JP2021016399A - Fireproof member, fireproof structure and construction method of fireproof structure - Google Patents

Abstract

To provide a fireproof member which has preferable construction work.SOLUTION: A fireproof member 1 is a member arranged on an open hole which is formed of a partition part of a floor or the like, and closes a gap between an open hole and a pipeline inserted into the open hole. A main body part 3 is formed by integrating, mainly, a core material 7, a first seal member 9, a metal sheet 11, and a thermal expansion member 13 or the like. On a part of a circumferential direction of the main body part 3, a split part 17 is provided. The main body part 3 is formed into an almost cylindrical shape in the whole body by closing and rounding the split part 17. A second seal member 5 can be inserted into an inner peripheral side of the main body part 3 in the almost cylindrical shape. Namely, the second seal member 5 can be detachably fitted to the main body part 3. The second seal member 5 has a hole 19 into which a pipeline is inserted on a center thereof, and has no split part and is formed into an annular member.SELECTED DRAWING: Figure 1

Description

The present invention relates to a fireproof member or the like for ensuring fireproof performance for a penetrating portion such as a pipe penetrating a floor.

In buildings, etc., piping, etc. may be laid in each room partitioned by the compartment. In this case, for example, if a fire breaks out in one room, the fire may spread to the entire building through a through hole through which a pipe or the like penetrates, causing enormous damage. For this reason, a method of using a thermal expansion member to close the through hole by expansion of the thermal expansion member is adopted in the event of a fire.

For example, there is a method of using an amorphous filler such as putty or mortar in the gap between the outer peripheral surface of the pipe and the inner peripheral surface of the through hole. However, since putty and mortar are not easy to handle, there is a problem that the workability at the site is poor and the construction takes time.

On the other hand, a fireproof member in which a thermal expansion member and a seal member for blindfolding are combined and integrated has been proposed. For example, a thermal expansion member is arranged on one end side of the heat expansion member and the holding member (core material), and on the other end side of the holding member (core material), a sealing member is provided on the inner peripheral side and the outer peripheral side, respectively. A fireproof member in which the above is arranged has been proposed (Patent Document 1).

JP-A-2019-52746

FIG. 8A is a diagram showing a process of installing the conventional refractory member 100. The fireproof member 100 is composed of a core material 107, a thermal expansion member 113, an inner peripheral side sealing member 105, an outer peripheral side sealing member 109, and the like.

The core material 107 is formed in a net shape by a metal wire. The thermal expansion member 113, the inner peripheral side sealing member 105, and the outer peripheral side sealing member 109 are held by the core material 107. The thermal expansion member 113 is arranged below the core material 107, and the inner peripheral side sealing member 105 and the outer peripheral side sealing member 109 are held by the core material 107 above the thermal expansion member 113. Further, a metal film is attached to the outer peripheral surface of the thermal expansion member 113.

The core material 107 is formed in a substantially tubular shape. The upper end of the core member 107 is bent outward in a flange shape. A rubber inner peripheral side sealing member 105 is arranged on the inner peripheral side of the core material 107 so as to sandwich the core material 107, and a rubber outer peripheral side sealing member 109 is arranged on the outer peripheral side of the core material 107. Ru.

When arranging the fireproof member 100 in the through hole 125 formed in the floor 123, first, the pipe 131 is arranged in the through hole 125. Next, as shown in FIG. 8B, the refractory member 100 is inserted into the gap between the outer surface of the pipe 131 and the inner surface of the through hole 125 from above the floor 123. By forming a split portion in the fireproof member 100 along the axial direction, the split portion can be opened and the fireproof member 100 can be arranged on the outer periphery of the pipe 131 from the side of the pipe 131.

At this time, the flange-shaped upper end of the core material 107 comes into contact with the upper surface of the floor 123 to prevent the refractory member 100 from falling off. Further, in the event of a fire, the thermal expansion member 113 expands to close the through hole and suppress the spread of fire. Further, in a normal state, the gap between the through hole 125 and the pipe 131 is surely closed by the elastic deformation of the rubber inner peripheral side sealing member 105 and the outer peripheral side sealing member 109, so that the blindfold can be performed.

In this way, by using the refractory member in which the thermal expansion member and the inner and outer sealing members are integrated, the gap between the outer peripheral surface of the pipe and the inner peripheral surface of the through hole can be created simply by inserting the refractory member into the through hole. It can be buried to obtain fire resistance. Therefore, it is not necessary to fill the irregular-shaped filler between the outer peripheral surface of the pipe or the like and the inner peripheral surface of the through hole, which improves the on-site construction work and shortens the construction time.

However, as an example of installing the pipe in the through hole penetrating the floor, for example, a structure such as a barrier-free unit bath may be installed on the floor so as to cover the through hole. In this case, the fireproof member cannot be inserted from above the through hole after the pipe is first arranged in the through hole.

FIG. 9A is a diagram showing a state in which the refractory member 100 is installed in the through hole 125 of the floor 123 and the structure 127 is installed above. In the structure 127, a pipe connection portion 129 such as a drain port is arranged at a predetermined position. For example, in the case of a barrier-free unit bus or the like, a plurality of pipe connection portions 129 are arranged.

In this case, first, the refractory member 100 is installed in all the through holes 125 of the floor 123. After that, the structure 127 is installed on the floor 123 so that the position of the pipe connection portion 129 of the structure 127 is aligned with the through hole 125. At this time, a part of the inner peripheral side seal member 105 is elastically deformed and comes into close contact with the outer periphery of the pipe connecting portion 129.

Next, as shown in FIG. 9B, the pipe 131 is connected to the pipe connection portion 129 from below the floor 123. From the above, a fireproof structure can be obtained. At this time, a part of the inner peripheral side sealing member 105 is elastically deformed and comes into close contact with the outer periphery of the pipe 131, so that the gap can be reliably filled.

However, when the pipe 131 is connected to the pipe connection portion 129 after the structure 127 is arranged, a part of the pipe connection portion 129 is hidden by the inner peripheral side seal member 105, so that the pipe connection portion 129 It is difficult to grasp the position. As described above, in order to surely fill the gap, the inner peripheral side seal member 105 is an elastic body and is designed to have an inner diameter smaller than that of the pipe 131 and the pipe connection portion 129. Therefore, the pipe connection portion 129 is provided from below. It becomes difficult to see.

Further, if the pipe 131 is forcibly connected to the pipe connection portion 129, a part of the inner peripheral side seal member 105 may be sandwiched between the pipe 131 and the pipe connection portion 129. If the inner peripheral side seal member 105 is sandwiched between the connection portion between the pipe 131 and the pipe connection portion 129 in this way, it causes leakage of the fluid flowing in the pipe 131.

Further, an adhesive is usually applied to the connection portion between the pipe 131 and the pipe connection portion 129. However, the adhesive applied to the pipe connecting portion 129 or the pipe 131 adheres to the inner peripheral side sealing member 105, which makes the connecting work difficult.

The present invention has been made in view of such a problem, and an object of the present invention is to provide a fireproof member or the like having good workability in construction.

In order to achieve the above-mentioned object, the first invention is a fireproof member arranged between a through hole formed in a compartment and a long body inserted into the through hole, and has a substantially tubular shape. The heat of the core material, the first seal member on the outer surface side of the core material and arranged on one end side, and the heat arranged on the outer surface side of the core material and on the other end side. The second seal is provided with a main body portion including an inflatable member, and a second seal member that can be inserted inside the substantially tubular main body portion and has a hole through which the elongated body penetrates. The member is a fireproof member that is removable from the main body.

A flange portion having a large outer diameter of the first sealing member and the core material is formed on the one end side of the main body portion, and the core material overlaps with the first sealing member at the flange portion. In a plan view, it is desirable that the core material does not protrude toward the circumferential end portion and the outer peripheral side of the first seal member.

A support portion may be formed on the inner surface of the main body portion so as to project toward the center of the main body portion and support the second seal member.

In this case, the support portion includes a first support portion that functions when the second seal member is inserted from the one end portion side of the main body portion, and the other end portion side of the first support portion. It may have a second support portion which is formed in the main body portion and functions when the second seal member is inserted from the other end side of the main body portion.

A part of the main body in the circumferential direction has a split portion, and by closing and rolling the split portion, the whole body has a substantially tubular shape, and the second seal member is an annular shape having no split portion. May be good.

A metal sheet may be attached to the other end side of the main body portion, and the metal sheet may be folded back from the outer surface side to the inner surface side of the main body portion.

According to the first invention, since a fireproof structure can be obtained without using mortar or the like, workability is excellent. In particular, by making the second seal member removable from the main body portion, the pipe connection portion and the like can be easily visually recognized from under the floor, for example, in a state where the main body portion is attached to the through hole. Further, since the second seal member can be installed after the connecting work of the piping or the like, the connecting work of the piping or the like is easy. Further, the second seal member can surely fill the gap between the pipe and the through hole.

Further, by forming the flange portion on one end side of the main body portion, the flange is caught on the edge portion of the through hole when installed in the through hole, so that the main body portion is prevented from falling out from the through hole. be able to. Further, in the plan view of the flange portion, by preventing the core material from protruding from the outer peripheral side or the peripheral end portion of the first seal member, it is possible to prevent the operator from touching the tip of the metal wire and to make it safe. Can be handled.

Further, by forming a support portion protruding in the central direction of the main body portion on the inner surface of the main body portion, it is possible to prevent the second seal member from falling off from the main body portion.

In this case, when the support portion inserts the first support portion that functions when the second seal member is inserted from one end side of the main body portion and the second seal member from the other end side of the main body portion. If both the second support portion and the second support portion functioning to function are provided, it is possible to prevent the second seal member from falling off from the main body portion when the second seal member is inserted from any direction of the main body portion. .. ..

In addition, it is easy to handle by providing a split portion in the main body portion. Further, if the second seal member is an annular shape having no split portion, the gap between the pipe and the through hole can be reliably filled.

Further, by attaching a metal sheet to the other end side of the main body portion and folding the metal sheet from the outer surface side to the inner surface side of the main body portion, the thermal expansion member can be protected during handling and the thermal expansion member can be protected. Even during expansion, the metal sheet can prevent the thermal expansion member from falling off.

The second invention is a fireproof structure using a fireproof member according to the first invention, wherein a through hole formed in a compartment, a long body inserted through the through hole, and the long body A structure that is connected and arranged so as to cover the compartment is provided, the main body is inserted into the through hole, and the second seal member is formed with the elongated body. It is a fireproof structure characterized by being inserted between the main bodies.

A third invention is a method for constructing a fireproof structure using a fireproof member according to the first invention, in which the main body portion is inserted into a through hole formed in the compartmental portion from one side of the compartmentalized portion. A step of installing a structure so as to cover one side of the section, a step of connecting a long body to the structure from the other side of the section, and a step of connecting the other side of the section. A method of constructing a fireproof structure, which comprises a step of inserting the second seal member between the long body and the main body from the side.

According to the second and third inventions, the fireproof structure can be easily constructed.

According to the present invention, it is possible to provide a fireproof member or the like having good workability.

An exploded perspective view showing the refractory member 1. Top view of the main body 3. FIG. 2 is a cross-sectional view taken along the line AA of FIG. The figure which shows the construction process of the refractory structure using the refractory member 1. The figure which shows the construction process of the refractory structure using the refractory member 1. The figure which shows the construction process of the refractory structure using the refractory member 1. The figure which shows the other construction process of the refractory structure using the refractory member 1. The figure which shows the construction process of the refractory structure using the conventional refractory member 100. The figure which shows the other construction process of the refractory structure using the conventional refractory member 100. The figure which shows the refractory member 1 other form.

Hereinafter, embodiments of the present invention will be described in detail. FIG. 1 is an exploded perspective view showing the refractory member 1 according to the present invention. The fireproof member 1 is mainly composed of a main body portion 3, a second seal member 5, and the like. The refractory member 1 is a member mainly arranged in a through hole formed in a compartment such as a floor, and closes between the through hole and a long body inserted into the through hole.

The main body 3 is mainly composed of a core material 7, a first seal member 9, a metal sheet 11, a thermal expansion member 13, and the like, and the whole body is integrally formed. A split portion 17 is provided in a part of the main body portion 3 in the circumferential direction. The main body 3 has a substantially tubular shape as a whole by closing and rolling the split portion 17.

The second seal member 5 can be inserted into the inner peripheral side of the substantially tubular main body portion 3. That is, the second seal member 5 is removable from the main body 3. The second seal member 5 is an annular member having a hole 19 through which a long body penetrates in the center and having no split portion. The second seal member 5 is an elastic member, and a foam such as a flame-retardant sponge can be applied.

The core material 7 is made of, for example, a net-like member made of a metal wire or a plate-like member having holes, and can be formed in a substantially tubular shape. The core material 7 is a member for holding the shape of the main body 3 and holding the thermal expansion member 13 and the first seal member 9. Further, when the main body portion 3 is inserted into the through hole, the rigidity of the core material 7 can improve the insertion workability without excessively deforming the main body portion 3.

The first seal member 9 is arranged on the outer surface side of the core material 7 when it is formed into a tubular shape, and on one end side (upper side in the drawing) in the axial direction. Similarly, the thermal expansion member 13 is arranged on the outer surface side of the core material 7 and on the other end side (lower part in the drawing) of the core material 7. The first seal member 9 and the thermal expansion member 13 are held by the core material 7.

The first seal member 9 is an elastic member, and a foam such as a flame-retardant sponge can be applied. A flange portion 15 is formed on one end side of the main body portion 3 (upper in the drawing and on the first seal member 9 side). The flange portion 15 is formed by bending the first sealing member 9 and the core member 7 outward. That is, the flange portion 15 is a member in which the outer diameters of the first seal member 9 and the core member 7 are larger than those of the portions other than the flange portion 15.

FIG. 2 is a plan view of the main body 3. In the flange portion 15, the outer diameter of the first sealing member 9 is larger than the outer diameter of the core material 7. Further, in the flange portion 15, the circumferential length of the first seal member 9 is longer than the circumferential length of the core member 7. Therefore, in the flange portion 15, the core material 7 overlaps with the first seal member 9, and the core material 7 protrudes toward the circumferential end portion (split portion 17 side) and the outer peripheral side of the first seal member 9 in a plan view. There is no.

By doing so, the tip of the metal member constituting the core member 7 does not get caught in another member when the main body portion 3 is handled. In addition, it is safe because it is possible to prevent the operator from accidentally touching the end portion of the metal member during the work.

FIG. 3 is a cross-sectional view taken along the line AA of FIG. As described above, the thermal expansion member 13 is arranged below the first seal member 9. Further, a metal sheet 11 is attached to the other end side of the main body 3 (lower part in the drawing and the thermal expansion member 13 side) so as to cover the thermal expansion member 13. The metal sheet 11 has a role of protecting the thermal expansion member 13 and regulating the expansion direction at the time of thermal expansion of the thermal expansion member 13 to support the thermal expansion member 13. Further, the metal sheet 11 functions as a heat conductive member, and in the event of a fire, the metal sheet 11 can uniformly conduct heat to the entire thermal expansion member 13 to expand it.

The metal sheet 11 is folded back from the outer surface side to the inner surface side at the lower end of the main body 3. At this time, the metal sheet 11 is arranged on the outer surface side of the main body 3 so as to cover the entire thermal expansion member 13. Further, on the inner surface side of the main body portion 3, the metal sheet 11 is arranged so as to cover a part of the thermal expansion member 13. That is, the metal sheet 11 has a longer folded length (larger covering area) on the outer surface side than on the inner surface side. The lower end of the core material 7 is covered with the metal sheet 11 and is not exposed.

The method of attaching the metal sheet 11 does not have to be as described above. Further, the metal sheet 11 is not always essential, and the thermal expansion member 13 may be exposed when it is not necessary.

As described above, the core material 7 is arranged on the inner peripheral side of the first seal member 9 and the thermal expansion member 13. By doing so, since the contact portion with the through hole is not the core material 7 but the first seal member 9, the main body portion 3 can be reliably brought into close contact with the inner surface of the through hole. Further, when the thermal expansion member 13 expands, the thermal expansion member 13 passes through the core material 7 and expands in the central direction, so that the core material 7 functions as a support member for the expanded thermal expansion member 13. be able to.

Further, a part of the metal member (for example, a metal wire) constituting the core material 7 is bent toward the center of the main body portion 3 to form the support portion 21. That is, the support portion 21 projects toward the center of the main body portion 3 on the inner surface of the main body portion 3. A plurality of support portions 21 are arranged at substantially the same position from one end of the main body portion 3 at predetermined intervals in the circumferential direction. The support portion 21 supports the second seal member 5 by preventing the second seal member 5 from falling off from the main body portion 3 when the second seal member 5 is inserted into the substantially tubular main body portion 3. Has the function of

In the present embodiment, the support portion 21 has a first support portion 21a arranged on one end side (flange portion 15 side) of the main body portion 3 and the other end side (thermal expansion member) of the first support portion 21a. It has a second support portion 21b arranged on the 13 side). The first support portion 21a supports the second seal member 5 when the second seal member 5 is inserted from the flange portion 15 side of the main body portion 3. Further, the second support portion 21b supports the second seal member 5 when the second seal member 5 is inserted from the lower end side of the main body portion 3. In addition, only one of the support portions may be used.

Next, a method of constructing a fireproof structure using the fireproof member 1 will be described. 4 to 6 are views showing a construction process of a fireproof structure. Here, in the following description, an example in which the partition portion is the floor 23 will be shown, and an example in which the long body inserted through the through hole 25 is the pipe 31 will be described. In the present invention, the floor also includes a floor when viewed from downstairs.

As shown in FIG. 4A, a through hole 25 is formed in the floor 23. First, the main body 3 is inserted into the through hole 25 formed in the floor 23 with the thermal expansion member 13 facing downward from above the floor (arrow B in the figure). At this time, by rolling the main body 3 into a substantially tubular shape, the main body 3 can be brought into close contact with the inner surface of the through hole 25 or the like. Further, since the flange portion 15 has a larger outer diameter than the through hole 25 and comes into contact with the upper surface of the floor 23, the main body portion 3 does not fall out from the through hole 25 downward.

Here, as shown in FIG. 2, the core material 7 is not provided at both ends (split portions 17) of the main body portion 3 in the circumferential direction. Therefore, when the circumferential ends of the main body 3 are abutted by the split portion 17, the diameter of the main body 3 can be adjusted to some extent by the elastic deformation of the first seal member 9. For example, even if the through holes 25 have the same nominal diameter, the actual inner diameter differs slightly depending on the processing method. Therefore, it is possible to cope with the variation in the diameter of the through hole 25 by utilizing the elastic deformation of the first seal member 9 without forming the core material 7 to the end portion in the circumferential direction.

Next, the structure 27 is installed on the floor 23 (arrow C in the figure). In the present embodiment, the structure 27 is, for example, a barrier-free unit bath. In this case, a plurality of through holes 25 are formed in the floor 23, and the structure 27 is placed on the floor 23 so that the positions of the plurality of pipe connection portions 29 of the structure 27 match the positions of the respective through holes 25. Placed on top. That is, the upper part of the floor 23 is covered with the structure 27.

Next, as shown in FIG. 5, the pipe 31 is prepared below the through hole 25. At this time, the pipe 31 is inserted into the hole 19 of the second seal member 5 (arrow D in the figure). Since the inner diameter of the hole 19 is slightly smaller than the outer diameter of the pipe 31, the second seal member 5 comes into close contact with the pipe 31 due to the elastic deformation of the second seal member 5. At the time of connecting the pipe 31, the second seal member 5 is retracted to the base side (lower part in the drawing) of the pipe 31 so as not to interfere with the connecting work.

Next, an adhesive is applied to the pipe connection portion 29, and as shown in FIG. 6A, the pipe 31 is connected to the structure 27 from below the through hole 25. By retracting the second seal member 5, the pipe connection portion 29 can be easily visually recognized from below the through hole 25. Therefore, the connection between the pipe 31 and the pipe connection portion 29 is easy.

Next, as shown in FIG. 6B, the second seal member 5 is moved along the pipe 31 from below the through hole 25, and the second seal member 5 is placed between the pipe 31 and the main body 3. Insert into (arrow E in the figure). At this time, since the outer diameter of the second seal member 5 is slightly larger than the inner diameter of the main body portion 3, the second seal member 5 comes into close contact with the inner surface of the main body portion 3 due to the elastic deformation of the second seal member 5.

Further, as described above, the second support portion 21b is arranged on the inner surface of the main body portion 3. Therefore, by pushing the second seal member 5 into the main body 3 up to above the second support 21b, it is possible to prevent the second seal member 5 from falling off from the main body 3. Since the second support portions 21b are arranged at a plurality of locations in the circumferential direction, it is possible to prevent the second seal member 5 from being inserted diagonally.

From the above, the refractory structure 30 using the refractory member 1 can be obtained. That is, the pipe 31 is inserted into the through hole 25, the structure 27 arranged so as to cover the floor 23 is connected to the pipe 31, the main body 3 is inserted into the through hole 25, and the second A fireproof structure 30 in which the seal member 5 is inserted between the pipe 31 and the main body 3 can be obtained.

As described above, according to the refractory member 1 according to the present embodiment, the refractory structure 30 can be easily obtained without using mortar or the like. Further, even when the structure 27 is installed above the floor 23 and the floor 23 is covered, the pipe 31 can be easily connected to the structure 27, and the through hole 25 and the pipe 31 can be reliably connected. Can fill the gap between and.

Further, in the flange portion 15, since the size of the first sealing member 9 is larger than that of the core material 7, the core material 7 does not protrude to the outer peripheral side or the peripheral end portion of the first sealing member 9. Therefore, it is safe and easy to handle. Further, since the core material 7 does not come into contact with the floor 23 when attached to the through hole 25, the floor 23 is not damaged and the first seal member 9 can be brought into close contact with the floor 23.

Further, by providing the split portion 17 in the main body portion 3, the attachment work is easy, and since the core material 7 is not arranged in the split portion 17, the through hole 25 is slightly deformed due to the elastic deformation of the first seal member 9. It is also possible to deal with size variations. On the other hand, since the second seal member 5 has an annular shape having no split portion, it can be brought into close contact with the outer periphery of the pipe 31 to reliably fill the gap.

Further, by forming the second support portion 21b on the inner surface side of the main body portion 3, it is possible to prevent the second seal member 5 from falling off from the main body portion 3 when the second seal member 5 is inserted into the main body portion 3. Can be squeezed.

Further, the metal sheet 11 can protect the thermal expansion member 13. Further, since the metal sheet 11 has high thermal conductivity, heat can be transferred to the entire thermal expansion member 13 in a short time in the event of a fire. Further, when the thermal expansion member 13 expands, the metal sheet 11 on the inner surface side is deformed toward the center of the through hole 25 to become a receiving portion, and the thermal expansion member 13 can be suppressed from falling off after expansion.

The present invention is not limited to the above-described embodiment. For example, although the example of the floor 23 is shown as a partition portion, the fireproof member 1 can be applied to a wall or the like. Further, although an example of the pipe 31 is shown as a long body to be inserted through the through hole 25, it may be an electric wire. That is, the structure 27 is not limited to the barrier-free unit bath, and the effect of the present invention can be effectively obtained as long as it covers the section. In this case, first, the main body 3 is inserted into the through hole 25 formed in the compartment from one side of the compartment, and the structure 27 is installed so as to cover one side of the compartment. After connecting the long body to the structure 27 from the other side of the portion, the second seal member 5 may be inserted between the long body and the main body portion 3.

Further, when the structure 27 is not arranged, the refractory member 1 can be used in the same manner as before. For example, as shown in FIG. 7A, when the pipe 31 is inserted through the through hole 25 of the floor 23, the main body 3 is inserted into the through hole 25 from above the floor 23, and then FIG. As shown in (b), the second seal member 5 may be inserted from above the floor 23 (arrow F in the figure). In this case, the second seal member 5 may be inserted into the main body 3 until it comes into contact with the first support 21a. In addition. In this case, the work can be facilitated by forming the split portion also on the second seal member 5.

Further, the first seal member 9 may be made relatively hard and the second seal member 5 may be made relatively soft. By making the first seal member 9 stiff, the main body 3 does not slip easily when installed in the through hole 25. On the other hand, if the second seal member 5 is soft, the pipe 31 and the main body 3 can be reliably brought into close contact with each other, and the resistance when the second seal member 5 is inserted into the main body 3 while being deformed can be reduced. Further, even if the central axis of the pipe 31 and the center of the through hole 25 are slightly deviated from each other and the gap between the pipe 31 and the main body 3 is not constant depending on the position, the gap can be reliably closed by the deformation of the second seal member 5. it can.

Further, when the split portion is formed in the main body portion 3, the main body portion 3 can be manufactured in a long length and cut according to the size of the through hole for use. Further, the main body portion 3 may be formed in an annular shape without forming a split portion.

Further, the main body portion 3 is not formed integrally as a whole, but may be divided into a plurality of parts in the circumferential direction. For example, it may be divided into two in the circumferential direction as in the main body portion 3a shown in FIGS. 10 (a) and 10 (b). Even in this case, the second seal member 5 may be an annular shape continuous in the circumferential direction.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the technical scope of the present invention does not depend on the above-described embodiments. It is clear that a person skilled in the art can come up with various modifications or modifications within the scope of the technical ideas described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs.

1 ………… Fireproof member 3 ………… Main body 5 ………… Second seal member 7 ………… Core material 9 ………… First seal member 11 ………… Metal sheet 13 ………… Thermal expansion member 15 …… … Flange portion 15a ……… Cylindrical portion 17 ……… Split portion 19 ……… Hole 21 ……… Support portion 21a ……… First support portion 21b ……… Second support portion 23 ……… Floor 25… …… Through hole 27 ………… Structure 29 ………… Piping connection 30 ………… Fireproof structure 31 ………… Piping 100 ………… Fireproof member 105 ………… Inner peripheral side seal member 107 ………… Core material 109 ……… Outer peripheral side seal member 113 ………… Thermal expansion member 123 ………… Floor 125 ………… Through hole 127 ………… Structure 129 ………… Piping connection 131 ………… Piping

Claims (8)

A refractory member arranged between a through hole formed in a compartment and a long body inserted into the through hole.
Approximately tubular core material and
The first seal member, which is on the outer surface side of the core material and is arranged on one end side,
A thermal expansion member arranged on the outer surface side of the core material and on the other end side,
The main body equipped with
A second seal member that can be inserted inside the substantially tubular body and has a hole through which the elongated body penetrates.
Equipped with
The second seal member is a refractory member that can be attached to and detached from the main body. On the one end side of the main body portion, a flange portion having a large outer diameter of the first sealing member and the core material is formed.
The claim is characterized in that, in the flange portion, the core material overlaps with the first seal member, and the core material does not protrude to the circumferential end portion and the outer peripheral side of the first seal member in a plan view. The fireproof member according to 1. The fireproof member according to claim 1 or 2, wherein a support portion that projects toward the center of the main body portion and supports the second seal member is formed on the inner surface of the main body portion. The support portion
A first support portion that functions when the second seal member is inserted from the one end side of the main body portion,
A second support portion formed on the other end side of the first support portion and functioning when the second seal member is inserted from the other end side of the main body portion.
The fireproof member according to claim 3, wherein the refractory member has. A split portion is provided in a part of the main body portion in the circumferential direction, and by closing and rolling the split portion, the whole body becomes substantially tubular.
The fireproof member according to any one of claims 1 to 4, wherein the second seal member is an annular shape having no split portion. Claims 1 to 1, wherein a metal sheet is attached to the other end side of the main body portion, and the metal sheet is folded back from the outer surface side to the inner surface side of the main body portion. The fireproof member according to any one of 5. A fireproof structure using the fireproof member according to any one of claims 1 to 6.
Through holes formed in the compartment and
A long body inserted through the through hole and
A structure connected to the elongated body and arranged so as to cover the compartment,
Equipped with
A fireproof structure characterized in that the main body portion is inserted into the through hole and the second seal member is inserted between the long body and the main body portion. A method for constructing a fireproof structure using the fireproof member according to any one of claims 1 to 6.
A step of inserting the main body into a through hole formed in the compartment from one side of the compartment.
The process of installing the structure so as to cover one side of the compartment,
A step of connecting a long body to the structure from the other side of the compartment,
A step of inserting the second seal member between the long body and the main body from the other side of the compartment.
A method of constructing a fireproof structure, which is characterized by being provided with.

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