JP2022008850A - Fire resistant structure, fire resistant tool and closing member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide fire resistant grooves for more surely closing a penetration part of a fire resistant compartment.

SOLUTION: In a fire resistant structure, electric wiring/piping material is inserted into a penetration part formed by penetrating a fire compartment in an architectural structure in an axial direction, and fire resistant tool is disposed between an inner peripheral surface of the penetration part and an outer peripheral surface of the electric wiring/piping material. The fire resistant tool is made of a non-thermal expansive flame-retardant material, is fixed in the penetration part, and comprises a fire resistant tool body surrounding the outer peripheral surface of the electric wiring/piping material with a prescribed interval, and a thermal expansive closing member inserted with the electric wiring/piping material, thereby, compressed and deformed so as to close a gap between the fire resistant tool and the electric wiring/piping material. The closing member comprises a plurality of groove parts that divide an inner peripheral part of the closing member facing the outer peripheral surface of the electric wiring/piping material into a plurality of divided pieces in a circumferential direction, and the plurality of divided pieces are mutually independently compressed and deformed in a circumferential direction so as to contact closely with the outer peripheral surface of the electric wiring/piping material.

SELECTED DRAWING: Figure 2

COPYRIGHT: (C)2022,JPO&INPIT

Description

The present invention relates to a fireproof structure in which a penetrating portion of a fireproof compartment of a building is provided with fireproof measures, and relates to a fireproof tool and a closing member used in the fireproof structure.

Conventionally, when wiring / piping materials such as cables and protective pipes (flexible pipes) are arranged through a fireproof compartment of a building, a penetration portion is formed in the fireproof compartment and wiring is performed in the penetration portion.・ Arrange piping materials. In such a fire protection compartment, it is required to take fire protection measures in the penetrating portion. That is, in order to prevent the flame, smoke, toxic gas, etc. generated on one side from flowing into the space on the other side through the penetration portion when a fire or the like occurs in the space on the front side of one wall of the fire prevention compartment. , The penetration must be completely closed. Then, a fireproof structure as in Patent Document 1 has been proposed that seals between the penetrating portion and the wiring / piping material in the event of a fire.

Patent Document 1 discloses a fireproof structure of a penetrating portion. Hereinafter, in the paragraph, the reference numerals of Patent Document 1 are shown in parentheses. In the fireproof structure of the penetration portion provided in the fireproof partition wall (W) of the building, the conduit (14) is inserted through the through hole (Wa), and the inner peripheral surface of the through hole (Wa) and the conduit (14) are inserted. A heat-expandable refractory tool (11) is provided between the outer peripheral surface and the outer peripheral surface of the above. In the fireproof structure of this penetrating portion, the heat-expandable refractory tool (11) is arranged so as to surround the outer peripheral surface of the conduit (14) with a gap (Ka), and is fixed to the fireproof partition wall (W). ing. The gap (Ka) is filled with an annular filler (21) made of one foamable material (for example, sponge) as a closing member, and the gap (Ka) is closed by the filler (21). There is. The filler (21) is pushed into the gap (Ka) in a state where the inner and outer diameters are reduced, that is, in a compressed state. The inner peripheral surface of the filler (21) is in close contact with the outer peripheral surface of the conduit (14), and the outer peripheral surface is in close contact with the inner peripheral surface of the refractory main body (12). The filler (21) is not filled in the gap (Ka) until it pushes away the tongue piece (16c) and reaches the depth of the through hole (Wa), and the tongue piece (16c) makes the refractory body (12). It is prevented from jumping out of.

Japanese Unexamined Patent Publication No. 2014-7892

In the conventional refractory structure as in Patent Document 1, one foamable material is filled so as to close the gap between the wiring / piping material and the refractory main body. However, in such a conventional fireproof structure, since one foamable material bends and changes as a whole, a gap is likely to be formed between the wiring and the piping material. In particular, the wiring / piping material is not linear due to winding habits, etc., the outer shape of the wiring / piping material itself is uneven, or an object is placed between the wiring / piping material and the foamable material (fireproof in Patent Document 1). When a piece of tongue of the tool body is present, a gap is likely to be formed at least along the circumferential direction of the wiring / piping material. The existence of such a gap reduces the blockage rate of the penetrating portion, and there is a problem that the risk of flame, smoke, toxic gas, etc. passing through the fire protection compartment in the event of a fire increases.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a fireproof structure, a fireproof tool, and a closing member for more reliably closing a penetrating portion of a fireproof compartment.

In the fireproof structure of one embodiment of the present invention, the wiring / piping material is inserted into the penetrating portion formed through the fireproof compartment of the building, and the inner peripheral surface of the penetrating portion and the outer peripheral surface of the wiring / piping material are inserted. It is a fireproof structure with fireproof equipment installed between and
The refractory equipment is
A refractory main body made of a heat-expandable material that expands due to heat, fixed in the penetration portion, and surroundings the outer peripheral surface of the wiring / piping material with a predetermined gap.
It is provided with a closing member in which the wiring / piping material is inserted and compressed and deformed so as to close the gap between the refractory main body and the wiring / piping material.
The closing member includes a plurality of grooves that divide the inner peripheral portion of the closing member facing the outer peripheral surface of the wiring / piping material into a plurality of divided pieces in the circumferential direction, and the plurality of divided pieces each other in the circumferential direction. It is characterized in that it is individually compressed and deformed and is in close contact with the outer peripheral surface of the wiring / piping material.

According to the fireproof structure of the present invention, the inner peripheral portion of the compression-deformable closing member surrounding the outer peripheral surface of the wiring / piping material has a plurality of grooves that divide the inner peripheral portion into a plurality of divided pieces in the circumferential direction. It is provided. The groove portion is formed on the surface of the inner peripheral portion at a predetermined groove depth, and the adjacent divided pieces are divided so as to be individually and freely deformable in the circumferential direction. As a result, the inner peripheral portion of the closing member divided in the circumferential direction by the groove portion can be deformed more randomly and fluidly according to the shape of the object to be abutted against. That is, even if the shape of the outer peripheral surface of the wiring / piping material is not simple due to factors such as winding habits, each divided piece of the inner peripheral portion of the closing member is individually divided into relatively complicated shapes of the wiring / piping material. By compressing and deforming in accordance with the above, it is possible to make good contact with the outer peripheral surface of the wiring / piping material in the circumferential direction. Therefore, in the refractory structure of the present invention, the closing member can more reliably close the gap between the wiring / piping material and the refractory main body.

In a further form of the refractory structure of the present invention, in the above-mentioned one form of the refractory structure, the radial thickness of the closing member that closes the gap between the refractory body and the wiring / piping material is the diameter of the refractory body. It is characterized by being larger than the thickness in the direction. That is, since the thickness of the refractory body made of the heat-expandable member is larger than the radial thickness of the closing member, the gap between the wiring / piping material and the refractory body becomes relatively large, and the wiring / piping. Installation of materials becomes easy.

In the fire-resistant structure of the further aspect of the present invention, in the above-mentioned one form of the fire-resistant structure, a frictional resistance reducing member is interposed between the inner peripheral portion of the closing member and the outer peripheral surface of the wiring / piping material. It is characterized by. That is, the frictional resistance reducing member is interposed between the inner peripheral portion of the closing member and the outer peripheral surface of the wiring / piping material so that the closing member allows the wiring / piping material to move in the axial direction. It is possible to insert the wiring / piping material into the fireproof main body when the wiring / piping material moves in the axial direction.

A further form of the fireproof structure of the present invention is that in the above-mentioned one form of the fireproof structure, the frictional resistance reducing member comprises a plurality of sheets attached to the (diametrically) tip surface of each of the divided pieces. It is a feature. That is, since the friction resistance reducing member is composed of a plurality of sheets attached to the tip surface of each divided piece, the frictional resistance between the tip surface of each divided piece and the wiring / piping material can be effectively reduced. can.

In a further form of the fireproof structure of the present invention, in the above-mentioned one form of the fireproof structure, each groove portion is formed at a radial depth that does not reach the outer peripheral portion of the closing member, and the plurality of divided pieces are formed of the closing member. It is characterized in that it is connected at the outer peripheral portion. That is, since each groove portion does not completely cut the wall portion of the closing member and a plurality of divided pieces are connected at the outer peripheral portion of the closing member, the adhesion to the outer peripheral surface of the wiring / piping material is ensured. At the same time, it becomes easy to carry and install the closing member.

In a further form of the fireproof structure of the present invention, in the above-mentioned one form of the fireproof structure, each groove reaches from the inner peripheral portion to the outer peripheral portion of the closed member so as to cut the closed member in the radial direction. It is characterized in that a plurality of divided pieces are separated at the outer peripheral portion of the closed member, and the adjacent divided pieces are deformed and brought into close contact with each other in the gap. That is, since the plurality of divided pieces are separated in the circumferential direction in a block shape by the groove portion that cuts the wall portion of the closing member in the radial direction, the independence in the compression deformation of each divided piece is further improved and the wiring is performed. -It is possible to improve the blockage between the piping material and the main body of the fireproof equipment. In the present specification, the "groove portion" is defined as an element for dividing the inner peripheral portion of the closing member, and is a concept including a space for completely separating the peripheral wall portion of the closing member.

In a further form of the fireproof structure of the present invention, in the above-mentioned one form of the fireproof structure, the closing member connects at least a part of adjacent divided pieces among the plurality of divided pieces on the outer peripheral side of the closed member. It is characterized by further comprising a connecting body. That is, by connecting each of the divided pieces separated by the connecting body at the outer peripheral portion of the closing member, the closing member can be easily carried and installed while maintaining high independence in the compression deformation of each divided piece.

A further form of the fireproof structure of the present invention is characterized in that, in the above-mentioned one form of the fireproof structure, adjacent divided pieces among the plurality of divided pieces have different compression ratios. That is, by deforming the adjacent divided pieces at different compression rates, the inner peripheral portion of the closing member can be deformed more randomly as a whole, and high adhesion to the outer peripheral shapes of various wiring / piping materials can be achieved. Can be demonstrated.

In one form of the refractory of the present invention, wiring / piping material is inserted through a penetrating portion formed through a fireproof compartment of a building, and an inner peripheral surface of the penetrating portion and an outer peripheral surface of the wiring / piping material are inserted. It is a fireproof tool installed between and
A refractory main body made of a heat-expandable material that expands due to heat, fixed in the penetration portion, and surroundings the outer peripheral surface of the wiring / piping material with a predetermined gap.
A compression-deformable closing member for inserting the wiring / piping material and closing the gap between the refractory main body and the wiring / piping material is provided.
The closing member includes a plurality of grooves that divide the inner peripheral portion of the closing member facing the outer peripheral surface of the wiring / piping material into a plurality of divided pieces in the circumferential direction, and the plurality of divided pieces each other in the circumferential direction. It is characterized in that it can be individually compressed and deformed so as to be in close contact with the outer peripheral surface of the wiring / piping material.

According to the refractory tool of the present invention, the inner peripheral portion of the compression-deformable closing member surrounding the outer peripheral surface of the wiring / piping material has a plurality of grooves that divide the inner peripheral portion into a plurality of divided pieces in the circumferential direction. It is provided. The groove portion is formed on the surface of the inner peripheral portion at a predetermined groove depth, and the adjacent divided pieces are divided so as to be individually and freely deformable in the circumferential direction. As a result, the inner peripheral portion of the closing member divided in the circumferential direction by the groove portion can be deformed more randomly and fluidly according to the shape of the object to be abutted against. That is, even if the shape of the outer peripheral surface of the wiring / piping material is not simple due to factors such as winding habits, each divided piece of the inner peripheral portion of the closing member is individually divided into relatively complicated shapes of the wiring / piping material. By compressing and deforming in accordance with the above, it is possible to make good contact with the outer peripheral surface of the wiring / piping material in the circumferential direction. Therefore, in the refractory tool of the present invention, the closing member can more reliably close the gap between the wiring / piping material and the refractory main body.

A further form of the refractory of the present invention is characterized in that, in the above-mentioned one form of the refractory, the radial lengths of the plurality of divided pieces are non-uniform. That is, since the radial length of each divided piece is non-uniform, the inner peripheral portion of the closing member can be deformed more randomly as a whole, which is high for the outer peripheral shapes of various wiring / piping materials. It is possible to exert adhesion.

A further form of the refractory device of the present invention is characterized in that, in the above-mentioned refractory device of one form, the intervals in the circumferential direction of the plurality of grooves are uneven. That is, since the intervals in the circumferential direction of each groove are not uniform, the inner peripheral portion of the closing member can be deformed more randomly as a whole, and high adhesion to the outer peripheral shapes of various wiring / piping materials can be achieved. It becomes possible to demonstrate the sex.

A further form of the refractory device of the present invention is characterized in that, in the above-mentioned refractory device of one form, the circumferential widths of the plurality of grooves are non-uniform. That is, since the circumferential width of each groove is non-uniform, the inner peripheral portion of the closing member can be deformed more randomly as a whole, and high adhesion to the outer peripheral shapes of various wiring / piping materials can be achieved. Can be demonstrated.

Further, in the refractory of the present invention, each of the grooves is formed at a radial depth that does not reach the outer peripheral portion of the closing member, and the plurality of divided pieces are formed of the closing member. It is characterized in that it is connected at the outer peripheral portion. That is, since each groove portion does not completely cut the wall portion of the closing member and a plurality of divided pieces are connected at the outer peripheral portion of the closing member, the adhesion to the outer peripheral surface of the wiring / piping material is ensured. At the same time, it becomes easy to carry and install the closing member.

A further embodiment of the present invention is the refractory of the above aspect, wherein each groove extends from the inner peripheral portion to the outer peripheral portion of the closing member so as to cut the closing member in the radial direction. It is characterized in that a plurality of divided pieces are separated from each other. That is, a plurality of divided pieces are separated in the circumferential direction in a block shape by a groove portion that cuts the wall portion of the closing member in the radial direction, so that the independence in the compression deformation of each divided piece is further improved and the wiring is performed. -It is possible to improve the blockage between the piping material and the main body of the fireproof equipment.

A further form of the refractory of the present invention is the above-mentioned one form of the refractory, in which the closing member connects at least a part of adjacent divided pieces among the plurality of divided pieces on the outer peripheral side of the closing member. It is characterized by further comprising a conjugate. That is, by connecting each of the divided pieces separated by the connecting body at the outer peripheral portion of the closing member, the closing member can be easily carried and installed while maintaining the independence of each divided piece in the compression deformation.

A further form of the refractory of the present invention is characterized in that, in the above-mentioned one form of the refractory, the closing member has a thermal expansion property that expands by heat. That is, since the closing member is thermally expandable, it is possible to more reliably close the penetrating portion by thermally expanding together with the refractory main body in the event of a fire.

A further form of the refractory of the present invention is the above-mentioned one form of the refractory, wherein the refractory body has a cushioning property. That is, since the refractory body has cushioning properties, it is possible to bring the outer peripheral surface of the refractory body and the inner peripheral surface of the penetrating portion closer to each other.

A further form of the refractory of the present invention is the refractory of the above aspect, wherein the refractory body has a hooking portion that is hooked on the peripheral edge of the penetrating portion of the fireproof compartment. That is, by arranging the hooked portion of the refractory main body in contact with the peripheral edge of the penetrating portion of the fireproof compartment, the installation of the refractory tool in the penetrating portion becomes easy.

Further, the refractory device of the present invention has a cylinder portion into which the refractory main body is inserted and a flange portion protruding from the outer periphery of the cylinder portion in the refractory device of the above embodiment, and has an inner circumference of the penetration portion. It is further provided with an outer frame arranged between the surface and the outer peripheral surface of the refractory main body. That is, the outer frame can be easily arranged with respect to the penetrating portion by bringing the flange portion of the outer frame into contact with the peripheral edge of the penetrating portion, and the outer frame can be easily arranged regardless of the shape of the inner peripheral surface of the penetrating portion. It is possible to stably hold the refractory body in the cylinder portion of the flange.

In the further form of the refractory of the present invention, in the above-mentioned one form of the refractory, at least one of the refractory body and the closing member forms an opening for arranging the wiring / piping material inside from the radial direction. As described above, it is characterized by having a slit portion that divides the wall portion along the axial direction. Wiring / piping materials can be arranged inside the refractory main body or the closing member from the radial direction via the slit portion. As a result, the refractory equipment can be attached to the wiring / piping material previously arranged in the wall hole after the fact.

The closing member of one embodiment of the present invention is a fireproof structure provided in a penetrating portion formed through a fireproof compartment of a building, in which the wiring / piping material is inserted to create a gap in the penetrating portion. It is a closing member that closes
An annular compression-deformable sponge body having an inner peripheral portion and an outer peripheral portion,
A plurality of groove portions for dividing the inner peripheral portion of the closing member facing the outer peripheral surface of the wiring / piping material into a plurality of divided pieces in the circumferential direction are provided.
The plurality of divided pieces are individually compressed and deformed in the circumferential direction so that they can be brought into close contact with the outer peripheral surface of the wiring / piping material.

According to the closing member of the present invention, the inner peripheral portion of the closing member that is compressively deformable and surrounds the outer peripheral surface of the wiring / piping material has a plurality of grooves that divide the inner peripheral portion into a plurality of divided pieces in the circumferential direction. It is provided. The groove portion is formed on the surface of the inner peripheral portion at a predetermined groove depth, and the adjacent divided pieces are divided so as to be individually and freely deformable in the circumferential direction. As a result, the inner peripheral portion of the closing member divided in the circumferential direction by the groove portion can be deformed more randomly and fluidly according to the shape of the object to be abutted against. That is, even if the shape of the outer peripheral surface of the wiring / piping material is not simple due to factors such as winding habits, each divided piece of the inner peripheral portion of the closing member is individually divided into relatively complicated shapes of the wiring / piping material. By compressing and deforming in accordance with the above, it is possible to make good contact with the outer peripheral surface of the wiring / piping material in the circumferential direction. Therefore, the closing member of the present invention can more reliably close the gap generated around the wiring / piping material in the penetrating portion due to the shape of the wiring / piping material.

In the present invention, the closing member more reliably closes the gap between the wiring / piping material and the main body of the refractory with respect to the penetrating portion formed in the fireproof compartment, and more effectively fireproof measures can be taken. It is possible.

The schematic perspective view of the fire-resistant structure of one Embodiment of this invention. An exploded perspective view of the refractory tool according to the embodiment of the present invention. (A) A perspective view seen from the front and (b) a perspective view seen from the back of the refractory main body of the refractory of FIG. 2. (A) front view, (b) rear view and (c) AA sectional view of the refractory main body of FIG. (A) perspective view and (b) front view of the refractory closing member of FIG. (A) BB sectional view and (b) CC sectional view of the refractory of FIG. Schematic cross-sectional view of the fireproof structure of FIG. (A) DD sectional view and (b) EE sectional view of the fireproof structure of FIG. 7. The schematic diagram which shows one process which constructs the fire-resistant structure of FIG. (A) perspective view and (b) front view of the closing member of another embodiment of the present invention. (A) perspective view and (b) front view of the closing member of another embodiment of the present invention. (A) perspective view, (b) front view and (c) partial development view of the closing member of another embodiment of the present invention. (A) perspective view and (b) front view of the closing member of another embodiment of the present invention. (A) perspective view and (b) front view of the closing member of another embodiment of the present invention. (A) perspective view, (b) front view and (c) rear view of the closing member of another embodiment of the present invention. (A) perspective view and (b) front view of the closing member of another embodiment of the present invention. (A) perspective view and (b) front view of the closing member of another embodiment of the present invention. Schematic cross-sectional view of the fireproof structure of another embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. It should be noted that the shape of each figure referred to in the following description is a conceptual diagram or a schematic diagram for explaining suitable shape dimensions, and the dimensional ratio and the like do not always match the actual dimensional ratio. That is, the present invention is not limited to the dimensional ratio in the drawings. Further, it goes without saying that the vertical and horizontal directions in the present invention are merely concepts indicating relative positions, and these can be interchanged and applied.

In the fireproof structure 10 of the present embodiment, when a fire or the like occurs in the space on the front side of one wall of the fireproof compartment 12, the flame, smoke, toxic gas or the like generated on the other side flows into the space on the other side. It is a wall structure that separates both spaces so as to prevent it. FIG. 1 is a schematic perspective view of the fireproof structure 10.

As shown in FIG. 1, in the fireproof structure 10, the wiring / piping material 14 is inserted through the penetrating portion 13 formed by penetrating the fireproof compartment 12 of the building in the axial direction (thickness direction), and the penetrating portion 13 is formed. A fireproof tool 11 is provided between the inner peripheral surface and the outer peripheral surface of the wiring / piping material 14.

The refractory compartment 12 of the present embodiment is a vertically erected hollow or solid refractory wall having a predetermined thickness. The fire protection compartment 12 may be composed of gypsum board, a concrete wall, or the like. The fire protection compartment 12 is provided with a penetrating portion 13 having a diameter through which the wiring / piping material 14 having a predetermined thickness can penetrate. The penetrating portion 13 has a perfect circular shape, and its inner diameter is formed to be substantially the same (slightly larger) as the outer diameter of the tubular portion 111 of the refractory tool 11. It should be noted that the fire protection compartment of the present invention is a concept including a structure such as a ceiling and a floor for the fire protection compartment, and is not limited to the embodiment of the present embodiment. Further, examples of the wiring / piping material 14 of the present embodiment include wiring materials such as power transmission cables, control cables, coaxial cables, and optical cables, and piping materials such as synthetic resin flexible protective tubes and bellows tubes. , The wiring / piping material of the present invention is a broad concept meaning various long materials, and is not limited thereto.

As shown in FIG. 2, the refractory tool 11 of the present embodiment is made of a heat-expandable material that expands due to heat, and the penetrating portion 13 surrounds the outer peripheral surface of the wiring / piping material 14 with a predetermined gap 15. It includes a refractory main body 110 fixed inside, and a closing member 120 that is compressed and deformed so as to close the gap 15 between the refractory main body 110 and the wiring / piping material 14 by inserting the wiring / piping material 14. In the present embodiment, the closing member 120 is integrally adhered to the refractory main body 110 with an adhesive, but the present invention is not limited to this. Hereinafter, each member constituting the refractory tool 11 of the present embodiment will be described in detail.

The refractory main body 110 of the present embodiment is integrally molded with a heat-expandable material that can expand by heat and maintain its original shape by itself. More specifically, the heat-expandable material is a heat-expandable rubber, and this heat-expandable rubber is an expansion material whose volume expands more than twice as much as before heating when exposed to high heat (for example, 300 ° C. or higher) (for example, 300 ° C. or higher). The rubber is mixed with (expanded graphite) and molded into a predetermined shape (after undergoing a molding step) and subjected to a vulcanization step. The vulcanization step is a step of applying heat to the rubber that has undergone the molding step to cause a vulcanization (crosslinking) reaction or an adhesion reaction to obtain a product having rubber elasticity. The refractory main body 110 is elastically deformable and maintains a cylindrical shape (shape) by the heat-expandable rubber itself.

As shown in FIGS. 3 and 4, the refractory main body 110 is formed from a hollow cylindrical tubular portion 111 arranged in the penetrating portion 13 of the fireproof compartment 12 and one end side of the tubular portion 111. It includes a plate-shaped flange portion 112 that integrally projects outward, and a closing portion 113 that closes the opening on the other end side of the cylindrical portion 111.

The tubular portion 111 is an annular body that opens to one end side and extends linearly from one end to the other end with a uniform diameter along the axial direction thereof. The inner peripheral surface of the hollow tubular portion 111 has a circular shape in cross-sectional view, and an insertion space into which the wiring / piping material 14 can be inserted is defined inside the inner peripheral surface. There is. On the other hand, the outer shape (contour) of the tubular portion 111 is determined by the outer peripheral surface having a circular shape in cross-sectional view. That is, a thick portion (thermally expandable material) between the inner peripheral surface and the outer peripheral surface of the tubular portion 111 is arranged between the inner peripheral surface of the penetrating portion 13 and the outer peripheral surface of the wiring / piping material 14.

The outer diameter of the tubular portion 111 is formed to be substantially the same as the diameter of the penetrating portion 13, and the shape of the outer peripheral surface (circular) and the shape of the penetrating portion 13 (circular) are substantially the same. Further, the inner diameter of the tubular portion 111 is larger than the diameter of the wiring / piping material 14, and when the wiring / piping material 14 is inserted into the insertion space, the inner peripheral surface of the tubular portion 111 and the outer peripheral surface of the wiring / piping material 14 A gap of a predetermined size is formed between the and. The inner diameter of the tubular portion 111 is larger than the thickness of the cylindrical wall (difference between the outer radius and the inner radius of the tubular portion 111). The thickness of the cylindrical wall of the refractory main body 110 is heated by heat generated by a fire or the like, and expands in the inner diameter direction of the tubular portion 111 to block the insertion space (that is, fill the inner space of the inner peripheral surface). It is preferable that the thickness is such that it is possible.

The flange portion 112 is formed to be thin in the entire circumferential direction of the tubular portion 111 so as to extend in the radial direction from the outer peripheral edge of one end of the tubular portion 111. The outer edge that defines the contour of the flange portion 112 is circular, and its diameter is larger than the diameter of the penetration portion 13. That is, the flange portion 112 can come into contact with the wall surface of the peripheral edge of the penetrating portion 13 on the back surface thereof, and functions as a hooking portion that hooks on the peripheral edge of the penetrating portion 13 of the fire protection compartment 12.

The closed portion 113 is formed in a thin wall shape like the flange portion 112, and closes the other end of the tubular portion 111. The closed portion 113 is divided into a plurality of parts by a plurality of notches passing through the center thereof. That is, a plurality of tongue pieces 113a extending radially inward (center side) from the inner peripheral surface at the other end of the tubular portion 111 are formed in the closed portion 113. Each tongue piece 113a is elastically deformable along the axial direction with its base end as a fulcrum. By elastically deforming the tongue piece 113a, the closed portion 113 is deformed so as to be able to pass through the wiring / piping material 14 so as to open the other end surface of the tubular portion 111. Then, in the closed portion 113, the tongue piece 113a elastically returns after the wiring / piping material 14 is inserted, so that each tongue piece 113a comes into close contact with the outer surface of the wiring / piping material 14 and closes the end surface again. (See FIG. 7).

Further, the tubular portion 111 is formed with a slit portion 114 extending in the entire axial direction and extending in a direction (diametrical direction) orthogonal to the axial direction. The slit portion 114 cuts the cylindrical wall and the flange portion 112 of the tubular portion 111 along the entire axial direction, and divides the wall portions of the inner peripheral surface and the outer peripheral surface in the axial direction. The slit portion 114 opens due to the elastic deformation of the tubular portion 111 to the outside. That is, the wiring / piping material 14 can be inserted into the insertion space from the radial direction via the slit portion 114. The slit portion 114 is one of a plurality of cuts for forming the tongue piece 113a, and is used for forming the tongue piece 113a.

The closing member 120 is configured to be compressible and deformable so as to be filled in the gap between the wiring / piping material 14 and the refractory main body 110. The closing member 120 is made of a flame-retardant effervescent material (for example, sponge) such as a urethane foam that can maintain its original shape and can be compressionally deformed by itself. The closing member 120 is a non-thermally expandable or thermally expandable foam. The heat-expandable foam is formed by dispersing unfired vermiculite, expanded graphite, or the like as a heat-expanding material that expands by heat in the foam.

As shown in FIGS. 5 and 6, the closing member 120 includes a hollow cylindrical (or annular) sponge body 121 that extends axially and opens at both ends in the axial direction. The sponge body 121 has a thick peripheral wall portion (or wall portion) extending in the axial direction. An inner peripheral portion 122 facing the outer peripheral surface of the wiring / piping material 14 is defined on the inner peripheral surface of the closing member 120 (sponge body 121). In the internal space inside the inner peripheral portion 122, an insertion portion for inserting the wiring / piping material 14 is defined. The diameter of the inner peripheral portion 122 of the closing member 120 is smaller than the outer diameter of the wiring / piping material 14. The diameter of the inner peripheral portion 122 of the closing member 120 can be determined according to the diameter of the planned wiring / piping material 14, but in the original shape, the insertion portion (the tip of each divided piece 126 is It may be defined as a hole with a very small diameter (so that it contacts in the center). That is, even if the inner diameter of the closing member 120 is significantly smaller than the diameter of the wiring / piping material 14, when the wiring / piping material 14 is forcibly inserted into the insertion portion, the inner peripheral portion 122 is compressed and deformed outward. It can be expanded while doing. As the diameter of the inner peripheral portion 122 becomes smaller, the amount of compression of the sponge body 121 increases, and the adhesion to the wiring / piping material 14 becomes stronger. Further, on the outer peripheral surface of the closing member 120, an outer peripheral portion 123 facing the inner peripheral surface of the refractory main body 110 is defined. The diameter of the outer peripheral portion 123 of the closing member 120 is substantially the same as or larger than the diameter of the inner peripheral surface of the refractory body 110 (so as to be compressed and deformed and inserted). Further, the radial thickness of the closing member 120 (distance along the radial direction between the inner peripheral portion 122 and the outer peripheral portion 123) is larger than the radial thickness of the tubular portion 111 of the fireproof main body 110. That is, when the wiring / piping material 14 is placed in the insertion portion of the closing member 120 with the closing member 120 inserted in the refractory main body 110, the sponge body 121 is compressed and deformed to form the wiring / piping material 14. The dimensions and shape of the closing member 120 are determined so as to close (preferably completely) the gap with the refractory main body 110. In other words, the volume of the closing member 120 is at least larger than the volume of the assumed gap between the refractory main body 110 and the wiring / piping material 14. The volume of the closing member 120 is preferably formed to be 15% or more larger than the gap.

The closing member 120 is recessed on the surface of the inner peripheral portion 122, and includes a plurality of (eight in the present embodiment) groove portions 125 that divide the inner peripheral portion 122 into a plurality of divided pieces 126 in the circumferential direction. Specifically, as shown in FIGS. 5 and 6, each groove portion 125 is radially outwardly carved at a predetermined depth from the surface of the inner peripheral portion 122 of the sponge body 121 in a front view (or cross-sectional shape). It is a groove that is sunk and extends continuously with the same cross-sectional shape over the entire axial direction. Further, each groove portion 125 is formed at a radial depth that does not reach the outer peripheral portion 123 of the closing member 120. That is, the plurality of divided pieces 126 are connected at the outer peripheral portion 123 of the closing member 120. In other words, the meat portion left between the tip of the groove portion 125 and the outer peripheral portion 123 connects the adjacent divided pieces 126 to each other. In the present embodiment, each groove portion 125 has a front view V-shape having a predetermined width in the circumferential direction in the inner peripheral portion 122. As a result, in the original shape of the closing member 120 before compression deformation, the adjacent divided pieces 126 are separated from each other by separating the groove portion 125 without contacting each other. The groove portion 125 separating the adjacent divided pieces 126 guides the divided pieces 126 to expand in the width direction when the divided pieces 126 are compressed and deformed in the radial direction (length direction). As will be described later, when each of the divided pieces 126 is elastically compressed and deformed, a part of the divided pieces 126 is deformed so as to occupy the groove portion 125, so that the adjacent divided pieces 126 come into contact with each other without a gap (FIG. 8). reference). Further, in the present embodiment, the plurality of groove portions 125 have the same shape and are arranged at equal intervals in the circumferential direction. Then, the circumferential width of each divided piece 126 (the arc length on the same circumference centered on the cylinder axis of the divided piece 126) and the radial length (from the outer peripheral surface side end portion to the tip surface of the divided piece 126). The radial distance) is uniform.

Further, the sponge body 121 is formed with a slit portion 127 extending in the entire axial direction and extending in a direction (diametrical direction) orthogonal to the axial direction. Then, the slit portion 127 cuts the meat portion connecting the adjacent divided pieces 126 along the entire axial direction so as to communicate with one of the groove portions 125, and the wall portion between the inner peripheral portion 122 and the outer peripheral portion 123. Is divided in the axial direction. However, the slit portion 127 may be formed at an arbitrary position in the circumferential direction, not between the divided pieces 126. Then, the sponge body 121 is elastically deformed to the outside, so that the slit portion 127 opens. That is, the wiring / piping material 14 can be inserted into the insertion portion inside the inner peripheral portion 122 from the radial direction thereof via the opened slit portion 127. It is preferable that the closing member 120 is mounted on the refractory main body 110 after the slit portion 114 of the refractory main body 110 and the slit portion 127 of the closing member 120 are aligned so as to communicate with each other.

A frictional resistance reducing member (a plurality of sheet bodies 124) for reducing friction with the wiring / piping material 14 is optionally provided on the inner peripheral portion 122 of the closing member 120. Specifically, the frictional resistance reducing member is composed of a plurality of sheet bodies 124 attached to the inner peripheral portion of each divided piece 126. The sheet body 124 is made of a material (for example, a non-woven fabric) having a friction coefficient lower than that of the surface of the sponge body 121. By interposing the sheet body 124 between the outer peripheral surface of the wiring / piping material 14 and the inner peripheral portion 122 of the closing member 120, the frictional resistance between the wiring / piping material 14 and the closing member 120 is reduced, and the wiring is performed. -Allows smooth movement of the piping material 14 in the axial direction. Then, when the wiring / piping material 14 moves in the axial direction with the wiring / piping material 14 inserted in the closing member 120, the closing member 120 can be maintained in the refractory main body 110. As a material property, the coefficient of friction on the surface of the sponge body 121 of the closing member 120 is lower than the coefficient of friction on the surface of the fireproof body 110 made of heat-expandable rubber. That is, even if the friction resistance reducing member is not attached or the closing member 120 and the fireproof main body 110 are not adhered to each other, the frictional force generated between the closing member 120 and the fireproof main body 110 is wired to the closing member 120. Since it exceeds the frictional force generated between the piping material 14 and the piping material 14, the closing member 120 allows the wiring / piping material 14 to move relative to the fireproof main body 110 in the axial direction, and the wiring / piping material 14 is the shaft. The closing member 120 is configured to remain positioned within the penetration portion 13 when moved in the direction. Therefore, the frictional resistance reducing member may be omitted.

Based on the above description, the fireproof structure 10 according to the embodiment of the present invention will be described in more detail with reference to FIGS. 7 and 8. FIG. 7 is a vertical cross-sectional view cut along the axial direction of the fireproof structure 10 of FIG. 8 (a) and 8 (b) are cross-sectional views taken along the line DD and EE of FIG.

As shown in FIG. 7, in the refractory structure 10, the hollow cylindrical tubular portion 111 of the refractory main body 110 is inserted into the penetrating portion 13 of the fireproof compartment 12. As described above, since the outer diameter of the tubular portion 111 and the inner diameter of the penetrating portion 13 are substantially equal to each other, the outer peripheral surface of the tubular portion 111 and the inner peripheral surface of the penetrating portion 13 are substantially in close contact with each other. Further, one end of the refractory main body 110 is arranged on the front side of the wall, the other end faces the back side of the wall, and the back surface of the flange portion 112 is in contact with the wall surface of the peripheral edge of the penetrating portion 13. The refractory main body 110 is fixed to the fireproof compartment 12 via double-sided tape or the like. Then, the closing member 120 is arranged in the insertion space in the tubular portion 111 of the refractory main body 110. In the present embodiment, the outer peripheral portion 123 of the closing member 120 is integrally adhered to the inner peripheral surface of the refractory main body 110. However, these may not be integrally adhered to each other, and the closing member may be held by the refractory main body only by frictional force.

Further, the wiring / piping material 14 is arranged to penetrate substantially the center of the penetrating portion 13 so as to penetrate the fireproof partition body 12. The wiring / piping material 14 penetrates the insertion space of the refractory main body 110 and the insertion portion of the closing member 120 in the axial direction. Then, each tongue piece 113a of the closed portion 113 of the refractory main body 110 bends to one end (wall surface) side in the insertion space, and each tongue piece 113a adheres to the outer peripheral surface of the wiring / piping material 14 due to the elastic recovery force. ing.

The closing member 120 is elastically compressed and deformed from its original shape to close the gap between the wiring / piping material 14 and the refractory main body 110 without any gap. As shown in FIG. 7, at one end (wall surface) side portion and the central portion of the closing member 120, the inner peripheral portion 122 is in close contact only with the outer peripheral surface of the wiring / piping material 14 (via the sheet body 124). .. On the other hand, at the other end (behind the wall) side portion of the closing member 120, the inner peripheral portion 122 is in close contact with both the outer peripheral surface of the wiring / piping material 14 and the surface of the tongue piece 113a.

In the cross section at the portion near one end (wall surface) of the closing member 120, as shown in FIG. 8A, the inner peripheral portion 122 of the closing member 120 divided by the plurality of radial grooves 125 is wired. -It is deformed into a circular shape as a whole following the shape of the outer peripheral surface of the piping material 14. Then, the radial tip portions or tip surfaces of the plurality of divided pieces 126 are individually and irregularly (randomly) compressed and deformed with each other in the circumferential direction, and are in close contact with the outer peripheral surface of the wiring / piping material 14. At this time, each of the divided pieces 126 is compressed and deformed so as to be crushed outward in the radial direction as a whole, so that a part of the divided pieces 126 (sponge body 121) forms the groove portion 125 (which separates the adjacent divided pieces 126 in the original shape). I'm filling it up. That is, the space of the groove portion 125 further promotes the compressive deformation of the divided piece 126 into an irregular shape. In other words, by separating the adjacent divided pieces 126 by the groove portion 125, each divided piece 126 can be deformed more freely (or with less influence on each other). Then, each of the divided pieces 126 whose tip surface (inner peripheral surface) is in close contact with the wiring / piping material 14 and is compressed and deformed in the radial direction (or height direction) expands irregularly in the circumferential direction (or width direction). Therefore, the adjacent divided pieces 126 are in contact with each other without a gap in the circumferential direction. As a result, the closing member 120 closes the gap between the wiring / piping material 14 and the refractory main body 110 without a gap.

In the cross section at the portion near the other end (behind the wall) of the closing member 120, a plurality of tongue pieces 113a cover a part of the outer peripheral surface of the wiring / piping material 14, and the outer peripheral surface of the wiring / piping material 14 and the tongue. Pieces 113a are alternately exposed toward the gap. Then, as shown in FIG. 8B, the inner peripheral portion 122 of the closing member 120 divided by the plurality of groove portions 125 extending in the radial direction is relatively complicated by combining the wiring / piping material 14 and the tongue piece 113a. It is deformed in a complicated manner as a whole following the outer surface shape. That is, the inner peripheral portion 122 of the closing member 120 is deformed more randomly and fluidly as compared with FIG. 8A. Then, the radial tip portions or tip surfaces of the plurality of divided pieces 126 are individually and irregularly (randomly) compressed and deformed with each other in the circumferential direction and come into close contact with the surfaces of the wiring / piping material 14 and the tongue piece 113a. ing. In particular, since each of the divided pieces 126 is independent of each other via the groove portion 125 in the circumferential direction, the tip surface (inner peripheral surface) of the adjacent divided pieces 126 is deformed in a different shape depending on the position in the circumferential direction. There is. Further, by compressing and deforming each of the divided pieces 126 so as to be crushed outward in the radial direction as a whole, a part of the divided pieces 126 (sponge body 121) fills the groove portion 125 (which separates the adjacent divided pieces 126 in the original shape). ing. That is, the space of the groove portion 125 further promotes the compressive deformation of the divided piece 126 into an irregular shape. Then, each of the divided pieces 126 whose tip surface is in close contact with the wiring / piping material 14 and the tongue piece 113a and is compressed and deformed in the radial direction (or height direction) expands irregularly in the circumferential direction (or width direction). , The adjacent divided pieces 126 are in contact with each other without a gap in the circumferential direction. As a result, the closing member 120 closes the gap between the wiring / piping material 14 and the refractory main body 110 without a gap.

Although not shown, even if the wiring / piping material 14 is bent and arranged due to winding habits, the closing members 120 are similarly deformed because the divided pieces 126 are independently and freely deformed in the circumferential direction. , The gap between the wiring / piping material 14 and the refractory main body 110 can be closed without a gap. That is, in the fireproof structure 10 of the present embodiment, the penetrating portion 13 is more reliably closed according to the outer surface shape of the wiring / piping material 14 by the inner peripheral portion 122 divided in the circumferential direction of the closing member 120.

Next, with reference to FIG. 9, a method for constructing the fireproof structure 10 according to the embodiment of the present invention will be exemplified. First, the wiring / piping material 14 is penetrated and arranged in the penetrating portion 13 of the fireproof partition body 12. Next, the refractory tool 11 having the closing member 120 mounted in the refractory tool main body 110 is prepared. Here, the outer peripheral portion 123 of the closing member 120 is adhered to the inner peripheral surface of the refractory main body 110 with double-sided tape, an adhesive, putty, or the like. The refractory body 110 and the closing member 120 are integrally elastically deformed to open the slit portions 114 and 127, and the wiring / piping material 14 is inserted into the insertion portion of the closing member 120 via the opened slit portions 114 and 127. do. Then, by elastically returning the refractory main body 110 and the closing member 120, the slit portions 114 and 127 can be closed and the wiring / piping material 14 can be held in the insertion portion. Subsequently, the refractory tool 11 is slid along the wiring / piping material 14 to be arranged at the penetrating portion 13 of the tubular portion 111 of the refractory main body 110, and the flange portion 112 is brought into contact with the wall surface. The refractory tool 11 is fixed to the fireproof compartment 12 with double-sided tape or the like. Then, since the closing member 120 allows the wiring / piping material 14 to move relative to the refractory main body 110 in the axial direction while the refractory tool 11 is fixed, the closing member 120 is maintained in the penetrating portion 13. At the same time, it is possible to move the wiring / piping material 14 in the axial direction and lay it. By the above steps, the fireproof structure 10 shown in FIG. 1 is constructed.

It should be noted that the method described here is only an example, and those skilled in the art can change the order of each step or omit unnecessary steps depending on the situation. For example, the refractory main body 110 may be installed in the penetrating portion 13 first, and the closing member 120 and the wiring / piping material 14 may be inserted into the insertion space from the long direction through the opening at one end or the other end thereof. It is possible.

Hereinafter, the operation and effect of the refractory structure 10 (refractory tool 11) according to the embodiment of the present invention will be described.

According to the fireproof structure 10 and the fireproof tool 11 of the present embodiment, the inner peripheral portion 122 of the compressionally deformable closing member 120 surrounding the outer peripheral surface of the wiring / piping material 14 has a plurality of inner peripheral portions 122 in the circumferential direction. A plurality of groove portions 125 for dividing into the divided pieces 126 are provided. The groove portion 125 is formed on the surface of the inner peripheral portion 122 at a predetermined groove depth, and the adjacent divided pieces 126 are divided so as to be individually and freely deformable in the circumferential direction. As a result, the inner peripheral portion 122 of the closing member 120 divided in the circumferential direction by the groove portion 125 can be deformed more randomly and fluidly according to the shape of the object to be abutted against. In particular, in the original shape of the closing member 120, since the groove portion 125 separates the adjacent divided pieces 126 so as not to come into contact with each other, each divided piece 126 is more freely deformed according to the outer peripheral shape of the wiring / piping material 14. can do. That is, even if the shape of the outer peripheral surface of the wiring / piping material 14 is not simple due to factors such as winding habits, the inner peripheral portion 122 of the closing member 120 has a relatively divided piece 126 of the wiring / piping material 14. By individually following a complicated shape and compressing and deforming, it is possible to satisfactorily adhere to the outer peripheral surface of the wiring / piping material 14 in the circumferential direction. Therefore, in the refractory structure 10 of the present invention, the closing member 120 can more reliably close the gap between the wiring / piping material 14 and the refractory main body 110.

As described above, an embodiment according to the basic configuration of the present invention has been described. However, the present invention is not limited to the above embodiment, and various embodiments and modifications can be taken within the technical scope of the present invention. In each embodiment and modification, the components having the last two digits in common among the components shown by the three digits have the same or similar characteristics unless otherwise specified, and the description thereof is partially omitted. do.

(1) FIG. 10 shows a closing member 220 of a refractory device according to a second embodiment of the present invention. The closing member 220 includes a plurality of (eight in this embodiment) groove portions 225 that divide the inner peripheral portion 222 into a plurality of divided pieces 226 in the circumferential direction. Specifically, as shown in FIG. 10, each groove portion 225 is radially carved radially outward from the inner peripheral portion 222 surface of the sponge body 221 at a predetermined depth in front view (or cross-sectional shape). It is a groove and extends continuously in the same cross-sectional shape over the entire axial direction. Further, each groove portion 225 is formed at a radial depth that does not reach the outer peripheral portion 223 of the closing member 220. Each groove portion 225 has a front view V-shape having a predetermined width in the circumferential direction in the inner peripheral portion 222. As a result, in the original shape of the closing member 220 before compression deformation, the adjacent divided pieces 226 are separated from each other across the groove portion 225 without contacting each other. Further, in the present embodiment, the plurality of groove portions 225 have the same shape and are arranged at equal intervals in the circumferential direction. On the other hand, the circumferential width of each divided piece 226 (the arc length on the same circumference centered on the cylinder axis of the divided piece 226) is uniform, but the radial length (the end portion on the outer peripheral surface side of the divided piece 226). The radial distance from the tip surface to the tip surface) is non-uniform. That is, the radial lengths of the adjacent divided pieces 226 are different. In particular, the plurality of divided pieces 226 are composed of a first divided piece 226-1 having a relatively large radial length and a second divided piece 226-2 having a relatively small radial length. Then, the first divided piece 226-1 and the second divided piece 226-2 are alternately continuous in the circumferential direction. Further, the tip portion having a small circumferential width of the first split piece 226-1 is more easily deformed in the radial direction than the tip portion of the second split piece 226-2. That is, the tall first divided piece 226-1 that is easily deformed and the second short divided piece 226-2 that is hard to be deformed are alternately arranged in the circumferential direction. As described above, since the radial lengths of the divided pieces 226 are non-uniform, the inner peripheral portion 222 of the closing member 220 can be deformed more randomly as a whole, and the outer circumferences of various wiring / piping materials can be deformed more randomly. It is possible to exhibit high adhesion to the shape.

(2) FIG. 11 shows the closing member 320 of the refractory device according to the third embodiment of the present invention. The closing member 320 includes a plurality of (16 in this embodiment) groove portions 325 that divide the inner peripheral portion 322 into a plurality of divided pieces 326 in the circumferential direction. Specifically, as shown in FIG. 11, each groove portion 325 is radially carved at a predetermined depth from the inner peripheral portion 322 surface of the sponge body 321 in a radial direction from the surface of the inner peripheral portion 322 of the sponge body 321 in a front view (or cross-sectional shape). It extends continuously with the same cross-sectional shape over the entire axial direction. Further, each groove portion 325 is formed at a radial depth that does not reach the outer peripheral portion 323 of the closing member 320. Each groove portion 325 has a front view V-shape having a predetermined width in the circumferential direction in the inner peripheral portion 322. As a result, in the original shape of the closing member 320 before compression deformation, the adjacent divided pieces 326 are separated from each other across the groove portion 325 without abutting. Further, in the present embodiment, the plurality of groove portions 325 have the same shape and are unevenly arranged in the circumferential direction. On the other hand, the radial length of each divided piece 326 (the radial distance from the outer peripheral surface side end portion of the divided piece 326 to the tip surface) is uniform, but the circumferential width (centered on the cylinder axis of the divided piece 326). Arc length on the same circumference) is non-uniform. The split piece 326 having a smaller circumferential width is more likely to be deformed in the radial direction. The plurality of divided pieces 326 are composed of the first to fourth divided pieces 326-1, 2, 3, and 4 in order from the one having the largest width. In the arc region having a central angle of 90 degrees in the front view of the closing member 320, the first divided pieces 326-1 to the fourth divided pieces 326-4, which are large in the circumferential direction, are arranged in order of size. Then, each arc region including the four divided pieces 326-1 to 4 is arranged so as to be point-symmetrical in a plan view. In this way, the circumferential spacing of each groove 325 is uneven, and the circumferential width of the divided pieces 326 is uneven, so that the inner peripheral portion 322 of the closing member 320 is deformed more randomly as a whole. It is possible to exhibit high adhesion to the outer peripheral shapes of various wiring and piping materials.

(3) FIG. 12 shows the closing member 420 of the refractory device according to the fourth embodiment of the present invention. The closing member 420 includes a plurality of groove portions 425 that divide the inner peripheral portion 422 into a plurality of dividing pieces 426 in the circumferential direction. As shown in FIG. 12, the shape of the groove portion is not limited to the V-shaped front view. That is, the groove portion 425 is a combination of a rectangular inner portion that opens to the inner peripheral side and an elongated cone-shaped outer portion. In other words, the split piece 426 has a tapered shape that is a combination of two trapezoids. It is advantageous that the closing member 420 having this shape is selected when there is a relatively deep fine groove on the outer peripheral surface of the wiring / piping material. Further, as shown in FIG. 12 (c), the closing member 420 of the present embodiment has an original shape and is in the form of a sheet, but by being wound into a cylindrical shape at the time of installation, it becomes visible in FIGS. 12 (a) and 12 (b). It transforms into the indicated cylindrical shape.

(4) FIG. 13 shows a closing member 520 of the refractory device according to the fifth embodiment of the present invention. The closing member 520 includes a plurality of groove portions 525 that divide the inner peripheral portion 522 into a plurality of dividing pieces 526 in the circumferential direction. In the closing member 520 of the present embodiment, as shown in FIG. 13, the divided piece 526 is formed as a U-shaped ridge, and the radial depth of the groove portion 525 is smaller than the total diameter. It is advantageous that the closing member 520 having this shape is selected when there are many fine irregularities on the outer peripheral surface of the wiring / piping material.

(5) FIG. 14 shows a closing member 620 of the refractory device according to the sixth embodiment of the present invention. The closing member 620 includes a plurality of groove portions 625 that divide the inner peripheral portion 622 into a plurality of dividing pieces 626 in the circumferential direction. In the closing member 620 of the present embodiment, as shown in FIG. 14, the groove portion 625 is formed as a notch having no significant width in the circumferential direction. Then, in the original shape, the adjacent divided pieces 626 are in contact with each other. In the closing member 620 having the same shape, the degree of freedom of deformation of the divided pieces 626 is lower than that of the groove having a predetermined width, but at least the plurality of divided pieces 626 are individually compressed and deformed in the circumferential direction for wiring. It can be in close contact with the outer peripheral surface of the piping material. In the closing member 620 of the embodiment, the slit portion is omitted.

(6) FIG. 15 shows a closing member 720 of the refractory device according to the seventh embodiment of the present invention. The closing member 720 includes a plurality of groove portions 725 that divide the inner peripheral portion 722 into a plurality of dividing pieces 726 in the circumferential direction. In the closing member 720 of the present embodiment, as shown in FIG. 15, the groove portion 725 extends not in the entire axial direction of the closing member 720 but in a part of the axial direction. That is, the groove portion 725 and the divided piece 726 may be formed at a specific position in the axial direction. In the closing member 720 having this shape, the plurality of divided pieces 726 are individually compressed and deformed in the circumferential direction at the points where the tip surfaces of the divided pieces 726 of the wiring / piping material come into contact with each other to form the outer peripheral surface of the wiring / piping material. It can be in close contact. In the closing member 720 of the embodiment, the slit portion is omitted.

(7) FIG. 16 shows the closing member 820 of the refractory device according to the eighth embodiment of the present invention. The closing member 820 includes a plurality of groove portions (divided portions) 825 that divide the inner peripheral portion 822 into a plurality of divided pieces 826 in the circumferential direction. Each groove portion 825 extends from the inner peripheral portion 822 to the outer peripheral portion 823 so as to cut or divide the sponge body 821 in the radial direction, and the plurality of divided pieces 826 are completely separated from each other. That is, the plurality of divided pieces 826 are separated in the circumferential direction in a block shape by the groove portion 825 that cuts the wall portion of the closing member 820 (sponge body 821) along the radial direction. As a result, the independence of each divided piece 826 in compression deformation can be further improved, and the blockage between the wiring / piping material and the refractory main body can be enhanced. Further, preferably, the workability is improved by fixing each block-shaped divided piece 826 to the refractory main body by adhesion or the like.

(8) FIG. 17 shows a closing member 920 of the refractory device according to the ninth embodiment of the present invention. The closing member 920 includes a plurality of groove portions 925 that divide the inner peripheral portion 922 into a plurality of dividing pieces 926 in the circumferential direction. Each groove portion 925 extends from the inner peripheral portion 922 to the outer peripheral portion 923 of the closing member 920 so as to cut the closing member 920 in the radial direction, and the plurality of divided pieces 926 are completely separated from each other. That is, the plurality of divided pieces 926 are separated in the circumferential direction in a block shape by the groove portion 925 that cuts the wall portion of the closing member 920 (sponge body 921) in the radial direction. Further, the closing member 920 further includes a connecting sheet (connecting body) 929 for connecting the adjacent divided pieces 926 of the plurality of divided pieces 926 on the outer peripheral side. The connecting sheet 929 can be selected from a non-woven fabric or the like. By connecting each of the divided pieces 926 separated from the connecting sheet 929 on the outside of the outer peripheral portion 923 of the closing member 920, the closing member 920 can be easily carried and installed while maintaining independence in compression deformation of each divided piece 926. Will be. The connecting sheet may be one that connects some of the divided bodies. Further, the connecting body does not have to be in the form of a sheet, and may be a metal piece such as a staple.

(9) The closing member of the present invention can take various shapes other than the above-mentioned embodiments shown in the figure. For example, the cross-sectional shape (eg, circumferential width or radial depth) of the groove portion of the closing member may change in the axial direction. Further, the closing member may be one in which the circumferential width, spacing and radial depth of the groove portion, and a part or all of the circumferential width and the radial length of the divided piece are irregularly formed. .. Further, the cross-sectional shape of the inner peripheral portion and the outer peripheral portion of the closing member is not limited to the circumferential shape, and may be any shape such as an ellipse, an ellipse, a polygonal shape, and a distorted shape, and wiring / piping. It can be optimally selected according to the material and the form of the penetrating portion. The closing member may have a non-uniform shape in the axial direction, such as a tapered shape.

(10) FIG. 18 shows a cross-sectional view of a fireproof structure 100 according to another embodiment of the present invention. In the fireproof structure 100, the wiring / piping material 104 is inserted through the penetration portion 103 formed by penetrating the fireproof partition 102 of the building in the axial direction, and the inner peripheral surface of the penetration portion 103 and the wiring / piping material 104. A refractory tool 101 is provided between the outer peripheral surface and the outer peripheral surface. The refractory tool 101 is made of a heat-expandable material that expands due to heat, is fixed in the penetrating portion 103, and surrounds the outer peripheral surface of the wiring / piping material 104 with a predetermined gap, and the wiring / piping. Between the closing member 1020, which is compressed and deformed so as to close the gap between the refractory main body 1010 and the wiring / piping material 104 by inserting the material 104, and the inner peripheral surface of the penetrating portion 103 and the outer peripheral surface of the refractory main body 1010. It is provided with an outer frame 1030 arranged in. In this embodiment, the refractory body 1010 is formed as a tubular body without a flange. That is, the refractory main body 1010 includes a tubular portion 1011 and a closed portion 1013 (tongue piece 1013a). The outer frame 1030 is made of a heat-resistant metal piece, and has a tubular portion 1031 into which the refractory main body 1010 is inserted, and a flange portion 1032 protruding from the outer periphery of the tubular portion 1031. In the present embodiment, the outer frame 1030 can be easily arranged with respect to the penetrating portion 103 by bringing the flange portion 1032 of the outer frame 1030 into contact with the peripheral edge of the penetrating portion 103, and the inside of the penetrating portion 103. It is possible to stably hold the refractory main body 1010 in the tubular portion 1031 of the outer frame 1030 regardless of the peripheral surface shape and the surface condition. Needless to say, even in the modified example, the action and effect of the present invention can be exerted. That is, the fireproof structure of the present invention can be arbitrarily modified or modified as long as it can be assumed by those skilled in the art.

(11) In the closing member of the above embodiment, the adjacent divided pieces among the plurality of divided pieces may have different compression ratios in terms of materials. By controlling the material density and the material of the sponge body so as to be partially changed, the compressibility of the adjacent divided pieces can be changed. For example, the divided pieces are formed of materials having different compression rates and then the divided pieces are integrally bonded in the circumferential direction, or the separated divided pieces having different compression rates are arranged in the circumferential direction as shown in FIGS. 16 and 17. With, the compression ratio of the adjacent divided pieces can be changed. That is, by deforming the adjacent divided pieces at different compression rates, the inner peripheral portion of the closing member can be deformed more randomly as a whole, and high adhesion to the outer peripheral shapes of various wiring / piping materials can be achieved. Can be demonstrated. In particular, in the form of the closing member 220 of FIG. 10, the compressibility of the radialally long (tall) first split piece 226-1 is reduced to the radialally short (short) second split piece 226-. It is preferably higher than 2. That is, in the inner peripheral portion 222 of the closing member 220, the first divided piece 226-1 protruding inward from the second divided piece 226-2 is relative to the outer surface of the wiring / piping material. It is easy to make strong contact with the product from a close distance. Therefore, by relatively increasing the compression rate (easiness of compression) of the first divided piece 226-1, the inner peripheral portion 222 of the closing member 220 can be in close contact with the wiring / piping material in a well-balanced manner as a whole. Will be.

(12) In the refractory of the above embodiment, the refractory body is not limited to the heat-expandable rubber, and may be a heat-expandable foam having a predetermined cushioning property. For example, the refractory body may be made of the same or similar material as the closing member. Further, the refractory main body and the closing member made of the same material may be integrally held. Further, the refractory main body may be composed of two or more parts including a heat-expandable member and a non-heat-expandable member.

(13) In the refractory of the above embodiment, the refractory main body and the closing member have a slit portion for arranging the wiring / piping material inside from the radial direction, but instead of providing the slit portion, the refractory main body Alternatively, the closing member may be formed in a half-split shape divided into two along the axial direction. In this case, the wiring / piping material can be arranged inside by joining the half-split bodies so as to sandwich the wiring / piping material.

(14) The refractory main body of the present invention is not limited to the embodiment described above. The cross-sectional shape of the fireproof body is not limited to the annular shape, but may be any shape such as an oval shape, an ellipse, a polygonal shape, a distorted shape, etc., depending on the shape of the wiring / piping material and the penetrating portion. Can be optimally selected. Further, the refractory main body may have a shape that is not uniform in the axial direction, such as a tapered shape. Further, the tongue piece (closed portion) may be omitted from the refractory body. Alternatively, the tongue piece (closed portion) may be formed at a position different from that of the above embodiment, for example, one end in the axial direction on the front side of the wall.

(15) In the fireproof structure of the above embodiment, one wiring / piping material is inserted in the refractory tool, but a plurality of wiring / piping materials may be inserted in the refractory tool. When a large number of wiring / piping materials are inserted through the penetrating portion and arranged, the diameter of the inner peripheral portion of the closing member is changed to each wiring / piping in order to follow and deform the shape of the inner peripheral portion of the closing member to the bundle of the wiring / piping material. It is preferable to make it relatively small with respect to the diameter of the material. For example, when the amount of wiring / piping material is large, the diameter of the inner peripheral portion of the closing member may be set to the minimum (as much as the diameter of the needle) so as to increase the compression amount of the sponge body. On the other hand, when the number of wiring / piping materials is one or a small amount, the diameter of the inner peripheral portion of the closing member may be determined according to the diameter of the wiring / piping material as in the above embodiment.

(16) In the above embodiment, the refractory main body is made of a heat-expandable material, and the closing member is made of a heat-expandable material or a non-heat-expandable material. However, the refractory body may be made of a non-thermally expandable flame-retardant or heat-resistant material such as a metal cylinder (see, for example, the outer frame 1030 of FIG. 18), and the closure member may be made of a heat-expandable material.
That is, the refractory equipment is
A refractory body made of a non-thermally expandable flame-retardant (heat-resistant) material, fixed in the penetration portion, and surrounding the outer peripheral surface of the wiring / piping material with a predetermined gap.
A heat-expandable closing member that is compressed and deformed so as to close the gap between the refractory main body and the wiring / piping material by inserting the wiring / piping material is provided.
The closing member includes a plurality of groove portions for axially dividing the inner peripheral portion of the closing member facing the outer peripheral surface of the wiring / piping material, and a plurality of dividing pieces formed between the plurality of groove portions. The plurality of divided pieces are individually compressed and deformed in the axial direction to be in close contact with the outer peripheral surface of the wiring / piping material.
Also in the refractory of the present embodiment, as in the above embodiment, the inner peripheral portion of the compression-deformable closing member is provided with a plurality of groove portions for dividing the inner peripheral portion into a plurality of divided pieces in the circumferential direction. Therefore, it is possible for the closing member to more reliably close the gap between the wiring / piping material and the refractory main body.

It goes without saying that some or all of the features of each of the above-described embodiments and modifications may be combined and applied to refractory structures, refractory tools and closing members.

The present invention is not limited to the above-described embodiments and modifications, and can be carried out in various embodiments as long as it belongs to the technical scope of the present invention.

10 Fireproof structure 11 Fireproof equipment 12 Fireproof compartment 13 Penetration part 14 Wiring / piping material 110 Fireproof equipment body 111 Cylindrical part 112 Flange part 113 Closing part 113a Tongue piece 114 Slit part 120 Closing member 121 Sponge body 122 Inner peripheral part 123 Outer circumference Part 124 Sheet body (friction resistance reducing member)
125 Groove (diameter groove)
126 Divided piece 127 Slit part 929 Connecting sheet (connecting body)
1030 Outer frame 1031 Cylindrical part 1032 Flange part

Claims (8)

Wiring / piping material is inserted into a penetrating portion formed by penetrating the fireproof compartment of a building in the axial direction, and a refractory tool is placed between the inner peripheral surface of the penetrating portion and the outer peripheral surface of the wiring / piping material. It is a fireproof structure provided
The refractory equipment is
A refractory body made of a non-thermally expandable flame-retardant material, fixed in the penetration portion, and surrounding the outer peripheral surface of the wiring / piping material with a predetermined gap.
A heat-expandable closing member that is compressed and deformed so as to close the gap between the refractory main body and the wiring / piping material by inserting the wiring / piping material is provided.
The closing member includes a plurality of grooves that divide the inner peripheral portion of the closing member facing the outer peripheral surface of the wiring / piping material into a plurality of divided pieces in the circumferential direction, and the plurality of divided pieces each other in the circumferential direction. A fireproof structure characterized in that it is individually compressed and deformed and is in close contact with the outer peripheral surface of the wiring / piping material. The fireproof structure according to claim 1, wherein the refractory main body has cushioning properties. The first or second claim is characterized in that the groove portion extends over a part of the axial direction of the closing member, and the groove portion and the divided piece are formed at a specific position in the axial direction. The fireproof structure described. The fireproof structure according to any one of claims 1 to 3, wherein the radial depth of the groove portion changes in the axial direction. Wiring / piping material is inserted into a penetrating portion formed by penetrating the fireproof compartment of a building in the axial direction, and is provided between the inner peripheral surface of the penetrating portion and the outer peripheral surface of the wiring / piping material. It ’s a fireproof tool,
A cushioning refractory body, which is made of a heat-expandable material that expands due to heat, is fixed in the penetration portion, and surrounds the outer peripheral surface of the wiring / piping material with a predetermined gap.
A compression-deformable closing member for inserting the wiring / piping material and closing the gap between the refractory main body and the wiring / piping material is provided.
The closing member includes a plurality of grooves that divide the inner peripheral portion of the closing member facing the outer peripheral surface of the wiring / piping material into a plurality of divided pieces in the circumferential direction, and the plurality of divided pieces each other in the circumferential direction. A refractory tool characterized in that it can be individually compressed and deformed so as to be in close contact with the outer peripheral surface of the wiring / piping material. The refractory device according to claim 5, wherein the refractory body and the closing member are made of the same material. The refractory tool according to claim 5 or 6, wherein the groove portion is formed as a notch having no significant width in the circumferential direction, and the adjacent divided pieces are in contact with each other in the original shape. Wiring / piping material is inserted into a penetrating portion formed by penetrating the fireproof compartment of a building in the axial direction, and a fireproof tool is provided between the inner peripheral surface of the penetrating portion and the outer peripheral surface of the wiring / piping material. In the provided fireproof structure, a predetermined gap is formed between the fireproof main body fixed in the penetrating portion so as to surround the outer peripheral surface of the wiring / piping material and the outer peripheral surface of the wiring / piping material. A closing member that is compressed and deformed to close.
Made of heat-expandable material
A plurality of grooves are provided to divide the inner peripheral portion of the closing member facing the outer peripheral surface of the wiring / piping material into a plurality of divided pieces in the circumferential direction.
A closing member, characterized in that the plurality of divided pieces are individually compressed and deformed in the circumferential direction and can be brought into close contact with the outer peripheral surface of the wiring / piping material.

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