JP4950686B2 - Through-hole fire prevention member and through-hole fire prevention structure using the same - Google Patents

Description

  The present invention relates to an inner peripheral surface of a through-hole formed in a partition body, such as a through-hole formed in a partition body such as a wall or a floor, or a through-hole formed with a metal sleeve that is fixed to the partition body. A through-hole fire prevention member that is filled in a gap between the outer surface of a long body such as a cable inserted into the outer wall or that is disposed on the outer surface side of a partition corresponding to the gap, and uses the same The present invention relates to a through-hole fire prevention structure and a through-hole fire prevention method.

  As this type of through-hole fire-protection member, a heat-expandable fire-resistant putty material having a high degree of freedom of deformation was common, but fire-resistant putty material has a problem that it is difficult to perform construction work. A solid fire-proof block made of a fire-resistant material having flexibility and thermal expansion has been developed as a through-hole fire protection member that is relatively easier to fill than a material (see, for example, Patent Document 1 below). .

JP 2002-247735 A

  However, even in the case of the above-described fire protection block, it is present on the inner peripheral surface of the through hole or the outer surface of the elongated body to fill the gap between the inner peripheral surface of the through hole and the outer surface of the elongated body. Since a large number of relatively small refractory blocks must be arranged side by side so that a large unfilled space is not formed in the gap due to the hollows that are formed, workability such as ease of construction work and short construction time It was not enough in terms of

  The present invention has been made in view of the above circumstances, and the main problem is that a large unfilled space is formed in the gap between the inner peripheral surface of the through hole and the outer surface of the elongated body. It is in the point which provides the through-hole fire-protection member excellent in workability, suppressing effectively.

The gap between the inner peripheral surface of the through-hole formed in the partition and the outer surface of the long body inserted through the through-hole is filled, or disposed on the outer surface side of the partition corresponding to the gap. A through-hole fire prevention member,
Refractory thermal expansion protrusion consisting of refractory material having flexibility and thermal expansion properties, are Gun設to a substrate having flexibility.

According to the above configuration , even when a recess is present on the inner peripheral surface of the through-hole or the outer surface of the elongated body, the inner peripheral surface of the through-hole is in a state where the refractory thermal expansion protrusion group faces the recess. Simply fill the gap between the outer surface of the elongated body and the outer surface side of the partition corresponding to the gap, and the flexible fire-resistant thermal expansion protrusion group can be formed in the recess. Since it can be made to enter effectively, it can be made more excellent in workability than the above-described conventional member while effectively suppressing the formation of a large unfilled space in the gap.

  In addition, since the surface area of the refractory material can be ensured by configuring the refractory material having thermal expansibility as a group of refractory thermal expansion protrusions, the thermal expansion rate during a fire can be effectively improved. Thus, it is possible to effectively suppress the passage of flames and heat through the through holes in the event of a fire.

Wherein the substrate is composed of a material having a posture holding force for holding the member position.

According to the above-described configuration , a desired member posture (for example, the amount of penetration into the recesses present on the inner peripheral surface of the through hole or the outer surface of the elongated body and the expansion rate at the time of fire are moderate due to the posture holding force of the base material itself. Therefore, the desired member posture can be easily and reliably compared with the case where the member is held in the desired member posture using another member such as a restraining member. Can be held.

And is configured to be mounted to an outer surface of said elongate body by the posture holding force of the substrate.

According to the above configuration , prior to filling the gap between the inner peripheral surface of the through hole and the outer surface of the elongated body, or prior to disposing on the outer surface side of the partition corresponding to the gap, Since it can be attached to the outer surface of the long body, it is possible to confirm the required number of parts in advance and to prevent construction failures such as forgetting to fill the gap or forgetting to place it. It can be effectively and reliably suppressed.

  Further, the long body is operated in a state of being attached to the outer surface of the long body (that is, the long body is inserted into the through hole or the long body inserted into the through hole is inserted into the through hole. The gap between the inner peripheral surface of the through hole and the outer surface of the elongated body, or disposed on the outer surface side of the partition corresponding to the gap. Therefore, for example, the construction work can be simplified compared to the case where the holding work for the long body and the work for filling the gap or the arrangement work on the outer surface side of the partition corresponding to the gap are performed simultaneously. .

The portion where the refractory thermal expansion protrusion faces the outer surface of the long body in the mounting posture so as to allow a movement operation in the longitudinal direction of the long body in the mounting posture mounted on the outer surface of the long body are Gun設to.

  That is, if the refractory thermal expansion protrusions are made to face the outer surface of the elongated body in the mounting posture, the characteristics of the refractory thermal expansion protrusion group (flexibility, small contact area with the outer surface of the elongated body, etc.) Therefore, the movement operation in the longitudinal direction of the long body can be effectively permitted.

That is, according to the above configuration , since the necessary length of each of the front and rear portions sandwiching the through hole in the long body is determined depending on the application, the arrangement of the long body with respect to the through hole in the longitudinal direction of the long body is to some extent. On the other hand, by moving the longitudinal body in the longitudinal direction with the long body arranged at a predetermined position of the through hole, the gap between the inner peripheral surface of the through hole and the outer surface of the long body is determined. Since it can be filled or disposed on the outer surface side of the partition corresponding to the gap, for example, after filling the gap between the inner peripheral surface of the through hole and the outer surface of the long body, the long The construction work can be simplified compared to the case where the body is moved to adjust the lengths of the front and rear portions of the through hole in the long body.

The first characteristic configuration of the present invention is that the gap between the inner peripheral surface of the through hole formed in the partition and the outer surface of the elongated body inserted through the partition is filled, or the partition corresponding to the gap A through-hole fire prevention member disposed on the outer surface side of the body,
Fireproof thermal expansion protrusions made of a fireproof material having flexibility and thermal expansion are grouped on a flexible base material, and the fireproof thermal expansion protrusions are arranged around the axis of the base material. It is in the point arranged radially.

  According to the above-described characteristic configuration, the fireproof thermal expansion protrusion group is faced to the depression existing on the inner peripheral surface of the through hole or the outer surface of the elongated body without considering the directionality of the fireproof thermal expansion protrusion. , The gap between the inner peripheral surface of the through hole and the outer surface of the elongated body can be filled, or can be disposed on the outer surface side of the partition corresponding to the gap, A flexible refractory thermal expansion protrusion can be effectively inserted, whereby a large unfilled space is formed in the gap due to the depressions present on the inner peripheral surface of the through hole and the outer surface of the elongated body. While suppressing this more effectively, it can be made more excellent in workability.

The second feature configuration of the present invention is a configuration suitable for the implementation of the first feature configuration.
The base material is composed of a wire material that can be twisted and deformed, and the refractory thermal expansion protrusion is formed by forming a large number of cuts on the side of the sheet-like material,
By twisting the base material in a state where the base material is attached to the sheet-like material in a posture parallel to or substantially parallel to the side of the sheet-like material, the refractory thermal expansion projecting piece becomes the axis of the base material. It is in the point which is arranged radially around.

  According to the above characteristic configuration, for example, compared to the case where a structure in which the fireproof thermal expansion protrusions are radially arranged around the axis of the base material by integrally molding a resin material having fire resistance is less difficult to manufacture. Simplification and reduction in production cost can be effectively achieved.

The third characteristic configuration of the present invention is a configuration suitable for implementation of any of the first to second characteristic configurations,
The said base material exists in the point comprised by the length larger than the outer peripheral length of the said elongate body.

  According to the above-described characteristic configuration, the gap between the inner peripheral surface of the through hole and the outer surface of the elongated body is filled with the base material being curved, or arranged on the outer surface side of the partition corresponding to the gap. By providing, it is possible to substantially close the gap with a single member. Therefore, for example, the construction work can be simplified as compared with a case where the gap is substantially closed with a plurality of members.

The fourth characteristic configuration of the present invention relates to the through-hole fire prevention structure,
It is a through-hole fire prevention structure using the through-hole fire prevention member according to any one of claims 1 to 3 ,
In the state where the fireproof thermal expansion projecting piece protrudes to both the inner and outer sides in the through hole radial direction , the through hole fire prevention member is filled in the gap between the inner peripheral surface of the through hole and the outer surface of the elongated body. There is in point.

  According to the above-mentioned characteristic configuration, the flexible fire-resistant thermal expansion protrusion is effective for the depression existing on the inner circumferential surface of the through hole and / or the depression existing on the outer surface of the elongated body, or both. Therefore, it is possible to make a structure with a large unfilled space in the gap, and to ensure a large surface area of the refractory material by configuring the refractory material having thermal expansion as a group of refractory thermal expansion protrusions. Therefore, it can be structured to have a high thermal expansion rate in the event of a fire.

A through- hole fire prevention method using a through-hole fire prevention member,
After attaching the through-hole fire prevention member to a portion of the outer surface of the long body inserted through the through-hole and located outside the through-hole, the through-hole fire prevention member attached to the long body is long. By moving in the longitudinal direction of the long body along the outer surface of the long body, the through hole fire prevention member is filled in the gap between the inner peripheral surface of the through hole and the outer surface of the long body.

According to the above configuration , since the mounting is performed on the outer surface of the elongate body prior to filling the gap between the inner peripheral surface of the through hole and the outer surface of the elongate body, the necessary number of members is confirmed. Can be performed reliably in advance, and it is possible to effectively reduce defects such as changes in the process plan. Can be effectively and reliably suppressed.

  Then, by moving the through-hole fire-protection member attached to the long body in the longitudinal direction of the long body along the outer surface of the long body, the distance between the inner peripheral surface of the through-hole and the outer surface of the long body For example, when filling the gap between the inner peripheral surface of the through hole and the outer surface of the elongated body while holding the elongated body, the gap is filled with the through hole fire countermeasure member. In comparison, the construction work can be simplified.

The through-hole fire-protection member is mounted in a posture along the outer surface of the elongated body with respect to a portion located outside the through-hole on the outer surface of the elongated body inserted through the through-hole.

According to the above configuration , prior to filling the gap between the inner peripheral surface of the through hole and the outer surface of the elongated body, the through hole is inserted into the outer surface of the elongated body. Since the outer surface of the long body is mounted in a posture along the outer surface of the long body with respect to the portion located outside the through hole, the mounting work for mounting the through hole fire prevention member on the long body and the through hole fire prevention measures It is possible to simultaneously perform a posture changing work for changing the member to a posture along the outer surface of the long body, and to simplify the construction work compared to the case where the mounting work and the posture changing work are performed separately. it can.

  1 to 3, for example, as shown in FIG. 5A, a through hole formed with a through hole formed in a partition W such as a wall or a floor, or a metal sleeve that is fixed to the partition W. An annular gap S between the through hole H formed in the partition W such as a hole and the outer surface of the long body K such as a cable inserted through the hole, or a partition corresponding to the gap S 1 shows a substantially thin cylindrical through-hole fire prevention member T disposed on the outer surface side of W, and this through-hole fire prevention member T provides flexibility and thermal expansion to a flexible substrate 1. The refractory thermal expansion protrusions 2 made of a refractory material are grouped together.

  The through-hole fire prevention member T corresponds to the length L2 of the axis P (specifically, the length of the base material 1 (specifically, the length in the circumferential direction of the through-hole) so that the gap S can be substantially closed by a single member. ) Is configured to be slightly larger than the outer peripheral length of the long body K, and the radial length L1 perpendicular to the axis P is the maximum from the inner peripheral surface of the through hole H to the outer surface of the long body K. The dimension is slightly larger than the length Ls (see FIG. 5B).

  The base material 1 has an attitude holding force for maintaining the attitude of the through-hole fire prevention member T, and is a wire (an example of a wire) that is an example of a material that can be twisted around the base axis P. ), And can be mounted in a state in which the long body K is sandwiched with respect to the outer surface of the long body K by its posture holding force, and more specifically, the refractory thermal expansion facing the outer surface of the long body K Mounted in a state in which the movement operation in the longitudinal direction of the long body is allowed due to the characteristics of the projecting pieces 2 group (characteristics having an appropriate movement resistance due to flexibility and a small contact area with the outer surface of the long body K) It is configured to be possible.

  The refractory thermal expansion protrusion 2 is a plurality of refractory materials including an inorganic filler such as calcium carbonate, a thermal expansion base material, and a synthetic resin as an example of a refractory material having flexibility and thermal expansion. It is comprised from the fireproof thermal expansion sheet 2A (an example of a sheet-like material) of 1 sheet (3 sheets in this example).

  Specifically, as shown in FIG. 3, the refractory thermal expansion projecting piece 2 is formed by forming a large number of cuts 2a on both sides of the refractory thermal expansion sheet 2A toward the narrow base 2b at the center in the width direction. The base material 1 is attached to the base portion 2b of the fireproof thermal expansion sheet 2A in a posture substantially parallel to the side of the fireproof thermal expansion sheet 2A (specifically, the base material 1 is folded in a folded form). By twisting the base material 1 around the axis P in a state where the bases 2b of the plurality of fireproof thermal expansion sheets 2A are sandwiched from above and below, the refractory thermal expansion protrusions 2 are radially formed around the axis P of the base 1 Arranged.

  In other words, the through-hole fire-protecting device T is formed of the long body K of the flexible fireproof thermal expansion protrusions 2 group in a state where the clearance S is filled (see FIG. 5A). With the refractory thermal expansion protrusion 2 facing the outer surface bent, the refractory thermal expansion protrusion 2 facing the recess sc existing on the inner peripheral surface of the through hole H or the outer surface of the elongated body K is effective for the recess sc. Therefore, the formation of a large unfilled space in the gap S can be effectively prevented.

  In addition, by configuring the refractory material having thermal expansibility as the two groups of refractory thermal expansion protrusions, a large surface area of the refractory material can be secured, and the thermal expansion rate during a fire can be effectively improved.

  The notch dimension L3 of the notch 2a (that is, the projecting dimension of the refractory thermal expansion protrusion 2) is the maximum depth of the recess sc on the inner peripheral surface of the through hole H or the outer surface of the long body K in the gap S ( It is configured to be larger than the maximum radial direction length Lsc (see FIG. 5B).

  Examples of the thermally expandable substrate include expanded graphite, vermiculant, and alkali metal silicate.

Next, the usage method (construction method) of the through-hole fire prevention member T configured as described above will be described.
First, as shown in FIG. 4, the outer surface of the long body K inserted through the through hole H formed in the partition body W is along the outer surface of the long body K with respect to the portion located outside the through hole H. The through-hole fire-protection member T is mounted in such a manner that the elongated body K is sandwiched by being deformed into a posture.

  Therefore, at this time, the required number of members can be reliably confirmed, and forgetting to fill the gap S can be visually confirmed after construction.

  Then, by moving the through-hole fire-protection member T attached to the long body K to the through-hole H side in the longitudinal direction of the long body along the outer surface of the long body K, the inner circumference of the through-hole H The clearance between the surface and the outer surface of the elongated body K is filled with the through-hole fire-protection member T, and the refractory thermal expansion protrusion 2 of the through-hole fire-protection member T as shown in FIG. The inner peripheral surface of the through-hole H and the long length in a state of projecting to both the inner side (that is, the inner peripheral surface side of the through-hole H) and the outer side (that is, the outer surface side of the long body K). The through-hole fire prevention structure in which the through-hole fire prevention member T is filled in the gap S between the outer surface of the body K is configured.

  That is, in this construction method, for example, compared to the case where the through hole fire prevention member T is filled in the gap S between the inner peripheral surface of the through hole H and the outer surface of the long body K while holding the long body K, The through-hole fire protection member T can be filled in the gap S easily and in a short time.

  In addition, since the two groups of the refractory thermal expansion protrusions are arranged radially around the axis P of the base material 1, the directionality of the refractory thermal expansion protrusions 2 when the gap S is filled with the through-hole fire prevention member T. There is no need to consider (that is, the protruding direction).

[Other Embodiments]
(1) In the above-described embodiment, a cable or the like is shown as an example of the long body K inserted through the through hole H. However, for example, a pipe for air conditioning or water supply / drainage may be used.

(2) In the above-described embodiment, when the through-hole fire protection member T is filled in the gap S between the inner peripheral surface of the through-hole H formed in the partition body W and the outer surface of the long body K. However, it may be disposed on the outer surface side of the partition body W corresponding to the gap S, for example.

  As described above, when the through-hole fire prevention member T is disposed on the outer surface side of the partition body W corresponding to the gap S, for example, the outer surface of the through-hole fire prevention member T disposed on the outer surface side of the partition body W is It is also possible to employ a configuration in which a cover-like covering member such as a metal or resin that can be covered is disposed.

(3) In the above-described embodiment, a wire that is an example of a wire is shown as an example of the flexible base material 1. However, for example, a material such as a plate material may be used, and the composition thereof may be Various materials having flexibility such as resin, rubber, fiber, etc. can be adopted, and further, the same material as that of the refractory thermal expansion protrusion 2 can be formed integrally with the refractory thermal expansion protrusion 2. May be.

(4) The specific configuration such as the composition and shape of the refractory thermal expansion protrusion 2 is not limited to the configuration shown in the above-described embodiment, and various configuration changes can be made.

(5) In the above-described embodiment, the case where the refractory thermal expansion protrusions 2 are arranged radially around the axis of the base material 1 has been described as an example. It may be arranged in a direction.

  As described above, when the fireproof thermal expansion protrusion 2 is arranged in one direction or a plurality of directions to constitute the through-hole fire prevention member T, the fireproof thermal expansion protrusion 2 is inward or outward in the through-hole radial direction. You may comprise the through-hole fire-protection structure in which the said clearance gap S is filled with the through-hole fire-protection member T in the state which protrudes in one side.

(6) In the above-described embodiment, the case where the refractory thermal expansion protrusions 2 are grouped over the entire length of the base material 1 has been described as an example. Also good.

(7) The specific configuration in which the refractory thermal expansion protrusions 2 are arranged radially around the axis P of the base material 1 is not limited to the configuration shown in the above-described embodiment, and various configuration changes are possible.

(8) In the above-described embodiment, an example is shown in which the fire-resistant and thermally-expandable protruding piece 2 is composed of a plurality of fire-resistant and thermally-expandable sheets 2A that are examples of fire-resistant materials having flexibility and thermal expansion. However, you may comprise from the fireproof thermal expansion sheet 2A of 1 sheet.

(9) In the above-described embodiment, after attaching the through-hole fire prevention member T to the portion of the outer surface of the long body K inserted through the through-hole H and located outside the through-hole H, the long body K As an example, a method of filling the gap S with the through-hole fire prevention member T by moving the through-hole fire prevention member T in the longitudinal direction along the outer surface of the long body K is shown. However, for example, by moving the through-hole fire protection member T in a state of being attached to the long body K in the longitudinal direction of the long body along the outer surface of the long body K, the outer surface side of the partition body W corresponding to the gap S A method of disposing the through-hole fire-protection member T on the through-hole, and by moving the elongated body K with the through-hole fire-protection member T attached to the through-hole H side, the through-hole fire-protection member T is filled in the gap S The long body K in a state where the through hole fire prevention member T is attached to the through hole H It may take a method such as method of disposing the through-hole fire action member T to the outer surface side of the partition body W corresponding to the gap S by moving to the side.

(10) In the above-described embodiment, the example in which the axial core P direction length L2 of the through-hole fire prevention member T is configured with a slightly larger dimension than the outer peripheral length of the long body K is shown. For example, it may be configured with the same dimension as the outer peripheral length of the long body K, or may be configured with a dimension smaller than the outer peripheral length of the long body K.

(11) In the above-described embodiment, the radial length L1 of the through-hole fire protection member T is configured to be slightly larger than the maximum length Ls from the inner peripheral surface of the through-hole H to the outer surface of the long body K. However, the present invention is not limited to this, and various dimensions may be used.

(12) The through-hole fire prevention member structure using the through-hole fire prevention member T is not limited to the configuration shown in the above-described embodiment, and various modifications can be made. For example, the outer surface of the through-hole fire prevention member T A plate-shaped covering member such as a metal or a resin that can be coated may be provided.

Side view of through hole fire prevention member of the present invention II sectional view taken on line in FIG. The exploded perspective view of the through-hole fire prevention member of the present invention The explanatory perspective view which shows the usage method of the through-hole fire prevention member of this invention Explanatory sectional drawing which shows the through-hole fire-protection structure using the through-hole fire-protection member of this invention

Explanation of symbols

W division body H through-hole S clearance K elongate body T through-hole fire prevention member 1 base material 2 fireproof thermal expansion protrusion 2A fireproof thermal expansion sheet 2a notch L2 axial length (base length)
P base material shaft core

Claims (4)

The gap between the inner peripheral surface of the through-hole formed in the partition and the outer surface of the long body inserted through the through-hole is filled, or disposed on the outer surface side of the partition corresponding to the gap. A through-hole fire prevention member,
Fireproof thermal expansion protrusions made of a fireproof material having flexibility and thermal expansion are grouped on a flexible base material, and the fireproof thermal expansion protrusions are arranged around the axis of the base material. The through-hole fire prevention member arranged radially . The base material is composed of a wire material that can be twisted and deformed, and the refractory thermal expansion protrusion is formed by forming a large number of cuts on the side of the sheet-like material,
By twisting the base material in a state where the base material is attached to the sheet-like material in a posture parallel to or substantially parallel to the side of the sheet-like material, the refractory thermal expansion projecting piece becomes the axis of the base material. The through-hole fire prevention member according to claim 1, wherein the through-hole fire prevention member is arranged radially around the periphery . The through-hole fire-protection member according to claim 1 or 2 , wherein the base material is configured to have a length equal to or greater than an outer peripheral length of the elongated body . A through hole fire prevention structure using the through hole fire prevention member according to any one of claims 1 to 3,
In the state where the fireproof thermal expansion projecting piece protrudes to both the inner and outer sides in the through hole radial direction, the through hole fire prevention member is filled in the gap between the inner peripheral surface of the through hole and the outer surface of the elongated body. Through-hole fire prevention structure .

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