JP3330551B2 - Moving opening and closing type operation port device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure capable of moving in one direction and another direction of an opening of an article storage chamber, a one-side winding member and another side winding member supported by the structure, and A one-side covering member locked to the one-side end portion of the opening and the one-side winding member; and a second-side covering member locked to the other-side end portion and the other-side winding member. When the structure is moved, one of the one-side covering member and the other-side covering member is unwound and the other is wound up while the one-side covering member and the other-side covering member are wound up. The present invention relates to an operation port device configured to cover the opening with a member. This apparatus is a single-wafer type apparatus in which a flat work such as an LCD glass substrate is stored in multiple stages in an article storage room and heat-treated. It is advantageously used for an apparatus that moves the operation port while partitioning and takes in and out a work.

[0002]

2. Description of the Related Art In a heat treatment apparatus in which works composed of, for example, LCD glass substrates are accommodated in multiple stages or in multiple stages and in multiple rows, as shown in FIG. At the time of the loading / unloading operation, only the small door 100 is opened and closed, and the workpiece is loaded and unloaded while maintaining the airtightness as much as possible.

However, such an operation port device requires a large number of independent small doors 100, requires an opening / closing mechanism such as a hinge 101, and requires a margin 102 for overlapping small doors. For this reason, there is a problem that the cost is high, the work loading pitch is large, the number of works to be loaded is reduced, and the size of the apparatus is large. Further, the operation for sequentially opening and closing a large number of small doors individually is complicated, and automation of opening and closing is not easy, which is not suitable for automation in a heat treatment apparatus or the like.

In such a conventional general apparatus, a seal belt roll is attached to a structure having a slit opening, and the slit opening can be moved while covering the opening with the seal belt. There has been proposed a movable slit device in which a structure is stopped so that a work can be easily taken in and out of a slit opening (Japanese Patent Laid-Open No. 7-1995).
267361). However, in this device, since the structure is provided with a slit and is always open, there is a problem that a device that requires airtightness between the inside and the outside requires a separate slit opening / closing mechanism.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems in the prior art and to provide an airtight and easily movable operation port device.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a structure and a structure which are movable in one direction and another direction of an opening of an article storage chamber. The one-sided winding member and the other-sided winding member supported by the body, the one-side end portion of the opening, and the one-side covering member and the other-side end portion locked to the one-side winding member; When the structure is moved, the one of the one-side covering member or the other-side covering member is unwound and the other one of the other covering member is unwound. In the operation port device configured to cover the opening with the one-side covering member and the other-side covering member while the thing is being wound, the structure is separated into one-side structure and the other-side structure. And is rotatably attached to the one side structure. A one-side guide member that guides the one-side cover member so as to cover the opening, and a second-side guide member that is rotatably attached to the other-side structure and guides the other-side cover member so as to cover the opening; An intermediate rotator rotatably attached to the other-side structure, and a second space having the first-side structure and the other-side structure connected to each other by a first space or a predetermined space larger than the first space. The one-side guide member, the other-side guide member, and the intermediate rotator are the one-side cover member and the other side in the first space. The cover member and the intermediate rotator come into contact with each other, and the one-side cover member and the intermediate rotator are arranged at a predetermined distance from each other at the second interval.

According to a second aspect of the present invention, in addition to the above, the surface of the intermediate rotating body is covered with a flexible material.

[0008]

1 and 2 show an example of the entire configuration of an operation port device to which the present invention is applied. FIG. 1 shows the right half part from the center of the symmetrical device. Operating port device is movable from the top in this example is a one-way frontage 2 is an opening of the article storage chamber 1 is an arrow Z ₁ direction and the other direction from the bottom in FIG an arrow Z ₂ direction under Upper structure 3 which is one side structure constituting the structured structure
And the other side structure and a lower structure 4, Volume up roller 6 as the first volume roll 5 and the other side winding member as one side winding member supported to, at the end portion of the Z ₁ direction of frontage 1 there upper wall 7 and the first volume-up roll 5 and the locked to the lower wall 8 and the MZ-up roll 6 is an end portion of the upper sheet 9 and Z ₂ direction side as locked the one side cover member the other side A lower sheet 10 is provided as a covering member, and when the upper and lower structures 3 and 4 are moved, one of the upper and lower sheets 9 and 10 is unwound and the other is wound up. It is configured to cover.

The upper structure 3 and the lower structure 4 are separated from each other as described above. The upper structure 9 is rotatably attached to the upper structure 3 and guides the upper sheet 9 so as to cover the frontage 2. An upper guide roller 11 as one side guide member and a lower guide roller 12 as a second side guide member rotatably mounted on the lower structure 4 and guiding the lower sheet 10 so as to cover the frontage 2, and mounted on the lower structure 4. A seal roller 13 is provided as an intermediate rotating body, and an air cylinder 14 is provided as an interval changing means.

The frontage 2 has a predetermined height in the upper and lower Z ₁ and Z ₂ directions so that a flat work W made up of LCD glass substrates or the like stacked in, for example, about 30 stages can be taken in and out. It is opened with a predetermined width in the X direction which is the horizontal direction. The main parts of the upper and lower structures 3 and 4 are respectively composed of upper and lower base plates 31 and 41 extending to the outside of the frontage width in the X direction and upper and lower brackets 32 and 42 attached to these.

In this embodiment, the lower base plate 41 is further extended in the X direction, and the slide bearing 1 is attached to its end.
The upper and lower structures 3 and 4 can be moved in the direction via the lower base plate 41 by fitting the linear shaft 16 with the fixed structure 5. However, the slide bearing 15 is replaced with the upper base plate 31 instead of the lower base plate 41.
Or both of the upper and lower base plates 31 and 41.

As shown in FIG. 3, the upper and lower winding rolls 5 and 6 are fixed with shaft portions 51 and 61 fixed at both ends to upper and lower brackets 32 and 42, and a spring (not shown). The body portions 52 and 62 are configured to be able to apply torque in the sheet winding direction by twisting and rotating the shaft portion.
In addition, as a winding member, in addition to such a mainspring type winding roll, a roller is rotated by a torque motor or the like,
A spiral spring may be formed by winding the covering member itself with bending spring properties.

As described above, the upper and lower sheets 9 and 10 are locked at one ends by the upper and lower winding rolls 5 and 6, respectively, and are wound therearound by the same length as the height of the frontage 2.
In the state shown by the solid line in FIG. 1, about half the length is unwound. These are always tensioned by the respective rolls 5 and 6 to which torque can be applied as described above. As the upper and lower sheets 9, 10, a flexible material having no air permeability such as a vinyl sheet is used. When the article storage chamber 1 is a heat treatment chamber, the article storage chamber 1 is made of a heat-resistant material such as a silicon rubber sheet reinforced with heat-resistant fibers.

As shown in FIG. 3, the upper and lower guide rollers 11 and 12 have shaft portions 11a and 12a whose both ends are rotatably supported by upper and lower brackets 32 and 42, and a body having upper and lower sheets 9 and 10 hung on the surface. Parts 11b and 12b are provided. Therefore, the roller and the sheet do not slide, and the roller rotates to guide the sheet. Upper and lower guide rollers 1
Since the sheets 1 and 12 need to guide the sheets 9 and 10 so as to cover the frontage 2, they are arranged so that the guide surfaces are along the wall surfaces of the openings. The rotatable structure of the upper and lower guide rollers with respect to the upper and lower brackets includes a shaft portion 11.
a, 12a may be fixed to the upper and lower brackets 32, 42, and the body portions 11b, 12b may be rotatable with respect to the shaft portion.

The seal roller 13 is, as shown in FIG.
Shaft 1 whose both ends are rotatably supported by lower bracket 42
3a and body 13 made of a flexible material such as sponge material
b. If the body is made of such a flexible material, the upper and lower sheets 9, 10 and the upper and lower guide rollers 11,
Even if 12 is a hard material, the seal roller 13 and the upper and lower sheets 9 and 10 can be easily brought into contact with an appropriate pressure. However, when the sheets 9 and 10 are made of a soft material having a certain thickness, or when the surfaces of the rollers 11 and 12 are made of a soft material, the seal roller 1 is used.
The surface of No. 3 may be hard.

In this embodiment, the seal roller 13 is mounted on the lower bracket 42. However, the other structure on which the seal roller 13 as the intermediate rotating body is mounted is the upper structure 3, and the seal roller 13 is the upper structure. You may make it attach to the body 3. In addition, as a structure rotatable with respect to the lower bracket of the seal roller 13, the shaft portion 13a may be fixed to the lower bracket 42 and the body portion 13b may be rotatable with respect to the shaft portion.

The air cylinders 14 are provided on both sides in the width direction X, and are attached to the lower base plate 41.
And a bracket 31 fixed to the rod 14b and the upper base plate 31.
The upper and lower structures 3, 4 are connected by connecting the upper and lower structures a. Then, by expanding and contracting the rod 14b, these intervals are set as, for example, the upper and lower base plates 31, 41.
Is the first distance D ₁ or the second distance d wider than the first distance D ₁ .
The interval can be changed so that the interval D ₂ = D ₁ + d. As the interval changing means, another suitable reciprocating mechanism such as a solenoid can be used instead of the air cylinder.

The linear shaft 16 includes the upper and lower brackets 1
It is supported by upper and lower wall surfaces 7, 8 via 7, 18. A drive shaft 20 to which a drive pulley 19 is fixed is rotatably supported by the upper bracket 17. The drive shaft 20 is rotated by a rotating device (not shown). Lower bracket 1
A support shaft 21 is extended from 8, and a driven pulley 22 is rotatably supported by the support shaft 21. A timing belt 23 is wound around the pulleys 19 and 22, and an intermediate portion thereof is locked by an auxiliary bracket 43 of the lower structure 4. As a result, it is possible to move the upper and lower structures 3,4 in that direction by the movement of the Z ₁ -Z ₂ direction of the timing belt 23.

If the drive shaft 20 is rotated by a servomotor or a stepping motor in such a mechanism, the upper and lower structures 3, 4 can be easily stopped at any of a large number of positions by teaching, and the operation controllability is improved. Very good. However, if there are not many stop positions, a sensor such as a photomicro and a motor with a brake may be used. Further, as the moving mechanism of the structure, other appropriate moving mechanisms such as a wire pulling mechanism in which a wire is wound around a pulley or a ball screw feed mechanism can be used instead of the timing belt.

In such a structure, the upper and lower guide rollers 11 and 12 and the seal roller 13
₁ , the upper and lower sheets 9, 10 and the seal roller 13
1, 2 (a) and 3, and at the second interval D ₂ = D ₁ + d, the upper sheet 9 and the seal roller 13 are in contact with each other. As shown in FIG. 2 (b), they are arranged at related positions separated by a predetermined distance d.

That is, as shown in the drawing, the upper guide roller 11 is configured such that the portion of the upper sheet 9 to be guided by the upper guide roller 11 protrudes toward the seal roller 13 from the portion of the upper sheet 9 wound on the upper take-up roll 5 and seals. The relative positions of the rollers 11 to 13 are determined so that the upper sheet 9 side portion of the roller 13 projects toward the upper sheet 9 from the lower sheet 10 wound around the lower take-up roll 6. The predetermined interval d serves as an operation port 24 for taking in and out the work.

As shown by a two-dot chain line in FIG. 3, the side recess 25 formed by the upper and lower sheets 9 and 10 and the seal roller 13 is reduced, and the side gap generated at both ends in the width X direction of the frontage 2 is reduced. Rollers 11 to 13
Are preferably arranged as linearly as possible in the Z ₁ -Z ₂ direction. Also, in order to reduce the side recess 25, it is desirable to reduce the diameter of the seal roller 13. In this case, if the diameter is reduced, the shaft 13
Although the diameter of “a” also becomes smaller and the bending rigidity and the like of the roller becomes smaller and the strength decreases, the diameter of the seal roller 13 can be reduced because the sealing roller 13 does not receive the bending force or the like due to tension from the upper and lower sheets 9 and 10. In this case, the combination of the rollers is advantageous in improving the sealing performance.

[0023] Although not particularly been miniaturized seal roller 13 as shown by the solid line in FIG. 3 in this example, as shown by two-dot chain line in FIG., The seal roller 13 _{131-134 3} example, three odd A plurality of individual arrangements may be used to further improve the sealing performance at both ends. In the illustrated example, the seal rollers 13 ₁ and 13 ₂ are connected to the lower bracket 4.
2 will be attached to mounting 13 ₃ on the bracket 32.

The operation port device as described above is used as follows. Here, in order to make the description concrete, an example in which the article storage chamber 1 is the inside 2 of a constant temperature bath for heat-treating a work W made of an LCD glass substrate will be described. The tank 1 of the thermostatic bath, have been loaded from W ₁ as shown in FIG. 2 (b) to the work loading device and a work W is not shown W _{1 5} to W _{3 0} to example 30 stages about multistage through, illustrated Hot air of about 230 ° C. is circulated by a blower or a heater arranged in an air conditioner that does not work, and the work W is heated. In the state of FIG, the workpiece W _{1 5} of the 15 stage has elapsed a predetermined heat treatment time, predetermined between the upper sheet 9 covering the seal roller 13 and the upper guide roller 11 for the workpiece exchange The operation port 24 is formed with a gap d therebetween.

Thus, the work W which has completed the heat treatment
₁₅ is carried out from the operation port 24 by a robot hand or the like (not shown), and a new work is carried in. When the frontage 2 is provided on both sides in the front and rear Y direction,
The upper and lower structures 3, 4 and the like are also provided on both sides in the Y direction, and a work is taken out from one frontage and a new work is put in from the other frontage.

[0026] out of the work of the 15-stage portion is completed, shrinkage rod 14b which has grown of the air cylinder 14, the distance D ₂ is the interval as indicated by a solid line from the two-dot chain line in FIG. 1 turned down on the base plate 31 becomes D _1, the predetermined distance d is 0. At this time, when the shaft portion 51 of the upper take-up roll 5 is pushed down by the upper base 31, the upper sheet 9 whose upper end is locked is unwound while receiving tension by the torque of the body portion 52, and As a result, it comes into contact with the wall surface of the frontage 2 and is drawn downward along the same.

In this manner, the upper sheet 9 is moved from the upper winding roll 5 by the same length as the distance by which the upper guide roller 11 is lowered.
Is unwound, so that the sheet and the wall surface do not slide, and the upper sheet 9 satisfactorily maintains the contact state without affecting the portion of the upper sheet 9 that has been in contact with the front wall surface. The protruding portion does not slide on the front wall surface, but has a longer length so that it can be attached to the front wall along the wall surface. As a result, the predetermined distance d disappears and the operation port 24 is closed, and the frontage 2 is almost completely closed in a good state as shown in FIGS. 2 (b), 1 and 3.

[0028] Once out of the 15 stages of the work is completed, and FIG. 2 (b) in the work W _{1 6} of the 16 stage indicated by the two-dot chain line at a distance p of the future one pitch is processed. Therefore, a rotating device (not shown) rotates the drive shaft 20 as necessary, rotates the drive pulley 19 in the direction of the arrow to rotate the timing belt 23, and moves the lower structure 4 through the auxiliary bracket 43 by one pitch p. The upper structure 3 is raised by the same p via the air cylinder 14 at the same time.

When the upper and lower structures 3 and 4 are lifted in this way, the shaft portions 51 and 61 of the upper and lower winding rolls 5 and 6 are pushed up, so that the upper and lower sheets 9 and 10 whose upper and lower ends are locked, respectively. While being taken up and unwound while receiving tension by the torque of the body portions 52 and 62, the length is shortened and extended in the vertical direction along the wall surface of the frontage 2 by the upper and lower guide rollers 11 and 12, respectively. Therefore, also at this time, the seat and the wall surface do not slide, and the two are maintained in a good contact state, and the operation port 24 is closed and the frontage 1 is completely closed.

By the way, instead of the configuration of the present invention, 1
Using only a pair of upper and lower winding rolls, the position of the operation port is moved by the winding and unwinding, and the operation port is opened and closed by changing the winding amount and the unwinding amount of the roll. Although an apparatus is also conceivable, in this case, as shown in FIG.
The gap between the front face and the wall surface 2a changes, so that a gap δ is generated in the side having the smaller winding amount, and the front seal performance deteriorates. Attempting to make this contact would complicate the mechanism and increase product costs. Also, the position of the operation port 24 formed between the rolls is shifted by the difference between the winding amounts of the upper and lower rolls.

There is no problem when the operation port 24 is slightly opened, but as shown in FIG.
If the operator tries to move the position while the operation port is completely closed by touching 0, the linear velocities of the contact portions of the upper and lower sheets become opposite directions as shown by the arrows, and the two parts slide and a large resistance is caused. Is generated, and smooth movement is hindered, and dust is generated at sliding portions, so that a clean work processing environment cannot be maintained. If a gap is provided even at the time of closing in order to avoid this, the sealing performance is reduced. The upper and lower guide rollers 11, 12 whose diameters do not change as shown in FIG.
Is provided, the upper and lower sheets and the wall surface 2a can be brought into contact with a constant distance between them, but when the operation port is closed and the upper and lower sheets are moved, the linear velocity directions of the respective sheets become opposite. It is inevitable that sliding resistance will occur.

On the other hand, in the apparatus of the present invention, as shown in FIG.
When moving in the opposite directions while winding and unwinding, the rotatable seal roller 13 is interposed between the upper and lower winding rolls 4 and 5 in addition to the upper and lower guide rollers 11 and 12. The upper sheet 9 and the seal roller 13 and the lower sheet 10
Both contact portions of the seal roller 13 and the seal roller 13 have the same rotational tangential speed for the seal roller. As a result, it is possible to obtain a good contact movement state without sliding between them. As a result, as described above, when the seat is moved, the operation port can be completely closed, and the frontage can be completely closed by the sheet.

When the upper and lower structures 3 and 4 complete the movement of one pitch p and the heat treatment time of the work W ₁₆ elapses, the air cylinder 14 is operated, and the rod is extended by d and the upper base plate 31 is extended. Rises and the interval D ₁ becomes the interval D ₂ ,
At a predetermined interval d, the operation port 24 opens. At this time, when the shaft portion 51 of the upper take-up roll 5 is pushed up from the upper base 31, the upper sheet 9 whose upper end is locked is taken up by the tension caused by the torque of the body portion 52, and the upper guide roller 11 causes the frontage. The length is shortened while maintaining the sealing property with the wall surface of No. 2.

When the operation port 24 is opened, this time the work W ₁₆
Is taken out and another new work is put in. In the constant temperature bath of this example, such a process is repeated, and the work of each stage is continuously heat-treated. In FIG. 1, the upper and lower structures 3, 4 ascend as shown by a two-dot chain line, and the uppermost work W
₃ when ₀ is processed, but the upper and lower structures 3,4 is lowered to the position of the lowermost workpiece W ₁ as shown by two-dot chain line, to an arbitrary position including a maximum movement of the structure in this case Is carried out in exactly the same manner as before, and during that time, the closed state of the frontage by the upper and lower sheets is favorably maintained. Therefore, regardless of the size of the loading pitch of the work, the work at each stage can be freely carried out and carried in. Further, it is possible to easily cope with a case where the work loading pitch is not the same or a case where the work loading device changes and the work loading pitch changes.

Although an example in which the frontage is covered with a single sheet has been described above, the frontage can be double- or triple-covered by forming the frontage in a frame shape. Further, in order to further improve the sealing property of the frontage, an adsorbing mechanism that can adsorb the sheet edge may be provided on a wall surface around the frontage.

[0036]

As described above, according to the present invention, one-side and other-side winding members are attached to a movable structure, and one-side and other-side covering members are locked to these members, respectively. In the operation port device configured to cover the opening while unwinding and winding, respectively, the structure is separated into one side and the other side structure, and the one side and the other side guide member are rotatable to each structure. Since the one-side and the other-side covering members are guided so as to cover the opening by being attached, regardless of the amount of winding of the covering member around the winding member that changes with the movement of the structure, it is always in the direction facing the opening. The covering member can be guided at the same position. As a result, the covering member can be wound and unwound in a state of good airtightness with respect to the opening.

Also, since the intermediate rotating body is rotatably attached to the other side structure, the intermediate rotating body is brought into contact with the other side covering member guided and guided by the other side guiding member to be wound or unwound. It is possible to cover the opening between the other side covering member and the intermediate rotating body while rotating the rotating body in contact. Also, the intermediate rotator is brought into contact with or separated from the one-side cover member guided and wound or unwound by the one-side guide member, and the intermediate rotator is brought into contact with the intermediate rotator in the same direction as described above while rotating. To cover the entire opening and eventually cover the entire opening, or to separate the one-side covering member and the intermediate rotating body so that the opening is an open portion and can be used as an operation port. Becomes possible.

When the intermediate rotator is brought into contact with the one-side and the other-side cover members, the intermediate rotator is made rotatable, so that the one-side and the other-side cover members are rotated from opposite directions as described above. Are rotated in the same direction, so that the intermediate rotator does not slide when the intermediate rotator rotates in contact with the cover member. As a result, even in a state where the cover member and the intermediate rotating body are in contact with each other to completely close the opening,
The covering member can be smoothly wound and unwound. Further, dust generation in the sliding portion is prevented, and for example, one of the clean processing conditions required for the heat treatment of the liquid crystal glass substrate.
Can meet one.

In addition, an interval changing means is provided to connect the one-side and the other-side structures so that these intervals can be switched to the first interval or the second interval wider than the first interval by one. Through the side structure, change the distance between the one side guide member attached to these and the intermediate rotating body,
Therefore, it is possible to change the distance between the one-side covering member and the intermediate rotating body. As a result, as described above, it is possible to switch between a state in which the opening is completely closed and a state in which the operation port portion is open.

The one-side and other-side guide members and the intermediate rotating body are brought into contact with each other at the first interval, and the one-side and the other-side covering member and the intermediate rotary body are brought into contact with each other at the first interval. Since the intermediate rotating body is disposed at a position separated from the intermediate rotating body by a predetermined distance, the opening is entirely covered by the covering member via the intermediate rotating body at the first interval, and In the opening, the operation port between the one-side cover member and the intermediate rotating body can be opened to cover another portion. As a result, it is possible to switch between the completely closed state of the opening and the opened state of only the operation port as described above.

Then, when the operation port is open, it is possible to take out and put in the article stored in the article storage chamber in the opening by using this part, for example, to heat-treat the article.
Further, the structure can be moved, and the cover member can be wound or unwound by moving the structure, and the length of both can be changed to change the position of the operation port portion. An arbitrary article can be taken in and out by matching the position of an arbitrary article to be loaded on the.

According to such an operation port device, the covering state of the covering member can be changed while the opening is closed, so that the inside airtightness can be maintained well.
Further, since there is no need to provide a door at the opening, the operation of taking in and out of articles is easy, and automation thereof is also easy. Furthermore, since the position of the operation port portion can be changed by winding / unwinding the cover member, the position can be selected in a stepless manner. It can be as small as required. Therefore, the size and cost of the article storage room can be reduced. Further, even when the loading pitch of the articles is changed or the articles are loaded at a large pitch or a partially different pitch, it is possible to easily cope with these conditions.

According to the second aspect of the present invention, since the surface of the intermediate rotating body is formed so as to be covered with a flexible material, the intermediate rotating body and the guide member can be easily brought into contact with each other via the covering member. An appropriate contact pressure can be obtained. In this case, since the intermediate rotating body receives a uniform contact pressure from the guide members on both sides, it does not receive a large non-uniform external force.
As a result, the thickness of the flexible material can be increased, and it becomes easy to obtain an appropriate contact pressure as described above.

[Brief description of the drawings]

FIG. 1 is a front view showing an example of the overall configuration of an operation port device to which the present invention is applied.

FIGS. 2A and 2B are side views of the device, wherein FIGS. 2A and 2B show a closed state and an opened state of an operation port, respectively.

FIG. 3 is an enlarged view of a roller portion of the device.

FIGS. 4A to 4C are partial explanatory views of an apparatus to be compared with the apparatus of the present embodiment.

FIG. 5 is an explanatory view showing an example of a part of a conventional operation port device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Article storage room 2 Frontage (opening) 3 Upper structure (one side structure, structure) 4 Lower structure (other side structure, structure) 5 Upper winding roll (one side winding member) 6 Lower winding roll ( 7 Upper wall surface (one end) 8 Lower wall surface (the other end) 9 Upper sheet (one side covering member) 10 Lower sheet (the other side covering member) 11 Upper guide roller (one side) Guide member) 12 lower guide roller (other guide member) 13 seal roller (intermediate rotating body) 14 air cylinder (interval changing means) D ₁ first interval D ₂ second interval d predetermined interval Z ₁ , Z ₂ one side, The other side

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-71851 (JP, A) JP-A-4-29753 (JP, A) JP-A-62-242749 (JP, A) JP-A-9-97 72667 (JP, A) JP-A-10-22293 (JP, A) JP-A-7-253279 (JP, A) JP-A 63-31800 (JP, U) JP-A 58-128967 (JP, U) Hira 4-48400 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F27D 1/18 B65G 49/00

Claims (2)

(57) [Claims] 1. A structure that is configured to be movable in one direction and another direction of an opening of an article storage chamber, a one-side winding member and the other-side winding member supported by the structure, and the one-way side of the opening. And the other side covering member locked to the other end portion and the other side winding member, and the other side covering member locked to the end portion and the one side winding member. When moved, any one of the one-side covering member or the other-side covering member is unwound and the other is wound up while opening the opening with the one-side covering member and the other-side covering member. In the operation port device configured to cover, the structure is separated into one side structure and the other side structure, and the one side is rotatably attached to the one side structure and covers the opening. A one-side guide member for guiding the side cover member, The other-side guide member rotatably mounted on the other-side structure and guiding the other-side covering member so as to cover the opening; an intermediate rotating body rotatably mounted on the other-side structure; A space changing means for connecting the side structure and the other side structure and changing the space so that the space is a first space or a second space wider than the first space by a predetermined space; The guide member, the other-side guide member, and the intermediate rotator are in contact with the one-side cover member, the other-side cover member, and the intermediate rotator in the first interval, and the one side in the second interval. The operation port device, wherein the cover member and the intermediate rotating body are arranged at a relational position separated by the predetermined distance. 2. The operation port device according to claim 1, wherein a surface of the intermediate rotator is covered with a flexible material.