92 and the second support shaft 93 as fulcrums due to the force (elastic restoring force) that tries to return to the original shape from the compression-deformed state. Swing. As a result, the shuttle lever 21 returns to the position where the grip 31 side is lowered (the position where it is not pulled up).

As described above, the lever body 30 of the shuttle lever 21 is urged in the direction in which the grip 31 side is lowered by the elastic restoring force (urging force) of the elastic body 91, and the lever body 30 is swung upward. The operation of pulling up the grip 31) is performed against the elastic restoring force (urging force) of the elastic body 91.
When the shuttle lever 21 is in the neutral position, the lever body 30 can swing upward (pull up) against the urging force of the urging mechanism, and can swing forward or backward in the pulled up state. Is. In other words, the lever body 30 is regulated so that it cannot swing forward or backward when the shuttle lever 21 is not in the neutral position. The operation of the lever body 30 is regulated by the guide member 36.

As shown in FIG. 5, the guide member 36 is held below the mounting plate 65 by the holding member 88. The holding member 88 is fixed by bolts B4 on a support base 87 formed on the left side of the support member 86.
As shown in FIGS. 4 and 5, the guide member 36 is a substantially square tubular member having a space S1 into which the other end of the lever body 30 is inserted. A first groove 36a, a second groove 36b, and a third groove 36c are formed on the upper portion of the guide member 36. The first groove 36a, the second groove 36b, and the third groove 36c are grooves recessed from the lower side to the upper side, and are provided side by side in the front-rear direction.

When the shuttle lever 21 is in the neutral position, the tip end portion of the third portion 30c is fitted into the second groove 36b and locked. At this time, the tip of the third portion 30c is urged upward by the urging force of the urging mechanism. Therefore, the shuttle lever 21 is held (locked) in the second groove 36b in the neutral position and cannot swing forward or backward.
When the shuttle lever 21 swings upward against the urging force of the urging mechanism in the neutral position (pulls up the grip 31 side of the lever body 30), the other end of the third portion 30c is shown by arrow D4. It moves downward and separates from the second groove 36b. As a result, the other end of the third portion 30c can be moved forward or backward as shown by arrows D5 and D6. That is, the shuttle lever 21 is in a state where it can swing in the front-rear direction. From this state, when the grip 31 side of the shuttle lever 21 is swung forward (in the direction of arrow A1) and locked in the first groove 36a, the shuttle lever 21 is in the forward position. When the grip 31 side of the shuttle lever 21 is swung rearward (in the direction of arrow A2) and locked in the third groove 36c, the shuttle lever 21 is in the reverse position.

As the shuttle lever 21 swings, the shaft support member 37 and the input shaft 38a rotate around the axis in the vertical direction. As a result, the position detection sensor 38 detects the position of the shuttle lever 21 (neutral position, forward position, reverse position). The position detection sensor 38 transmits a signal based on the detected detection result (position of the shuttle lever 21) to the forward / reverse switching mechanism 7 via the first cable 41 or the like. As a result, the switching operation by the forward / backward switching mechanism 7 is executed. Specifically, when the shuttle lever 21 is operated to the forward position, the forward / backward switching mechanism 7 is switched to a state in which forward power is output. When the shuttle lever 21 is operated to the reverse position, the forward / backward switching mechanism 7 is switched to a state in which the reverse power is output.

As described above, the lever body 30 can be pulled up in the neutral position and can swing forward or backward in the pulled up state. The pulling operation and swinging operation of the lever body 30 can be performed by the driver (operator) seated in the driver's seat 13 by gripping the grip 31.
As shown in FIG. 4, the grip 31 is attached to one end side (tip side) of the lever body 30 and is located above the shuttle lever cover 26. The driver seated in the driver's seat 13 can operate the shuttle lever 21 by grasping the grip 31 while seated. The driver seated in the driver's seat 13 has, for example, hooked the thumb of one hand (in the case of the present embodiment, the left hand) on the steering handle 19 and rotates around the base of the thumb while rotating the other hand. The shuttle lever 21 can be operated with a finger.

As shown in FIGS. 1 to 3, the shuttle lever cover 26 is provided with an operation switch that performs an operation different from that of the shuttle lever 21. This operation switch includes a first operation switch 27 and a second operation switch 28. The first operation switch 27 and the second operation switch 28 are provided on the upper surface of the shuttle lever cover 26. The first operation switch 27 and the second operation switch 28 are arranged in the swing direction (front-back direction) of the shuttle lever 21. In the case of the present embodiment, the first operation switch 27 is a wiper / washer switch. The second operation switch 28 is a hazard switch. However, the type of operation switch is not limited to this. As shown in FIG. 2, the operation switches (first operation switch 27, second operation switch 28) are arranged at positions separated from the rotation shaft 22 of the grip 31 of the shuttle lever 21.

Hereinafter, the configuration of the shuttle lever cover 26 will be described. In the following description, the directions related to the shuttle lever cover 26 (upper, lower, front, rear, left, right) are based on the orientation of the cover attached to the column cover 25 (see FIGS. 1 to 3). To do.
As shown in FIGS. 3, 7, 8 and the like, the shuttle lever cover 26 has an upper cover 51 and a lower cover 71.

First, the upper cover 51 will be described.
As shown in FIGS. 7 to 10, the upper cover 51 has an upper plate portion 51a, a front plate portion 51b, a rear plate portion 51c, a left plate portion 51d, and a right plate portion 51e. The upper cover 51 is a substantially rectangular parallelepiped housing, and the lower portion is open. The upper cover 51 is integrally molded with, for example, a synthetic resin.

The upper plate portion 51a constitutes the upper surface of the upper cover 51. The upper plate portion 51a has a first upper surface portion 511a, a second upper surface portion 512a, and a third upper surface portion 513a.
The first upper surface portion 511a is provided from the left portion to the right portion of the upper plate portion 51a. The second upper surface portion 512a is provided on the left rear portion of the upper plate portion 51a. The third upper surface portion 513a is provided at the right end portion of the upper plate portion 51a. The first upper surface portion 511a has a larger area than the second upper surface portion 512a and the third upper surface portion 513a, and occupies most of the upper surface area of the upper plate portion 51a.

The first upper surface portion 511a is located above the first upper surface portion 511a and the second upper surface portion 512a, and constitutes the uppermost surface of the upper plate portion 51a. The first upper surface portion 511a is provided with two openings 33 and 34. One opening 33 is an opening through which the lever body 30 of the shuttle lever 21 is inserted (hereinafter, referred to as “lever opening 33”). The lever opening 33 is provided at a substantially intermediate position in the longitudinal direction of the shuttle lever cover 26 (hereinafter, referred to as “cover longitudinal direction”).

The longitudinal direction of the cover is a direction along the straight line L1 in FIG. 2, and is indicated by an arrow A3 in FIG. The straight line L1 is a straight line connecting the axis O of the rotating shaft 22 and the intermediate position in the front-rear direction of the left end surface 26a of the shuttle lever cover 26. The longitudinal direction of the cover is also the direction in which the lever body 30 extends when the shuttle lever 21 is in the neutral position in a plan view.
The lever opening 33 is formed as a substantially elliptical elongated hole extending in the front-rear direction, and allows the shuttle lever 21 to swing in the front-rear direction. As shown in FIG. 2, the lever opening 33 is provided closer to the rotation shaft 22 than the first operation switch 27 and the second operation switch 28.

The other opening 34 is an opening (hereinafter, referred to as "first opening 34") to which the first operation switch 27 is mounted. As shown in FIG. 9, the first opening 34 is a rectangular hole provided in the left front portion of the shuttle lever cover 26.
7 and 9. As shown in FIG. 11, a recess 52 (hereinafter, referred to as “first recess 52”) is provided around the first opening 34. The first recess 52 is recessed below the first upper surface portion 511a (hereinafter, may be referred to as “reference surface 511a”), which is the surface on which the lever opening 33 is provided. The shape of the first recess 52 is an annular shape (specifically, a square annular shape) in a plan view. The first recess 52 constitutes a support surface that supports the first operation switch 27 from below in a state where the first operation switch 27 is mounted on the first opening 34. As shown in FIG. 11, the first operation switch 27 is mounted on the first opening 34 in a state of being inserted through the first opening 34 (a state of extending from the lower side to the upper side of the first opening 34). To.

As shown in FIGS. 9 and 10, a plurality of ridges 53 are provided on the first upper surface portion 511a. The ridge 53 projects upward from the reference surface 511a. The plurality of ridges 53 are arranged side by side at intervals in the longitudinal direction of the shuttle lever cover 26. The plurality of ridges 53 are arranged parallel to each other and extend in the front-rear direction. The ridge 53 is arranged between the lever opening 33 and the operation switch (first operation switch 27, second operation switch 28) in the longitudinal direction of the cover (direction of arrow A3). The ridge 53 functions as a reinforcing rib that improves the strength of the upper cover 51.

As shown in FIG. 10, a first fixing portion 54 is provided on the back surface of the first upper surface portion 511a (the lower surface of the upper plate portion 51a). The first fixing portion 54 is a portion for fixing the connecting member 80, which will be described later, and projects downward from the back surface of the first upper surface portion 511a in a cylindrical shape. Two first fixing portions 54 are provided side by side in the front-rear direction, and bolts (bis) B1 for fixing the connecting member 80 are screwed into the two first fixing portions 54, respectively (see FIG. 16). ). The first fixing portion 54 is reinforced by the ridge 53 by being provided below (the back side) of the ridge 53.

As shown in FIG. 9, the second upper surface portion 512a is provided on the left rear portion of the upper plate portion 51a. As shown in FIGS. 7, 11, and 12, the second upper surface portion 512a is recessed below the first upper surface portion (reference surface) 511a. Hereinafter, the second upper surface portion 512a may be referred to as a “second concave portion 512a”. As shown in FIG. 11, the second upper surface portion (second concave portion) 512a is recessed below the first concave portion 52.

As shown in FIGS. 9 to 12, the front portion of the second upper surface portion 512a is connected to the first upper surface portion 511a by a first standing wall 56 that rises upward from the front portion. The right portion of the second upper surface portion 512a is connected to the first upper surface portion 511a by an inclined wall 57. The right portion of the first upright wall 56 is connected to the front portion of the inclined wall 57. As shown in FIG. 9, the inclined wall 57 gradually widens from the front portion to the rear portion. Specifically, the boundary line (ridge line) L3 between the right portion of the inclined wall 57 and the first upper surface portion 511a is to the right (direction approaching the rotation axis 22) from the front to the rear.
Has moved to.

As shown in FIGS. 7, 9, and 11, the second upper surface portion 512a is provided with an opening 35 (hereinafter, referred to as “second opening 35”). The second opening 35 is a rectangular hole having a smaller area than the first opening 34. The second opening 35 is arranged side by side with the first opening 34 in the front-rear direction. The length L5 of the second opening 35 in the longitudinal direction of the cover is shorter than the length L4 of the first opening 34 in the longitudinal direction of the cover. The right edge of the second opening 35 is located to the left of the right edge of the first opening 34. As shown in FIGS. 10 and 11, a second operation switch 28 is attached to the second opening 35. The second recess 512a is located around the second operation switch 28. The second operation switch 28 is attached to the second opening 35 in a state of being inserted through the second opening 35 (a state of penetrating the second opening 35 in the vertical direction).

As shown in FIGS. 10 to 12, when the second operation switch 28 is attached to the second opening 35, the height of the upper surface of the second operation switch 28 is 511a or less of the first upper surface portion (reference surface). It becomes the height. More specifically, the height of the upper surface of the second operation switch 28 is lower than the reference surface 511a. Further, the height of the upper surface of the second operation switch 28 is lower than the height of the upper surface of the first operation switch 27.

As shown in FIG. 3, the shuttle lever 21 is more than a straight line (virtual line) L6 connecting the outer end portion of the grip portion 19a of the steering handle 19 and the outer end portion of the second recess 512a of the shuttle lever cover 26. It is located inward (the side closer to the rotating shaft 22). The outer end of the grip portion 19a and the outer end of the second recess 512a are ends in the protruding direction of the shuttle lever cover 26 (direction away from the rotation shaft 22 along the line L1 in FIG. 2). By arranging the shuttle lever 21 in this way, the shuttle lever 21 is set unless the driver intentionally puts a finger (arm) in the area (space) S2 formed by the steering handle 19 and the shuttle lever cover 26. I can't touch. Therefore, even if the driver unintentionally touches the steering handle 19 or the shuttle lever cover 26 when boarding or disembarking, contact with the shuttle lever 21 is prevented, and the setting position of the shuttle lever 21 is changed. Will not be done.

In the present embodiment, two operation switches 27 and 28 are attached to the shuttle lever cover 26, but only one operation switch (first operation switch 27 or second operation switch 28) is attached to the shuttle lever cover 26. You may adopt the structure which attaches to. Further, it is also possible to adopt a configuration in which three or more operation switches are attached to the shuttle lever cover 26. When adopting a configuration in which three or more operation switches are attached to the shuttle lever cover 26, for example, two or more recesses having different heights are provided in the upper plate portion 51a, and one operation switch is attached to other than the recess. However, by mounting the remaining operation switches in different recesses, the height of the upper surface of each operation switch can be made different.

As shown in FIG. 9, the third upper surface portion 513a is provided at the right end portion of the upper plate portion 51a. The third upper surface portion 513a is provided from the front end to the rear end of the upper plate portion 51a. As shown in FIGS. 7 and 10, the third upper surface portion 513a is recessed below the first upper surface portion 511a. The height of the third upper surface portion 513a is equal to or higher than the height of the second upper surface portion 512a. The left portion of the third upper surface portion 513a is connected to the right portion of the first upper surface portion 511a by a second standing wall 58 that stands up from the left portion. The second upright wall 58 is provided from the front end to the rear end of the upper plate portion 51a, and is curved in an arc shape that bulges toward the left (direction away from the rotation shaft 22). The rear end portion (end portion in the arrow A2 direction) of the third upper surface portion 513a is located in front of the rear end portion of the first upper surface portion 511a.

As shown in FIGS. 7, 9, and 12, the front plate portion 51b constitutes the front surface of the upper cover 51. The front plate portion 51b extends downward from the front end portion of the upper plate portion 51a. The front plate portion 51b has a first curved surface 51b1 and a second curved surface 51b2. The first curved surface 51b1 and the second curved surface 51b2 are located on the right side of the front plate portion 51b. The first curved surface 51b1 is curved so as to move forward (in the direction of arrow A1) as it extends to the right (direction of arrow D1). The second curved surface 51b2 is continuous with the right end portion of the first curved surface 51b1 and is curved so as to move rearward (in the direction of arrow A2) as it extends to the right.

As shown in FIGS. 8, 9, and 12, the rear plate portion 51c constitutes the rear surface of the upper cover 51. The rear plate portion 51c extends downward from the rear end portion of the upper plate portion 51a. The rear plate portion 51c has a third curved surface 51c1. The third curved surface 51c1 is located on the right side of the rear plate portion 51c, and is curved so as to move forward as it extends to the right.
As shown in FIGS. 8 to 10 and 12, the left plate portion 51d constitutes the left surface of the upper cover 51. The left plate portion 51d extends downward from the left end portion of the upper plate portion 51a. The front end portion of the left plate portion 51d is connected to the left end portion of the front plate portion 51b. The rear end portion of the left plate portion 51d is connected to the left end portion of the rear plate portion 51c. The upper end of the front portion of the left plate portion 51d is connected to the first upper surface portion 511a, and the upper end of the rear portion of the left plate portion 51d is connected to the second upper surface portion 512a.

As shown in FIGS. 8 to 10, the right plate portion 51e constitutes the right surface of the upper cover 51. The right plate portion 51e extends downward from the right end portion of the upper plate portion 51a. The upper end of the right plate portion 51e is connected to the right end portion of the third upper surface portion 513a.
As shown in FIGS. 7 to 10, 13, and 16, the upper cover 51 includes a take-out portion 59 (hereinafter referred to as “first take-out portion 59”), a guide portion 60, a holding portion 61, and an upper engaging portion 62. have.

As shown in FIG. 7, the first take-out portion 59 is provided at a position closer to the rear (in the direction of arrow A2) of the right plate portion 51e. The first take-out portion 59 is formed by cutting out the right plate portion 51e from the lower end portion upward. As shown in FIG. 13, the first take-out unit 59 is a part for taking out the cable (second cable) 42 connected to the detection switch 66, which will be described later, from the inside of the shuttle lever cover 26 to the outside.

As shown in FIG. 7, the guide portion 60 is provided in front of the first take-out portion 59 (in the direction of arrow A1). As shown in FIGS. 13 and 15, the guide portion 60 is a portion that guides the cable 42 taken out from the first take-out portion 59 along the outer surface of the shuttle lever cover 26. As shown in FIGS. 7, 9, and 13, the guide portion 60 has a protruding portion 60a and an extension portion 60b. The protruding portion 60a protrudes to the right (in the direction of arrow D1) from the right plate portion 51e. The upper extension portion 60b extends upward from the right end of the protrusion 60a. The upper extension portion 60b is a plate-shaped portion extending in the front-rear direction, and faces the right plate portion 51e at a distance. The width W1 of the interval (see FIG. 9) is set to be equal to or larger than the outer diameter of the cable 42. The height (length extending upward) of the extension portion 60b is set to be equal to or larger than the outer diameter of the cable 42. As shown in FIG. 15, the cable 42 is arranged between the right plate portion 51e and the extension portion 60b in the front-rear direction along the outer surface of the shuttle lever cover 26 (the outer surface of the right plate portion 51e). Will be guided to.

As shown in FIGS. 7 and 9, the holding portion 61 is provided in front of the protruding portion 60a of the guide portion 60 and below the extending portion 60b. As shown in FIGS. 13 and 15, the holding portion 61 is a portion that holds the cable 42 guided by the guide portion 60. The holding portion 61 is formed in a cylindrical shape with an open front portion. The holding portion 61 is arranged so that the central axis of the cylinder faces in the vertical direction, and the cable 42 can be held along the vertical direction. That is, the holding portion 61 changes the direction of the cable 42 guided in the front-rear direction by the guide portion 60 and holds the cable 42 in the vertical direction.

As shown in FIGS. 7 and 13, the upper engaging portion 62 is a portion that is engaged with the lower engaging portion 78 of the lower cover 71, which will be described later. As shown in FIGS. 7 to 9 and 13, the upper engaging portion 62 includes a first engaging portion 621 (hereinafter, referred to as “first upper engaging portion 621”) and a second engaging portion 622 (hereinafter, referred to as “first upper engaging portion 621”). "Second upper engaging portion 622") is included. The first upper engaging portion 621 is provided at the rear portion of the right plate portion 51e. The second upper engaging portion 622 is provided on the front portion of the right plate portion 51e.

The first upper engaging portion 621 is provided on the proximal end side (rear) of the guide portion 60 in the guide direction of the cable 42. The second upper engaging portion 622 is provided on the tip side (front) of the guide portion 60 in the guide direction of the cable 42. Specifically, the first upper engaging portion 621 is provided behind the guide portion 60 and the holding portion 61. The second upper engaging portion 622 is provided in front of the guide portion 60 and the holding portion 61.

As shown in FIG. 9, the upper engaging portion 62 (first upper engaging portion 621, second upper engaging portion 622) is configured in a rectangular frame shape in a plan view, and has a rectangular engaging portion. Forming a hole. In other words, the upper engaging portion 62 has an engaging hole. As shown in FIG. 9, the first upper engaging portion 621 and the second upper engaging portion 622 are arranged at positions shifted in the cover longitudinal direction (arrow A3 direction). Specifically, the second upper engaging portion 622 is provided at a position (left position) away from the rotation shaft 22 than the first upper engaging portion 621. Further, the second upper engaging portion 622 is arranged to the left of the extension portion 60b and the holding portion 61 of the guide portion 60.

As shown in FIGS. 7 to 9, a second fixing portion 55 is provided between the first upper engaging portion 621 and the second upper engaging portion 622. Specifically, the second fixing portion 55 is provided adjacent to the front of the first upper engaging portion 621. The second fixing portion 55 is a portion for fixing the connecting member 80, which will be described later, and is formed in a cylindrical shape having a central hole 55a opened downward. A bolt (screw) B2 for fixing the connecting member 80 is screwed into the second fixing portion 55 (see FIG. 16). The connecting member 80 is fixed to the upper cover 51 by the bolt B1 screwed into the first fixing portion 54 and the bolt B2 screwed into the second fixing portion 55.

As shown in FIGS. 11 and 16, an upper fitting portion 51f formed to be thin is provided on the lower edge of the upper cover 51. The upper fitting portion 51f is continuously formed over the lower edge of the front plate portion 51b, the lower edge of the rear plate portion 51c, the lower edge of the left plate portion 51d, and the lower edge of the right plate portion 51e. The upper fitting portion 51f is fitted with the lower fitting portion 71f of the lower cover 71, which will be described later.
Next, the lower cover 71 will be described.

As shown in FIGS. 7, 8, 12, and 14, the lower cover 71 has a lower plate portion 71a, a front plate portion 71b, a rear plate portion 71c, a left plate portion 71d, and a right plate portion 71e. .. The lower cover 71 is a substantially rectangular parallelepiped housing, and the upper portion is open. The lower cover 71 is integrally molded with, for example, a synthetic resin.
The lower plate portion 71a constitutes the lower surface of the lower cover 71. As shown in FIGS. 7, 8 and 10, the lower plate portion 71a has a recessed portion 72. The recessed portion 72 rises upward in a dome shape and is recessed with respect to the lower surface of the lower plate portion 71a. The recessed portion 72 has a function of improving the strength of the lower cover 71. A through hole 73 is formed in the center of the recessed portion 72. A push rivet 40 is inserted through the through hole 73. The push rivet 40 connects the connecting member 80 and the lower cover 71.

As shown in FIGS. 7 and 10, a protective wall 74 is provided in the recessed portion 72. The protective wall 74 stands upward from the upper surface of the recessed portion 72. The protective wall 74 is formed in an arc shape centered on the through hole 73 in a plan view, and extends from the left side of the through hole 73 toward the front. As shown in FIGS. 10 and 16, the protective wall 74 prevents the cables (third cable 43, fourth cable 44) described later from coming into contact with the connecting member 80 (extended portion 81), and the cable 43, Prevents 44 from being damaged. Although FIG. 16 is a view of the upper cover 51 viewed from below, the position of the protective wall 74 when the lower cover 71 is combined is shown by a virtual line.

As shown in FIGS. 7, 8, 11, and 12, the front plate portion 71b constitutes the front surface of the lower cover 71. The front plate portion 71b extends upward from the front end portion of the lower plate portion 71a. The front plate portion 71b has a fourth curved surface 71b1 and a fifth curved surface 71b2. The curved shape of the fourth curved surface 71b1 corresponds to the curved shape of the first curved surface 51b1 of the upper cover 51. The fifth curved surface 71b2 is continuous with the right end portion of the fourth curved surface 71b1 and is curved so as to move rearward as it extends to the right. The fourth curved surface 71b1 is located on the right side of the front plate portion 71b, and is curved so as to move forward as it extends to the right. The curved shape of the fifth curved surface 71b2 corresponds to the curved shape of the second curved surface 51b2 of the upper cover 51.

As shown in FIGS. 7, 8 and 12, the rear plate portion 71c constitutes the rear surface of the lower cover 71. The rear plate portion 71c extends upward from the rear end portion of the lower plate portion 71a. The rear plate portion 71c has a sixth curved surface 71c1. The curved shape of the sixth curved surface 71c1 corresponds to the curved shape of the third curved surface 51c1 of the upper cover 51. The sixth curved surface 71c1 is located on the right side of the rear plate portion 71c, and is curved so as to move forward as it extends to the right.

As shown in FIGS. 7, 8 and 14, the left plate portion 71d constitutes the left surface of the lower cover 71. The left plate portion 71d extends upward from the left end portion of the lower plate portion 71a. The front end portion of the left plate portion 71d is connected to the left end portion of the front plate portion 71b. The rear end portion of the left plate portion 71d is connected to the left end portion of the rear plate portion 71c.
As shown in FIGS. 7, 8 and 14, the right plate portion 71e constitutes the right surface of the lower cover 71. The right plate portion 71e extends upward from the right end portion of the lower plate portion 71a. The right plate portion 71e is provided with a second take-out portion 77 and a lower engaging portion 78, which will be described later.

As shown in FIG. 7, the lower cover 71 has a first rib 75 and a second rib 76. The first rib 75 is provided on the left side of the lower cover 71. The second rib 76 is provided on the right side of the lower cover 71. The first rib 75 and the second rib 76 have a function of reinforcing the lower cover 71.
The first rib 75 includes a front rib 75a and a rear rib 75b. The front rib 75a extends from the inner surface (rear surface) of the front plate portion 71b toward the inner surface (upper surface) of the lower plate portion 71a. The rear rib 75b extends from the inner surface (front surface) of the rear plate portion 71c toward the inner surface (upper surface) of the lower plate portion 71a. The rear end of the front rib 75a is connected to the recess 72 and the protective wall 74. The rear rib 75b is connected to the recess, but not to the protective wall 74.

The second rib 76 extends from the inner surface (rear surface) of the front plate portion 71b toward the inner surface (upper surface) of the lower plate portion 71a, and further extends from the inner surface (upper surface) of the lower plate portion 71a to the inner surface (front surface) of the rear plate portion 71c. Extends to. The second rib 76 is formed in a substantially U shape as a whole. The second rib 76 is provided near the right plate portion 71e and at a position separated from the right plate portion 71e to the left (in the direction of arrow D2).

As shown in FIGS. 7 and 8, the lower cover 71 has a take-out portion 77 (hereinafter, “second take-out portion 77””.
The second take-out portion 77 is formed by cutting out the right plate portion 71e downward from the upper end portion in a concave shape. Specifically, the second take-out portion 77 includes a first vertical plate 77a extending upward from the right rear portion of the lower plate portion 71a, a second vertical plate 77b extending upward from the right front portion of the lower plate portion 71a, and a first vertical plate. It is a portion surrounded by a horizontal plate 77c that connects the lower portion of 77a and the lower portion of the second vertical plate 77b and extends in the front-rear direction. As shown in FIG. 13, the second take-out portion 77 is a portion for taking out the connecting member 80 and the like from the inside of the shuttle lever cover 26 to the outside.

As shown in FIGS. 7, 13, and 14, the lower cover 71 has a lower engaging portion 78.
As shown in FIGS. 7 and 13, the lower engaging portion 78 is a portion that is engaged with the upper engaging portion 62 of the upper cover 51. The lower engaging portion 78 includes a first engaging portion 781 (hereinafter, referred to as “first lower engaging portion 781”) and a second engaging portion 782 (hereinafter, referred to as “second lower engaging portion 782”). Including. The first lower engaging portion 781 is provided at the rear portion of the right plate portion 71e. The second lower engaging portion 782 is provided at the front portion of the right plate portion 71e. The first lower engaging portion 781 is provided at a position (engageable position) corresponding to the first upper engaging portion 621. The second lower engaging portion 782 is provided at a position (engageable position) corresponding to the second upper engaging portion 622.

As shown in FIGS. 14 and 15, the first lower engaging portion 781 and the second lower engaging portion 782 are arranged at positions shifted in the longitudinal direction of the cover. Specifically, the second lower engaging portion 782 is provided at a position to the left of the first lower engaging portion 781 (a position away from the rotation shaft 22). The second lower engaging portion 782 is arranged to the left of the extension portion 60b and the holding portion 61 of the guide portion 60.

The first lower engaging portion 781 is provided at the upper end of the first vertical plate 77a. The second lower engaging portion 782 is provided at the upper end of the second vertical plate 77b. The first lower engaging portion 781 and the second lower engaging portion 782 are formed in a claw shape. Specifically, as shown in FIG. 14, the first lower engaging portion 781 and the second lower engaging portion 782 have a lower inclined surface 78a, an intermediate surface 78b, and an upper inclined surface 78c, respectively. The lower inclined surface 78a is continuous with the upper end portion of the first vertical plate 77a or the second vertical plate 77b, and shifts to the right (direction away from the right plate portion 71e) from the lower side to the upper side. The intermediate surface 78b extends upward from the upper end portion of the downward inclined surface 78c. The upper inclined surface 78c is continuous with the upper end portion of the intermediate surface 78b, and shifts to the left (direction approaching the right plate portion 71e) from the lower side to the upper side. The lower inclined surface 78a and the intermediate surface 78b, and the upper inclined surface 78c and the intermediate surface 78b are smoothly continuous with each other via a curved surface (R). The angle of the internal angle formed by the lower inclined surface 78a and the intermediate surface 78b is smaller than the angle of the internal angle formed by the upper inclined surface 78c and the intermediate surface 78b.

As shown in FIG. 7, the first lower engaging portion 781 is inserted from below into the engaging hole constituting the first upper engaging portion 621 and engaged. The second lower engaging portion 782 is inserted from below into the engaging hole constituting the second upper engaging portion 622 and engaged.
As described above, in the case of the present embodiment, the lower engaging portion (first lower engaging portion 781, second lower engaging portion 782) is the upper engaging portion 62 (first upper engaging portion 621, second). It has an engaging claw that is engaged with the engaging hole that constitutes the upper engaging portion 622). In other words, the upper engaging portion 62 has an engaging hole and the lower engaging portion 78 has an engaging claw, while the upper engaging portion 62 has an engaging claw and the lower engaging portion 78 engages. It may have a hole. That is, one of the upper engaging portion 62 and the lower engaging portion 78 may have an engaging hole, and one of them may have an engaging claw. Further, the upper engaging portion 62 and the lower engaging portion 78 may be engaged in a form different from that of the engaging claw and the engaging hole (for example, the engaging claw and the engaging groove).

As shown in FIGS. 7 and 14, a thinly formed lower fitting portion 71f is provided on the upper edge of the lower cover 71. The lower fitting portion 71f is continuously formed over the upper edge of the front plate portion 71b, the upper edge of the rear plate portion 71c, the upper edge of the left plate portion 71d, and the upper edge of the right plate portion 71e. The upper cover 51 and the lower cover 71 are combined by fitting the upper fitting portion 51f to the outside of the lower fitting portion 71f.

In assembling (integrating) the upper cover 51 and the lower cover 71, the lower engaging portion 78 and the upper engaging portion 62 are assembled in a state where the connecting member 80 is fixed to the first fixing portion 54 and the second fixing portion 55. The upper fitting portion 51f is engaged with the lower fitting portion 71f, and then the push rivet 40 is inserted into the through hole 73 of the recessed portion 72 and attached to the connecting member 80. Here, the upper fitting portion 51f is fitted to the lower fitting portion 71f before the push rivet 40 is attached, so that the lower fitting portion 71f is fitted to the engaging hole constituting the upper fitting portion 51f. The work of inserting the engaging claws constituting the above from below can be easily performed. Therefore, the load (stress) applied to the engaging claw and the engaging hole can be reduced. Further, by attaching the push rivet 40 in a state where the upper fitting portion 51f and the lower fitting portion 71f are fitted together, the upper cover 51 and the lower cover 71 can be securely fixed.

To separate the upper cover 51 and the lower cover 71, after removing the push rivet 40, the upper fitting portion 51f is released from the lower fitting portion 71f, and the lower engaging portion 78 and the upper engaging portion 62 are separated. This can be done by disengaging the engagement with.
As shown in FIGS. 10 and 16, one side (left portion) of the connecting member 80 is arranged inside the shuttle lever cover 26. The connecting member 80 is a strip-shaped plate extending in the longitudinal direction of the case, with the front surface facing upward and the back surface facing downward. As shown in FIG. 13, the other side (right portion) of the connecting member 80 projects to the outside of the shuttle lever cover 26 through the second take-out portion 77 of the lower cover 71. That is, one side (left portion) of the connecting member 80 is arranged inside the shuttle lever cover 26, and the other side (right portion) is arranged outside the shuttle lever cover 26. Hereinafter, in the description of the connecting member 80, the portion arranged inside the shuttle lever cover 26 may be referred to as an “inner portion”, and the portion arranged outside the shuttle lever cover 26 may be referred to as an “outer portion”.

As shown in FIG. 16, one side (left portion), which is an inner portion of the connecting member 80, is fixed to the first fixing portion 54 of the upper cover 51 by the bolt B1 and to the second fixing portion 55 by the bolt B2. On the other hand, it is fixed. On one side of the connecting member 80, an extension 81 extending to the left and downward is provided. The extending portion 81 is in contact with the upper surface of the recessed portion 72 of the lower cover 71, and is fixed to the recessed portion 72 by the push rivet 40. As a result, the inner portion of the connecting member 80 is fixed (fastened) to the upper cover 51 and the lower cover 71. The use of the push rivet 40 is preferable in that it can be easily attached and detached, but another fixture (for example, a screw or the like) may be used instead of the push rivet 40.

As shown in FIGS. 6, 10 and 17, a through hole 82 is formed in the inner portion of the connecting member 80 on the right side (closer to the rotation shaft 22) of the extending portion 81. The input shaft 38a of the position detection sensor 38 is inserted through the through hole 82. A mounting plate 65 is arranged above the connecting member 80. As shown in FIG. 10, the mounting plate 65 is arranged below the upper plate portion 51a of the upper cover 51. As shown in FIGS. 5 and 10, a detection switch 66 as a position detection device is mounted on the lower surface of the mounting plate 65. The detection switch 66 detects whether or not the shuttle lever 21 is in the neutral position. As shown in FIG. 18, the contact member 66a of the detection switch 66 fits into the groove 85a formed on the outer peripheral surface of the cam 85 when the shuttle lever 21 is in the neutral position. At this time, the detection switch 66 is in the first state (for example, the on state) in which it is detected that the shuttle lever 21 is in the neutral position. The cam 85 is attached to the upper part of the shaft support member 37, and rotates around the axial center in the vertical direction together with the shaft support member 37 as the shuttle lever 21 swings forward or backward. The groove 85a moves forward or backward as the cam 85 rotates. The contact member 66a disengages from the groove 85a when the shuttle lever 21 swings from the neutral position to the forward position or the rear position. As a result, the detection switch 66 is in the second state (for example, the off state) in which it does not detect that the shuttle lever 21 is in the neutral position.

As shown in FIGS. 5 and 10, the detection switch 66 has a cable 42 (hereinafter, “No. 1”) that transmits an output signal from the detection switch 66 (a signal indicating whether or not the shuttle lever 21 is in the neutral position). One end side of (2 cable 42) is connected. As shown in FIGS. 13 and 15, the other end side of the second cable 42 is taken out from the first take-out portion 59 of the upper cover 51, and then guided by the guide portion 60 and held by the holding portion 61. The first connector 47 is connected to the other end of the second cable 42. A second connector 48 is connected to the first connector 47. Another cable 46 is connected to the second connector 48. The output signal from the detection switch 66 is transmitted to the forward / backward switching mechanism 7 via the second cable 42, the first connector 47, the second connector 48, and the other cable 46.

In the forward / backward switching mechanism 7, even when the position detection sensor 38 detects that the shuttle lever 21 is in the forward position or the reverse position, the detection switch 66 detects that the shuttle lever 21 is in the neutral position. At that time, the switch to the state of outputting the forward power or the reverse power is not performed. As a result, even though the shuttle lever 21 is in the neutral position, it is possible to prevent the tractor 1 from moving forward or backward due to a malfunction such as a failure of the position detection sensor 38.

As shown in FIGS. 5, 16 and 18, a cable support member 89 for supporting the cable is attached to the inner portion of the connection member 80. The cable support member 89 supports the cables 43 and 44 below the connecting member 80 inside the shuttle lever cover 26. Specifically, the cable support member 89 transmits the signal output from the first operation switch 27 to the cable 43 (hereinafter referred to as “third cable 43”) that transmits the signal output from the first operation switch 27. It supports the cable 44 (hereinafter referred to as "fourth cable 44") and guides it from the left side to the right side (toward the rotation shaft 22 side).

As shown in FIGS. 19 and 20, the case 90 is attached to the outer upper surface of the connecting member 80 by a bolt (screw) B5. An operating lever 70 is attached to the upper part of the case 90 so as to swing forward or backward around the axis in the vertical direction. The connecting member 80 connects the operation lever 70 and the shuttle lever cover 26 via the case 90. The connecting member 80 is arranged from the inside of the shuttle lever cover 26 to the inside of the column cover 25, and connects the operation lever 70 and the shuttle lever cover 26.

The operation lever 70 is a lever that performs an operation different from that of the shuttle lever 21 and the operation switch (first operation switch 27, second operation switch 28). In the case of the present embodiment, the operation lever 70 is a lever for switching on / off of the blinker and the headlight (both not shown) provided on the vehicle body 2. However, the operating lever 70 is not limited to this.
A switch device (not shown) and the like are housed inside the case 90. The switch device outputs a signal based on the operation of the operation lever 70 via the cable 45 (hereinafter, referred to as “fifth cable 45”). The switch device outputs an operation signal to the winker or the headlight based on the operation of the operation lever 70, and the winker or the headlight is switched on / off (turning on and off) based on the signal.

As shown in FIGS. 1 and 2, the operation lever 70 is provided so as to project to the right (one side) from the column cover 25. Since the shuttle lever cover 26 is provided so as to project to the left (other side) from the column cover 25, the operation lever 70 is provided so as to project from the column cover 25 to the opposite side to the shuttle lever cover 26. .. The shuttle lever cover 26 is provided at a position where it does not overlap with the meter panel 29 when viewed from the axial direction of the rotating shaft 22. Specifically, the shuttle lever cover 26 is located on a straight line (virtual line) L2 in which the other side end surface (left end surface) 26a extends along the projecting direction of the operation lever 70. The left end surface 26a of the shuttle lever cover 26 is a surface composed of the left plate portion 51d of the upper cover 51 and the left plate portion 71d of the lower cover 71. The protruding direction of the operating lever 70 is the protruding direction when the operating lever 70 is in the neutral position. The straight line L2 passes through the axis O of the rotating shaft 22. The angle α formed by the straight line L2 and the straight line L1 along the longitudinal direction of the shuttle lever cover 26 is set, for example, in the range of −10 ° to + 10 °.

As shown in FIGS. 13 and 15, a through hole 83 is formed in the outer portion of the connecting member 80. The rotating shaft 22 and the steering column 24 are inserted into the through hole 83. A connecting plate 84 is fixed to the lower surface of the connecting member 80. The connection plate 84 extends downward from the right side and the left side of the through hole 83, respectively. As shown in FIG. 20, the connecting plate 84 is connected to the receiving plate 67 fixed to the outer peripheral surface of the steering column 24 by bolts B6. The receiving plate 67 is fixed to the column cover 25 by bolts B7.

As shown in FIGS. 19 and 20, when the shuttle lever cover 26 is attached to the column cover 25, the outer peripheral surface of the column cover 25 is close to the second upright wall 58 of the shuttle lever cover 26 and is second. It is arranged along the upright wall 58. The outer peripheral surface of the column cover 25 is located on the left side (the side away from the rotation shaft 22) of the third upper surface portion 513a of the shuttle lever cover 26. Further, the upper engaging portion 62 and the lower engaging portion 78 of the shuttle lever cover 26 are provided on the rotation shaft 22 side of the shuttle lever cover 26 and are arranged inside the column cover 25. As a result, the upper engaging portion 62 and the lower engaging portion 78 are protected by the column cover 25, and it is possible to prevent the driver or the like from coming into contact with each other and disengaging.

Further, the take-out part (first take-out part 59, second take-out part 77) and the holding part 61 of the shuttle lever cover 26 are also provided on the rotation shaft 22 side of the shuttle lever cover 26 and arranged inside the column cover 25. Will be done. As a result, the cable taken out from the take-out portions 58 and 77 and held by the holding portion 61 is protected by the column cover 25, and the cable is prevented from coming off due to contact with the driver or the like.

Although one embodiment of the present invention has been described above, it should be considered that the embodiments disclosed this time are exemplary in all respects and are not restrictive. The scope of the present invention is shown not by the above description but by the scope of claims, and it is intended that all modifications within the meaning and scope equivalent to the scope of claims are included.

1 Work vehicle 2 Body 19 Steering handle 21 Shuttle lever 22 Rotating shaft 25 Column cover 26 Shuttle lever cover 27 Operation switch (first operation switch)
28 Operation switch (2nd operation switch)
30 Lever body 31 Grip 33 Opening 42 Cable (second cable)
52 recess (first recess)
51 Top cover 511a Reference surface 512a Recess (second recess)
59 Extraction section (1st extraction section)
60 Guide portion 62 Upper engaging portion 621 First engaging portion (first upper engaging portion)
622 Second engaging part (second upper engaging part)
66 Position detection device 70 Operating lever 71 Lower cover 78 Lower engaging portion 781 First engaging portion (first lower engaging portion)
782 Second engaging part (second lower engaging part)
80 Connection member

Claims (13)

With the steering wheel
A shuttle lever having a lever body that can swing in a forward position, a neutral position, and a reverse position, and a grip provided on one end side of the lever body.
A column cover that covers the outer circumference of the rotating shaft of the steering handle and
A shuttle lever cover that is attached to the side of the column cover, has an opening through which the lever body is inserted, and accommodates the other end side of the lever body.
A work vehicle equipped with. The work vehicle according to claim 1, wherein the shuttle lever cover is provided with an operation switch that performs an operation different from that of the shuttle lever. The operation switch is arranged at a position away from the rotation axis with respect to the grip.
The work vehicle according to claim 2, wherein the cover for the shuttle lever has a recess recessed below a reference surface provided with the opening around the operation switch. The operation switch includes a first operation switch and a second operation switch arranged in the swing direction of the shuttle lever.
The work vehicle according to claim 3, wherein the recess includes a first recess provided around the first operation switch and a second recess provided around the second operation switch. The work vehicle according to claim 4, wherein the second recess is recessed below the first recess. The work vehicle according to claim 4 or 5, wherein the height of the upper surface of the second operation switch is equal to or lower than the reference surface. The shuttle lever cover includes a take-out part for taking out the cable from the inside of the shuttle lever cover to the outside, and a guide part for guiding the cable taken out from the take-out part along the outer surface of the shuttle lever cover. Have,
The work vehicle according to any one of claims 1 to 6, wherein the take-out portion and the guide portion are provided on the rotation shaft side of the shuttle lever cover and are arranged inside the column cover. A position detection device that is arranged inside the shuttle lever cover and outputs a signal based on the swing position of the lever body is provided.
The work vehicle according to claim 7, wherein the cable includes a cable that transmits a signal output from the position detection device. The shuttle lever cover has an upper cover having an upper engaging portion and a lower cover having a lower engaging portion that engages with the upper engaging portion.
One of the upper engaging portion and the lower engaging portion has an engaging hole, and one of the upper engaging portion and the lower engaging portion is engaged with the engaging hole. Have claws
The item according to any one of claims 1 to 8, wherein the upper engaging portion and the lower engaging portion are provided on the rotation shaft side of the shuttle lever cover and are arranged inside the column cover. Work vehicle. The upper engaging portion and the lower engaging portion are a first engaging portion provided on the base end side of the cable in the guiding direction and a second engaging portion provided on the tip end side in the guiding direction, respectively. Including the engaging part,
The work vehicle according to claim 9, wherein the second engaging portion is provided at a position farther from the rotating shaft than the first engaging portion, according to claim 7. It is provided with an operation lever that protrudes to one side from the column cover and performs an operation different from that of the shuttle lever.
The shuttle lever cover is provided so as to project from the column cover to the other side, and the end surface on the other side is located on a virtual line extending along the projecting direction of the operation lever. The work vehicle according to any one of the above items. It is provided with an operation lever that protrudes to one side from the column cover and performs an operation different from that of the shuttle lever.
The work vehicle according to any one of claims 1 to 10, wherein the shuttle lever cover and the operation lever are integrated. The work vehicle according to claim 12, which is arranged from the inside of the shuttle lever cover to the inside of the column cover, and also includes a connecting member for connecting the operation lever and the shuttle lever cover.

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