JP6057068B2 - Through-hole fire prevention structure and fireproof tape used therefor - Google Patents

Through-hole fire prevention structure and fireproof tape used therefor Download PDF

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JP6057068B2
JP6057068B2 JP2013004869A JP2013004869A JP6057068B2 JP 6057068 B2 JP6057068 B2 JP 6057068B2 JP 2013004869 A JP2013004869 A JP 2013004869A JP 2013004869 A JP2013004869 A JP 2013004869A JP 6057068 B2 JP6057068 B2 JP 6057068B2
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fireproof
tape
sleeve
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古賀　誠一
誠一 古賀
直樹 藤丸
直樹 藤丸
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Inaba Denki Sangyo Co Ltd
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本発明は、壁や床等の耐火構造体の貫通孔に貫設されている耐火スリーブの端部側の外周面と当該耐火スリーブに挿通されているケーブルや空調配管等の長尺体の外側面とにわたって、片面に粘着層を形成してある耐火テープを巻き付けて、前記耐火スリーブの内周面と長尺体の外側面との間を閉塞してある貫通孔防火措置構造及びそれに用いられる耐火テープに関する。   The present invention provides an outer peripheral surface on the end side of a refractory sleeve provided in a through hole of a refractory structure such as a wall or a floor, and an outside of a long body such as a cable or air conditioning pipe inserted through the refractory sleeve. A through-hole fire protection structure in which a fireproof tape having an adhesive layer formed on one side is wound around the side surface and the space between the inner peripheral surface of the fireproof sleeve and the outer surface of the elongated body is closed, and is used therefor Related to fireproof tape.

従来の貫通孔防火措置構造では、前記耐火テープとして、アルミガラスクロス等のテープ基材の片面に、ブチルゴムに黒鉛を含有させてなる熱膨脹材層を積層して、この熱膨脹材層の自己粘着性をもって前記粘着層を構成してある熱膨張性の耐火テープが使用されている。   In the conventional through-hole fire protection structure, as the fireproof tape, a thermal expansion material layer containing graphite in butyl rubber is laminated on one side of a tape base material such as an aluminum glass cloth, and the self-adhesiveness of this thermal expansion material layer A heat-expandable fireproof tape constituting the adhesive layer is used.

そして、耐火テープの熱膨脹材層の粘着力を利用して、耐火スリーブの端部側の外周面と長尺体の外側面とにわたって貼り付けるとともに、耐火テープにおける長尺体側の貼付け部位を針金により外方側から長尺体に縛り付けている（特許文献１，２参照）。   And using the adhesive force of the thermal expansion material layer of the refractory tape, while sticking over the outer peripheral surface of the end portion side of the refractory sleeve and the outer surface of the elongated body, the affixed portion of the elongated body side in the refractory tape with a wire It is tied to a long body from the outside (see Patent Documents 1 and 2).

国際公開第２００６／０５４５７２号International Publication No. 2006/054572 特開２００７−３１２５９９号公報JP 2007-31599 A

従来の貫通孔防火措置構造では、耐火スリーブの端部側の外周面と長尺体の外側面とにわたって巻き付けられる耐火テープの熱膨脹材層による粘着力が強く、且つ、長尺体側においては、耐火テープが針金によって長尺体に縛り付けられているため、地震等の外力に起因して長尺体に長手方向（特に、引抜き側）への移動力が作用したとき、長尺体の外側面と耐火テープとの接合力よりも弱い耐火テープと耐火テープとの間で剥離現象が発生し、耐火スリーブの内周面と長尺体の外側面との間の耐火閉塞機能が低下又は喪失する可能性があった。   In the conventional through-hole fire prevention structure, the adhesive strength of the thermal expansion material layer of the fireproof tape wound around the outer peripheral surface of the end of the fireproof sleeve and the outer surface of the long body is strong, and the fireproof on the long body side. Since the tape is bound to the long body by a wire, when the moving force in the longitudinal direction (especially the pulling side) acts on the long body due to an external force such as an earthquake, the outer surface of the long body Peeling phenomenon occurs between the refractory tape and the refractory tape, which is weaker than the bonding strength with the refractory tape, and the fire closure function between the inner peripheral surface of the refractory sleeve and the outer surface of the elongated body may be reduced or lost There was sex.

本発明は、上述の実状に鑑みて為されたものであって、その主たる課題は、地震等の外力に起因して長尺体に長手方向への移動力が作用しても、耐火スリーブの端部側の外周面と長尺体の外側面とにわたって巻き付けられる耐火テープの巻付け状態を極力維持して、所期の耐火閉塞機能を発揮することのできる貫通孔防火措置構造及びそれに用いられる有用な耐火テープを提供する点にある。   The present invention has been made in view of the above-described actual situation, and the main problem is that even if a moving force in the longitudinal direction acts on the long body due to an external force such as an earthquake, the fireproof sleeve A through-hole fire prevention structure capable of exhibiting the intended fireproof blocking function while maintaining the winding state of the fireproof tape wound around the outer peripheral surface of the end portion side and the outer surface of the elongated body as much as possible, and used for it It is in providing a useful fireproof tape.

本発明による第１の特徴構成は、耐火構造体の貫通孔に貫設されている耐火スリーブの端部側の外周面と当該耐火スリーブに挿通されている長尺体の外側面とにわたって、片面に粘着層を形成してある耐火テープを巻き付けて、前記耐火スリーブの内周面と長尺体の外側面との間を閉塞してある貫通孔防火措置構造であって、
前記耐火テープと前記長尺体の外側面との第１接合力を、当該耐火テープと耐火スリーブの端部側の外周面との第２接合力よりも小に構成してある点にある。 A first characteristic configuration according to the present invention includes a single-sided surface extending from an outer peripheral surface of an end portion side of a fireproof sleeve provided in a through hole of the fireproof structure and an outer surface of a long body inserted through the fireproof sleeve. A through-hole fire prevention structure in which a fireproof tape in which an adhesive layer is formed is wound around and the space between the inner peripheral surface of the fireproof sleeve and the outer surface of the elongated body is closed,
The first bonding force between the fireproof tape and the outer surface of the elongated body is configured to be smaller than the second bonding force between the fireproof tape and the outer peripheral surface on the end side of the fireproof sleeve.

上記構成によれば、地震等の外力に起因して長尺体に長手方向（特に、引抜き側）への移動力が作用したとき、耐火テープと耐火スリーブの端部側の外周面との第２接合力よりも小さな第１接合力に構成されている耐火テープと長尺体の外側面との間で剥離等の接合解除現象が発生し、耐火スリーブの端部側の外周面と耐火テープとの巻付け状態を維持又は略維持したまま、この耐火テープに対して長尺体のみが移動することになる。   According to the above configuration, when a moving force in the longitudinal direction (particularly on the pulling side) acts on the long body due to an external force such as an earthquake, the first of the outer peripheral surface on the end side of the fireproof tape and the fireproof sleeve Bonding phenomenon such as peeling occurs between the fireproof tape configured to have a first joining force smaller than two joining forces and the outer surface of the long body, and the outer peripheral surface on the end side of the fireproof sleeve and the fireproof tape Only the long body moves with respect to the fireproof tape while maintaining or substantially maintaining the winding state.

したがって、地震等の外力に起因して長尺体に長手方向への移動力が作用しても、耐火テープと長尺体との相対移動によって耐火テープの施工当初の巻付け状態を維持し易くなり、耐火テープによる所期の耐火閉塞機能を発揮させることができる。   Therefore, even if a moving force in the longitudinal direction acts on the long body due to an external force such as an earthquake, it is easy to maintain the initial winding state of the fireproof tape by the relative movement of the fireproof tape and the long body. Thus, the desired fireproof blocking function by the fireproof tape can be exhibited.

本発明による第２の特徴構成は、前記第１接合力を前記第２接合力よりも弱める接合力減少手段により、前記第１接合力を前記第２接合力よりも小に構成してある点にある。   According to a second characteristic configuration of the present invention, the first bonding force is configured to be smaller than the second bonding force by a bonding force reducing unit that weakens the first bonding force than the second bonding force. It is in.

耐火テープと長尺体の外側面との間で剥離等の接合解除現象を生じさせるにあたって、例えば、耐火テープと耐火スリーブの端部側の外周面との第２接合力を、耐火テープと長尺体の外側面との第１接合力よりも強めることが考えられるが、この場合では、耐火テープと長尺体の外側面との当初の第１接合力が維持されているため、この第１接合力に抗して耐火テープと長尺体の外側面とを接合解除するための接合解除力が大きくなる。
しかし、本発明では、接合力減少手段によって、接合解除対象の耐火テープと長尺体のこの第１接合力に抗して耐火テープと長尺体の外側面とを接合解除するための接合解除力が外側面との第１接合力自体を減少するから、この第１接合力に抗して耐火テープと長尺体の外側面とを接合解除するための接合解除力が小さくなり、長尺体に作用する小さな外力でも接合解除現象を良好に生じさせることができる。 In order to cause a joint release phenomenon such as peeling between the fireproof tape and the outer surface of the long body, for example, the second joining force between the fireproof tape and the outer peripheral surface of the end of the fireproof sleeve is set to It is conceivable that the first bonding force is stronger than the first bonding force with the outer surface of the scale, but in this case, the initial first bonding force between the refractory tape and the outer surface of the long member is maintained. The joining release force for releasing the joining of the fireproof tape and the outer surface of the long body against one joining force is increased.
However, in the present invention, the joining release for releasing the joining of the refractory tape and the outer surface of the elongated body against the first joining force of the refractory tape to be joined and the elongated body by the joining force reducing means. Since the force reduces the first bonding force itself with the outer surface, the bonding releasing force for releasing the bonding between the fireproof tape and the outer surface of the elongated body is reduced against the first bonding force. Even with a small external force acting on the body, the joint release phenomenon can be satisfactorily generated.

それ故に、地震等の外力に起因して長尺体に長手方向への移動力が作用したとき、耐火テープと長尺体の外側面との間での剥離等の接合解除現象がスムーズになり、耐火テープの施工当初の巻付け状態をより維持し易くなり、耐火テープによる所期の耐火閉塞機能を発揮させることができる。   Therefore, when a moving force in the longitudinal direction is applied to the long body due to an external force such as an earthquake, the debonding phenomenon such as peeling between the fireproof tape and the outer surface of the long body becomes smooth. In addition, it becomes easier to maintain the initial winding state of the fireproof tape, and the desired fireproof blocking function by the fireproof tape can be exhibited.

本発明による第３の特徴構成は、前記接合力減少手段が、前記耐火テープの粘着層における長尺体の外側面に対応する貼付け領域に貼り付けた可撓性の接合阻止シートから構成されている点にある。   According to a third characteristic configuration of the present invention, the bonding force reducing means includes a flexible bonding prevention sheet that is bonded to a bonding region corresponding to an outer surface of the long body in the adhesive layer of the fireproof tape. There is in point.

上記構成によれば、前記耐火テープの粘着層における長尺体の外側面に対応する貼付け領域を可撓性の接合阻止シートで被覆することによって、耐火テープの巻付け操作性を良好な状態に維持しながらも、耐火テープにおける長尺体の貼付け領域での接合力を低下又は喪失させることができるから、地震等の外力に起因して長尺体に長手方向への移動力が作用しても、耐火テープと長尺体との相対移動によって耐火テープの施工当初の巻付け状態を維持又は略維持することができる。   According to the above configuration, the wrapping operability of the refractory tape is made good by covering the affixing region corresponding to the outer side surface of the elongated body in the adhesive layer of the refractory tape with the flexible bonding prevention sheet. While maintaining it, it is possible to reduce or lose the bonding force in the sticking area of the long body in the fireproof tape, so that the moving force in the longitudinal direction acts on the long body due to external forces such as earthquakes. In addition, the initial winding state of the refractory tape can be maintained or substantially maintained by the relative movement of the refractory tape and the elongated body.

したがって、耐火テープの粘着層における長尺体の外側面に対応する貼付け領域に可撓性の接合阻止シートを貼り付けるだけの簡単且つ経済的な改良をもって、耐火テープによる所期の耐火閉塞機能を発揮させることができる。   Therefore, with the simple and economical improvement of simply attaching a flexible bonding prevention sheet to the application area corresponding to the outer surface of the long body in the adhesive layer of the fireproof tape, the desired fireproof closure function by the fireproof tape is achieved. It can be demonstrated.

本発明による第４の特徴構成は、前記接合力減少手段が、長尺体の外側面における少なくとも前記耐火テープの貼付け領域に対して当該長尺体との相対移動を許容する状態で外装された接合阻止筒体から構成されている点にある。   According to a fourth characteristic configuration of the present invention, the joining force reducing means is externally mounted in a state that allows relative movement with respect to at least the refractory tape application region on the outer surface of the long body. It is in the point comprised from the joining prevention cylinder.

上記構成によれば、長尺体の外側面における少なくとも耐火テープの貼付け領域に可撓性の接合阻止筒体を外装することにより、耐火スリーブの端部側の外周面と長尺体の外側面とにわたって耐火テープを巻き付ける際、この耐火テープの粘着層が長尺体に外装された接合阻止筒体の外面に貼り付き、耐火テープにおける長尺体の貼付け領域での粘着力を低下又は喪失させることができるから、地震等の外力に起因して長尺体に長手方向への移動力が作用しても、接合阻止筒体と長尺体との相対移動によって耐火テープの施工当初の巻付け状態を維持することができる。   According to the above configuration, the outer peripheral surface on the end side of the refractory sleeve and the outer surface of the elongated body are provided by sheathing the flexible joint-blocking cylindrical body at least in the region where the refractory tape is applied on the outer surface of the elongated body. When the refractory tape is wound around, the adhesive layer of the refractory tape is attached to the outer surface of the joining blocking cylinder covered with the long body, thereby reducing or losing the adhesive strength in the sticking area of the long body on the refractory tape. Therefore, even if a moving force in the longitudinal direction is applied to the long body due to an external force such as an earthquake, the wrapping of the refractory tape at the beginning of construction is performed by the relative movement of the joint blocking cylinder and the long body. The state can be maintained.

したがって、長尺体の外側面における少なくとも耐火テープの貼り付け領域に接合阻止筒体を外装するだけの簡単且つ経済的な改良をもって、耐火テープによる所期の耐火閉塞機能を発揮することができる。   Therefore, the desired fire-resistant closing function by the fire-resistant tape can be exhibited with a simple and economical improvement in which at least the joining-preventing cylinder is externally mounted on the fire-resistant tape attachment region on the outer surface of the long body.

本発明による第５の特徴構成は、耐火構造体の貫通孔に貫設されている耐火スリーブの端部側の外周面と当該耐火スリーブに挿通されている長尺体の外側面とにわたって耐火テープを巻き付けて、前記耐火スリーブの内周面と長尺体の外側面との間を閉塞してある貫通孔防火措置構造であって、
前記耐火テープの貼付け面のうち、前記耐火スリーブの端部側の外周面に対する貼付け領域には粘着層が形成され、前記長尺体の外側面に対する貼付け領域には非接着面が形成されている点にある。 According to a fifth feature of the present invention, there is provided a refractory tape extending over the outer peripheral surface of the end portion of the refractory sleeve penetrating the through hole of the refractory structure and the outer surface of the elongated member inserted through the refractory sleeve. Is a through-hole fire prevention structure in which the space between the inner peripheral surface of the fireproof sleeve and the outer surface of the elongated body is closed,
An adhesive layer is formed in the pasting area of the fireproof tape on the outer peripheral surface on the end side of the fireproof sleeve, and a non-adhesive surface is formed in the pasting area on the outer surface of the long body. In the point.

上記構成によれば、耐火スリーブの端部側の外周面と長尺体の外側面とにわたって耐火テープを巻き付けたとき、耐火スリーブの端部側の外周面に対しては耐火テープの粘着層が接着するものの、長尺体の外側面に対する貼付け領域には非接着面が形成されているため、耐火テープにおける長尺体の貼付け領域での接着力を低下又は喪失させることができ、地震等の外力に起因して長尺体に長手方向への移動力が作用しても、耐火テープと長尺体との相対移動によって耐火テープの施工当初の巻付け状態を維持又は略維持することができる。   According to the above configuration, when the fireproof tape is wound over the outer peripheral surface of the end portion side of the fireproof sleeve and the outer surface of the elongated body, the adhesive layer of the fireproof tape is formed on the outer peripheral surface of the end portion side of the fireproof sleeve. Although bonded, a non-adhesive surface is formed on the outer surface of the long body, so the adhesive strength of the long tape on the fireproof tape can be reduced or lost. Even if a moving force in the longitudinal direction acts on the long body due to the external force, the initial winding state of the fireproof tape can be maintained or substantially maintained by the relative movement of the fireproof tape and the long body. .

したがって、地震等の外力に起因して長尺体に長手方向への移動力が作用しても、耐火テープと長尺体との相対移動によって耐火テープの巻付け状態を維持し易くなり、耐火テープによる所期の耐火閉塞機能を発揮させることができる。   Therefore, even if a moving force in the longitudinal direction is applied to the long body due to an external force such as an earthquake, the refractory tape and the long body can easily maintain the winding state of the fireproof tape due to the relative movement between the fireproof tape and the long body. The desired fire-resistant plugging function can be achieved with the tape.

本発明による第６の特徴構成は、上記第３の特徴構成に記載の貫通孔防火措置構造に用いられる前記耐火テープであって、前記粘着層における前記長尺体の外側面に対応する貼付け領域には、前記接合力減少手段を構成する可撓性の前記接合阻止シートが貼り付けられている点にある。   6th characteristic structure by this invention is the said fireproof tape used for the through-hole fire-protection structure as described in said 3rd characteristic structure, Comprising: The sticking area | region corresponding to the outer surface of the said elongate body in the said adhesion layer Is that the flexible bonding prevention sheet constituting the bonding force reducing means is affixed.

上記構成によれば、前記耐火テープの粘着層における長尺体の外側面に対応する貼付け領域を可撓性の接合阻止シートで被覆することによって、耐火テープの巻付け操作性を良好な状態に維持しながらも、耐火テープにおける長尺体の貼付け領域での接着力を低下又は喪失させることができるから、地震等の外力に起因して長尺体に長手方向の移動力が作用しても、耐火テープと長尺体との相対移動によって耐火テープの施工当初の巻付け状態を維持又は略維持することができる。   According to the above configuration, the wrapping operability of the refractory tape is made good by covering the affixing region corresponding to the outer side surface of the elongated body in the adhesive layer of the refractory tape with the flexible bonding prevention sheet. While maintaining, it is possible to reduce or lose the adhesive force in the sticking area of the long body in the fireproof tape, so even if a longitudinal moving force acts on the long body due to an external force such as an earthquake The initial winding state of the fireproof tape can be maintained or substantially maintained by the relative movement of the fireproof tape and the long body.

したがって、耐火テープの粘着層における長尺体の外側面に対応する貼付け領域に可撓性の接着阻止シートを貼り付けるだけの簡単且つ経済的な改良をもって、耐火テープによる所期の耐火閉塞機能を発揮させることができる。   Therefore, with the simple and economical improvement of simply attaching a flexible adhesion prevention sheet to the affixing area corresponding to the outer surface of the long body in the adhesive layer of the refractory tape, the desired fireproof clogging function by the refractory tape is achieved. It can be demonstrated.

本発明による第７の特徴構成は、上記第５の特徴構成に記載の貫通孔防火措置構造に用いられる前記耐火テープであって、テープ基材の貼付け面のうち、前記耐火スリーブの端部側の外周面に対する貼付け領域には粘着層が形成され、前記長尺体の外側面に対する貼付け領域には非接着面が形成されている点にある。   7th characteristic structure by this invention is the said fireproof tape used for the through-hole fire-protection structure as described in said 5th characteristic structure, Comprising: The edge part side of the said fireproof sleeve among the sticking surfaces of a tape base material An adhesive layer is formed in the pasting area with respect to the outer peripheral surface of the sheet, and a non-adhesive surface is formed in the pasting area with respect to the outer surface of the elongated body.

上記構成によれば、耐火スリーブの端部側の外周面と長尺体の外側面とにわたって耐火テープを巻き付けたとき、耐火スリーブの端部側の外周面に対しては耐火テープの粘着層が接着するものの、長尺体の外側面に対する貼付け領域には非接着面が形成されているため、耐火テープにおける長尺体の貼付け領域での接着力を低下又は喪失させることができ、地震等の外力に起因して長尺体に長手方向の移動力が作用しても、耐火テープと長尺体との相対移動によって耐火テープの施工当初の巻付け状態を維持又は略維持することができる。   According to the above configuration, when the fireproof tape is wound over the outer peripheral surface of the end portion side of the fireproof sleeve and the outer surface of the elongated body, the adhesive layer of the fireproof tape is formed on the outer peripheral surface of the end portion side of the fireproof sleeve. Although bonded, a non-adhesive surface is formed on the outer surface of the long body, so the adhesive strength of the long tape on the fireproof tape can be reduced or lost. Even if a moving force in the longitudinal direction acts on the long body due to the external force, the initial winding state of the fireproof tape can be maintained or substantially maintained by the relative movement of the fireproof tape and the long body.

したがって、耐火テープにおける長尺体の外側面に対する貼付け領域を非接着面に形成するだけの簡単且つ経済的な改良をもって、耐火テープによる所期の耐火閉塞機能を発揮させることができる。   Therefore, the desired fire-resistant closing function by the fire-resistant tape can be exhibited with a simple and economical improvement in which the non-adhesive surface is affixed to the outer surface of the long body in the fire-resistant tape.

本発明の第１実施形態の貫通孔防火措置構造の施工状態を示す破断斜視図The fracture | rupture perspective view which shows the construction state of the through-hole fire prevention structure of 1st Embodiment of this invention 第１実施形態の貫通孔防火措置構造の施工状態を示す縦断面図The longitudinal cross-sectional view which shows the construction state of the through-hole fire prevention structure of 1st Embodiment 第１実施形態の耐火テープの拡大断面図Expanded sectional view of the fireproof tape of the first embodiment 第１実施形態の貫通孔防火措置構造の施工工程図Construction process diagram of the through hole fire prevention structure of the first embodiment 本発明の第２実施形態の貫通孔防火措置構造の施工工程図Construction process diagram of through-hole fire prevention structure of second embodiment of the present invention 本発明の第３実施形態の貫通孔防火措置構造の縦断面図The longitudinal cross-sectional view of the through-hole fire prevention measure structure of 3rd Embodiment of this invention 本発明の第４実施形態の貫通孔防火措置構造の縦断面図The longitudinal cross-sectional view of the through-hole fire prevention structure of 4th Embodiment of this invention

〔第１実施形態〕
図１〜図４に示す貫通孔防火措置構造では、耐火構造体（防火区画体）の一例である鉄筋コンクリート壁１に貫通形成されている貫通孔２に、ケーブルや空調配管等のケーブル・配管類（長尺体の一例）３を挿通するための鋼製電線管等の耐火スリーブ４が、それの両端部が外方に突出する状態で貫設され、この耐火スリーブ４の外周面と貫通孔２の内周面との間には、モルタル等の耐火性の充填材５が充填されている。 [First Embodiment]
In the through-hole fire prevention structure shown in FIGS. 1 to 4, cables and piping such as cables and air-conditioning pipes are formed in the through-holes 2 formed through the reinforced concrete wall 1 which is an example of a fire-resistant structure (fire-proof compartment). (An example of a long body) A refractory sleeve 4 such as a steel conduit for inserting 3 is inserted in a state where both ends of the refractory sleeve protrude outward, and an outer peripheral surface of the refractory sleeve 4 and a through hole Between the two inner peripheral surfaces, a refractory filler 5 such as mortar is filled.

また、耐火スリーブ４の両端部には、ケーブル・配管類３を保護するための合成樹脂製又は金属製のブッシング６が嵌合固定され、一方のブッシング６の外周面６ａとこれが嵌合固定されている側の耐火スリーブ４の端部から導出されるケーブル・配管類３の外側面とにわたって、自己粘着性のある熱膨張性耐火層７Ａを片面に形成してある耐火テープ７が巻き付けられ、この耐火テープ７によって耐火スリーブ４の内周面とケーブル・配管類３の外側面との間が閉塞されている。   A synthetic resin or metal bushing 6 for protecting the cable / piping 3 is fitted and fixed to both ends of the fireproof sleeve 4, and this is fitted and fixed to the outer peripheral surface 6 a of one bushing 6. A fire-resistant tape 7 having a self-adhesive thermally expandable fire-resistant layer 7A formed on one side is wound around the outer surface of the cable / piping 3 led out from the end of the fire-resistant sleeve 4 on the side being The fireproof tape 7 blocks the inner peripheral surface of the fireproof sleeve 4 and the outer surface of the cable / piping 3.

各ブッシング６は、耐火スリーブ４の外周面の端部に外嵌される外嵌筒部６Ａと、耐火スリーブ４の内周面の端部に内嵌される内嵌筒部６Ｂ、及び、これら両者６Ａ，６Ｂを耐火スリーブ４の端面を迂回する状態で繋ぐ繋ぎ部６Ｃとからなり、内嵌筒部６Ｂが外嵌筒部６Ａよりも長尺に構成されている。   Each bushing 6 includes an external fitting cylinder portion 6A that is externally fitted to an end portion of the outer peripheral surface of the fireproof sleeve 4, an internal fitting cylinder portion 6B that is internally fitted to an end portion of the inner peripheral surface of the fireproof sleeve 4, and these The connecting part 6C connects both the parts 6A and 6B so as to bypass the end face of the fireproof sleeve 4, and the inner fitting cylinder part 6B is configured to be longer than the outer fitting cylinder part 6A.

耐火テープ７は、アルミニウム箔をテープ基材７Ｂとして、その片面に、ブチルゴムを主成分とする樹脂と熱膨張性黒鉛及び無機充填材とを含有する樹脂組成物からなる自己粘着性の熱膨張性耐火層７Ａを形成してあり、この熱膨張性耐火層７Ａをもって粘着層が形成されている。   The refractory tape 7 has a self-adhesive thermal expansibility comprising a resin composition containing a resin mainly composed of butyl rubber, thermal expansive graphite and an inorganic filler on one surface of an aluminum foil as a tape base material 7B. A fire-resistant layer 7A is formed, and an adhesive layer is formed with this thermally expandable fire-resistant layer 7A.

耐火テープ７の熱膨張性耐火層７Ａの表面をもって構成される粘着面７ａは、耐火スリーブ４の一端部側の外周面を構成するブッシング６の外嵌筒部６Ａの外周面６ａに貼付けられる第１貼付け領域Ｗ１と、ブッシング６の繋ぎ部６Ｃの外端面６ｂからケーブル・配管類３の外側面までの部位に貼付けられる第２貼付け領域Ｗ２、及び、ケーブル・配管類３の外側面に貼付けられる第３貼付け領域Ｗ３とからなり、そのうち、第３貼付け領域Ｗ３には、少なくともケーブル・配管類３の外側面と接触する内側面が低摩擦係数の平滑面に形成してある樹脂製シートや樹脂製フイルム、紙等の可撓性の接合阻止シート（接着阻止シート）８が貼り付けられている。   The adhesive surface 7a constituted by the surface of the heat-expandable fire-resistant layer 7A of the fire-resistant tape 7 is affixed to the outer peripheral surface 6a of the outer fitting cylinder portion 6A of the bushing 6 constituting the outer peripheral surface on one end side of the fire-resistant sleeve 4. 1 affixed to the affixed area W1 and the second affixed area W2 that is affixed to the part from the outer end surface 6b of the connecting portion 6C of the bushing 6 to the outer surface of the cable / piping 3 and the affixed to the outer surface of the cable / piping 3 Resin sheet | seat and resin which consist of the 3rd sticking area | region W3 and the inner side surface which contacts the outer side face of the cable and piping 3 at least in the 3rd sticking area | region W3 is formed in the smooth surface of a low friction coefficient A flexible bonding prevention sheet (adhesion prevention sheet) 8 such as a film or paper is attached.

耐火テープ７の粘着面７ａの第３貼付け領域Ｗ３に貼り付けられた接合阻止シート８により、耐火テープ７とケーブル・配管類３の外側面との第１接合力（接着力）を、当該耐火テープ７と耐火スリーブ４のブッシング６の外周面との第２接合力（接着力）よりも弱める接合力減少手段Ａが構成されている。
この接合力減少手段Ａにより、耐火テープ７とケーブル・配管類３の外側面との第１接合力が、当該耐火テープ７と耐火スリーブ４のブッシング６の外周面との第２接合力よりも小に構成されている。 The first bonding force (adhesive force) between the refractory tape 7 and the outer surface of the cable / pipe 3 is applied to the refractory tape 8 by the bonding prevention sheet 8 bonded to the third bonding region W3 of the adhesive surface 7a of the refractory tape 7. A joining force reducing means A is configured to weaken the second joining force (adhesive force) between the tape 7 and the outer peripheral surface of the bushing 6 of the fireproof sleeve 4.
By this joining force reducing means A, the first joining force between the fireproof tape 7 and the outer surface of the cable / piping 3 is greater than the second joining force between the fireproof tape 7 and the outer peripheral surface of the bushing 6 of the fireproof sleeve 4. It is composed of small.

接合阻止シート８が耐火テープ７の粘着面７ａにおける第３貼付け領域Ｗ３の全域に貼付けられているため、ケーブル・配管類３の外側面に対する粘着力（接着力）が接合阻止シート８に奪われて喪失している。   Since the bonding prevention sheet 8 is affixed to the entire area of the third affixing region W3 on the adhesive surface 7a of the fireproof tape 7, the adhesion prevention (adhesive force) to the outer surface of the cable / piping 3 is taken away by the bonding prevention sheet 8. Lost.

しかも、この接合阻止シート８におけるケーブル・配管類３との接触面である内側面は低摩擦係数の平滑面に形成されているため、地震等の外力に起因してケーブル・配管類３に長手方向（引抜き側又は押込み側）への移動力が作用したとき、耐火スリーブ４の外周面と耐火テープ７との巻付け状態を施工当初の状態に維持又は略維持したまま、この耐火テープ７に対してケーブル・配管類３のみが移動することになる。   Moreover, since the inner surface, which is the contact surface with the cable / piping 3 in the bonding prevention sheet 8, is formed as a smooth surface with a low coefficient of friction, the cable / piping 3 is elongated by an external force such as an earthquake. When a moving force in the direction (drawing side or pushing side) is applied, the wrapping state between the outer peripheral surface of the refractory sleeve 4 and the refractory tape 7 is maintained or substantially maintained at the initial state of construction, On the other hand, only the cable / piping 3 moves.

したがって、地震等の外力に起因してケーブル・配管類３に長手方向への移動力が作用しても、耐火テープ７とケーブル・配管類３との相対移動によって耐火テープ７の巻付け状態を施工当初の巻付け状態に維持し易くなり、耐火テープ７による所期の耐火閉塞機能を発揮させることができる。   Therefore, even if a moving force in the longitudinal direction acts on the cable / pipe 3 due to an external force such as an earthquake, the refractory tape 7 is wound by the relative movement between the fire-resistant tape 7 and the cable / pipe 3. It becomes easy to maintain the wound state at the beginning of construction, and the desired fire-resistant closing function by the fire-resistant tape 7 can be exhibited.

前記耐火テープ７のテープ基材７Ｂにおける第３貼付け領域Ｗ３に対応する部位には、当該耐火テープ７をケーブル・配管類３の外側面に縛り着ける緊締具の一例である針金又は被覆針金９が設けられている。   A wire or a covering wire 9 which is an example of a fastening tool for binding the fireproof tape 7 to the outer surface of the cable / piping 3 is provided at a portion corresponding to the third pasting region W3 of the tape base material 7B of the fireproof tape 7. Is provided.

この針金又は被覆針金９の縛り付けによる接合力（第１接合力の一部を構成）は、耐火テープ７の粘着面７ａと耐火スリーブ４のブッシング６の外周面との第２接合力（接着力）よりも小に設定してあり、地震等の外力に起因してケーブル・配管類３に長手方向への移動力が作用したとき、耐火スリーブ４の外周面と耐火テープ７との施工当初の巻付け状態を維持又は略維持したまま、この耐火テープ７に対してケーブル・配管類３のみが移動することを許容することになる。   The bonding force (constituting a part of the first bonding force) by binding the wire or the covering wire 9 is the second bonding force (adhesive force) between the adhesive surface 7a of the fireproof tape 7 and the outer peripheral surface of the bushing 6 of the fireproof sleeve 4. ) And when the cable / pipe 3 is moved in the longitudinal direction due to an external force such as an earthquake, the outer peripheral surface of the fireproof sleeve 4 and the fireproof tape 7 at the beginning of construction While the winding state is maintained or substantially maintained, only the cable / pipe 3 is allowed to move relative to the fireproof tape 7.

尚、上述の第１実施形態では、耐火スリーブ４の端部に嵌合固定されて一体化されている付属部材の一例であるブッシング６と、それから導出されるケーブル・配管類３の外側面とにわたって耐火テープ７を巻き付けたが、ブッシング６等の付属部材が存在しない場合には、耐火スリーブ４の外周面の端部とこれから導出されるケーブル・配管類３の外側面とにわたって耐火テープ７を巻き付けることになる。   In the first embodiment described above, the bushing 6 as an example of an accessory member fitted and fixed to the end of the fireproof sleeve 4 and the outer surface of the cable / pipe 3 derived therefrom is provided. When the fireproof tape 7 is wound around, but there is no accessory member such as the bushing 6, the fireproof tape 7 is stretched over the end portion of the outer peripheral surface of the fireproof sleeve 4 and the outer surface of the cable / piping 3 derived therefrom. Will be wrapped around.

また、上述の第１実施形態では、耐火スリーブ４の一方の端部に一体的に設けられているブッシング（付属部材）６とそれから導出されるケーブル・配管類３の外側面とにわたって耐火テープ７を巻回したが、耐火スリーブ４の両端部のブッシング（付属部材）６とそれから導出されるケーブル・配管類３の外側面とにわたってそれぞれ耐火テープ７を巻回してもよい。   In the first embodiment described above, the refractory tape 7 extends over the bushing (attachment member) 6 integrally provided at one end of the refractory sleeve 4 and the outer surface of the cable / piping 3 derived therefrom. However, the refractory tape 7 may be wound around the bushing (attachment member) 6 at both ends of the refractory sleeve 4 and the outer surface of the cable / pipe 3 derived therefrom.

さらに、上述の第１実施形態では、耐火テープ７の粘着面７ａにおける第３貼付け領域Ｗ３の全域に接合阻止シート８を貼り付けて、ケーブル・配管類３の外側面に対する粘着力（接着力）を無くしたが、耐火テープ７の粘着面７ａにおける第３貼付け領域Ｗ３の一部に接合阻止シート８を貼り付けて、地震等の外力に起因して配管類３に長手方向への移動力が作用したとき、耐火スリーブ４の外周面と耐火テープ７との施工当初の巻付け状態を維持又は略維持したまま、この耐火テープ７に対してケーブル・配管類３のみが移動し得る条件下において、ケーブル・配管類３の外側面に対する適度の接着力を有するように構成してもよい。   Further, in the first embodiment described above, the bonding prevention sheet 8 is attached to the entire area of the third attachment region W3 on the adhesive surface 7a of the fireproof tape 7, and the adhesive force (adhesive force) to the outer surface of the cable / pipe 3 is attached. However, the bonding prevention sheet 8 is pasted on a part of the third pasting area W3 on the adhesive surface 7a of the fireproof tape 7, and the pipe 3 has a moving force in the longitudinal direction due to an external force such as an earthquake. Under the conditions that only the cable / piping 3 can move with respect to the refractory tape 7 while maintaining or substantially maintaining the initial wrapping state of the outer peripheral surface of the refractory sleeve 4 and the refractory tape 7 when acted. The cable / pipe 3 may be configured to have an appropriate adhesive force to the outer surface.

この場合、耐火テープ７の粘着面７ａにおける第３貼付け領域Ｗ３の一部の粘着力（接着力）と、針金又は被覆針金９の縛り付け力とが第１接合力を構成することになる。   In this case, a part of the adhesive force (adhesive force) of the third application region W3 on the adhesive surface 7a of the fireproof tape 7 and the binding force of the wire or the covering wire 9 constitute the first bonding force.

〔第２実施形態〕
図５は、貫通孔防火措置構造の別の接合力減少手段Ａを示し、これは、ケーブル・配管類３の外側面における少なくとも耐火テープ７の貼付け領域に、当該ケーブル・配管類３との長手方向での相対移動を許容する状態で外装された接合阻止筒体１１から構成されている。 [Second Embodiment]
FIG. 5 shows another joining force reducing means A of the through-hole fire-protection structure, which is at least the longitudinal direction of the cable / pipe 3 in the affixing region of the fireproof tape 7 on the outer surface of the cable / pipe 3. It is comprised from the joining prevention cylinder 11 covered with the state which accept | permits the relative movement in a direction.

この接合阻止筒体１１は、ケーブル・配管類３に対して長手方向に摺動し得る状態で筒状に巻回装着可能な可撓性の樹脂製シートや樹脂製フイルム、紙等から構成されていて、耐火テープ７の貼付け前において、ケーブル・配管類３の外側面におけるテープ貼付け領域に筒状に巻付けて接着剤やテープ等の止着手段で筒状に保形する。   The joint blocking cylinder 11 is composed of a flexible resin sheet, a resin film, paper, or the like that can be wound around and attached to the cable / pipe 3 in a longitudinal direction. Before the refractory tape 7 is attached, it is wound around the tape application region on the outer surface of the cable / piping 3 in a cylindrical shape and is held in a cylindrical shape by a fastening means such as an adhesive or tape.

そして、耐火スリーブ４の端部のブッシング６とそれから導出されるケーブル・配管類３の外側面とにわたって耐火テープ７を巻き付けた際、この耐火テープ７の粘着面７ａにおける第３貼付け領域Ｗ３がケーブル・配管類３に装着されている接合阻止筒体１１の外周面に貼付けられるため、ケーブル・配管類３の外側面に対する粘着力（第１接合力）が接合阻止筒体１１に奪われて喪失している。   When the fireproof tape 7 is wound around the bushing 6 at the end of the fireproof sleeve 4 and the outer surface of the cable / piping 3 derived therefrom, the third affixing region W3 on the adhesive surface 7a of the fireproof tape 7 is the cable. -Since it is affixed to the outer peripheral surface of the joint prevention cylinder 11 attached to the piping 3, the adhesion force (first joining force) to the outer surface of the cable / piping 3 is lost to the joint prevention cylinder 11 and lost. doing.

しかも、この接合阻止筒体１１におけるケーブル・配管類３との接触面である内側面は低摩擦係数の平滑面に形成されているため、地震等の外力に起因してケーブル・配管類３に長手方向への移動力が作用したとき、耐火スリーブ４の外周面と耐火テープ７との施工当初の巻付け状態を維持又は略維持したまま、この耐火テープ７に対してケーブル・配管類３のみが移動することになる。   Moreover, since the inner side surface, which is the contact surface with the cable / pipe 3 in the joint blocking cylinder 11, is formed on a smooth surface with a low coefficient of friction, the cable / pipe 3 may be caused by an external force such as an earthquake. When a moving force in the longitudinal direction is applied, only the cable / pipe 3 is applied to the fireproof tape 7 while maintaining or substantially maintaining the initial winding state of the outer peripheral surface of the fireproof sleeve 4 and the fireproof tape 7. Will move.

尚、その他の構成は、第１実施形態で説明した構成と同一であるから、同一の構成箇所には、第１実施形態と同一の番号を付記してそれの説明は省略する。
また、上述の第２実施形態において、接合阻止筒体１１の長さは、耐火テープ７の粘着面７ａにおける第３貼付け領域Ｗ３の長さよりも大なる寸法又は小なる寸法に構成してもよい。 In addition, since the other structure is the same as the structure demonstrated in 1st Embodiment, the same number is attached to the same structure location as 1st Embodiment, and the description is abbreviate | omitted.
Moreover, in the above-mentioned 2nd Embodiment, you may comprise the length of the joining prevention cylinder 11 in the dimension larger or smaller than the length of the 3rd sticking area | region W3 in the adhesion surface 7a of the fireproof tape 7. FIG. .

接合阻止筒体１１の長さが耐火テープ７の粘着面７ａにおける第３貼付け領域Ｗ３の長さよりも小に構成されている場合には、耐火テープ７の粘着面７ａにおける第３貼付け領域Ｗ３の一部が、ケーブル・配管類３の外側面に対する粘着力（第１接合力）として機能することになる。   When the length of the bonding blocking cylinder 11 is configured to be smaller than the length of the third pasting region W3 on the adhesive surface 7a of the fireproof tape 7, the length of the third pasting region W3 on the adhesive surface 7a of the fireproof tape 7 is determined. A part functions as an adhesive force (first bonding force) to the outer surface of the cable / piping 3.

このようにケーブル・配管類３の外側面に対する適度の粘着力（第１接合力）を有する場合でも、地震等の外力に起因して配管類３に長手方向への移動力が作用したとき、耐火スリーブ４の外周面と耐火テープ７との施工当初の巻付け状態を維持又は略維持したまま、この耐火テープ７に対してケーブル・配管類３のみが移動させる設定に構成してある。   As described above, even when the cable / pipe 3 has an appropriate adhesive force (first bonding force) to the outer surface, when a moving force in the longitudinal direction acts on the pipe 3 due to an external force such as an earthquake, Only the cable / piping 3 is moved with respect to the refractory tape 7 while maintaining or substantially maintaining the initial winding state of the outer peripheral surface of the refractory sleeve 4 and the refractory tape 7.

〔第３実施形態〕
図６は、貫通孔防火措置構造の別の実施形態を示し、これは、耐火テープ７の自己粘着性の熱膨張性耐火層７Ａのうち、ケーブル・配管類３の外側面の貼付け箇所に貼付けられる第３貼付け領域Ｗ３に対応する熱膨張性耐火層部分を除去して、第３貼付け領域Ｗ３において露出するテープ基材７Ｂの露出基材部分７Ｂａの内側面を平滑な非接着面７ｂに構成してある。 [Third Embodiment]
FIG. 6 shows another embodiment of the through-hole fire-protection structure, which is pasted on the outer surface of the cable / pipe 3 in the self-adhesive thermally expandable fire-resistant layer 7 </ b> A of the fire-resistant tape 7. The thermally expandable refractory layer portion corresponding to the third affixing region W3 is removed, and the inner side surface of the exposed base material portion 7Ba of the tape substrate 7B exposed in the third affixing region W3 is configured as a smooth non-adhesive surface 7b. It is.

そして、耐火スリーブ４の端部のブッシング６とそれから導出されるケーブル・配管類３の外側面とにわたって耐火テープ７を巻き付けた際、この耐火テープ７の第３貼付け領域Ｗ３において露出するテープ基材７Ｂの露出基材部分７Ｂａの内側面の非接着面がケーブル・配管類３の外周面に摺動可能に当て付けられるだけであるため、地震等の外力に起因して配管類３に長手方向への移動力が作用したとき、耐火スリーブ４の外周面と耐火テープ７との施工当初の巻付け状態を維持又は略維持したまま、この耐火テープ７に対してケーブル・配管類３のみが移動することになる。   When the fireproof tape 7 is wound around the bushing 6 at the end of the fireproof sleeve 4 and the outer surface of the cable / piping 3 derived therefrom, the tape base material exposed in the third pasting region W3 of the fireproof tape 7 is exposed. Since the non-adhesive surface of the inner surface of the exposed base material portion 7Ba of 7B is merely slidably applied to the outer peripheral surface of the cable / piping 3, the longitudinal direction is applied to the piping 3 due to an external force such as an earthquake. When a moving force is applied to the refractory sleeve 4, only the cable / piping 3 moves relative to the refractory tape 7 while maintaining or substantially maintaining the initial winding state of the outer periphery of the refractory sleeve 4 and the refractory tape 7. Will do.

尚、その他の構成は、第１実施形態で説明した構成と同一であるから、同一の構成箇所には、第１実施形態と同一の番号を付記してそれの説明は省略する。
また、上述の第３実施形態において、耐火テープ７の第３貼付け領域Ｗ３に、第１貼付け領域Ｗ１及び第２貼付け領域Ｗ２に形成される自己粘着性の熱膨張性耐火層７Ａと同じ厚みで非粘着性の熱膨張性耐火層を形成して、第３貼付け領域Ｗ３の熱膨張性耐火層の表面を非接着面に構成してもよい。 In addition, since the other structure is the same as the structure demonstrated in 1st Embodiment, the same number is attached to the same structure location as 1st Embodiment, and the description is abbreviate | omitted.
In the third embodiment described above, the third adhesive region W3 of the fireproof tape 7 has the same thickness as the self-adhesive thermally expandable fireproof layer 7A formed in the first adhesive region W1 and the second adhesive region W2. A non-adhesive heat-expandable fireproof layer may be formed, and the surface of the heat-expandable fireproof layer in the third pasting region W3 may be configured as a non-adhesive surface.

〔第４実施形態〕
図７は、貫通孔防火措置構造において、耐火スリーブ４の端部のブッシング６とそれから導出されるケーブル・配管類３の外側面とにわたって巻回される耐火テープ７の別実施形態を示す。これは、テープ基材７Ｂの片面に、熱膨張性黒鉛及び無機充填材とを含有する樹脂組成物からなる非粘着性の熱膨張性耐火層７Ａを形成するとともに、この非粘着性の熱膨張性耐火層７Ａの表面のうち、耐火スリーブ４の一端部を構成するブッシング６の外嵌筒部６Ａの外周面６ａに貼付けられる第１貼付け領域Ｗ１と、ブッシング６の繋ぎ部６Ｃの外端面６ｂからケーブル・配管類３の外側面までの部位に貼付けられる第２貼付け領域Ｗ２に対応する部位に接着剤層７Ｃを形成して構成してある。 [Fourth Embodiment]
FIG. 7 shows another embodiment of the fireproof tape 7 wound around the bushing 6 at the end of the fireproof sleeve 4 and the outer surface of the cable / pipe 3 derived therefrom in the through-hole fireproof structure. This forms a non-adhesive thermally expandable refractory layer 7A made of a resin composition containing thermally expandable graphite and an inorganic filler on one side of the tape substrate 7B, and this non-adhesive thermal expansion. Among the surfaces of the refractory fire-resistant layer 7A, the first pasting region W1 to be pasted on the outer peripheral surface 6a of the external fitting cylinder portion 6A of the bushing 6 constituting one end portion of the fire-resistant sleeve 4, and the outer end surface 6b of the connecting portion 6C of the bushing 6 7C is formed by forming an adhesive layer 7C at a site corresponding to the second pasting region W2 that is pasted on the site from the cable to the outer surface of the cable 3.

ケーブル・配管類３の外側面の貼付け箇所に貼付けられる第３貼付け領域Ｗ３においは、非粘着性の熱膨張性耐火層７Ａの表面が露出するため、この露出する熱膨張性耐火層７Ａの表面をもって非接着面が形成されている。   Since the surface of the non-adhesive heat-expandable fire-resistant layer 7A is exposed in the third application region W3 that is applied to the application location on the outer surface of the cable / pipe 3, the surface of the exposed heat-expandable fire-resistant layer 7 A is exposed. A non-adhesive surface is formed.

そのため、地震等の外力に起因して配管類３に長手方向への移動力が作用したとき、耐火スリーブ４の外周面と耐火テープ７との施工当初の巻付け状態を維持又は略維持したまま、この耐火テープ７に対してケーブル・配管類３のみが移動することになる。   Therefore, when a moving force in the longitudinal direction acts on the piping 3 due to an external force such as an earthquake, the initial winding state of the outer peripheral surface of the fireproof sleeve 4 and the fireproof tape 7 is maintained or substantially maintained. Only the cable / pipe 3 moves relative to the fireproof tape 7.

尚、その他の構成は、第１実施形態で説明した構成と同一であるから、同一の構成箇所には、第１実施形態と同一の番号を付記してそれの説明は省略する。   In addition, since the other structure is the same as the structure demonstrated in 1st Embodiment, the same number is attached to the same structure location as 1st Embodiment, and the description is abbreviate | omitted.

〔その他の実施形態〕
（１）上述の実施形態では、鉄筋コンクリート壁１の貫通孔防火措置構造について説明したが、耐火構造体（防火区画体）としては、鉄筋コンクリート床又はＡＬＣパネル製（補強鉄筋を配置した軽量のコンクリートパネル）の壁又は床、或いは、石膏ボード製の中空壁等であってもよい。 [Other Embodiments]
(1) In the above-described embodiment, the through-hole fire prevention structure of the reinforced concrete wall 1 has been described. ) Wall or floor, or a hollow wall made of gypsum board.

（２）上述の実施形態では、前記耐火テープ７のテープ基材７Ｂにおける第３貼付け領域Ｗ３に対応する部位に、当該耐火テープ７をケーブル・配管類３の外側面に縛り付ける緊締具の一例である針金又は被覆針金９を設けたが、金属製の鎖等を用いてもよい。
また、耐火テープ７をケーブル・配管類３の外側面に縛り付ける針金等の緊締具を省略した形態で実施してもよい。 (2) In the above-described embodiment, an example of a fastener that binds the fireproof tape 7 to the outer surface of the cable / piping 3 at a portion corresponding to the third pasting region W3 of the tape base material 7B of the fireproof tape 7. Although a certain wire or coated wire 9 is provided, a metal chain or the like may be used.
Moreover, you may implement in the form which abundant fasteners, such as a wire which binds the fireproof tape 7 to the outer surface of the cable and piping 3, were abbreviate | omitted.

（３）上述の実施形態では、耐火テープ７とケーブル・配管類３の外側面との第１接合力を接合力を弱める接合力減少手段Ａにより、耐火テープ７とケーブル・配管類３の外側面との第１接合力を、耐火テープ７と耐火スリーブ４のブッシング６の外周面との第２接合力よりも小に構成したが、耐火テープ７と耐火スリーブ４のブッシング６の外周面との第２接合力を増強する接合力増大手段により、前記第１接合力を前記第２接合力よりも小に構成してもよい。   (3) In the above-described embodiment, the first bonding force between the refractory tape 7 and the outer surface of the cable / piping 3 is reduced by the bonding force reducing means A that weakens the bonding force. The first joining force with the side surface is configured to be smaller than the second joining force between the fireproof tape 7 and the outer peripheral surface of the bushing 6 of the fireproof sleeve 4. The first bonding force may be configured to be smaller than the second bonding force by a bonding force increasing means for increasing the second bonding force.

Ａ 接合力減少手段
１ 耐火構造体（鉄筋コンクリート壁）
２ 貫通孔
３ 長尺体（ケーブル・配管類）
４ 耐火スリーブ
７ 耐火テープ
７Ｂ テープ基材
８ 接合阻止シート
１１ 接合阻止筒体 A Bonding force reduction means 1 Fireproof structure (reinforced concrete wall)
2 Through-hole 3 Long body (cable / piping)
4 Fire-resistant sleeve 7 Fire-resistant tape 7B Tape base material 8 Bond prevention sheet 11 Bond prevention cylinder

Claims (7)

耐火構造体の貫通孔に貫設されている耐火スリーブの端部側の外周面と当該耐火スリーブに挿通されている長尺体の外側面とにわたって、片面に粘着層を形成してある耐火テープを巻き付けて、前記耐火スリーブの内周面と長尺体の外側面との間を閉塞してある貫通孔防火措置構造であって、
前記耐火テープと前記長尺体の外側面との第１接合力を、当該耐火テープと耐火スリーブの端部側の外周面との第２接合力よりも小に構成してある貫通孔防火措置構造。 A fireproof tape in which an adhesive layer is formed on one side across the outer peripheral surface of the end of the fireproof sleeve provided in the through hole of the fireproof structure and the outer surface of the long body inserted through the fireproof sleeve Is a through-hole fire prevention structure in which the space between the inner peripheral surface of the fireproof sleeve and the outer surface of the elongated body is closed,
A through hole fire prevention measure in which the first joining force between the fireproof tape and the outer surface of the elongated body is smaller than the second joining force between the fireproof tape and the outer peripheral surface on the end side of the fireproof sleeve. Construction. 前記第１接合力を前記第２接合力よりも弱める接合力減少手段により、前記第１接合力を前記第２接合力よりも小に構成してある請求項１記載の貫通孔防火措置構造。   2. The through-hole fire prevention structure according to claim 1, wherein the first bonding force is configured to be smaller than the second bonding force by a bonding force reducing unit that weakens the first bonding force than the second bonding force. 前記接合力減少手段が、前記耐火テープの粘着層における長尺体の外側面に対応する貼付け領域に貼り付けた可撓性の接合阻止シートから構成されている請求項２記載の貫通孔防火措置構造。   The through-hole fire prevention measure according to claim 2, wherein the joining force reducing means is composed of a flexible joining prevention sheet attached to an attachment region corresponding to the outer side surface of the long body in the adhesive layer of the fireproof tape. Construction. 前記接合力減少手段が、長尺体の外側面における少なくとも前記耐火テープの貼付け領域に対して当該長尺体との相対移動を許容する状態で外装された接合阻止筒体から構成されている請求項２記載の貫通孔防火措置構造。   The said joining force reduction means is comprised from the joining prevention cylinder covered in the state which accept | permits a relative movement with the said elongate body at least with respect to the sticking area | region of the said fireproof tape in the outer surface of a elongate body. Item 2. The through-hole fire prevention structure according to Item 2. 耐火構造体の貫通孔に貫設されている耐火スリーブの端部側の外周面と当該耐火スリーブに挿通されている長尺体の外側面とにわたって耐火テープを巻き付けて、前記耐火スリーブの内周面と長尺体の外側面との間を閉塞してある貫通孔防火措置構造であって、
前記耐火テープの貼付け面のうち、前記耐火スリーブの端部側の外周面に対する貼付け領域には粘着層が形成され、前記長尺体の外側面に対する貼付け領域には非接着面が形成されている貫通孔防火措置構造。 A fire-resistant tape is wound around the outer peripheral surface of the end of the fire-resistant sleeve penetrating the through-hole of the fire-resistant structure and the outer surface of the long body inserted through the fire-resistant sleeve, and the inner periphery of the fire-resistant sleeve A through-hole fire prevention structure in which the space between the surface and the outer surface of the elongated body is closed,
An adhesive layer is formed in the pasting area of the fireproof tape on the outer peripheral surface on the end side of the fireproof sleeve, and a non-adhesive surface is formed in the pasting area on the outer surface of the long body. Through-hole fire prevention structure. 請求項３記載の貫通孔防火措置構造に用いられる前記耐火テープであって、前記粘着層における前記長尺体の外側面に対応する貼付け領域には、前記接合力減少手段を構成する可撓性の前記接合阻止シートが貼り付けられている耐火テープ。   It is the said fireproof tape used for the through-hole fire-proof measure structure of Claim 3, Comprising: The flexibility which comprises the said joining force reduction means in the sticking area | region corresponding to the outer surface of the said elongate body in the said adhesion layer. A fireproof tape to which the bonding prevention sheet is attached. 請求項５記載の貫通孔防火措置構造に用いられる前記耐火テープであって、テープ基材の貼付け面のうち、前記耐火スリーブの端部側の外周面に対する貼付け領域には粘着層が形成され、前記長尺体の外側面に対する貼付け領域には非接着面が形成されている耐火テープ。   The fireproof tape used in the through-hole fire prevention structure according to claim 5, wherein an adhesive layer is formed in a pasting area of the tape base material on the outer peripheral surface on the end side of the fireproof sleeve, A fireproof tape in which a non-adhesive surface is formed in an affixing region to an outer surface of the elongated body.
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