JP7207959B2 - Fireproof materials, fireproof structures - Google Patents

Description

The present invention relates to, for example, a fire-resistant member or the like for ensuring fire-resistant performance for penetrating parts such as pipes and cables to compartments.

2. Description of the Related Art In a building or the like, pipes and cables (hereinafter simply referred to as long bodies) may be laid in each room partitioned by partitions. In this case, for example, if a fire breaks out in one of the rooms, the fire spreads through the long body and spreads throughout the building, possibly causing serious damage.

In the fire-resistant structure of the elongated body which penetrates such a division part, it is necessary to fill the clearance gap between the elongated body and the through-hole. However, the outer diameter of the elongated body inserted through the partition is not constant, and the gap between the through-hole and the elongated body is not constant depending on the type of the elongated body.

In order to apply such elongated bodies having different outer diameters, there is a method of arranging an elastically deformable foam on the outer periphery of the elongated body (for example, Patent Document 1). In addition, there is a method in which a plurality of pleats are provided on the inner peripheral surface of a fireproof member arranged on the outer periphery of the elongated body, and the pleats are brought into close contact with the outer peripheral surface of the elongated body (for example, Patent Document 2).

Moreover, there is a method of filling the gap by winding a string-shaped fire-resistant member around the outer periphery of a long body a plurality of times (Patent Document 3). In this case, by changing the number of times the string-like fireproof member is wound according to the gap between the elongated body and the inner surface of the through hole, it can be applied to different gaps.

JP 2018-105039 A JP 2017-128960 A JP-A-2001-187969

Generally, in the methods disclosed in Patent Literature 1 and Patent Literature 2, first, a fire-resistant member is arranged on the outer periphery of the elongated body, which has been inserted through the through hole in advance, outside the through hole. Next, by moving the fire-resistant member into the through-hole along the elongated body, the fire-resistant member is arranged in the gap between the through-hole and the elongated body to form the fire-resistant structure.

However, in order to be applicable to a plurality of types of elongated bodies, it is necessary to easily deform the foams and pleats arranged around the elongated body with respect to the outer shape of the elongated body. For this reason, the foam and fold pieces are made of flexible members. Therefore, when the refractory member is arranged on the outer periphery of the elongated body and slid into the through hole, there is a risk that the foamed body and the pleated pieces will be damaged. However, if the rigidity of the refractory member in contact with the elongated body is increased, the ability to follow the outer shape of the elongated body is lowered, and the gap between the through-hole and the elongated body cannot be sufficiently filled.

On the other hand, in Patent Document 3, the gap between the through-hole and the elongated body can be filled by changing the number of windings of the string-like member according to the gap between the elongated body and the through-hole. However, if the gap is large, the number of windings is increased, resulting in poor workability. In particular, when working in a confined space, it is not easy to handle a long cord-like member and wind it around the outer periphery of a long object many times. In addition, since it is necessary to adjust the number of times of winding on site, the construction quality tends to vary depending on the worker.

SUMMARY OF THE INVENTION The present invention has been made in view of such problems, and an object of the present invention is to provide a fire-resistant member or the like which is excellent in workability and capable of obtaining a fire-resistant structure of stable quality.

In order to achieve the above object, the first invention is a fire-resistant member that is used by being wrapped around a long body, comprising an elastically deformable combustible foam and a fire-resistant member laminated on the foam. a thermal expansion member; an elastically deformable noncombustible material laminated on the thermal expansion member; and a bag that collectively covers the foam, the thermal expansion member, and the noncombustible material ; The fire-resistant member is characterized in that a combustible core material is provided between it and the thermal expansion member .

A fitting may be provided that can be fixed by sandwiching the position where the refractory member is rolled and both ends are wrapped.

A second aspect of the invention is a fire-resistant member that is wound around a long body, comprising an elastically deformable combustible foam, a thermal expansion member laminated on the foam, and the thermal expansion member. and an elastically deformable incombustible material that is laminated on the lining, and a bag that collectively covers the foam, the thermal expansion member, and the incombustible material, and sandwiches the position where the fireproof member is rolled and both ends are wrapped. The fire-resistant member is characterized by comprising metal fittings that can be fixed with

According to the first and second inventions, since a soft and elastically deformable foam is used, the shape of the elongated body can be easily followed and the gap between the through hole and the through hole can be filled. Moreover, since the foam and the like are all contained in the bag, the foam is not exposed and the foam and the elongated body do not come into direct contact with each other. Therefore, it is possible to suppress damage to the foam or the like during construction.

In addition, since the foam disposed on the longer body side (inner peripheral side) than the thermal expansion member is flammable, the foam immediately burns and expands the thermal expansion member in the event of a fire or the like. does not interfere with On the other hand, an elastically deformable incombustible material is provided on the inner surface side (peripheral side) of the through hole relative to the thermal expansion member. For this reason, it functions as a cushion that can follow the unevenness of the inner surface of the through hole while ensuring fire resistance.

In addition, by providing a combustible core material between the foam and the thermal expansion member, when the fireproof member is slid along the elongated body and the fireproof member is pushed into the through-hole, the fireproof member is pushed into the through hole. The refractory member can be efficiently inserted into the gap between the through-hole and the elongated body by suppressing the collapsing in the direction. In addition, as with the foam, the core material arranged on the longer body side (inner peripheral side) than the thermal expansion member is flammable, so in the event of a fire or the like, the core material can be quickly destroyed along with the foam. It does not burn and hinder the expansion of the thermal expansion member.

In addition, by providing metal fittings that can hold and fix the position where the fire-resistant member is rolled and wrapped at both ends, the wrapped portion will not open even when the fire-resistant member is moved to the through hole, resulting in workability. is good.

In a third invention, the fire-resistant member according to the first or second invention is used, an elongated body is inserted through a through hole formed in the partition, and the fire-resistant member is inserted into the long body inside the through hole. The fire-resistant structure is characterized in that the fire-resistant member is wrapped around a lengthy body so that a gap between the elongated body and the inner surface of the through hole is closed with the fire-resistant member.

According to the third invention, the foam can reliably fill the gap between the long body and the inner surface of the through hole, and the bag can prevent damage to the foam. Therefore, a fireproof structure with stable construction quality can be obtained.

A fourth invention uses the fire-resistant member according to the first invention or the second invention , which has metal fittings that can be fixed by sandwiching and fixing the positions where the fire-resistant member is rolled and both ends are wrapped, and the partition part A long body is inserted through a through hole formed in the through hole, and the fireproof member is wound around the long body inside the through hole so that the gap between the long body and the inner surface of the through hole is the The fire-resistant structure is characterized in that a part of the fitting that is covered with the fire-resistant member comes into contact with the surface of the partition to position the fire-resistant member.

According to the fourth invention, the same effects as those of the third invention can be obtained, and since the wrap portion is held by the metal fitting, construction is easy. In addition, the metal fittings can increase the rigidity of the fire-resistant member in the axial direction when the fire-resistant member is wrapped around the elongated body in a cylindrical shape. be able to. Furthermore, since the fitting positions the fire-resistant member with respect to the through-hole, stable fire-resistant performance can be obtained.

ADVANTAGE OF THE INVENTION According to this invention, it is excellent in workability, and can provide the fire-resistant member etc. which can obtain the fire-resistant structure of the stable quality.

FIG. 2 is an exploded perspective view showing the fireproof member 1; The figure which shows the process of constructing a fireproof structure. The figure which shows the process of constructing a fireproof structure. Sectional drawing of the state wound around the outer periphery of the long body 13 which shows the fireproof member 1. FIG. A diagram showing the fire-resistant structure 20 The perspective view which shows the metal fitting 21 for fireproof members. The figure which shows the usage method of the metal fittings 21 for fireproof members. The figure which shows the process which inserts|pinches the fireproof member 1 by the metal fittings 21 for fireproof members. Diagram showing the process of constructing other fireproof structures The figure which shows the state which fixed the fixing|fixed part of the metal fittings 21 for fireproof members. (a) is a figure which shows the fireproof structure 20a, (b) is a figure which shows the state by which the fixing|fixed part of the metal fittings 21 for fireproof members was cancelled|released. The perspective view which shows the metal fittings 21a for fireproof members. The perspective view which shows the metal fittings 21b for fireproof members. The figure which shows the fireproof structure 20b.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail. FIG. 1 is an exploded perspective view showing a fireproof member 1 according to the present invention. The fireproof member 1 is mainly composed of a foam 3, a core material 5, a thermal expansion member 7, a noncombustible material 9, a bag body 11 and the like.

The foam 3 is an elastically deformable member, preferably a combustible sponge such as urethane foam. That is, the foam 3 is made of a flexible member that can be easily deformed in the thickness direction. Moreover, it is desirable that the foam 3 is, for example, a corrugated foam. That is, on one surface of the foam 3, corrugated crests and troughs are regularly arranged in the width direction and the longitudinal direction perpendicular thereto.

A core material 5 is laminated on the foam 3 . The core material 5 can be easily rolled, and ensures rigidity in the axial direction of the tube when formed into a tube shape. As the core material 5, a combustible member is used, and for example, cardboard or a resin plate having a certain thickness can be applied.

A thermal expansion member 7 that expands due to heat such as fire is laminated on the core material 5 . That is, the combustible core material 5 is provided between the foam 3 and the thermal expansion member 7 . As described above, the core material 5 ensures rigidity in the axial direction when the refractory member 1 is rolled up, and enhances insertability into a through hole described later. If there is sufficient clearance between the hole and insertion is easy, it is not always necessary. Therefore, when the core material 5 is unnecessary, the foam 3 and the thermal expansion member 7 are laminated so as to be in direct contact with each other.

An elastically deformable incombustible material 9 is laminated on the thermal expansion member 7 . The noncombustible material 9 is made of a flexible member that can be deformed in the thickness direction, and ceramic fiber wool, rock wool, etc., for example, can be applied.

The foam 3 , the core material 5 , the thermal expansion member 7 and the noncombustible material 9 are housed in the bag 11 and covered together by the bag 11 . At this time, the foam 3 is arranged so that the uneven shape formed by the peaks and valleys is on the outside (the side opposite to the core material 5 and in contact with the bag body 11). In addition, the bag body 11 is made of a flexible member such as a nonwoven fabric that does not hinder the deformation of the foam 3 and the noncombustible material 9 in the thickness direction and can follow the deformation.

Next, a method for constructing a fire-resistant structure using the fire-resistant member 1 will be described. 2 to 5 are diagrams showing the construction process of the fireproof structure. First, as shown in FIG. 2, a through hole 17 is formed in a partition 19 that is a fireproof partition. The partition part 19 is a wall that partitions an internal space of a structure such as a building. Next, the elongated body 13 is inserted through the through hole 17 formed in the partition portion 19 . The elongated body 13 is, for example, a cable or pipe. It should be noted that a plurality of elongated bodies may be inserted.

Next, as shown in FIG. 3, the fireproof member 1 is attached to the long body 13 . FIG. 4 is a cross-sectional view of the fire-resistant member 1 wound around the elongated body 13. As shown in FIG. In this way, the fireproof member 1 is wound around the elongated body 13 and used. At this time, the foam 3 is arranged on the innermost side of the fireproof member 1 and on the side in contact with the elongated body 13, and the noncombustible material 9 is arranged on the outermost side.

When the fire-resistant member 1 is wound around the elongated body 13 , both ends of the fire-resistant member 1 are overlapped with each other to form a wrap portion 15 . By doing so, a gap is not formed between the fire-resistant members 1 , and the entire circumference of the elongated body 13 can be covered with the fire-resistant member 1 .

Here, the foam 3 and the core material 5 arranged inside the thermal expansion member 7 are composed of combustible materials. Normally, when a fire occurs, the temperature rises from the side of the elongated body 13 (the inside of the fire-resistant member 1), and the foam 3 and the core material 5 arranged on the inner peripheral side of the fire-resistant member 1 immediately burn. Therefore, the thermal expansion member 7 is heated in a short time, and expansion can be started immediately. At this time, since the foam 3 inside the thermal expansion member 7 is burned out, the expansion of the thermal expansion member 7 in the direction of the elongated member 13 is not hindered.

On the other hand, an incombustible material 9 is arranged on the outer peripheral side of the thermal expansion member 7 . Therefore, the space between the thermal expansion member 7 and the inner surface of the through hole can be reliably closed. In addition, since the noncombustible material 9 is not destroyed by fire even in the event of a fire, the thermal expansion member 7 can be preferentially expanded inward. That is, the expansion direction of the thermal expansion member 7 can be controlled.

Next, as shown in FIG. 5 , the rolled fireproof member 1 is slid along the long body 13 and pushed into the through hole 17 . The fireproof member 1 is thicker than the gap between the through hole 17 and the elongated body 13, but can be inserted into the through hole 17 by deforming the foam 3 and the noncombustible material 9. At this time, since the core material 5 is arranged, it is possible to prevent the cylindrical fire-resistant member 1 from being crushed in the axial direction when the fire-resistant member 1 is pushed into the through hole 17 .

The refractory member 1 inserted into the through-hole 17 can close the gap between the elongated body 13 and the through-hole 17 by elastic restoration of the foam 3 and the incombustible material 9 . More specifically, the foam 3 deforms following the outer shape of the elongated body 13 and adheres to the outer peripheral surface of the elongated body 13 via the bag 11 . Also, the noncombustible material 9 deforms following the shape of the inner surface of the through hole 17 and adheres to the inner peripheral surface of the through hole 17 via the bag body 11 .

In addition, as described above, the inner surface of the foam 3 is formed with unevenness. The uneven peaks are easily crushed by coming into contact with the elongated body 13 . Therefore, even if the outer diameter and the number of the elongated bodies 13 are changed, the same fireproof member 1 can be used.

As described above, the fire-resistant member 1 is wrapped around the elongated body 13 inside the through-hole 17, and the gap between the elongated body 13 and the inner surface of the through-hole 17 is filled with the fire-resistant structure 20. can be constructed.

As described above, according to the fire-resistant member 1 according to the present invention, the foam 3 is arranged in the innermost layer, and the foam 3 is easily crushed according to the outer diameter of the elongated body 13. The member 1 can be applied to elongated bodies 13 having a plurality of diameters, and the refractory member 1 can be reliably adhered to the outer circumference of the elongated body 13 . Moreover, since the elongated body 13 and the foam 3 do not come into direct contact with each other, damage to the foam 3 can be suppressed when the fireproof member 1 is moved along the elongated body 13 .

In addition, when the fireproof member 1 is rolled into a cylindrical shape, the foam 3, the incombustible material 9, and the like are easily deformed in the axial direction, but by using the core material 5, the cylindrical shape can be maintained. . Therefore, it becomes easy to insert the fireproof member 1 into the through hole 17 .

In addition, by using a combustible member on the inner peripheral side of the thermal expansion member 7, the foam 3 and the core material 5 are burned out in the event of a fire, and the thermal expansion member 7 starts expanding in a short time. The expansion in the direction of the elongated body 13 is not hindered.

Next, a second embodiment will be described. FIG. 6 is a perspective view showing the metal fitting 21 for fireproof member. The fireproof member metal fitting 21 is a metal fitting used for the fireproof member 1 wound around the elongated body 13 . The fireproof member metal fitting 21 is integrally formed by bending a wire rod such as spring steel. The metal fittings 21 for fireproof members are processed by forming, for example.

The metal fitting 21 for a fireproof member is mainly composed of clip portions 23a and 23b, a positioning portion 25, fixing portions 27a and 27b, and the like. The clip portions 23a and 23b are portions for sandwiching the fireproof member 1. As shown in FIG. Normally, the clip portions 23a and 23b are open in one direction, and the fireproof member 1 can be inserted between the clip portions 23a and 23b from the opening side.

The positioning portion 25 is bent outward with respect to the direction in which the clip portions 23a and 23b are sandwiched (opposing direction). More specifically, the positioning portion 25 is formed on the opening side of the clip portions 23a and 23b, near the end portion of the metal fitting 21 for fireproof members, and is bent outward from the opening portions of the clip portions 23a and 23b. formed by

The fixing portions 27a and 27b are formed at the ends of the clip portions 23a and 23b, respectively. The fixing portion 27a is a portion bent in a convex shape toward the tip side, and the fixing portion 27b is formed in a substantially linear shape at a position facing the fixing portion 27a. The fixing portions 27a and 27b are portions that hold the fireproof member 1 in a state of being sandwiched between the clip portions 23a and 23b. More specifically, by closing the clip portions 23a and 23b and hooking the fixing portion 27a to the fixing portion 27b, the clip portions 23a and 23b are fixed in a closed state. Further, the closed state of the clip portions 23a and 23b is released by releasing the catching of the fixing portions 27a and 27b.

The shape of the metal fitting 21 for a fire-resistant member is not limited to the illustrated example, and other shapes may be used as long as the metal fitting 21 has the above-described function.

Next, a method for constructing a fire-resistant structure using the fire-resistant member metal fittings 21 and the fire-resistant member 1 will be described. FIG. 7(a) is a diagram showing a state in which the fire-resistant member 1 is wound around the outer periphery of the elongated body 13, as described above. As described above, both ends of the refractory member 1 overlap each other to form the wrap portion 15 .

Next, the refractory member 1 is rolled and the both ends are wrapped, and then the metal fittings 21 for the refractory member are inserted (arrow A in the figure). FIG. 7(b) is a diagram showing a state in which the metal fittings 21 for fireproof members are attached. At this time, the wrap portion 15 is sandwiched between the clip portions 23a and 23b so that the wrap portion 15 can be fixed. More specifically, the clip portion 23 b is inserted into the gap between the fireproof member 1 and the long body 13 , and the clip portion 23 a is arranged on the outer periphery of the wrap portion 15 . The sandwiched wrap portion 15 is slightly crushed by the clip portions 23a and 23b.

FIG. 8(a) is a conceptual side view showing a state in which the wrap portion 15 of the fire-resistant member 1 is sandwiched between metal fittings 21 for fire-resistant members. As described above, the wrap portion 15 of the fire-resistant member 1 is sandwiched between the clip portions 23a and 23b of the metal fitting 21 for fire-resistant member, so that the wrap portion 15 does not open. Moreover, since the wrap portion 15 is slightly crushed by the clip portions 23a and 23b, the thickness can be made slightly thinner.

Next, as shown in FIG. 8B, when the clip portions 23a and 23b are closed (arrow B in the drawing), the wrap portion 15 of the fireproof member 1 is further crushed. Further, as the clip portions 23a and 23b are closed, the clip portions 23a and 23b can be fixed by hooking the fixing portion 27a on the fixing portion 27b (arrow C in the drawing) as shown in FIG. 8(c). can. That is, the wrap portion 15 can be fixed in a crushed state.

Next, as shown in FIG. 9A, the fire-resistant member 1 with metal fittings 21 attached thereto is moved along the long body 13 in the direction of the through-hole 17 (arrow D in the figure). ). At this time, the positioning portion 25 is arranged facing away from the through hole 17 .

As shown in FIG. 9( b ), by moving the metal-fitted fireproof member 1 along the elongated body 13 until the positioning portion 25 contacts the surface of the partition portion 19 , the fireproof member 1 is placed inside the through hole 17 . A member 1 can be placed. That is, in a state in which the wrap portion 15 of the fire-resistant member 1 is sandwiched between the clip portions 23 a and 23 b of the metal fittings 21 for fire-resistant member 21 , the positioning portion 25 comes into contact with the surface of the partition portion 19 , and the fire-resistant member 1 with respect to the through hole 17 is positioned.

FIG. 10 is a conceptual front view showing a state in which the wrap portion 15 is sandwiched and crushed between the clip portions 23a and 23b and arranged inside the through hole 17. FIG. As described above, since the fire-resistant member 1 is thicker than the gap between the through-hole 17 and the elongated body 13, when inserting the fire-resistant member 1 into the through-hole 17, it is necessary to crush the fire-resistant member 1 during insertion. There is

On the other hand, since the refractory members 1 overlap each other, the lap portion 15 is a portion that is particularly thick. Therefore, the wrap portion 15 is the most difficult portion to insert into the through hole 17 . In this embodiment, since the fire-resistant member metal fitting 21 is used for the fire-resistant member 1, the wrap portion 15 is crushed and the insertability into the through-hole 17 can be improved. Further, since the metal fitting 21 for the fire-resistant member has rigidity, the metal fitting 21 for the fire-resistant member (positioning portion 25) can be inserted into the through-hole 17 simply by pushing the metal fitting 21 (positioning portion 25) in the through-hole direction without being crushed in the pushing direction. be able to.

Next, as shown in FIG. 11(a), after placing the fireproof member 1 with metal fittings in the through hole 17, the fixing portions 27a and 27b are released to open the clip portions 23a and 23b (see FIG. 11(a)). arrow E). As a result, the crushed wrap portion 15 is released.

FIG. 11(b) is a conceptual front view showing a state in which the crushing of the wrap portion 15 by the clip portions 23a and 23b is released. By releasing the clip portions 23a and 23b, the fireproof member 1 attempts to return to its original thickness due to the restoring force of the foam 3 and the noncombustible material 9. As shown in FIG. Therefore, the gap between the through-hole 17 and the long body 13 can be reliably filled with the fire-resistant member 1, and the fire-resistant member 1 can be brought into close contact with both.

According to the second embodiment, by using the metal fittings 21 for fire-resistant members, it is possible to obtain a metal-fitted fire-resistant member in which the wrap portion 15 is sandwiched between the clip portions 23a and 23b. According to such a refractory member with metal fittings, the wrap portion 15 is fixed by being sandwiched between the clip portions 23a and 23b, so that the wrap portion 15 will not open during work.

Moreover, since the wrap portion 15 can be crushed, it becomes easier to insert the fireproof member 1 into the through hole 17 . In addition, due to the rigidity of the metal fittings 21 for fire-resistant members, the fire-resistant members 1 are prevented from collapsing in the axial direction within the through-holes 17 , and the fire-resistant members 1 can be arranged within the predetermined range within the through-holes 17 . After insertion into the through-hole 17, the clips 23a and 23b are released to restore the refractory member 1 from being crushed and reliably fill the gap between the through-hole 17 and the elongated body 13. be able to.

Note that the fixing portions 27a and 27b are not necessarily required. For example, the clip portions 23a and 23b are released by releasing the fixing portion 23a after inserting the fireproof member 1 into the through-hole 17 while holding the fixing portion 23a closed with a finger. At this time, the convex shape of the fixing portion 23a functions as a knob for closing the clip portions 23a and 23b.

Further, the position of the fire-resistant member 1 with respect to the through-hole 17 can be easily determined by simply pushing the fire-resistant member 1 into the through-hole until the positioning portion 25 contacts the partition portion 19 outside the through-hole 17 . Therefore, the end position of the fire-resistant member 1 can be easily aligned with the through-hole 17, and stable construction quality can be ensured regardless of the operator.

Moreover, the metal fitting 21 for fireproof members is formed by bending a wire rod. Therefore, there is almost no shadow of the metal fittings 21 for the fire-resistant member 1, and the expansion of the thermal expansion member 7 inside is not hindered in the event of a fire or the like.

A metal fitting 21a for a fireproof member as shown in FIG. 12 can also be used. The fire-resistant member metal fitting 21a is substantially the same as the fire-resistant member metal fitting 21, but differs in that an insertion portion 29 is formed on the side of the fixing portion 27b and a bent portion 31 is formed in a portion of the clip portion 23a.

The insertion portion 29 is a portion bent forward in a convex shape on the side of the fixed portion 27b. That is, the insertion portion 29 has the same shape as the fixing portion 27a. When inserting the distal end of the fixing portion 27a into the lower portion of the fixing portion 27b, the insertion portion 29 serves as a portion that avoids interference with the fixing portion 27a.

Since the insertion portion 29 is formed on the side of the fixing portion 27b, it is formed at a position separated from the fixing portion 27a and the insertion portion 29 in plan view. For this reason, when inserting the fixing portion 27a into the insertion portion 29, the fixing portion 27a is guided to the insertion portion 29 while slightly shifting to the side. and return to the catch position. By doing so, it becomes easy to fix the fixing portions 27a and 27b.

Moreover, the bent portion 31 is a portion that protrudes toward the side of the clip portion 23a. Normally, when a wire is formed, the end of the wire after shape processing is cut, so it is desirable in terms of manufacturing that the cut portion is positioned so as not to overlap the wire of the product portion. Although it is necessary to protrude longer than 23b, forming the bent portion 31 makes it possible to obtain a more compact fireproof member metal fitting 21a.

In addition, by forming the bent portion 31 in a part of the clip portion 23a, when the clip portion 23a and the clip portion 23b sandwich the fireproof member 1, the starting point of deformation of the clip portion 23a becomes the vicinity of the bent portion 31. Therefore, it is possible to increase the rigidity of the clip portion 23a and increase the clipping force of the clip portions 23a and 23b. In this way, the metal fittings 21 a for fire-resistant members can be used in the same way as the metal fittings 21 for fire-resistant members.

Moreover, as a simpler structure, a metal fitting 21b for a fireproof member shown in FIG. 13 may be used. The refractory member fitting 21b is formed by bending a metal plate-like member, and a fixing portion or the like is not formed.

One end of the fire-resistant member fitting 21 b is bent to form the positioning portion 25 . The other end of the metal fitting 21b for a fire-resistant member is folded back in a U-shape opposite to the positioning portion 25, and portions facing each other become clip portions 23a and 23b. Note that the clip portion 23b is sufficiently short relative to the overall length of the metal fitting 21b for a fireproof member.

FIG. 14 is a diagram showing a fire-resistant structure 20b using metal fittings 21b for fire-resistant members. Since the distance between the clip portions 23a and 23b is fixed in the metal fitting 21b for a fire-resistant member, the sandwiched state of the fire-resistant member 1 cannot be released. For this reason, this portion is maintained in a crushed state by being sandwiched between the clip portions 23a and 23b. Since the refractory member 1 is not sandwiched in portions other than the clip portions 23a and 23b, the elastic restoring force of the refractory member 1 inside the through hole 17 adheres to the long body 13 and the inner surface of the through hole 17, thereby can fill in the gaps.

Even in this case, positioning of the fire-resistant member 1 is facilitated by the positioning portion 25 . Moreover, since a part of the wrap portion 15 can be fixed by the clip portions 23a and 23b, the opening of the wrap portion 15 can be suppressed. Moreover, since the wrap portion 15 on the distal end side to be inserted into the through hole 17 is crushed, the insertion work into the through hole 17 can be facilitated. As described above, if the fire-resistant member with metal fittings has at least the clip portions 23a and 23b for sandwiching the fire-resistant member 1 and the positioning portion 25, both effects can be obtained.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the technical scope of the present invention is not influenced by the above-described embodiments. It is obvious that a person skilled in the art can conceive various modifications or modifications within the scope of the technical idea described in the claims, and these are naturally within the technical scope of the present invention. be understood to belong to

Reference Signs List 1 …… Fireproof member 3 …… Foam body 5 …… Core material 7 …… Thermal expansion member 9 …… Incombustible material 11 …… Bag body 13 …… Long body 15 …… Wrap portion 17 Through holes 19 Separating portions 20, 20a, 20b Fire resistant structures 21, 21 a, 21 b Fire resistant member metal fittings 23 a, 23 b Clip portion 25 Positioning portion 27 a, 27b …… Fixed portion 29 …… Insertion portion 31 …… Bending portion

Claims (5)

A refractory member that is used by being wrapped around a long body,
an elastically deformable combustible foam;
a thermal expansion member laminated on the foam;
an elastically deformable incombustible material laminated on the thermal expansion member;
a bag that collectively covers the foam, the thermal expansion member, and the incombustible material;
and
A fire-resistant member , wherein a combustible core material is provided between the foam and the thermal expansion member. 2. The fire-resistant member according to claim 1 , further comprising metal fittings capable of sandwiching and fixing the positions where the fire-resistant member is rolled and both ends thereof are wrapped. A refractory member that is used by being wrapped around a long body,
an elastically deformable combustible foam;
a thermal expansion member laminated on the foam;
an elastically deformable incombustible material laminated on the thermal expansion member;
a bag that collectively covers the foam, the thermal expansion member, and the incombustible material;
and
A fire-resistant member characterized by comprising metal fittings that can be fixed by sandwiching a position where the fire-resistant member is rolled and both ends thereof are wrapped . The fireproof member according to any one of claims 1 to 3 is used,
The long body is inserted through the through hole formed in the partition,
A fire-resistant structure, wherein the fire-resistant member is wound around the elongated body inside the through-hole so that a gap between the elongated body and the inner surface of the through-hole is closed with the fire-resistant member. The fireproof member according to claim 2 or claim 3 is used,
The long body is inserted through the through hole formed in the partition,
Inside the through-hole, the fire-resistant member is wrapped around the elongated body so that the gap between the elongated body and the inner surface of the through-hole is closed with the fire-resistant member,
A fire-resistant structure, wherein a part of the metal fitting is in contact with the surface of the partition to position the fire-resistant member.

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