JP2003239423A - Closing implement for through hole - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To beneficially manufacture in the manufacturing cost a plurality of kinds of circularity retaining frame corresponding to kinds of the size of through holes of a structure, which can be executed in a short time and of which the secure fire cutting off property of the through hole part can be formed in a simple constitution. <P>SOLUTION: The circularity retaining frame 10 is dividedly constituted of long side divided frames 12 corresponding to rectangular long sides of a through hole and short side divided frames 11 corresponding to rectangular short sides of the through hole. One side short side divided frame 11 is removed, and one end of the other halfway built-up frame A2 to which one side short side divided frame 11 is connected while riding on the other end side of the long side divided frame 12 is connectedly constituted against the other end of the halfway built-up frame A1 to which one side short divided frame 11 is connected while riding on the other end side of a pair of the long side divided frames 12. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-resistant filling material with a long insertion object inserted into a through hole formed in a floor or a wall for inserting a long insertion object such as a pipe. The present invention relates to a through-hole closing jig that closes via a through hole.

[0002]

2. Description of the Related Art Conventionally, as a through-hole closing jig 100 of this type, there has been, for example, the one disclosed in Japanese Utility Model Publication No. 1-19535, which has a floor B as shown in FIG.
At the stage of forming and forming concrete with, at a position in the through hole 102 for inserting the long insertion object 101 such as a pipe,
An annular holding frame 104 for holding the heat-expandable heat-resistant filler 103 is installed, after waiting for concrete to be trained, and after inserting the long insertion object 101 into the annular holding frame 104, the annular holding frame 104 By filling the heat-resistant filler 103 between the inner peripheral surface and the outer peripheral surface of the elongated object 101 in a state where the annular holding frame 104 is closed, such an elongated object 101 to be inserted through the floor B. A refractory structure for the part is formed.

[0003]

However, in the through-hole closing jig 100 having such a structure, the manufacturing process is performed in accordance with the construction schedule of the building, and therefore the installation work of the annular holding frame 104 is performed. It is often pointed out that there is a considerable period of time between the time when the heat-resistant filling material 103 is filled and the time when the heat-resistant filling material 103 is filled, and the work efficiency is poor because the work is divided. Moreover, the annular holding frame 104
Since the outer peripheral surface of is formed in the same shape as the through hole 102 formed by concrete pouring, it is necessary to preliminarily manufacture a plurality of types of annular holding frames corresponding to the size of the through hole 102. However, this has been a factor that causes a rise in manufacturing costs.

The present invention has been made in view of the above-mentioned circumstances, and its main problems are to enable short-term construction and to form a reliable fire blocking property of the through hole portion with a simple structure. Another object of the present invention is to provide a through-hole closing jig that can be manufactured, and can manufacture a plurality of types of annular holding frames corresponding to the size of the size of the through-hole of the structure, advantageously in terms of manufacturing cost.

[0005]

According to a first aspect of the present invention, there is provided a through-hole closing jig having a characteristic construction in which the through-hole closing jig has an inner dimension larger than an opening dimension of a rectangular through-hole formed in a structure.
Also, a frame-shaped annular holding frame attached to the outer surface of the structure so as to be able to be mounted on one or a plurality of long objects to be inserted through the through holes, and the inner peripheral surface of the annular holding frame and the length thereof. A heat-expandable heat-resistant filler that is filled in a state of closing the opening of the through hole between the outer peripheral surface of the scale is provided, and
A through-hole closing jig provided with an internal flange portion for receiving a heat-resistant filler in a state in which the bottom portion in the annular holding frame projects toward the elongated object from the opening peripheral edge of the through-hole, The annular holding frame is composed of a long side division frame corresponding to the rectangular long side of the through hole and a short side division frame corresponding to the rectangular short side of the through hole, and one short side division frame. Is removed, and the other short-side divided frame is connected across one end of the pair of long-side divided frames, the other end of the pair of long-side divided frames with respect to the other end of the mid-assembly frame One end portion of the other intermediate assembly frame in which one of the short side division frames is connected across the above is configured to be connectable.

According to the above characteristic structure, since the annular holding frame has a divided structure and can be attached to the structure, the step of inserting the long insertion object through the through hole formed in the structure. Since it is possible to start construction with, and it is possible to perform the work of assembling the split frame and the work of filling the heat resistant filler in the assembled annular frame in a series of operations, compared to conventional construction Therefore, short-term construction is possible. Further, since the annular holding frame has a divided structure, it is possible to carry the goods or to the site in a bulky state. Further, for example, even when the through hole formed in the structure is large, one short side dividing frame is removed, and the other short side dividing frame is connected across one end of the pair of long side dividing frames. By connecting one end of the other half-assembled frame to the other end of the half-assembled frame, one short-side divided frame is connected to the other end of the pair of long-side divided frames, Since an annular holding frame suitable for the through hole can be obtained, it is not necessary to form a plurality of types of annular holding frames corresponding to the size of the through hole of the structure, and many different sizes can be obtained with a small number of parts. It is possible to make various types of annular holding frames. Further, since the heat-expandable heat-resistant filler can be filled between the inner peripheral surface of the annular holding frame and the outer peripheral surface of the elongated object in a state where the opening of the through hole is closed, a simple configuration is possible. The structure is such that the fire barrier property of the through hole portion is surely executed. Therefore, as compared with the conventional through hole closing jig, the handling property can be improved, and a plurality of types of annular holding frames corresponding to the size of the through hole of the structure can be advantageously manufactured in terms of manufacturing cost. Can be manufactured.

A through hole closing jig according to a second aspect of the present invention is characterized in that the internal flange portion is formed with a communicating portion that is large enough to allow the heat resistant filler to enter and communicates with the outer surface of the structure. The communication part is formed by a plurality of cutout parts.

According to the above characteristic construction, the heat-resistant filling material filled in the annular holding frame enters the notch portion and directly comes into contact with the outer surface of the structure, so that a fire occurs. If the through hole of the structure is hit by a fire or the like due to such factors, the heat resistant filler expands in the opening of the through hole in the annular holding frame, and the bottom of the annular holding frame and the outer surface of the structure The heat-resistant filling material that expands through the notch of the inner flange part and the bottom part in the annular holding frame while continuing to fill the small gap with the long insertion object until it finishes expanding. Since it can intrude into the gap with the outer surface of the structure to reliably fill the gap, it can reliably close the opening of the structure and has good heat and smoke blocking performance and high fire blocking performance. Through hole closing jig can be formed, Compared to the closed jig, it is possible to improve the reliability.

A characteristic construction of a through-hole closing jig according to a third aspect of the present invention is that the notch is formed in a state of slightly overhanging to the elongated object side with respect to the opening peripheral edge of the through-hole. is there.

According to the above characteristic structure, the heat-resistant filling material filled in the annular holding frame is in a state of entering the notch portion and in a state of partially facing the opening, which causes a fire. If the through hole of the structure is attacked by fire, etc., the heat-resistant filling material that expands slightly enters the opening periphery via the notch, and the annular holding frame and the opening of the structure The boundary can be closed to surely fill the gap between the annular holding frame and the opening.

A through hole closing jig according to a fourth aspect of the present invention is characterized in that a part of the inner flange portion is formed in an inclined posture in which the inner end portion of the inner flange portion is separated from the outer surface of the structure. It is in.

According to the above characteristic structure, when the heat of fire or the like strikes the through hole of the structure due to a fire or the like, the expanded heat resistant filler moves along the inclination of the inner flange portion, and The heat-resistant filler that expands in the direction away from the outer surface of the structure has directivity to concentrate the gap filling force on the long insertion object that is inserted through the through hole, and the specified amount of heat resistance In addition to being able to reliably block the opening of the structure with a heat-resistant filler, when the structure is on the floor, etc., the expanding heat-resistant filler moves upward along the slope of the inner flange part, Since it is possible to prevent the heat-resistant filler that has expanded to the lower layer (floor) from falling, it is possible to improve reliability.

A through hole closing jig according to a fifth aspect of the present invention is characterized in that an opening of the annular holding frame is detachably provided with a lid for holding the filled heat-resistant filling material. The inner end side of the lid body is inclined to be separated from the outer side surface of the structure.

According to the above-mentioned characteristic structure, when a fire or the like hits the through hole of the structure due to a fire or the like, the expanded heat-resistant filling material causes the inner end of the lid body to be inclined. Since it can be held in a state along the side, the gap filling force can be concentrated on the elongated object to be inserted through the through hole, so that the opening of the through hole can be closed more reliably.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS [Embodiment] A through hole closing jig A according to an embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 to 9, the through-hole closing jig A of this embodiment is formed in advance on a structure B such as a concrete skeleton such as a floor as designed, and at the same time, a long insertion object is provided. It is configured such that it can be attached to the through hole 1 through which a pipe C such as an air-cooling heat insulating pipe as an example is inserted. In the drawing, an example is shown in which five sets of pipes C, which are a cooling and heat insulating pipe in which a coating gas pipe for an air-conditioning refrigerant, a coating liquid pipe, and a set of cables are inserted into the through hole 1.

As shown in FIGS. 2 and 5, the through hole closing jig A has an inner dimension larger than the opening dimension of the through hole 1 formed in the concrete skeleton B and having a rectangular shape in plan view.
Further, an annular holding frame 10 attached to the outer surface B1 of the concrete skeleton B so that it can be installed on the five sets of pipes C ... Inserting the through holes 1, and an inner peripheral surface of the annular holding frame 10 and the piping C.
A heat-expandable heat-resistant filling material 20 filled in a state of closing the opening 1A of the through-hole 1 is provided between the outer peripheral surface of the ... An internal flange portion 13 is provided for receiving the heat-resistant filling material 20 in a state of overhanging to the pipe C ... side from the opening peripheral edge 1a of the through hole 1, and the opening portion 10A of the annular holding frame 10 is filled with the heat-resistant material. A plurality of (four in this embodiment) lids 30 that hold down the filler 20 are detachably provided. Annular holding frame 1 that constitutes the through hole closing jig A
0, the lid body 30 is formed by processing, for example, a plated iron plate having a thickness of about 1.6 mm.

As shown in FIG. 2, the annular holding frame 10 has two long side dividing frames 12 and 12 having the same length corresponding to the rectangular long side of the through hole 1 and the rectangular short side of the through hole. Is divided into a pair of short side dividing frames 11 and 11, and one short side dividing frame 11 is removed, and
The other short-side divided frame 11 is connected to the other short-side divided frame 11 in which the other short-side divided frame 11 is connected across one end of the pair of long-side divided frames 12 that face each other in parallel. And a pair of long side division frames 1 facing each other in parallel.
One end portion of the other intermediate assembly frame A2, in which one short side divided frame 11 is connected to the other end portions of 2 and 12, is configured to be fixedly connectable. That is, one of the intermediate assembly frames A1
The other end portions of the two long side division frames 12 and 12 constituting the above and one end portions of the two long side division frames 12 and 12 constituting the other intermediate assembly frame A2 expose one annular holding frame 10. In this state, it is detachably attached and fixedly connected through fastening means such as screws.

As a result, the annular holding frame 1 in the connected state.
0 is a pair of short side dividing frames 11 and 11 corresponding to the rectangular short sides of the through hole 1 and two long side dividing frames corresponding to the rectangular long sides of the through hole 1 in a facing state to divide four long sides. Frame 12,12,1
2, 12 and 12 are assembled and connected.

The short side dividing frame 11 has a flange portion 11 extending from the upper and lower end portions of the vertical plate 11A so that the sectional shape thereof becomes a U-shape.
Vertical plates 11A are formed by bending B and 11C outwardly.
Through holes 11a, 11a for tapping screws used for connection with the long side dividing frame 12 are formed in the upper and lower central portions on both sides of.

The long side dividing frame 12 has an upper member 12C formed by bending an upper flange portion 12B outward from the upper end of the vertical plate 12A and away from the through hole 1, and an upper flange portion 12B at the lower end of the vertical plate 12A. A lower flange portion 12D that is opposite to the lower flange portion 12D is integrally formed outward, and a horizontal portion 12E having a predetermined width that is integrally formed with the lower flange portion 12D is formed inside the frame of the vertical plate 12A. An internal flange portion in which an inclined portion 12F having an inclined posture (for example, an inclined posture of about 10 degrees) away from the outer side surface B1 of the concrete skeleton B is formed on the inner end side closer to the through hole 1 side than the horizontal portion 12E. 13 and connecting pieces 12H, 12H that are bent inward from both end portions of the vertical plate 12A toward the through hole 1, and the upper flange portion 12B has a lid body. Barring tap holes 12a for tapping screws used for connection with 0 are formed at a plurality of intervals, and lower flange portion 12D is provided with insertion holes 12b for concrete screws used for attachment to a concrete skeleton. A plurality of connecting portions 12H are formed in the inner flange portion 13, and the inner flange portion 13 is formed with a communicating portion D communicating with the outer surface B1 of the concrete skeleton B and having a size that allows the heat resistant filler 20 to enter. An insertion hole 12c for inserting a tapping screw or a burring tap hole 12e is formed in the plate-shaped central portion, and the connecting piece 1 on the other side is formed.
2H includes a through hole 12c or a tap hole 12 in the plate-shaped central portion.
e is formed.

Here, as shown in FIGS. 8 and 9, a rectangular annular frame body 10 is formed by using a pair of short side division frames 11 and 11 and four long side division frames 12 ... In this case, in order to remove the tapping screw T from the outside of the short side dividing frames 11 and 11 so that the annular frame body 10 can be disassembled, the connecting piece 12H of the long side dividing frame 12 corresponding to the short side dividing frame 11 is provided. ,
A tap hole 12e corresponding to the insertion hole 11a formed in the short side divided frame 11 is formed, and the long side divided frames 12 adjacent to each other are connected to each other by inserting the insertion hole into the connecting piece 12H of one long side divided frame 12. 12c and the other long side division frame 12
It is necessary to use the connecting piece 12H having the tap hole 12e formed therein, that is, in the pair of short side dividing frames 11 and the long side dividing frame 12 having exactly the same configuration, the connecting piece 12H is inserted into one side. The hole 12c is formed, and the connecting piece 12 on the other side is formed.
A first type long side dividing frame 12 (12-1) in which a tap hole 12e is formed in H, and a second type long side dividing frame 12 (12 in which a tap hole 12e is formed in the connecting pieces 12H on both sides.
-2) are used.

The annular holding frame 10 in this embodiment is
As shown in FIG. 9, the first type of long side division frame 12 (12-1) is used for one of the long side division frames 12 facing each other in parallel in the midway assembly frame A1. On the other side of the side dividing frame 12, the second type long side dividing frame 12 (12-
2) and the second type long side dividing frame 12 (12-2) is used for one of the long side dividing frames 12 facing in parallel in the other middle side assembly frame A2, and the long sides facing in parallel are used. Dividing frame 1
By using the first-type long side divided frame 12 (12-1) for the other of the two, both the one intermediate assembly frame A1 and the other intermediate assembly frame A2 are inserted into the insertion hole 1 of the short side divided frame 11.
1a corresponds to the insertion hole 12c of the long side division frame 12,
The other ends of the other intermediate assembly frame A2 to which the short side segmented frames 11 are not connected and the ends of the long side segmented frames 12 facing the one end of the one intermediate assembly frame A1 are the long side segmented frames. 12
The through hole 12c and the tap hole 12e are configured to correspond to each other.

Therefore, one of the intermediate assembly frames A1 and the other of the intermediate assembly frames A2 are smaller in size than the annular holding frame 10. Therefore, one intermediate assembly frame A1 and the other intermediate assembly frame A2 are previously prepared. As described above, the annular holding frame 10 can be easily formed by assembling the two on the spot by using the divided structure assembled into a certain size.

In this embodiment, the lower flange portion 12D
And the internal flange portion 13 are integrally connected, and the bent tongue 12Ca formed along the longitudinal direction at the lower end portion of the upper member 12C and the horizontal portion 12E of the internal flange portion 13 are spot welded. Are integrally connected by.

As the heat-resistant filler 20, a known putty-like material which expands to a volume ratio of about 4 to 10 times or more by heating and is easy to handle by hand is used.

The communicating portion D has a plurality of rectangular notches D1 (in this embodiment, six positions are shown) formed in a line along the longitudinal direction of the inner flange portion 13, and more specifically, The cutout portion D1 is formed so as to straddle the horizontal portion 12E and the inclined portion 12F, and each cutout portion D1 is projected to the through hole 1 slightly beyond the opening peripheral edge 1a of the through hole 1. Has been formed.

The lid 30 has a length that is approximately half the length of the annular holding frame 10, that is, the length obtained by adding the length of the long side divided frame 12 and the width of one short side divided frame 11. Is formed on the plate-shaped base end portion 30A corresponding to the tap hole 12a of the long side division frame 12, and the insertion hole 30a for inserting the tapping screw is formed in the base end portion 30A. On the pipe C ... side, that is, on the inner end side, an inclined portion 30B is formed integrally so as to be inclined from the outer surface of the structure.

With such a structure, for example, as shown in FIG. 4, a plurality of pipes C ... Are arranged in a through hole 1 formed in a concrete skeleton B such as a floor of a building. At a stage, as shown in FIG. 5, the short side dividing frame 11 is previously connected to the pair of long side dividing frames 12 and 12 facing each other in parallel via the tapping screws T ... The assembling frame A1 is assembled, and the short side dividing frame 11 extends across the other end side of the pair of long side dividing frames 12 facing each other in parallel.
Are assembled via the tapping screws T ... and the other end side assembly frame A2 is assembled, and the other end side assembly frame A2 is connected to the one end side assembly frame A1 and the short side dividing frame 11 is not connected to the one end side. The other end of the assembly frame A1 and the other end side assembly frame A2
While assembling the annular holding frame 10 by connecting it to one end of the annular holding frame 10 with tapping screws T ..., With the opening 1a of the through hole 1 facing the center of the opening 10A of the annular holding frame 10, The annular frame 10 is attached and fixed to the outer side surface B1 of the concrete driving body B via the concrete screws K.

Next, as shown in FIG. 6, the annular frame 10
Between the inner peripheral surface of the pipe and the outer peripheral surface of the pipe C ...
The heat-resistant filling material 20 is filled until it becomes almost flush with the upper end of 0.

Next, as shown in FIG. 7, four lids 30 ... Are connected and fixed to the annular holding frame 10 via tapping screws T. The construction of the through hole closing jig A for closing is completed.

Other Embodiments 1) In the above embodiment, as shown in FIG.
The long side division frames 12 of one intermediate assembly A1 and the other intermediate assembly frame A2 have the same length, and the annular holding frame body 10 corresponding to the five sets of pipes C inserted into the through hole 1 is configured. However, the present invention is not limited to this, and for example, a case where the annular holding frame body 10 corresponds to the five sets of pipes C that are inserted into the through holes 1 will be described. As shown in FIG. 10B, one intermediate assembly frame A1 using the long side dividing frame 12 having a length corresponding to four sets of the pipes C ... Inserted in the through hole 1 and the through hole 1 are inserted. Do 4
The annular holding frame body 10 is configured by combining with the other intermediate assembly frame A2 using the long side division frame 12 having a length corresponding to the set of pipes C ..., or as shown in FIG. One halfway assembling frame A1 using a long side dividing frame 12 having a length corresponding to two sets of pipes C ... Inserted in the hole 1 and lengths corresponding to three sets of pipes C ... Inserted in the through hole 1 Long side division frame 1
The annular holding frame body 10 is formed by combining the other halfway assembling frame A2 using 2 and the length corresponding to the three sets of pipes C ... Inserted in the through hole 1 as shown in FIG. One end side assembly frame A1 using the long side dividing frame 12 and the other end side assembly frame A2 using the long side dividing frame 12 having a length corresponding to two sets of pipes C ... 11 to form the annular holding frame body 10, or, as shown in FIG. 11 (e), using the long side dividing frame 12 having a length corresponding to the four sets of pipes C ... Inserted in the through hole 1. Assembly frame A1 in the middle of
And the other intermediate assembly A2 using the long side dividing frame 12 having a length corresponding to the set of pipes C inserted into the through hole 1, the annular holding frame body 10 is configured.
The through-hole 1 is formed by using one of the midway assembly frames A1 and the other midway assembly frame A2 having different long side division frames 12.
The annular holding frame body 10 corresponding to the five sets of pipes C ...
May be configured. In this case, usage patterns can be diversified. Here, the annular holding frame body 10 of each of the above-described embodiments includes five sets of pipes C that are inserted into the through holes 1.
Although the one corresponding to ... has been described, this has been described by showing a specific example of the relationship between the size of the annular holding frame body 10 and the number of the pipes C inserted into the through holes 1.
It may correspond to the number of pipes C ... Which is less than 5 sets, or may correspond to the number of pipes C that is greater than 5 sets. Similarly, the lengths of the long side divided frames 12 and 12 and the short side divided frames 11 and 11 which form the annular holding frame body 10,
The height and the like can be freely set in terms of design. As described in the embodiment, the lid body 30 may be one that divides the length of the annular holding frame body 10 in the longitudinal direction into two equal parts, but it corresponds to the length of the long side dividing frame 12. You may use what was formed in length.

2) In the above embodiment, the description has been made of the case where the six cutout portions D1 ... Forming the communication portion D are formed in a line along the longitudinal direction of the inner flange portion 12G, but the present invention is not limited to this. Not limited to 6 or even 6 or more
The number of the cutouts may be equal to or less than the number of positions, and even in the arranged state, the plurality of cutouts D1 may be arranged in a zigzag pattern along the inner flange portion. The shape is not limited to the illustrated rectangular shape, and may be a slit-like long hole shape, a round hole shape, a lattice hole shape, a wave hole shape, or the like.

3) In the above embodiment, an example in which the respective members are connected by the screwing relationship between the tapping screw T and the tap holes 11d, 11d, 12a, 12e has been shown, but the present invention is not limited to this, and a welded nut is used. The respective members may be connected to each other by a screwing relation between the screw and the screw, a screwing relation between the screwed screw hole and the screw, or the like. Further, a configuration may be employed in which a bolt insertion hole is formed in the connecting portion and the members are connected by using the bolt and the nut.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a through-hole closing jig according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a state before the annular holding frame is attached to the structure.

FIG. 3 is a simplified perspective view showing a state in which a through-hole closing jig is used to close a through-hole into which a long insertion object is inserted.

FIG. 4 is a simplified vertical sectional view showing a state in which a long insertion object is inserted into a through hole of a structure.

FIG. 5 is a simplified vertical cross-sectional view showing a state in which an annular holding frame is attached and fixed so as to correspond to the through holes of the structure.

FIG. 6 is a simplified vertical cross-sectional view showing a state in which a heat resistant filler is filled between the annular holding frame and the elongated object to be inserted.

FIG. 7 is a simplified vertical cross-sectional view showing a state in which a lid is connected to an annular holding frame filled with a heat resistant filler.

FIG. 8 is a schematic cross-sectional view (a) showing a rectangular short side of the annular holding frame, a long side division frame, and a connection structure of the long side division frames, and FIG. ) Is a vertical sectional view showing the connected state

FIG. 9 is a schematic plan view showing a rectangular short side of a ring-shaped holding frame, a long side division frame, and a connection structure of the long side division frames.

FIG. 10 is a simplified plan view (a) in which a short side division frame is connected to an assembly frame on one end side. FIG. 10 shows a correspondence relationship between the lengths of the long side division frame and the short side division frame and the number of pipes. The simplified plan view (b) showing the annular holding frame in which the number of the pipes is 2.5 to 2.5 is 4 pairs in the correspondence between the lengths of the long side divided frame and the short side divided frame and the number of pipes. The simplified plan view (c) showing the annular holding frame configured in FIG. 1 is an annular configuration in which the correspondence between the lengths of the long-side divided frame and the short-side divided frame and the number of pipes is configured to be 3 to 2. Simplified plan view showing the holding frame

FIG. 11 is a simplified plan view (d) in which a short side division frame is connected to one intermediate assembly frame, and FIG. 11 shows the correspondence between the lengths of the long side division frame and the short side division frame and the number of pipes. In the simplified plan view (e) showing the annular holding frame having a relationship of 2 to 3, the correspondence relationship between the lengths of the long-side divided frame and the short-side divided frame and the number of pipes is 1: 4. Plan view showing an annular holding frame being used

FIG. 12 is a simplified vertical sectional view showing a conventional through-hole closing jig.

[Explanation of symbols]

A Through-hole closing jig A1 One-way assembly frame A2 The other half of the assembly frame B structure (concrete frame) Outside surface of B1 structure C Long Insert (Piping) D communication section D1 notch 1 through hole 1a Opening edge 10 Ring holding frame 10A opening 11 Short side division frame 12 long side division frame 13 Internal flange 20 Heat resistant filler 30 lid

Claims (5)

[Claims] 1. A structure having an inner size larger than an opening size of a rectangular through hole formed in a structure and capable of being externally mounted on one or a plurality of long insertion objects which are inserted through the through hole. As described above, the frame-shaped annular holding frame attached to the outer surface of the structure is filled with the through-hole opening between the inner peripheral surface of the annular holding frame and the outer peripheral surface of the elongated object. An inner flange that is provided with a heat-expanding heat-resistant filler, and that receives the heat-resistant filler in a state that it projects toward the elongated object side from the opening peripheral edge of the through hole at the bottom portion inside the annular holding frame. A jig for closing a through hole, wherein the annular holding frame has a long side dividing frame corresponding to a rectangular long side of the through hole and a short side dividing frame corresponding to a rectangular short side of the through hole. It is divided from the frame and one of the short side dividing frames is removed, and a pair of long sides The other short-side divided frame is connected across one end of the split frame, while the other short-side divided frame extends over the other end of the pair of long-side divided frames. A through-hole closing jig configured so that one end of the other intermediate assembly frame that is connected can be connected. 2. The inner flange portion is formed with a communicating portion that is large enough to allow a heat resistant filler to enter and communicates with an outer surface of the structure, and the communicating portion is formed by a plurality of notches. The through hole closing jig according to claim 2. 3. The through hole closing jig according to claim 2, wherein the cutout portion is formed in a state of slightly overhanging from an opening peripheral edge of the through hole. 4. The through-hole closing jig according to claim 1, 2 or 3, wherein a part of the inner flange portion is arranged in an inclined posture in which the inner end portion thereof is more distant from the outer surface of the structure. 5. A lid body for pressing down the filled heat-resistant filling material is detachably provided in the opening of the annular holding frame, and the inner end side of the lid body is separated from the outer side surface of the structure. The through-hole closing jig according to any one of claims 1 to 4, which is configured in an inclined posture.