JP3935739B2 - Through hole closing jig - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a through hole that closes a long inserted material through a heat-resistant filler while being inserted into a through hole formed in a floor or a wall in order to insert a long inserted material such as piping. The present invention relates to a closing jig.
[0002]
[Prior art]
Conventionally, as this kind of through-hole closing jig 100, for example, there is one disclosed in Japanese Utility Model Publication No. 1-19535 and the like, as shown in FIG. In the forming step, an annular holding frame 104 for holding the heat-expandable heat-resistant filler 103 is installed in a place in the through hole 102 through which the long inserted object 101 such as a pipe is inserted, and the concrete is trained. After waiting and inserting the long inserted object 101 into the annular holding frame 104, the heat is kept in a state where the annular holding frame 104 is closed between the inner peripheral surface of the annular holding frame 104 and the outer peripheral surface of the long object 101. By filling the conductive filler 103, a fireproof structure is formed for the long inserted article 101 portion that passes through the floor B.
[0003]
[Problems to be solved by the invention]
However, in the through-hole closing jig 100 having such a structure, since the manufacturing process is performed in accordance with the construction schedule of the building, the heat-resistant filler 103 of the heat-resistant filler 103 is formed from when the annular holding frame 104 is installed. There is often a considerable period of time before the filling operation is performed, and there is an indication that the work efficiency is poor because a divided operation is required.
In addition, since the outer peripheral surface of the annular holding frame 104 is configured to have the same shape as the through hole 102 formed by concrete placement training, a plurality of types of annular holding frames corresponding to the size of the through hole 102 are provided. Must be manufactured in advance, which has led to an increase in manufacturing costs.
[0004]
The present invention has been made in view of the above-described situation, and its main problem is to enable short-term construction and to form a reliable fire-blocking property of the through-hole portion with a simple configuration. In addition, the present invention is to provide a through-hole closing jig capable of advantageously producing a plurality of types of annular holding frames corresponding to the types of sizes of the through-holes of the structure in terms of manufacturing cost.
[0005]
[Means for Solving the Problems]
The through hole closing jig according to claim 1 of the present invention is characterized in that the inner dimension is larger than the opening dimension of the rectangular through hole formed in the structure from the long side divided frame member and the short side divided frame member. An annular holding frame that is divided and configured to be assembled into a frame shape, and is attached to the outer surface of the structure in a state in which it can be externally mounted on one or a plurality of long inserted articles that pass through the through hole; A heat-expandable heat-resistant filler filled in a state of closing the opening of the through hole between the inner peripheral surface of the annular holding frame and the outer peripheral surface of the long inserted article ; At the bottom of the annular holding frame is a through-hole closing jig provided with an internal flange portion that receives the heat-resistant filler in a state of projecting to the hole center side from the opening periphery of the through-hole,
The internal flange portion is formed with a communicating portion that is large enough to enter the heat-resistant filler and communicates with the outer surface of the structure .
[0006]
According to the above characteristic configuration, the heat-resistant filler filled in the annular holding frame enters the communication portion and directly comes into contact with the outer surface of the structure. When a fire or the like hits the through-hole, the heat-resistant filler expands at the opening of the through-hole in the annular holding frame and enters the gap between the bottom of the annular holding frame and the outer surface of the structure. Intrusions continue to fill up a slight gap with the long insertion object until expansion is completed, and the expanding heat-resistant filler passes through the communication part of the internal flange part, and the bottom part in the annular holding frame and the outer surface of the structure Can be reliably filled, so that the opening of the structure can be reliably closed, and the through hole closing jig with good heat blocking performance and smoke blocking performance and high fire blocking performance Compared with the conventional through hole closing jig , It is possible to improve the reliability.
[0007]
The through hole closing jig according to claim 2 of the present invention is characterized in that the communicating portion is composed of communicating holes formed at a plurality of locations in the longitudinal direction of the internal flange portion, and each communicating hole is formed outside the structure. It exists in the point formed over the position which faces a through-hole from the position which faces a side surface .
[0008]
According to the above characteristic configuration, the heat-resistant filler filled in the annular holding frame is in a state of entering the communication hole, and a part of the structure faces the opening. When fire heating or the like hits the through-holes, the heat-resistant filler that expands slightly enters the periphery of the opening via the communication hole, blocking the boundary between the annular holding frame and the structure opening. The gap between the annular holding frame and the opening can be reliably filled.
[0011]
Further, a part of the inner flange portion may be configured in an inclined posture in which the inner end portion thereof is separated from the outer surface of the structure.
[0012]
According to the above Ki構 formed, when ready to fire heat or the like strikes the through hole of the structural member by a fire or the like, expanded heat-resistant filler is shifted along the inclination of the inner flange portion, always the structure The heat-resistant filler expanded in the direction away from the outer surface of the tube has directivity, so that the gap filling force can be concentrated on the long inserted material that passes through the through hole. The opening of the structure can be reliably closed without waste with the material, and when the structure is on the floor or the like, the expanding heat-resistant filler moves upward along the inclination of the internal flange portion , and the lower layer ( Since it is possible to prevent the heat-resistant filler expanded to the floor) from dropping, the reliability can be improved.
[0013]
Furthermore, the opening of the annular holding frame is detachably provided with a lid for pressing the filled heat-resistant filler, and is inclined so that the inner end side of the lid is away from the outer surface of the structure. It may be configured .
[0014]
According to the above Ki構 formed, when ready to fire heating or the like strikes the through hole of the structural member by a fire or the like, expanded heat-resistant filler, the inner end side of the lid that is configured to tilt posture Since it can hold | maintain in the state followed, the gap embedding force with respect to the elongate to-be-inserted object which penetrates a through-hole can be concentrated, Therefore The opening of a through-hole can be obstruct | occluded more reliably.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment
Hereinafter, a through hole closing jig A according to an embodiment of the present invention will be described 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 frame such as a floor as designed, and is used for a long inserted article. It is comprised so that attachment construction can be carried out with respect to the through-hole 1 in which piping C, such as an air conditioning piping which is an example, is penetrated. In the drawing, an example is shown in which five sets of pipes C, which are cooling and heat insulation pipes that are a set of a coating gas pipe, a coating liquid pipe, and a cable for air conditioning refrigerant, are inserted into the through hole 1.
[0016]
As shown in FIGS. 2 and 5, the through-hole closing jig A is configured to have an inner dimension larger than the opening dimension of the through-hole 1 having a rectangular shape in plan view formed in the concrete frame B, and the through-hole An annular holding frame 10 attached to the outer surface B1 of the concrete frame B so that it can be externally attached to five sets of pipes C through which 1 is inserted, an inner peripheral surface of the annular holding frame 10 and an outer peripheral surface of the pipe C ... A heat-expandable heat-resistant filler 20 filled in a state of closing the opening 1A of the through hole 1 is provided therebetween, and the bottom of the annular holding frame 10 has an opening peripheral edge of the through hole 1 An internal flange portion 13 that receives the heat-resistant filler 20 in a state of projecting toward the hole center side from 1a is provided, and a plurality (for holding the heat-resistant filler 20 filled in the opening 10A of the annular holding frame 10 ( In this embodiment, four lids 30 are attached and detached. It is configured provided standing. The annular holding frame 10 and the lid 30 constituting the through-hole closing jig A are formed by machining from an iron plate plated with a thickness of about 1.6 mm, for example.
[0017]
As shown in FIG. 2, the annular holding frame 10 corresponds to the two long side divided frame members 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. One end of a pair of long-side divided frame members 12 and 12 that are divided and configured from a pair of short-side divided frame members 11 and 11 that are removed from one short-side divided frame member 11 and face each other in parallel. A pair of lengths in which the other short side divided frame member 11 is removed and faced in parallel to the other end of the assembly frame A1 in the middle of the other short side divided frame member 11 being connected across the part One end portion of the other halfway assembly frame A2 to which one short side divided frame member 11 is connected across the other end portions of the side divided frame members 12, 12 is configured to be fixedly connected.
That is, the other end portions of both long side divided frame members 12 and 12 constituting one intermediate assembly frame A1 and one end portion of both long side divided frame members 12 and 12 constituting the other intermediate assembly frame A2. One annular holding frame 10 is fixedly connected through a fastening means such as a screw so as to be detachable in a state where it appears.
[0018]
As a result, the annular holding frame 10 in the connected state is opposed to the pair of short side divided frame members 11, 11 corresponding to the rectangular short side of the through hole 1 and the rectangular long side of the through hole 1. It is configured by assembling and connecting four long-side divided frame members 12, 12, 12, 12 in two pairs corresponding in the state.
[0019]
The short-side divided frame member 11 is formed by bending flange portions 11B and 11C outward from the upper and lower end portions of the vertical plate 11A so that the cross-sectional shape becomes a U-shape. The tapping screw insertion holes 11a and 11a used for the connection with the long side divided frame member 12 are formed.
[0020]
The long-side split frame member 12 has an upper member 12C formed by bending an upper flange portion 12B in an outward direction away from the through hole 1 from the upper end of the vertical plate 12A, and an upper flange portion 12B at the lower end of the vertical plate 12A. The lower flange portion 12D is integrally formed outwardly, and a horizontal portion 12E having a predetermined width formed integrally with the lower flange portion 12D is formed on the inner side of the frame of the vertical plate 12A. An inner flange portion 13 formed with an inclined portion 12F that forms an inclined posture (for example, an inclined posture of about 10 degrees) away from the outer surface B1 of the concrete frame B on the inner end side toward the through hole 1 side from 12E. The connecting pieces 12H and 12H are formed to be bent inward from the both side end portions of the vertical plate 12A toward the through hole 1, and the upper flange portion 12B is connected to the lid 30. A plurality of tapped holes 12a ... tapped for tapping screws used for linking are formed at a plurality of intervals, and through holes 12b for concrete screws used for attachment to a concrete frame are spaced apart at the lower flange portion 12D. A plurality of formed internal flange portions 13 are formed with communication portions D communicating with the outer surface B1 of the concrete frame B in such a size that the heat-resistant filler 20 can enter, and the one side connection piece 12H has a plate shape. A tapping screw insertion hole 12c or a burring tapped hole 12e is formed in the center, and the other connecting piece 12H is formed with a through hole 12c or a tapped hole 12e in the plate-shaped center.
[0021]
Here, as shown in FIG. 8 and FIG. 9, when the illustrated rectangular ring frame 10 is formed by using a pair of short-side divided frame members 11, 11 and four long-side divided frame members 12. , in order from the outside of the short side divided frame members 11 remove the tapping screw T is degradable configured annular frame 10, connecting piece 12H of the long side divided frame member 12 corresponding to the short side divided frame member 11 to the tap hole 12e corresponding to the insertion holes 11a formed in the short side divided frame member 11 is formed, the coupling of the long side divided frame member 12 adjacent the connection of one of the long sides divided frame member 12 It is necessary to use a piece 12H having an insertion hole 12c and a connecting piece 12H of the other long side dividing frame member 12 having a tap hole 12e, that is, a pair of short side divisions having exactly the same configuration. the frame member 11, the long side divided frame member 12 smell The insertion hole 12c is formed in the connecting piece 12H of the one side, a first type of long side divided frame member 12 from the tap hole 12e formed in the connecting piece 12H of the other side (12-1), each side connecting the Two types such as a second-type long-side divided frame member 12 (12-2) in which a tap hole 12e is formed in the piece 12H are used.
[0022]
Annular holding frame 10 in this embodiment, as shown in FIG. 9, the one way assembly frame A1, one first type of long side divided frame member 12 of the long side divided frame member 12 that faces in parallel ( 12-1), the second-type long-side divided frame member 12 (12-2) is used for the other of the long-side divided frame members 12 facing each other in parallel, and the other half-side assembly frame A2 is parallel to the other while the second type of long side divided frame member 12 (12-2) used in the opposed long sides divided frame member 12, the long side divided frame of the first type to the other long side divided frame member 12 that faces in parallel By using the member 12 (12-1), both the halfway assembly frame A1 and the other halfway assembly frame A2 are inserted into the insertion holes 11a of the long side division frame member 12 with respect to the insertion holes 11a of the short side division frame member 11. 12c corresponds, while the short side divided frame member 11 is not connected And the other end of the middle assembly frame A2, ends of the long side divided frame member 12 that faces the one end portion of one of the middle assembly frame A1 is, and the insertion hole 12c and the tap hole 12e of the long side divided frame member 12 Is a corresponding configuration.
[0023]
Therefore, the size of one intermediate assembly frame A1 and the other intermediate assembly frame A2 is smaller than that of the annular holding frame 10, so that one intermediate assembly frame A1 and the other intermediate assembly frame A2 are called in advance. If the two are assembled at the site, the annular holding frame 10 can be easily formed.
[0024]
In this embodiment, the lower flange portion 12D and the inner flange portion 13 are integrally connected, a bent tongue 12Ca formed along the longitudinal direction at the lower end portion of the upper member 12C, and the inner flange portion 13 are used. The horizontal portion 12E is integrally connected by spot welding or the like.
[0025]
As the heat-resistant filler 20, a known material that is putty-like and expands to a volume ratio of about 4 to 10 times or more by heating and is easy to handle by hand is used.
[0026]
The communication part D is formed with a plurality of (not shown in this embodiment) rectangular cutouts D1 through holes D1... In a line along the longitudinal direction of the internal flange part 13. with each hole D1 is formed across the inclined portion 12F and the horizontal portion 12E, the through-hole 1, while projecting slightly from the opening peripheral edge 1a of the through-hole 1, each hole D1 is formed Has been.
[0027]
The lid 30 is approximately half the length of the annular holding frame 10 in the longitudinal direction, that is, the length obtained by adding the length of the long side divided frame member 12 and the width of one short side divided frame member 11. And a tapping screw insertion hole 30a ... corresponding to the tap hole 12a of the long side divided frame member 12 is formed in the plate-like base end 30A, and this base end 30A Are integrally formed with an inclined portion 30B that has an inclined posture away from the outer surface of the structure toward the hole center side, that is, the inner end side.
[0028]
If it is such a configuration, for example, as shown in FIG. 4, at the stage where a plurality of pipes C are arranged in a through hole 1 formed in a concrete frame B such as a floor of a building, As shown in FIG. 5, the short-side divided frame member 11 is connected to one end side of a pair of long-side divided frame members 12 and 12 facing each other in parallel via a tapping screw T in advance. The frame A1 is assembled, and the short-side divided frame member 11 is connected via the tapping screws T to straddle the other end sides of the pair of long-side divided frame members 12, 12 facing each other in parallel. A2 is assembled, the other end assembly frame A2 is connected to the one end assembly frame A1, the other end of the one end assembly frame A1 to which the short side divided frame member 11 is not connected, and the other end assembly frame A2. Are connected to each other through tapping screws T ... to form an annular holding frame 1. In the state where the opening 1a of the through-hole 1 faces the central portion with respect to the opening 10A of the annular holding frame 10, the annular frame 10 is placed outside the concrete body B via the concrete screws K. Install and fix to side B1.
[0029]
Next, as shown in FIG. 6, the heat resistant filler 20 is placed between the inner peripheral surface of the annular frame 10 and the outer peripheral surface of the pipe C... Until the upper end of the annular holding frame 10 is substantially flush. Fill.
[0030]
Next, as shown in FIG. 7, four lids 30 are connected and fixed to the annular holding frame 10 via tapping screws T, and the through holes 1 are closed while the pipes C are inserted. Complete the construction of the hole closing jig A.
[0031]
[Other Embodiments]
1) In the above embodiment, as shown in FIG. 10 (a), the long side divided frame member 12 of one intermediate assembly A1 and the other intermediate assembly frame A2 is the same length, and the through hole 1 Although what comprised the cyclic | annular holding | maintenance frame 10 corresponding to five sets of piping C ... penetrated was demonstrated, this invention is not limited to this, For example, five sets of cyclic | annular holding | maintenance frames 10 penetrate the through-hole 1. When the pipes corresponding to the pipes C are taken as an example, as shown in FIG. 10 (b), the number of the pipes C inserted into the through holes 1 is divided into long sides corresponding to four sets. combined with the frame member 12 one way assembly frame A1 with, the other with a long side divided frame member 12 of the four sets of the piping C ... corresponds to the length of insertion into the through-hole 1 and a middle assembling frame A2 Thus, the annular holding frame 10 is configured or inserted into the through hole 1 as shown in FIG. Two sets of the piping C ... One way assembly frame A1 with long side divided frame member 12 of a length corresponding to the long side divided in length corresponding to the three sets of pipe C ... inserted through the through hole 1 Combining the other halfway assembly frame A2 using the frame member 12 to form the annular holding frame 10, or as shown in FIG. 11 (d), it corresponds to three sets of pipes C inserted through the through hole 1. and one end side assembly frame A1 with long side divided frame member 12 of a length, the long sides of a length corresponding to the two pairs of pipe C ... inserted through the through-hole 1 divided frame member 12 the other end with A long-side divided frame member having a length corresponding to four sets of pipes C inserted through the through hole 1 as shown in FIG. 12 and one way assembly frame A1 with a long side portion of length corresponding to a set of pipe C ... inserted through the through hole 1 In combination with other middle assembly A2 using the frame member 12 as saying that constitute the annular holding frame 10, the length length of side divided frame member 12 of the one way assembly frame A1 and the other way assembly frame A2 The annular holding frame body 10 corresponding to the five sets of pipes C... Inserted through the through hole 1 may be configured using different ones. In this case, diversification of usage forms can be achieved.
Here, the annular holding frame body 10 of each of the above-described embodiments has been described as corresponding to the five sets of pipes C inserted through the through-hole 1. However, this corresponds to the size of the annular holding frame body 10 and the through-holes. The relationship of the number of pipes C inserted into 1 is described by showing a specific example, and even if the number corresponds to a number of pipes C less than five sets, the number of pipes C is larger than five sets. It may correspond to the pipes C ... Similarly, the length and height of the long side divided frame members 12 and 12 and the short side divided frame members 11 and 11 constituting the annular holding frame body 10 can be set freely. It is.
As described in the embodiment, the lid 30 may be one that bisects the length in the longitudinal direction of the annular holding frame 10, but corresponds to the length of the long side divided frame member 12. You may use what was formed in the length to do.
[0032]
2) In the above-described embodiment, the six communication parts D1... Constituting the communication part D are formed in a line along the longitudinal direction of the internal flange part 12G. However, the present invention is not limited to this. The number of communication portions D1 may be six or more or six or less, and even in the arrangement state, a plurality of communication portions D1... Are arranged in a staggered manner along the internal flange portion. Further, the cutout shape is not limited to the rectangular shape shown in the figure, and may be a slit-like long hole shape, a round hole shape, a lattice hole shape, a wave hole shape, or the like.
[0033]
3) In the above embodiment, the example in which the respective members are connected by the screwing relationship between the tapping screw T and the tap holes 11d, 11d, 12a, and 12e is shown. The members may be connected to each other by, for example, a screwing relationship or a screwing relationship between a screwed screw hole and a screw. Moreover, the structure which forms the bolt insertion hole in a connection part, and takes a bolt and a nut and implements connection between members may be sufficient.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a through hole closing jig according to an embodiment to which the present invention is applied. FIG. 2 is an exploded perspective view showing a state before an annular holding frame is assembled to a structure. FIG. 4 is a simplified perspective view showing a state in which a through-hole is inserted into a through-hole of a structure. [FIG. 5] A simplified longitudinal sectional view showing a state in which an annular holding frame is attached and fixed corresponding to a through hole of a structure. [FIG. 6] A heat-resistant filler is provided between the annular holding frame and a long inserted article. simplified vertical sectional view showing the filled state [7] and the short sides divided frame member of the heat-resistant filler simplified longitudinal sectional view showing a state in which the connecting cover body to an annular support frame filled with 8 annular holding frame shows a long side divided frame member, and a schematic sectional view showing a connecting structure between a long side divided frame member (a) is a state before coupling Sectional view (b) of the short side divided frame member of the longitudinal section 9 annular holding frame showing a connection state and a long side divided frame member, and a schematic plan showing a coupling structure between a long side divided frame member [Fig. 10] A simplified plan view in which the short-side divided frame member is connected to the one-end assembly frame. (A) shows the length of the long-side divided frame member and the short-side divided frame member and the number of pipes. (B) is a simplified plan view showing an annular holding frame having a 2.5 to 2.5 correspondence relationship with the length of the long side divided frame member and the short side divided frame member, and the number of pipes. (C) is a simplified plan view showing an annular holding frame having a four-to-one correspondence relationship. The correspondence relationship between the length of the long-side divided frame member and the short-side divided frame member and the number of pipes is 3 relative to 2 simplified plan view of the annular holding frame configured in [11] one way assembly frame, easy to short sides divided frame member is connected Plan view (d) is the length of the long side divided frame member and a short side divided frame member, simplified plan view of the annular holding frame corresponding relationship between the number of the pipe is formed in 2 to 3 (e) FIG. 12 is a simplified plan view showing an annular holding frame in which the correspondence between the lengths of the long-side divided frame member and the short-side divided frame member and the number of pipes is configured to be 1: 4. Simplified vertical cross section showing the closing jig 【Explanation of symbols】
A Through-hole closing jig A1 One half assembly frame A2 The other half assembly frame B Structure (concrete frame)
B1 Outer surface of structure C Long object (pipe)
D communicating part D1 communicating hole 1 through hole 1a opening peripheral edge 10 annular holding frame 10A opening part 11 short side divided frame member 12 long side divided frame member 13 internal flange part 20 heat resistant filler 30 lid

Claims (2)

The long side divided frame member and the short side divided frame member are divided and configured to be assembled into a frame shape having an inner size larger than the opening size of the rectangular through hole formed in the structure , and the through An annular holding frame that is attached to the outer surface of the structure in a state where it can be externally mounted on one or a plurality of long objects to be inserted through the hole, an inner peripheral surface of the annular holding frame, and an outer periphery of the long inserted object A heat-expandable heat-resistant filler filled in a state of closing the opening of the through-hole between the surface and the bottom surface of the annular holding frame , the hole being more open than the peripheral edge of the through- hole. A through-hole closing jig provided with an internal flange portion that receives the heat-resistant filler in a state of projecting to the center side ,
A through-hole closing jig in which 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 composed of communication holes formed at a plurality of locations in the longitudinal direction of the internal flange part, and each communication hole is formed from a position facing the outer surface of the structure to a position facing the through hole. The through hole closing jig according to claim 1 .

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