JP7320577B2 - 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 the tongue piece of the tool body is interposed, a gap is likely to be formed at least along the axial 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 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.

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 that divide the inner peripheral portion into a plurality of split pieces in the axial 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 axial direction. As a result, the inner peripheral portion of the closing member divided in the axial 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 outer surface shape of the wiring/piping material in the axial direction is not simple due to curling or other factors, the inner peripheral portion of the blocking member is designed so that each split piece conforms to the relatively complicated shape of the wiring/piping material. By individually following and compressing and deforming, it is possible to adhere well to the outer surface of the wiring/piping material in the axial 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.

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;
At least one helical groove extending in the axial direction is formed in the inner peripheral portion of the closing member facing the outer peripheral surface of the wiring/piping member, and the groove extends over the entire inner peripheral portion of the closing member. , the inner peripheral portion of the closing member is divided in the axial direction into three or more divided pieces, and the plurality of divided pieces are individually compressed and deformed in the axial direction to the outer peripheral surface of the wiring/piping material. It is characterized by being in close contact.

According to the fireproof structure of the present invention, the inner peripheral portion of the compressively deformable closing member that surrounds the outer peripheral surface of the wiring/piping material has a spiral shape that divides the inner peripheral portion into at least three divided pieces in the axial direction. grooves are 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 axial direction. As a result, the inner peripheral portion of the closing member divided in the axial 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 outer surface shape of the wiring/piping material is not simple due to curling or other factors, the inner peripheral portion of the blocking member allows each divided piece to individually follow the relatively complicated shape of the wiring/piping material. By compressing and deforming, it is possible to adhere well to the outer peripheral surface of the wiring/piping material in the axial 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.

According to a further aspect of the present invention, in the fire resistant structure of the above aspect, the groove portion is formed with a radial depth that does not reach the outer peripheral portion of the closing member, and the plurality of divided pieces are arranged on the outer peripheral portion of the closing member. It is characterized by being connected at the part. That is, since the groove does not completely cut the wall of the blocking member and the plurality of split pieces are connected at the outer peripheral portion of the blocking member, the wiring/piping material can be adhered to the outer peripheral surface while ensuring the adhesion. It becomes easy to carry and install the closing member.

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 groove portion 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 is adjacent to the closing member. The divided pieces are separated at the outer peripheral portion of the closing member, and the divided pieces adjacent to each other in the gap are deformed and brought into close contact with each other. That is, the adjacent split pieces are axially separated into blocks by a groove portion that axially or helically cuts the wall portion of the blocking member, thereby further improving the independence of each split piece in compressive deformation. Therefore, it is possible to improve the sealing property between the wiring/piping material and the fireproof main 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.

A fire resistant structure according to a further aspect of the present invention is the fire resistant structure according to the aspect described above, wherein the closing member is further formed with a plurality of vertical grooves that divide the inner peripheral portion in the circumferential direction into a plurality of pieces, and the diameters of the divided pieces are The direction inner end surface is divided into a plurality of parts in the circumferential direction. That is, the longitudinal grooves are formed on the inner peripheral surface with a predetermined groove depth, and divide the divided pieces so that they can be individually and freely deformed in the circumferential direction. Therefore, the radial inner end face of each split piece is subdivided in the circumferential direction. As a result, the inner peripheral portion of the closing member divided in the circumferential direction by the vertical groove portion can be deformed more randomly and fluidly according to the outer peripheral shape of the object with which it abuts in the circumferential 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 longitudinal grooves are displaced in the circumferential direction in axially adjacent split pieces among the plurality of split pieces. . Since the circumferential positions of the longitudinal grooves are different between the split pieces, the split pieces are compressed and deformed more irregularly. As a result, the inner peripheral portion of the closing member can deform more randomly and fluidly according to the shape of the object to be contacted.

A fire resistant structure of a further aspect of the present invention is the fire resistant structure of the above aspect, wherein in the original shape of the closing member before compressive deformation, the divided bodies adjacent across the groove are separated without coming into contact with each other, and the gap , wherein the divided body that is compressed and deformed occupies each of the grooves. That is, the groove separating the adjacent split pieces guides the axial deformation of the split body when the closing member as a whole is compressed and deformed, and promotes the freer deformation of the split body.

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 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.

According to the refractory 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 that divide the inner peripheral portion into a plurality of split pieces in the axial 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 axial direction. As a result, the inner peripheral portion of the closing member divided in the axial 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 outer peripheral shape of the wiring/piping material is not simple due to curling or other factors, the inner peripheral portion of the blocking member is such that each split piece individually follows the relatively complicated shape of the wiring/piping material. By compressing and deforming, it is possible to adhere well to the outer surface of the wiring/piping material in the axial 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.

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;
At least one helical groove extending in the axial direction is formed in the inner peripheral portion of the closing member facing the outer peripheral surface of the wiring/piping member, and the groove extends over the entire inner peripheral portion of the closing member. , the inner peripheral portion of the closing member is divided in the axial direction into three or more divided pieces, and the plurality of divided pieces are individually compressed and deformed in the axial direction to the outer peripheral surface of the wiring/piping material. It is characterized by being in close contact.

According to the refractory tool 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 spiral shape that divides the inner peripheral portion into at least three divided pieces in the axial direction. grooves are 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 axial direction. As a result, the inner peripheral portion of the closing member divided in the axial 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 outer surface shape of the wiring/piping material is not simple due to curling or other factors, the inner peripheral portion of the blocking member allows each divided piece to individually follow the relatively complicated shape of the wiring/piping material. By compressing and deforming, it is possible to adhere well to the outer surface of the wiring/piping material in the axial 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 refractory of the above aspect, the groove portion is formed with a radial depth that does not reach the outer peripheral portion of the closing member, and the adjacent divided pieces are formed to have a radial depth that does not reach the outer peripheral portion of the closing member. It is characterized by being connected at the part. That is, since the groove does not completely cut the wall of the blocking member and the plurality of split pieces are connected at the outer peripheral portion of the blocking member, the wiring/piping material can be adhered to the outer peripheral surface while ensuring the adhesion. It becomes easy to carry and install the closing member.

According to a further aspect of the present invention, in the refractory tool of the one aspect described above, the groove portion 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 is adjacent to the closing member. It is characterized in that the divided pieces are separated at the outer peripheral portion of the closing member. That is, the adjacent split pieces are axially separated into blocks by a groove portion that axially or helically cuts the wall portion of the blocking member, thereby further improving the independence of each split piece in compressive deformation. Therefore, it is possible to improve the sealing property between the wiring/piping material and the fireproof main 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 according to the above aspect, the axial widths of the plurality of split pieces are non-uniform. That is, since the axial widths of the plurality of 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 and 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 fitting of the one aspect described above, the inner peripheral portion of each of the divided pieces is attached between the inner peripheral portion of the closing member and the outer peripheral surface of the wiring/piping member. A frictional resistance reducing member comprising a plurality of attached sheet members is interposed. 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. Furthermore, since the frictional resistance reduction member is composed of a plurality of sheet bodies adhered to the radially inner end surfaces of the respective split pieces, the frictional resistance between the radially inner end surfaces of the respective split pieces and the wiring/piping materials can be effectively reduced. can be mitigated.

According to a further aspect of the present invention, in the refractory of the above aspect, the closing member is further formed with a plurality of longitudinal grooves that divide the inner peripheral portion into a plurality of pieces in the circumferential direction, and the diameter of the divided piece is The direction inner end surface is divided into a plurality of parts in the circumferential direction. That is, the longitudinal grooves are formed on the inner peripheral surface with a predetermined groove depth, and divide the divided pieces so that they can be individually and freely deformed in the circumferential direction. Therefore, the radial inner end face of each split piece is subdivided in the circumferential direction. As a result, the inner peripheral portion of the closing member divided in the circumferential direction by the vertical groove portion can be deformed more randomly and fluidly according to the outer peripheral shape of the object with which it abuts in the circumferential direction.

According to a further aspect of the present invention, in the refractory tool of the one aspect described above, the longitudinal grooves are displaced in the circumferential direction in axially adjacent split pieces among the plurality of split pieces. . Since the circumferential positions of the longitudinal grooves are different between the split pieces, the split pieces are compressed and deformed more irregularly. As a result, the inner peripheral portion of the closing member can deform more randomly and fluidly according to the shape of the object to be contacted.

According to a further aspect of the present invention, in the refractory tool of the above aspect, in the original shape of the closing member before compressive deformation, the divided bodies adjacent to each other across the groove part are separated without coming into contact with each other, and the gap , wherein the divided body that is compressed and deformed can occupy the groove. That is, the groove separating the adjacent split pieces guides the axial deformation of the split body when the closing member as a whole is compressed and deformed, and promotes the freer deformation of the split body.

According to a further aspect of the present invention, in the above aspect of the fire-resistant tool, axially 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

According to a further aspect of the present invention, in the refractory tool of the one aspect described above, the plurality of split pieces include a first split piece and a second split piece, and the thickness of the first split piece is greater than the radial thickness of the first split piece. It is characterized in that the radial thickness of the two split pieces is small and the compressibility of the second split piece is higher than the compressibility of the first split piece. That is, by compressing and deforming the first divided piece, which is larger among the plurality of divided pieces, more than the second divided piece, it is possible to deform the inner peripheral portion of the closing member more randomly as a whole, and various It is possible to exhibit high adhesion to the outer peripheral shape of the wiring/piping material.

According to a further aspect of the present invention, in the fire-resistant tool of the one aspect described above, the divided pieces are formed in three or more in the axial direction of the inner peripheral portion of the closing member. That is, as the number of split pieces laminated in the axial direction is increased, it becomes possible to effectively block finer irregularities in the axial direction of the wiring/piping material.

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.

A further aspect of the present invention is a refractory in accordance with the above-described aspect, wherein the refractory main body or the closing member forms an opening for arranging the wiring/piping member inside from the radial direction. 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,
Consists of an annular compression-deformable sponge body having an inner peripheral portion and an outer peripheral portion,
a plurality of grooves dividing the inner peripheral portion of the closing member facing the outer peripheral surface of the wiring/piping member into a plurality of split pieces in the axial direction;
It is characterized in that the plurality of split pieces can be compressed and deformed individually in the axial direction so as to be in close contact with 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 axial 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 axial direction. As a result, the inner peripheral portion of the closing member divided in the axial 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 outer surface shape of the wiring/piping material is not simple due to curling or other factors, the inner peripheral portion of the blocking member allows each divided piece to individually follow the relatively complicated shape of the wiring/piping material. By compressing and deforming, it is possible to adhere well to the outer surface of the wiring/piping material in the axial 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. FIG. 2 is a schematic diagram showing one step of constructing the refractory structure of FIG. 1; (a) Perspective view, (b) front view and (c) DD cross-sectional view of a closure member according to another embodiment of the present invention. FIG. 10 is a schematic cross-sectional view of a fire resistant structure using the closure member of FIG. 9; (a) EE cross-sectional view and (b) FF cross-sectional view of the fire resistant structure of FIG. (a) a perspective view, (b) a front view, and (c) a GG cross-sectional view of a closure member according to 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. The schematic exploded perspective view of the closure member of another embodiment of this invention. FIG. 15 is a vertical cross-sectional view of the closure member of FIG. 14; (a) HH cross-sectional view, (b) II cross-sectional view, and (c) JJ cross-sectional view of the closing member of FIG. (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. The schematic exploded perspective view of the closure member of another embodiment of this invention. (a) Front view and (b) KK cross-sectional view of the closing member of FIG. The schematic exploded perspective view of the closure member of another embodiment of this invention. (a) Front view and (b) LL cross-sectional view of the closing member of FIG. 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 has a plurality of grooves (two in this embodiment) that are recessed along the circumferential direction on the surface of the inner peripheral portion 122 and divide the inner peripheral portion 122 into a plurality of split pieces 126 in the axial direction. 125. Specifically, as shown in FIGS. 5 and 6, each groove portion 125 is a groove cut on the surface of the inner peripheral portion 122 of the sponge body 121 over the entire circumferential direction, and is formed on a plane orthogonal to the axial direction. extended. 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 this embodiment, each groove portion 125 has a V-shape in front view having a predetermined width in the inner peripheral portion 122 in the axial direction. 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 axial deformation of the split pieces 126 when the entire closure member 120 is compressed and deformed. 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. 7). reference). Further, in this embodiment, the plurality of grooves 125 have the same shape and equally divide the sponge body 121 in the axial direction. The axial width of each split piece 126 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). The slit portion 127 axially divides the wall portion between the inner peripheral portion 122 and the outer peripheral portion 123 along the entire axial direction so as to be perpendicular to the groove portion 125 . 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.

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 . In this embodiment, the wiring/piping material 14 has a curl and is slightly bent in the axial direction. 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 substantially close the gap between the wiring/piping member 14 and the refractory main body 110 in the axial direction (longitudinal direction). 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 . Generally, in such a structure, a gap is likely to be formed due to the bending of the wiring/piping member 14 and the step between the tongue piece 113a and the outer peripheral surface of the wiring/piping member 14 . On the other hand, in the present fire-resistant structure 10, the inner peripheral portion 122 of the blocking member 120 divided in the axial direction by the plurality of grooves 125 is the outer surface shape (the curved shape and the tongue 115a) of the wiring/piping member 14 in the axial direction. It is compressed and deformed as a whole following the step). Then, the radial inner end surfaces (tip portions) of the plurality of split pieces 126 are individually and irregularly (randomly) compressed and deformed in the axial direction to form wiring/piping members along the axial (longitudinal) direction. It adheres to the outer surface of 14. As a result, the closing member 120 closes the gap between the wiring/piping member 14 and the refractory main body 110 without gap in the axial direction.

Referring now to Figure 8, 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 material is provided with a plurality of axially extending inner peripheral portions 122. A plurality of grooves 125 are provided to divide into 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 axial direction. As a result, the inner peripheral portion 122 of the closing member 120 divided in the axial 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 that they do not come into contact with each other. It can be freely deformed in the axial direction. That is, even if the outer surface shape 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 formed so that each split piece 126 of the wiring/piping material 14 is relatively complicated. By individually following the shape and compressively deforming, it is possible to adhere well to the outer surface of the wiring/piping member 14 in the axial 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) FIGS. 9 to 11 show a fire resistant structure 20, a fire resistant device 21 and a closing member 220 according to a second embodiment of the present invention. In addition, the structure of the fireproof main body 210 is common to the fireproof main body 110 of 1st Embodiment. As shown in FIG. 9, the closing member 220 includes a plurality of (two in this embodiment) grooves 225 that divide the inner circumference 222 into a plurality of split pieces 226 in the axial direction. More specifically, each groove portion 225 is a groove formed on the surface of the inner peripheral portion 222 of the sponge body 221 over the entire circumferential direction, and extends on a plane orthogonal to the 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 . That is, a plurality of split pieces 226 are connected at the outer peripheral portion 223 of the closing member 220 . In other words, the meat portion left between the tip of the groove portion 225 and the outer peripheral portion 223 connects the adjacent split pieces 226 together. Each groove 225 is a cut that partially cuts the sponge body 221 at a predetermined radial depth, and is divided so that adjacent divided pieces 226 substantially abut each other in the original shape of the closing member 220 before compression deformation. are doing. Further, in this embodiment, the plurality of grooves 225 have the same shape and equally divide the sponge body 221 in the axial direction. The axial width of each split piece 226 is uniform. In the blocking member 220 having this shape, the degree of freedom of deformation of the split pieces 226 is lower than that of a groove portion having a predetermined width. It can adhere to the outer surface of the piping material.

Furthermore, the blocking member 220 shown in FIG. 9 is further formed with a plurality of (eight in this embodiment) vertical grooves 228 that divide the inner peripheral portion 222 into a plurality of pieces in the circumferential direction. is circumferentially divided into a plurality of strips 226a. Specifically, each vertical groove portion 228 is a groove radially cut to a predetermined depth radially outward from the surface of the inner peripheral portion 222 of the sponge body 221 when viewed from the front (or in a cross-sectional shape). It extends continuously with the same cross-sectional shape or circumferential width. Further, each vertical groove portion 228 is formed with a radial depth that does not reach the outer peripheral portion 223 of the closing member 220 . Each longitudinal groove 228 partially cuts the sponge body 221 at a predetermined radial depth, and in the original shape of the closure member 220 before compressive deformation, circumferentially adjacent strips 226a within each split piece 226 are formed. The split piece 226 is split so that the . That is, since the plurality of strips 226a formed on the radially inner end surface of each split piece 226 can be individually compressed and deformed in the circumferential direction, the inner peripheral portion 222 of the closing member 220 can accommodate the wiring in the circumferential direction.・It is possible to more reliably adhere to the complicated outer shape of the piping material.

Next, the fireproof structure 20 in which the penetrating portion 23 of the fireproof partition 22 is fireproofed with the fireproof fitting 21 of the present embodiment will be described. 10 is a vertical sectional view of the fire resistant structure 20, and FIGS. 11(a) and 11(b) are EE sectional views and FF sectional views of the fire resistant structure 20. FIG.

As shown in FIG. 10, the closing member 220 is elastically compressed and deformed from its original shape to substantially eliminate the gap between the wiring/piping member 24 and the refractory main body 210 in the axial direction (longitudinal direction). is blocked. As shown in FIG. 10, the inner peripheral portion 222 is in close contact only with the outer peripheral surface of the wiring/piping member 24 (via the sheet body 124) at the one end (wall surface) side portion and the central portion of the closing member 220. . On the other hand, the inner peripheral portion 222 is in close contact with both the outer peripheral surface of the wiring/piping member 24 and the surface of the tongue piece 213a at the other end (back wall) side portion of the blocking member 220 . In the present fireproof structure 20, the inner peripheral portion 222 of the blocking member 220 divided in the axial direction by the plurality of grooves 225 follows the axial outer surface shape of the wiring/piping member 24 (the curved shape and the step due to the tongue piece 215a). It is compressed and deformed as a whole. As a result, the closing member 220 closes the gap between the wiring/piping member 24 and the fireproof main body 210 without any gap in the axial direction.

As shown in FIG. 11(a), the cross-section at a portion near one end (wall surface) of the blocking member 220 is divided by a plurality (six in this embodiment) of longitudinal grooves 228 extending in the radial direction. The inner peripheral portion 222 of is deformed into a circular shape in a cross-sectional view as a whole following the shape of the outer peripheral surface of the wiring/piping member 24 . The strips 226 a on the radially inner end surface of the split strip 226 are individually and irregularly (randomly) compressed and deformed in the circumferential direction, and are in close contact with the outer peripheral surface of the wiring/piping member 24 . That is, each strip 226a whose tip surface (inner peripheral surface) is in close contact with the wiring/piping material 24 and is compressed and deformed in the radial direction (or the height direction) is individually and irregularly deformed in the circumferential direction (or the width direction). , the adjacent split pieces 226 are in contact with each other without gaps in the circumferential direction. As a result, the closing member 220 closes the gap between the wiring/piping material 24 and the fireproof main body 210 without any gap.

In a cross-section at a portion near the other end (wall back) side of the blocking member 220, a plurality of tongue pieces 213a cover a part of the outer peripheral surface of the wiring/piping member 24, and the outer peripheral surface of the wiring/piping member 24 and the tongue are covered. Strips 213a are alternately exposed toward the gap. As shown in FIG. 11(b), the inner peripheral portion 222 of the blocking member 220 divided by a plurality of longitudinal grooves 228 extending in the radial direction has a relatively complicated structure in which the wiring/piping member 24 and the tongue 213a are combined. As a whole, it deforms in a complicated manner following the outer surface shape. That is, the inner peripheral portion 222 of the closing member 220 deforms more randomly and fluidly than in FIG. 11(a). The strips 226a on the radially inner end surface of the split strip 226 are individually and irregularly (randomly) compressed and deformed in the circumferential direction to adhere to the surfaces of the wiring/piping member 24 and the tongue 213a. . Then, each strip 226a whose tip surface (inner peripheral surface) is in close contact with the wiring/piping member 24 and the tongue piece 213a and is compressed and deformed in the radial direction (or the height direction) is individually arranged in the circumferential direction (or the width direction). Adjacent strips 226a are in contact with each other without gaps in the circumferential direction by deforming randomly and irregularly. As a result, the closing member 220 closes the gap between the wiring/piping material 24 and the fireproof main body 210 without any gap. In addition, in this embodiment, the slit portion 227 communicates with a vertical groove portion 228 that divides the inner peripheral portion 222 in the circumferential direction.

In addition to the effect of 1st Embodiment mentioned above, in this embodiment, there can exist the following effects. That is, according to the fire-resistant structure 20 and the fire-resistant fitting 21 of the present embodiment, the inner peripheral portion 222 of the compressively deformable closing member 220 surrounding the outer peripheral surface of the wiring/piping member 24 has the inner peripheral portion 222 extending in the circumferential direction. A plurality of longitudinal grooves 228 are provided which divide into a plurality of strips 226a at. A plurality of longitudinal grooves 228 are formed on the surface of the inner peripheral portion 222 with a predetermined groove depth, and the strips 226a of the split pieces 226 can individually and freely deform in the circumferential direction. As a result, the inner peripheral portion 222 of the closing member 220 divided in the peripheral direction by the vertical groove portion 228 can deform more randomly and fluidly according to the shape of the contact target. That is, even if the shape of the outer peripheral surface of the wiring/piping material 24 is not simple due to curling or other factors, the inner peripheral portion 222 of the blocking member 220 is such that the radial inner end surfaces of the split pieces 226 are arranged so as to be By individually following the relatively complicated shape of the material 24 and compressing and deforming, it is possible to adhere well to the outer peripheral surface of the wiring/piping material 24 not only in the axial direction but also in the circumferential direction. Therefore, in the fireproof structure 20 of the present invention, the closing member 220 can more reliably close the gap between the wiring/piping member 24 and the fireproof main body 210 .

In addition, in the blocking member of this embodiment, the longitudinal groove has a predetermined width in the circumferential direction in the inner peripheral portion, and the strips adjacent to each other in the original shape before compressive deformation of the blocking member are not brought into contact with each other. You can separate them. For example, the flutes may have a V-shape when viewed from the front. The longitudinal grooves separating adjacent strips guide the circumferential expansion of each segment upon radial compression. When each split piece is elastically compressed and deformed, a part of the split piece (strip) is deformed so as to occupy the groove, so that the adjacent split pieces contact each other without any gap. Further, in the closure member of the present embodiment, the longitudinal grooves may be shifted in the circumferential direction in the axially adjacent divided pieces among the plurality of divided pieces.

(2) FIG. 12 shows a closing member 320 of a refractory according to a third embodiment of the present invention. The blocking member 320 includes a single groove 325 that is recessed in the inner peripheral portion 322 and extends spirally about the central axis. The groove portion 325 extends along the inner peripheral portion 322 of the closing member 320 by three or more (this embodiment 4) is divided into divided pieces 326 . In other words, the spiral of the groove portion 325 has three or more turns in the entire axial direction of the closing member 320 . The sponge body 321 (each divided piece 326) is integrally connected in the circumferential direction or spirally, but in a cross-sectional view along the axial direction, the spiral groove 325 divides the sponge body 321 into a plurality of regions. Therefore, each region of the inner peripheral portion 322 divided by the groove portion 325 is defined as a division piece 326 here. Further, the groove portion 325 is formed with a radial depth that does not reach the outer peripheral portion 323 of the closing member 320 . That is, a plurality of split pieces 326 are connected at the outer peripheral portion 323 of the closing member 320 . In other words, the meat portion left between the tip of the groove portion 325 and the outer peripheral portion 323 connects the adjacent split pieces 326 to each other. The groove portion 325 is a cut that partially cuts the sponge body 321 with a predetermined radial depth, and divides the blocking member 320 so that the adjacent divided pieces 326 substantially abut each other in the original shape of the closing member 320 before compressive deformation. ing. In addition, in this embodiment, the slit portion is selectively omitted from the closing member.

In the closing member 320 of this embodiment, the grooves 325 are formed on the surface of the inner peripheral portion 322 with a predetermined groove depth, and the adjacent split pieces 326 are divided so as to be individually and freely deformable in the axial direction. are doing. As a result, the inner peripheral portion 322 of the closing member 320 divided in the axial direction by the groove portion 325 can be deformed more randomly and fluidly according to the shape of the contact target. That is, even if the outer surface shape of the wiring/piping material is not simple due to curling or other factors, the inner peripheral portion 322 of the blocking member 320 is designed so that each split piece 326 can conform to the relatively complicated shape of the wiring/piping material. By individually following and compressing and deforming, it is possible to adhere well to the outer surface of the wiring/piping material in the axial direction.

In this embodiment, the groove reaches from the inner peripheral portion to the outer peripheral portion of the blocking member so as to cut the blocking member in the radial direction, and the adjacent divided pieces are separated at the outer peripheral portion of the blocking member. may Also, the helical groove portion may be multi-streak. Furthermore, the helical groove may have a predetermined width in the inner peripheral portion so that the adjacent split pieces in the original shape of the closing member before compressive deformation may be separated from each other without being in contact with each other. For example, the groove may have a V shape when viewed from the front. The groove separating adjacent segments guides the axial expansion of each segment so that a portion of the segment occupies the groove when the sponge body is compressed and deformed.

(3) FIG. 13 shows the closing member 420 of the fireproof device 41 in the fireproof structure 40 of the fourth embodiment of the present invention. In the refractory structure 40, the wiring/piping material 44 is a flexible tube in which crests and troughs are alternately continuous in the axial direction. In this embodiment, the blocking member 420 has more grooves 425 and segmented pieces 426, and the axial widths of the plurality of segmented pieces 426 are uneven. Specifically, the axial width of the split piece 426 near the center in the axial direction is relatively smaller than the width at both ends. Note that the split piece 426 having a smaller axial width is more likely to be compressed and deformed. In this way, the axial widths of the plurality of split pieces 426 are uneven, so that the inner peripheral portion 422 of the closing member 420 as a whole can be deformed more randomly. When the wiring/piping member 44 has many irregularities on the outer surface in the axial direction as in the present embodiment, it is more effective to provide more grooves 425 in the inner peripheral portion 422 of the closing member 420. Gaps can be closed.

(4) FIGS. 14 to 16 show a closing member 520 for a refractory according to a fifth embodiment of the present invention. FIG. 14 is an exploded perspective view of closure member 520 showing a plurality of split pieces 526 separated. FIG. 15 is a vertical cross-sectional view of a closing member 520 in which a plurality of split pieces 526 are laminated in the axial direction. FIG. 16 is a cross-sectional view of closure member 520 . 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 axial direction. Each groove portion 525 extends from the inner peripheral portion 522 to the outer peripheral portion 523 so as to cut or divide the sponge body 521 in the axial direction, and a plurality of divided pieces 526 are completely separated from each other. That is, a plurality of divided pieces 526 are axially separated into blocks by a groove 525 that cuts the wall of the blocking member 520 (sponge body 521) along an orthogonal plane (horizontal plane) in the axial direction. As a result, the independence in compressive deformation of each split piece 526 can be further improved, and the blockage between the wiring/piping material and the refractory main body in the axial direction can be enhanced.

In addition, the blocking member 520 of the present embodiment is further formed with a plurality of longitudinal grooves 528 that divide the inner peripheral portion 522 into a plurality of pieces in the circumferential direction, and the radial inner end surface of the divided piece 526 is divided into a plurality of strips in the circumferential direction. 526a. Specifically, each longitudinal groove 528 is a groove radially cut to a predetermined depth radially outward from the surface of the inner peripheral portion 522 of the sponge body 521 in a front view (or cross-sectional shape). Each vertical groove portion 528 partially cuts the sponge body 521 at a predetermined radial depth, and in the original shape of the closing member 520 before compression deformation, each vertical groove portion 528 is a narrow portion adjacent to each divided piece 526 in the circumferential direction. The pieces 526a are split so that they substantially abut. In addition, the vertical groove may have a predetermined width in the circumferential direction on the inner peripheral portion, and the strips adjacent to each other may be separated from each other without being in contact with each other in the original shape of the closing member before compression deformation.

Each vertical groove portion 528 is formed along the axial direction of the radial inner end surface of each split piece 526 and is formed with a radial depth that does not reach the outer peripheral portion 523 of the closing member 520 . The longitudinal grooves 528 of the split pieces 526 adjacent in the axial direction among the plurality of split pieces 526 are displaced in the circumferential direction. That is, as shown in FIGS. 15 and 16, the three split pieces 526 are stacked in the axial direction so that the slit portions 527 (also serving as the longitudinal groove portions 528) are at the same position in the circumferential direction. However, the positions of the other longitudinal grooves 528 in the circumferential direction are all different. That is, a plurality of strips 526a formed on the radially inner end face of each split piece 526 can be individually compressed and deformed in the circumferential direction, and the longitudinal grooves 528 of the split pieces 526 adjacent in the axial direction can also be deformed. Since the mode of deformation changes depending on the position due to the displacement, the inner peripheral portion 522 of the closing member 520 as a whole can be elastically deformed more randomly. As a result, the inner peripheral portion 522 of the closing member 520 can more reliably adhere to the complicated outer surface shape of the wiring/piping material in the axial direction and the circumferential direction.

(5) FIG. 17 shows a closing member 620 for a refractory according to a sixth embodiment of the present invention. The blocking member 620 includes a plurality of grooves (dividing portions) 625 that divide an inner circumferential portion 622 into a plurality of dividing pieces 626 in the axial direction. Each groove portion 625 extends from the inner peripheral portion 622 to the outer peripheral portion 623 so as to radially cut the blocking member 620, and the plurality of split pieces 626 are completely separated from each other. That is, a plurality of divided pieces 626 are axially separated into blocks by grooves 625 radially cutting the wall of the blocking member 620 (sponge body 621). A plurality of sheet bodies 624 finely divided by grooves 625 and vertical grooves 628 are adhered to the surface of the inner peripheral portion 622 . Furthermore, the closing member 620 further includes a connecting sheet (connector) 629 that connects the adjacent divided pieces 626 among the plurality of divided pieces 626 on the outer peripheral side. The connecting sheet 629 may be selected from non-woven fabrics and the like. By connecting the divided pieces 626 separated by the connecting sheet 629 outside the outer peripheral portion 623, the independence of the divided pieces 626 is maintained and the closing member 620 is easy to carry and install. 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.

(6) FIG. 18 shows a closing member 720 for a refractory according to a seventh embodiment of the present invention. In addition to the closure member 620 of the sixth embodiment, the closure member 720 of FIG. 18 is obtained by completely cutting the dividing piece 726 in the circumferential direction with the vertical groove portion 728 . That is, the closing member 720 may be integrally held by the connecting sheet (connecting body) 729 in a more finely blocked state in both the circumferential direction and the radial direction.

(7) FIGS. 19 and 20 show a closing member 820 of a refractory according to an eighth embodiment of the present invention. The blocking member 820 of the present embodiment, like the fifth blocking member 520 , comprises a plurality of split pieces 826 that are axially separated into blocks by grooves 825 . The closing member 820 includes a plurality of grooves 825 that divide an inner peripheral portion 822 into a plurality of split pieces 826 in the axial 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 axial direction, and the plurality of divided pieces 826 are completely separated from each other. That is, in the inner peripheral portion 822 of the closing member 820, the axial inner end surfaces of the split pieces 826 individually follow the shape of the outer surface of the wiring/piping material and are compressed and deformed so as to be in good contact with the outer surface of the wiring/piping material. Is possible. In particular, in this embodiment, the adjacent split pieces 826 have different radial thicknesses (radial distance between the inner peripheral portion 822 and the outer peripheral portion 823). That is, the split pieces 826 consist of a first split piece 826-1 having a relatively large radial thickness (a diameter of the central hole is small) and a second split piece 826-2 having a relatively small radial thickness adjacent thereto. , and a third split piece 826-3 having an intermediate thickness. When the split pieces 826-1, 826-2, and 826-3 are stacked in the axial direction, a step occurs in the inner peripheral portion 822 of the closing member 820 in the axial direction. Therefore, for example, when the wiring/piping material has a complicated outer surface shape, such as when the thickness of the wiring/piping material is not uniform in the axial direction (longitudinal direction), the inner peripheral portion 822 of the closing member 820 is entirely covered. Since the closing member 820 has a more complicated surface shape, the closing member 820 can more effectively close the gap between the wiring/piping material and the refractory body.

(8) FIGS. 21 and 22 show a closing member 920 for a refractory according to a ninth embodiment of the present invention. The blocking member 920 of the present embodiment, like the fifth blocking member 520 , comprises a plurality of split pieces 926 that are axially separated into blocks by grooves 925 . 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 axial direction. Each groove portion 925 extends from the inner peripheral portion 922 to the outer peripheral portion 923 so as to cut or divide the sponge body 921 in the axial direction, and the plurality of divided pieces 926 are completely separated from each other. In the inner peripheral portion 922 of the blocking member 920, the axial inner end surfaces of the divided pieces 926 are compressed and deformed individually following the outer surface shape of the wiring/piping material, and can be tightly adhered to the outer surface of the wiring/piping material. It is possible. In particular, the split piece 926 is an annular body having a hole (insertion portion) that has a distorted shape in plan view. As shown in FIGS. 21 and 22, when a plurality of split pieces 926 are stacked in the axial direction, the distorted holes do not align with each other. Irregular unevenness is formed on the surface. Therefore, since the inner peripheral portion 922 of the blocking member 920 has a complicated and irregular surface shape as a whole, the blocking member 920 can be used as a wiring/piping material and a fireproof material for a wiring/piping material with a more complicated outer surface shape. It is possible to more effectively block the gap between the tool body.

(9) In the blocking member of the present invention, 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 selected optimally according to the wiring/piping material and the configuration of the through portion. In addition, the closure member of the present invention can take various shapes other than the above illustrated shapes. For example, the blocking member is formed so that part or all of the axial width, spacing and radial depth of the grooves, and the axial width and radial length (thickness) of the split pieces are irregularly formed. may Further, the groove may be formed on a surface that is inclined with respect to the axial direction. Furthermore, the closure member may have a non-uniform shape in the axial direction, for example a tapered shape.

(10) FIG. 23 shows a cross-sectional view of a fire-resistant 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, the inner peripheral surface of the penetrating 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 of materials having different compressibility and then the split pieces may be integrally axially adhered, or separate split pieces having different compressibility may be formed in the form of FIGS. By laminating in the axial direction as shown in the above, the compressibility of adjacent split pieces can be changed. 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 surface shape of various wiring and piping materials. It is possible to demonstrate In particular, in the closing member 820 of FIG. 19, it is preferable to make the compressibility of the split piece 826 having a relatively large radial thickness higher than that of the split piece 826 having a relatively thin thickness. For example, in the inner peripheral portion 822 of the blocking member 820, the first split piece 826-1 protruding inwardly than the second split piece 826-2 is relatively close to the outer surface of the wiring/piping material. Strong and easy to hit from a distance. Therefore, by relatively increasing the compressibility (ease of compression) of the first split piece 826-1, the inner peripheral portion 822 of the blocking member 820 can be brought into close contact with the wiring/piping material in a well-balanced manner as a whole. Become. Similarly, in each segment, the compressibility of the strips divided by the longitudinal grooves in the circumferential direction may be varied.

(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. Further, the main body of the refractory may be made of a non-thermally expandable material, and the closing member may be made of a thermally expandable material.

(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 portion) 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 expansive flame-retardant or heat-resistant material such as a metal tube (see, for example, outer frame 1030 in FIG. 23), 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 compression-deformable, thermally expansible closing member that inserts the wiring/piping material and closes 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.
Alternatively, the groove portion is formed in at least one helical shape extending in the axial direction, and the groove portion extends three or more axially along the inner peripheral portion of the closing member at all locations on the inner peripheral portion of the closing member. It may be divided into split pieces, and the plurality of split pieces may be compressed and deformed individually in the axial direction to closely adhere 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 axial 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 126 Split piece 127 Slits 228, 528, 628, 728 Vertical grooves 629, 729 Connection sheet (connection)
1030 outer frame 1031 cylindrical portion 1032 flange portion

Claims (3)

A fire-resistant device in which a wiring/piping member is inserted through a penetrating portion formed by penetrating a fireproof partition of a building, and is provided between an inner peripheral surface of the penetrating portion and an outer peripheral surface of the wiring/piping member. and
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 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 can be compressed and deformed individually in the axial direction so as to be in close contact with the outer peripheral surface of the wiring/piping material, and each of the grooves is, in the original shape before compressive deformation, in the axial direction A refractory device, characterized in that the closure member is divided such that the division pieces adjacent to the refractory member substantially abut against each other . A fire-resistant device in which a wiring/piping member is inserted through a penetrating portion formed by penetrating a fireproof partition of a building, and is provided between an inner peripheral surface of the penetrating portion and an outer peripheral surface of the wiring/piping member. and
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 includes a plurality of grooves that divide an inner peripheral portion of the blocking member facing the outer peripheral surface of the wiring/piping member only in the axial direction, and a plurality of divided pieces formed between the plurality of grooves. , wherein the plurality of divided pieces are compressed and deformed individually in the axial direction to adhere closely to the outer peripheral surface of the wiring/piping member. 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,
a plurality of grooves dividing the inner peripheral portion of the closing member facing the outer peripheral surface of the wiring/piping member into a plurality of split pieces in the axial direction;
The plurality of split pieces can be compressed and deformed individually in the axial direction to be in close contact with the outer peripheral surface of the wiring/piping material,
A closure member, wherein said groove is formed as a cut having no significant width in the axial direction, and in the original shape, adjacent split pieces abut against each other.

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