JP2006176987A - Thermally expansible fire-preventive attachment, and fire protection construction using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thermally expansible fire-preventive attachment which is attachable to a fire-preventive object portion having a different through hole length or a different external diameter of a pipe body, facilitates attachment thereof to the fire-preventive object portion, ensures fire prevention of the fire-preventive object portion, and exerts high reliability of fire prevention, and to provide a fire protection construction using the fire-preventive attachment. <P>SOLUTION: The thermally expansible fire-preventive attachment A is attached to a gap between the through hole 1 formed in a fire compartment and an outer peripheral surface 1a of the pipe body 2 inserted into the through hole 1. The attachment is attachable to the outer peripheral surface 2a of the pipe body 2, and formed of a thermally expansible heat resisting sealing material A1 which is spirally formed in a manner elastically deformable in a diameter contracting direction against elastic restoring force. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention provides pipes (flammable synthetic resin pipes such as polyvinyl chloride pipes and polyethylene pipes, electric cables, etc.) through through-holes formed in fireproof compartments (for example, refractory structure floors and walls). The present invention relates to a heat-expandable fireproof fitting used for arranging a pipe-like body such as a protective tube (saya tube) made of synthetic resin through which one or more pipes are inserted. A heat-expandable fireproof mounting device made of a spiral heat-expandable material that can be mounted in an outer-fitting state against the restoring force against the outer peripheral surface of the tube-like body disposed in the through-hole, and It relates to a fire prevention structure using it.

In a building such as a building, a thermal expansion material is interposed between the inner peripheral surface of a through-hole formed in a fireproof compartment consisting of a wall or floor as a housing and the outer peripheral surface of a tubular body inserted through the through-hole. In the unlikely event of fire, it expands in response to fire heat, closes the corresponding gap between the through-hole and the tube-like body, prevents the spread of fire, and fire smoke and toxic gas in the event of a fire A blocking structure is provided to prevent inflow.
As a conventional closed structure, a thermal expansion material having a circular cross-sectional shape and an inward tongue piece formed along the periphery on one end opening side is externally fitted from the tip of the tube-like body before being inserted into the through hole. It is possible to install, and if necessary, the cut line along the longitudinal direction formed on the peripheral surface is cut open, and the heat is applied to the tube-like body inserted through the through hole from the cut portions formed at both ends of the cut line. There is one that can press the expansion material and attach the thermal expansion material to the tube state in an external fitting state (see, for example, Patent Document 1).
The thermal expansion material mounted in this pipe form moves corresponding to the inside of the through hole of the fire protection compartment along the longitudinal direction of the pipe-like body, and then the through hole, the thermal expansion material, and the pipe-like body. Construction is completed by placing mortar in the gap, and it is possible to prepare for an emergency fire.

JP 2004-313393 A (page 3, FIGS. 1 and 2)

However, in a state in which this thermal expansion material is mounted on the tube-like body, the inwardly facing tongue piece is in pressure contact with the tube-like body, the holding position is held, and even in the tube-like body arranged in the vertical direction Although it has a mounting structure that does not slide down, the outer diameter of the tube-like body that can be attached is determined, for example, it was attached to a pipe-like body having a smaller diameter than the set outer diameter In this case, it can be attached in an externally fitted state, but there is no pressure contact with an inward tongue, and it can be moved with respect to the tube-like body. In the case of a tube-like body with a larger diameter than the outer diameter set on the opposite side, position maintenance by strong pressure contact of the inward tongue piece can be obtained. However, the tear line opens and the thermal expansion material corresponds to the entire circumference of the inner peripheral surface of the through hole. There there is a problem.
Therefore, in order to ensure the fire prevention of the target fire prevention part, it is necessary to have a product system that has a thermal expansion material that accurately corresponds to the length of the through hole and the outer diameter of the tube-like body in terms of dimensions. There is a problem with poor compatibility.

  The present invention has been made in view of the above circumstances, and the object of the present invention is that it is easy to quickly attach to a portion to be fire-protected with different lengths of through holes and outer diameters of tubular bodies, It is in the point which provides the fire expansion structure using the thermal expansible fireproof installation tool with high disaster prevention reliability.

  The characteristic configuration of the first thermally expandable fireproof mounting device of the present invention is a thermally expandable fireproof mounting device mounted between the through hole of the fireproof compartment and the outer peripheral surface of the tubular body inserted through the through hole. The heat-resistant heat-resistant sealing material formed in a spiral shape that can be attached to the outer peripheral surface of the tube-like body and can be elastically deformed on the reduced diameter side against an elastic restoring force. There is in point.

According to the above characteristic configuration, the thermally expandable fireproof mounting tool can be mounted in a compressed state against the outer peripheral surface of the tubular body against the elastic restoring force on the reduced diameter side.
Specifically, since the heat-expandable fireproof fitting has a spiral shape, even if the protective tube is already inserted into the through-hole of the fireproof compartment, from one end to the other end of the heat-expandable heat-resistant sealing material While being wound around the tube-like body, it can be mounted in an external fitting state in which the entire body is held by elastic force.
In addition, if the thermal expansive fireproof wearing tool used is longer than the length of the part to be fireproofed, it can be dealt with by cutting off the extra length using a normal cutting tool such as scissors or a cutter. On the other hand, if it is short, it can be dealt with by installing a new thermally expansible fireproof fitting.
In addition, since the heat-expandable heat-resistant sealing material exists continuously in a spiral shape over the entire length of the portion to be protected against fire, in the event of a fire, the thermal expansion of the heat-expandable sealing material can be performed in any portion of the portion to be protected against fire. Can be granted.

  Therefore, since the thermally expandable fireproof mounting tool can be quickly mounted on the outer peripheral surface of the tube-like body, the workability can be improved, and a thermally expandable seal is continuously mounted on the fireproof target part. Therefore, reliable disaster prevention can be built.

  The characteristic configuration of the second thermally expandable fireproof mounting device of the present invention is a thermally expandable fireproof mounting device mounted between the through hole of the fireproof compartment and the outer peripheral surface of the tubular body inserted through the through hole. A heat-expandable heat-resistant sealing material that can be attached to the inner peripheral surface of the through-hole of the fireproof compartment and that is formed in a spiral shape that can be elastically deformed on the reduced diameter side against an elastic restoring force It is in the point comprised from.

According to the above characteristic configuration, the thermally expandable fireproof mounting tool can be mounted in an expanded state against the inner peripheral surface of the through hole of the fireproof compartment against the elastic restoring force on the enlarged diameter side.
Specifically, since the heat-expandable fireproof fitting has a spiral shape, even if the protective tube is already inserted into the through-hole of the fireproof compartment, from one end to the other end of the heat-expandable heat-resistant sealing material It can be mounted in an internally fitted state in which the whole is attached by an elastic force while being installed in the through hole of the fireproof compartment.
In addition, when the thermal expansive fireproof wearing tool used is longer than the length of the fireproof target part, it can be dealt with by cutting off the extra length using a normal cutting tool such as scissors or a cutter. On the other hand, if it is short, it can be dealt with by installing a new thermally expansible fireproof fitting.
In addition, since the heat-expandable heat-resistant sealing material exists continuously in a spiral shape over the entire length of the portion to be protected against fire, in the event of a fire, the thermal expansion of the heat-expandable sealing material can be performed in any portion of the portion to be protected against fire. Can be granted.

  Therefore, since the heat-expandable fireproof fitting can be quickly mounted on the inner peripheral surface of the through-hole of the fireproof compartment, the workability can be improved and the heat-expandable seal can be continuously formed on the fireproof target portion. Since it is equipped with the corresponding, it is possible to build a reliable disaster prevention.

  As a characteristic configuration of the third thermally expansible fireproof wearing device of the present invention, the thermally expansible heat-resistant sealing material can be reduced in diameter along with deformation in the lengthwise extending direction, and can be deformed in the lengthwise contracting direction. It is possible to expand the diameter along with the deformation of the torsion in the spiral direction, and to expand the diameter in accordance with the torsional deformation opposite to the spiral direction of the both ends. In this state, the fire prevention target portion is provided with elasticity that can be mounted against an elastic restoring force.

According to the above-mentioned characteristic configuration, in the case of the mounting configuration of the part to be fired for mounting the thermally expandable fireproof mounting tool on the outer peripheral surface of the tube-like body, it corresponds to the outer diameter of the tube-like body and the through-hole of the fire-proof compartment The outer peripheral surface of the tube-like body is deformed by changing the heat-expandable fireproof fitting tool to a length slightly smaller than the outer diameter of the tube-like body, using the length of the fire-proof portion as a guide. A heat-expandable fireproof wearing tool can be attached to the.
In addition, in the case of the mounting configuration of the fire protection mode part in which the thermally expandable fireproof mounting tool is mounted on the inner peripheral surface of the through hole of the fire protection compartment, the inner diameter and length of the through hole are used as a guideline and the inner diameter of the through hole The heat-expandable fireproof mounting tool can be mounted on the inner peripheral surface of the through hole by slightly deforming the heat-expandable fireproof mounting tool to the length of the fireproof target portion.
Furthermore, even when the mounting diameter of the portion to be protected against fire is in a stepped shape or a corrugated shape, the thermally expandable fireproof mounting device can be mounted correspondingly.
Therefore, at the construction site, the heat-expandable fireproof wearing tool can be attached to the fireproof target part by deforming the heat-expandable fireproof wearing tool to the length of the fireproof target part and the mountable winding diameter by an easy operation.

  Therefore, it is possible to easily and quickly mount the thermally expandable fireproof mounting tool in an immediate manner according to the mounting form, and it is excellent in use compatibility, so that workability can be improved.

  According to a fourth aspect of the present invention, the thermally expandable heat-resistant sealing material uses an olefin resin as a base resin and an olefin plasticizer as a plasticizer, in addition to an expander. There is in point.

  According to the above characteristic configuration, since the resin component is the main component, it has good wearability due to its deformability, shape retention and elastic restoring force, and in the event of a fire, it expands thermally due to fire heat. In addition to providing reliable disaster prevention, in addition to the use of olefin-based resin agents, there is a tendency to have safety with no generation of toxic gas components even by fire heat.

  Therefore, since the product quality having disaster prevention quality can be formed while having high wearability, it is possible to improve the quality of this type of thermally expandable fireproof wearing tool.

  According to the fifth aspect of the present invention, the thermally expandable heat-resistant sealing material is formed in a belt-like spiral body, and the spiral gap along the longitudinal direction is smaller than the belt width. The point is that it is configured to be stretchable and deformable.

  According to the above characteristic configuration, the expansion of the heat-expandable heat-resistant sealing material can be effectively applied to the portion to be fire-protected as compared with the state in which the heat-expandable fireproof wearing tool is extended in the spiral gap exceeding the band width dimension. It can be used for recognizing the use limit in the stretching direction when using expansion and contraction. Here, apart from the expansion coefficient of the heat-expandable heat-resistant sealing material, the expansion volume can be increased or decreased depending on the plate thickness of the heat-expandable heat-resistant seal material. It is also possible to form a product system in which products are arranged, and it becomes possible to commercialize products with different conditions such as the diameter and length of the heat-expandable fireproof fitting.

Therefore, since the thermally expandable fireproof wearing tool can be attached to the fireproof target part in a highly reliable state, the quality of use can be improved.
In addition, when using the thermal expansion fireproof wearing device in the extending direction, the helical gap and the band width are used as a guideline because the helical gap is configured to be stretchable and deformable in a range that is smaller than the band width. Therefore, it is possible to improve usability.

  According to the sixth feature of the present invention, the through hole of the fire protection compartment is a through hole formed in a housing of the building, and the pipe-like body inserts and protects piping. It is in the point comprised from the protective tube which consists of a resin raw material.

  According to the above-mentioned characteristic configuration, in the event of a fire, fire heat is applied to the thermally expandable seal portion from the state where the protective tube portion made of resin material is softened and melted, and the thermally expandable seal portion responds Between the outer peripheral surface portion of the piping in the protective tube and the inner peripheral surface portion in the through hole.

  Therefore, it is possible to effectively prevent fire smoke or toxic gas generated by a fire from flowing into the adjacent room, and to prevent or delay the spread of fire due to the burning of the tubular body. A fireproof structure using a fireproof wearing tool can be formed.

  According to the seventh aspect of the present invention, the through-hole of the fire-resistant compartment is a protective tube made of a metal material that inserts and protects piping, and the tubular body is a protective tube. It is in the point comprised from the wirings currently penetrated.

  According to the above-described characteristic configuration, in the event of a fire, the thermal expansion seal portion, in which the protective tube made of a metal material is subjected to fire heat and thermally expanded in the tube, corresponds to the outer peripheral surface portion of the piping in the corresponding protective tube. It is inflated and filled in a pressurized state between the inner peripheral surface portion of the protective tube.

  Therefore, it is possible to effectively prevent fire smoke, toxic gas, and the like generated by the fire from flowing out from the protective tube to the outside, and to prevent or delay the spread of fire due to the combustion of the tubular body.

  According to the eighth aspect of the present invention, there is provided a fireproof structure using a thermally expandable fireproof mounting tool, wherein the thermally expandable heat-resistant sealing material is a through-hole of a fireproof compartment. It is in the point attached to the both opening edge part side of the outer peripheral surface part of the tube-like body corresponding to these both opening, or the inner peripheral surface of a through-hole.

  According to the above characteristic configuration, in the event of a fire, if the fire heat reaches the fire prevention target part, the thermal expansion fireproof fitting on the side where the heating is near is heated and thermally expanded, and the corresponding pipe-like It is inflated and filled between the outer peripheral surface of the body and the through-hole of the fire prevention compartment, and it is possible to prevent the toxic gas etc. generated by the fire from flowing into the adjacent room side, and the fire heat due to further fire progress is far Even if it reaches the side of the thermal expansible fireproof fitting, the thermal expansible fireproof fitting is subjected to heat and thermally expands between the corresponding outer peripheral surface portion of the tubular body and the fireproof compartment. While being expanded and filled, it is possible to prevent fire smoke, toxic gas, and the like caused by a fire from flowing into the adjacent room side, and it is possible to prevent or delay the spread of fire due to combustion of the tubular body.

  Therefore, it is possible to close the fire compartment without attaching a thermal expansion fire protection fitting to the entire length of the fire prevention target part, so that a reliable disaster prevention structure can be obtained and economical construction is possible. In particular, in construction sites where the tube-like body is inserted long, that is, where the fire protection part is long, the amount of use of the thermally expandable fire-fitting equipment is reduced compared to the case where it is attached to the entire length of the fire prevention part, and the economy is reduced. Is.

  Hereinafter, a thermally expandable fireproof mounting device to which the present invention is applied and a fireproof structure using the same will be described with reference to the drawings.

Embodiment
[First Embodiment]
FIGS. 1-8 is an example of a pipe-like body in the through-hole 1 formed in the frame K, such as a fire-resistant structure floor and wall, which is an example of a fire prevention compartment, and piping (for example, air conditioning piping, water supply) (Hot water supply pipe, electric cable for air conditioning control, etc.) Heat that is configured to be attachable to the outer peripheral surface 2a of the protective tube 2 corresponding to the through hole 1 with the synthetic resin protective tube 2 passed through An inflatable fireproof wearing device A is shown. In this embodiment, an example in which an air conditioning pipe 3 (covering gas pipe 3A, coating liquid pipe 3B), which is a pipe, and a cable 3C for air conditioning control are inserted into the protective pipe 2 as a set is illustrated.

  This thermally expansible fireproof fitting A is a sheet (plate or belt) having a rectangular cross section with a length and flexibility (softness) that can be wound spirally along the outer peripheral surface of the protective tube 2. The heat-expandable heat-resistant sealing material A1 can be attached to a portion to be protected against fire, which is the outer peripheral surface portion of the protective tube corresponding to the through hole, against the elastic restoring force.

In addition, the thermal expansion fire-proof wearing device A is expanded by heating at the time of an emergency fire, specifically, a heating temperature of about one hundred and several ten degrees, and is several times or more (4 to 10 in this embodiment). It is set to withstand at least one hour in a high temperature atmosphere at a fire temperature (for example, about 950 degrees).
As the foamable resin composition of this embodiment, various types have conventionally existed. For example, the heat-expandable fireproof fitting A of this embodiment includes 45% of a flame-retardant olefin resin as a base resin. About 10% flame retardant olefin plasticizer and about 45% expansion material (including filler) are used at the same time, mainly olefins that do not produce toxic substances even in combustion, As a material trend, it is a material that is flame retardant and can be plastically deformed continuously with expansion and contraction against elastic restoring force, but in the state after deformation, normal plastic deformation with elastic restoring force It has different characteristics from the material.

  Therefore, for example, as shown in FIG. 7 (B), the thermally expandable fireproof mounting device A can be deformed in a reduced diameter in accordance with the deformation in the extending direction L1 in the longitudinal direction (D1>). In (D2), as shown in FIG. 7 (a) from the state of FIG. 7 (a), the diameter can be expanded (D1 <D3) in accordance with the deformation in the contraction direction L2 in the longitudinal direction, and FIG. ) From the state shown in FIG. 8 (b), both ends can be deformed to expand in accordance with the deformation of the twist N1 in the spiral direction (D1 <D4). ), It is possible to reduce the diameter (D1> D5) in accordance with the deformation of the torsion N2 opposite to the spiral direction at both ends (D1> D5). It can be installed. Here, from the state of FIG. 7 (b), it is also possible that the diameter is reduced in accordance with the deformation in the longitudinal extension direction from the state of FIG. 7 (c) to (b) or (b). In FIG. 8 (a) or (c), it is possible to carry out diameter expansion deformation along with the deformation in the longitudinal extension direction, and from the state of FIG. 8 (c) to FIG. 8 (a) or (b). As shown in FIG. 8 (b), the both ends may be expanded in diameter along with the twisted twist in the spiral direction, as shown in FIG. 8 (b) or (c). It is also possible to reduce the diameter in accordance with the torsional deformation opposite to the above. In the drawing, D1, D2, D3, and D4 adopt the outer diameter of the heat-expandable fireproof fitting A, but the inner diameter may be adopted, and in this case, the above relationship is the same.

  Here, in this embodiment, a plastic elastomer of a flame-retardant linear low density polyethylene resin (LLDPE) is used as the olefin resin, and the expansion material is flame-retardant and foams by heating such as a fire. One kind or a mixture of known inorganic foaming agents and organic foaming agents that form volume expansion is used.

  Although not shown in the drawings, the thermally expandable fire-resistant wearing device A can be formed by, for example, cutting a tubular base material extruded into a tubular shape into a spiral shape along the longitudinal direction of the tubular material. In addition to this, it is also possible to form a strip material formed in a long shape by bending and deforming it in a spiral shape. In addition, it may be formed by an extrusion molding machine in which the extracted state is spiral.

  As shown in FIGS. 1 and 4, the heat-expandable fireproof mounting device A configured in this way has a protective tube 2 passed through the through-hole 1 already formed in the housing K, and corresponds to the through-hole 1. When mounting the thermally expandable fireproof mounting tool A of this embodiment on the fireproof target part P, which is the protective tube 2 part, from the outer peripheral surface 2a part of the protective pipe 2 corresponding to any one opening part of the through hole 1 As shown in FIGS. 2 and 5, the entire length of the thermally expandable fire-fighting attachment A is inserted into the through-hole while pushing the spiral from one end Aa to the other end Ab along the spiral against the elastic restoring force. The outer fitting is installed in the hugging state.

  Here, in the case where the thermally expandable fireproof wearing tool A to be used is longer than the length of the fireproof target part P, the excess length is cut off by using a normal cutting tool such as scissors or a cutter. On the other hand, if it is short, it can be dealt with by installing a new thermal expansile fireproof fitting A.

  Further, in the heat-expandable fireproof wearing device A, the heat-expandable heat-resistant sealing material A1 is formed in a belt-like spiral body, and is stretched and deformed within a range in which the spiral gap S1 along the longitudinal direction is smaller than the belt width S2. As a result, the expansion of the heat-expandable heat-resistant sealing material A1 effectively acts on the portion P to be protected by fire as compared with the state in which the heat-expandable fireproof mounting device A is extended in the spiral gap exceeding the width of the band. In addition, it can be used for recognizing the use limit in the extending direction when using expansion and contraction, and the use quality can be maintained. Moreover, it can be a standard within a reliable range in use.

  3 and 6 between the inner peripheral surface 1a of the through-hole 1 and the protective tube 2 to which the thermally expandable fire-proof mounting tool A is externally mounted after being mounted by such a mounting procedure. As shown, the gap space B in the through hole 1 is backfilled with mortar 4 or, although not shown, the gap space B in the through hole is backfilled with rock wool without being backfilled with mortar 4. Yes.

  With such a configuration, it is possible to mount the thermally expandable fireproof mounting tool A on the protective tube portion 2a corresponding to the inside of the through hole 1 with good workability.

  In the event of a fire, in a state where the heat of the fire has been transmitted to the protective tube 2 corresponding to the through-hole 1 of the housing, the protective tube 2 made of a resin material is softened or melted, and is subjected to heat expansion. Between the outer peripheral surface portion of the wiring 3 in the protective tube 2, the inner peripheral surface portion 4 a of the mortar 4 placed in the through hole 1, and the outer peripheral surface 3 a of the wiring 3. Thus, the through-hole 1 is closed by filling and expanding in a pressurized state.

  Therefore, the gap formed by softening or melting the protective tube 2 and the wirings 3 in the through hole 1 is blocked, and the fire spread from the protective tube 2 and the wirings 3 can be prevented or delayed.

  In addition, in the case where rock wool is backfilled in the through hole 1, in the event of a fire, in the state where fire heat is transmitted to the protective tube 2 corresponding to the through hole 1 of the housing, the resin material As the protective tube 2 made of softens, the thermally expandable seal portion that has been heated is foamed, and the space between the outer peripheral surface 3 a of the wiring 3 in the protective tube 2 and the inner peripheral surface portion 1 a of the through-hole 1 Then, the rock wool is filled in a pressurized state by being expanded in volume (thermal expansion), and the pressurized state is applied between the outer peripheral surface 3a of the wiring 3 and the inner peripheral surface portion 1a of the through hole 1. The through-hole 1 is closed by filling with volume expansion.

  By inserting the protective tube 2 and the piping 3 into the through-hole 1 in this way and closing the through-hole 1, smoke and toxic gas from the fire are transferred from the fire-side room of the fire prevention compartment to the non-fire-side room. And the like, and a fire-proof structure using the thermally expandable fire-proof fitting A capable of preventing or delaying the spread of fire due to combustion of the protective tube 2 and the piping 3 is formed. be able to.

  By the way, in the thermally expandable fireproof wearing device A, when the casing is a floor and the protective tube 2 is inserted through the through hole 1 formed in the vertical direction formed on the floor, it corresponds to the through hole 1. Since the heat-expandable fireproof fitting A is attached to the fireproof target part P, which is the protective tube part 2a, in a hugging state against the elastic restoring force, it will not slide down without permission. In addition, there is no need for a dedicated part for fixing the thermally expandable fireproof fitting A to the protective tube 1 and it is easy to handle, and the thermally expandable fireproof from either side of the floor or from the bottom of the floor. Since the mounting tool A can be mounted on the protective tube 1, the construction is excellent in workability.

Next, another mounting example of the thermally expandable fireproof mounting tool A of this embodiment will be described.
FIG. 9 shows a through-hole 1 in a state in which a pipe-like body (for example, a drainage pipe) 2 is inserted into a through-hole 1 formed in a frame K such as a floor or wall having a fireproof structure, which is an example of a fire prevention compartment. 2 shows a thermally expandable fireproof mounting tool A configured to be mountable on the outer peripheral surface 2a of the tube-like body 2 corresponding to FIG.

  The pipe-like body 2 of this mounting example is a bifurcated branch joint pipe 2B in which one end side is a straight pipe 2A and the other end side branches into the through hole 1, and the connection between one straight pipe 2A and the other branch joint pipe 2B. The part 2C is located in the through hole 1, and is a fire prevention target part P whose outer diameter varies in a stepped shape at the connecting part 2C.

  Then, the thermally expansible fireproof mounting tool A is externally mounted in a hugging state against the elastic restoring force on the fireproof target portion P. In this case, it is also possible to mount the thermally expandable fire-proof fitting A from the straight pipe 2A side to the branch joint pipe side 2B, that is, from the small diameter side to the large diameter side, or conversely from the split pipe side 2B to the straight pipe. It can be mounted from the 2A side, that is, from the large diameter side to the small diameter side.

  Thus, even in a form in which a step portion exists in the fire protection target portion P, it is possible to quickly mount the heat-expandable fireproof mounting tool A along the shape.

  Here, after mounting the thermally expansible fireproof mounting tool A, as in the first embodiment, the inner surface of the through hole 1 and the insertion portion of the tube-like body 2 corresponding to the through hole 1, that is, the through hole 1. The outer peripheral surface 2a is backfilled with mortar, or post-processing is performed to backfill the through hole with rock wool without backfilling with mortar. Since this post-processing is performed in the same manner in the mounting examples described later, the description of the post-processing is omitted in each mounting example described below and the second embodiment. Also, in the explanation of the action in the event of a fire, this is what has been post-processed.

  Next, another mounting example shown in FIG. 10 is, for example, one opening upward from the lower room H1 to the upper room H2 above the adjacent room in the frame K of the fireproof structure which is an example of the fire prevention compartment. A substantially S-shaped through hole 1 is formed by a deformed tube body or curing where 1 aa is located and the other opening 1 bb is located below, and in this through hole 1 is an example of a tube-like body and pipes inside (For example, air-conditioning piping, electric cable for air-conditioning control, etc.) With a synthetic resin protective tube 2 passed through 3, a thermally expandable fireproof fitting is provided on the outer peripheral surface 2 a of the protective tube 2 corresponding to the through hole 1. Tool A is attached.

  In this case, since the heat-expandable heat-resistant sealing material A1 itself has an elastic deformation force, the heat-expandable fireproof mounting tool A is attached along the bent tubular body portion 2a corresponding to the inside of the through hole 1 by the above-described mounting procedure. It is possible to install.

  In this embodiment, an example in which the air-conditioning pipe 3 as piping is inserted into the protective tube 2 and the thermally expandable fire-proof mounting tool A is mounted on the protective tube 2 portion inserted through the through hole 1 has been described. Not limited to this.

  That is, as shown in FIG. 11, it is applied to the case where the air-conditioning pipe 3 that is a pipe is directly inserted into the through-hole 1, and the thermal expansion is performed in a state where the air-conditioning pipe 3 parts inserted into the through-hole 1 are bundled. A fireproof wearing tool A may be attached.

  In addition, as shown in FIG. 12, it is applied to a pipe in which a water supply or hot water supply pipe 3 that is a pipe is inserted into a bellows-shaped protective pipe 2 made of a flexible resin material. You may mount | wear with the thermally expansible fireproof mounting tool A in the part of the protective tube 2 penetrated.

[Second Embodiment]
The second embodiment will be described with respect to differences from the first embodiment, and the same reference numerals are given to the same components as in the first embodiment, and the details thereof will be omitted.

  The one shown in FIG. 13 shows a mounting cross section of an outlet box E equipped with a switch outlet, a lighting outlet, and the like attached to the wall 5 in the room, and is piped inside the wall with respect to the outlet box E attached to the wall. An electric wire 11 is connected to an outlet box E via a duct pipe 10 made of a metal pipe.

  In this embodiment, as shown in FIG. 14, the thermally expansible fireproof fitting A is attached to the outer peripheral surface 11 a of the insertion portion of the electric wire 11 corresponding to the connection port portion 10 </ b> A of the duct pipe 10 connected to the outlet box E. In the event of a fire, if fire heat reaches the connection port portion 10A of the duct pipe 10 from the outlet box E side in the event of a fire, the thermally expandable fireproof mounting tool A foams and the connection port portion 10 A of the inner peripheral surface 10a of 10A and the corresponding outer peripheral surface 11a of the electric wire 11 are inflated and filled to prevent smoke and toxic gas from a fire from flowing out to the external room via the duct pipe 10. In addition, it is possible to prevent the spread of fire due to the burning of the electric wire 11 and to delay the spread of fire.

  In this embodiment, an electric wire 11 as an example of piping forms a tube-like body, and a duct piping 10 made of a metal material that inserts and protects the electric wire 11 forms a protective tube.

  As another mounting example of this embodiment, as shown in FIG. 15, the thermally expandable fireproof mounting tool A is fitted in the inner peripheral surface 10 a of the connection port portion 10 </ b> A of the duct pipe 10 connected to the outlet box E. If fire heat comes from the outlet box side in the event of a fire, smoke and toxic gas from the fire will flow out to the external room via the duct pipe 10 in the same way. It is possible to prevent the spread of fire due to combustion of the electric wire 11 and to delay the spread of fire.

[Third Embodiment]
The third embodiment will be described with respect to differences from the first embodiment, and the same reference numerals are given to the same components as in the first embodiment, and the details thereof will be omitted.

  FIG. 16 shows a thermal expansion property on the outer peripheral surface 2a portion of the tube-like body 2 corresponding to both openings 1cc of the through hole 1 formed in the frame K such as a fire-resistant floor or wall which is an example of a fire prevention compartment. The fire prevention structure CC using the heat-expandable fire prevention attachment A to which the fire prevention attachment A is attached is shown.

  The tubular body of this embodiment is composed of a protective tube 2 made of synthetic resin, through which piping (for example, air conditioning piping, electric cable for air conditioning control, etc.) 3 is passed.

  In the fire prevention structure CC using such a heat-expandable fireproof fitting, in the event of a fire, if the heat from the fire reaches the heat-expandable firefighting attachment A, the thermal expansion on the near side that receives the fire heat The fireproof fitting A is heated and foamed, and is expanded and filled between the outer peripheral surface 2a portion of the tube-like body 2 and the inner peripheral surface 1a of the through-hole 1, and the toxic gas generated by the fire is adjacent to the adjacent chamber. And even if the fire expands further to the far side of the thermal expansible fireproof fitting A, the thermal expansible fireproof fitting A is heated and foamed. The portion is expanded and filled between the outer peripheral surface portion 2a of the tube-like body 2 and the inner peripheral surface 1a of the through-hole 1 to prevent the fire smoke or toxic gas generated by the fire from flowing into the adjacent chamber side. It is possible to prevent or spread fire with protective tube 2 and piping 3 It is possible to achieve a delay of.

  Further, in a state where fire expansion is applied to the thermally expandable fireproof fitting A corresponding to one opening 1 cc of the through hole 1 of the fire prevention compartment, the thermal expandability corresponding to the other opening 1 cc of the through hole 1 is obtained. The air layer 5 exists between the fire-proof wearing tool A and can be fire-proofed as a heat-resistant layer.

  Furthermore, the mounting example of this thermally expandable fireproof mounting tool A is mainly handled when the through-hole 1 of the fireproof compartment is long, or when it is used in a mounting location where the inner diameter is so small that manual operation is not possible. Can be used well.

  In addition, the fire prevention structure using this thermally expansible fireproof mounting tool A is not limited to that of the third embodiment, and both of the through holes 1 formed in a casing such as a floor or a wall through which the tubular body 2 is inserted. You may employ | adopt as what mounts | wears with the thermally expansible fire-proof installation tool A in an internal fitting state to the internal peripheral surface 1a of opening.

  Further, as in the mounting example of FIG. 17 described in the first embodiment, the inner peripheral surface 1a of both openings of the through hole 1 through which the tubular body 2 is inserted into the through hole 1 bent in a substantially S shape, or The thermally expandable fireproof mounting tool A may be mounted on the tube-like body portion 2a corresponding to both opening end sides of the through hole 1 to form the fireproof structure of the third embodiment.

[Another embodiment]
1) In each of the above-described embodiments, the heat-expandable heat-resistant sealing material A1 forming the heat-expandable fireproof mounting device A has been described as having a rectangular strip-shaped cross section, but the present invention is not limited to this. It may be a rod having a circular cross section.

  2) In the above-described embodiment, the example in which the thermally expandable fire-resistant fitting A uses an olefin-based resin material as a main component has been described. However, the present invention is not limited thereto, and a rubber-based material is mixed. Alternatively, the main component may be a rubber-based material.

The perspective view which shows the state before mounting | wearing the tubular body with the thermally expansible fireproof mounting tool in 1st Embodiment. The perspective view which shows the state with which the thermally expansible fireproof mounting tool was mounted | worn to the tubular body Front sectional view showing a state in which the thermally expandable fireproof mounting device is mounted on the tubular body Plan sectional view showing a state in which the tubular body is inserted into the through hole Plan sectional view showing a state in which a thermally expansible fireproof fitting is attached to a tubular body part inserted through a through hole Plan sectional view showing a state where mortar is placed in the through hole (B) Front view showing a thermally expandable fireproof fitting formed on a standard length and winding diameter (b) Front view showing a state in which the standard thermally expandable fireproof fitting is extended (c) A reference Front view showing the heat-expandable fireproof fitting in a contracted state (B) Front view showing a thermally expandable fireproof fitting formed on the reference length and winding diameter (b) Front view showing the expanded diameter of the reference thermally expandable fireproof fitting (c) Reference and The front view which shows the state which reduced the diameter of the thermally expansible fireproof installation tool which becomes Front sectional view showing a state in which a thermally expansible fireproof fitting is attached to the different diameter pipe portion inserted through the through hole Front sectional view showing a state in which a thermally expandable fireproof mounting device is mounted on a tube-like body inserted through a bending through hole The perspective view which shows the state which mounted | wore the heat-expandable fireproof mounting tool to the air-conditioning piping inserted in the through-hole. Front sectional view showing a state in which a thermally expandable fireproof fitting is attached to a bellows-like protective tube inserted through a through-hole and passing through a water supply or hot water supply pipe Side cross-sectional view of a state where a heat-expandable fireproof fitting is attached to the connection part of the duct pipe connected to the outlet box Simplified perspective view of the main part with a thermally expansive fireproof fitting installed on the side of the wire inserted through the duct piping Simplified perspective view of the main part with a thermally expansible fireproof fitting attached to the duct piping side through which the wire is inserted Front sectional view showing a state in which a thermally expandable fireproof fitting is attached to the tubular body portion corresponding to both openings of the through hole Front sectional view showing a state in which a heat-expandable fireproof fitting is attached to a tube-like body portion corresponding to both openings of a substantially S-shaped through hole

Explanation of symbols

A Thermally expandable fireproof mounting tool A1 Thermally expandable heat-resistant sheet material CC Fireproof structure using a thermally expandable fireproof mounting tool P Fireproof compartment P Fireproof target part L1 Stretching direction L2 Shrinking direction N1 Spiral twist N2 What is spiral direction? Reverse torsion S1 Spiral gap S2 Band width 1 Through hole 1a Inner peripheral surface 2 of through hole Protective tube 2a Outer peripheral surface of protective tube 3 Piping 3a Outer peripheral surface of wiring

Claims (8)

  A heat-expandable fireproof mounting device mounted between the through hole of the fireproof compartment and the outer peripheral surface of the tube-like body inserted through the through-hole, and attachable to the outer peripheral surface of the tube-like body, and A heat-expandable fireproof wearing tool composed of a heat-expandable fireproof sealing material formed in a spiral shape that can be elastically deformed on the reduced diameter side against an elastic restoring force.   A heat-expandable fireproof mounting device that is mounted between a through hole of a fire protection compartment and an outer peripheral surface of a tubular body inserted through the through hole, and is attached to an inner peripheral surface of the through hole of the fire protection compartment A heat-expandable fire-proof wearing tool that is made of a heat-expandable heat-resistant sealing material that is formed in a spiral shape that can be elastically deformed to the reduced diameter against an elastic restoring force.   The heat-expandable heat-resistant sealing material can be reduced in diameter along with deformation in the longitudinal direction, and can be expanded along with deformation in the contraction direction in the longitudinal direction, and both ends can be deformed by twisting in a spiral direction. The diameter can be reduced along with the torsional deformation opposite to the spiral direction at both ends, and in each of these deformation states, it can be attached to the fire protection target part against the elastic restoring force. The heat-expandable fireproof wearing device according to claim 1 or 2, comprising elasticity.   The heat-expandable fireproof material according to any one of claims 1 to 3, wherein the heat-expandable heat-resistant sealing material uses an olefin resin as a base resin and an olefin plasticizer as a plasticizer in addition to an expander. Wearing equipment.   The heat-expandable heat-resistant sealing material is formed in a belt-like spiral body, and is configured to be stretchable and deformable in a range in which a spiral gap along the longitudinal direction is smaller than the belt width. The thermally expansible fireproof fitting described in 1.   The through-hole of the said fire prevention division body is a through-hole formed in the housing of a building, The said pipe-like body is comprised from the protective tube which consists of a resin material which penetrates and protects piping. The thermally expandable fireproof wearing device according to claim 1.   The through-hole of the said fire prevention division body is a protective tube which consists of a metal raw material which penetrates and protects piping, and the said pipe-like body is comprised from the wiring penetrated by the protective tube. The thermally expandable fireproof wearing device according to claim 1. A fireproof structure using the thermally expandable fireproof wearing device according to any one of claims 1 to 6,
Thermally expandable fire-proof material in which the heat-expandable heat-resistant sealing material is mounted on the outer peripheral surface portion of the tube-like body corresponding to both openings of the through-holes of the fire-proof compartment or on both ends of the inner peripheral surface of the through-holes Fire-proof structure using mounting equipment.

Images