JP2004330811A - Door structure for cabin - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door structure for a cabin in which a door for the cabin is composed of a door plate formed of a one-piece transparent plate and a window plate formed of the transparent plate is provided to a window hole opened in the door plate to widen a visual range over an entire area of the door and facilitate visual confirmation. <P>SOLUTION: In the cabin having the door 1 opening and closing an entrance 1a, the door plate 15 of the door 1 is formed of the one-piece transparent plate with the viewing window hole 16 opened in it, and the window hole 16 is openably closed by the window plate 17 formed of the transparent plate, supported by a rotating support part 46 provided on an upper part of the window hole 16. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a door structure provided at an entrance of a cabin installed in a control section of a traveling vehicle such as a combine, a tractor or a construction machine.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a cabin installed in a control section of a traveling vehicle as described above has a door that slides in a front-rear direction with respect to a doorway and opens and closes. (For example, refer to Patent Document 1).
The door structure disclosed in this publication is to form a double-structured door plate by pressing and joining an outer plate and an inner plate made of an iron plate to form a double-structured door plate, and to form a window hole opened above and below the door plate. A window plate is attached to form a viewing window. An upper support, a middle support, and a lower support are provided at the upper, middle, and lower portions of the inner side of the door plate, respectively, and are slidably engaged with guide rail members formed at the upper, middle, and lower portions on the entrance side. It is configured to support each other.
The guide rail member includes an upper guide rail and a lower guide rail provided at an upper portion and a lower portion of a door frame forming a doorway of the cabin, and an intermediate guide portion provided along a rear wall of the cabin behind the door frame. It is configured.
[0003]
[Patent Document 1]
JP-A-2002-88813 (Page 5, FIG. 3, FIG. 5)
[0004]
[Problems to be solved by the invention]
Since the door structure having the configuration as disclosed in the above publication is configured by dividing a plurality of viewing windows into upper and lower door plates made of iron plate, the operator is in a sitting position, especially in a combine operation, etc. If you want to view the lower part or the lower part of the side, the view of the lower part of the door where the window plate of the door is not provided is blocked, so there is a disadvantage that the outside situation is easily overlooked, and the door is frequently opened and the outside is visible. You have to do it.
[0005]
Further, the double-walled iron plate door plate having the above-described structure requires a complicated press die for manufacturing, increases the weight of the door, increases the cost of the slide support member, and opens the door plate. There is a problem that a mounting structure for supporting a window plate such as a glass plate through the edge frame to the plurality of window holes becomes complicated.
Further, since the middle support portion provided in the middle portion of the door structure is guided and supported by the rail guide-like middle guide portion provided on the rear wall of the cabin, the support structure for supporting the middle guide portion on the outside rear side of the door frame. This support structure complicates the hermetic structure of the door by providing a seal member 19 between the door frame 55 and the door plate 15, as shown in FIGS. However, there is a problem that a large width cannot be formed.
[0006]
That is, the cabin 2 shown in the figure has the seal member 19 provided on the inner peripheral edge of the door frame 55 forming the entrance 1a, and when the door 1 is closed, the door plate 15 is pressed against the seal member 19 to make the airtight. To do so, it is necessary to provide a seal member 19 from the front end of the intermediate guide portion 26a to the front side (the side of the entrance 1a). Then, in order to provide the seal member 19 without notching, in order to provide the door member 55 with a stepped extension 55a which is further recessed from the front side of the intermediate guide portion 26a toward the cabin room, the extension 55a It is necessary to provide the seal member 19 on the inner peripheral edge. Accordingly, the door frame 55 having a depth having a depth in a cross-sectional shape deeply drawn in a stepped shape has drawbacks such as narrowing the opening width of the entrance / exit 1a and occupying extra room space, and is also extended. The door frame 55 having the portion 55a is not formed in a straight shape, and there is a problem in that press working using a complicated press die for deep drawing is required, and the manufacturing cost is increased.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the cabin door structure of the present invention firstly provides a cabin 2 having a door 1 for opening and closing a doorway 1a with a window hole 16 for peeping through a door plate 15 of the door 1. It is formed of a single transparent plate that is open, and the window hole 16 is supported by a rotation support portion 46 provided thereabove and is opened and closed by a window plate 17 formed of a transparent plate. .
[0008]
Secondly, a door frame 15a for attaching and supporting the door 1 to a door frame 55 forming the entrance 1a is provided with an upper side frame 21 provided along the width direction of the upper part, the middle part and the lower part inside the door plate 15. It is characterized in that the intermediate frame 22 and the lower frame 23 are connected to a vertical frame 24 fixed to one side of the door plate 15.
[0009]
Third, the upper support portion 25, the guide rail 26 and the lower support portion 27 provided on the upper side frame 21, the intermediate frame 22, and the lower side frame 23 are respectively combined with the upper guide rail 30 and the middle guide portion 31 provided on the door frame 55 side. And the lower guide rail 32 so as to be slidable, and the door 1 is slidably moved to open and close the entrance 1a.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral A is a combine shown as an example of a working vehicle in which a cabin 2 including a door 1 according to the door structure of the present invention is installed in a control unit. In the combine A, a cabin 2 and a grain tank 5 including a grain discharge auger device 4 are arranged from one side on one side of a traveling machine body 3 having a crawler type traveling device 3a, and a threshing unit (not shown) is installed on the other side. A cutting section 6 is provided in front of the section to cut grain and supply it to the threshing section. An engine section 7 is installed between the cabin 2 and the Glen tank 5, and a steering section seat is mounted on the engine section 7. (Not shown).
[0011]
The grain discharging auger device 4 is provided with a grain discharging auger 10 via a connecting rotating part 9 so as to be able to move up and down and pivotally on a vertical feeding auger 8 standing upright at the rear of the Glen tank 5. The grains in the Glen tank 5 are discharged from a discharge section 10 a formed at the tip of the grain discharge auger 10.
As shown in FIGS. 1, 3, and 4, the grain discharging auger 10 is stored in a substantially horizontal state on the left side of the cabin 2 and is connected via the connecting rotary unit 9 when discharging the grain. The upright rotation and the turning operation are performed at an arbitrary angle upward, and the kernel is switched to the kernel discharging posture to discharge the kernel from the discharging unit 10a.
[0012]
As shown in FIGS. 1 to 4, the cabin 2 includes a cabin frame 11 formed in a box frame shape having a ceiling plate 11 a having a size to cover an upper part of the control unit, and a front surface and a rear surface of the cabin frame 11. Is provided with a front window 12 and a rear window 12a, a door 1 for getting on and off and a side window 13 that can be opened and closed are provided on the right and left sides, respectively, so that an operator sitting on a seat can visually recognize each direction. I have.
The door 1 will be described with reference to FIGS. The door 1 is slidably supported in the front-rear direction at the entrance / exit 1a of the control unit. The door 1 is made of a single transparent plate made of a tempered glass or plastic plate. It is constituted by a window plate 17 which closes a window hole 16 opened in the middle part in an openable and closable manner. A band-shaped seal as a member for airtight holding and cushioning made of a flexible or elastic rubber or plastic material is provided on the outer peripheral edge formed along the shape of the door plate 15 and the inner peripheral edge of the window hole 16. Members (weather strips) 19 and 19a are provided.
[0013]
As shown in FIGS. 6 and 8, the door plate 15 has mounting bolts 20, 20... On the upper side, the middle side (substantially the center), the lower side, and the vertical front side on the indoor side surface. The upper frame 21, the intermediate frame 22, the lower frame 23, and the straight vertical frame 24, which are fixed in the width direction, are attached and fixed, and these frames are integrally connected in a substantially E-shape in side view. The frame 15a is configured.
With this configuration, the door frame 15a serves as a reinforcing member that reinforces the single door plate 15 so as to have rigidity in the vertical and lateral directions. The support member is also provided with the support portion 25, the middle guide rail 26 serving as the middle support portion, and the lower support portion 27. At this time, as shown by the dotted line in FIG. 6, the intermediate frame 22 and the upper side frame 21 or the lower side frame 23 can be connected as necessary to increase the frame rigidity.
The support portions 25, 26, and 27 are slidable with respect to an upper guide rail 30, an intermediate guide portion 31, and a lower guide rail 32, which are provided on the cabin frame 11, which will be described later. Is configured to be engaged and supported. As shown in FIG. 8, the vertical frame 24 has an intermediate portion inflated toward the inside of the door plate 15, and also serves as a handle for opening and closing operation.
[0014]
Next, each of the support portions will be described. First, the upper support 25 shown in FIGS. 6 and 9 pivotally supports a holder 25c on a vertical pin 25b of a bracket 25a erected on the base end side (front of the body) of the upper side frame 21. It comprises guide rollers 35 and 35a which are rotatably supported on the holder 25c so that they can rotate vertically and horizontally. The guide rollers 35, 35a are movably engaged with the rail grooves of the upper guide rail 30, and are positioned and supported.
As shown in FIGS. 6 and 12, the middle guide rail 26 is formed of a rail member provided along the intermediate frame 22, and engages with guide rollers 36 and 36a of a middle guide portion 31 provided on a door frame 55 described later. It is a configuration to make it. The middle guide rail 26 is formed by a straight forward / backward moving path 26 a along the door plate 15 and a lateral moving path 26 b bent at the rear portion and approaching the door plate 15.
[0015]
As shown in FIGS. 6 and 13, the lower support portion 27 is provided with a slide rail 38 slidably in the front-rear direction on a rail guide 37 provided along the lower side frame 23, and a guide roller is provided on a front portion of the slide rail 38. An arm 40 a provided with a guide roller 40 is provided, and the guide roller 40 is movably engaged with a lower guide rail 32 provided on the cabin frame 11.
As shown in FIGS. 6 and 10, the vertical frame 24 is provided with concave and convex door-stopping pieces 41, 41 on its upper and lower sides, and the door-stopping pieces 41, 41 protrude from the cabin frame 11. By contacting the contact portions 42, 42, the front side of the door 1 at the time of closing is positioned.
[0016]
On the other hand, a bracket 45 made of a wide plate provided with a door lock portion 43 is integrally provided at the rear end of the intermediate frame 22, and the bracket 45 is fastened and fixed to the door plate 15 by mounting bolts 20. Thus, the lower portion of the door plate 15 is formed in a cutout shape along the outer shape of the engine portion 7, so that the middle portion of the rear portion becomes a projecting halfway corner portion, and the door plate 15 can be reinforced. The guide rail 26 can also be reinforced and supported. The door lock unit 43 has a handle 44 for unlocking operation outside the door plate 15.
[0017]
Then, the door 1 configured as described above opens a window hole (viewing window) 16 for checking peep between the upper side frame 21 and the intermediate frame 22 as shown in FIGS. 6, 10, and 11. A window plate 17 made of a transparent plate is provided in the window hole 16 so as to be openable and closable.
The window hole 16 is provided with a sealing member 19a stretched over an inner peripheral surface where an edge is formed, and forms a sealing portion between the window member 17 and the sealing member 19a. Also, a plurality of pivoting support portions (hinges) 46 are provided on the outer upper side of the hole to mount and support the window plate 17, so that the window plate 17 is directed upward from the cabin chamber to the outside with the pivotal support portion 46 as a fulcrum. Can be opened. The window plate 17 has a lock lever 47 provided at the lower portion on the inner side thereof detachably engaged with the lower inner side of the window hole 16 to open and close the window plate 17.
Further, the rotation supporting portion 46 is fastened together with the door plate 15 and the mounting portion of the upper side frame 21 located on the inner side via the mounting bolt 20, and the window plate 17 can be fixed without applying excessive force to the door plate 15. I support it. This makes it possible to reinforce the narrow upper side of the door plate 15 via the door frame 15a, and to form the window hole 16 as large as possible while reinforcing the opening of the door plate 15. I have.
[0018]
Next, the door frame 55 formed on the right side of the cabin frame 11 and supporting the door 1 will be described with reference to FIGS. The door frame 55 includes a vertical front frame 50 erected on the front side and an upper rear frame 51 erected in parallel with the front frame 50 at an opening interval in the width direction and rearward. And a lower rear frame 51a connected to the lower portion and bent toward the front side along the outer shape of the engine section 7, and an upper frame 52 and a lower frame 53 connecting the upper and lower sides. When the door 1 is closed, the outer surface of the door frame 55 has a shape in which the sealing member 19 extended along the outer peripheral edge of the door plate 15 is brought into contact with an airtight structure.
[0019]
In this door frame 55, the upper guide rail 30 is provided in parallel along the lower part of the upper frame 52, the middle guide part 31 is provided inside the lower part of the upper rear frame 51, and the lower guide 53 is provided along the lower part of the lower frame 53. Rails 32 are provided in parallel. The front frame 50 is provided with the door stop portions 42, 42, and the upper rear frame 51 is provided with a lock engagement portion 56 which is detachably connected to the door lock portion 43.
[0020]
Next, the upper guide rail 30 and the upper support 25 will be described with reference to FIG. The upper guide rail 30 is formed in a groove shape with a lateral movement path 30b which is smoothly bent from the front side of the front-rear movement path 30a along the upper side frame 21 toward the inside of the cabin 2. 25 guide rollers 35, 35a are engaged to support the upper part of the door 1.
As a result, as shown by the solid line in the figure, when the upper support portion 25 is located at the forefront of the lateral movement path 30b, the door 1 is brought into a closed state in which the seal member 19 is pressed against the door frame 55, and from here. At the initial stage when the operator moves the door 1 backward, the upper support 25 is moved to the front-rear movement path 30a via the horizontal movement path 30b, and the door 1 can be fully opened as shown by the dotted line.
[0021]
Next, as shown in FIGS. 7 and 12, a bracket 57 for supporting the guide rollers 36 and 36a engaged with the middle guide rail 26 has a vertical pin 59 provided on the upper rear frame 51. , So as to support the intermediate portion of the door 1 via the guide rollers 36, 36a and the arm bracket 57. The middle guide portion 31 is not limited to the door frame 55, and may be provided on a frame body such as a cover member of the engine portion 7 formed in the cabin 2 room.
As a result, when the guide rollers 36 and 36a are engaged with the lateral movement path 26b as shown by the solid line in the figure, the door 1 is closed by pressing the seal member 19 against the door frame 55, From here, at the initial stage of moving the door 1 backward, the lateral movement path 26b is pushed outward through the middle guide portion 31, and the arm bracket 57 is moved outward around the vertical pin 59 as shown by a dotted line. In the rotationally deformed state, the door 1 can be fully opened by supporting the back-and-forth moving path 26a moving backward.
[0022]
Next, the lower guide rail 32 and the lower support 27 of the door 1 will be described with reference to FIGS. The lower guide rail 32 is formed in a forward and backward movement path 32 a and a lateral movement path 32 b having the same shape as the upper guide rail 30, and extends along the lower side frame 53 of the door frame 55. As a result, the door 1 is closed at the position where the guide roller 40 of the lower support portion 27 is engaged at the forefront of the lateral movement path 32b, and when the door 1 is pulled backward from here, the guide roller 40 When moving from 32b to the front-back movement path, the door 1 can be moved rearward along the front-back movement path 32a while being pushed outward.
At this time, as shown by the dotted line in FIG. 13, when the guide roller 40 reaches the rear end (end) of the front and rear movement path 32a and stops moving, the slide rail 38 is fixedly moved via the guide roller 40 and the arm 40a. With the door 1 further pulled (moved) rearward, the rail guide 37 moves rearward while being supported by the slide rail 38, and the door 1 can be fully opened.
[0023]
Therefore, as described above, the door 1 is provided with the upper support 25, the middle guide rail 26, and the lower support 27, and these are respectively provided on the upper guide rail 30, the middle guide 31, and the lower guide rail 32 provided on the door frame 55. The slide support structure, which is slidably engaged with the door plate 15, is provided at an intermediate portion of the door plate 15 in a state where the door frame 15 a is fixed to the single door plate 15 by the upper side frame 21 and the lower side frame 23. Since the frame 22 is provided and fixed in the width direction, and the three members are connected by the vertical frame 24, the rigidity of the door plate 15 in the vertical and width directions can be increased, and a single plate made of a transparent member such as glass can be used. A simple and inexpensive door structure using the door plate 15 can be provided.
[0024]
When the door 1 is closed, the upper support portion 25 and the middle guide rail 26 are in a state in which the door stop pieces 41, 41 of the door frame 15a are positioned in contact with the door stop portions 42, 42 of the front frame 50. As described above, the lower support portion 27 is supported at the closed position of the upper guide rail 30, the middle guide portion 31, and the lower guide rail 32, and the other is provided by the door lock portion 43 provided at the rear end of the intermediate frame 22. Since the door 1 is fixedly supported, the door 1 can be closed airtightly while the seal member 19 provided around the door plate 15 is uniformly pressed against the entire periphery of the door frame 15a.
At this time, since the middle portion of the door 1 is supported by the middle guide rail 26 and the middle guide portion 31, the door 1 can be prevented from rattling even with the vibration of the body and can maintain a stable closed posture.
[0025]
When the door 1 is opened, a handle portion formed by being inflated toward the inside of the door plate 15 is gripped and pulled, and the upper support portion 25 and the lower support portion 27 are moved to the upper guide rail 30 respectively. The door 1 is moved backward while moving outward once through the lateral movement paths 30b and 32b of the lower guide rail 32. At this time, the middle portion of the door 1 is engaged and supported by the middle guide rail 26 and the middle guide portion 31. Therefore, the door 1 can be opened while supporting it stably.
At this time, since the guide rollers 36 and 36a engaged with the middle guide rail 26 are configured to rotate around the vertical pins 59 via the arm bracket 57, the middle guide portion 31 moves backward from outside movement of the door 1. Following the movement of the middle guide rail 26, the door middle part can be smoothly guided and supported.
[0026]
Further, since the middle guide portion 31 is provided on the door opening direction side of the door frame 55 in the cabin 2 room, a guide rail member for guiding and supporting the middle portion of the door as in the prior art is provided on the outer wall of the cabin 2 with respect to the door frame 55. The seal member 19 provided on the door plate 15 is brought into contact with the door frame 55 without providing the seal member 19 on the side of the door frame 55, while eliminating the need for a support structure formed long behind the outside. Thus, the door frame 55 can be formed into a frame structure including a rod having a simple shape without forming a thick frame that is drawn deep in steps.
Therefore, the manufacture of the door frame 55 can be easily performed by omitting a complicated and expensive deep drawing press die, and the opening / closing opening 1a can be opened as wide as possible while expanding the indoor space. Further, since the outer peripheral surface (outer surface) of the door frame 55 is formed as a flat surface, the sealing member 19 stretched on the outer periphery of the door plate 15 can be abutted with airtightness when the door 1 is closed. .
[0027]
In this manner, the door 1 whose doorway 55 can enlarge the entrance / exit opening 1a and widen the entire field of view can be viewed without opening the door 1, particularly in the combine work because the side view at the front lower side and the rear lower side is improved. There is an advantage that work without errors can be performed efficiently.
Further, as shown in FIGS. 6, 8, 10, and 11, the window hole 16 formed in the door 1 has the rigidity of the door plate 15 increased by the door frame 15a. Since the opening can be made as large as possible at the appropriate height position, the head can be easily brought out of the window hole 16 with the window plate 17 opened and retracted upward with the rotation support portion 46 as a fulcrum. Can be surely confirmed. Further, since the sealing member 19a is provided on the inner peripheral edge of the window hole 16 to cover the edge portion without extending the sealing member on the side of the window plate 17, the operator is protected when the peeping check performed with the head out, When closed, the sealing member 19a is pressed by the window plate 17 to maintain airtightness.
The door 1 provided with the window plate 17 in the window hole 16 of the door plate 15 configured as described above opens and closes on one side of the door frame 55 via a hinge without being limited to the illustrated example. Can be a system door.
[0028]
Next, the configuration of the side window 13 formed on the left side of the cabin 2 will be described with reference to FIGS. The side window 13 has a rectangular window frame formed on the left side of the cabin 2 and a wall surface 61 made of transparent glass having a window hole 60 formed so that an operator can take out the upper body. And a window plate 62 that can be opened and closed.
A sealing member 19a is provided on the periphery of the window hole 60 in the wall surface 61 in the same manner as the door plate 15 described above, and a window plate 62 is provided on the upper portion of the window hole 60 by a plurality of hinges 46 so as to be openable and closable. A lock lever 63 operable to open and close the lock is provided below the plate 62 (FIG. 7). When the window plate 62 is rotated upward with the hinge 46 as a fulcrum, the lower end of the window plate 62 is located on the side of the cabin 2. Can be opened to a position close to the lower side of the grain discharge auger 10 located in the storage posture.
[0029]
In the side window 13 configured as described above, since both the wall surface 61 and the window plate 62 are formed of a transparent member, even when the window plate 62 is closed, the field of view is widened through both, and, for example, from the reaper 6 It is possible to appropriately monitor the condition of the grain culm conveyed to the threshing unit.
In addition, since the window plate 62 can be pivoted with the hinge 46 as a fulcrum to a position where the lower portion is close to the grain discharging auger device 4, for example, the grain culm clogging has occurred in the grain culm transport path on the front side of the threshing unit. In such a case, there is a feature that the body can be laid out to the side from the window hole 60 which is greatly opened to facilitate the removal of the clogging and the like.
[0030]
【The invention's effect】
The present invention adopts the above-described cabin door structure, and has the following effects.
The door plate of the door that opens and closes the entrance is formed of a single transparent plate, and the window plate that opens and closes the window hole opened in the door plate is formed of a transparent plate. The window plate, which is supported in a suspended state by the rotating support provided above the window hole, can be widely opened from the cabin room to the outside and upward, so that the surrounding peeping can be confirmed. It can be done easily. Further, the support structure for opening and closing the window plate can be simplified.
[0031]
Also, a door frame formed by an upper side frame, an intermediate frame, and a lower side frame provided along the width direction at an upper portion, a middle portion, and a lower portion of the inside of the door plate, and a vertical frame connecting these and fixed to one side of the door plate. In addition, the rigidity of the door plate made of a single transparent plate can be increased, the opening can be reinforced, and the window hole can be largely opened.
[0032]
Further, the upper support section, the guide rail and the lower support section provided on the upper side frame, the intermediate frame and the lower side frame of the door frame are respectively combined with the upper guide rail, the middle guide section and the lower guide provided on the side of the door frame forming the entrance and exit. Since the door frame is slidably engaged with the rail, the door frame can be formed with a simple straight frame structure and the entrance can be opened widely, so that the entire field of view of the door can be widened. In addition, the sliding movement of the door is stably supported by the upper guide rail, the middle guide portion, and the lower guide rail, so that the opening and closing of the entrance can be smoothly performed.
[Brief description of the drawings]
FIG. 1 is a side view of a combine provided with a door structure according to the present invention in a cabin.
FIG. 2 is a perspective view showing the cabin with the door of FIG. 1 opened.
FIG. 3 is a front view showing a relationship between a side window of the cabin and a grain discharging auger.
FIG. 4 is a perspective view of FIG. 3;
FIG. 5 is an outer side view showing a configuration of a door.
FIG. 6 is an inner side view showing the configuration inside the door of FIG. 5;
FIG. 7 is a side view showing the configuration of the cabin with the door removed.
8 is a vertical sectional view showing the door structure of FIG.
FIG. 9 is a sectional view taken along line AA of FIG. 5;
FIG. 10 is a sectional view taken along line BB of FIG. 5;
FIG. 11 is a sectional view taken along line CC of FIG. 5;
FIG. 12 is a sectional view taken along line DD of FIG. 5;
FIG. 13 is a sectional view taken along line EE of FIG. 5;
FIG. 14 is a side view showing a conventional cabin door structure.
FIG. 15 is a side view showing the structure of the cabin with the door of FIG. 14 removed.
[Explanation of symbols]
A Combine 1 Door 1a Doorway 2 Cabin 15 Door plate 15a Door frame 16 Window hole 17 Window plate 19, 19a Seal member 21 Upper side frame 22 Intermediate frame 23 Lower side frame 24 Vertical frame 25 Upper support 26 Middle guide rail (Medium support )
27 Lower support 30 Upper guide rail (upper guide)
31 Middle guide part 32 Lower guide rail (lower guide part)
46 Rotation support part 55 Door frame

Claims (3)

In a cabin (2) having a door (1) for opening and closing a doorway (1a), a single transparent plate having a window hole (16) for viewing through a door plate (15) of the door (1). And the window hole (16) is supported by a rotation support portion (46) provided above the window hole (16) and is opened and closed by a window plate (17) formed of a transparent plate. Door structure. A door frame (15a) for attaching and supporting the door (1) to a door frame (55) forming the entrance (1a) is provided along the width direction of the upper, middle and lower parts inside the door plate (15). 2. The frame according to claim 1, wherein the upper frame, the intermediate frame, and the lower frame, which are provided, are connected to a vertical frame fixed to one side of the door plate. Cabin door structure. The upper support (25), the middle guide rail (26), and the lower support (27) provided on the upper frame (21), the intermediate frame (22), and the lower frame (23) are respectively attached to the door frame (55). The door guide (1) is slidably engaged with the upper guide rail (30), the middle guide part (31) and the lower guide rail (32) provided, and the door (1) is slid to open and close the entrance (1a). Or the cabin door structure according to 2.

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