JP2004203138A - Cabin of working vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the number of part items in the cabin of a working vehicle having a sliding door when a locked state releasing unit for a full-closed door lock mechanism and a full-opened door lock mechanism is arranged and further simplify an opening or closing operation of the door. <P>SOLUTION: When a door 17 is to be provided with a full-closed door lock mechanism (a catch mechanism 26 for full-closed lock) for locking a sliding of the door 17 at its full-closed position, and a full-opened door lock mechanism (a catch mechanism 28 for full-open lock) for locking a sliding of the door 17 at its full-opened position, an indoor handle 30 capable of being opened or closed in an opening or closing direction of the door 17 is installed inside the door 17. The full-closed door lock mechanism is operated to release the locked state in response to an operation of the indoor handle 30 in its opening direction, and at the same time the full-opened door lock mechanism is operated to release the locked state in response to an operation of the indoor handle 30 in its closing direction. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention belongs to the technical field of a cabin provided in a work vehicle such as a combine.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there has been proposed a cabin for a work vehicle in which a boarding opening is opened and closed by a sliding door (for example, see Patent Document 1). This type of cabin does not require a large space outside the door when opening and closing the opening for getting on and off, so that the door can be opened and closed even in a narrow place such as a garage.
When the cabin is configured as described above, it is preferable to provide a fully-closed door lock mechanism that locks the slide of the door in the fully-closed position and a fully-open door lock mechanism that locks the slide of the door in the fully-open position. This allows the work vehicle to travel even when the door is fully opened.
[0003]
[Patent Document 1]
Japanese Utility Model Publication No. 5-85224 (FIG. 1)
[0004]
[Problems to be solved by the invention]
However, if a door is provided with a fully-closed door lock mechanism and a fully-open door lock mechanism, a lock release operating tool corresponding to each door lock mechanism is required, so that the number of parts cannot be increased and the door opening / closing operation cannot be performed. There is a problem that it becomes complicated.
[0005]
[Means for Solving the Problems]
The present invention has been made in view of the above-described circumstances in order to solve these problems, and in a work vehicle cabin that opens and closes an entrance opening / closing opening with a sliding door, the door includes: In providing a fully-closed door lock mechanism that locks the slide of the door at the fully-closed position and a fully-opened door lock mechanism that locks the slide of the door at the fully-open position, a door operable in the opening and closing direction of the door inside the door. A handle is provided to unlock the fully closed door lock mechanism in response to an operation in the opening direction of the door handle, and to unlock the fully opened door lock mechanism in response to an operation in the closing direction of the door handle. It is characterized by making it. That is, since both door lock mechanisms can be unlocked by operating the same door handle while having the fully closed door lock mechanism and the fully open door lock mechanism, the unlock operation corresponding to each door lock mechanism can be performed. Compared to the case where the components are separately provided, the number of parts can be reduced, and the operation of opening and closing the door can be simplified. In addition, the door handle is operable in the opening and closing directions, and the corresponding door lock mechanism is unlocked in accordance with the operating direction. It is possible to simultaneously perform the unlocking operation of the door lock mechanism and the sliding operation of the door.
A door handle provided with an unlock button is provided outside the door, and the fully closed door lock mechanism and the fully open door lock mechanism are unlocked in response to an unlock operation of the unlock button. And In this case, even outside the door, it is possible to perform the unlock operation of both door lock mechanisms simply by operating one lock release button. Compared to the case where the doors are separately provided outside the door, the number of parts can be reduced, and the door opening / closing operation outside the cabin can be simplified.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, one embodiment of the present invention will be described with reference to the drawings. In the drawing, reference numeral 1 denotes a combine, and the combine 1 is classified into a pre-processing unit 2 for cutting stem culms, and a threshing unit 3 for threshing grain from the cut stem and cutting kernels. A grain tank 4 for storing grains, a post-processing unit 5 for discharging the threshed culms, an operation unit 6 on which an operator rides, a cabin 7 covering the operation unit 6, and a crawler-type traveling unit 8 is provided.
[0007]
An engine (not shown) is mounted at a lower rear position of the operation unit 6, and each unit is operated by generated power. A radiator (not shown) is provided upright on the right outside of the engine, and the engine cooling water in the radiator is cooled by sucking outside air through the radiator. The right outside of the radiator is covered with a detachable engine cover 9, and outside air is sucked in through an intake hole formed in the engine cover 9.
[0008]
The cabin 7 includes a cabin body 10, a roof panel 11 provided above the cabin body 10, a windshield 13 attached to a front window opening 12 of the cabin body 10, and a left side window opening 14 of the cabin body 10. , A rear glass (not shown) attached to a rear window opening (not shown) of the cabin body 10, and a boarding / alighting opening 16 formed at the front right side of the cabin body 10. Door 17 and a right side glass 19 attached to a right side window opening 18 formed on the upper right rear side of the cabin body 10.
[0009]
The front end of the entry / exit opening 16 is formed linearly in the vertical direction, while the lower side of the rear end is retracted forward so as to avoid the position of the engine cover 9. Therefore, the front and rear widths of the entrance / exit opening 16 and the door 17 are wide on the upper side and narrow on the lower side. The door 17 is slidably supported by the cabin 7 via the upper rail 20, the intermediate rail 21, and the lower rail 22 so that the door 17 can be opened and closed by sliding along the outer surface of the cabin 7. Is configured. Hereinafter, the configurations of the upper rail 20, the intermediate rail 21, and the lower rail 22 will be described.
[0010]
The upper rail 20 is configured by vertically arranging a pair of upper and lower rail members 20 a and 20 b formed in a zigzag cross section at predetermined intervals, and is provided at the upper end of the entrance opening 16. It is provided integrally with the cabin 7 so as to follow. Although the upper rail 20 faces the front-rear direction as a whole, its front end side is curved and formed in the cabin.
[0011]
An upper roller body 23 movably supported by an upper rail 20 is provided at a front upper end portion on the inner side surface of the door 17. The upper roller body 23 includes a fixed bracket 23a fixed to the door 17 side, a movable bracket 23c provided to be able to swing back and forth with respect to the fixed bracket 23a via a support shaft 23b facing in the vertical direction, and the movable bracket 23c. A pair of left and right support rollers 23e rotatably provided on the movable bracket 23c via a vertically oriented support shaft, and a pair of left and right support rollers 23e provided rotatably on the movable bracket 23c with respect to the movable bracket 23c. And is provided.
[0012]
The upper and lower support rollers 23d are rotatably set on the upward guide surface of the lower rail member 20b constituting the upper rail 20, thereby supporting the door 17 in the vertical direction. The door 17 is supported in the left-right direction by being loosely set in the downward guide groove of the upper rail member 20a. Thereby, the upper end of the door 17 is slidably supported along the upper rail 20.
[0013]
The intermediate rail 21 is formed by providing a rail member 21b having a U-shaped cross section in a groove of a rail support member 21a formed to have a U-shaped cross section. It is provided integrally in the front-rear direction at the upper and lower middle portions of the portion 16. Although the intermediate rail 21 is directed in the front-rear direction as a whole, its front end is curved toward the inside of the cabin.
[0014]
An intermediate roller body 24 movably supported by an intermediate rail 21 is provided at an upper and lower intermediate position of a rear end portion on the inner side surface of the door 17. The intermediate roller body 24 includes a fixed bracket 24a fixed to the door 17 side, a movable bracket 24c provided to be able to swing back and forth with respect to the fixed bracket 24a via a support shaft 24b facing in the vertical direction, and the movable bracket 24c. A pair of left and right support rollers 24e rotatably provided on the movable bracket 24c via a vertically oriented support shaft, and a pair of left and right support rollers 24e provided rotatably on the movable bracket 24c with respect to the movable bracket 24c. And is provided.
[0015]
The upper and lower support rollers 24d are rotatably set on an upward guide surface of a rail member 21b constituting the intermediate rail 21 to support the door 17 in the vertical direction, while the left and right support rollers 24e are The door 17 is supported in the left-right direction by being loosely set in the downward guide groove of the member 21b. Thus, the intermediate portion of the door 17 is slidably supported along the intermediate rail 21.
[0016]
The lower rail 22 includes a fixed rail member 22a having a zigzag cross section provided on the cabin 7 side, a telescopic auxiliary rail member 22b provided on the door 17 side, and a connecting member provided on a front end of the auxiliary rail member 22b. 22c. The fixed rail member 22a is provided integrally with the cabin 7 along the lower end of the entry / exit opening 16 and faces the front-rear direction as a whole, but its front end is curved toward the inside of the cabin.
[0017]
The auxiliary rail member 22b includes a pair of rail members slidably fitted to each other, and a return spring 22d for urging the pair of rail members in a reduction direction. One of the rail members is fixed to the inside surface of the lower end of the door 17 in the front-rear direction, and the connecting member 22c is integrally provided at the front end of the other rail member. The connecting member 22c is formed of an L-shaped plate member when viewed from the front, and left and right support rollers 22e are rotatably provided on the upper surface of the distal end thereof via a support shaft pointing in the vertical direction. The left and right support rollers 22e support the door 17 in the left and right directions by being set loosely in the downward guide grooves of the fixed rail member 22a. Thereby, the lower end of the door 17 is slidably supported along the lower rail 22.
[0018]
Next, the opening and closing operation of the door 17 will be described. When the door 17 in the fully closed state is slid in the opening direction, the door 17 is guided by the curved portions of the rails 20 to 22 and once moves outward, and then slides linearly backward. At this time, the auxiliary rail member 22b of the lower rail 22 maintains the contracted state by the urging force of the return spring 22d, and the left and right support rollers 22e move along the fixed rail member 22a, so that the left and right sides of the door 17 are moved. Is regulated. When the left and right support rollers 22e reach the rear end of the fixed rail member 22a, the auxiliary rail member 22b starts to extend against the urging force of the return spring 22d, and the front end of the door 17 is moved to the rear end of the entry / exit opening 16. Until the limit is exceeded, rattling in the left-right direction is continued.
[0019]
On the other hand, when the fully opened door 17 is slid in the closing direction, the door 17 slides straight forward. At this time, the auxiliary rail member 22b of the lower rail 22 is gradually reduced by the urging force of the return spring 22d, and after the contraction state is reached, the left and right support rollers 22e start moving within the fixed rail member 22a. When the door 17 approaches the fully closed position (FIGS. 6A, 7A, and 8A), first, the lower left and right support rollers 22e reach the curved portion of the fixed rail member 22a. Subsequently, when the upper roller body 23 reaches the curved portion of the upper rail 20 (FIGS. 6B, 7B, and 8B), the front end side of the door 17 starts to enter the inside of the cabin. . Thereafter, when the intermediate roller body 24 reaches the curved portion of the intermediate rail 21 (FIGS. 6C, 7C and 8C), the door 17 is moved inward into the cabin with its front end as a fulcrum. It reaches the fully closed position while swinging (FIGS. 6 (d), 7 (d) and 8 (d)).
[0020]
Between the cabin 7 and the door 17, a fully-closed door lock mechanism that locks the slide of the door 17 at a fully-closed position and a fully-opened door lock mechanism that locks at a fully-opened position are configured. The fully closed door lock mechanism includes a U-shaped fully closed lock striker 25 provided on the cabin 7 side and a fully closed lock striker 25 provided on the door 17 and engaged with the fully closed lock striker 25 at the fully closed position. The catch mechanism 26 is provided.
[0021]
The fully closed lock catch mechanism 26 is provided at the rear end portion of the inner surface of the door 17 so that the catch port 26a faces the inside of the cabin, and the closed door 17 is moved inward into the cabin with the front end side as a fulcrum. At the time of swinging, the slide of the door 17 is locked by the internal latch member 26b engaging with the fully closed lock striker 25.
The fully-closed lock striker 25 corresponds to the mounting position of the fully-closed lock catch mechanism 26, and is attached to the rear end of the entrance / exit opening 16 at a position behind the front end position of the intermediate rail 21. It is set to be. That is, with the above arrangement, the mounting positions of the fully closed lock striker 25 and the fully closed lock catch mechanism 26 are separated from the swing fulcrum of the door 17 during the closing operation, and the fully closed The amount of movement of the locking catch mechanism 26 increases. This facilitates the engagement of the fully-closed locking catch mechanism 26 with the fully-closed locking striker 25, and improves the closing state of the door 17.
[0022]
The fully-open door lock mechanism is provided with a U-shaped fully-open lock striker 27 provided on the cabin 7 side (the rear end of the entry / exit opening 16) and a fully-open lock striker 27 provided on the door 17 side. And a catch mechanism 28 for full-open lock to be engaged. The fully-open lock catch mechanism 28 includes a vertically rotatable latch member 28 a, and is attached to the front end side of the inner surface of the door 17. When the door 17 that has been opened reaches the fully opened position, the latch member 28a is retracted and pivoted upward once by the tip inclined portion hitting the fully opened lock striker 27, and then automatically moved to the fully opened lock striker 27. To lock the slide of the door 17.
[0023]
Door handles 29 and 30 for opening and closing the door 17 are provided outside and inside the door 17. The outer door handle 29 is a fixed handle, and is attached to a rear portion of the outer surface of the door 17. That is, when the door 17 is closed, the rear swing of the door 17 can be actively assisted by pushing the outer door handle 29. Thereby, the engagement of the catch mechanism 26 for fully closed lock is ensured, and the closing condition of the door 17 is further improved.
[0024]
The inner door handle 30 is a movable handle that is rotatable back and forth, and is attached to a front portion of the inner surface of the door 17. The inner door handle 30 unlocks the fully closed lock catch mechanism 26 in response to the pivoting operation in the opening direction, and activates the fully open lock catch mechanism 28 in response to the pivoting operation in the closing direction. The lock mechanism 26 is connected to a fully closed lock catch mechanism 26 and a fully open lock catch mechanism 28 so as to perform an unlock operation. On the other hand, the outer door handle 29 is provided with a lock release button 31 that can freely appear and disappear. The lock release button 31 is operated to release the fully closed lock catch mechanism 26 and the fully open lock catch mechanism 28 in response to the lock release operation (push operation). The lock catch mechanism 28 is linked. Hereinafter, the configuration and operation for the lock release operation will be described with reference to FIGS.
[0025]
A fully-closed lock release lever 32 is provided in the vicinity of the fully-closed lock catch mechanism 26, and is rotatable back and forth. Is done. On the other hand, the fully-open lock catch mechanism 28 includes a latch member 28a and a fully-open lock release lever 28c provided integrally with a support shaft 28b of the latch member 28a. In response to the rotation, the lock mechanism 28 (latch member 28a) for fully opening lock is unlocked.
[0026]
The support shaft 30a of the inner door handle 30 rotatably supports two interlocking plates 33 and 34 that overlap. The first interlocking plate 33 has three arm portions 33a to 33c protruding in the outer diameter direction. The first arm portion 33a is connected to a fully open lock release lever 28c via a connecting rod 35. A first spring 36 that biases the first interlocking plate 33 clockwise in front view is connected to the second arm portion 33b. As a result, the full-open lock release lever 28c is held at the lock position by the urging force of the first spring 36.
[0027]
On the other hand, the second interlocking plate 34 has two arms 34a and 34b protruding in the outer diameter direction, and the first arm 34a is connected to the fully closed lock release lever 32 via the connecting rod 37. The arm 32a is connected to the second arm 34b, and a second spring 38 that urges the second interlocking plate 34 in the counterclockwise direction when viewed from the front is connected to the second arm 34b. As a result, the fully closed lock release lever 32 is held at the locked position by the urging force of the second spring 38.
[0028]
The inner door handle 30 is engaged with the first interlocking plate 33 from the counterclockwise direction when viewed from the front, and is engaged with the second interlocking plate 34 from the clockwise direction when viewed from the front. It is held (FIG. 9). Here, when the inner door handle 30 is rotated in the opening direction (rearward), the second interlocking plate 34 is interlocked to pull the arm 32a, and the fully closed lock release lever 32 is rotated rearward (FIG. 10). ). As a result, the fully closed lock catch mechanism 26 performs the unlocking operation, and the opening operation of the door 17 is permitted. On the other hand, when the inner door handle 30 is turned in the closing direction (forward), the first interlocking plate 33 cooperates to push up the fully open lock release lever 28c (FIG. 11). As a result, the fully open lock catch mechanism 28 performs the unlocking operation, and the closing operation of the door 17 is permitted.
[0029]
Next, the unlocking operation of the fully closed lock catch mechanism 26 and the fully open lock catch mechanism 28 by the lock release button 31 will be described. At a position facing the base end of the lock release button 31, a lock release plate 39 which is rotated in response to a pressing operation of the lock release button 31 and has an L-shape in plan view is provided. The lock release plate 39 is urged by a spring 40 in a direction in which the lock release button 31 protrudes, and is connected to the third arm portion 33c of the first interlocking plate 33 via a third connection rod 41. . That is, when the lock release button 31 is pushed in, the lock release plate 39 that rotates with the push operation pushes the fully closed lock release lever 32 rearward (FIG. 11). As a result, the fully closed lock catch mechanism 26 performs the unlocking operation, and the opening operation of the door 17 is permitted. When the lock release plate 39 rotates, the third arm portion 33c is pulled via the third connecting rod 41, and the first interlocking plate 33 rotates counterclockwise in front view. Thereby, the catch mechanism 28 for full-open lock also performs the unlocking operation, and the closing operation of the door 17 is allowed.
[0030]
In the cabin 7 configured as described above, when the door 17 is fully opened, the front end side is slid and locked by the fully open door lock mechanism, but the rear end side of the door 17 is supported only by the intermediate rail 21. For this reason, in the present embodiment, a detachment prevention guide 42 is provided at the rear end of the intermediate rail 21 in order to securely stop the intermediate roller body 24. The outer stopper prevention guide 42 is a plate member having a slit-like locking groove 42a. When the door 17 is fully opened, the movable bracket 24c of the intermediate roller body 24 enters the locking groove 42a, and the support rollers 24d and 24e are closed. The outward movement is regulated by the detent prevention guide 42. Thus, even when the vehicle travels with the door 17 fully opened, it is possible to avoid the inconvenience that the door 17 comes off due to the vibration.
[0031]
In the structure configured as described above, the cabin 7 opens and closes the entry / exit opening 16 with a sliding door 17 and locks the door 17 in a fully closed position with a fully closed door lock mechanism ( In providing a fully-closed lock catch mechanism 26) and a fully-open door lock mechanism (fully-open lock catch mechanism 28) that locks the slide of the door 17 in the fully open position, the door 17 operates inside the door 17 in the opening and closing direction of the door 17. A possible inner door handle 30 is provided, a fully-closed door lock mechanism is unlocked in response to an operation of the inner door handle 30 in an opening direction, and a fully opened door is operated in accordance with an operation of the inner door handle 30 in a closing direction. In order to unlock the lock mechanism, both door lock mechanisms are provided while having a fully closed door lock mechanism and a fully open door lock mechanism. The unlocking operation can be performed by operating the same inner door handle 30. As a result, the number of parts can be reduced as compared with the case where the unlocking operation tools corresponding to each door lock mechanism are separately provided. Opening and closing operation can be simplified.
[0032]
In addition, the inner door handle 30 is operable in the opening and closing direction, and the corresponding door lock mechanism is unlocked in accordance with the operating direction, so that the inner door handle 30 can be operated in any direction. Thus, the unlocking operation of the corresponding door lock mechanism and the sliding operation of the door 17 can be performed simultaneously.
[0033]
Further, an outside door handle 29 having an unlock button 31 is provided outside the door 17, and a fully closed door lock mechanism and a fully open door lock mechanism are unlocked in response to an unlock operation of the unlock button 31. Even outside the door 17, it is possible to perform the unlock operation of both door lock mechanisms by operating only one unlock button 31. As a result, the unlocking operation tool corresponding to each door lock mechanism can be used. Compared to a case where the door 17 is separately provided outside the door 17, the number of parts can be reduced, and the opening and closing operation of the door 17 outside the cabin can be simplified.
[Brief description of the drawings]
FIG. 1 is a perspective view of a combine.
FIG. 2 is a right side view of the cabin (no door).
FIG. 3 is a right side view of the cabin (no door).
FIG. 4 is an inner side view of the door.
FIG. 5 is an inner side view of a door (without an inner cover).
FIG. 6 is an operation explanatory view of an upper rail.
FIG. 7 is an explanatory diagram of an operation of the intermediate rail.
FIG. 8 is an explanatory diagram of an operation of a lower rail.
FIG. 9 is an explanatory diagram of a door lock releasing operation (at a normal time).
FIG. 10 is an explanatory diagram of a door lock releasing operation (at the time of an inner door handle opening operation).
FIG. 11 is an explanatory diagram of a door lock releasing operation (during an inner door handle closing operation or an unlock button operation).
FIG. 12 is a side view of the rear part of the intermediate rail showing the external stopper prevention guide.
FIG. 13 is a sectional view of the same.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 combine 7 cabin 9 engine cover 10 cabin main body 16 getting on and off opening 17 door 20 upper rail 21 intermediate rail 22 lower rail 23 upper roller body 24 intermediate roller body 25 fully closed lock striker 26 fully closed lock catch mechanism 27 fully open Lock striker 28 Fully open lock catch mechanism 29 Outer door handle 30 Inner door handle 31 Lock release button

Claims (2)

In a work vehicle cabin for opening and closing an opening for entry and exit with a sliding door, a fully-closed door lock mechanism that locks the slide of the door in a fully-closed position, and a fully-open door that locks the slide of the door in a fully open position. In providing the lock mechanism, a door handle operable in the opening and closing direction of the door is provided inside the door, and the fully closed door lock mechanism is unlocked in response to an operation in the opening direction of the door handle. A cabin for a working vehicle, wherein the fully open door lock mechanism is unlocked in response to an operation in a closing direction of the door handle. 2. A door handle according to claim 1, further comprising a door handle provided with an unlock button outside the door, and unlocking the fully-closed door lock mechanism and the fully-open door lock mechanism in response to an unlock operation of the unlock button. A cabin for a working vehicle, comprising:

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