JP7320576B2 - Refractories and closures - Google Patents

Description

TECHNICAL FIELD The present invention relates to a fireproof structure in which fireproof measures are applied to the penetrating portion of a fireproof partition of a building, and to a fireproof member and a closing member used in the fireproof structure.

Conventionally, when wiring and piping materials such as cables and protective tubes (flexible tubes) are arranged through a fireproof compartment of a building, a penetration is drilled through the fireproof compartment and the wiring is routed through the penetration.・Install piping materials. In such a fireproof compartment, it is required to take fireproof measures in the through portion. In other words, when a fire breaks out in the space on the front side of one wall of the fire prevention compartment, the flame, smoke, toxic gas, etc. generated on one side are prevented from flowing into the space on the other side through the penetration part. , the penetration must be completely occluded. In addition, a fireproof structure such as that disclosed in Japanese Patent Laid-Open No. 2002-300000 has been proposed, which seals the gap between the penetration portion and the wiring/piping material in the event of a fire.

Patent Literature 1 discloses a fireproof structure for a penetration. In the following paragraphs, the reference numerals of Patent Document 1 are shown in parentheses. In the fireproof structure of the penetration part 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) A thermally expandable refractory (11) is provided between the outer peripheral surface of the In this fireproof structure of the penetrating part, the thermally expandable fireproof fitting (11) is arranged to surround the outer peripheral surface of the electrical 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 a foaming 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) with its inner and outer diameters 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) pushes away the tongue (16c) and does not fill the gap (Ka) until it reaches the back of the through hole (Wa). is prevented from jumping out.

JP-A-2014-7892

In a conventional fire-resistant structure such as that disclosed in Patent Document 1, a single foam material is filled so as to close the gap between the wiring/piping material and the fire-resistant body. However, in such a conventional fire-resistant structure, a single foam material is deformed and changed as a whole, so a gap is likely to be formed between the wiring and piping materials. In particular, the wiring/piping material is not straight due to curling or the like, the outer shape of the wiring/piping material itself is uneven, and there is an object (fireproof material in Patent Document 1) between the wiring/piping material and the foam material. In the case where a tongue piece of the tool body is interposed, a gap is likely to be formed at least along the circumferential direction of the wiring/piping material. The presence of such a gap reduces the blockage rate of the through-hole, increasing the risk of fire, smoke, toxic gas, etc., passing through the fireproof partition.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and its object is to provide a fire resistant structure, a fire resistant tool, and a closing member that more reliably closes the penetrating part of the fire protection compartment.

In one aspect of the fireproof structure of the present invention, wiring/piping members are inserted through a penetrating portion formed by penetrating a fireproof partition of a building, and the inner peripheral surface of the penetrating portion and the outer peripheral surface of the wiring/piping member. A fireproof structure in which a fireproof tool is provided between
The refractory is
a refractory main body made of a thermally expandable material that expands due to heat, fixed in the through portion, and surrounding the outer peripheral surface of the wiring/piping material with a predetermined gap;
a closing member compressively deformed so as to insert the wiring/piping material and close the gap between the refractory main body and the wiring/piping material;
The blocking member has a plurality of grooves for dividing an inner peripheral portion of the blocking member facing the outer peripheral surface of the wiring/piping material into a plurality of split pieces in the circumferential direction, and the plurality of split pieces are circumferentially arranged with each other. It is characterized in that it is individually compressed and deformed to closely adhere to the outer peripheral surface of the wiring/piping material.

According to the fireproof structure of the present invention, the inner peripheral portion of the compressively deformable closing member surrounding the outer peripheral surface of the wiring/piping material has a plurality of grooves for dividing the inner peripheral portion into a plurality of divided pieces in the circumferential direction. is provided. The groove is formed on the inner peripheral surface with a predetermined groove depth, and divides the adjacent divided pieces so that they can be individually and freely deformed in the circumferential direction. As a result, the inner peripheral portion of the closing member divided in the peripheral direction by the groove portion can be deformed more randomly and fluidly according to the shape of the contacting target. That is, even if the shape of the outer peripheral surface of the wiring/piping material is not simple due to curling or other factors, the inner peripheral portion of the blocking member is designed so that each split piece can be individually adapted to the relatively complicated shape of the wiring/piping material. By following the compression deformation, it is possible to adhere well to the outer peripheral surface of the wiring/piping material in the circumferential direction. Therefore, in the fireproof structure of the present invention, it is possible for the closing member to more reliably close the gap between the wiring/piping material and the fireproof body.

A fire resistant structure according to a further aspect of the present invention is the fire resistant structure according to the above aspect, wherein the blocking member that closes the gap between the fire resistant equipment body and the wiring/piping material has a radial thickness equal to the diameter of the fire resistant equipment body. It is characterized by being larger than the thickness in the direction. That is, since the radial thickness of the refractory body made of the thermally expansive member is larger than the radial thickness of the blocking member, the gap between the wiring/piping material and the refractory body becomes relatively large. Installation of materials becomes easier.

A fire-resistant structure of a further aspect of the present invention is the fire-resistant structure of one aspect described above, wherein 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 member. characterized by That is, the frictional resistance reduction member is interposed between the inner peripheral portion of the blocking member and the outer peripheral surface of the wiring/piping material, so that the blocking member allows the wiring/piping material to move in the axial direction. The wiring/tubing material can be inserted into the refractory body and maintained within the refractory body when the wiring/tubing material moves in the axial direction.

According to a further aspect of the fire resistant structure of the present invention, in the fire resistant structure of the one aspect described above, the frictional resistance reducing member comprises a plurality of sheet members adhered to the (radial direction) end surfaces of the respective split pieces. Characterized by That is, by forming the frictional resistance reducing member from a plurality of sheet members adhered to the tip end surfaces of the split pieces, it is possible to effectively reduce the frictional resistance between the tip end surfaces of the split pieces and the wiring/piping materials. can.

A fire-resistant structure of a further aspect of the present invention is the fire-resistant structure of one aspect described above, wherein each of the grooves is formed with a radial depth that does not reach the outer peripheral portion of the closure member, and the plurality of divided pieces are formed in the closure member. It is characterized by being connected in the outer peripheral part. That is, each groove does not completely cut the wall of the blocking member, and the plurality of split pieces are connected to the outer peripheral portion of the blocking member, thereby ensuring the adhesion of the wiring/piping material to the outer peripheral surface. At the same time, portability and installation of the closing member are facilitated.

According to a further aspect of the present invention, in the fire resistant structure of the aspect described above, each of the grooves reaches from the inner peripheral portion to the outer peripheral portion of the closing member so as to cut the closing member in a radial direction, and the A plurality of split pieces are separated at the outer peripheral portion of the closing member, and the split pieces adjacent to each other in the gap are deformed and brought into close contact with each other. In other words, the plurality of split pieces are separated in the circumferential direction into blocks by the groove portion that cuts the wall portion of the blocking member in the radial direction.・It is possible to increase the sealing property between the piping material and the fireproof body. In this specification, the term "groove" is defined as an element that divides the inner periphery of the blocking member, and is a concept that includes a space that completely separates the peripheral wall of the blocking member.

According to a further aspect of the fire resistant structure of the present invention, in the fire resistant structure of the aspect described above, the closing member connects at least a portion 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 connector. That is, by connecting the split pieces from which the connector is separated at the outer peripheral portion of the closure member, the closure member can be easily carried and installed while maintaining a high degree of independence in compressive deformation of each split piece.

According to a further aspect of the present invention, in the fire resistant structure of the above aspect, adjacent split pieces among the plurality of split pieces have different compression ratios. That is, by deforming the adjacent split pieces with different compression ratios, it becomes possible to deform the inner peripheral portion of the blocking member as a whole more randomly, resulting in high adhesion to the outer peripheral shape of various wiring and piping materials. It is possible to demonstrate

In one form of the fireproof device of the present invention, a wiring/piping member is inserted through a penetrating portion formed by penetrating a fireproof partition of a building, and the inner peripheral surface of the penetrating portion and the outer peripheral surface of the wiring/piping member. A refractory provided between
a refractory main body made of a thermally expandable material that expands due to heat, fixed in the through portion, and surrounding the outer peripheral surface of the wiring/piping material with a predetermined gap;
a compression-deformable closing member that inserts the wiring/piping material to close a gap between the refractory main body and the wiring/piping material;
The blocking member has a plurality of grooves for dividing an inner peripheral portion of the blocking member facing the outer peripheral surface of the wiring/piping material into a plurality of split pieces in the circumferential direction, and the plurality of split pieces are circumferentially arranged with each other. It is characterized in that it can be individually compressed and deformed to be in close contact with the outer peripheral surface of the wiring/piping material.

According to the fireproof device of the present invention, the inner peripheral portion of the compressively deformable blocking member surrounding the outer peripheral surface of the wiring/piping material has a plurality of grooves for dividing the inner peripheral portion into a plurality of divided pieces in the circumferential direction. is provided. The groove is formed on the inner peripheral surface with a predetermined groove depth, and divides the adjacent divided pieces so that they can be individually and freely deformed in the circumferential direction. As a result, the inner peripheral portion of the closing member divided in the peripheral direction by the groove portion can be deformed more randomly and fluidly according to the shape of the contacting target. That is, even if the shape of the outer peripheral surface of the wiring/piping material is not simple due to curling or other factors, the inner peripheral portion of the blocking member is designed so that each split piece can be individually adapted to the relatively complicated shape of the wiring/piping material. By following the compression deformation, it is possible to adhere well to the outer peripheral surface of the wiring/piping material in the circumferential direction. Therefore, in the fire-resistant fitting of the present invention, the closing member can more reliably close the gap between the wiring/piping material and the fire-resistant fitting body.

According to a further aspect of the present invention, in the fire-resistant tool of the one aspect described above, the plurality of split pieces have non-uniform radial lengths. That is, since the radial lengths of the split pieces are uneven, the inner peripheral portion of the blocking member can be deformed more randomly as a whole, and the outer peripheral shape of various wiring/piping materials can be easily deformed. It becomes possible to exhibit adhesion.

According to a further aspect of the present invention, in the fire-resistant tool of the one aspect described above, the intervals in the circumferential direction of the plurality of grooves are uneven. In other words, the unequal spacing of the grooves in the circumferential direction makes it possible to deform the inner circumference of the blocking member more randomly as a whole, resulting in high adhesion to the outer circumference of various wiring and piping materials. It is possible to demonstrate sexuality.

According to a further aspect of the present invention, in the refractory tool of the one aspect described above, the plurality of grooves have non-uniform widths in the circumferential direction. That is, since the circumferential width of each groove is uneven, it is possible to deform the inner circumference of the blocking member more randomly as a whole, resulting in high adhesion to the outer circumference of various wiring and piping materials. It is possible to demonstrate

According to a further aspect of the present invention, in the refractory of the above aspect, each of the grooves is formed to have a radial depth that does not reach the outer peripheral portion of the closing member, and the plurality of divided pieces are formed on the closing member. It is characterized by being connected in the outer peripheral part. That is, each groove does not completely cut the wall of the blocking member, and the plurality of split pieces are connected to the outer peripheral portion of the blocking member, thereby ensuring the adhesion of the wiring/piping material to the outer peripheral surface. At the same time, portability and installation of the closing member are facilitated.

According to a further aspect of the present invention, there is provided a fire-resistant tool according to the one aspect described above, wherein each of the grooves extends from the inner peripheral portion to the outer peripheral portion of the closing member so as to cut the closing member in a radial direction, and the A plurality of split pieces are separated from each other. That is, a plurality of split pieces are separated in a block shape in the circumferential direction by a groove portion that cuts the wall portion of the blocking member in the radial direction.・It is possible to increase the sealing property between the piping material and the fireproof body.

According to a further aspect of the present invention, in the fire resistant appliance of the one aspect described above, the closing member connects at least a portion 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 connector. That is, by connecting the split pieces from which the connector is separated at the outer peripheral portion of the closure member, the closure member can be easily carried and installed while maintaining the independence of each split piece in compressive deformation.

According to a further aspect of the present invention, in the refractory tool of the one aspect described above, the closing member has thermal expansibility that expands due to heat. That is, since the closing member is thermally expansive, it is possible to more reliably close the through portion by thermally expanding together with the fireproof device body in the event of a fire.

According to a further aspect of the present invention, in the above aspect of the fire-resistant equipment, the fire-resistant equipment main body has cushioning properties. That is, since the fire-resistant main body has a cushioning property, it is possible to bring the outer peripheral surface of the fire-resistant main body and the inner peripheral surface of the through portion in closer contact with each other.

According to a further aspect of the present invention, in the fire-resistant equipment according to the above aspect, the fire-resistant equipment main body has a hooking portion that hooks onto the peripheral edge of the penetrating portion of the fireproof partition. That is, by arranging the hooking portion of the fireproof device main body in contact with the peripheral edge of the penetration portion of the fireproof partition, the fireproof device can be easily installed in the penetration portion.

A further aspect of the present invention is a refractory in the refractory of one aspect described above, which has a tubular portion for inserting the refractory main body and a flange protruding from the outer circumference of the tubular portion, and the inner circumference of the through portion. It is characterized by further comprising an outer frame disposed between the surface and the outer peripheral surface of the fireproof main body. That is, the flange portion of the outer frame is brought into contact with the peripheral edge of the through portion, so that the outer frame can be easily arranged with respect to the through portion. It is possible to stably hold the refractory main body in the cylindrical portion of the.

According to a further aspect of the present invention, there is provided a refractory in accordance with the above aspect, wherein at least one of the refractory main body and the closing member has an opening for radially arranging the wiring/piping member inside. It is characterized by having a slit portion that divides the wall portion along the axial direction. The wiring/piping material can be arranged in the fireproof body or the closing member from the radial direction through the slit. As a result, the refractory can be attached to the wiring/piping material previously installed in the wall hole.

A closing member according to one aspect of the present invention is a fireproof structure provided in a penetration portion formed by penetrating a fireproof partition of a building, wherein the wiring/piping material is inserted to close the gap generated in the penetration portion. A closing member that closes,
an annular compression-deformable sponge body having an inner circumference and an outer circumference;
a plurality of grooves dividing the inner peripheral portion of the closing member facing the outer peripheral surface of the wiring/piping material into a plurality of split pieces in the circumferential direction,
The plurality of split pieces are individually compressed and deformed in the circumferential direction so as to be tightly attached to the outer peripheral surface of the wiring/piping member.

According to the blocking member of the present invention, the inner peripheral portion of the compressively deformable blocking member that 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. is provided. The groove is formed on the inner peripheral surface with a predetermined groove depth, and divides the adjacent divided pieces so that they can be individually and freely deformed in the circumferential direction. As a result, the inner peripheral portion of the closing member divided in the peripheral direction by the groove portion can be deformed more randomly and fluidly according to the shape of the contacting target. That is, even if the shape of the outer peripheral surface of the wiring/piping material is not simple due to curling or other factors, the inner peripheral portion of the blocking member is designed so that each split piece can be individually adapted to the relatively complicated shape of the wiring/piping material. By following the compression deformation, it is possible to adhere well to 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 gaps generated around the wiring/piping material in the through portion due to the shape of the wiring/piping material.

According to the present invention, the gap between the wiring/piping material and the fire-resistant equipment body can be more reliably closed by the closing member in the penetrating portion formed in the fire-resistant compartment, and the fire-resistant measures can be taken more effectively. It is possible.

1 is a schematic perspective view of a fire resistant structure according to one embodiment of the present invention; FIG. 1 is an exploded perspective view of a refractory according to one embodiment of the present invention; FIG. The perspective view seen from the (a) front of the refractory main body of the refractory of FIG. 2, and (b) the perspective view seen from the back. (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 closing member of the refractory of FIG. 2 . (a) BB cross-sectional view and (b) CC cross-sectional view of the refractory of FIG. 2 is a schematic cross-sectional view of the refractory structure of FIG. 1; FIG. (a) DD sectional view and (b) EE sectional view of the refractory structure of FIG. FIG. 2 is a schematic diagram showing one step of constructing the refractory structure of FIG. 1; (a) Perspective view and (b) front view of the closure member of another embodiment of the present invention. (a) Perspective view and (b) front view of the closure member of another embodiment of the present invention. (a) Perspective view, (b) Front view and (c) Partially developed view of the closing member of another embodiment of the present invention. (a) Perspective view and (b) front view of the closure member of another embodiment of the present invention. (a) Perspective view and (b) front view of the closure 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 closure member of another embodiment of the present invention. (a) Perspective view and (b) front view of the closure member of another embodiment of the present invention. 4 is a schematic cross-sectional view of a fire-resistant structure according to another embodiment of the present invention; FIG.

An embodiment of the present invention will be described below with reference to the drawings. It should be noted that the shapes in the drawings referred to in the following description are conceptual diagrams or schematic diagrams for explaining preferred shapes and dimensions, and the dimensional ratios and the like do not necessarily match the actual dimensional ratios. That is, the present invention is not limited to the dimensional ratios in the drawings. Further, the up, down, left, and right directions in the present invention are merely concepts indicating relative positions, and needless to say, these can be interchanged and applied.

The fireproof structure 10 of the present embodiment prevents fire, smoke, toxic gas, etc. generated on one side from flowing into the space on the other side when a fire or the like breaks out in the space on the front side of one wall of the fireproof compartment 12. It is a wall structure that separates both spaces so as to prevent. FIG. 1 is a schematic perspective view of a refractory structure 10. FIG.

As shown in FIG. 1 , the fireproof structure 10 includes a penetration portion 13 formed by penetrating a fireproof partition 12 of a building in the axial direction (thickness direction). A fireproof member 11 is provided between the inner peripheral surface and the outer peripheral surface of the wiring/piping member 14 .

The fireproof partition 12 of the present embodiment is a hollow or solid fireproof wall with a predetermined thickness that is erected vertically. The fireproof compartment 12 may be constructed of gypsum board, concrete walls, or the like. A penetrating portion 13 having a diameter through which a wiring/piping member 14 having a predetermined thickness can pass is formed in the fireproof partition 12 . The penetrating portion 13 has a perfect circular shape, and the inner diameter thereof is formed to be substantially the same (slightly larger) than the outer diameter of the cylindrical portion 111 of the fire-resistant device 11 . It should be noted that the fireproof compartment of the present invention is a concept including structures such as ceilings and floors for fireproof compartments, and is not limited to the form of the present embodiment. 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 to this.

As shown in FIG. 2, the refractory 11 of the present embodiment is made of a thermally expandable material that expands due to heat. A refractory main body 110 fixed inside, and a closing member 120 compressively 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 therein. In this 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 fireproof device 11 of this embodiment will be described in detail.

The refractory main body 110 of this embodiment is integrally formed of a thermally expandable material that expands with heat and can maintain its original shape by itself. More specifically, the thermally expandable material is a thermally expandable rubber, and the thermally expandable rubber is an expansive material (e.g., an expandable material that expands to twice or more its volume before being heated when exposed to high heat (eg, 300° C. or higher)). Expanded graphite) is mixed, and the rubber is formed into a predetermined shape (which has undergone a molding process) and undergoes a vulcanization process. The vulcanization process is a process in which heat is applied to the rubber that has undergone the molding process to cause a vulcanization (crosslinking) reaction or adhesion reaction to obtain a product having rubber elasticity. The refractory main body 110 is elastically deformable and maintains its cylindrical shape (shape) by the thermally expandable rubber itself.

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

The cylindrical portion 111 is an annular body that is open at one end and linearly extends from one end to the other end with a uniform diameter along its axial direction. The inner peripheral surface of this hollow cylindrical tubular portion 111 has a circular 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 that is circular in cross section. That is, the thick portion (thermally expansive material) between the inner and outer peripheral surfaces of the cylindrical portion 111 is arranged between the inner peripheral surface of the penetrating portion 13 and the outer peripheral surface of the wiring/piping member 14 .

The outer diameter of the cylindrical portion 111 is formed substantially the same as the diameter of the through portion 13, and the shape (circular) of the outer peripheral surface and the shape (circular) of the through portion 13 are substantially the same. In addition, the inner diameter of the tubular portion 111 is larger than the diameter of the wiring/piping member 14, and when the wiring/piping member 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 member 14 are equal to each other. A gap of a predetermined size is formed between The inner diameter of the tubular portion 111 is larger than the thickness of the cylindrical wall (the 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 cylindrical portion 111 to close 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 to

The flange portion 112 is formed thin in the entire circumferential direction of the tubular portion 111 so as to extend radially from the outer peripheral edge of one end of the tubular portion 111 . The outer edge defining the contour of the flange portion 112 is circular and its diameter is larger than the diameter of the penetrating portion 13 . That is, the back surface of the flange portion 112 can abut against the peripheral wall surface of the penetration portion 13 , and functions as a hooking portion that latches onto the peripheral edge of the penetration portion 13 of the fire prevention partition 12 .

The closing portion 113 is thin like the flange portion 112 and closes the other end of the cylindrical portion 111 . This closure 113 is divided into a plurality of cuts through its center. That is, the closing portion 113 is formed with a plurality of tongue pieces 113a extending radially inward (center side) from the inner peripheral surface of the cylindrical portion 111 at the other end thereof. 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 closing portion 113 is deformed so as to open the end surface of the other end side of the tubular portion 111 so that the wiring/piping member 14 can pass through. In the closing portion 113, the tongues 113a are elastically restored after the wiring/piping material 14 is inserted, so that the tongues 113a come into close contact with the outer surface of the wiring/piping material 14 to close the end face again. (See FIG. 7).

A slit portion 114 is formed in the cylindrical portion 111 so as to extend along the entire axial direction and extend in a direction perpendicular to the axial direction (radial direction). The slit portion 114 cuts the cylindrical wall of the cylindrical portion 111 and the flange portion 112 along the entire axial direction, and divides the walls of the inner and outer peripheral surfaces in the axial direction. The slit portion 114 is opened by elastically deforming the cylindrical portion 111 outward. That is, the wiring/piping member 14 can be inserted into the insertion space from the radial direction through the slit portion 114 . The slit portion 114 is one of a plurality of cuts for forming the tongue piece 113a, and is used to form the tongue piece 113a.

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

As shown in FIGS. 5 and 6, the closing member 120 includes a hollow cylindrical (or annular) sponge body 121 extending in the axial direction and having openings 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 member 14 is defined on the inner peripheral surface of the closing member 120 (sponge body 121 ). An insertion portion for inserting the wiring/piping member 14 is defined in the internal space inside the inner peripheral portion 122 . The diameter of the inner peripheral portion 122 of the closing member 120 is smaller than the outer diameter of the wiring/piping member 14 . The diameter of the inner peripheral portion 122 of the blocking member 120 can be determined in accordance with the diameter of the wiring/piping material 14 to be planned, but in the original shape, the insertion portion (the tip of each split piece 126 It may be defined as a very small diameter hole (so that it touches in the middle). That is, even if the inner diameter of the blocking member 120 is significantly smaller than the diameter of the wiring/piping member 14, the inner peripheral portion 122 is compressed and deformed outward when the wiring/piping member 14 is forcibly inserted into the insertion portion. It is pushed and expanded. 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 member 14 becomes stronger. An outer peripheral portion 123 is defined on the outer peripheral surface of the closing member 120 to face the inner peripheral surface of the refractory main body 110 . The diameter of the outer peripheral portion 123 of the closing member 120 is substantially the same as the diameter of the inner peripheral surface of the refractory main body 110, or larger (so that it is compressed and deformed to be inserted). In addition, the radial thickness of the closing member 120 (the distance along the radial direction between the inner peripheral portion 122 and the outer peripheral portion 123 ) is greater than the radial thickness of the cylindrical portion 111 of the refractory main body 110 . That is, when the wiring/piping member 14 is arranged in the insertion portion of the blocking member 120 with the blocking member 120 inserted in the refractory main body 110, the sponge body 121 is compressed and deformed, and the wiring/piping member 14 and the wiring/piping member 14 are deformed. 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 blocking member 120 is at least larger than the volume of the assumed gap between the fireproof device 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 blocking member 120 is provided with a plurality of (eight in this embodiment) grooves 125 recessed in the surface of the inner peripheral portion 122 and dividing the inner peripheral portion 122 into a plurality of split pieces 126 in the circumferential direction. Specifically, as shown in FIGS. 5 and 6, each groove 125 is radially cut radially outward from the surface of the inner peripheral portion 122 of the sponge body 121 at a predetermined depth in a front view (or a cross-sectional shape). It is a groove that extends continuously with the same cross-sectional shape over the entire axial direction. Each groove 125 is formed with a radial depth that does not reach the outer peripheral portion 123 of the closing member 120 . That is, a plurality of split 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 split pieces 126 to each other. In the present embodiment, each groove portion 125 has a V-shape in a front view 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 split pieces 126 are not in contact with each other and are separated by the groove 125 . The grooves 125 separating the adjacent split pieces 126 guide the expansion in the width direction when the split pieces 126 are compressed and deformed in the radial direction (longitudinal direction). As will be described later, when each split piece 126 is elastically compressed and deformed, a part of the split piece 126 is deformed so as to occupy the groove 125, so that the adjacent split pieces 126 come into contact with each other without gaps (FIG. 8). reference). Moreover, in this embodiment, the plurality of grooves 125 have the same shape and are arranged at regular intervals in the circumferential direction. Then, the circumferential width of each split piece 126 (arc length on the same circumference centering on the cylindrical axis of the split piece 126) and the radial length (from the outer peripheral surface side end of the split piece 126 to the tip surface) radial distance) is uniform.

The sponge member 121 is formed with a slit portion 127 extending along the entire axial direction and extending in a direction perpendicular to the axial direction (radial direction). Then, the slit portion 127 is formed by cutting the meat portion connecting the adjacent split pieces 126 along the entire axial direction so as to communicate with one of the groove portions 125, and forming the wall portion between the inner peripheral portion 122 and the outer peripheral portion 123. is divided axially. However, this slit portion 127 may be formed at any position in the circumferential direction instead of between the split pieces 126 . The slit portion 127 is opened by elastically deforming the sponge body 121 outward. That is, the wiring/piping member 14 can be inserted into the insertion portion inside the inner peripheral portion 122 from the radial direction through the opened slit portion 127 . It is preferable that the closing member 120 is attached to the fireproof main body 110 after the slit portion 114 of the fireproof main body 110 and the slit portion 127 of the closing member 120 are aligned so as to communicate with each other.

Frictional resistance reducing members (a plurality of sheet members 124 ) are optionally provided on the inner peripheral portion 122 of the closing member 120 to reduce friction with the wiring/piping member 14 . Specifically, the frictional resistance reduction member is composed of a plurality of sheet members 124 adhered to the inner circumference of each split piece 126 . The sheet body 124 is made of a material (for example, nonwoven fabric) having a lower coefficient of friction than the surface of the sponge body 121 . By interposing the sheet body 124 between the outer peripheral surface of the wiring/piping member 14 and the inner peripheral portion 122 of the closing member 120, the frictional resistance between the wiring/piping member 14 and the closing member 120 is reduced, and the wiring is・Allow smooth movement of the piping material 14 in the axial direction. Then, when the wiring/piping member 14 is inserted into the blocking member 120 and moves in the axial direction, the blocking member 120 can be maintained within the refractory main body 110 . As for material properties, the coefficient of friction of the surface of the sponge body 121 of the closing member 120 is lower than the coefficient of friction of the surface of the refractory main body 110 made of thermally expandable rubber. That is, even if there is no adhesion of the frictional resistance reducing member or adhesion between the blocking member 120 and the refractory main body 110, the frictional force generated between the blocking member 120 and the refractory main body 110 can be Since the blocking member 120 exceeds the frictional force generated between it and the piping material 14, the blocking member 120 allows the wiring/piping material 14 to move relative to the refractory main body 110 in the axial direction, and also allows the wiring/piping material 14 to move along the axis. The closure member 120 is configured to remain positioned within the penetration portion 13 when moved in the direction. Therefore, the frictional resistance reduction member may be omitted.

Based on the above description, the refractory structure 10 of one embodiment of the present invention will be described in more detail with reference to FIGS. 7 and 8. FIG. FIG. 7 is a vertical cross-sectional view taken along the axial direction of the refractory structure 10 of FIG. 8A and 8B are cross-sectional views taken along lines DD and EE in FIG.

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

Also, the wiring/piping material 14 is arranged to pass through the through portion 13 so as to pass through the fireproof partition 12 . The wiring/piping member 14 axially penetrates the insertion space of the fireproof device body 110 and the insertion portion of the closing member 120 . Then, each tongue 113a of the closing portion 113 of the refractory main body 110 is bent toward one end (wall surface) in the insertion space, and each tongue 113a is brought into close contact with the outer peripheral surface of the wiring/piping member 14 due to its elastic restoring force. ing.

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

As shown in FIG. 8(a), in the cross section of the portion near one end (wall surface) of the blocking member 120, the inner peripheral portion 122 of the blocking member 120 divided by a plurality of grooves 125 extending in the radial direction corresponds to the wiring. - The outer peripheral surface shape of the piping material 14 is followed, and it deform|transforms into cross-sectional view circular shape as a whole. Radial tip portions or tip surfaces of the plurality of split pieces 126 are individually and irregularly (randomly) compressed and deformed in the circumferential direction, and adhere to the outer peripheral surface of the wiring/piping member 14 . At this time, each split piece 126 is compressed and deformed so as to be crushed radially outward as a whole, so that a part of the split piece 126 (sponge body 121) forms a groove 125 (which separates the adjacent split pieces 126 in the original shape). burying. In other words, the spaces of the grooves 125 further promote the compressive deformation of the split pieces 126 into irregular shapes. In other words, by separating adjacent split pieces 126 by grooves 125, each split piece 126 can be deformed more freely (or with less influence on each other). Then, each split piece 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 the height direction) spreads irregularly in the peripheral direction (or the width direction). , the adjacent split pieces 126 are in contact with each other without gaps in the circumferential direction. As a result, the closing member 120 closes the gap between the wiring/piping member 14 and the fireproof main body 110 without a gap.

In a cross-section at a portion near the other end (wall back) side of the blocking member 120, a plurality of tongue pieces 113a cover a part of the outer peripheral surface of the wiring/piping member 14, and the outer peripheral surface of the wiring/piping member 14 and the tongue are covered. Strips 113a are alternately exposed toward the gap. As shown in FIG. 8(b), the inner peripheral portion 122 of the closing member 120 divided by a plurality of grooves 125 extending in the radial direction has a relatively complicated structure formed by combining the wiring/piping member 14 and the tongue piece 113a. It follows the shape of the outer surface and deforms in a complicated manner as a whole. That is, the inner peripheral portion 122 of the closing member 120 deforms more randomly and fluidly than in FIG. 8(a). The radial tip portions or tip faces of the plurality of split pieces 126 are individually and irregularly (randomly) compressed and deformed in the circumferential direction, and adhere to the surfaces of the wiring/piping member 14 and the tongue piece 113a. ing. In particular, since the split pieces 126 are independent of each other in the circumferential direction via the grooves 125, the tip surfaces (inner peripheral surfaces) of the adjacent split pieces 126 deform in different shapes depending on the position in the circumferential direction. there is In addition, by compressing and deforming each split piece 126 as a whole so as to be crushed radially outward, part of the split piece 126 (sponge body 121) fills the groove 125 (which separates the adjacent split pieces 126 in the original shape). ing. In other words, the spaces of the grooves 125 further promote the compressive deformation of the split pieces 126 into irregular shapes. Then, each split piece 126 whose tip surface is in close contact with the wiring/piping member 14 and the tongue piece 113a and is compressed and deformed in the radial direction (or the height direction) spreads irregularly in the circumferential direction (or the width direction). , adjacent split 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 member 14 and the fireproof main body 110 without a gap.

Although not shown, even if the wiring/piping material 14 is bent due to curling, the split pieces 126 can be freely deformed independently of each other in the circumferential direction. , the gap between the wiring/piping material 14 and the refractory main body 110 can be closed without any gap. That is, in the fire-resistant structure 10 of the present embodiment, the inner circumferential portion 122 of the blocking member 120 divided in the circumferential direction more reliably blocks the penetrating portion 13 according to the outer surface shape of the wiring/piping member 14 .

Referring now to Figure 9, an exemplary method of constructing the refractory structure 10 of one embodiment of the present invention will now be described. First, the wiring/piping material 14 is arranged to pass through the through portion 13 of the fire prevention partition 12 . Next, the refractory 11 with the closing member 120 mounted inside the refractory 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, adhesive, putty, or the like. The refractory main body 110 and the blocking member 120 are integrally elastically deformed to open the slits 114 and 127, and the wiring/piping member 14 is inserted into the insertion portion of the blocking member 120 through the opened slits 114 and 127. do. By elastically restoring the refractory main body 110 and the closing member 120, the slit portions 114 and 127 are closed and the wiring/piping member 14 can be held in the insertion portion. Subsequently, the refractory 11 is slid along the wiring/piping material 14 to be placed in the penetration 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 fireproof device 11 is fixed to the fireproof compartment 12 with double-sided tape or the like. Since the blocking member 120 allows the wiring/piping member 14 to move relative to the fire-resistant device body 110 in the axial direction while the fire-resistant device 11 is fixed, the blocking member 120 is maintained within the penetration portion 13. In addition, it is possible to move the wiring/piping material 14 in the axial direction for laying. Through the steps described above, the fire-resistant structure 10 shown in FIG. 1 is constructed.

The method described here is merely an example, and a person 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 penetration portion 13 first, and the blocking member 120 and the wiring/piping material 14 may be inserted into the insertion space from the longitudinal direction through the opening at one end or the other end thereof. It is possible.

Hereinafter, the effects of the fire-resistant structure 10 (fire-resistant fitting 11) of one embodiment according to the present invention will be described.

According to the fire-resistant structure 10 and the fire-resistant fitting 11 of the present embodiment, the inner peripheral portion 122 of the compressively deformable closing member 120 surrounding the outer peripheral surface of the wiring/piping member 14 has a plurality of inner peripheral portions 122 in the circumferential direction. A plurality of grooves 125 are provided to divide the split pieces 126 . The groove portion 125 is formed on the surface of the inner peripheral portion 122 with a predetermined groove depth, and divides the adjacent split pieces 126 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 peripheral direction by the groove portion 125 can deform more randomly and fluidly according to the shape of the contact target. In particular, in the original shape of the blocking member 120 , the groove 125 separates the adjacent split pieces 126 so as not to contact each other, so that each split piece 126 can be deformed more freely according to the outer peripheral shape of the wiring/piping member 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 curling or other factors, the inner peripheral portion 122 of the blocking member 120 is such that each split piece 126 of the wiring/piping material 14 is relatively small. By compressing and deforming to individually follow a complicated shape, it is possible to adhere well to the outer peripheral surface of the wiring/piping member 14 in the circumferential direction. Therefore, in the fireproof structure 10 of the present invention, the closing member 120 can more reliably close the gap between the wiring/piping member 14 and the fireproof body 110 .

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

(1) FIG. 10 shows a closing member 220 of a refractory according to a second embodiment of the present invention. The blocking member 220 includes a plurality of (eight in this embodiment) grooves 225 that divide the inner circumference 222 into a plurality of split pieces 226 in the circumferential direction. Specifically, as shown in FIG. 10, each groove 225 is radially cut to a predetermined depth radially outward from the surface of the inner peripheral portion 222 of the sponge body 221 in a front view (or cross-sectional shape). It is a groove that extends continuously with the same cross-sectional shape over the entire axial direction. Further, each groove portion 225 is formed with a radial depth that does not reach the outer peripheral portion 223 of the closing member 220 . Each groove portion 225 has a V-shape in a front view having a predetermined width in the inner peripheral portion 222 . As a result, in the original shape of the closing member 220 before compression deformation, the adjacent split pieces 226 are not in contact with each other and are separated from each other by the groove portion 225 . Moreover, in this embodiment, the plurality of grooves 225 have the same shape and are arranged at regular intervals in the circumferential direction. On the other hand, although the circumferential width of each split piece 226 (arc length on the same circumference around the cylindrical axis of the split piece 226) is uniform, the radial length (the end portion of the outer peripheral surface side of the split piece 226) is uniform. to the tip surface) is uneven. That is, the radial lengths of adjacent split pieces 226 are different. Specifically, the plurality of split pieces 226 consist of a first split piece 226-1 having a relatively large radial length and a second split piece 226-2 having a relatively small radial length. The first split pieces 226-1 and the second split pieces 226-2 are alternately continuous in the circumferential direction. Also, the tip portion of the first split piece 226-1 with a smaller circumferential width is more easily deformed in the radial direction than the tip portion of the second split piece 226-2. That is, the easily deformable tall first split pieces 226-1 and the hard-to-deform short second split pieces 226-2 are alternately arranged in the circumferential direction. Since the radial lengths of the split pieces 226 are uneven in this manner, the inner peripheral portion 222 of the closing member 220 can be deformed more randomly as a whole, and the outer periphery of various wiring and piping materials can be deformed. It is possible to exhibit high adhesion to the shape.

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

(3) FIG. 12 shows a closing member 420 of a refractory according to a fourth embodiment of the present invention. The blocking member 420 includes a plurality of grooves 425 that divide an inner peripheral portion 422 into a plurality of split pieces 426 in the circumferential direction. As shown in FIG. 12, the shape of the groove is not limited to a V shape in front view. That is, the groove portion 425 is a combination of a rectangular inner portion opening on the inner peripheral side and an elongated conical outer portion. In other words, the split piece 426 has a tapered shape combining two trapezoids. The blocking member 420 having this shape is advantageously selected when the outer peripheral surface of the wiring/piping material has relatively deep fine grooves. In addition, as shown in FIG. 12(c), the blocking member 420 of the present embodiment has a sheet shape in its original shape. It transforms into the cylindrical shape shown.

(4) FIG. 13 shows a closing member 520 of a refractory according to a fifth embodiment of the present invention. The closing member 520 includes a plurality of grooves 525 that divide an inner peripheral portion 522 into a plurality of split pieces 526 in the circumferential direction. In the blocking member 520 of this embodiment, as shown in FIG. 13, the dividing piece 526 is formed as a U-shaped protrusion, and the radial depth of the groove 525 is smaller than the overall diameter. The blocking member 520 having this shape is advantageously selected when the outer peripheral surface of the wiring/piping material has many fine irregularities.

(5) FIG. 14 shows a closing member 620 for a refractory according to a sixth embodiment of the present invention. The closing member 620 includes a plurality of grooves 625 that divide the inner circumference 622 into a plurality of split pieces 626 in the circumferential direction. In the closing member 620 of the present embodiment, as shown in FIG. 14, the groove 625 is formed as a cut having no significant width in the circumferential direction. In the original shape, the adjacent split pieces 626 are in contact with each other. In the blocking member 620 having this shape, the degree of freedom of deformation of the split pieces 626 is lower than that of a groove portion having a predetermined width. It can adhere to the outer peripheral surface of the piping material. Note that the slit portion is omitted from the closing member 620 of this embodiment.

(6) FIG. 15 shows a closing member 720 for a refractory according to a seventh embodiment of the present invention. The closing member 720 includes a plurality of grooves 725 that divide an inner peripheral portion 722 into a plurality of split pieces 726 in the circumferential direction. In the blocking member 720 of the present embodiment, as shown in FIG. 15, the groove 725 extends not over the entire axial direction of the blocking member 720 but in a part of the axial direction. That is, the grooves 725 and the split pieces 726 may be formed at specific locations in the axial direction. In the blocking member 720 having this shape, the plurality of divided pieces 726 are compressed and deformed individually in the circumferential direction at the locations where the tip surfaces of the divided pieces 726 of the wiring/piping material come into contact with each other, and the outer peripheral surface of the wiring/piping material is deformed. Adhesion is possible. Note that the slit portion is omitted from the closing member 720 of this embodiment.

(7) FIG. 16 shows a closing member 820 for a refractory according to the eighth embodiment of the present invention. The closing member 820 includes a plurality of grooves (dividing portions) 825 that divide the inner circumferential portion 822 into a plurality of dividing 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, a plurality of divisional pieces 826 are divided into blocks in the circumferential direction by a groove portion 825 that cuts the wall portion of the blocking member 820 (sponge body 821) along the radial direction. As a result, the independence of each split piece 826 in compressive deformation can be further improved, and the closing property between the wiring/piping material and the fireproof device main body can be enhanced. Preferably, each block-shaped split piece 826 is fixed to the refractory main body by adhesion or the like to improve workability.

(8) FIG. 17 shows a closing member 920 for a refractory according to a ninth embodiment of the present invention. The closing member 920 includes a plurality of grooves 925 that divide an inner peripheral portion 922 into a plurality of split pieces 926 in the circumferential direction. Each groove 925 extends from the inner periphery 922 to the outer periphery 923 of the closure member 920 so as to radially cut the closure member 920, and the plurality of split pieces 926 are completely separated from each other. That is, a plurality of divisional pieces 926 are separated in a block shape in the circumferential direction by a groove portion 925 that cuts the wall portion of the blocking member 920 (sponge body 921) in the radial direction. Furthermore, the closing member 920 further includes a connecting sheet (connector) 929 that connects the adjacent divided pieces 926 among the plurality of divided pieces 926 on the outer peripheral side. The connecting sheet 929 may be selected from non-woven fabrics and the like. By connecting the divided pieces 926 separated by the connecting sheet 929 outside the outer peripheral portion 923 of the closing member 920, the independence of the divided pieces 926 in compression deformation is maintained, and the closing member 920 is easy to carry and install. becomes. Note that the connecting sheet may connect some of the plurality of divided bodies. Also, the connector may not be in the form of a sheet, and may be a piece of metal such as a staple.

(9) The closure member of the present invention can take various shapes other than the above-described shapes shown in the drawings. For example, the cross-sectional shape (eg, circumferential width or radial depth) of the groove of the closure member may vary in the axial direction. In addition, the blocking member may be formed so that part or all of the circumferential width, interval and radial depth of the groove and the circumferential width and radial length of the split pieces are irregularly formed. . Furthermore, the cross-sectional shape of the inner peripheral portion and the outer peripheral portion of the blocking member is not limited to a circular shape, and may be an arbitrary shape such as an oval, an ellipse, a polygonal shape, or a distorted shape. It can be optimally selected according to the material and the shape of the penetrating part. The occluding member may have a non-uniform shape in the axial direction, for example a tapered shape.

(10) FIG. 18 shows a cross-sectional view of a refractory 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. A fireproof tool 101 is provided between the outer peripheral surface. The refractory 101 is made of a thermally expandable material that expands due to heat, is fixed in the through portion 103, and includes a refractory main body 1010 that surrounds the outer peripheral surface of the wiring/piping material 104 with a predetermined gap, and 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 through portion 103 and the outer peripheral surface of the refractory main body 1010. and an outer frame 1030 arranged in the . In this embodiment, the refractory main body 1010 is formed as a tubular body without flanges. That is, the refractory main body 1010 includes a tubular portion 1011 and a closing portion 1013 (tongue piece 1013a). The outer frame 1030 is made of a heat-resistant metal piece, and has a cylindrical portion 1031 into which the refractory main body 1010 is inserted, and a flange portion 1032 protruding from the outer periphery of the cylindrical portion 1031 . In the present embodiment, the flange portion 1032 of the outer frame 1030 is brought into contact with the peripheral edge of the through portion 103 so that the outer frame 1030 can be easily arranged with respect to the through portion 103, and the inner portion of the through portion 103 can be It is possible to stably hold the refractory main body 1010 in the cylindrical portion 1031 of the outer frame 1030 regardless of the peripheral shape and surface condition. Needless to say, the effect of the present invention can be exhibited even in the modified example. That is, as far as those skilled in the art can imagine, the fireproof structure of the present invention can be arbitrarily modified or modified.

(11) In the closure member of the above embodiment, adjacent divided pieces among the plurality of divided pieces may have different compression ratios in terms of material. By partially changing the material density and material of the sponge body, the compressibility of adjacent split pieces can be changed. For example, split pieces may be formed from materials having different compression ratios and then integrally bonded together in the circumferential direction, or separate split pieces having different compression ratios may be arranged in the circumferential direction as shown in FIGS. , the compressibility of adjacent segments can be varied. That is, by deforming the adjacent split pieces with different compression ratios, it becomes possible to deform the inner peripheral portion of the blocking member as a whole more randomly, resulting in high adhesion to the outer peripheral shape of various wiring and piping materials. It is possible to demonstrate In particular, in the configuration of the closure member 220 of FIG. 10, the compressibility of the radially long (tall) first segment 226-1 is increased by the radially short (short) second segment 226-1. Higher than 2 is preferred. In other words, in the inner peripheral portion 222 of the blocking member 220, the first split piece 226-1 protruding inwardly more than the second split piece 226-2 is relative to the outer surface of the wiring/piping material. It is easy to strongly contact from a close distance. Therefore, by relatively increasing the compressibility (compressibility) of the first split piece 226-1, the inner peripheral portion 222 of the blocking member 220 can be brought into close contact with the wiring/piping material in a well-balanced manner as a whole. becomes.

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

(13) In the fire-resistant equipment of the one embodiment described above, the fire-resistant equipment body and the closing member have slits for arranging the wiring and piping materials inside from the radial direction. Alternatively, the closing member may be formed in a half-split shape that is divided into two along the axial direction. In this case, the wiring/piping material can be arranged inside by joining the halves so as to sandwich the wiring/piping material.

(14) The refractory main body of the present invention is not limited to the above embodiment. The cross-sectional shape of the refractory main body is not limited to an annular shape, and may be any shape such as an oval, elliptical, polygonal, or distorted shape, depending on the shape of wiring/piping materials and penetrations. can be optimally selected. Also, the refractory main body may have a shape that is not uniform in the axial direction, such as a tapered shape. Furthermore, the tongue (closure) may be omitted from the refractory body. Alternatively, the tongue piece (closing part) may be formed at a position different from the above embodiment, such as one axial end on the front side of the wall.

(15) In the fireproof structure of the above embodiment, one wiring/piping member is inserted into the fireproof fitting, but a plurality of wiring/piping members may be inserted into the fireproof fitting. When a large number of wiring and piping materials are inserted through the through-hole and arranged, the diameter of the inner circumference of the blocking member is adjusted to the diameter of each wiring and piping so that the shape of the inner circumference of the blocking member follows and deforms to the bundle of wiring and piping materials. It is preferable to make it relatively small with respect to the diameter of the material. For example, when a large amount of wiring/piping material is used, the diameter of the inner peripheral portion of the closing member may be set to be extremely small (approximately the diameter of the needle) so as to increase the amount of compression of the sponge body. On the other hand, when the wiring/piping material 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-described embodiment, the refractory main body is made of a thermally expandable material, and the closing member is made of a thermally expandable material or a non-thermally expandable material. However, the refractory body may be constructed of a non-thermally expanding flame retardant or heat resistant material such as a metal tube (see, for example, outer frame 1030 in FIG. 18), and the closure member may be constructed of a thermally expandable material.
That is, the refractory is
a refractory main body made of a non-thermally expansible flame-retardant (heat-resistant) material, fixed in the through-hole, and surrounding the outer peripheral surface of the wiring/piping material with a predetermined gap;
a thermally expansible closing member compressively deformed so as to insert the wiring/piping material and close the gap between the refractory main body and the wiring/piping material;
The blocking member includes: a plurality of grooves axially dividing an inner peripheral portion of the blocking member facing the outer peripheral surface of the wiring/piping material; and a plurality of divided pieces formed between the plurality of grooves; , wherein the plurality of split pieces are individually compressed and deformed in the axial direction and closely attached to the outer peripheral surface of the wiring/piping member.
In the refractory device of this form, as in the above-described embodiment, the inner peripheral portion of the compressively deformable closing member is provided with a plurality of grooves that divide the inner peripheral portion into a plurality of split 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 the embodiments and modifications described above may be combined and applied to fire resistant structures, fire resistant devices and closure members.

The present invention is not limited to the embodiments and modifications described above, and can be implemented in various forms within the technical scope of the present invention.

10 Fireproof structure 11 Fireproof device 12 Fireproof partition 13 Penetrating portion 14 Wiring/piping material 110 Fireproof device main body 111 Cylindrical portion 112 Flange portion 113 Closing portion 113a Tongue piece 114 Slit portion 120 Closing member 121 Sponge body 122 Inner peripheral portion 123 Outer periphery Part 124 sheet body (frictional resistance reducing member)
125 groove (radial groove)
126 split piece 127 slit portion 929 connecting sheet (connecting body)
1030 outer frame 1031 cylindrical portion 1032 flange portion

Claims (5)

A wiring/piping member is inserted through a penetration portion formed by axially penetrating a fireproof partition of a building, and is provided between an inner peripheral surface of the penetration portion and an outer peripheral surface of the wiring/piping member. A refractory that
a refractory main body that is fixed in the through portion and surrounds the outer peripheral surface of the wiring/piping material with a predetermined gap;
a compression-deformable closing member that inserts the wiring/piping material to close a gap between the refractory main body and the wiring/piping material;
At least one of the refractory main body and the closing member is made of a thermally expandable material that expands due to heat,
The blocking member has a plurality of grooves for dividing an inner peripheral portion of the blocking member facing the outer peripheral surface of the wiring/piping material into a plurality of split pieces in the circumferential direction, and the plurality of split pieces are circumferentially arranged with each other. It can be individually compressed and deformed to adhere to the outer peripheral surface of the wiring / piping material ,
A fire-resistant device, wherein the groove is formed as a cut having no significant width in the circumferential direction, and the adjacent split pieces are in contact with each other in the original shape. A wiring/piping member is inserted through a penetration portion formed by axially penetrating a fireproof partition of a building, and is provided between an inner peripheral surface of the penetration portion and an outer peripheral surface of the wiring/piping member. A refractory that
a refractory main body that is fixed in the through portion and surrounds the outer peripheral surface of the wiring/piping material with a predetermined gap;
a compression-deformable closing member that inserts the wiring/piping material to close a gap between the refractory main body and the wiring/piping material;
At least one of the refractory main body and the closing member is made of a thermally expandable material that expands due to heat,
The blocking member has a plurality of grooves for dividing an inner peripheral portion of the blocking member facing the outer peripheral surface of the wiring/piping material into a plurality of split pieces in the circumferential direction, and the plurality of split pieces are circumferentially arranged with each other. It can be individually compressed and deformed to adhere to the outer peripheral surface of the wiring / piping material,
The fire-resistant device, wherein the groove part extends in a part of the axial direction of the closing member, and the groove part and the divided pieces are formed at specific positions in the axial direction. A wiring/piping member is inserted through a penetration portion formed by axially penetrating a fireproof partition of a building, and is provided between an inner peripheral surface of the penetration portion and an outer peripheral surface of the wiring/piping member. A refractory that
a refractory main body that is fixed in the through portion and surrounds the outer peripheral surface of the wiring/piping material with a predetermined gap;
a compression-deformable closing member that inserts the wiring/piping material to close a gap between the refractory main body and the wiring/piping material;
At least one of the refractory main body and the closing member is made of a thermally expandable material that expands due to heat,
The blocking member has a plurality of grooves for dividing an inner peripheral portion of the blocking member facing the outer peripheral surface of the wiring/piping material into a plurality of split pieces in the circumferential direction, and the plurality of split pieces are circumferentially arranged with each other. It can be individually compressed and deformed to adhere to the outer peripheral surface of the wiring / piping material,
A refractory tool, wherein the radial depth of the groove varies in the axial direction. 4. The refractory according to any one of claims 1 to 3, wherein the refractory main body and the closing member are made of the same material. A wiring/piping member is inserted through a penetration portion formed by axially penetrating a fireproof partition of a building, and a fireproof device is provided between an inner peripheral surface of the penetration portion and an outer peripheral surface of the wiring/piping member. In the fireproof structure provided, a predetermined gap between a fireproof device body fixed in the penetration part so as to surround the outer peripheral surface of the wiring/piping material and the outer peripheral surface of the wiring/piping material is provided. A closing member that is compressed and deformed to close,
made of a thermally expandable material,
comprising a plurality of grooves for dividing an inner peripheral portion of the blocking member facing the outer peripheral surface of the wiring/piping material into a plurality of split pieces in the circumferential direction,
The plurality of split pieces can be compressed and deformed individually in the circumferential direction to be in close contact with the outer peripheral surface of the wiring/piping material,
The closing member, wherein the groove is formed as a cut having no significant width in the circumferential direction, and the adjacent split pieces are in contact with each other in the original shape.

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