Remote control unit, and work vehicle

Abstract

To provide a remote control unit capable of moving a remote control lever by releasing a lock only with a single hand.SOLUTION: A remote control unit 50 is provided with: a fixation part 100 having a first engaging part 120; and a movable part 200 configured to be slidable relative to the fixation part 100. The movable part 200 comprises: a second engaging part 240 configured to engage the first engaging part 120; a slide grip 250 that is fixed on the movable part 200 and moves together with the movable part 200; and a lock release grip 260 that is connected to the second engaging part 240 and moves the position of the second engaging part 240 to release the engagement of the first engaging part 120 and the second engaging part 240 or engages the first engaging part 120 and the second engaging part 240, wherein the slide grip 250 and the lock release grip 260 are placed at a distance allowing them to be operated with one hand.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a remote control unit and a work vehicle. [Background technology]

[0002] Work vehicles such as construction machinery are operated by an operator. Some work vehicles are equipped with a remote control lever (operation lever) for operating the work vehicle on either the left or right side or either the left or right side of the operator seat on which the operator sits. Some remote control levers are configured to be slidable so that their position can be changed according to the operator's physique and the operator's posture during work. Patent Document 1 describes a lock / unlock device for a slide mechanism of a remote control unit (console box) equipped with a remote control lever.

[0003] FIG. 9 is a diagram for explaining a locking / unlocking device of a remote control unit 903 according to the prior art. The remote control unit 903 is configured so that a remote control lever 904 can be moved in the front-rear direction of the work vehicle by sliding a movable rail 913 relative to a fixed rail 912. The remote control unit 903 has a locking / unlocking device for fixing the remote control unit 903 at a position desired by the operator. When a push button 932 of the locking / unlocking device is pressed, a bifurcated lever 928 rotates about a pin 927 as a fulcrum, and a lower leg 929 pulls a wire 924 upward. As a result, a locking claw 921 inserted in an engagement groove 919 of a guide rail mechanism 908 rotates about a pin 920 as a fulcrum and comes out of the engagement groove 919, thereby releasing the lock. As a result, the remote control unit 903 can move freely.

[0004] When the operator moves remote control unit 903 to a desired position and releases push button 932, lock claw 921 engages with engagement groove 919 due to the biasing force of spring 926. This fixes remote control unit 903 in the desired position. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Publication number 7-43212 Summary of the Invention [Problem to be solved by the invention]

[0006] However, in the conventional lock / unlock device for the slide mechanism of the remote control unit, the unlock button for unlocking is provided on the side of the console box. Therefore, it is not easy to unlock the console box with only one hand and move it to the desired position. However, it is possible to unlock the console box and move it by using both hands.

[0007] However, the push button is located away from the remote control lever, such as on the side of the console box. Therefore, in order to adjust the position of the remote control lever while pressing the push button, it is necessary to twist one's body to move the position of the remote control lever. In other words, there was a problem in that it was not easy to adjust the position of the remote control lever while maintaining the same posture as when operating a work vehicle.

[0008] The present invention has been made in consideration of the above circumstances, and has an object to provide a remote control unit that can be unlocked and a remote control lever moved with only one hand.

[0009] It is yet another object of the present invention to provide a work vehicle equipped with a remote control unit that allows the lock to be released and the remote control lever to be moved with only one hand. [Means for solving the problem]

[0010] [1] A remote control unit having a remote control lever for operating a work vehicle, The work vehicle is provided with a fixed part fixed to the work vehicle and having a first engagement part, and a movable part configured to be slidable relative to the fixed part, the movable part having a second engagement part configured to be engageable with the first engagement part, a slide grip fixed to the movable part and moving together with the movable part, and an unlocking grip connected to the second engagement part and moving the position of the second engagement part to release the engagement between the first engagement part and the second engagement part, or to engage the first engagement part and the second engagement part, and the slide grip and the unlocking grip are arranged at a distance such that they can be operated simultaneously with one hand.

[0011] [2] In the remote control unit of the present invention, it is preferable that the unlocking grip is configured so that the engagement between the first engagement portion and the second engagement portion is released when the unlocking grip is moved in a direction that shortens the distance between the sliding grip and the unlocking grip.

[0012] [3] In the remote control unit of the present invention, it is preferable that the movable portion further includes a biasing member that biases the second engagement portion toward the first engagement portion.

[0013] [4] In the remote control unit of the present invention, it is preferable that the unlocking grip has a protrusion that protrudes in a direction in which the unlocking grip moves.

[0014] [5] In the remote control unit of the present invention, it is preferable that the fixed portion includes a fixed rail fixed to the work vehicle, and the movable portion includes a movable rail that engages with the fixed rail.

[0015] [6] In the remote control unit of the present invention, it is preferable that the first engagement portion is a groove disposed in the fixed rail, and the second engagement portion is a claw that moves together with the movable rail.

[0016] [7] The work vehicle of the present invention is a work vehicle having a remote control unit equipped with a remote control lever, the remote control unit comprising: a fixed part fixed to the work vehicle and having a first engagement part; and a movable part configured to be slidable relative to the fixed part, the movable part having a second engagement part configured to be engageable with the first engagement part, a slide grip fixed to the movable part and moving together with the movable part, and an unlocking grip connected to the second engagement part and moving the position of the second engagement part to release the engagement between the first engagement part and the second engagement part or to engage the first engagement part and the second engagement part, the slide grip and the unlocking grip being arranged at a distance such that they can be operated simultaneously with one hand. Effect of the Invention

[0017] The remote control unit of the present invention includes a fixed part and a movable part. The movable part includes a slide grip and an unlocking grip. The unlocking grip releases the engagement between a first engagement part of the fixed part and a second engagement part of the movable part. The slide grip and the unlocking grip are disposed at a distance that allows them to be operated simultaneously with one hand.

[0018] According to the present invention, a remote control lever can be provided that allows an operator to move the remote control lever by simultaneously holding both the slide grip and the lock release grip with one hand and disengaging the first engagement portion from the second engagement portion.

[0019] The work vehicle of the present invention includes a fixed part and a movable part. The movable part has a remote control unit including a slide grip and an unlocking grip. The unlocking grip releases the engagement between a first engagement part of the fixed part and a second engagement part of the movable part. The slide grip and the unlocking grip are disposed at a distance that allows them to be operated simultaneously with one hand.

[0020] According to the present invention, a work vehicle can be provided that is equipped with a remote control lever that allows an operator to move the remote control lever while simultaneously gripping both the slide grip and the lock release grip with one hand and disengaging the first engagement portion from the second engagement portion. [Brief description of the drawings]

[0021] [Figure 1] FIG. 1 is a diagram shown for explaining a work vehicle 1 according to an embodiment. [Diagram 2] FIG. 2 is a diagram for explaining one mode of a remote control unit 50 according to an embodiment, showing a state in which a lower housing 60 is removed. [Diagram 3] FIG. 13 is a diagram for explaining another aspect of the remote control unit 50 according to the embodiment, showing a state in which the lower housing 60 is attached. [Figure 4] FIG. 2 is a perspective view for explaining a lock / unlock device of the remote control unit 50 according to the embodiment. [Diagram 5] FIG. 2 is an exploded perspective view for explaining a lock / unlock device of the remote control unit 50 according to the embodiment. [Figure 6] FIG. 6 is a perspective view of the second lock release lever 270 according to the embodiment, seen from a different direction than that in FIG. [Figure 7] 2A to 2C are diagrams shown for explaining a grommet 70 according to an embodiment. [Figure 8] 13 is a diagram for explaining the distance L between the slide grip 250 and the lock release grip 260. FIG. [Figure 9] FIG. 1 is a diagram for explaining a lock / unlock device for a remote control unit according to a conventional technique.

[0022] A mode for carrying out the present invention (hereinafter, referred to as "embodiment") will be described. The embodiment described below shows a preferred mode for carrying out the invention, and does not limit the invention according to the claims. Furthermore, not all of the elements and combinations thereof described in the embodiment are necessarily essential to the present invention.

[0023] 1. Work vehicles Fig. 1 is a diagram shown for explaining a work vehicle 1 according to an embodiment. Below, the work vehicle 1 according to the embodiment will be described taking as an example a "crawler loader" (also called a "track loader") capable of mounting a bucket (not shown) to the tip of an arm 18. Note that the external configuration of the work vehicle 1 according to the embodiment is not the gist of the present invention, so will only be described briefly.

[0024] In addition, in the following description, as shown in FIG. 1, the side of work vehicle 1 where the bucket is attached is referred to as the "front", the side opposite the side where the bucket is attached is referred to as the "rear", the bottom side of work vehicle 1 is referred to as the "bottom", the side opposite the bottom is referred to as the "top", and the left side of work vehicle 1 when viewed from behind is referred to as the "left" and the right side is referred to as the "right".

[0025] As shown in FIG. 1, the work vehicle 1 has a main body frame 11, a pair of left and right traveling devices 12 attached to the main body frame 11 and configured with crawlers (endless tracks) 13, a work device 14 attached to the main body, and a cabin 15 provided in the upper center of the main body frame 11.

[0026] The cabin 15 is formed in a box shape. Furthermore, the work vehicle 1 is provided with a front door (not shown) on the front side that can be opened and closed freely. The cabin 15 is provided with an operator seat 17 on which an operator sits facing the front of the vehicle. A remote control unit 50 including a remote control lever 400 (see FIG. 2) is provided on the left and / or right of the operator seat 17. The remote control unit 50 will be described in detail later.

[0027] An operator seated in the operator seat 17 can operate the remote control lever 400 to drive the traveling device 12 to move the work vehicle 1 and to swing the arm 18 up and down to swing the bucket up and down.

[0028] The working device 14 comprises an arm 18 arranged to surround the front, rear, left and right sides of the cabin 15, a pair of left and right hydraulic cylinders (arm cylinders) 19 attached across the main frame 11 and the arm 18, and a bucket attached to the tip of the arm 18.

[0029] 2. Remote control unit FIG. 2 is a diagram for explaining one aspect of the remote control unit 50 according to the embodiment, and shows a state in which the lower housing 60 is removed. FIG. 3 is a diagram for explaining another aspect of the remote control unit 50 according to the embodiment, and shows a state in which the lower housing 60 is attached. FIG. 4 is a perspective view for explaining a lock / unlock device of the remote control unit 50 according to the embodiment. FIG. 5 is an exploded perspective view for explaining a lock / unlock device of the remote control unit 50 according to the embodiment. FIG. 5(a) is a perspective view showing the movable rail 210. FIG. 5(b) is a perspective view showing the second lock release lever 270. FIG. 5(c) is a perspective view showing the fixed rail 110. FIG. 6 is a perspective view of the second lock release lever 270 according to the embodiment when viewed from a different direction from FIG. 5(b).

[0030] The remote control unit 50 includes a fixed part 100, a movable part 200, a lock / unlock device (reference numeral omitted), and a remote control lever 400 placed on the movable part 200, as shown in FIGS.

[0031] The fixed part 100 includes a fixed rail 110 and a first engagement part 120. The movable part 200 includes a movable rail 210, a second engagement part 240, a slide grip 250, an unlocking grip 260, a support part 255 that supports the slide grip 250, a first unlocking lever 265, and a second unlocking lever 270.

[0032] The remote control units 50 (50L, 50R) are disposed on the left and right sides, respectively, of the operator seat 17. Fig. 2 shows the remote control unit 50R disposed on the right side of the operator seat 17. Fig. 3 shows the remote control unit 50L disposed on the left side of the operator seat 17. The remote control units 50R and 50L have symmetrical shapes, except for the arrangement of switches in the operation units.

[0033] The slide grip 250 and the lock release grip 260 are disposed so that their highest positions are lower than the grip 410 of the remote control lever 400. This makes it possible to prevent the slide grip 250 and the lock release grip 260 from interfering with the operation of the remote control lever 400 when the operator operates the remote control lever 400.

[0034] The slide grip 250 and the lock release grip 260 are disposed in a position adjacent to the remote control lever 400 between the remote control lever 400 and the operator seated on the operator seat 17. Specifically, as shown in Fig. 2, the slide grip 250 and the lock release grip 260 are disposed in a position behind the remote control lever 400 in the front-rear direction and on the operator seat side of the remote control lever 400 in the left-right direction, and in a position adjacent to the remote control lever 400.

[0035] This allows the operator to adjust the position of the remote control lever 400 in the same posture as when operating the work vehicle 1. In other words, adjustment of the position of the remote control lever 400 can be easily performed.

[0036] Fig. 7 is a diagram for explaining a grommet 70 according to an embodiment. Fig. 7(a) is a diagram showing the positional relationship between the grommet 70, the slide grip 250, and the lock release grip 260, and is an enlarged view of the dashed circle A in Fig. 3. Fig. 7(b) is a diagram showing the grommet 70 as viewed from above.

[0037] The remote control unit 50 includes a housing 60 and a grommet 70. The housing 60 is provided so as to cover the outside of the movable part 200, as shown in Fig. 3. This makes it possible to prevent dust and foreign objects from entering the inside of the remote control unit 50.

[0038] The grommet 70 is disposed on the upper surface of the housing 60 at a portion where the slide grip 250 and the unlocking grip 260 protrude from the inside of the housing 60 to the outside of the housing 60. The grommet 70 includes a first hole 72 through which a support portion 255 that supports the slide grip 250 is inserted, and a second hole 74 through which a first unlocking lever 265 to which the unlocking grip 260 is connected is inserted.

[0039] The first hole 72 has a hole shape that fits the cross-sectional shape of the support part 255. The second hole 74 has an elongated hole shape, as shown in Fig. 7. This ensures that when the unlocking grip 260 is operated to move the first unlocking lever 265, the movement of the first unlocking lever 265 and the unlocking grip 260 is not hindered by the grommet 70.

[0040] 2-1. Fixed part The fixed rail 110 is fixed to the work vehicle 1. The fixed rail 110 may be directly fixed to the work vehicle 1, or may be indirectly fixed to the work vehicle 1. An example of the fixed rail 110 being indirectly fixed to the work vehicle 1 is a case in which the fixed part 100 has a fixed rail support member 130, the fixed rail 110 is fixed to the fixed rail support member 130, and the fixed rail support member 130 is fixed to the work vehicle 1, as shown in FIG. 2.

[0041] The fixed rail 110 engages with the movable rail 210 to slide the movable rail 210 in a predetermined direction. Here, the predetermined direction is the direction in which the remote control lever 400 is moved, and specifically, is the front-rear direction relative to the seating direction of the operator in the work vehicle 1.

[0042] The fixed rail 110 may have any shape as long as it can slide the movable rail 210 in a predetermined direction. For example, the fixed rail 110 may have a shape as shown in FIG. 5(c) that is formed by bending a metal plate member.

[0043] That is, fixed rail 110 has a base 112, and a first side 113 and a second side 115 standing vertically from base 112. The tip of first side 113 is bent to the left in the figure to form a first folded portion 114. The tip of second side 115 is bent to the right in the figure to form a second folded portion 116. An opening 118 is formed between the tip of first side 113 and the tip of second side 115.

[0044] As shown in Fig. 5(c), a plurality of grooves 117 are formed at the tip of the second folded portion 116. The grooves 117 form the first engagement portion 120. The first engagement portion 120 engages with the second engagement portion 240 (see Fig. 6) provided on the movable portion 200 to lock the movable portion 200 in a predetermined position. This allows the remote control lever 400 placed on the movable portion 200 to be fixed in a desired position.

[0045] 2-2. Moving parts 2, the movable rail 210 is fixed to a housing 220 of the movable part 200. As described above, the movable rail 210 slides while being guided by the fixed rail 110, and moves the movable part 200 in the front-rear direction of the work vehicle 1.

[0046] The shape of the movable rail 210 is not important as long as it can be engaged with the fixed rail 110. An example of the shape of the movable rail 210 is a shape as shown in Fig. 5(a) that can be formed by bending a metal plate member.

[0047] The movable rail 210 has a base 212, and a first side 213 and a second side 215 that are erected vertically from the base 212. The tip of the first side 213 is bent to form a third side 214. The tip of the second side 215 is bent to form a fourth side 216.

[0048] 2-3. Locking and unlocking device The lock / unlock device is configured to include a first engagement portion 120 provided on the fixed portion 100, a second engagement portion 240 provided on the movable portion 200, a slide grip 250, a lock release grip 260, a first lock release lever 265, and a second lock release lever 270.

[0049] The second engagement portion 240 is configured to be able to engage with the first engagement portion 120. The second engagement portion 240 is disposed at a first end portion 270a of the second lock release lever 270. Note that the second engagement portion 240 may be formed integrally with the second lock release lever 270 as a part of the second lock release lever 270, as shown in Fig. 6. The second lock release lever 270 will be described in detail later.

[0050] The second engagement portion 240 is, for example, a claw 272. The claw 272 engages with the groove 117 constituting the first engagement portion 120 to lock the movable portion 200 at a desired position. Note that the second engagement portion 240 is not limited to the claw 272 as long as it is possible to engage with the first engagement portion 120 to lock the movable portion 200 at a desired position. Also, as long as it is possible to engage with the first engagement portion 120, the number of claws 272 may be only one, or may be configured to include two or more claws 272.

[0051] The slide grip 250 is fixed to the movable part 200 and moves together with the movable part 200. In the remote control unit 50 according to the embodiment, the slide grip 250 is fixed to the housing 220 via a support part 255. This allows the movable part 200 and the slide grip 250 to move together as a unit. That is, the operator can hold the slide grip 250 and move the slide grip 250 in the direction in which the fixed rail 110 is disposed, thereby sliding the movable part 200 in the direction in which the fixed rail 110 is disposed.

[0052] The unlocking grip 260 is connected to the second engagement portion 240. Specifically, the unlocking grip 260 is connected to the second engagement portion 240 via a first unlocking lever 265 and a second unlocking lever 270. The unlocking grip 260 moves the position of the second engagement portion 240 to release the engagement between the first engagement portion 120 and the second engagement portion 240, or to engage the first engagement portion 120 and the second engagement portion 240.

[0053] The first lock release lever 265 has a longitudinal direction as shown in Fig. 2. The first lock release lever 265 is disposed such that a first end 265a, which is one end in the longitudinal direction, is located above a second end 265b, which is the other end in the longitudinal direction.

[0054] An unlocking grip 260 is disposed on a first end 265a of the first unlocking lever 265. A second end 265b of the first unlocking lever 265 is rotatably connected to the movable rail 210 around a rotation axis C by a bolt (reference number omitted) and a nut (reference number omitted). By rotating the first unlocking lever 265 around the rotation axis C, the distance between the slide grip 250 and the unlocking grip 260 can be changed.

[0055] The first lock release lever 265 is connected to a second lock release lever 270 at a second end 265b.

[0056] The second lock release lever 270 has a longitudinal direction. The second lock release lever 270 is disposed such that a first end 270a, which is one end in the longitudinal direction, is located behind a second end 270b, which is the other end in the longitudinal direction. The second lock release lever 270 is connected to the movable rail 210 using a bolt (reference number omitted) and a nut (reference number omitted) so as to be rotatable around a rotation axis C.

[0057] The second lock release lever 270 has a protrusion 274 (see Fig. 2 and Fig. 5(b)). The protrusion 274 is configured to engage with a notch (reference number omitted) provided in the second end 265b of the first lock release lever 265. This allows the first lock release lever 265 and the second lock release lever 270 to rotate around the rotation axis C at the same time when the lock release grip 260 is operated.

[0058] The second lock release lever 270 is disposed at a position where the second engagement portion 240 can engage with the first engagement portion 120 provided on the fixed rail 110. Specifically, the second lock release lever 270 is disposed so that the second engagement portion 240 is located in a hole provided in the movable rail 210. The second lock release lever 270 is connected to the movable rail 210 by a bolt (reference number omitted) and a nut (reference number omitted) so as to be rotatable around a rotation axis C.

[0059] In the lock / unlock device, when the unlock grip 260 is moved backward (in the direction of the arrow a in FIG. 2), the first unlock lever 265 rotates clockwise (in the direction of the arrow b in FIG. 2) about the rotation axis C. The movement of the first unlock lever 265 is transmitted to the second unlock lever 270, and the engagement between the first engagement portion 120 and the second engagement portion 240 is released.

[0060] The lock / unlock device according to the embodiment has a biasing member 276 that biases the second engagement portion 240 toward the first engagement portion 120. Therefore, in order to maintain the disengaged state between the first engagement portion 120 and the second engagement portion 240, it is necessary to hold the subsequently moved unlocking grip 260 in the position after it has been moved. The biasing member 276 will be described in detail later.

[0061] When the first engagement portion 120 and the second engagement portion 240 that have been disengaged are to be re-engaged, the hand holding the unlocking grip 260 at the rear position is released. This causes the biasing member 276 to bias the second engagement portion 240 toward the first engagement portion 120, engaging the first engagement portion 120 and the second engagement portion 240.

[0062] In addition, when the remote control unit 50 does not include the biasing member 276, the unlocking grip 260 is moved forward to rotate the first unlocking lever 265 and the second unlocking lever 270 counterclockwise about the rotation axis C. This causes the first engaging portion 120 and the second engaging portion 240 to engage with each other.

[0063] The slide grip 250 and the lock release grip 260 are disposed at such a distance that they can be operated simultaneously with one hand.

[0064] Specifically, the distance L between the slide grip 250 and the lock release grip 260 (see FIG. 8) is 10 mm or more and 100 mm or less. The distance L between the slide grip 250 and the lock release grip 260 is preferably 80 mm or less, and more preferably 60 mm or less. Moreover, the distance L between the slide grip 250 and the lock release grip 260 is preferably 20 mm or more, and more preferably 40 mm or more.

[0065] It is preferable that the stroke of the unlocking grip 260, that is, the distance that the unlocking grip 260 can be moved relative to the sliding grip 250, is short. This can improve the operability of the unlocking grip 260.

[0066] Fig. 8 is a diagram for explaining the distance L between the slide grip 250 and the unlocking grip 260. As shown in Fig. 8, in order for an operator to grasp both the slide grip 250 and the unlocking grip 260 with one hand, the operator pulls the unlocking grip 260b disposed at the front of the work vehicle 1 to move the position of the unlocking grip 260 to the position of the unlocking grip 260a, thereby bringing the unlocking grip 260 and the slide grip 250 closer to each other. At this time, the distance L (see Fig. 3) between the portion 251 of the slide grip 250 that is supported by the operator and the portion 261 of the unlocking grip 260 that is supported by the operator is referred to as the distance L.

[0067] By setting the distance between the slide grip 250 and the lock release grip 260 within the above numerical range, the operator can hold and operate both the slide grip 250 and the lock release grip 260 with one hand.

[0068] As a method for releasing the engagement between the first engagement portion 120 and the second engagement portion 240 and moving the remote control lever 400, the following method can be exemplified. The unlocking grip 260 is moved backward to release the engagement between the first engagement portion 120 and the second engagement portion 240. Next, the unlocking grip 260 and the slide grip 250 are grasped with one hand and moved forward to move the remote control lever 400 forward. The unlocking grip 260 is moved backward to release the engagement between the first engagement portion 120 and the second engagement portion 240. Next, the unlocking grip 260 and the slide grip 250 are grasped with one hand and moved backward to move the remote control lever 400 backward. Move the unlocking grip 260 backward to release the engagement between the first engagement portion 120 and the second engagement portion 240. While holding the unlocking grip 260 and the slide grip 250 in one hand, move them backward to move the remote control lever 400 backward.

[0069] It is preferable that the unlocking grip 260 is configured so that when the slide grip 250 and the unlocking grip 260 are moved in a direction that shortens the distance between them, the engagement between the first engagement portion 120 and the second engagement portion 240 is released.

[0070] For example, as shown in FIG. 2, when the slide grip 250 is positioned at the rear of the work vehicle 1 and the unlocking grip 260 is positioned at the front of the work vehicle 1, it is preferable that the unlocking grip 260 is configured to be moved toward the rear of the work vehicle 1 (in the direction of arrow a), which is the direction in which the distance between the slide grip 250 and the unlocking grip 260 becomes shorter.

[0071] Alternatively, although not shown in the figure, when the slide grip 250 is positioned at the front of the work vehicle 1 and the unlocking grip 260 is positioned at the rear of the work vehicle 1, it is preferable that the unlocking grip 260 is configured to be moved to the front of the work vehicle 1, in the direction that shortens the distance between the slide grip 250 and the unlocking grip 260.

[0072] As a result, when releasing the lock with the lock release grip 260 and sliding the remote control lever 400, the remote control lever 400 can be moved by holding both the slide grip 250 and the lock release grip 260 with one hand. As a result, the remote control lever 400 can be moved easily.

[0073] The movable part 200 preferably includes a biasing member 276 that biases the second engagement part 240 to the first engagement part 120. The biasing member 276 can be used without particular limitations as long as it is capable of biasing the second engagement part 240 to the first engagement part 120, and examples of the biasing member include various elastic members such as a wire or plate spring, a coil spring, etc.

[0074] As a result, except when the engagement between the first engagement portion 120 and the second engagement portion 240 is being released by operating the unlocking grip 260, the first engagement portion 120 and the second engagement portion 240 can be engaged with each other by the biasing force of the biasing member 276. In other words, the operator need only operate the unlocking grip 260 to release the engagement between the first engagement portion 120 and the second engagement portion 240 when moving the remote control lever 400. As a result, the series of operations required to move the remote control lever 400 can be simplified.

[0075] The unlocking grip 260 preferably has a protrusion 262 (see FIGS. 2, 3, and 7) that protrudes in the direction in which the unlocking grip 260 moves. Here, the direction in which the unlocking grip 260 moves refers to the direction in which the unlocking grip 260 is moved when releasing the engagement between the first engagement portion 120 and the second engagement portion 240, or the direction in which the unlocking grip 260 is moved to engage the first engagement portion 120 and the second engagement portion 240.

[0076] The protrusion 262 is formed so as to close from above the opening of the second hole 74 formed in the grommet 70. Here, the opening of the second hole 74 refers to an area of ​​the second hole 74 through which the first lock release lever 265 is not inserted.

[0077] Specifically, when viewed from above, protrusion 262 is preferably formed to be the same size as or larger than the opening of second hole 74. Furthermore, when viewed from above, protrusion 262 is preferably formed at a position overlapping the position of the opening of second hole 74. As shown in Figures 2, 3 and 7, protrusion 262 may have a three-dimensional shape extending in the up-down direction, or may have a flat or curved shape extending only along the surface of grommet 70.

[0078] Since the unlocking grip 260 has the protrusion 262, it is possible to prevent dust or foreign matter from entering the housing 60.

[0079] The effects achieved by the remote control unit 50 and the work vehicle 1 according to the present invention will be described below.

[0080] The remote control unit 50 of the present invention includes a fixed part 100 and a movable part 200, and the movable part 200 includes a slide grip 250 and an unlocking grip 260. The unlocking grip 260 releases the engagement between the first engagement part 120 included in the fixed part 100 and the second engagement part 240 included in the movable part 200. The slide grip 250 and the unlocking grip 260 are disposed at a distance that allows them to be operated simultaneously with one hand.

[0081] According to the remote control unit 50 of the present invention, a remote control lever 400 can be provided that allows an operator to hold both the slide grip 250 and the lock release grip 260 simultaneously in one hand and move the remote control lever 400 while disengaging the first engagement portion 120 from the second engagement portion 240.

[0082] In the remote control unit 50 of the present invention, the unlocking grip 260 is configured so that when the slide grip 250 and the unlocking grip 260 are moved in a direction that shortens the distance between them, the first engagement portion 120 and the second engagement portion 240 are released from the engagement.

[0083] As a result, when releasing the lock with the lock release grip 260 and sliding the remote control lever 400, the remote control lever 400 can be moved by holding both the slide grip 250 and the lock release grip 260 with one hand. As a result, the remote control lever 400 can be moved easily.

[0084] In the remote control unit 50 of the present invention, the movable portion 200 includes a biasing member 276 that biases the second engagement portion 240 toward the first engagement portion 120 .

[0085] With this, the operator only needs to operate the unlocking grip 260 to release the engagement between the first engagement portion 120 and the second engagement portion 240 when moving the remote control lever 400. As a result, the series of operations required to move the remote control lever 400 can be simplified.

[0086] With this, the operator only needs to operate the unlocking grip 260 to release the engagement between the first engagement portion 120 and the second engagement portion 240 when moving the remote control lever 400. As a result, the series of operations required to move the remote control lever 400 can be simplified.

[0087] In the remote control unit 50 of the present invention, the unlocking grip 260 has a protrusion 262 that protrudes in the direction in which the unlocking grip 260 moves. This makes it possible to prevent dust or foreign matter from entering the housing 60 through the second hole 74 formed in the grommet 70.

[0088] In the remote control unit 50 of the present invention, the fixed part 100 includes a fixed rail 110, and the movable part 200 includes a movable rail 210. This allows the movable part 200 to slide smoothly.

[0089] In the remote control unit 50 of the present invention, the first engagement portion 120 is a groove 117 disposed in the fixed rail 110, and the second engagement portion 240 is a claw 272 that moves together with the movable rail 210. This allows the first engagement portion 120 (groove 117) and the second engagement portion 240 (claw 272) to be engaged with each other, and the first engagement portion 120 (groove 117) and the second engagement portion 240 (claw 272) to be disengaged from each other.

[0090] The work vehicle 1 of the present invention includes a fixed part 100 and a movable part 200, and the movable part 200 has a remote control unit 50 that includes a slide grip 250 and an unlocking grip 260. The unlocking grip 260 releases the engagement between the first engagement part 120 included in the fixed part 100 and the second engagement part 240 included in the movable part 200. Furthermore, the slide grip 250 and the unlocking grip 260 are disposed at a distance that allows them to be operated simultaneously with one hand.

[0091] According to the work vehicle 1 of the present invention, a work vehicle 1 can be provided that is equipped with a remote control lever 400 that allows an operator to move the remote control lever 400 while simultaneously gripping both the slide grip 250 and the lock release grip 260 with one hand and disengaging the first engagement portion 120 from the second engagement portion 240. [Explanation of symbols]

[0092] 1...work vehicle, 50, 50L, 50R...remote control unit, 100...fixed portion, 110...fixed rail, 117...groove, 120...first engagement portion, 200...movable portion, 210...movable rail, 240...second engagement portion, 250...slide grip, 260...lock release grip, 262...projection portion, 272...claw, 276...urging member, 400...remote control lever

Claims

1. A remote control unit having a remote control lever for operating a work vehicle, A fixed part is fixed to the work vehicle and has a first engagement part, and a movable part is configured to be slidable relative to the fixed part, the movable portion has a second engagement portion configured to be engageable with the first engagement portion, a slide grip fixed to the movable portion and moving together with the movable portion, and a lock release grip connected to the second engagement portion and moving a position of the second engagement portion to release the engagement between the first engagement portion and the second engagement portion or to engage the first engagement portion and the second engagement portion, The remote control unit according to claim 1, wherein the slide grip and the lock release grip are disposed at a distance such that they can be operated simultaneously with one hand.

2. 2. The remote control unit according to claim 1, A remote control unit characterized in that the unlocking grip is configured so that the engagement between the first engagement portion and the second engagement portion is released when the unlocking grip is moved in a direction that shortens the distance between the slide grip and the unlocking grip.

3. 3. A remote control unit according to claim 2, The remote control unit according to claim 1, wherein the movable portion further includes a biasing member that biases the second engagement portion toward the first engagement portion.

4. 3. A remote control unit according to claim 2, The remote control unit according to claim 1, wherein the unlocking grip has a protrusion that protrudes in a direction in which the unlocking grip moves.

5. 2. The remote control unit according to claim 1, The fixed portion includes a fixed rail fixed to the work vehicle, A remote control unit according to claim 1, wherein the movable portion includes a movable rail that engages with the fixed rail.

6. 6. A remote control unit according to claim 5, the first engagement portion is a groove disposed in the fixed rail, The second engagement portion is a claw that moves together with the movable rail.

7. A work vehicle having a remote control unit equipped with a remote control lever, The remote control unit includes a fixed portion fixed to the work vehicle and having a first engagement portion, and a movable portion configured to be slidable relative to the fixed portion, the movable portion has a second engagement portion configured to be engageable with the first engagement portion, a slide grip fixed to the movable portion and moving together with the movable portion, and a lock release grip connected to the second engagement portion and moving a position of the second engagement portion to release the engagement between the first engagement portion and the second engagement portion or to engage the first engagement portion and the second engagement portion, A work vehicle characterized in that the slide grip and the lock release grip are disposed at a distance such that they can be operated simultaneously with one hand.

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