JP6837736B2 - Through-hole cover and fireproof structure of compartment through-hole - Google Patents
Through-hole cover and fireproof structure of compartment through-hole Download PDFInfo
- Publication number
- JP6837736B2 JP6837736B2 JP2015111466A JP2015111466A JP6837736B2 JP 6837736 B2 JP6837736 B2 JP 6837736B2 JP 2015111466 A JP2015111466 A JP 2015111466A JP 2015111466 A JP2015111466 A JP 2015111466A JP 6837736 B2 JP6837736 B2 JP 6837736B2
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- Prior art keywords
- main body
- hole
- compartment
- hole cover
- longitudinal direction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Landscapes
- Building Environments (AREA)
- Installation Of Indoor Wiring (AREA)
Description
本発明は、区画体の貫通孔に挿入される貫通孔カバー、及び当該貫通孔カバーを備える区画貫通孔の防火構造に関する。 The present invention relates to a through-hole cover inserted into a through-hole of a compartment and a fireproof structure of a compartment through-hole provided with the through-hole cover.
従来、住宅の壁の区画貫通部の施工方法として、貫通部に耐火素材からなる貫通孔カバーを設置し、貫通孔カバーの内部に電気配線や配管を貫通させて、区画貫通部の耐火処理を施す工法が行われている。例えば特許文献１では、上記の貫通孔カバーとして金属製のスリーブを使用する方法が開示されている。この特許文献１では、区画体の貫通孔に鋼製電線管のスリーブが貫設され、スリーブの内部に配線や配管が挿通される。そして、耐火パテによって、スリーブの内周面と、配線または配管の外側面との間が閉塞される。 Conventionally, as a method of constructing a section penetration part of a house wall, a through hole cover made of a fireproof material is installed in the penetration part, and electrical wiring and piping are penetrated inside the through hole cover to perform fireproof treatment of the section penetration part. The method of applying is being carried out. For example, Patent Document 1 discloses a method of using a metal sleeve as the through-hole cover. In Patent Document 1, a sleeve of a steel conduit is pierced through a through hole of a compartment, and wiring and piping are inserted inside the sleeve. Then, the fireproof putty closes the space between the inner peripheral surface of the sleeve and the outer surface of the wiring or piping.
しかしながら特許文献１のように、スリーブと配線または配管との間に耐火パテを埋める作業は煩雑であり、区画体の貫通孔が部屋の隅や天井近傍等に形成される場合には、耐火パテを埋める作業が困難となり、多大な負担を要する。また近年では作業者の高齢化が進んでおり、高齢の作業者にとっては、金属製のスリーブが重いことで、スリーブを施工位置に運ぶ作業が、大きな負担となっている。 However, as in Patent Document 1, the work of burying the fireproof putty between the sleeve and the wiring or piping is complicated, and when the through hole of the compartment is formed in the corner of the room or near the ceiling, the fireproof putty is used. The work of filling the ceiling becomes difficult, and a great burden is required. Further, in recent years, the aging of workers has progressed, and the heavy metal sleeves place a heavy burden on elderly workers to carry the sleeves to the construction position.
本発明は、上記課題を解決するためになされたものであり、その目的は、区画貫通孔の耐火処理を容易に実現可能な貫通孔カバー、及び当該貫通孔カバーを備える区画貫通孔の防火構造を提供することである。 The present invention has been made to solve the above problems, and an object of the present invention is a through-hole cover capable of easily realizing fireproof treatment of a partition through hole, and a fireproof structure of a partition through hole provided with the through hole cover. Is to provide.
本発明の第１観点に係る貫通孔カバーは、区画体の貫通孔に挿入される貫通孔カバーであって、筒状を呈し、配線あるいは配管が内挿される本体と、前記本体の長手方向の所定位置において、前記本体の内部に設けられるヒレ部とを備え、前記ヒレ部は、前記本体の内周面の周方向に並ぶ複数の突出片から構成され、前記複数の突出片は、前記本体の内周面から径内側に突出しており、当該複数の突出片の先端によって、前記配線あるいは前記配管の周囲が囲まれ、前記本体と、前記ヒレ部を構成する前記複数の突出片とは、熱膨張性を有する。 The through-hole cover according to the first aspect of the present invention is a through-hole cover that is inserted into a through-hole of a compartment, has a tubular shape, and has a main body into which wiring or piping is inserted and a main body in the longitudinal direction of the main body. A fin portion provided inside the main body at a predetermined position is provided, and the fin portion is composed of a plurality of projecting pieces arranged in the circumferential direction of the inner peripheral surface of the main body, and the plurality of projecting pieces are the main body. The wiring or the piping is surrounded by the tips of the plurality of projecting pieces, and the main body and the plurality of projecting pieces constituting the fin portion are formed on each other. Has thermal expandability.
好ましくは、前記本体と、前記ヒレ部を構成する前記複数の突出片とは、熱膨張性の樹脂素材から形成される。 Preferably, the main body and the plurality of projecting pieces constituting the fin portion are formed of a heat-expandable resin material.
好ましくは、前記ヒレ部は、前記本体の長手方向に間隔をあけて複数設けられる。 Preferably, a plurality of the fin portions are provided at intervals in the longitudinal direction of the main body.
好ましくは、前記本体の長手方向の所定位置には、前記本体の径外側に突出するフランジ部が設けられ、前記フランジ部は、熱膨張性の樹脂素材から形成される。 Preferably, a flange portion that projects outward from the diameter of the main body is provided at a predetermined position in the longitudinal direction of the main body, and the flange portion is formed of a heat-expandable resin material.
好ましくは、前記フランジ部は、前記本体の長手方向の一端に設けられる。また或いは、前記フランジ部は、前記本体の長手方向の途中位置に設けられ、前記フランジ部を境とする前記本体の長手方向の一端側の範囲と他端側の範囲とのうち、一方の範囲の長さは、他方の範囲の長さよりも、長い。 Preferably, the flange portion is provided at one end of the main body in the longitudinal direction. Alternatively, the flange portion is provided at an intermediate position in the longitudinal direction of the main body, and is one of a range on one end side and a range on the other end side in the longitudinal direction of the main body with the flange portion as a boundary. The length of is longer than the length of the other range.
好ましくは、前記本体に、長手方向の一端から他端まで延びる切り込みが形成されるとともに、当該切り込みが、前記本体の周方向に隣り合う２つの前記突出片の間の間隙に連続することで、前記本体は略半割りの状態とされている。 Preferably, the main body is formed with a notch extending from one end to the other end in the longitudinal direction, and the notch is continuous with the gap between two adjacent protruding pieces in the circumferential direction of the main body. The main body is in a substantially half-divided state.
好ましくは、各前記ヒレ部を構成する前記複数の突出片は、前記本体の中心から放射状に延びる間隙を介して、前記本体の内周面の周方向に並んでおり、前記本体の長手方向の一端又は他端から視る側面視において、一の前記ヒレ部における前記放射状の間隙は、他の前記ヒレ部における前記放射状の間隙と重なっていない。 Preferably, the plurality of projecting pieces constituting each of the fin portions are arranged in the circumferential direction of the inner peripheral surface of the main body through a gap extending radially from the center of the main body, and are arranged in the longitudinal direction of the main body. In a side view viewed from one end or the other end, the radial gap in one fin portion does not overlap with the radial gap in the other fin portion.
本発明の第２観点に係る防火構造は、第１観点に係る貫通孔カバーと、貫通孔を有する区画体とを備え、前記貫通孔に前記貫通孔カバーの前記本体が挿入され、前記貫通孔カバーの前記本体に配線あるいは配管が内挿されている。 The fireproof structure according to the second aspect of the present invention includes a through-hole cover according to the first aspect and a compartment having a through-hole, and the main body of the through-hole cover is inserted into the through-hole to form the through-hole. Wiring or piping is inserted into the main body of the cover.
好ましくは、前記本体の長さが前記貫通孔の幅に一致することで、前記貫通孔の全幅に亘って前記本体が配置されている。 Preferably, the main body is arranged over the entire width of the through hole so that the length of the main body matches the width of the through hole.
本発明によれば、貫通孔カバーの本体やヒレ部が熱膨張性を有することで、貫通孔カバーを区画体の貫通孔に挿入する簡易な作業で耐火処理を実現できる。このため、耐火パテを埋める煩雑な作業を要しない。したがって、区画貫通孔の耐火処理を容易に実現できる。 According to the present invention, since the main body and the fin portion of the through-hole cover have thermal expansion property, fireproof treatment can be realized by a simple operation of inserting the through-hole cover into the through-hole of the compartment. Therefore, the complicated work of filling the refractory putty is not required. Therefore, fireproof treatment of the compartment through hole can be easily realized.
以下、本発明の第１実施形態について図面を参照しつつ説明する。図１は、本発明の第１実施形態に係る防火構造１０を示す断面図である。図２や図３は、第１実施形態に係る貫通孔カバー１を示す斜視図である。図４は、第１実施形態に係る貫通孔カバー１を示す正面図である。図４（ａ）は貫通孔カバー１の長手方向の一端から視た図であり、図４（ｂ）は貫通孔カバー１の長手方向の他端から視た図である。 Hereinafter, the first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view showing a fireproof structure 10 according to the first embodiment of the present invention. 2 and 3 are perspective views showing the through-hole cover 1 according to the first embodiment. FIG. 4 is a front view showing the through hole cover 1 according to the first embodiment. FIG. 4A is a view seen from one end of the through hole cover 1 in the longitudinal direction, and FIG. 4B is a view seen from the other end of the through hole cover 1 in the longitudinal direction.
図１に示すように、防火構造１０は、区画体１１と、貫通孔カバー１とを備える。区画体１１は、上下方向に延びる建築物の壁であり、防火区画Ａ，Ｂを区画する。区画体１１としての壁の構造は、特に限定されるものではなく、例えば、鉄筋コンクリート構造（ＲＣ）や軽量気泡コンクリート構造（ＡＬＣ）の他、図示は省略するが、木製又は鋼製の間柱を挟み込むように両側に石膏ボードを固定した間仕切壁（中空壁）などを挙げることができる。区画体１１には、防火区画Ａ，Ｂを連通させる貫通孔１２が形成される。壁が間仕切壁（中空壁）の場合には、各石膏ボードに貫通孔１２が形成される。貫通孔１２の断面は、円形状や矩形状など、種々の形状に形成される。 As shown in FIG. 1, the fireproof structure 10 includes a compartment 11 and a through-hole cover 1. The compartment 11 is a wall of a building extending in the vertical direction, and partitions fire protection compartments A and B. The structure of the wall as the compartment 11 is not particularly limited, and for example, in addition to the reinforced concrete structure (RC) and the lightweight aerated concrete structure (ALC), although not shown, a wooden or steel stud is sandwiched. A partition wall (hollow wall) in which gypsum boards are fixed on both sides can be mentioned. A through hole 12 is formed in the compartment 11 to communicate the fire protection compartments A and B. When the wall is a partition wall (hollow wall), a through hole 12 is formed in each gypsum board. The cross section of the through hole 12 is formed into various shapes such as a circular shape and a rectangular shape.
貫通孔カバー１は、貫通孔１２を通じた火災の伝搬を阻止すべく、貫通孔１２に挿入されるものである。貫通孔カバー１は、本体２と、フランジ部３と、ヒレ部４ａ，４ｂとを備える。本体２は、貫通孔１２の断面に対応する筒状を呈しており、貫通孔１２に挿入される（貫通孔１２の断面が円形状であることで、図示の例では、本体２が円筒状を呈している）。本体２は、その長さが貫通孔１２の幅に一致することで、貫通孔１２の全幅に亘って配置されている（図１）。本体２の内部には、配線５あるいは配管が内挿される。配線５は、例えば電線や光ファイバケーブルである。配管は、例えば水道管や給水管、排水管、冷媒管である。 The through-hole cover 1 is inserted into the through-hole 12 in order to prevent the propagation of fire through the through-hole 12. The through-hole cover 1 includes a main body 2, a flange portion 3, and fin portions 4a and 4b. The main body 2 has a tubular shape corresponding to the cross section of the through hole 12, and is inserted into the through hole 12 (because the cross section of the through hole 12 is circular, the main body 2 is cylindrical in the illustrated example. Is presented). The main body 2 is arranged over the entire width of the through hole 12 so that its length matches the width of the through hole 12 (FIG. 1). Wiring 5 or piping is inserted inside the main body 2. The wiring 5 is, for example, an electric wire or an optical fiber cable. The pipes are, for example, water pipes, water supply pipes, drainage pipes, and refrigerant pipes.
フランジ部３は、本体２の長手方向の一端に設けられ、本体２の径外側に突出する。フランジ部３は、所定の厚みを有する円板状であり、その外形は区画体１１の貫通孔１２の外形よりも大きい。なお、フランジ部３は、必ずしも外形が円形である必要はなく、例えば四角形や六角形などの多角形（好ましくは正多角形）であってもよい。図１に示すように、フランジ部３は、貫通孔１２の外側に位置して、区画体１１の壁面に沿っている。フランジ部３を、接着剤や粘着剤、粘着テープ、又はその他、ビスなどの固定具を用いて区画体１１の壁面に固着することで、貫通孔カバー１を区画体１１に固定できる。 The flange portion 3 is provided at one end of the main body 2 in the longitudinal direction, and projects outward from the diameter of the main body 2. The flange portion 3 has a disk shape having a predetermined thickness, and its outer shape is larger than the outer shape of the through hole 12 of the compartment 11. The flange portion 3 does not necessarily have to have a circular outer shape, and may be a polygon such as a quadrangle or a hexagon (preferably a regular polygon). As shown in FIG. 1, the flange portion 3 is located outside the through hole 12 and is along the wall surface of the compartment 11. The through-hole cover 1 can be fixed to the compartment 11 by fixing the flange portion 3 to the wall surface of the compartment 11 using an adhesive, an adhesive, an adhesive tape, or other fixing tool such as a screw.
ヒレ部４ａは、本体２の長手方向の一端の内部に設けられる。ヒレ部４ｂは本体２の長手方向の他端の内部に設けられる。図２に示すように、ヒレ部４ａは突出片６ａ〜６ｈから構成され、ヒレ部４ｂは突出片６ｉ〜６ｐから構成される。突出片６ａ〜６ｈや、突出片６ｉ〜６ｐは、放射状の間隙７を介して本体２の内周面の周方向に並んでいる。突出片６の各々は、本体２の内周面から径内側に突出している。間隙７が本体２の中心から放射状に延びることで、突出片６ａ〜６ｈや、突出片６ｉ〜６ｐは、本体２の中心（間隙７の交差点）に向けて略三角状に突出しており、ヒレ部４ａ（突出片６ａ〜６ｈ）や、ヒレ部４ｂ（突出片６ｉ〜６ｐ）は、本体２の横断面のほぼ全体（間隙７を除く横断面の範囲）を閉塞している。 The fin portion 4a is provided inside one end of the main body 2 in the longitudinal direction. The fin portion 4b is provided inside the other end of the main body 2 in the longitudinal direction. As shown in FIG. 2, the fin portion 4a is composed of projecting pieces 6a to 6h, and the fin portion 4b is composed of projecting pieces 6i to 6p. The protruding pieces 6a to 6h and the protruding pieces 6i to 6p are arranged in the circumferential direction of the inner peripheral surface of the main body 2 through the radial gap 7. Each of the projecting pieces 6 projects inward in diameter from the inner peripheral surface of the main body 2. Since the gap 7 extends radially from the center of the main body 2, the protruding pieces 6a to 6h and the protruding pieces 6i to 6p project substantially in a triangular shape toward the center of the main body 2 (intersection of the gap 7), and the fins. The portion 4a (protruding pieces 6a to 6h) and the fin portion 4b (protruding pieces 6i to 6p) close almost the entire cross section of the main body 2 (the range of the cross section excluding the gap 7).
本体２内の気密性を高めることや、本体２内における光の通過を阻止することを目的として、図４に示すように、ヒレ部４ａにおける間隙７と、ヒレ部４ｂにおける間隙７とは、側面視で重ならないように形成されている（図４（ａ）では、ヒレ部４ａの間隙７を実線で示し、ヒレ部４ｂの間隙７を破線で示す。図４（ｂ）では、ヒレ部４ｂの間隙７を実線で示し、ヒレ部４ａの間隙７を破線で示す）。上記の側面視とは、本体２の長手方向の一端又は他端から本体２を視る視方である。なお詳細には、側面視で重ならないヒレ部４ａ，４ｂの間隙７の範囲は、間隙７の交差点を除く範囲であり、ヒレ部４ａやヒレ部４ｂの間隙７の交差点は、いずれも本体２の中心にあるため、側面視で重なる。このヒレ部４ａやヒレ部４ｂの間隙７の交差点は、突出片６ａ〜６ｈの先端や突出片６ｉ〜６ｐの先端によって囲まれる範囲であり、この範囲に配線５や配管が通される。なお図示の例では、突出片６ａ〜６ｈや突出片６ｉ〜６ｐの先端が尖った形状を呈しているが、突出片６ａ〜６ｈや突出片６ｉ〜６ｐの先端の形状は、配線５や配管の外形に対応する丸みを帯びた形状であってよい。 As shown in FIG. 4, the gap 7 in the fin portion 4a and the gap 7 in the fin portion 4b are used for the purpose of improving the airtightness in the main body 2 and blocking the passage of light in the main body 2. It is formed so as not to overlap in a side view (in FIG. 4A, the gap 7 of the fin portion 4a is shown by a solid line, and the gap 7 of the fin portion 4b is shown by a broken line. In FIG. 4B, the fin portion is shown. The gap 7 of 4b is shown by a solid line, and the gap 7 of the fin portion 4a is shown by a broken line). The above-mentioned side view is a view in which the main body 2 is viewed from one end or the other end in the longitudinal direction of the main body 2. More specifically, the range of the gap 7 of the fin portions 4a and 4b that do not overlap in the side view is the range excluding the intersection of the gap 7, and the intersection of the fin portion 4a and the gap 7 of the fin portion 4b is the main body 2. Because it is in the center of, it overlaps in the side view. The intersection of the fin portion 4a and the gap 7 of the fin portion 4b is a range surrounded by the tips of the protruding pieces 6a to 6h and the tips of the protruding pieces 6i to 6p, and the wiring 5 and the pipe are passed through this range. In the illustrated example, the tips of the protruding pieces 6a to 6h and the protruding pieces 6i to 6p have a sharp shape, but the shapes of the tips of the protruding pieces 6a to 6h and the protruding pieces 6i to 6p are the wiring 5 and the piping. It may have a rounded shape corresponding to the outer shape of.
図２に示すように、本体２には長手方向の一端から他端まで延びる切り込み８が形成されており、この切り込み８にヒレ部４ａ，４ｂにおける１つの間隙７が連続している。すなわち、ヒレ部４ａでは、隣り合う突出片６ｄと突出片６ｅの間の間隙７ａが切り込み８の一端８ａに連続している（フランジ部３には径方向に延びる切り欠け８ａが形成されており、この切り欠け８ａによって切り込み８の一端が構成されて、当該切り欠け８ａに間隙７ａが連続している）。またヒレ部４ｂでは、隣り合う突出片６ｌと突出片６ｍの間の間隙７ｂが切り込み８の他端８ｂに連続している。このように間隙７ａ，７ｂが切り込み８に連続することで、貫通孔カバー１は略半割りの状態とされており、図３に示すように、半割の一方側・他方側を引き開く力Ｆを加えることで、切り込み８や間隙７ａ，７ｂの幅を拡げることができる。 As shown in FIG. 2, a notch 8 extending from one end to the other end in the longitudinal direction is formed in the main body 2, and one gap 7 in the fin portions 4a and 4b is continuous with the notch 8. That is, in the fin portion 4a, the gap 7a between the adjacent protruding pieces 6d and the protruding pieces 6e is continuous with one end 8a of the notch 8 (the flange portion 3 is formed with a notch 8a extending in the radial direction). , One end of the notch 8 is formed by the notch 8a, and the gap 7a is continuous with the notch 8a). Further, in the fin portion 4b, the gap 7b between the adjacent protruding pieces 6l and the protruding pieces 6m is continuous with the other end 8b of the notch 8. By making the gaps 7a and 7b continuous with the notch 8 in this way, the through hole cover 1 is in a substantially half-split state, and as shown in FIG. 3, a force that opens one side and the other side of the half-split. By adding F, the width of the notch 8 and the gaps 7a and 7b can be widened.
上述した本体２やフランジ部３やヒレ部４ａ，４ｂは、いずれも樹脂成分に熱膨張性層状無機物と無機充填材とを含む熱膨張性の耐火樹脂素材から形成される。フランジ部３やヒレ部４ａ，４ｂは本体２と一体で成形されることが好ましいが、フランジ部３やヒレ部４ａ，４ｂを、本体２と別体で形成し、粘着剤や接着剤などを用いて本体２に後付けで設けてもよい。なお、フランジ部３を本体２と別体で形成する場合には、フランジ部３は、必ずしも熱膨張性を有する必要はないが、耐火性を有することが好ましい。 The main body 2, the flange portion 3, and the fin portions 4a and 4b described above are all formed of a heat-expandable refractory resin material containing a heat-expandable layered inorganic substance and an inorganic filler as resin components. It is preferable that the flange portion 3 and the fin portions 4a and 4b are integrally molded with the main body 2, but the flange portion 3 and the fin portions 4a and 4b are formed separately from the main body 2 to form an adhesive, an adhesive or the like. It may be retrofitted to the main body 2 by using it. When the flange portion 3 is formed separately from the main body 2, the flange portion 3 does not necessarily have to have thermal expansion property, but preferably has fire resistance.
上記の樹脂成分としては、熱可塑性樹脂、熱硬化性樹脂、ゴム物質、およびそれらの組み合わせが挙げられる。熱可塑性樹脂としては、例えば、ポリプロピレン系樹脂、ポリエチレン系樹脂、ポリ（１−）ブテン系樹脂、ポリペンテン系樹脂等のポリオレフィン系樹脂、ポリスチレン系樹脂、アクリロニトリル−ブタジエン−スチレン（ＡＢＳ）系樹脂、ポリカーボネート系樹脂、ポリフェニレンエーテル系樹脂、（メタ）アクリル系樹脂、ポリアミド系樹脂、ポリ塩化ビニル系樹脂、フェノール系樹脂、ポリウレタン系樹脂、ポリイソブチレン等の合成樹脂類が挙げられる。 Examples of the above resin components include thermoplastic resins, thermosetting resins, rubber substances, and combinations thereof. Examples of the thermoplastic resin include polyolefin resins such as polypropylene resins, polyethylene resins, poly (1-) butene resins, and polypentene resins, polystyrene resins, acrylonitrile-butadiene-styrene (ABS) resins, and polycarbonates. Examples thereof include synthetic resins such as based resins, polyphenylene ether-based resins, (meth) acrylic resins, polyamide-based resins, polyvinyl chloride-based resins, phenol-based resins, polyurethane-based resins, and polyisobutylene.
上記の熱硬化性樹脂としては、例えば、ポリウレタン、ポリイソシアネート、ポリイソシアヌレート、フェノール樹脂、エポキシ樹脂、尿素樹脂、メラミン樹脂、不飽和ポリエステル樹脂、ポリイミド等が挙げられる。 Examples of the thermosetting resin include polyurethane, polyisocyanate, polyisocyanurate, phenol resin, epoxy resin, urea resin, melamine resin, unsaturated polyester resin, and polyimide.
ゴム物質としては、天然ゴム、イソプレンゴム、ブタジエンゴム、１，２−ポリブタジエンゴム、スチレン−ブタジエンゴム、クロロプレンゴム、ニトリルゴム、ブチルゴム、塩素化ブチルゴム、エチレン−プロピレンゴム、クロロスルホン化ポリエチレン、アクリルゴム、エピクロルヒドリンゴム、多加硫ゴム、非加硫ゴム、シリコンゴム、フッ素ゴム、ウレタンゴム等のゴム物質等が挙げられる。
これらの合成樹脂類及び／又はゴム物質は、一種もしくは二種以上を使用することができる。
これらの合成樹脂類及び／又はゴム物質の中でも、柔軟でゴム的性質を持っているものが好ましい。この様な性質を持つものは無機充填材を高充填することが可能であり、得られる樹脂組成物が柔軟で扱い易いものとなる。より柔軟で扱い易い樹脂組成物を得るためには、ブチル等の非加硫ゴムやポリエチレン系樹脂が好適に用いられる。代わりに、樹脂自体の難燃性を上げて防火性能を向上させるという観点からは、エポキシ樹脂が好ましい。
Rubber substances include natural rubber, isoprene rubber, butadiene rubber, 1,2-polybutadiene rubber, styrene-butadiene rubber, chloroprene rubber, nitrile rubber, butyl rubber, chlorinated butyl rubber, ethylene-propylene rubber, chlorosulfonated polyethylene, acrylic rubber. , Epichlorohydrin rubber, polyvulverable rubber, non-vulverable rubber, silicon rubber, fluororubber, urethane rubber and other rubber substances.
As these synthetic resins and / or rubber substances, one kind or two or more kinds can be used.
Among these synthetic resins and / or rubber substances, those having flexible and rubber-like properties are preferable. Those having such properties can be highly filled with an inorganic filler, and the obtained resin composition becomes flexible and easy to handle. In order to obtain a more flexible and easy-to-handle resin composition, a non-vulcanized rubber such as butyl or a polyethylene-based resin is preferably used. Instead, an epoxy resin is preferable from the viewpoint of increasing the flame retardancy of the resin itself and improving the fireproof performance.
熱膨張性層状無機物は加熱時に膨張するものであるが、かかる熱膨張性層状無機物に特に限定はなく、例えば、バーミキュライト、カオリン、マイカ、熱膨張性黒鉛等を挙げることができる。熱膨張性黒鉛とは、従来公知の物質であり、天然鱗状グラファイト、熱分解グラファイト、キッシュグラファイト等の粉末を、濃硫酸、硝酸、セレン酸等の無機酸と、濃硝酸、過塩素酸、過塩素酸塩、過マンガン酸塩、重クロム酸塩、重クロム酸塩、過酸化水素等の強酸化剤とで処理してグラファイト層間化合物を生成させたものであり、炭素の層状構造を維持したままの結晶化合物の一種である。 The heat-expandable layered inorganic material expands when heated, but the heat-expandable layered inorganic material is not particularly limited, and examples thereof include vermiculite, kaolin, mica, and heat-expandable graphite. Thermally expandable graphite is a conventionally known substance, in which powders such as natural scaly graphite, thermally decomposed graphite, and kiss graphite are mixed with inorganic acids such as concentrated nitric acid, nitric acid, and selenic acid, and concentrated nitric acid, perchloric acid, and excess. A graphite interlayer compound was produced by treatment with a strong oxidizing agent such as chlorate, permanganate, dichromate, dichromate, hydrogen peroxide, etc., and the layered structure of carbon was maintained. It is a kind of raw crystalline compound.
上記のように酸処理して得られた熱膨張性黒鉛は、更にアンモニア、脂肪族低級アミン、アルカリ金属化合物、アルカリ土類金属化合物等でさらに中和してもよい。熱膨張性黒鉛の粒度は、２０〜２００メッシュが好ましい。粒度が２００メッシュより大きいと、黒鉛の膨張度が膨張断熱層が得るのに十分であり、また粒度が２０メッシュより小さいと、樹脂に配合する際の分散性が良く、物性が良好である。熱膨張性黒鉛の市販品としては、例えば、東ソー社製「ＧＲＥＰ−ＥＧ」、ＧＲＡＦＴＥＣＨ社製「ＧＲＡＦＧＵＡＲＤ」等が挙げられる。 The heat-expandable graphite obtained by the acid treatment as described above may be further neutralized with ammonia, an aliphatic lower amine, an alkali metal compound, an alkaline earth metal compound or the like. The particle size of the heat-expandable graphite is preferably 20 to 200 mesh. When the particle size is larger than 200 mesh, the degree of expansion of graphite is sufficient to obtain the expanded heat insulating layer, and when the particle size is smaller than 20 mesh, the dispersibility when blended with the resin is good and the physical properties are good. Examples of commercially available products of heat-expandable graphite include "GREP-EG" manufactured by Tosoh Corporation and "GRAFGUARD" manufactured by GRAFTECH.
無機充填剤は、膨張断熱層が形成される際、熱容量を増大させ伝熱を抑制するとともに、骨材的に働いて膨張断熱層の強度を向上させる。無機充填剤としては特に限定されず、例えば、アルミナ、酸化亜鉛、酸化チタン、酸化カルシウム、酸化マグネシウム、酸化鉄、酸化錫、酸化アンチモン、フェライト類等の金属酸化物；水酸化カルシウム、水酸化マグネシウム、水酸化アルミニウム、ハイドロタルサイト等の含水無機物；塩基性炭酸マグネシウム、炭酸カルシウム、炭酸マグネシウム、炭酸亜鉛、炭酸ストロンチウム、炭酸バリウム等の金属炭酸塩等が挙げられる。 When the expanded heat insulating layer is formed, the inorganic filler increases the heat capacity and suppresses heat transfer, and also acts as an aggregate to improve the strength of the expanded heat insulating layer. The inorganic filler is not particularly limited, and for example, metal oxides such as alumina, zinc oxide, titanium oxide, calcium oxide, magnesium oxide, iron oxide, tin oxide, antimony oxide, and ferrites; calcium hydroxide, magnesium hydroxide. , Hydroinorganic substances such as aluminum hydroxide and hydrotalcite; metal carbonates such as basic magnesium carbonate, calcium carbonate, magnesium carbonate, zinc carbonate, strontium carbonate and barium carbonate can be mentioned.
また、無機充填剤としては、これらの他に、硫酸カルシウム、石膏繊維、ケイ酸カルシウム等のカルシウム塩；シリカ、珪藻土、ドーソナイト、硫酸バリウム、タルク、クレー、マイカ、モンモリロナイト、ベントナイト、活性白土、セピオライト、イモゴライト、セリサイト、ガラス繊維、ガラスビーズ、シリカ系バルン、窒化アルミニウム、窒化ホウ素、窒化ケイ素、カーボンブラック、グラファイト、炭素繊維、炭素バルン、木炭粉末、各種金属粉、チタン酸カリウム、硫酸マグネシウム「ＭＯＳ」（商品名）、チタン酸ジルコン酸鉛、ステアリン酸亜鉛、ステアリン酸カルシウム、アルミニウムボレート、硫化モリブデン、炭化ケイ素、ステンレス繊維、ホウ酸亜鉛、各種磁性粉、スラグ繊維、フライアッシュ、脱水汚泥等が挙げられる。これらの無機充填剤は単独で用いても、２種以上を併用してもよい。 In addition to these, as inorganic fillers, calcium salts such as calcium sulfate, gypsum fiber, and calcium silicate; silica, diatomaceous soil, dosonite, barium sulfate, talc, clay, mica, montmorillonite, bentonite, active white clay, and sepiolite. , Imogolite, sericite, glass fiber, glass beads, silica-based balun, aluminum nitride, boron nitride, silicon nitride, carbon black, graphite, carbon fiber, carbon balun, charcoal powder, various metal powders, potassium titanate, magnesium sulfate " MOS ”(trade name), lead zirconate titanate, zinc stearate, calcium stearate, aluminum borate, molybdenum sulfide, silicon carbide, stainless fiber, zinc borate, various magnetic powders, slag fibers, fly ash, dehydrated sludge, etc. Can be mentioned. These inorganic fillers may be used alone or in combination of two or more.
無機充填剤の粒径としては、０．５〜１００μｍが好ましく、より好ましくは１〜５０μｍである。無機充填剤は、添加量が少ないときは、分散性が性能を大きく左右するため、粒径の小さいものが好ましいが、０．５μｍ以上であると、分散性が良好である。添加量が多いときは、高充填が進むにつれて、樹脂組成物の粘度が高くなり成形性が低下するが、粒径を大きくすることで樹脂組成物の粘度を低下させることができる点から、粒径の大きいものが好ましいが、１００μｍ以下の粒径が成形体の表面性、樹脂組成物の力学的物性の点で望ましい。 The particle size of the inorganic filler is preferably 0.5 to 100 μm, more preferably 1 to 50 μm. When the amount of the inorganic filler added is small, the dispersibility greatly affects the performance, so that the inorganic filler has a small particle size, but when it is 0.5 μm or more, the dispersibility is good. When the amount added is large, the viscosity of the resin composition increases and the moldability decreases as the high filling progresses, but the viscosity of the resin composition can be decreased by increasing the particle size. A large diameter is preferable, but a particle size of 100 μm or less is desirable from the viewpoint of the surface properties of the molded product and the mechanical properties of the resin composition.
無機充填剤としては、例えば、水酸化アルミニウムでは、粒径１８μｍの「ハイジライトＨ−３１」（昭和電工社製）、粒径２５μｍの「Ｂ３２５」（ＡＬＣＯＡ社製）、炭酸カルシウムでは、粒径１．８μｍの「ホワイトンＳＢ赤」（備北粉化工業社製）、粒径８μｍの「ＢＦ３００」（備北粉化工業社製）等が挙げられる。 Examples of the inorganic filler include "Heidilite H-31" (manufactured by Showa Denko Co., Ltd.) having a particle size of 18 μm for aluminum hydroxide, "B325" (manufactured by ALCOA) having a particle size of 25 μm, and calcium carbonate having a particle size. Examples thereof include 1.8 μm “Whiten SB Red” (manufactured by Bikita Powder Industry Co., Ltd.) and “BF300” (manufactured by Bikita Powder Industry Co., Ltd.) having a particle size of 8 μm.
さらに、熱膨張性耐火材を構成する樹脂組成物は、膨張断熱層の強度を増加させ防火性能を向上させるために、前記の各成分に加えて、さらにリン化合物を含んでもよい。リン化合物としては、特に限定されず、例えば、赤リン；トリフェニルホスフェート、トリクレジルホスフェート、トリキシレニルホスフェート、クレジルジフェニルホスフェート、キシレニルジフェニルホスフェート等の各種リン酸エステル；リン酸ナトリウム、リン酸カリウム、リン酸マグネシウム等のリン酸金属塩；ポリリン酸アンモニウム類；下記化学式（１）で表される化合物等が挙げられる。これらのうち、防火性能の観点から、赤リン、ポリリン酸アンモニウム類、及び、下記化学式（１）で表される化合物が好ましく、性能、安全性、コスト等の点においてポリリン酸アンモニウム類がより好ましい。 Further, the resin composition constituting the heat-expandable refractory material may further contain a phosphorus compound in addition to the above-mentioned components in order to increase the strength of the expansion heat insulating layer and improve the fire protection performance. The phosphorus compound is not particularly limited, and for example, various phosphoric acid esters such as red phosphorus; triphenyl phosphate, tricresyl phosphate, trixylenyl phosphate, cresil diphenyl phosphate, xylenyl diphenyl phosphate; sodium phosphate, Metal phosphates such as potassium phosphate and magnesium phosphate; ammonium polyphosphates; compounds represented by the following chemical formula (1) can be mentioned. Of these, red phosphorus, ammonium polyphosphate, and the compound represented by the following chemical formula (1) are preferable from the viewpoint of fire prevention performance, and ammonium polyphosphate is more preferable from the viewpoint of performance, safety, cost, and the like. ..
化学式（１）中、Ｒ１及びＲ３は、水素、炭素数１〜１６の直鎖状あるいは分岐状のアルキル基、または、炭素数６〜１６のアリール基を表す。Ｒ２は、水酸基、炭素数１〜１６の直鎖状あるいは分岐状のアルキル基、炭素数１〜１６の直鎖状あるいは分岐状のアルコキシル基、炭素数６〜１６のアリール基、または、炭素数６〜１６のアリールオキシ基を表す。 In the chemical formula (1), R1 and R3 represent hydrogen, a linear or branched alkyl group having 1 to 16 carbon atoms, or an aryl group having 6 to 16 carbon atoms. R2 is a hydroxyl group, a linear or branched alkyl group having 1 to 16 carbon atoms, a linear or branched alkoxyl group having 1 to 16 carbon atoms, an aryl group having 6 to 16 carbon atoms, or a carbon number of carbon atoms. Represents 6 to 16 aryloxy groups.
赤リンとしては、市販の赤リンを用いることができるが、耐湿性、混練時に自然発火しない等の安全性の点から、赤リン粒子の表面を樹脂でコーティングしたもの等が好適に用いられる。ポリリン酸アンモニウム類としては特に限定されず、例えば、ポリリン酸アンモニウム、メラミン変性ポリリン酸アンモニウム等が挙げられるが、取り扱い性等の点からポリリン酸アンモニウムが好適に用いられる。市販品としては、例えば、クラリアント社製「ＡＰ４２２」、「ＡＰ４６２」、Ｂｕｄｅｎｈｅｉｍ Ｉｂｅｒｉｃａ社製「ＦＲ ＣＲＯＳ ４８４」、「ＦＲ ＣＲＯＳ ４８７」等が挙げられる。 As the red phosphorus, commercially available red phosphorus can be used, but from the viewpoint of moisture resistance and safety such as not spontaneously igniting during kneading, those in which the surface of the red phosphorus particles is coated with a resin are preferably used. Ammonium polyphosphate is not particularly limited, and examples thereof include ammonium polyphosphate and melamine-modified ammonium polyphosphate. Ammonium polyphosphate is preferably used from the viewpoint of handleability and the like. Examples of commercially available products include "AP422" and "AP462" manufactured by Clariant AG, "FR CROS 484" and "FR CROS 487" manufactured by Budenheim Ibica.
化学式（１）で表される化合物としては特に限定されず、例えば、メチルホスホン酸、メチルホスホン酸ジメチル、メチルホスホン酸ジエチル、エチルホスホン酸、プロピルホスホン酸、ブチルホスホン酸、２−メチルプロピルホスホン酸、ｔ−ブチルホスホン酸、２，３−ジメチル−ブチルホスホン酸、オクチルホスホン酸、フェニルホスホン酸、ジオクチルフェニルホスホネート、ジメチルホスフィン酸、メチルエチルホスフィン酸、メチルプロピルホスフィン酸、ジエチルホスフィン酸、ジオクチルホスフィン酸、フェニルホスフィン酸、ジエチルフェニルホスフィン酸、ジフェニルホスフィン酸、ビス（４−メトキシフェニル）ホスフィン酸等が挙げられる。中でも、ｔ−ブチルホスホン酸は、高価ではあるが、高難燃性の点において好ましい。前記のリン化合物は、単独で用いても、２種以上を併用してもよい。 The compound represented by the chemical formula (1) is not particularly limited, and for example, methylphosphonate, dimethyl methylphosphonate, diethyl methylphosphonate, ethylphosphonate, propylphosphonate, butylphosphonic acid, 2-methylpropylphosphonate, t- Butylphosphonic acid, 2,3-dimethyl-butylphosphonate, octylphosphonate, phenylphosphonic acid, dioctylphenylphosphonate, dimethylphosphonate, methylethylphosphonate, methylpropylphosphinic acid, diethylphosphonate, dioctylphosphonate, phenylphosphine Examples thereof include acids, diethylphenylphosphonates, diphenylphosphonates, and bis (4-methoxyphenyl) phosphonates. Among them, t-butylphosphonic acid is preferable in terms of high flame retardancy, although it is expensive. The phosphorus compounds may be used alone or in combination of two or more.
前記樹脂組成物は、前記熱可塑性樹脂やエポキシ樹脂等の樹脂成分１００重量部に対し、前記熱膨張性層状無機物を１０〜３５０重量部及び前記無機充填材を３０〜４００重量部の範囲で含むものが好ましい。 The resin composition contains 10 to 350 parts by weight of the thermally expandable layered inorganic substance and 30 to 400 parts by weight of the inorganic filler with respect to 100 parts by weight of the resin component such as the thermoplastic resin or the epoxy resin. Is preferable.
また、前記熱膨張性層状無機物および前記無機充填材の合計は、樹脂成分１００重量部に対し、５０〜６００重量部の範囲が好ましい。 The total amount of the thermally expandable layered inorganic substance and the inorganic filler is preferably in the range of 50 to 600 parts by weight with respect to 100 parts by weight of the resin component.
かかる樹脂組成物は加熱によって膨張し耐火断熱層を形成する。この配合によれば、前記熱膨張性耐火材は火災等の加熱によって膨張し、必要な体積膨張率を得ることができ、膨張後は所定の断熱性能を有すると共に所定の強度を有する残渣を形成することもでき、安定した防火性能を達成することができる。 Such a resin composition expands by heating to form a refractory heat insulating layer. According to this composition, the heat-expandable refractory material expands by heating such as a fire to obtain a required coefficient of thermal expansion, and after expansion, a residue having a predetermined heat insulating performance and a predetermined strength is formed. It is also possible to achieve stable fire protection performance.
前記樹脂組成物における熱膨張性層状無機物及び無機充填材の合計量は、５０重量部以上では燃焼後の残渣量を満足して十分な耐火性能が得られ、６００重量部以下であると機械的物性が維持される。 When the total amount of the thermally expandable layered inorganic substance and the inorganic filler in the resin composition is 50 parts by weight or more, sufficient fire resistance is obtained by satisfying the residual amount after combustion, and when it is 600 parts by weight or less, it is mechanical. Physical characteristics are maintained.
さらに本発明に使用する前記樹脂組成物は、それぞれ本発明の目的を損なわない範囲で、必要に応じて、フェノール系、アミン系、イオウ系等の酸化防止剤の他、金属害防止剤、帯電防止剤、安定剤、架橋剤、滑剤、軟化剤、顔料、粘着付与樹脂、成型補助材等の添加剤、ポリブテン、石油樹脂等の粘着付与剤を含むことができる。 Further, the resin composition used in the present invention is, if necessary, an antioxidant such as a phenol-based, amine-based, or sulfur-based antioxidant, a metal damage inhibitor, and an antistatic agent, as long as the object of the present invention is not impaired. Additives such as inhibitors, stabilizers, cross-linking agents, lubricants, softeners, pigments, tackifier resins, molding aids, and tackifiers such as polybutene and petroleum resins can be included.
熱膨張性耐火材は市販品として入手可能であり、例えば、住友スリーエム社製のファイアバリア（クロロプレンゴムとバーミキュライトを含有する樹脂組成物からなる熱膨張性耐火材、膨張率：３倍、熱伝導率：０．２０ｋｃａｌ／ｍ・ｈ・℃）、三井金属塗料社のメジヒカット（ポリウレタン樹脂と熱膨張性黒鉛を含有する樹脂組成物からなる熱膨張性耐火材、膨張率：４倍、熱伝導率：０．２１ｋｃａｌ／ｍ・ｈ・℃）、積水化学工業社製フィブロック等の熱膨張性耐火材等も挙げられる。 The heat-expandable fire-resistant material is available as a commercial product. For example, a fire barrier manufactured by Sumitomo 3M Co., Ltd. (a heat-expandable fire-resistant material composed of a resin composition containing chloropurene rubber and vermiculite, expansion coefficient: 3 times, thermal conductivity Rate: 0.20 kcal / m · h · ° C), Mitsui Kinzoku Paint Co., Ltd.'s Medihicut (coefficient of thermal expansion consisting of a resin composition containing polyurethane resin and heat-expandable graphite, coefficient of expansion: 4 times, thermal conductivity : 0.21 kcal / m · h · ° C), thermal expansion fireproof materials such as fiblock manufactured by Sekisui Chemical Industry Co., Ltd. can also be mentioned.
前記熱膨張性耐火材は、火災時などの高温にさらされた際にその膨張層により断熱し、かつその膨張層の強度があるものであれば特に限定されないが、５０ｋＷ／ｍ２の加熱条件下で３０分間加熱した後の体積膨張率が３〜５０倍のものであれば好ましい。前記体積膨張率が３倍以上であると、膨張体積が前記樹脂成分の焼失部分を十分に埋めることができ、また５０倍以下であると、膨張層の強度が維持され、火炎の貫通を防止する効果が保たれる。 The heat-expandable refractory material is not particularly limited as long as it is insulated by the expansion layer when exposed to a high temperature such as in a fire and the expansion layer has strength, but the heating condition is 50 kW / m2. It is preferable that the volume expansion coefficient after heating for 30 minutes is 3 to 50 times. When the volume expansion coefficient is 3 times or more, the expansion volume can sufficiently fill the burned portion of the resin component, and when the expansion volume is 50 times or less, the strength of the expansion layer is maintained and the penetration of flame is prevented. The effect is maintained.
図５は、防火構造１０を構築する手順を示す断面図である。上述した防火構造１０は、以下の（Ａ）〜（Ｅ）の作業を順次実行することで構築される。 FIG. 5 is a cross-sectional view showing a procedure for constructing the fireproof structure 10. The fireproof structure 10 described above is constructed by sequentially executing the following operations (A) to (E).
（Ａ）区画体１１に貫通孔１２を形成する。
（Ｂ）図５（ａ）に示すように、区画体１１の貫通孔１２に配線５あるいは配管を通す。
（Ｃ）図５（ｂ）に示すように、貫通孔１２の外側に延び出た配線５あるいは配管の範囲に貫通孔カバー１を被せる。この際には、フランジ部３が区画体１１の反対側に位置するように、貫通孔カバー１の向きを調整する。また、図３に示すように貫通孔カバー１の切り込み８の幅を拡げて、配線５あるいは配管を、切り込み８から本体２の内側に入れ、ヒレ部４ａ，４ｂの突出片６の先端で囲まれる範囲（間隙７の交差点）に位置付ける。
（Ｄ）図５（ｃ）に示すように、配線５あるいは配管に沿って貫通孔カバー１をスライドさせて、本体２を貫通孔１２内に挿入し、フランジ部３を区画体１１の壁面に沿わせる。これにより、本体２が貫通孔１２に配置されるとともに、本体２の内部に配線５あるいは配管が内挿された状態になる。
（Ｅ）フランジ部３を、接着剤や粘着剤、粘着テープ、ビスなどを用いて区画体１１の壁面に固着することで、貫通孔カバー１を区画体１１に固定する。
(A) A through hole 12 is formed in the compartment 11.
(B) As shown in FIG. 5A, the wiring 5 or the pipe is passed through the through hole 12 of the compartment 11.
(C) As shown in FIG. 5 (b), the through hole cover 1 covers the range of the wiring 5 or the pipe extending to the outside of the through hole 12. At this time, the orientation of the through hole cover 1 is adjusted so that the flange portion 3 is located on the opposite side of the compartment 11. Further, as shown in FIG. 3, the width of the notch 8 of the through hole cover 1 is widened, and the wiring 5 or the pipe is inserted from the notch 8 into the inside of the main body 2 and surrounded by the tips of the protruding pieces 6 of the fin portions 4a and 4b. It is positioned within the range (intersection of gap 7).
(D) As shown in FIG. 5 (c), the through hole cover 1 is slid along the wiring 5 or the pipe, the main body 2 is inserted into the through hole 12, and the flange portion 3 is placed on the wall surface of the compartment 11. Follow. As a result, the main body 2 is arranged in the through hole 12, and the wiring 5 or the pipe is inserted inside the main body 2.
(E) The through-hole cover 1 is fixed to the compartment 11 by fixing the flange portion 3 to the wall surface of the compartment 11 with an adhesive, an adhesive, an adhesive tape, a screw, or the like.
図６は、防火構造１０を構築する別の手順を示す断面図である。防火構造１０は、以下の（Ｆ）〜（Ｉ）の手順を順次実行することによっても構築できる。 FIG. 6 is a cross-sectional view showing another procedure for constructing the fire protection structure 10. The fire protection structure 10 can also be constructed by sequentially executing the following steps (F) to (I).
（Ｆ）区画体１１に貫通孔１２を形成する。
（Ｇ）図６（ａ）に示すように、貫通孔カバー１の本体２を貫通孔１２に挿入する。この際には、フランジ部３を設けていない本体２の他端側から貫通孔１２内に挿入し、フランジ部３を区画体１１の壁面に沿わせる。
（Ｈ）図６（ｂ）に示すように、配線５あるいは配管を本体２内に挿通する。この際には、配線５あるいは配管を、ヒレ部４ａ，４ｂの突出片６の先端で囲まれる範囲（間隙７の交差点）に通す。
（Ｉ）フランジ部３を、接着剤や粘着剤、粘着テープ、ビスなどを用いて区画体１１の壁面に固着することで、貫通孔カバー１を区画体１１に固定する。
(F) A through hole 12 is formed in the compartment 11.
(G) As shown in FIG. 6A, the main body 2 of the through hole cover 1 is inserted into the through hole 12. At this time, the flange portion 3 is inserted into the through hole 12 from the other end side of the main body 2 not provided with the flange portion 3, and the flange portion 3 is aligned with the wall surface of the compartment 11.
(H) As shown in FIG. 6B, the wiring 5 or the pipe is inserted into the main body 2. At this time, the wiring 5 or the pipe is passed through the range (intersection of the gap 7) surrounded by the tips of the protruding pieces 6 of the fin portions 4a and 4b.
(I) The through-hole cover 1 is fixed to the compartment 11 by fixing the flange portion 3 to the wall surface of the compartment 11 with an adhesive, an adhesive, an adhesive tape, a screw, or the like.
上述の手順で防火構造１０が構築されて、防火区画Ａ，Ｂのいずれか一方の区画で火災が生じた場合には、貫通孔１２を伝わる火災の熱によって、貫通孔カバー１（本体２・ヒレ部４ａ，４ｂ・フランジ部３）が膨張する。そして、この膨張した貫通孔カバー１が、貫通孔１２の空隙を閉塞するので、他方の区画に火災が伝搬することが防止される。 When the fire prevention structure 10 is constructed by the above procedure and a fire occurs in either of the fire prevention sections A and B, the heat of the fire transmitted through the through hole 12 causes the through hole cover 1 (main body 2). The fin portions 4a and 4b and the flange portion 3) expand. Then, since the expanded through-hole cover 1 closes the gap of the through-hole 12, the fire is prevented from propagating to the other section.
本実施形態によれば、本体２やフランジ部３やヒレ部４ａ，４ｂが熱膨張性を有することで、貫通孔カバー１を貫通孔１２に挿入する簡易な作業で耐火処理を実現できる。このため、耐火パテを埋める煩雑な作業を要しない。また、本体２やフランジ部３やヒレ部４ａ，４ｂが樹脂素材から形成されるため、貫通孔カバー１の重量は軽い。したがって、貫通孔カバー１を施工位置に運ぶ作業や、貫通孔カバー１を貫通孔１２に挿入する作業が容易である。以上のことから、貫通孔１２の耐火処理を容易に実現できる。 According to the present embodiment, since the main body 2, the flange portion 3, and the fin portions 4a and 4b have thermal expansion properties, the fireproof treatment can be realized by a simple operation of inserting the through hole cover 1 into the through hole 12. Therefore, the complicated work of filling the refractory putty is not required. Further, since the main body 2, the flange portion 3, and the fin portions 4a and 4b are formed of the resin material, the weight of the through hole cover 1 is light. Therefore, it is easy to carry the through hole cover 1 to the construction position and to insert the through hole cover 1 into the through hole 12. From the above, the fireproof treatment of the through hole 12 can be easily realized.
また、複数のヒレ部４が本体２の長手方向に間隔をあけて設けられるので、これらヒレ部４により配線５等を張った状態で支持することができる。 Further, since the plurality of fin portions 4 are provided at intervals in the longitudinal direction of the main body 2, the fin portions 4 can support the wiring 5 and the like in a stretched state.
また、本体２の一端に設けたフランジ部３を区画体１１の壁面に沿わせることで、貫通孔カバー１が貫通孔１２の奥に入り込むことを防止できる。 Further, by aligning the flange portion 3 provided at one end of the main body 2 along the wall surface of the compartment 11, it is possible to prevent the through hole cover 1 from entering the depth of the through hole 12.
また、本体２の長手方向の一端或いは他端から視る側面視において、ヒレ部４ａの間隙７と、ヒレ部４ｂの間隙７とが重なっていないことで、貫通孔カバー１を通じて、防火区画Ａ，Ｂの一方から他方へ光が漏れることを防止できる。また、貫通孔カバー１内の気密性を高めることができ、火が貫通孔カバー１を通過することを阻止できる。 Further, in the side view viewed from one end or the other end in the longitudinal direction of the main body 2, the gap 7 of the fin portion 4a and the gap 7 of the fin portion 4b do not overlap, so that the fire prevention section A is passed through the through hole cover 1. , B can be prevented from leaking light from one to the other. Further, the airtightness inside the through hole cover 1 can be improved, and the fire can be prevented from passing through the through hole cover 1.
また、貫通孔カバー１が略半割りの状態とされているので、図５（ａ）に示すように区画体１１の貫通孔１２に配線５あるいは配管が既に挿入されている状況においても、本体２を貫通孔１２に配置して、本体２の内部に配線５あるいは配管を内挿した状態にすることができる（図５（ｃ））。 Further, since the through hole cover 1 is in a substantially half-divided state, even in a situation where the wiring 5 or the pipe is already inserted into the through hole 12 of the compartment 11 as shown in FIG. 5A, the main body is used. 2 can be arranged in the through hole 12 so that the wiring 5 or the pipe is inserted inside the main body 2 (FIG. 5 (c)).
なお図１では、本体２の長さが区画体１１の貫通孔１２の幅に一致することで、貫通孔１２の全幅に亘って貫通孔カバー１が配置される例を示したが、本体２の長さは、貫通孔１２の幅より短くてもよい。この場合には、貫通孔カバー１が配置されていない貫通孔１２の範囲に、金属製のスリーブが配置され得る。或いは図７に示すように、貫通孔１２の両側から２つの貫通孔カバー１，１の本体２，２を貫通孔１２に挿入して、これら本体２，２内に配線５あるいは配管を挿通させてもよい。 Note that FIG. 1 shows an example in which the through-hole cover 1 is arranged over the entire width of the through-hole 12 by matching the length of the main body 2 with the width of the through-hole 12 of the compartment 11. The length of the through hole 12 may be shorter than the width of the through hole 12. In this case, the metal sleeve may be arranged in the range of the through hole 12 in which the through hole cover 1 is not arranged. Alternatively, as shown in FIG. 7, the main bodies 2 and 2 of the two through hole covers 1 and 1 are inserted into the through holes 12 from both sides of the through hole 12, and the wiring 5 or the pipe is inserted into the main bodies 2 and 2. You may.
図８は、第２実施形態に係る防火構造２０を示す断面図である。図９は、第２実施形態に係る貫通孔カバー３０を示す斜視図である。以下、これらの図を参照して本発明の第２実施形態について説明する。なお以下では、第１実施形態と相違する点を中心に説明し、第１実施形態と共通する点については同一の符号を付して、詳細な説明を省略する。 FIG. 8 is a cross-sectional view showing the fire protection structure 20 according to the second embodiment. FIG. 9 is a perspective view showing the through hole cover 30 according to the second embodiment. Hereinafter, the second embodiment of the present invention will be described with reference to these figures. In the following, the points different from those of the first embodiment will be mainly described, the points common to the first embodiment will be designated by the same reference numerals, and detailed description thereof will be omitted.
第２実施形態に係る防火構造２０は、区画体２１と、貫通孔カバー３０とを備える。区画体２１は、両側に石膏ボード２２，２２を固定した二重壁であり、上下方向に延びる。各石膏ボード２２には、防火区画Ａ，Ｂを連通させる貫通孔２３が形成される。 The fireproof structure 20 according to the second embodiment includes a compartment 21 and a through hole cover 30. The compartment 21 is a double wall in which gypsum boards 22 and 22 are fixed on both sides, and extends in the vertical direction. Each gypsum board 22 is formed with a through hole 23 for communicating the fireproof compartments A and B.
貫通孔カバー３０は、本体２と、フランジ部３と、ヒレ部４ｃ，４ｄ，４ｅとを備えており、これらは、上述した熱膨張性の耐火樹脂素材から形成される。なお、フランジ部３は、熱膨張性を有しないものであってもよい。 The through-hole cover 30 includes a main body 2, a flange portion 3, and fin portions 4c, 4d, and 4e, which are formed of the above-mentioned heat-expandable refractory resin material. The flange portion 3 may not have thermal expansion property.
第２実施形態に係る貫通孔カバー３０では、本体２の長手方向の途中位置に、本体２の径外側に突出するフランジ部３が形成されており、フランジ部３を境とする本体２の長手方向の一端側の範囲２ａと他端側の範囲２ｂとのうち、一端側の範囲２ａの長さは、他端側の範囲２ｂの長さよりも、長くなっている。本体２の一端側範囲２ａの内部には、ヒレ部４ｃとヒレ部４ｄとが設けられる。本体２の他端側範囲２ｂの内部には、ヒレ部４ｅが設けられる。これらヒレ部４ｃ，４ｄ，４ｅは、６つの突出片６が放射状の間隙７を介して本体２の内周面の周方向に並ぶものであり、突出片６の各々は、本体２の内周面から径内側に突出する。また、本体２の長手方向の一端又は他端から視る側面視において、一のヒレ部４における間隙７は、他のヒレ部４における間隙７と重ならないように形成されている。 In the through-hole cover 30 according to the second embodiment, a flange portion 3 protruding outward from the diameter of the main body 2 is formed at an intermediate position in the longitudinal direction of the main body 2, and the length of the main body 2 with the flange portion 3 as a boundary. Of the range 2a on one end side and the range 2b on the other end side in the direction, the length of the range 2a on the one end side is longer than the length of the range 2b on the other end side. A fin portion 4c and a fin portion 4d are provided inside the one end side range 2a of the main body 2. A fin portion 4e is provided inside the other end side range 2b of the main body 2. In these fin portions 4c, 4d, 4e, six protruding pieces 6 are arranged in the circumferential direction of the inner peripheral surface of the main body 2 through the radial gap 7, and each of the protruding pieces 6 is the inner circumference of the main body 2. It protrudes inward from the surface. Further, in the side view viewed from one end or the other end in the longitudinal direction of the main body 2, the gap 7 in one fin portion 4 is formed so as not to overlap with the gap 7 in the other fin portion 4.
図８に示すように、本体２の他端側範囲２ｂは、石膏ボード２２，２２の一方の貫通孔２３に挿入され、本体２の一端側範囲２ａは、区画体２１の外側に延び出される。そして、本体２に配線５あるいは配管が内挿されて、ヒレ部４ｃ，４ｄ，４ｅの突出片６の先端によって配線５あるいは配管の周囲が囲まれている。 As shown in FIG. 8, the other end side range 2b of the main body 2 is inserted into one through hole 23 of the gypsum boards 22 and 22, and the one end side range 2a of the main body 2 extends to the outside of the compartment 21. .. Then, the wiring 5 or the pipe is inserted into the main body 2, and the periphery of the wiring 5 or the pipe is surrounded by the tip of the protruding piece 6 of the fin portions 4c, 4d, 4e.
図１０は、防火構造２０を構築する別の手順を示す断面図である。防火構造２０は、以下の手順（Ｊ）〜（Ｍ）を順次実行することで構築される。
（Ｊ）区画体２１に貫通孔２３を形成する。
（Ｋ）図１０（ａ）に示すように、防火区画Ａ，Ｂの一方から（図示の例では防火区画Ａから）、本体２の他端側範囲２ｂを区画体２１の貫通孔２３に挿入し、フランジ部３を区画体２１の壁面に沿わせる。
（Ｌ）図１０（ｂ）に示すように、防火区画Ａ，Ｂの一方から（図示の例では防火区画Ａから）、配線５あるいは配管を本体２内に挿通する。この際には、配線５あるいは配管を、ヒレ部４ｃ，４ｄ，４ｅの突出片６の先端で囲まれる範囲（間隙７の交差点）に通す。
（Ｍ）フランジ部３を、接着剤や粘着剤、粘着テープ、ビスなどを用いて区画体２１の壁面に固着することで、貫通孔カバー３０を区画体２１に固定する。
FIG. 10 is a cross-sectional view showing another procedure for constructing the fire protection structure 20. The fire protection structure 20 is constructed by sequentially executing the following steps (J) to (M).
(J) A through hole 23 is formed in the compartment 21.
(K) As shown in FIG. 10A, the other end side range 2b of the main body 2 is inserted into the through hole 23 of the compartment 21 from one of the fire protection compartments A and B (from the fire protection compartment A in the illustrated example). Then, the flange portion 3 is placed along the wall surface of the compartment 21.
(L) As shown in FIG. 10B, the wiring 5 or the pipe is inserted into the main body 2 from one of the fire protection compartments A and B (from the fire protection compartment A in the illustrated example). At this time, the wiring 5 or the pipe is passed through the range (intersection of the gap 7) surrounded by the tips of the protruding pieces 6 of the fin portions 4c, 4d, 4e.
(M) The through-hole cover 30 is fixed to the compartment 21 by fixing the flange portion 3 to the wall surface of the compartment 21 using an adhesive, an adhesive, an adhesive tape, a screw, or the like.
なお図示を省略するが、第２実施形態でも、貫通孔カバー３０の本体２に、長手方向の一端から他端まで延びる切り込みを形成し、この切り込みにヒレ部４ｃ，４ｄ，４ｅの１つの間隙７を連続させることで、貫通孔カバー３０が略半割りの状態とされてもよい。この場合、以下の手順（Ｎ）〜（Ｒ）を順次実行することで防火構造２０を構築できる。 Although not shown, in the second embodiment as well, a notch extending from one end to the other end in the longitudinal direction is formed in the main body 2 of the through hole cover 30, and one gap of the fin portions 4c, 4d, 4e is formed in this notch. By making 7 continuous, the through-hole cover 30 may be in a substantially half-split state. In this case, the fire protection structure 20 can be constructed by sequentially executing the following steps (N) to (R).
（Ｎ）区画体２１に貫通孔２３を形成する。
（Ｏ）防火区画Ａ，Ｂの一方から、区画体２１の貫通孔２３に配線５あるいは配管を通す。
（Ｐ）防火区画Ａ，Ｂの一方において、貫通孔２３の外側に延び出た配線５あるいは配管の範囲に貫通孔カバー３０を被せる。この際には、本体の他端側範囲２ｂが区画体１１側に位置するように、貫通孔カバー３０の向きを調整する。また、本体２の切り込みの幅を拡げて、配線５あるいは配管を、切り込みから本体２の内側に入れ、ヒレ部４ｃ，４ｄ，４ｅの突出片６の先端で囲まれる範囲（間隙７の交差点）に位置付ける。
（Ｑ）配線５あるいは配管に沿って貫通孔カバー３０をスライドさせて、本体２の他端側範囲２ｂを貫通孔２３内に挿入し、フランジ部３を区画体２１の壁面に沿わせる。これにより、本体２の他端側範囲２ｂが貫通孔２３に配置されるとともに、本体２の内部に配線５あるいは配管が内挿された状態になる。
（Ｒ）フランジ部３を、接着剤や粘着剤、粘着テープ、ビスなどを用いて区画体２１の壁面に固着することで、貫通孔カバー３０を区画体２１に固定する。
(N) A through hole 23 is formed in the compartment 21.
(O) From one of the fireproof compartments A and B, pass the wiring 5 or the pipe through the through hole 23 of the compartment 21.
(P) In one of the fire protection sections A and B, the through hole cover 30 covers the range of the wiring 5 or the pipe extending to the outside of the through hole 23. At this time, the orientation of the through hole cover 30 is adjusted so that the other end side range 2b of the main body is located on the partition body 11 side. Further, the width of the notch in the main body 2 is widened, the wiring 5 or the pipe is inserted from the notch into the inside of the main body 2, and the range surrounded by the tips of the protruding pieces 6 of the fin portions 4c, 4d, 4e (intersection of the gap 7). Positioned in.
(Q) The through hole cover 30 is slid along the wiring 5 or the pipe, the other end side range 2b of the main body 2 is inserted into the through hole 23, and the flange portion 3 is aligned with the wall surface of the compartment 21. As a result, the other end side range 2b of the main body 2 is arranged in the through hole 23, and the wiring 5 or the pipe is inserted inside the main body 2.
The through-hole cover 30 is fixed to the compartment 21 by fixing the flange portion 3 to the wall surface of the compartment 21 using an adhesive, an adhesive, an adhesive tape, a screw, or the like.
以上の手順（Ｎ）〜（Ｒ）によれば、区画体２１の貫通孔２３に配線５あるいは配管が既に挿入されている状況においても、本体２の他端側範囲２ｂを貫通孔２３に配置し、本体２の内部に配線５あるいは配管を内挿した状態にすることができる。 According to the above procedures (N) to (R), even in a situation where the wiring 5 or the pipe is already inserted in the through hole 23 of the compartment 21, the other end side range 2b of the main body 2 is arranged in the through hole 23. Then, the wiring 5 or the piping can be inserted inside the main body 2.
上述の手順で防火構造１０が構築されて、防火区画Ａ，Ｂのいずれか一方の区画で火災が生じた場合には、貫通孔２３を伝わる火災の熱によって、貫通孔カバー３０（本体２・ヒレ部４ｃ，４ｄ，４ｅ・フランジ部３）が膨張する。そして、この膨張した貫通孔カバー３０が、貫通孔２３の空隙を閉塞するので、他方の区画に火災が伝搬することが防止される。 When the fire prevention structure 10 is constructed by the above procedure and a fire occurs in either of the fire prevention compartments A and B, the heat of the fire transmitted through the through hole 23 causes the through hole cover 30 (main body 2). The fin portions 4c, 4d, 4e and the flange portion 3) expand. Then, since the expanded through-hole cover 30 closes the gap of the through-hole 23, the fire is prevented from propagating to the other section.
第２実施形態によれば、本体２の他端側範囲２ｂが短いので、本体２の他端側範囲２ｂを貫通孔２３に挿入する作業が容易である。また、熱膨張性の耐火樹脂素材からなる本体２の一端側範囲２ａを、区画体２１の外側に長く設けることができるので、区画体２１の一方側（一端側範囲２ａの設置側）における貫通孔２３の出口を強固に封鎖することができる。これにより、区画体２１の他方側における貫通孔２３の出口を塞がなくてよいので、防火区画Ａ，Ｂの一方からの片側施工により、貫通孔２３の耐火処理を実現できる。 According to the second embodiment, since the other end side range 2b of the main body 2 is short, the work of inserting the other end side range 2b of the main body 2 into the through hole 23 is easy. Further, since the one end side range 2a of the main body 2 made of the heat-expandable refractory resin material can be provided long on the outside of the compartment 21, it penetrates on one side of the compartment 21 (the installation side of the one end side range 2a). The outlet of the hole 23 can be tightly closed. As a result, it is not necessary to block the outlet of the through hole 23 on the other side of the compartment 21, so that the fireproof treatment of the through hole 23 can be realized by one-sided construction from one of the fire prevention compartments A and B.
本発明は、上記の実施形態に限定されず、種々変更することができる。 The present invention is not limited to the above embodiment, and various modifications can be made.
例えば、上記の実施形態では、ヒレ部４を、本体２の一端・他端や他端側寄りの途中位置に設ける例を示したが、ヒレ部４を本体２の長手方向の中央位置に設けてもよい。また上記の実施形態では、ヒレ部４の数を２や３にする例を示したが、ヒレ部４の数は、２や３よりも多い複数であってもよい。この場合、本体２の長手方向の一端又は他端から視る側面視において、一のヒレ部４における放射状の間隙７は、他のヒレ部４における放射状の間隙７と重ならないように形成される。また、ヒレ部４は１つのみ設けられてもよい。 For example, in the above embodiment, the fin portion 4 is provided at one end / other end of the main body 2 or at an intermediate position near the other end side, but the fin portion 4 is provided at the center position in the longitudinal direction of the main body 2. You may. Further, in the above embodiment, an example in which the number of fin portions 4 is set to 2 or 3 is shown, but the number of fin portions 4 may be more than 2 or 3. In this case, the radial gap 7 in one fin portion 4 is formed so as not to overlap with the radial gap 7 in the other fin portion 4 when viewed from one end or the other end in the longitudinal direction of the main body 2. .. Further, only one fin portion 4 may be provided.
また、ヒレ部４を構成する突出片６の数は、上記実施形態に示す８や６に限らず、任意の複数とすることができる。また、各ヒレ部４に形成する間隙７の幅や位置も、本体２内における光の通過を防止し、本体２内の気密性を確保できる限りにおいて、任意の幅や位置に設定できる。 Further, the number of the protruding pieces 6 constituting the fin portion 4 is not limited to 8 and 6 shown in the above embodiment, and may be any plurality. Further, the width and position of the gap 7 formed in each fin portion 4 can be set to an arbitrary width and position as long as the passage of light in the main body 2 can be prevented and the airtightness in the main body 2 can be ensured.
また上記の実施形態によれば、耐火パテを埋める作業を省略できるので作業負担を軽減できる旨述べたが、本発明は、耐火パテを使用することを否定するものではなく、必要に応じて、本体２の一端や他端における内部等を耐火パテで埋めてもよい。 Further, according to the above embodiment, it has been stated that the work of filling the refractory putty can be omitted, so that the work load can be reduced. However, the present invention does not deny the use of the refractory putty, and if necessary, The inside of one end or the other end of the main body 2 may be filled with a refractory putty.
また、本発明の防火構造が備える区画体は、上下方向に延びる壁に限らず、水平方向に延びる床又は板であってもよい。この場合、区画体には上下方向の貫通孔が形成され、当該貫通孔に貫通孔カバー１，３０が挿通される。このようにすることで、区画体を介する上層階或いは下層階のいずれか一方で火災が生じたときに、貫通孔を通じて他方の階に火災が伝搬することを防止できる。また、貫通孔の上方から貫通孔カバー１，３０を挿通し、フランジ部３を上層階の床面に沿わせることで、貫通孔カバー１，３０が下方にずれ落ちて貫通孔の奥に入り込むことを防止できる。 Further, the compartment provided by the fireproof structure of the present invention is not limited to a wall extending in the vertical direction, and may be a floor or a board extending in the horizontal direction. In this case, a through hole in the vertical direction is formed in the compartment, and the through hole covers 1 and 30 are inserted through the through hole. By doing so, when a fire breaks out on either the upper floor or the lower floor through the compartment, it is possible to prevent the fire from propagating to the other floor through the through hole. Further, by inserting the through hole covers 1 and 30 from above the through hole and aligning the flange portion 3 along the floor surface of the upper floor, the through hole covers 1 and 30 slide downward and enter the depth of the through hole. Can be prevented.
１，３０ 貫通孔カバー
２ 本体
２ａ 本体の長手方向の一端側の範囲
２ｂ 本体の長手方向の一端側の範囲
３ フランジ部
４ ヒレ部
５ 配線
６ 突出片
７ 間隙
８ 切り込み
１０，２０ 防火構造
１１，２１ 区画体
１２，２３ 貫通孔
1,30 Through hole cover 2 Main body 2a Range on one end side in the longitudinal direction of the main body 2b Range on one end side in the longitudinal direction of the main body 3 Flange part 4 Fin part 5 Wiring 6 Protruding piece 7 Gap 8 Notch 10, 20 Fireproof structure 11, 21 compartments 12, 23 through holes
Claims (7)
筒状を呈し、配線あるいは配管が内挿される本体と、
前記本体の長手方向の所定位置において、前記本体の内部に設けられるヒレ部とを備え、
前記ヒレ部は、前記本体の内周面の周方向に並ぶ複数の突出片から構成され、
前記複数の突出片は、前記本体の内周面から径内側に突出しており、当該複数の突出片の先端によって、前記配線あるいは前記配管の周囲が囲まれ、
前記本体と、前記ヒレ部を構成する前記複数の突出片とは、熱膨張性を有し、
各前記ヒレ部を構成する前記複数の突出片は、前記本体の中心から放射状に延びる間隙を介して、前記本体の内周面の周方向に並んでおり、
前記ヒレ部は前記本体の長手方向に間隔をあけて複数設けられており、前記本体の長手方向の一端又は他端から視る側面視において、一の前記ヒレ部における前記放射状の間隙は、他の前記ヒレ部における前記放射状の間隙と重なっていない、貫通孔カバー。 A through-hole cover that is inserted into the through-hole of the compartment.
The main body, which has a tubular shape and in which wiring or piping is inserted,
A fin portion provided inside the main body is provided at a predetermined position in the longitudinal direction of the main body.
The fin portion is composed of a plurality of projecting pieces arranged in the circumferential direction of the inner peripheral surface of the main body.
The plurality of projecting pieces project inward in diameter from the inner peripheral surface of the main body, and the tips of the plurality of projecting pieces surround the wiring or the piping.
The main body and the plurality of projecting pieces constituting the fin portion have thermal expansion property and have thermal expansion properties.
The plurality of projecting pieces constituting each of the fin portions are arranged in the circumferential direction of the inner peripheral surface of the main body through a gap extending radially from the center of the main body.
A plurality of the fin portions are provided at intervals in the longitudinal direction of the main body, and the radial gap in one of the fin portions is the other when viewed from one end or the other end of the main body in the longitudinal direction. A through-hole cover that does not overlap with the radial gap in the fin portion of the.
筒状を呈し、配線あるいは配管が内挿される本体と、
前記本体の長手方向の所定位置において、前記本体の内部に設けられるヒレ部とを備え、
前記ヒレ部は、前記本体の内周面の周方向に並ぶ複数の突出片から構成され、
前記複数の突出片は、前記本体の内周面から径内側に突出しており、当該複数の突出片の先端によって、前記配線あるいは前記配管の周囲が囲まれ、
前記本体と、前記ヒレ部を構成する前記複数の突出片とは、熱膨張性を有し、
前記本体の長手方向の所定位置には、前記本体の径外側に突出するフランジ部が設けられ、前記フランジ部は、熱膨張性の樹脂素材から形成され、
前記フランジ部は、前記本体の長手方向の途中位置に設けられ、
前記フランジ部を境とする前記本体の長手方向の一端側の範囲と他端側の範囲とのうち、一方の範囲の長さは、他方の範囲の長さよりも長く、
前記一方の範囲と前記他方の範囲とのそれぞれにおいて、前記本体の内部に前記ヒレ部が設けられており、
前記他方の範囲が、区画体の貫通孔に挿入されるとともに、前記他方の範囲の長さは、区画体の貫通孔の長さよりも短い、貫通孔カバー。 A through-hole cover that is inserted into the through-hole of the compartment.
The main body, which has a tubular shape and in which wiring or piping is inserted,
A fin portion provided inside the main body is provided at a predetermined position in the longitudinal direction of the main body.
The fin portion is composed of a plurality of projecting pieces arranged in the circumferential direction of the inner peripheral surface of the main body.
The plurality of projecting pieces project inward in diameter from the inner peripheral surface of the main body, and the tips of the plurality of projecting pieces surround the wiring or the piping.
The main body and the plurality of projecting pieces constituting the fin portion have thermal expansion property and have thermal expansion properties.
A flange portion that protrudes outside the diameter of the main body is provided at a predetermined position in the longitudinal direction of the main body, and the flange portion is formed of a heat-expandable resin material.
The flange portion is provided at an intermediate position in the longitudinal direction of the main body.
Of the one longitudinal end of the range and the other end extent of the body to border the flange portion, the length of one of the range, rather long than the length of the other range,
In each of the one range and the other range, the fin portion is provided inside the main body.
A through hole cover in which the other range is inserted into the through hole of the compartment and the length of the other range is shorter than the length of the through hole of the compartment.
貫通孔を有する区画体とを備え、
前記貫通孔に前記貫通孔カバーの前記本体が挿入され、
前記貫通孔カバーの前記本体に配線あるいは配管が内挿されていることを特徴とする区画貫通孔の防火構造。 The through-hole cover according to any one of claims 1 to 5.
With a compartment with through holes
The main body of the through hole cover is inserted into the through hole,
A fireproof structure for a compartment through hole, characterized in that wiring or piping is inserted into the main body of the through hole cover.
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| EP3306158A1 (en) * | 2016-10-05 | 2018-04-11 | HILTI Aktiengesellschaft | Passage of a conduit through a building section |
| KR102175036B1 (en) * | 2018-06-26 | 2020-11-05 | 경기대학교 산학협력단 | Pass-through firestop apparatus |
| EP3974033A4 (en) * | 2019-05-23 | 2023-06-21 | Furukawa Electric Co., Ltd. | Fire resistant member, fire preventing structure, and method for installing fire preventing structure |
| JP7219164B2 (en) * | 2019-05-31 | 2023-02-07 | 未来工業株式会社 | Through-hole processing structure of partition and gap processing member |
| JP7311333B2 (en) * | 2019-07-04 | 2023-07-19 | 未来工業株式会社 | Gap processing member and through-hole processing structure of partition |
| JP7284048B2 (en) * | 2019-09-13 | 2023-05-30 | 未来工業株式会社 | Closing structure of closing member and through hole |
| JP7489823B2 (en) | 2019-11-15 | 2024-05-24 | 因幡電機産業株式会社 | Through hole closure |
| JP7491699B2 (en) * | 2020-01-20 | 2024-05-28 | 未来工業株式会社 | Surrounding member and installation structure for the surrounding member |
| JP7460918B2 (en) | 2021-11-30 | 2024-04-03 | ダイキン工業株式会社 | Resin bushing and electrical equipment box using same |
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| JP4125809B2 (en) * | 1997-10-01 | 2008-07-30 | 天野エンザイム株式会社 | Method for producing D-amino acid |
| US6176052B1 (en) * | 1999-05-21 | 2001-01-23 | Tosetz Co., Ltd. | Fire retarding division penetrating member |
| JP3796228B2 (en) * | 2003-04-15 | 2006-07-12 | トーセツ株式会社 | Fire prevention section through hole measures member |
| JP2005226725A (en) * | 2004-02-12 | 2005-08-25 | Mirai Kk | Fire-limit structure of penetration section and penetration section forming body forming the same |
| JP4933412B2 (en) * | 2007-02-28 | 2012-05-16 | 未来工業株式会社 | Thermally expansible fireproofing equipment and fireproof structure |
| JP4955528B2 (en) * | 2007-12-14 | 2012-06-20 | 未来工業株式会社 | Thermally expansible fireproofing equipment and fireproof structure |
| JP2014007892A (en) * | 2012-06-26 | 2014-01-16 | Mirai Ind Co Ltd | Fire resistant structure of through section |
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