JP6643955B2 - Work vehicle - Google Patents

Description

  The present invention relates to a pedal operation having a pedal arm supported to be swingable around a horizontal swing axis and extending in the front-rear direction, and a pedal plate attached to a swing end of the pedal arm and operated by stepping. The present invention relates to a work vehicle provided with tools.

  A conventional work vehicle is described in, for example, Patent Document 1. This work vehicle is provided with a stopper portion capable of restricting the swing angle of the pedal operating tool by contacting the lower surface of the pedal plate of the pedal operating tool ("accelerator pedal" in the literature).

JP 2010-143427 A

  However, in the above-mentioned conventional technology, when the pedal operation tool is depressed while receiving an unintended lateral external force, the pedal plate swings downward in a state of being shifted in the lateral direction, and the pedal plate is moved downward by the stopper portion. There is a possibility that the pedal operation tool may not be able to return to the initial position by getting under the upper end and being caught. Therefore, there is room for improvement so that such a state does not occur.

  In view of the above circumstances, it has been desired to provide a work vehicle that can improve the reliability of the operation of the pedal operation tool.

The working vehicle of the present invention
A pedal operation that includes a pedal arm that is swingably supported around a horizontal swing axis and extends in the front-rear direction, and a pedal plate that is attached to a swing end of the pedal arm and that is operated to be depressed. Utensils,
A stopper portion that can abut on the lower surface of the pedal plate and regulate the swing angle of the pedal operation tool;
A blocking portion that is located on a lateral side separated from the stopper portion and that prevents the pedal plate from swinging below an upper end portion of the stopper portion ,
The blocking portion is formed in a substantially rectangular shape in a plan view, and has a longitudinal direction arranged substantially parallel to a direction in which the pedal arm extends .

  According to the present invention, when the pedal operation tool is depressed while receiving an unintended external force in the lateral direction, even if the pedal plate swings downward in a state shifted in the lateral direction, the pedal plate moves to the lateral side separated from the stopper portion. The blocking portion provided prevents the pedal plate from swinging below the upper end of the stopper portion. Thus, it is possible to avoid a situation in which the pedal plate enters under the upper end of the stopper portion and is caught, and the pedal operation tool does not return to the initial position. Therefore, according to the present invention, the reliability of operation of the pedal operation tool can be improved.

The working vehicle of the present invention
A pedal operation that includes a pedal arm that is swingably supported around a horizontal swing axis and extends in the front-rear direction, and a pedal plate that is attached to a swing end of the pedal arm and that is operated to be depressed. Utensils,
A stopper portion that can abut on the lower surface of the pedal plate and regulate the swing angle of the pedal operation tool;
A blocking portion that is located on a lateral side separated from the stopper portion and that prevents the pedal plate from swinging below an upper end portion of the stopper portion,
In a state in which the lateral end of the pedal plate and the stopper overlap in the swing direction of the pedal plate, the lateral other end of the pedal plate and the blocking portion overlap in the swing direction of the pedal plate. those that are configured.

  According to this configuration, the pedal plate overlaps at least one of the stopper portion and the blocking portion in the swing direction of the pedal plate. For this reason, regardless of how the position of the pedal plate is displaced, it is possible to preferably prevent the pedal plate from entering below the upper end of the stopper and being caught.

In the present invention,
It is preferable that a lateral distance between an upper end portion of the stopper portion and the blocking portion is set to be equal to or less than a length equal to a lateral width of the pedal plate.

  According to this configuration, when the position of the pedal plate is shifted in the lateral direction, the pedal plate is often inclined, and the width occupied by the pedal plate in the inclined state in the lateral direction is equal to that of the pedal plate in the normal state. Becomes larger than the width. Therefore, by setting the width of the pedal plate to be equal to or less than the length of the lateral distance between the upper end portion of the stopper portion and the blocking portion, the pedal plate can be moved to the upper end portion of the stopper portion. Thus, it is possible to preferably avoid getting in and catching below.

In the present invention,
It is preferable that an upper end portion of the blocking portion is located closer to a lower surface of the pedal plate than an upper end portion of the stopper portion in a swing direction of the pedal operating tool.

  According to this configuration, in the normal case, the swinging of the pedal plate is restricted by contacting the upper end of the stopper portion. However, when the position of the pedal plate is shifted in the lateral direction, the stopper portion The swing of the pedal plate is restricted by contacting the upper end portion of the blocking portion which is closer. Therefore, the operator can recognize that a lateral external force is acting on the pedal operating tool due to a change in the stepping allowance of the pedal operating tool.

The working vehicle of the present invention
A pedal operation that includes a pedal arm that is swingably supported around a horizontal swing axis and extends in the front-rear direction, and a pedal plate that is attached to a swing end of the pedal arm and that is operated to be depressed. Utensils,
A stopper portion that can abut on the lower surface of the pedal plate to regulate the swing angle of the pedal operation tool;
A blocking portion that is located on a lateral side separated from the stopper portion and that prevents the pedal plate from swinging below an upper end portion of the stopper portion,
The blocking portion is one that is configured to regulate the bending of the operating cable being cooperative with the pedal operation device.

  According to this configuration, the blocking portion that prevents the pedal plate from swinging below the upper end of the stopper portion is also used as a regulating member that regulates bending of the operation cable connected to the pedal operation tool. Thus, the configuration can be simplified.

In the present invention,
It is preferable that the stopper portion is constituted by a stopper bolt having a screw shaft portion capable of adjusting an amount of protrusion to the pedal plate side and a head portion fixed to an upper end portion of the screw shaft portion.

  According to this configuration, by adjusting the height position of the head of the stopper bolt, the step allowance of the pedal operating tool can be easily changed. When the pedal plate enters under the head of such a stopper bolt, the pedal plate is likely to be caught on the head, but since the blocking portion is provided, it is possible to preferably avoid such a trapping of the pedal plate. .

The working vehicle of the present invention
A pedal operation that includes a pedal arm that is swingably supported around a horizontal swing axis and extends in the front-rear direction, and a pedal plate that is attached to a swing end of the pedal arm and that is operated to be depressed. Utensils,
A stopper portion that can abut on the lower surface of the pedal plate and regulate the swing angle of the pedal operation tool;
A blocking portion that is located on a lateral side separated from the stopper portion and that prevents the pedal plate from swinging below an upper end portion of the stopper portion,
The blocking portion, in which are located laterally outward from the pedal plate with respect to the right and left center of the steering wheel.

  According to this configuration, when the stepping operation is performed in a seated state, a force that is directed outward from the left and right centers of the body is likely to be generated. For this reason, by providing a blocking portion laterally outside the pedal plate with respect to the left and right center of the steering handle, which substantially coincides with the left and right center of the operator's body, it is possible to reduce the inconvenience caused by the lateral displacement of the pedal plate. Will be able to deal with it.

1 is an overall side view of a multipurpose vehicle. It is a top view showing the circumference of an operation part. It is a side view which shows the periphery of a pedal operation tool, a stopper part, a blocking part, etc., and shows a part in cross section. FIG. 4 is a rear view showing the periphery of a pedal operating tool, a stopper portion, a blocking portion, and the like, and partially showing a cross section. It is a schematic diagram which shows the periphery of a pedal operation tool, a stopper part, a blocking part, etc. in the swing direction of a pedal board.

Hereinafter, an embodiment which is an example of the present invention will be described with reference to the drawings.
The multipurpose vehicle (an example of a “working vehicle”) illustrated in FIG. 1 is configured as a vehicle that can be used for various purposes such as transporting loads and recreation. The multipurpose vehicle includes a pair of left and right front wheels 11 as drivable and steerable traveling devices, and a pair of left and right rear wheels 12 as drivable traveling devices. That is, the traveling body of the multipurpose vehicle is configured to be able to travel by the pair of left and right front wheels 11 and the pair of left and right rear wheels 12. A driving unit 13 is provided at the center of the traveling body to perform a driving operation while the operator is on board. A loading platform 14 capable of loading loads is provided at a rear portion of the traveling machine body. A driving unit 16 including a water-cooled gasoline engine (hereinafter abbreviated as "engine 15") and the like is provided below the loading platform 14 of the traveling body.

  As shown in FIGS. 1 and 2, the driving unit 13 is protected by being surrounded by a frame-shaped rope frame 17. The driving section 13 includes a driving seat 18 on which a driver sits and an auxiliary seat 19 on which a passenger sits. The driving unit 13 includes a steering handle 20 for steering the left and right front wheels 11, a shift lever 21 for shift operation, and an accelerator pedal 22 (an example of a “pedal operating tool”) capable of changing the running speed. And a brake pedal 23 and the like that can brake the traveling body.

  In addition, as shown in FIGS. 2 to 4, the driving unit 13 includes a plate-shaped panel member 24. The panel member 24 is provided with a foot panel portion 25 where the foot of the occupant is located, and a front panel portion 26 connected to the front end of the foot panel portion 25.

[About accelerator pedal]
As shown in FIGS. 3 to 5, the accelerator pedal 22 is swingably supported around a lateral swing shaft 27 (the swing axis X at the center of the swing shaft 27), and extends along the front-rear direction. An extended pedal arm 28 and a pedal plate 29 which is attached to the swinging end of the pedal arm 28 and operated by stepping are provided. The swing shaft 27 is fixedly supported by a support member of the traveling body. The swing shaft 27 is located above the foot panel 25. That is, the accelerator pedal 22 is a suspended pedal.

  As shown in FIGS. 3 to 5 and the like, the pedal arm 28 is a rod-shaped member. The pedal arm 28 has a shape that is bent substantially in an L shape in a side view. A pedal plate 29 is attached to a swing end on one end of the pedal arm 28, and one end of an operation cable 30 is attached to a swing end on the other end of the pedal arm 28. An intermediate portion of the pedal arm 28 is fixed to a cylindrical boss member 31 rotatably supported by the swing shaft 27.

  The other end of the operation cable 30 is connected to a control device (not shown) for controlling the rotation speed of the engine 15.

  As shown in FIG. 5 and the like, the pedal plate 29 is a rectangular plate. In the pedal board 29, the front-rear width D1 is longer than the lateral width D2.

  As shown in FIGS. 3 and 4, the accelerator pedal 22 is provided with an urging member 32 made of a spring material or the like for urging the accelerator pedal 22 to return to the initial position. The biasing member 32 is attached to the pedal arm 28.

  As shown in FIGS. 3 to 5, the front panel portion 26 includes a pedal lower portion 33 located below the pedal plate 29 in a normal state, a cable lower portion 34 located below the operation cable 30, and a front-rear direction. An extending stop 35 is provided. The height of the upper end is higher in the order of the pedal lower part 33, the cable lower part 34, and the blocking part 35. That is, the front panel portion 26 is formed in a step shape. The cable lower portion 34 is provided continuously outside the pedal lower portion 33. The blocking portion 35 is continuously provided on the lateral outer side of the cable lower portion 34 and protrudes upward.

[About the stopper]
As shown in FIGS. 3 to 5, the driving unit 13 is provided with a stopper portion 37 below the pedal plate 29, which can contact the lower surface 36 of the pedal plate 29 and regulate the swing angle of the accelerator pedal 22. ing. The stopper portion 37 is disposed so as to protrude upward through a through hole 38 provided in the pedal lower portion 33. The stopper portion 37 is constituted by a stopper bolt having a screw shaft portion 39 capable of adjusting an amount of protrusion of the pedal lower portion 33 toward the pedal plate 29 and a head portion 40 fixed to an upper end portion of the screw shaft portion 39. I have. The height position of the head 40 can be changed by operating the double nut 41 composed of two nuts attached to the screw shaft 39 to change the amount of protrusion of the screw shaft 39. Thereby, the step margin of the pedal plate 29 of the accelerator pedal 22 can be easily changed.

[About blocking part]
As shown in FIGS. 4, 5, and the like, the blocking portion 35 is located on the lateral side separated from the stopper portion 37, and prevents the pedal plate 29 from swinging below the upper end portion of the stopper portion 37. It has become. As described above, the blocking portion 35 is integrally formed as a part of the panel member 24.

  As shown in FIG. 2, the blocking portion 35 is located laterally outside the pedal plate 29 with respect to the left and right center C of the steering handle 20 operated by the operator sitting on the driver's seat 18. On the side closer to the left and right center C of the steering handle 20 than the pedal plate 29, there is no member that regulates the swing of the pedal plate 29. Therefore, a large foot space for the operator seated on the driver's seat 18 is ensured.

  As shown in FIG. 3 and the like, the upper end of the blocking portion 35 is located closer to the lower surface 36 of the pedal plate 29 than the upper end of the stopper 37 in the swing direction of the accelerator pedal 22.

  As shown in FIG. 5, the lateral distance D3 between the upper end of the stopper 37 and the blocking part 35 is set to the same length as the lateral width D2 of the pedal plate 29.

  As shown by a two-dot chain line in FIG. 5, when the pedal plate 29 of the accelerator pedal 22 is displaced in the lateral direction, the one end 42 of the pedal plate 29 and the head 40 of the stopper 37 are In the state where the pedal plate 29 overlaps in the swing direction, the other lateral end portion 43 of the pedal plate 29 and the blocking portion 35 are configured to overlap in the swing direction of the pedal plate 29. Therefore, the pedal plate 29 does not pass downward between the head portion 40 of the stopper portion 37 and the blocking portion 35.

  As can be understood from FIGS. 3 and 4, the blocking portion 35 is configured to restrict the outward bending of the operation cable 30 linked to the accelerator pedal 22. The operation cable 30 passes through an insertion hole 44 opened in the foot panel 25 and is guided from below the foot panel 25 toward a control device (not shown).

  Since such a blocking portion 35 is provided, the accelerator pedal 22 is prevented from being caught on the lower portion of the head portion 40 of the stopper bolt, and the operator can easily operate the accelerator pedal 22.

[Another embodiment]
Hereinafter, another embodiment of the present invention will be described. Each of the following embodiments may be combined and applied to the above embodiments as long as no inconsistency arises. The scope of the present invention is not limited to the contents of these embodiments.

(1) In the above embodiment, the accelerator pedal 22 is illustrated as an example of the “pedal operation tool”, but the invention is not limited to this. The “pedal operating tool” may be the brake pedal 23.

(2) In the above embodiment, the one in which the lateral distance D3 between the upper end portion of the stopper portion 37 and the blocking portion 35 is set to the same length as the lateral width D2 of the pedal plate 29 is exemplified. However, it is not limited to this. For example, the lateral distance D3 between the upper end of the stopper portion 37 and the blocking portion 35 may be set to a length shorter than the lateral width D2 of the pedal plate 29. That is, it is preferable that the lateral distance D3 between the upper end portion of the stopper portion 37 and the blocking portion 35 is set to be equal to or less than the length of the lateral width D2 of the pedal plate 29. Further, for example, the lateral distance between the upper end of the stopper portion 37 and the blocking portion 35 may be set to be longer than the lateral width D2 of the pedal plate 29.

(3) In the above embodiment, the upper end of the blocking portion 35 is located closer to the lower surface 36 of the pedal plate 29 than the upper end of the stopper portion 37 in the swing direction of the accelerator pedal 22. Although illustrated, it is not limited to this. For example, in the swing direction of the accelerator pedal 22, the upper end of the blocking portion 35 may be located at the same distance (same height) as the upper end of the stopper 37. Further, for example, the upper end of the blocking portion 35 may be located farther from the lower surface 36 of the pedal plate 29 than the upper end of the stopper 37 in the swing direction of the accelerator pedal 22.

(4) In the above-described embodiment, an example is described in which the blocking portion 35 is configured to restrict the bending of the operation cable 30 linked to the accelerator pedal 22, but the configuration is not limited thereto. For example, the blocking portion 35 may not have a function of restricting the bending of the operation cable 30 linked to the accelerator pedal 22.

(5) In the above embodiment, the stopper 37 is provided with a stopper bolt, but is not limited to this. Instead of this, for example, a projecting body or the like that does not have an adjusting function and protrudes from the floor panel may be employed as another stopper.

(6) In the above-described embodiment, an example is described in which the blocking portion 35 is arranged only laterally outside of the pedal plate 29 with respect to the left and right center C of the steering handle 20; however, the present invention is not limited to this. In addition to this blocking portion 35, another blocking portion 35 may be disposed closer to the left and right center C of the steering handle 20 than the pedal plate 29.

(7) In the above-described embodiment, the blocking part 35 is integrally formed as a part of the panel member 24, but is not limited thereto. For example, the blocking portion 35 may be separate from the panel member 24 and attached to the panel member 24. Further, the shape of the blocking portion 35 may be arbitrary.

  INDUSTRIAL APPLICABILITY The present invention can be used for various work vehicles such as tractors, mowers, combine harvesters, rice transplanters, and construction machines, in addition to multipurpose vehicles.

20: Steering handle 22: Accelerator pedal (pedal operating tool)
27: rocking shaft 28: pedal arm 29: pedal plate 30: operation cable 35: blocking part 36: lower surface 37: stopper part 39: screw shaft part 40: head C: left and right center D2: lateral width D3: distance

Claims (7)

A pedal operation that includes a pedal arm that is swingably supported around a horizontal swing axis and extends in the front-rear direction, and a pedal plate that is attached to the swing end of the pedal arm and that is operated to be depressed. Utensils,
A stopper portion that can abut on the lower surface of the pedal plate and regulate the swing angle of the pedal operation tool;
A blocking portion that is located on a lateral side separated from the stopper portion and that prevents the pedal plate from swinging below an upper end portion of the stopper portion ,
The work vehicle , wherein the blocking portion is formed in a substantially rectangular shape in a plan view, and a longitudinal direction is disposed substantially parallel to a direction in which the pedal arm extends . A pedal operation that includes a pedal arm that is swingably supported around a horizontal swing axis and extends in the front-rear direction, and a pedal plate that is attached to a swing end of the pedal arm and that is operated to be depressed. Utensils,
A stopper portion that can abut on the lower surface of the pedal plate to regulate the swing angle of the pedal operation tool;
A blocking portion that is located on a lateral side separated from the stopper portion and that prevents the pedal plate from swinging below an upper end portion of the stopper portion,
In a state in which the lateral end of the pedal plate and the stopper overlap in the swing direction of the pedal plate, the lateral other end of the pedal plate and the blocking portion overlap in the swing direction of the pedal plate. work vehicles that have been configured to.   The work vehicle according to claim 1, wherein a lateral distance between an upper end portion of the stopper portion and the blocking portion is set to a length equal to or less than a width of the pedal plate.   The upper end of the blocking portion is located closer to the lower surface of the pedal plate than the upper end of the stopper in the swing direction of the pedal operating tool. The working vehicle described in. A pedal operation that includes a pedal arm that is swingably supported around a horizontal swing axis and extends in the front-rear direction, and a pedal plate that is attached to a swing end of the pedal arm and that is operated to be depressed. Utensils,
A stopper portion that can abut on the lower surface of the pedal plate to regulate the swing angle of the pedal operation tool;
A blocking portion that is located on a lateral side separated from the stopper portion and that prevents the pedal plate from swinging below an upper end portion of the stopper portion,
The blocking portion, work vehicles that is configured to regulate the bending of the operating cable being cooperative with the pedal operation device.   The stopper according to any one of claims 1 to 5, wherein the stopper comprises a screw shaft having an adjustable amount of protrusion to the pedal plate side and a head fixed to an upper end of the screw shaft. The work vehicle according to claim 1. A pedal operation that includes a pedal arm that is swingably supported around a horizontal swing axis and extends in the front-rear direction, and a pedal plate that is attached to the swing end of the pedal arm and that is operated to be depressed. Utensils,
A stopper portion that can abut on the lower surface of the pedal plate and regulate the swing angle of the pedal operation tool;
A blocking portion that is located on a lateral side separated from the stopper portion and that prevents the pedal plate from swinging below an upper end portion of the stopper portion,
The blocking portion, work vehicles that is located laterally outward from the pedal plate with respect to the right and left center of the steering wheel.

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