JP2018201764A - Fire-proof member, fire-preventive structure, and construction method of fire-preventive structure - Google Patents

Abstract

To provide a fire-proof member and the like which provides a good operability and good fire-proof performance.SOLUTION: A heat-expansive member storing part 17 is formed inside a body part 3. The heat-expansive member storing part 17 has an inner diameter which is slightly larger than other parts of an inner peripheral face of the body part 3, and is formed along a whole periphery of an inner face of the body part 3. A heat-expansive member 5 which expands by heat of a fire disaster and the like and a metal member 2 are stored in the heat-expansive member storing part 17. The metal member 2 is, for example, made of an aluminum. The metal member 2 is provided between the body part 3 (the heat-expansive member storing part 17) and the heat-expansive member 5. That is, the metal member 2 is provided outside of the heat-expansive member 5. The metal member 2 does not necessarily cover a whole outer face of the heat-expansive member 5, and may be provided at at least a part of an outside of the heat-expansive member 5.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a fire-resistant member and the like for ensuring fire-resistant performance with respect to a penetrating portion such as a pipe to a partition portion or a cable.

  In buildings and the like, pipes and cables (hereinafter sometimes simply referred to as long bodies) may be laid in each room partitioned by a partition. In this case, for example, when a fire occurs in one room, the fire spreads over the entire structure along the long body, and there is a risk of causing enormous damage.

  As a fireproof structure of a long body that penetrates such a partition part, for example, there is a method of filling a heat-expandable putty or mortar between the long body and a through hole (for example, Patent Document 1).

  In addition, there is a method in which a plurality of fire-resistant treatment materials in which a heat-expandable member is covered with a cover body are arranged in a penetration portion of a wiring / piping material, and the penetration portion is closed (for example, Patent Document 2).

JP 09-262305 A JP-A-2015-19853

  FIG. 11A is a schematic diagram showing a conventional fireproof structure 100. The fireproof structure 100 is formed with respect to the long body 109 that penetrates the through hole 103 formed in the partition portion 101. A thermal expansion body 107 is disposed on the outer periphery of the through hole 103, and a mortar 105 is filled between the thermal expansion body 107 and the inner surface of the through hole 103.

  FIG. 11B is a conceptual diagram showing a state in which a fire has occurred in one area partitioned by the partition unit 101. In the example shown in FIG. 11 (b), the protective layer portion of the long body 109 is burned out and the internal metal portion is exposed. When a fire occurs, the thermal expansion body 107 expands and closes the gap between the long body 109 and the through hole 103. Thereby, it can suppress that the flame, heat | fever, smoke, etc. of a fire flow out to the other of the division part 101. FIG.

  Here, the thermal expansion body 107 on the fire-occurring side starts to expand in a short time. However, when some of the thermal expansion bodies 107 expand, a heat insulating portion is formed in the through hole, and all the thermal expansion bodies 107 constituting the refractory structure 100 may not expand and remain. In particular, in the case where the thickness of the partition portion 101 is large or the size of the through hole 103 is large, it is necessary to increase the length and thickness of the thermal expansion body 107 in order to obtain desired fire resistance. In such a case, a partial non-expanded portion of the thermal expansion body 107 is likely to occur.

  In this state, it is sufficient if a predetermined fire resistance can be ensured. However, when partial expansion occurs in the thermal expansion body 107, a large force is applied between the non-expanded portion and the expanded portion, and the expanded thermal expansion body 107 Some may fall out. In particular, when the partition part is a floor and a fire occurs on the lower floor, the inflating part easily falls off. If the inflating part falls off, the remaining non-inflating part starts to inflate, but by repeating the inflating and dropping off at such a time difference, the fire resistance performance of the fireproof structure 100 that is initially expected is ensured. It becomes difficult.

  On the other hand, in order to improve the handleability of the thermal expansion body 107 as in Patent Literature, it is possible to suppress the thermal expansion member from falling off by covering the thermal expansion body 107 with a cover or the like. If the cover 107 is covered with a cover, the thermal expansion of the thermal expansion body 107 is hindered. For this reason, a fire resistant member that is excellent in handleability, suppresses expansion of the thermal expansion body with a time difference, and can secure desired fire resistance is desired.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a fireproof member and the like that have good workability and can ensure good fireproof performance.

  In order to achieve the above-described object, a first invention is provided on a substantially cylindrical main body, a thermal expansion member provided on an inner surface of the main body, and inner peripheral surfaces of the main body and the thermal expansion member. And an elastic body provided so as to cover the thermal expansion member, and a heat conduction member is formed on at least a part of the outer peripheral side of the thermal expansion member.

  The heat conducting part may be a metal member, and the metal member may be disposed between the main body part and the thermal expansion member.

  The metal member may be disposed only on the outer surface side of the thermal expansion member, and may be disposed integrally and continuously in the axial direction and the circumferential direction of the main body portion.

  The heat conducting part may be a slit, and the slit may be formed in a part of the main body part of the outer peripheral part of the thermal expansion member.

  In the vicinity of one end of the main body, a plurality of tongue-shaped pieces that can be deformed from the inner surface of the main body toward the center are provided at positions shifted from the end of the main body. The thickness of the main body from the position where the piece is formed to one end of the main body may be thicker than the other part.

  A thermal expansion member accommodating portion having an inner diameter larger than other portions is formed over the entire inner surface of the main body, and the thermal expansion member is accommodated in the thermal expansion member accommodating portion, and the thermal expansion member The tongue-shaped piece may be formed at one end of the accommodating portion.

  The main body is preferably made of rubber, and the elastic body is preferably a sponge.

  According to the first invention, since a fireproof structure can be obtained without using mortar or the like, the workability is excellent. Further, since the thermal expansion member is covered with the elastic member, the thermal expansion member is not exposed to the outside, and the thermal expansion member is not damaged during handling. Further, even when the size and the number of elongated bodies to be penetrated differ due to deformation of the elastic body, the same member can be used.

  Moreover, since the heat conduction part is formed on the outer peripheral side of the thermal expansion member, the thermal expansion member can be expanded substantially uniformly in a short time. For this reason, stable fireproof performance can be ensured. At this time, since the heat conducting portion is provided on the outer peripheral side of the thermal expansion member, it does not hinder the expansion of the thermal expansion member.

  Further, if the heat conducting portion is a metal member, heat can be transmitted to the thermal expansion member substantially uniformly by the heat conduction of the metal member.

  In particular, since the metal member is disposed only on the outer surface side of the thermal expansion member, for example, the expansion of the thermal expansion member in the axial direction of the main body portion is not hindered, and the productivity is excellent. In addition, the metal member is disposed on the outer surface side of the thermal expansion member in an integrated and continuous manner in the axial direction and the circumferential direction of the main body, so that it is substantially uniform in a short time with respect to the entire thermal expansion member. Heat can be transmitted.

  For example, if the entire outer periphery of the thermal expansion member is covered with a metal member, as described above, the expansion of the thermal expansion member in the central direction or the axial direction of the main body is hindered. Moreover, also when a metal member and a thermal expansion member are laminated | stacked inside a thermal expansion member, it becomes the hindrance of expansion | swelling of a thermal expansion member. In other words, even when the thermal expansion member is not integrated as a whole but is partitioned into a plurality of parts, the thermal expansion member is prevented from being uniformly expanded.

  Moreover, even if the heat conducting portion is a slit, heat can be transmitted to the thermal expansion member via the slit. For example, by forming the slit along the axial direction of the main body, the thermal expansion member can be expanded in a short time substantially uniformly with respect to the axial direction of the main body.

  In addition, by providing a tongue-like piece on the inner surface of the main body portion, the partition portion is blinded. At this time, the rigidity of the base of the tongue-shaped piece can be increased by making the thickness from the position where the tongue-shaped piece is formed to one end of the main body portion thicker than the other part. For this reason, when inserting an elongate body with respect to a main-body part, the deformation amount in the base part of a tongue-like piece can be made small. For this reason, the bent portion between the tongue-shaped piece and the main body is not greatly extended, and the base portion of the tongue-shaped piece is not damaged.

  In addition, since the thermal expansion member is accommodated in the thermal expansion member accommodating portion that is formed over the entire circumference of the inner surface of the main body portion and has an inner diameter slightly larger than other portions, the unevenness on the outer surface of the elastic body is reduced. And it can suppress that a clearance gap produces between an elastic body, a main-body part, and a thermal expansion member. In addition, by forming the tongue-like piece at the end of the thermal expansion member accommodating portion, the tongue-like piece regulates the expansion direction when the thermal expansion member is expanded, and the thermal expansion member is efficiently expanded in the axial center direction. Can do.

  Moreover, if the main body is made of rubber, the attachment work to the through-hole is facilitated by elasticity, and the fire of the main body is incombustible, so that the spread of fire can be prevented. Similarly, if the elastic body is a flame retardant sponge, the spread of fire can be prevented.

  2nd invention comprises the through-hole provided in the division part, the fireproof member provided in the said through-hole, and the elongate body penetrated by the said fireproof member, The said fireproof member is a substantially cylinder. A body-shaped main body, a thermal expansion member provided on the inner surface of the main body, and an elastic body provided on an inner peripheral surface of the main body and the thermal expansion member and provided to cover the thermal expansion member. The fireproof structure is characterized in that a heat conducting portion is formed on at least a part of the outer peripheral side of the thermal expansion member, and the elongated body is supported by the inner surface of the elastic body.

  According to the second invention, since the thermal expansion member is covered with the elastic body, the mounting workability is excellent, and since the heat conduction portion is formed on the outer peripheral portion of the thermal expansion member, the thermal expansion member can be quickly mounted. It can be expanded substantially uniformly.

  3rd invention is provided in the internal peripheral surface of the substantially cylindrical main-body part, the thermal expansion member provided in the inner surface of the said main-body part, the said main-body part and the said thermal expansion member, and covers the said thermal expansion member A heat conducting portion is formed on at least a part of the outer peripheral side of the thermal expansion member, and each of the main body portion, the thermal expansion member, and the elastic body has a circumferential direction. Using a refractory member having a split portion along the axial direction of the main body portion, and passing the elongated body through a through-hole formed in the partition portion; opening the split portion; and And a step of attaching to the outer periphery of the scale body.

  According to the third invention, since the thermal expansion member is covered with the elastic body, the thermal expansion member can be easily constructed, and the heat conduction portion is formed on the outer peripheral portion of the thermal expansion member. A fire prevention structure that can be expanded substantially uniformly can be obtained.

  ADVANTAGE OF THE INVENTION According to this invention, workability | operativity is favorable and the fireproof member etc. which can ensure favorable fireproof performance can be provided.

The exploded front perspective view which shows the fireproof member 1. FIG. FIG. 3 is an assembled rear perspective view showing the refractory member 1. Sectional drawing of the refractory member 1. FIG. The perspective view which shows the elastic body 7. FIG. The figure which shows the process of constructing a fire prevention structure. Sectional drawing which shows the process of constructing a fire prevention structure. The figure which shows the process of constructing a fire prevention structure. Sectional drawing which shows the process of constructing a fire prevention structure. The assembly back perspective view showing fireproof member 1a. Sectional drawing of the refractory member 1a. (A), (b) is sectional drawing which shows the conventional fireproof structure 100. FIG.

  Hereinafter, embodiments of the present invention will be described in detail. FIG. 1 is an exploded perspective view showing a refractory member 1 according to the present invention, FIG. 2 is an assembled perspective view of the refractory member 1 viewed from the back side, and FIG. 3 is a cross-sectional view of the refractory member 1. The refractory member 1 mainly includes a main body 3, a metal member 2, a thermal expansion member 5, an elastic body 7, and the like.

  The main body 3 is made of, for example, flame retardant rubber. That is, the main body 3 is easily elastically deformed. The outer shape of the main body 3 is substantially circular, and the main body 3 is generally cylindrical as a whole. A flange portion 9 that protrudes outward is formed on the outer periphery of one opening side of the main body portion 3. A plurality of tongue-like pieces 19 are formed on the inner surface of the main body portion 3 near the other opening side end portion toward the center.

  The tongue-shaped piece 19 is formed from the inner surface of the main body 3 toward the center, and can be easily deformed. The plurality of tongue-shaped pieces 19 substantially close the other opening of the main body 3. In addition, the tongue-shaped piece 19 is formed in the position (for example, about 5 mm) shifted | deviated a little inside (one opening side) from the edge part of the main-body part 3, as shown in figure. Thus, by forming the tongue-like piece 19 at a position shifted from the end of the main body 3, the outer periphery (end edge) of the main body 3 is inserted when piping or the like is inserted from the tongue-like piece 19 side. It can suppress falling down inside. For this reason, piping etc. can be supported in the approximate center of the main-body part 3. FIG. Further, when the pipe is inserted from one opening side, the base portion of the tongue-like piece 19 is hardly damaged.

  In order to suppress damage to the base portion of the tongue-shaped piece 19, the thickness of the main body portion 3 from the position where the tongue-shaped piece 19 is formed to the end portion of the main body portion 3 (right end portion in FIG. 3) It is desirable that it is thicker than the part (for example, the thickness of the main body 3 at the part where the thermal expansion member 5 is disposed). By doing in this way, the rigidity of the tongue-shaped piece 19 base part can be ensured. For the same reason, it is desirable that the thickness of the main body 3 of the base portion of the flange portion 9 is also thicker than other portions.

  On the outer peripheral surface of the main body 3, fins 11 are formed at a plurality of locations (for example, 4 locations) as necessary. The fin portion 11 has a substantially triangular shape and protrudes outward from the outer peripheral surface of the main body portion 3. The fin portions 11 are arranged on the outer peripheral surface of the main body portion 3 at a predetermined interval in the circumferential direction. That is, when the sides of the adjacent fin portions 11 are connected by a line in the front view of the main body portion 3, a substantially rectangular shape is formed by the four fin portions 11.

  A concave portion 13 is formed on the outer peripheral surface of the main body portion 3 on the front side of the fin portion 11 (on the flange portion 9 side). The concave portion 13 is a thin portion formed in the main body portion 3. The size and depth of the concave portion 13 are sizes that can accommodate the fin portion 11 when the fin portion 11 is bent toward the concave portion 13. That is, it is desirable that the size of the recess 13 is greater than or equal to the size of the fin portion 11, and the depth of the recess 13 is greater than the thickness of the fin portion 11.

  A thermal expansion member accommodating portion 17 is formed on the inner surface side of the main body portion 3. The thermal expansion member accommodating portion 17 has an inner diameter slightly larger than other portions on the inner peripheral surface of the main body portion 3, and is formed over the entire inner surface of the main body portion 3. The tongue piece 19 described above is formed at the end of the thermal expansion member accommodating portion 17.

  By forming the tongue-shaped piece 19 at one end of the thermal expansion member accommodating portion 17, the expansion direction can be regulated by the tongue-shaped piece 19 when the thermal expansion member 5 is expanded. For this reason, the thermal expansion member 5 can be efficiently expanded in the axial center direction of the main body 3.

  The thermal expansion member accommodating portion 17 accommodates the thermal expansion member 5 and the metal member 2 that are expanded by heat during a fire or the like. That is, the thermal expansion member 5 is provided on the inner surface of the main body 3, and the metal member 2 is disposed between the main body 3 and the thermal expansion member 5. It is desirable that the inner surface of the main body 3 and the inner surface of the thermal expansion member 5 are substantially the same surface. By doing in this way, the unevenness | corrugation of the outer surface of the elastic body 7 mentioned later can be made small, and it can suppress that a clearance gap produces between the elastic body 7, the main-body part 3, and the thermal expansion member 5. FIG.

  The metal member 2 is made of aluminum, for example. The metal member 2 is disposed between the main body 3 (thermal expansion member accommodating portion 17) and the thermal expansion member 5. That is, the metal member 2 is disposed on the outer surface side of the thermal expansion member 5. The metal member 2 does not need to cover the entire outer surface of the thermal expansion member 5 and may be disposed on at least a part of the outer peripheral side of the thermal expansion member 5.

  The metal member 2 may be a metal foil or a metal plate, or may be a metal cloth. However, considering the thermal conductivity, the metal member 2 may be, for example, a metal foil or a metal plate of 90 μm or more. desirable. Moreover, in order to ensure the contact area of the metal member 2 and the thermal expansion member 5, and the adhesiveness, the surface of the metal member 2 may be uneven | corrugated like a cloth, for example. In view of cost, weight, and workability, the metal member 2 is desirably 1 mm or less.

  The metal member 2 functions as a heat conducting unit for transferring heat to the thermal expansion member 5. That is, when a heat conducting part is formed on at least a part of the outer peripheral side of the thermal expansion member 5 and a part of the metal member 2 is heated, the heat is transferred by the metal member 2 in the axial direction and the circumferential direction of the main body part 3. It is transmitted. For this reason, heat can be transmitted to the entire thermal expansion member 5. As a result, the thermal expansion member 5 can be expanded substantially uniformly in a short time.

  In order to obtain such an effect, it is desirable that the metal member 2 and the thermal expansion member 5 be continuously and integrally disposed in the axial direction and the circumferential direction of the main body 3. That is, it is desirable that the whole is continuous continuously except for a split portion described later. For example, in a method in which a plurality of thermal expansion members 5 covered with the metal member 2 are arranged, it becomes difficult to efficiently transmit heat to the whole, and the thermal expansion member 5 is divided, so that the thermal expansion members 5 are uniformly expanded. This is because it becomes difficult.

  The metal member 2 is preferably disposed only on the outer peripheral surface of the thermal expansion member 5. That is, it is desirable that the metal member 2 is disposed only in a direction parallel to the axial direction of the main body 3. For example, in FIG. 3, if the metal member 2 is disposed on the front and back side portions of the thermal expansion member accommodating portion 17, there is a possibility that the thermal expansion member 5 may be prevented from expanding. Further, if the metal member 2 covers a plurality of surfaces of the thermal expansion member 5, the productivity becomes worse.

  An elastic body 7 is disposed on the inner peripheral surfaces of the main body 3 and the thermal expansion member 5 so as to cover the thermal expansion member 5. The elastic body 7 is, for example, a urethane elastic body, and is preferably a flame retardant sponge.

  FIG. 4 is a perspective view showing the elastic body 7 in a state before being rounded. The elastic body 7 is a corrugated elastic body. That is, on one surface of the elastic body 7, the corrugated peaks 21 and valleys 23 are regularly arranged in the width direction and the longitudinal direction perpendicular thereto. When the elastic body 7 is rounded, the concavo-convex shape formed by the peak portion 21 and the valley portion 23 is set to the inner surface side.

  The elastic body 7 is not limited to the illustrated form. For example, it is not necessary to form an uneven shape on the inner surface, and the peak portion 21 and the valley portion 23 may be formed so as to be continuous in a certain direction.

  A split portion 15 a is formed on the side surface of the main body portion 3 from one end portion to the other end portion. That is, the main body 3 can be opened in a C shape by the split portion 15a. In addition, the metal member 2 and the thermal expansion member 5 are accommodated in the thermal expansion member accommodating portion 17 of the main body 3 by rolling a belt-shaped member. At this time, the butted portions of the rolled metal member 2 and the thermal expansion member 5 become the split portions 15b and 15c, respectively.

  Further, the elastic body 7 is also housed in a rounded manner inside the main body 3, but the butted portion becomes the split portion 15 d. That is, an end surface that becomes a butt portion when the elastic body 7 is rounded corresponds to the split portion 15d. Thus, even when the thermal expansion member 5 and the elastic body 7 are accommodated in the main body 3, the entire refractory member 1 can be opened in a C shape by the split portions 15a, 15b, 15c, and 15d.

  As a method for assembling the refractory member 1, first, the thermal expansion member 5 is formed to a predetermined thickness, and is cut according to the width and length of the thermal expansion member accommodating portion 17 to form a belt shape. Next, the band-shaped metal member 2 cut in advance with a predetermined length and width is attached to the outer surface of the band-shaped thermal expansion member 5. In addition, the metal member 2 and the thermal expansion member 5 are affixed by the adhesiveness which the thermal expansion member 5 has.

  The obtained laminate is accommodated in the thermal expansion member accommodating portion 17 of the main body portion 3. Finally, the elastic body 7 is disposed on the inner surface of the main body 3 (thermal expansion member 5). The elastic body 7 is fixed by the adhesiveness of the thermal expansion member 5. Thus, the assembly of the refractory member 1 is completed. Since the thermal expansion member 5 is completely covered with other members and is not exposed, the thermal expansion member 5 is not damaged during handling.

  In addition, after attaching a metal sheet to the surface of the thermal expansion member 5, you may cut | disconnect both to a desired size simultaneously. Moreover, an adhesive member may be arrange | positioned on the outer surface of the metal member 2 as needed, and the metal member 2 and the main-body part 3 may be fixed.

  Next, the construction method of the fireproof structure using the fireproof member 1 will be described. FIG. 5 is a view showing a state before the fireproof member 1 is attached to the partition portion 25. First, as shown in FIG. 5, the through-hole 29 is formed in the partition part 25 which is a fire prevention partition part. The partition unit 25 is a wall that partitions the internal space of a structure such as a building.

  Next, the long body 27 is inserted into the through hole 29. The long body 27 is, for example, a cable or a pipe. A plurality of elongated bodies may be inserted. The through hole 29 has a shape corresponding to the outer shape of the main body 3 of the refractory member 1. In the illustrated example, the through hole 29 is substantially circular.

  Next, the fireproof member 1 is attached to the long body 27. As described above, the fire-resistant member 1 is provided with the split portions 15a, 15b, 15c, and 15d in the main body portion 3, the metal member 2, the thermal expansion member 5, and the elastic body 7, respectively. Therefore, the fireproof member 1 can be easily attached to the outer periphery of the long body 27 from the side of the long body 27 by aligning the positions of all the split portions 15a, 15b, 15c, and 15d in the circumferential direction and opening them. be able to.

  FIG. 6 is a cross-sectional view of this state. As described above, an uneven shape is formed on the inner surface side of the elastic body 7. The concavo-convex ridge 21 is easily crushed in contact with the elongated body 27. Therefore, even if the outer diameter and the number of the long bodies 27 are changed, the same fireproof member 1 can be used.

  Further, the long body 27 comes into contact with a part of the peak portion 21 of the elastic body 7 and is supported by the peak portion 21. That is, the outer peripheral surface of the long body 27 is not evenly adhered to the entire inner surface of the elastic body 7 but is supported by a part of the inner surface of the elastic body 7. For this reason, the sliding of the long body 27 and the elastic body 7 is good.

  Further, the tongue-like piece 19 of the main body 3 is bent along the long body 27. Therefore, the distal end side of the tongue-like piece 19 is in close contact with the outer peripheral surface of the long body 27 that penetrates the main body 3. As described above, since an uneven shape is formed on the inner surface of the elastic body 7, there is a possibility that a gap is generated between the outer peripheral surface of the long body 27 and the elastic body 7. The tongue-like piece 19 functions as a blindfold between the front side and the back side of the partition portion 25 even when such a gap is generated.

  Next, as shown in FIG. 7, the fireproof member 1 is moved along the long body 27, and the main body 3 is inserted into the through hole 29. Here, the outer diameter of the flange portion 9 is sufficiently larger than the inner diameter of the through hole 29. For this reason, the insertion margin of the refractory member 1 can be made constant by inserting the refractory member 1 into the through-hole 29 until the flange portion 9 comes into contact with the front surface of the partition portion 25.

  Here, the inner diameter of the through hole 29 is substantially the same as or slightly smaller than the outer diameter of the main body 3. Moreover, since the main-body part 3 is rubber, it deform | transforms easily. For this reason, the outer peripheral surface of the main body 3 can be brought into close contact with the inner surface of the through hole 29. Further, since the main body 3 is made of rubber, the main body 3 can be burned out after a predetermined time during a fire, and the through-hole 29 can be closed by the thermal expansion member 5. For example, in a metal main body portion, the main body portion remains even in the event of a fire, so that it is difficult to reliably block the outside of the main body portion. In addition, when the thermal expansion member 5 expands, the metal member 2 is easily pushed out and does not hinder the closing of the through hole.

  FIG. 8 is a cross-sectional view of this state. As described above, the fin portion 11 is formed on the outer peripheral surface of the main body portion 3. The fin portion 11 can be easily deformed. For this reason, the fin portion 11 in contact with the inner surface of the through-hole 29 is bent along the outer peripheral surface of the main body portion 3. At this time, a concave portion 13 is formed in front of the fin portion 11. For this reason, the bent fin part 11 is accommodated in the recessed part 13. For this reason, the fin part 11 does not interfere with the insertion of the main body part 3 into the through hole 29.

  Further, since the fin portion 11 functions as a return portion formed on the outer peripheral surface of the main body portion 3, it is possible to prevent the main body portion 3 from coming out of the through hole 29. In addition, the fin part 11 does not need to be four places, for example, as long as it is arrange | positioned at multiple places, such as six places, any number may be sufficient.

  As described above, the fire prevention structure 30 including the elongated body 27 inserted through the through hole 29 and the fireproof member 1 provided in the through hole 29 can be constructed. In this state, the tongue-like piece 19 is deformed so as to fall inside the main body 3. For this reason, it is possible to suppress the thermal expansion member 5 from expanding outward from the main body 3. At this time, as described above, the tongue-shaped piece 19 is disposed at a position shifted from the end of the main body 3, and the base of the tongue-shaped piece 19 (the base on the end of the main body 3) is thick. For this reason, the deformation of the end portion of the main body 3 is suppressed by the deformation of the tongue-shaped piece 19, and the rigidity of the main body 3 on the tensile deformation side of the tongue-shaped piece 19 can be increased. For this reason, damage to the tongue-like piece 19 etc. can be suppressed.

  In order to avoid stress concentration on the base of the tongue-shaped piece 19, it is desirable that the taper-like thickness of the base of the tongue-shaped piece 19 (the end side base of the main body 3) is changed. That is, as shown in FIG. 3, it is desirable to form a taper from the base of the tongue-shaped piece 19 in an undeformed state to the end of the main body 3 so that the inner diameter of the main body 3 gradually increases. .

  In addition, the fireproof member 1 can also be attached to a substantially rectangular through-hole. In this case, the refractory member 1 is disposed in the through hole so that the fin portion 11 is positioned at the corner of the through hole 29a, and the substantially rectangular shape formed by connecting the four fin portions 11 and the through hole 29a. Corresponding to the substantially rectangular shape.

  From this state, the caulking material is filled into the through-hole 29a from the vicinity of the corner of the through-hole 29a (the portion where the gap between the flange 9 and the through-hole 29a is generated). At this time, the fin portion 11 can suppress the caulking material from flowing to the back side of the partition portion 25.

  As described above, according to the fireproof member 1 according to the present invention, the fireproof structure 30 can be easily obtained without using mortar or the like. Moreover, since the refractory member 1 can be attached from the side of the long body 27 by the split portions 15a, 15b, 15c, and 15d, it can be easily applied to the long body 27 that has already been inserted into the through hole. The refractory member 1 can be attached.

  In addition, by disposing the metal member 2 that is the heat conducting portion on the outer peripheral portion of the thermal expansion member 5, it is possible to suppress local expansion of the thermal expansion member 5 and the time difference of expansion start due to the site. For this reason, the thermal expansion member 5 can be expanded substantially uniformly as a whole, and partial dropping of the thermal expansion member 5 can be suppressed. Such an effect becomes more prominent as the width of the thermal expansion member 5 (the length in the axial direction of the main body 3) becomes larger. For example, it is particularly effective when the width of the thermal expansion member 5 is 50 mm or more. is there.

  At this time, since the metal member 2 is disposed only on the outer peripheral side of the thermal expansion member 5, the metal member 2 does not hinder expansion of the thermal expansion member 5.

  In addition, the elastic body 7 is arranged inside the main body 3 and the elastic body 7 is easily crushed according to the outer diameter of the long body 27, so that the long body 27 having a plurality of diameters is formed by one fireproof member 1. Can be applied to.

  Further, since the thermal expansion member 5 and the long body 27 do not directly contact each other, and the long body 27 contacts the elastic body 7, the long body 27 and the elastic body 7 slide well. The refractory member 1 can be prevented from shifting when moved in the longitudinal direction.

  In particular, the inner surface of the elastic body 7 has an uneven shape, and the long body 27 is mainly supported by the mountain portion 21. Further, when the mountain portion 21 is crushed by contact with the long body 27, the deformation of the mountain portion 21 can escape to the valley portion 23 side. For this reason, the repulsive force which the long body 27 receives from the elastic body 7 becomes small compared with the case where an elastic body is contact | adhered uniformly with respect to the whole outer peripheral surface of the long body 27. FIG. For this reason, the friction between the long body 27 and the elastic body 7 is reduced. As a result, when the long body 27 moves in the longitudinal direction, it is possible to suppress the elastic body 7 from dropping off as the long body 27 moves.

  Moreover, there is a possibility that a gap is formed between the long body 27 and the elastic body 7 due to the uneven shape of the elastic body 7, but in the state where the long body 27 penetrates the main body portion, the tongue-shaped piece 19 The one opening of the main body 3 is generally closed. For this reason, the tongue-shaped piece 19 can blind the front and rear surfaces of the partition portion 25. At this time, since the tongue-like piece 19 can be easily deformed, the insertion of the elongated body 27 into the main body 3 is not hindered.

  In addition, the tongue-shaped piece 19 is formed at a position shifted from the end portion, and by increasing the thickness of the base portion of the tongue-shaped piece 19 (the base portion on the end portion side of the main body portion 3), The deformation of the main body 3 can be suppressed, and damage to the tongue-like piece 19 can be suppressed.

  In the construction method described above, an example in which the long body 27 is inserted in advance into the through hole is shown. However, the fireproof member 1 is first attached to the through hole, and then the long body is attached to the fireproof member 1. 27 may be inserted.

  Moreover, although the partition part 25 showed the example which is a wall, the partition part 25 may be a floor (ceiling). In this case, the fire-resistant member 1 can be prevented from dropping by arranging the flange portion 9 on the upper side.

  Next, a second embodiment will be described. FIG. 9 is a rear perspective view showing the fireproof member 1a according to the second embodiment, and FIG. 10 is a cross-sectional view. In addition, in the following description, about the structure which show | plays the same function as the fireproof member 1, the code | symbol same as FIGS. 1-8 is attached | subjected and the overlapping description is abbreviate | omitted.

  The refractory member 1 a has substantially the same configuration as the refractory member 1, but differs in that a slit 31 is formed instead of the metal member 2. The slits 31 are formed at a plurality of locations at predetermined intervals in the circumferential direction of the main body 3. The slit 31 is formed with a predetermined length in the axial direction of the main body 3. For example, as shown in FIG. 10, it is formed so as to correspond to the length of the thermal expansion member accommodating portion 17.

  The slit 31 passes through the main body 3. For this reason, in the slit 31, a part of the thermal expansion member 5 is exposed outside the main body 3. Therefore, heat from the outside can be transmitted to the thermal expansion member 5 more efficiently. That is, the slit 31 can function as a heat conducting unit.

  Note that the thermal expansion member 5 directly contacts the inner surface of the external through-hole from the slit 31 during expansion. For example, since there is no residue of the main body portion 3 between the thermal expansion member 5 and the inner surface of the through hole, the thermal expansion member 5 is more firmly fixed to the inner surface of the through hole, and can be prevented from falling off.

  According to the second embodiment, an effect similar to that of the first embodiment can be obtained. As described above, if a configuration is provided on the outer peripheral surface of the thermal expansion member 5 such that heat is more uniformly transmitted to the entire thermal expansion member 5, the thermal expansion member 5 can be uniformly expanded.

  As mentioned above, although embodiment of this invention was described referring an accompanying drawing, the technical scope of this invention is not influenced by embodiment mentioned above. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the technical idea described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs.

DESCRIPTION OF SYMBOLS 1, 1a ......... Fireproof member 2 ......... Metal member 3 ......... Main body part 5 ......... Thermal expansion member 7 ...... Elastic body 9 ......... Flange part 11 ......... Fin part 13 ......... Recessed part 15a, 15b, 15c, 15d ......... Split portion 17 ......... thermal expansion member accommodating portion 19 ......... tongue piece 21 ......... mountain portion 23 ......... valley portion 25 ......... partition portion 27 ......... Long body 29... Through hole 30... Fire prevention structure 31... Slit 100... Fire prevention structure 101. Expansion body 109 ......... Long body

Claims (9)

A substantially cylindrical main body,
A thermal expansion member provided on the inner surface of the main body,
An elastic body provided on the inner peripheral surface of the main body and the thermal expansion member, and provided to cover the thermal expansion member;
Comprising
A heat-resistant member, wherein a heat conducting portion is formed on at least a part of the outer peripheral side of the thermal expansion member.   The refractory member according to claim 1, wherein the heat conducting portion is a metal member, and the metal member is disposed between the main body portion and the thermal expansion member.   The fireproof member according to claim 2, wherein the metal member is disposed only on an outer surface side of the thermal expansion member, and is continuously disposed integrally in an axial direction and a circumferential direction of the main body portion.   The fireproof member according to claim 1, wherein the heat conducting portion is a slit, and the slit is formed in a part of the main body portion of the outer peripheral portion of the thermal expansion member.   In the vicinity of one end of the main body, a plurality of tongue-shaped pieces that can be deformed from the inner surface of the main body toward the center are provided at positions shifted from the end of the main body. The refractory member according to any one of claims 1 to 4, wherein a thickness of the main body portion from a position where the piece is formed to one end portion of the main body portion is thicker than other portions. A thermal expansion member accommodating portion having an inner diameter larger than other portions is formed over the entire inner circumference of the main body, and the thermal expansion member is accommodated in the thermal expansion member accommodating portion.
The refractory member according to claim 5, wherein the tongue-like piece is formed at one end of the thermal expansion member accommodating portion.   The fireproof member according to any one of claims 1 to 6, wherein the main body is made of rubber, and the elastic body is a sponge. A through hole provided in the partition;
A refractory member provided in the through hole;
An elongated body inserted through the fireproof member;
Comprising
The refractory member is
A substantially cylindrical main body,
A thermal expansion member provided on the inner surface of the main body,
An elastic body provided on the inner peripheral surface of the main body and the thermal expansion member, and provided to cover the thermal expansion member;
Comprising
A heat conduction part is formed on at least a part of the outer peripheral side of the thermal expansion member,
The fire prevention structure, wherein the long body is supported by an inner surface of the elastic body. A substantially cylindrical main body, a thermal expansion member provided on an inner surface of the main body, an elastic body provided on an inner peripheral surface of the main body and the thermal expansion member, and provided to cover the thermal expansion member; And a heat conduction part is formed on at least a part of the outer peripheral side of the thermal expansion member, and the main body part, the thermal expansion member, and the elastic body are each provided with a part in the circumferential direction. Using a refractory member having a split portion along the axial direction of
Passing the elongated body through the through-hole formed in the partition part;
Opening the split part and attaching the fireproof member to the outer periphery of the elongated body;
The construction method of the fire prevention structure characterized by comprising.

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