JP3653223B2 - Smoke-proof shutter having a center column that can be bent and extended and the center column - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a shutter installed in an opening of a building, and in particular, a smoke-proof shutter having a flexible column that can be used to stand upright and hold an end of the shutter body when a plurality of shutter bodies are arranged in the opening, and the shutter Concerning the middle pillar.
[0002]
[Prior art]
This type of shutter is generally used when a plurality of shutter bodies are arranged in the opening and the end of the shutter body is standing and held by a middle pillar interposed at the intermediate position in the width direction of the opening. For example, as is typically seen in lightweight shutters, U-shaped guide grooves for opening / closing guides at the shutter body end portions are arranged back to back, for example, in an H-shaped cross section, the length of the opening height of the opening The upper and lower ends are installed by detachably engaging and erecting on the upper and lower surfaces facing the opening, and the shutter body end can be received and guided to open and close the shutter body. , While being able to stand upright in its fixed position at the time of closing, the opening is opened by removing and removing it at the time of opening.
[0003]
[Problems to be solved by the invention]
In this case, when the shutter body is opened and closed, it is necessary to install and remove the central pillar, which is troublesome. On the other hand, for some shutters such as smoke-proof shutters, the Ministry of Construction Notification (No. 2564) When the opening width of the opening exceeds 5m, it is required to install a column with a performance equivalent to or better than the Type B fire door, for example, it is required to install a middle pillar, and thus generally exceeds 5m There is a problem that smoke-proof shutters cannot be installed without using a middle pillar in pavements or the like that are usually set to have an opening width.
[0004]
The present invention has been made in view of the circumstances, and the problem to be solved is, firstly, in conjunction with the opening and closing of the shutter body, it forms a middle column that holds the shutter body end upright when it is closed, It can be folded at the time of opening to eliminate the installation and removal when opening and closing the shutter body, and can be used as a flexible column that can be used in place of the central pillar required for the above smoke-proof shutter. To provide a smoke-proof shutter having a pillar, and secondly to provide a middle pillar of the shutter.
[0005]
[Means for Solving the Problems]
According to the first aspect of the present invention, in the first aspect of the invention, the middle column that allows the shutter body of the shutter to stand upright and hold in a fixed position is provided above the opening where the shutter body is installed, for example, a shutter case or a building frame. Between the lower end of the shutter body (may be referred to as a lower end portion or a portion near the lower end), for example, a shutter component or a seat plate (sometimes referred to as a drained seat plate or an end slat) at the lower end. It is configured to be able to bend and stretch so as to form a bending and stretching link mechanism (may be called a bending and stretching link or a bending and stretching link device) that bends and stretches into a V-shape, an inverted W-shape, etc. According to the ascent and descent, it is bent and stored at the time of opening, and is extended and raised at the time of closing so that the end of the shutter body can be held upright. A shutter having a central column that is held upright when the shutter is closed in conjunction with opening and closing of the shutter, and that can be folded when the shutter is opened, with the central column above the opening and the lower end of the shutter body. Each of them is made up of an even number of middle pillar bars fixed in the middle and pivotally connected in the middle, and has an inverted V shape and an inverted W shape between the upper part of the opening and the lower end of the shutter body. By bending and stretching the link mechanism so that it can be bent and extended freely, both the bending storage above the opening at the time of opening and the extension standing of the shutter body at the time of closing are performed in conjunction with the opening and closing movement of the shutter body. It is a smoke-proof shutter having a flexible central column characterized by being made freely.
[0006]
In addition to the above, the invention described in claim 2 is configured so that the bending / extension link mechanism is arranged before and after the end of the shutter body so as to further securely hold the end of the shutter body by the middle pillar. 2. The smoke-proof shutter having a bendable / extendable middle pillar according to claim 1, wherein the middle pillar is used for sandwiching the front and rear of the end portion of the shutter main body by being arranged in a pair. .
[0007]
In addition to the above, the invention according to the third aspect of the present invention can reliably hold the adjacent shutter body end portions upright, and can stand up the shutter body end portions that are closed regardless of whether the adjacent shutter body ends. By arranging the above-mentioned bending and stretching link mechanisms at the respective end portions of the adjacent shutter main bodies so that the holding can be performed independently, the above-mentioned middle pillar is used for individual standing holding of the shutter main body end portions. The smoke-proof shutter having a bendable / extendable middle column according to claim 1.
[0008]
In addition to the above, the invention described in claim 4 is capable of swinging back and forth of the middle column by an external force such as wind pressure when both of the adjacent shutter bodies are closed in addition to the above. In order to solve this problem and improve the certainty of holding up the shutter body end, the above-mentioned middle pillar for holding the shutter body at the stand up is used when the adjacent shutter body is extended and extended. 4. The smoke-proof shutter having a bendable / extendable middle column according to claim 3, wherein the smoke-proof shutter can be fitted or engaged with each other.
[0009]
In addition to the above, the invention according to the fifth aspect of the present invention, in addition to the above, is to hold the stand up at the end of the shutter body by integrating the central pillars when both the adjacent shutter bodies are closed. In order to improve the reliability, it is possible to lock the middle pillars for holding the individual ends of the shutter main body at the intermediate positions in the longitudinal direction when the adjacent shutter main body is extended and extended. 5. A smoke-proof shutter having a bendable middle pillar according to claim 3 or 4.
[0010]
In addition to the above, the invention according to claim 6 is more than 5 m as an intermediate column replacing the fixed intermediate column by fixing the lower end of the intermediate column to the floor of the opening when the shutter body is closed. In order to install a smoke-proof shutter without dividing the opening in a store or the like having an opening width, the middle pillar can be fixed to the floor of the opening when the shutter body is closed. The smoke-proof shutter having a bendable / extendable middle column according to claim 1, 2, 3, 4, or 5.
[0011]
The invention according to claim 7 shows a form of the shutter body, and the shutter body includes a seat plate that also serves as a ceiling closing plate that closes a receiving hole of a storage portion through which the shutter body is inserted. A smoke-proof shutter having a bendable middle pillar according to claim 1, 2, 3, 4, 5 or 6.
[0012]
According to the eighth aspect of the present invention, in accordance with the second problem, in order to provide a middle pillar of these smoke-proof shutters, the shutter main body end when the shutter main body is closed in conjunction with opening and closing of the shutter main body. Is a central pillar of the shutter that can be folded up when opened, and is fixed to the upper part of the opening and the lower end of the shutter body so as to be rotatable, and evenly connected in the longitudinal direction. Opening and closing of the shutter body is made by a bending / extending link mechanism which is composed of a middle pillar bar material and can be freely bent and stretched between the upper part of the opening and the lower end of the shutter body. The smoke-proof shutter can be bent and stretched, and can be flexibly housed in the upper part of the opening at the time of opening in conjunction with the movement and can be extended and extended at the time of closing. It is intended.
[0013]
The invention according to claim 9 shows the form of the middle pillar, and the middle pillar is bent and extended from the end of the shutter body in the lateral direction in the plane. The smoke-proof shutter according to claim 8, wherein the smoke-proof shutter is a flexible column.
[0014]
The present invention uses these as the gist of the invention and is a means for solving the first or second problem.
[0015]
If the shutter body in the smoke-proof shutter of the present invention can be installed so as to open and close in the vertical direction and partition the opening, for example, a shutter slat as a shutter component is connected in a vertically rotatable manner. As a shutter component, a wide panel can be folded up and down and connected to the storage unit at the time of opening. For example, the shutter is wound on a winding shaft installed in the storage unit. In the form of folding, storing in a bellows shape on the opening or in the direction intersecting the opening along the branch guide rail installed in the storage, and opening along the guide rail installed in the storage It can be of various types, such as one that is rotated in the crossing direction and stored as a series, and the relationship between the upper end of the upper end of the central pillar is, for example, as described above, such as the ceiling surface, The lintels installed in the shutter body receiving holes such as the utter case, the brackets provided in them, the support frames installed in the shutter case and the storage part on the ceiling finish surface, the brackets provided in these, the upper floor concrete slab in the storage part, etc. This can be done by supporting or fixing the upper end of the flexure-extension link mechanism above the opening of the building frame or the bracket provided on this building. For example, by supporting or fixing to the lower end portion of the shutter main body, which can bend and extend the bending / extension link mechanism by vertically moving up and down vertically at the opening, such as a shutter component, a seat plate, etc. located at the lower end of the shutter body Can be done.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described in more detail with reference to the following drawings. In FIGS. 1 to 8, A is a smoke-proof shutter having a middle pillar, 1 is a guide rail disposed at both ends of the opening, 2 is a shutter body, Reference numeral 3 denotes a freely-extendable middle column, and 4 denotes a storage portion for the shutter body 2. The shutter A includes a plurality of shutter bodies 2 arranged in parallel in the opening and a middle column 3 disposed at an intermediate position in the opening width direction. It is assumed that the end portions of the adjacent shutter main bodies 2 can be held upright at a fixed position simultaneously or individually.
[0017]
That is, in this example, the smoke-proof shutter A having a middle pillar is capable of rotating a shutter slat up and down as a shutter component 21 which is common in, for example, a lightweight shutter from the various shutter main bodies 2 and their storage forms. It is connected to a winding shaft 45 installed in the storage section 4 above the opening and is to be wound and stored so as to be manually opened / closed or electrically opened / closed. For example, two shutters are arranged in parallel in the opening and arranged in parallel in the width direction of the rotating shaft. For example, the shutter body 2 can be wound around a winding shaft 45 having a different diameter for each shutter body 2. The opening and closing speeds are different between the two so that they can be used as smoke-proof shutters.
[0018]
At this time, the middle pillar 3 is configured such that the shutter body end is held upright when the shutter body is closed in conjunction with opening and closing of the shutter body, and is folded at the time of opening. It is a bending / extension link mechanism that can be freely bent and stretched between the lower end of the shutter body 2 in an inverted V shape, an inverted W shape, etc. In this example, the bending / extension link mechanism is connected to the end of the shutter body 2. By arranging the front and rear to make a pair, the middle column 3 is used for sandwiching the front and rear of the end of the shutter body 2, while the bending and stretching link mechanism is also disposed at each end of the adjacent shutter body 2. As a result, the middle pillar 3 is used for individually standing and holding the end of the shutter body 2, that is, the end of the adjacent shutter body 2 can be individually held upright in a fixed position.
[0019]
In other words, the above-described bending / extending link mechanism is configured to be fixed to the upper part of the opening and the lower end of the shutter main body 2 so as to be rotatable, and to be configured by an even-numbered middle column bar material 31 in the longitudinal direction that is rotatably connected in the middle. Thus, it is assumed that it is arranged in an inverted V shape, an inverted W shape, etc. between the upper part of the opening and the lower end of the shutter body 2 so as to be freely stretchable. Both the bent storage above the opening and the extension standing of the shutter body 2 standing up at the time of closing can be freely performed. At this time, in the present example, the even-numbered intermediate column bar member 31 has an intermediate rotation in the longitudinal direction so as to straddle one end of each intermediate column bar member 31, that is, outside the non-shutter main body side. A joint member 32, for example, a joint plate is interposed in the front-rear direction, and the middle column bar material 31 and the joint member 32 are pivotally fixed to each other at the overlapping portion with the joint member 32, respectively. Thus, in the connecting portion of the middle column bar material 31, for example, when the middle column bar material 31 having a relatively large thickness is used so as to ensure the strength as the middle column 3, these are directly overlapped with each other. Are connected to each other to form a step in the middle of the middle column 3 to prevent the portion from separating from the shutter main body 2, and the middle column bar material 31 is arranged in series without a step, Proximity In addition, in this example, the end of the shutter body 2 in the present example can be held in a series and can be held without a gap. It can be as reliably as possible over the entire length in the longitudinal direction.
[0020]
The bending-extension link mechanism of the present example is formed by dividing the height of the middle pillar 3 into equal parts in this example, for example, two middle pillar bar members 31 that are relatively thick so as to ensure strength. Used, these two middle pillar bars 31 are connected to each other via a joint member 32 so as to be rotatable, and for example, a bent V-shape is bent and stretched so that it can be suitably used for a standard height opening. The bending / extension link mechanism has an upper end (may be referred to as a portion near the upper end) above the opening, for example, a lintel 42 that defines a receiving hole 41 through which the shutter body 2 is inserted into the storage portion 4. The support 42 is fixedly supported by a support frame 43 or a concrete beam, and is pivotally fixed to the support frame 43 via a bracket 33. The lower end (may be referred to as a portion near the lower end) is the lower end of the shutter body 2, for example, the shutter body 2 In this example, the receiving hole 41 is blocked. In this way, the seat plate 22 also serving as a ceiling closing plate is also pivotally fixed at a position perpendicular to the pivotable fixed position of the upper end via the bracket 33, and the middle pillar 3 In this example, the bending and extension of the shutter body 2 can be performed in a lateral direction from the end of the shutter body 2 to bendable and stretchable. In the middle pillar 3 of this example, which is used for holding the end individually, the bending link mechanism is arranged so as to be able to bend and stretch so as to form a pair before and after each end of the adjacent shutter body 2. Each end of the shutter body 2 is clamped.
[0021]
At this time, the pivotable fixing at the upper end of the bending / extending / linkage mechanism of this example is not limited to the bracket 33 and the inner bracket 34 that does not obstruct the passage of the adjacent shutter main body 2 by being H-shaped, for example. It is arranged so as to be interposed between the front and rear bending link mechanisms across the bending and stretching link mechanism side. A total of four fixed parts for sandwiching the front and rear are integrated so that the work and positioning can be easily performed.
[0022]
In the present example, the middle pillar 3 for holding the individual uprights at the end of the shutter main body 2 can be fitted or engaged with each other when the adjacent shutter main body 2 is closed and extended. In this example, the reciprocal engagement is performed so that the front and rear link mechanisms are adjacent to each other. A protrusion 35 is provided on the middle column bar member 31 of each bending / extension link mechanism so as to engage the winding, and the protruding position of the protrusion 35 is shifted back and forth between adjacent ones. The above-described reciprocal engagement is performed for each bending / extension link mechanism, thereby eliminating as much as possible the possibility of swinging of the middle column 3 when the adjacent shutter body 2 is closed. Improve the reliability of standing upright at the two ends. .
[0023]
In addition, the central pillar 3 for holding the individual erections at the end of the shutter body 2 in this example can be locked to each other at an intermediate position in the longitudinal direction when the adjacent shutter body 2 is closed and extended. In this case, the lock uses a locking device 36 provided at a predetermined height position of the middle pillar 3, thereby integrating the middle pillars 3 when both the adjacent shutter bodies 2 are closed. The reliability of standing upright holding of the two end portions is improved.
[0024]
The lock device 36 of this example uses a simple lock such as a hook metal, a latch, a catch metal, etc., and in this example, a hook metal is used, and its bracket is attached to one of the middle pillars. 3, lever fittings are respectively arranged on the other middle pillar 3, and the locking device 36 is operated when both the middle pillars 3 are extended upright so that both the middle pillars 3 are integrated. In the middle pillar 3 of this example for holding the shutter body 2, the locking device 36 is installed on both or one of the front and rear bending link mechanisms, and in this example, the locking device 36 is provided. It is assumed that it is arranged in a bending / extension link mechanism of the middle pillar 3 located on the front and rear sides of the shutter body 2, for example, on the indoor side.
[0025]
Further, the middle pillar 3 of this example can be fixed to the floor of the opening when the shutter body 2 is closed. In this example, the middle pillar 3 is fixed between the middle pillar 3 and the floor surface. It is assumed that the fixing device 37 for fixing the middle pillar 3 is used, so that the lower end of the middle pillar 3 is fixed to the floor of the opening when the shutter body 2 is closed. As a fixed attachment with the performance of the above, the middle pillar 3 is equivalent to this, and a smoke-proof shutter can be installed without using a conventional middle pillar or the like with an opening width exceeding 5 m. .
[0026]
The fixing device 37 of this example uses, for example, a simple drop such as a round drop or a French drop. In this example, a French drop is used. The shutter body 2 is fixedly mounted on the floor surface by being embedded in the floor surface and operated to lift the shutter body 2 when the shutter body 2 is closed. In the middle pillar 3, the fixing device is installed on both or one of the front and rear bending link mechanisms. In this example, the fixing device 37 is installed on one of the front and rear sides of the shutter body 2, for example, on the indoor side. It is assumed that it is installed on the floor surface below the bending / extension link mechanism of the middle pillar 3 located at the position immediately below.
[0027]
In the figure, 44 is a guide pulley that bends and guides the shutter main body 2 to the winding shaft 45 in the storage unit 4, and 46 is a predetermined in the lintel 42, the middle column 3, etc. so that the shutter A can be a smoke-proof shutter. The smoke barrier installed at the location.
[0028]
FIGS. 9 to 12 mainly show other examples of the shutter main body 2 and the middle pillar 3, respectively. FIGS. 9 and 10 show four parts divided into four parts by dividing the height of the middle pillar 3. FIG. This is an example in which a bending / extension link mechanism is configured using the middle pillar bar material 31, and in this example, the bending / extension link mechanism is rotatably fixed to the upper part of the opening and the lower end of the shutter body 2. On the other hand, in this example, for example, the middle column bar material 31 having a different length is connected to each other in the middle of the three adjacent positions so as to be rotatable, and the bending / extension link mechanism is formed into an inverted W shape or the like. In this example, the middle pillar 3 is configured to be able to be bent and stretched. At this time, the height of the shutter body 2 is set to, for example, several m by making the bending and stretching link mechanism bendable and stretchable in an inverted W shape. In other words, the central pillar 3 that can be flexed and stretched is also used for the one having a high opening. It is possible to location.
[0029]
FIG. 11 shows that the shutter body 2 is individually provided for each pair of horizontal beams up and down by providing, for example, an X-shaped link 23 between a pair of horizontal beams forming the shutter component 21. Constructed to be telescopically connected, for example, retracted and stored in the upper direction, extended downward and closed, and the horizontal rails are divided into upper and lower parts and connected to each other by hinges, for example, not shown The guide rail is folded in the direction intersecting the opening and folded and stored, and is similarly extended and closed. At this time, the middle pillar 3 can be suitably used at a standard opening height, for example. This is an example that can be bent and stretched like an inverted V-shape as in the above example.
[0030]
FIG. 12 shows the shutter body 2 that is hinged to a glass frame that forms the shutter component 21 and can be folded into a bellows shape. For example, it can be folded into a bellows shape by a branch guide rail (not shown). In this example, the middle pillar 3 is similarly bent and stretched in the above-described inverted V shape.
[0031]
Since the remainder of FIGS. 9 to 12 is basically the same as the above example, the same reference numerals are assigned and redundant description is omitted.
[0032]
The example shown in the figure is as described above. However, the shutter body ends arranged in parallel with the opening are arranged in a series of three or more, and the adjacent shutter body ends stand in place with the above-mentioned extension and extension pillars. It is made to hold, a bending / extension link mechanism is arranged on one side of the front and back of the shutter body, and it is used as a middle pillar for holding the shutter body upright by the one bending / extension link mechanism, one shutter body of the adjacent shutter body The central pillar installed on the other side protrudes toward the other shutter body and the other shutter body end is held upright so that the adjacent shutter body can be held upright by the middle pillar at the same time. A guide rail is formed on the projecting part so that the other shutter body can be opened and closed. The bending / extension of the bending / extension link mechanism is not limited to the above-mentioned inverted V-shaped and inverted W-shaped, but if the middle column bar material is an even number, these inverted V-shaped Fitting part or superposition that fits or superimposes the pivotable connection of the middle column bar material in the middle of the bending / extension link mechanism, such as an inverted W shape, an inverted W shape, etc. In the same manner as in the pivotable connection using the joint member, no step is generated in series, and the intermediate pillars for holding the shutter body end portions individually are connected to each other. To be able to engage with each other when the adjacent shutter body is closed and extended, and the bending / extending direction of the bending / extension link mechanism, especially the bending direction, is the in-plane direction of the shutter body. In addition, the upper and lower shaft support is fixed. In order to restrict the rotation in the out-of-plane direction at the connecting part between them, a rotation restricting measure such as a stopper projection is applied, and the inverted V-shaped bending / extension link mechanism is provided with a standard height opening. The telescopic link mechanism of the telescopic link mechanism according to the height of the opening is used so as to use a bent-and-extend link mechanism of the above-mentioned combination, which is relatively unrestricted by height restrictions, and the above-mentioned combination for the opening of a higher height. When the bent shape is changed, and when the adjacent shutter body is opened and closed at the same speed without different speeds as in the above example, the adjacent shutter body end portions are individually separated. In carrying out the present invention, the middle pillar for standing support is connected to each other at both the upper and lower ends thereof, so that the middle pillar is bent and stretched simultaneously when the shutter body is simultaneously opened and closed. ,shutter Specific structure, shape, material, number, etc. of the main body, flexible column, its flexible link mechanism, medium column bar material, joint member, locking device, fixing device to the floor, etc. These relationships, additions to these, and the like can be in various forms as long as they do not contradict the gist of the invention.
[0033]
【The invention's effect】
Since the present invention is configured as described above, the invention according to claim 1 is characterized in that the middle pillar that allows the shutter body to stand upright and hold in a fixed position is provided above the opening where the shutter body is installed, and the lower end of the shutter body. It can be bent and stretched so that it can be bent and stretched in an inverted V shape, an inverted W shape, etc. In addition, by enabling the end of the shutter body to stand upright by extending and erecting when the shutter is closed, a central pillar is formed to hold the shutter body end upright when the shutter body is closed in conjunction with the opening and closing of the shutter body. It can be folded at the time of opening, eliminating installation and removal when opening and closing the shutter body, and having a flexible column that can be used in place of the fixed column as needed It is possible to provide a smoke shutter.
[0034]
In addition to the above, the invention according to claim 2 is characterized in that the bending / extension link mechanism is arranged in front of and behind the shutter body so that the shutter body is sandwiched in the front and back, so that the end of the shutter body is held upright by the middle pillar. Can be further ensured.
[0035]
In addition to the above, the invention according to the third aspect of the present invention can reliably hold the adjacent shutter body end portions upright, and can stand up the shutter body end portions that are closed regardless of whether the adjacent shutter body ends. Retention can be made independently.
[0036]
In addition to the above, the invention described in claim 4 is capable of swinging back and forth of the middle column by an external force such as wind pressure when both of the adjacent shutter bodies are closed in addition to the above. Therefore, it is possible to improve the certainty of standing and holding the shutter body end.
[0037]
In addition to the above, the invention according to the fifth aspect of the present invention, in addition to the above, is to hold the stand up at the end of the shutter body by integrating the central pillars when both the adjacent shutter bodies are closed. Certainty can be improved.
[0038]
In addition to the above, the invention according to claim 6 is more than 5 m as an intermediate column replacing the fixed intermediate column by fixing the lower end of the intermediate column to the floor of the opening when the shutter body is closed. A smoke-proof shutter can be installed without dividing the opening into a store or the like having an opening width.
[0039]
The invention according to claim 8 can provide a bendable / extendable pillar used for the smoke-proof shutter.
[Brief description of the drawings]
FIG. 1 is a rear view of a smoke-proof shutter.
FIG. 2 is a rear view showing an open / closed state of a shutter main body.
FIG. 3 is a longitudinal sectional view in which a part of the shutter is omitted.
FIG. 4 is a longitudinal sectional view showing an outline of a shutter housing portion.
FIG. 5 is a partially enlarged plan view showing a relationship between a middle pillar and a shutter main body.
FIG. 6 is a partially enlarged front view showing a bent storage state of the middle pillar.
FIG. 7 is a longitudinal sectional view showing a bent storage state of the middle pillar.
FIG. 8 is a partially enlarged rear view showing a fixed state of the middle pillar to the floor.
FIG. 9 is a rear view of another example shutter.
10 is a rear view showing an opened / closed state of the shutter main body of FIG. 9. FIG.
FIG. 11 is a rear view of another example shutter.
FIG. 12 is a rear view of another example shutter.
[Explanation of symbols]
A Smokeproof shutter
2 Shutter body
3 Central pillars
31 Medium pillar bar material
32 Joint members
33 Bracket
35 Locking device
36 Fixing device

Claims (9)

  A shutter having a middle column that is held in an upright position when the shutter body is closed in conjunction with opening and closing of the shutter body, and is folded when opened. It is fixed to the lower end in a pivotable manner and is composed of an even number of middle pillars in the longitudinal direction that are pivotally connected in the middle. By using a bending and stretching link mechanism that can be flexed and stretched in a letter shape, etc., the bent body is stored above the opening at the time of opening in conjunction with the opening and closing movement of the shutter body, and the extension of the shutter body is held up at the time of closing. A smoke-proof shutter with a flexible column that is both flexible.   2. The bendable / extendable mechanism according to claim 1, wherein the bending / extending / linking mechanism is disposed so as to form a pair before and after the shutter main body end so as to sandwich the middle column between the front and rear of the shutter main body end. Smokeproof shutter with a central pillar.   2. The bending / stretching mechanism according to claim 1, wherein the bending / stretching link mechanism is disposed at each end portion of the adjacent shutter body, so that the central column is for individually standing and holding the shutter body end portion. A smoke-proof shutter with a free center pillar.   4. The bendable / extendable / retractable body according to claim 3, wherein the middle pillars for individually standing holding the end portions of the shutter body can be fitted or engaged with each other when the adjacent shutter body is closed and extended. A smoke-proof shutter with a central pillar.   5. The center column for holding the individual stand-up of the shutter body end portion can be locked to each other at an intermediate position in the longitudinal direction when the adjacent shutter body is closed and extended. 5. A smoke-proof shutter with a flexible column.   6. The smoke-proof shutter having a bendable / extendable middle column according to claim 1, wherein the middle column can be fixed to the floor of the opening when the shutter body is closed. .   The said shutter main body is equipped with the seat board which serves as a ceiling block board which plugs up the receiving hole of the accommodating part which this shutter main body penetrates, The 1, 2, 3, 4, 5 or 6 characterized by the above-mentioned. A smoke-proof shutter with a flexible column.   This is a central pillar of the shutter that is held in an upright position when the shutter body opens and closes, and can be folded when the shutter body is opened. It can rotate freely above the opening and at the bottom edge of the shutter body. It is composed of an even number of middle pillars in the longitudinal direction that are fixedly connected to each other in a rotatable manner, and bends and stretches between the upper part of the opening and the lower end of the shutter body in an inverted V shape, an inverted W shape, etc. By adopting a flexion / extension link mechanism that is freely arranged, it is possible to freely both bend and retract the opening above the opening at the time of opening and extend the standing of the shutter body at the time of closing in conjunction with the opening and closing movement of the shutter body. A central pillar of smoke-proof shutter that can be extended and retracted.   The smoke-proof shutter column according to claim 8, wherein the column is bent and extended from an end of the shutter body in a lateral direction in the plane.

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