JP3717991B2 - Sleeve for duct insertion of fire-resistant coated steel members - Google Patents

Sleeve for duct insertion of fire-resistant coated steel members Download PDF

Info

Publication number
JP3717991B2
JP3717991B2 JP05190796A JP5190796A JP3717991B2 JP 3717991 B2 JP3717991 B2 JP 3717991B2 JP 05190796 A JP05190796 A JP 05190796A JP 5190796 A JP5190796 A JP 5190796A JP 3717991 B2 JP3717991 B2 JP 3717991B2
Authority
JP
Japan
Prior art keywords
sleeve
hole
claws
pair
duct
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.)
Expired - Fee Related
Application number
JP05190796A
Other languages
Japanese (ja)
Other versions
JPH09242214A (en
Inventor
一仁 小澤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taisei Corp
Original Assignee
Taisei Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Taisei Corp filed Critical Taisei Corp
Priority to JP05190796A priority Critical patent/JP3717991B2/en
Publication of JPH09242214A publication Critical patent/JPH09242214A/en
Application granted granted Critical
Publication of JP3717991B2 publication Critical patent/JP3717991B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Building Environments (AREA)
  • Rod-Shaped Construction Members (AREA)

Description

【０００１】
【発明の属する技術分野】
この発明は、ダクトを耐火被覆層の厚さを確保して耐火被覆鉄骨部材に貫通させる際に使用される耐火被覆鉄骨部材のダクト挿通用スリーブに関する。
【０００２】
【従来の技術】
耐火被覆鉄骨部材として、図６及び図７に示す構造が知られている。これらの図は、床版２を支持する耐火被覆鉄骨梁４を示すものである。
【０００３】
耐火被覆梁４は、Ｈ形鋼（鉄骨部材）６の外周にアスベスト等の耐火被覆材を吹き付けて所定厚さの耐火被覆層８を設けた梁である。ここで、Ｈ形鋼６のウェブ６ａには、空調用ダクト１０を貫通させるための貫通孔１２が形成されており、この貫通孔１２の内周側にも耐火被覆層８が設けられている。
【０００４】
【発明が解決しようとする課題】
ところで、上記構造とした耐火被覆鉄骨梁４の貫通孔１２に、空調用ダクト１０を貫通する際に、貫通孔１２の内周側に設けた耐火被覆層８（図７の符号Ａで示す丸印部分）に空調用ダクト１０が接触し、貫通孔１２の周囲の耐火被覆材が剥がれてＨ形鋼６の表面が露出してしまう場合がある。そのため、耐火被覆材が剥がれた部分に、再び耐火被覆材を吹き付ける補修作業を行わなければならず、補修作業のために多くの手間と時間が費やされてしまう。
【０００５】
そこで、耐火被覆材の吹き付け作業を行う前に、貫通孔１２にダクト挿通用スリーブを溶接等により固定しておき、このダクト挿通用スリーブにより耐火被覆層８との接触を防止することが考えられるが、スリーブ固定作業のための多くのの時間が費やされ、作業コストも増大する。また、スリーブ固定作業が完了するまで、Ｈ形鋼６への耐火被覆材の吹き付け作業を開始することができないので、工事の遅延に繋がるおそれがある。
【０００６】
そこで、この発明は上記事情に鑑みてなされたものであり、単純な構造として低廉化を図り、且つ鉄骨部材への装着作業を容易として耐火被覆材の吹き付け作業に影響を与えず、且つ耐火被覆層の剥離を確実に防止することが可能な耐火被覆鉄骨部材のダクト挿通用スリーブを提供することを目的とする。
【０００７】
【課題を解決するための手段】
本発明の請求項１記載の発明は、ダクトが貫通する貫通孔を形成した鉄骨部材の周囲に所定厚さの耐火被覆層を形成する際に、前記貫通孔の周囲の耐火被覆層の厚さを均一とするために前記鉄骨部材に装着するダクト挿通用スリーブであって、前記ダクトが挿通するスリーブ本体と、このスリーブ本体の外周の周方向に所定間隔をあけて固定され、前記貫通孔の縁部との係合により前記スリーブ本体を前記貫通孔内に保持する複数のスペーサとを備え、当該スペーサを、前記スリーブ本体の外周に固定した接合板部と、この接合板の縁部から折れ曲がって前記スリーブ本体側から外方に向けて突出する支持板部とを備えた矩形板材とし、前記支持板部の先端部に先端から基端側に向けて２本の切れ込みを入れることにより、これら２本の切れ込みの外側に一対の爪を形成し、この一対の爪の間に係合片を形成し且つ当該係合片を前記一対の爪に対して外側又は内側に僅かに折り曲げた形状とし、前記一対の爪により前記貫通孔近くの両側面を挟み込むとともに、前記一対の爪間に位置した前記貫通孔の内周面に対して、外側又は内側に折り曲がった前記係合片が弾性反力を作用する構造とした。
【０００９】
【発明の実施の形態】
以下、本発明の耐火被覆鉄骨のダクト挿通用スリーブの一実施形態について、図面に基づいて説明する。なお、図６及び図７に示した構成と同一構成部分については、同一符号を付してその説明を省略する。
【００１０】
図１及び図２は、本実施形態のダクト挿通用スリーブ２０を装着した耐火被覆鉄骨梁２２を示すものである。
ダクト挿通用スリーブ２０は、空調用ダクト１０より大径の鋼管からなるスリーブ本体２４と、このスリーブ本体２２の外周の周方向に９０度の間隔をあけて固定された４個のスペーサ２６とで構成されている。
【００１１】
各スペーサ２６は矩形状の金属板により形成されており、図３に示すように、、長手方向の中央部に設けられた接合板部２８と、この接合板の両縁部から側面視逆ハＶ字形となるように折り曲げられた一対の支持板部３０とを備えている。
【００１２】
そして、各支持板部３０の先端部には、先端から基端側に向けて互いに平行に２本の切れ込みＣ1 、Ｃ2 が入れられ、これら２本の切れ込みＣ1 、Ｃ2 の外側に一対の爪３２ａ、３２ｂが形成され、これら爪３２ａ、３２ｂの間に係合片３４が形成されている。また、係合片３４は、一対の爪３２ａ、３２ｂより外側に僅かに折り曲げられている。
【００１３】
ここで、２本の切れ込みＣ1 、Ｃ2 間の距離、すなわち一対の爪３２ａ、３２ｂ間の距離Ｌは、Ｈ形鋼６のウェブ６ａの厚さＴと同一寸法に設定されている。そして、各スペーサ２６は、スリーブ本体２４の外周の周方向に９０度の間隔をあけた位置に、接合板部２８を点溶接等の接合手段により接合することにより一体化され、これにより、一対の支持板部３０はスリーブ本体２２から放射状に突出する。
【００１４】
上記構成のダクト挿通用スリーブ２０は、貫通孔１２内にスリーブ本体２４を挿入するとともに、図５に示すように、４個のスペーサ２６の各一対の爪３２ａ、３２ｂにより、貫通孔１２近くの両側面を挟み込むだけで、貫通孔１２内に装着される。この際、係合片３４は、図４に示すように、貫通孔１２の内周面に当接して外側に折り曲げられていくが、その弾性反力が貫通孔１２の内周面に作用して押圧するので、スリーブ本体２４の径方向の移動が拘束される。
【００１５】
そして、貫通孔１２へのダクト挿通用スリーブ２０の装着が完了した後、Ｈ形鋼６の外周に向けて耐火被覆材の吹き付け作業を行うと、Ｈ形鋼６の表面が露出せずに耐火被覆層８を均一に設けた耐火被覆鉄骨梁２２が形成される。
【００１６】
このように、本実施形態のダクト挿通用スリーブ２０は、貫通孔１２内にスリーブ本体２４を挿入し、各スペーサ２６の一対の爪３２ａ、３２ｂで貫通孔１２近くの両側面を挟み込むことにより、貫通孔１２内に簡単に装着されるので、スリーブ固定するための作業時間や作業コストを大幅に低減することができる。
【００１７】
しかも、貫通孔１２の内周面に当接して外側に折り曲げられた各スペーサ２６の係合片３４は、自身の弾性反力により貫通孔１２の内周面を押圧してスリーブ本体２４の径方向の移動を拘束するので、ダクト挿通用スリーブ２０を貫通孔１２に確実に装着することができる。
【００１８】
また、簡単にダクト挿通用スリーブ２０を装着することができるので、Ｈ形鋼６に対する耐火被覆材の吹き付け作業をすぐに開始することができ、工事が遅延することがない。そして、貫通孔１２にダクト挿通用スリーブ２０を装着した後にＨ形鋼６の外周に向けて耐火被覆材の吹き付け作業を行うことにより、貫通孔１２の周囲などにＨ形鋼６の表面を露出せず均一の耐火被覆層８を設けることができる。
【００１９】
さらに、ダクト挿通用スリーブ２０は、鋼管からなるスリーブ本体２４と、スリーブ本体の外周の周方向に等間隔に固定された４個のスペーサ２６とからなる単純な構成なので、安価なスリーブを提供することができる。
【００２０】
なお、本実施形態では、ウェブ６ａに貫通孔１２を形成したＨ形鋼６を鉄骨部材として説明したが、本発明の要旨がこれに限定されるものではなく、他の鋼材、例えばＩ形鋼、丸形鋼管、角形鋼管を鉄骨部材とし、この鉄骨部材に貫通孔を形成して耐火被覆鉄骨梁を形成しても同様の作用効果を得ることができる。
【００２１】
また、本実施形態で示した耐火被覆鉄骨梁２２のみに限定されるものではなく、耐火被覆鉄骨柱であっても、同様の作用効果を得ることができる。
また、スリーブ本体２４の外周に固定されているスペーサ２６の数は本実施形態のように４個に限るものではなく、スリーブ本体２４を確実に保持することができれば増減してもよい。
【００２２】
また、各スペーサ２６の先端部に形成した係合片３４は、一対の爪３２ａ、３２ｂに対して内側に折れ曲がっていても、自身の弾性反力により貫通孔１２の内周面を押圧してスリーブ本体２４の径方向の移動を拘束することができる。
【００２３】
【発明の効果】
以上説明したように、請求項１記載の耐火被覆鉄骨部材のダクト挿通用スリーブは、貫通孔内にスリーブ本体を挿入し、このスリーブ本体の外周の周方向に所定間隔をあけて固定された複数のスペーサを貫通孔の縁部に係合することにより、貫通孔内に簡単に装着することができるので、スリーブ固定のための作業時間や作業コストを大幅に低減することができる。
【００２４】
また、簡単にダクト挿通用スリーブを装着することができるので、耐火被覆材の吹き付け作業をすぐに開始することができ、工事が遅延することがない。そして、貫通孔にダクト挿通用スリーブを装着した後、鉄骨部材の外周に向けて耐火被覆材の吹き付け作業を行うことにより、貫通孔の周囲などに鉄骨部材の表面を露出せず均一の耐火被覆層を設けることができる。
【００２５】
また、スペーサの先端部に形成した一対の爪が貫通孔近くの両側面を挟み込むという単純な構造により貫通孔内に装着されるので、安価なダクト挿通用スリーブを提供することができる。
【００２６】
しかも、貫通孔の内周面に当接して外側又は内側に折り曲げられた係合片は、自身の弾性反力により貫通孔の内周面を押圧してスリーブ本体の径方向の移動を拘束するので、貫通孔内に確実に装着することができる。
【図面の簡単な説明】
【図１】本発明に係る耐火被覆鉄骨梁を示す側面図である。
【図２】図１のII−II線矢視を示す断面図である。
【図３】本発明に係るスペーサを示す斜視図である。
【図４】図１の符号Ｂで示す領域を拡大した側面図である。
【図５】図４のV −V 線矢視を示す断面図である。
【図６】従来の耐火被覆鉄骨梁を示す側面図である。
【図７】図６のVII −VII 線矢視を示す断面図である。
【符号の説明】
６ Ｈ形鋼（鉄骨部材）
６ａ ウェブ
８ 耐火被覆層
１０ 空調用ダクト
１２ 貫通孔
２０ ダクト挿通用スリーブ
２４ スリーブ本体
２６ スペーサ
２８ 接合板部
３０ 支持板部
３２ａ、３２ｂ 爪
３４ 係合片
Ｃ1 、Ｃ2 切れ込み[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a duct insertion sleeve for a fire-resistant coated steel member that is used when a duct is passed through a fire-resistant coated steel member while ensuring the thickness of the fire-resistant coating layer.
[0002]
[Prior art]
The structure shown in FIG.6 and FIG.7 is known as a fireproof covering steel frame member. These drawings show the fire-resistant steel beam 4 that supports the floor slab 2.
[0003]
The fireproof covering beam 4 is a beam in which a fireproof covering layer 8 having a predetermined thickness is provided by spraying a fireproof covering material such as asbestos on the outer periphery of an H-shaped steel (steel member) 6. Here, the web 6 a of the H-shaped steel 6 is formed with a through hole 12 for allowing the air conditioning duct 10 to pass therethrough, and a fireproof coating layer 8 is also provided on the inner peripheral side of the through hole 12. .
[0004]
[Problems to be solved by the invention]
By the way, when the air-conditioning duct 10 is passed through the through-hole 12 of the fire-resistant coated steel beam 4 having the above-described structure, the fire-resistant coating layer 8 provided on the inner peripheral side of the through-hole 12 (the circle indicated by symbol A in FIG. 7). The air-conditioning duct 10 may come into contact with the mark portion), and the fireproof coating material around the through-hole 12 may be peeled off to expose the surface of the H-shaped steel 6. Therefore, the repair work of spraying the fireproof coating material again on the part where the fireproof coating material is peeled off must be performed, and much labor and time are spent for the repair work.
[0005]
Therefore, it is conceivable that a duct insertion sleeve is fixed to the through-hole 12 by welding or the like before the fireproof coating material is sprayed, and the contact with the fireproof coating layer 8 is prevented by this duct insertion sleeve. However, a lot of time is spent for the sleeve fixing operation, and the operation cost increases. Further, since the operation of spraying the fireproof coating material onto the H-section steel 6 cannot be started until the sleeve fixing operation is completed, there is a possibility that the construction may be delayed.
[0006]
Therefore, the present invention has been made in view of the above circumstances, and has a simple structure that is inexpensive and does not affect the spraying operation of the fireproof coating material, facilitates the mounting work to the steel member, and has a fireproof coating. It is an object of the present invention to provide a sleeve for inserting a duct of a fire-resistant coated steel member capable of reliably preventing layer peeling.
[0007]
[Means for Solving the Problems]
According to the first aspect of the present invention, when the fireproof coating layer having a predetermined thickness is formed around the steel member in which the through hole through which the duct passes is formed, the thickness of the fireproof coating layer around the through hole is determined. A duct insertion sleeve to be attached to the steel member in order to make uniform, and is fixed at a predetermined interval in a circumferential direction of an outer periphery of the sleeve main body through which the duct is inserted, A plurality of spacers for holding the sleeve main body in the through hole by engagement with an edge, and the spacer is bent from the edge of the joint plate, and a joint plate fixed to the outer periphery of the sleeve main body. And a rectangular plate member provided with a support plate portion projecting outward from the sleeve body side, and by making two cuts in the distal end portion of the support plate portion from the distal end to the proximal end side, 2 slices A pair of claws is formed on the outer side of the pair, an engagement piece is formed between the pair of claws, and the engagement piece is bent slightly outward or inward with respect to the pair of claws. The engaging pieces bent outward or inward act on the inner peripheral surface of the through-hole located between the pair of claws while sandwiching both side surfaces near the through-hole by the claws. The structure is
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a fire insertion coated steel duct insertion sleeve according to the present invention will be described with reference to the drawings. In addition, about the same component as the structure shown in FIG.6 and FIG.7, the same code | symbol is attached | subjected and the description is abbreviate | omitted.
[0010]
1 and 2 show a fire-resistant coated steel beam 22 equipped with a duct insertion sleeve 20 of the present embodiment.
The duct insertion sleeve 20 is composed of a sleeve body 24 made of a steel pipe having a diameter larger than that of the air conditioning duct 10 and four spacers 26 fixed at intervals of 90 degrees in the circumferential direction of the outer periphery of the sleeve body 22. It is configured.
[0011]
Each spacer 26 is formed of a rectangular metal plate. As shown in FIG. 3, the spacer 26 has a joint plate 28 provided at the center in the longitudinal direction and both edges of the joint plate, as viewed from the side. And a pair of support plate portions 30 bent so as to be V-shaped.
[0012]
Then, the distal end portion of the support plate portion 30, toward the base end side parallel to the two cut C 1, C 2 are placed in each other from the tip, on the outer side of these two cut C 1, C 2 A pair of claws 32a and 32b is formed, and an engagement piece 34 is formed between the claws 32a and 32b. Further, the engagement piece 34 is slightly bent outward from the pair of claws 32a and 32b.
[0013]
Here, the distance between the two notches C 1 and C 2 , that is, the distance L between the pair of claws 32 a and 32 b is set to the same dimension as the thickness T of the web 6 a of the H-section steel 6. The spacers 26 are integrated by joining the joining plate portions 28 by joining means such as spot welding at positions spaced by 90 degrees in the circumferential direction of the outer periphery of the sleeve body 24. The support plate 30 protrudes radially from the sleeve body 22.
[0014]
In the duct insertion sleeve 20 having the above-described configuration, the sleeve body 24 is inserted into the through-hole 12, and the pair of claws 32a and 32b of the four spacers 26 are provided near the through-hole 12 as shown in FIG. It is mounted in the through hole 12 simply by sandwiching both side surfaces. At this time, as shown in FIG. 4, the engaging piece 34 abuts on the inner peripheral surface of the through hole 12 and is bent outward, but the elastic reaction force acts on the inner peripheral surface of the through hole 12. The sleeve body 24 is restrained from moving in the radial direction.
[0015]
Then, after the installation of the duct insertion sleeve 20 to the through hole 12 is completed, when the fireproof coating material is sprayed toward the outer periphery of the H-shaped steel 6, the surface of the H-shaped steel 6 is not exposed and the fireproof The fire-resistant coated steel beam 22 with the coating layer 8 provided uniformly is formed.
[0016]
As described above, the duct insertion sleeve 20 of the present embodiment inserts the sleeve body 24 into the through hole 12 and sandwiches both side surfaces near the through hole 12 with the pair of claws 32a and 32b of each spacer 26. Since it is easily mounted in the through-hole 12, the work time and work cost for fixing the sleeve can be greatly reduced.
[0017]
In addition, the engagement pieces 34 of the spacers 26 that are bent outwardly in contact with the inner peripheral surface of the through-hole 12 press the inner peripheral surface of the through-hole 12 by their own elastic reaction force, thereby reducing the diameter of the sleeve body 24. Since the movement in the direction is restricted, the duct insertion sleeve 20 can be securely attached to the through hole 12.
[0018]
Further, since the duct insertion sleeve 20 can be easily attached, the operation of spraying the fireproof coating material on the H-section steel 6 can be started immediately, and the construction is not delayed. Then, after attaching the duct insertion sleeve 20 to the through-hole 12, the surface of the H-shaped steel 6 is exposed around the through-hole 12 by spraying the fireproof coating material toward the outer periphery of the H-shaped steel 6. Without it, a uniform fireproof coating layer 8 can be provided.
[0019]
Further, the duct insertion sleeve 20 has a simple structure including a sleeve main body 24 made of a steel pipe and four spacers 26 fixed at equal intervals in the circumferential direction of the outer periphery of the sleeve main body, so that an inexpensive sleeve is provided. be able to.
[0020]
In the present embodiment, the H-shaped steel 6 in which the through holes 12 are formed in the web 6a has been described as a steel member. However, the gist of the present invention is not limited to this, and other steel materials such as I-shaped steel are used. The same effect can be obtained even if a round steel pipe or a square steel pipe is used as a steel frame member and a through hole is formed in the steel frame member to form a fireproof coated steel beam.
[0021]
Moreover, it is not limited only to the fireproof covering steel beam 22 shown by this embodiment, Even if it is a fireproof covering steel column, the same effect can be acquired.
Further, the number of spacers 26 fixed to the outer periphery of the sleeve main body 24 is not limited to four as in this embodiment, and may be increased or decreased as long as the sleeve main body 24 can be securely held.
[0022]
Further, the engagement piece 34 formed at the tip of each spacer 26 presses the inner peripheral surface of the through hole 12 by its own elastic reaction force even if it is bent inward with respect to the pair of claws 32a and 32b. The movement of the sleeve body 24 in the radial direction can be restricted.
[0023]
【The invention's effect】
As described above, the duct insertion sleeve of the fire-resistant coated steel member according to claim 1 has a plurality of sleeves inserted into the through hole and fixed at a predetermined interval in the circumferential direction of the outer periphery of the sleeve body. By engaging the spacer with the edge of the through hole, the spacer can be easily mounted in the through hole, so that the work time and work cost for fixing the sleeve can be greatly reduced.
[0024]
Further, since the duct insertion sleeve can be easily attached, the operation of spraying the fireproof coating material can be started immediately, and the construction is not delayed. And after mounting the duct insertion sleeve in the through hole, spraying the fireproof coating material toward the outer periphery of the steel member, so that the surface of the steel member is not exposed around the through hole, etc. A layer can be provided.
[0025]
Further, since the pair of claws formed at the tip of the spacer are mounted in the through hole by a simple structure in which both side surfaces near the through hole are sandwiched, an inexpensive duct insertion sleeve can be provided.
[0026]
In addition, the engagement piece that is in contact with the inner peripheral surface of the through hole and bent outward or inward restrains the radial movement of the sleeve body by pressing the inner peripheral surface of the through hole by its own elastic reaction force. Therefore, it can be securely mounted in the through hole.
[Brief description of the drawings]
FIG. 1 is a side view showing a fireproof coated steel beam according to the present invention.
2 is a cross-sectional view taken along the line II-II in FIG.
FIG. 3 is a perspective view showing a spacer according to the present invention.
4 is an enlarged side view of a region indicated by reference sign B in FIG. 1. FIG.
5 is a cross-sectional view taken along line VV in FIG.
FIG. 6 is a side view showing a conventional fire-resistant coated steel beam.
7 is a cross-sectional view taken along the line VII-VII in FIG. 6;
[Explanation of symbols]
6 H-section steel (steel member)
6a web 8 fireproofing layer 10 air-conditioning duct 12 through holes 20 duct insertion sleeve 24 the sleeve body 26 spacer 28 joint plate portion 30 the support plate portions 32a, 32b pawl 34 engaging piece C 1, C 2 cut

Claims (1)

ダクトが貫通する貫通孔を形成した鉄骨部材の周囲に所定厚さの耐火被覆層を形成する際に、前記貫通孔の周囲の耐火被覆層の厚さを均一とするために前記鉄骨部材に装着するダクト挿通用スリーブであって、
前記ダクトが挿通するスリーブ本体と、このスリーブ本体の外周の周方向に所定間隔をあけて固定され、前記貫通孔の縁部との係合により前記スリーブ本体を前記貫通孔内に保持する複数のスペーサとを備え、
当該スペーサを、前記スリーブ本体の外周に固定した接合板部と、この接合板の縁部から折れ曲がって前記スリーブ本体側から外方に向けて突出する支持板部とを備えた矩形板材とし、前記支持板部の先端部に先端から基端側に向けて２本の切れ込みを入れることにより、これら２本の切れ込みの外側に一対の爪を形成し、この一対の爪の間に係合片を形成し且つ当該係合片を前記一対の爪に対して外側又は内側に僅かに折り曲げた形状とし、前記一対の爪により前記貫通孔近くの両側面を挟み込むとともに、前記一対の爪間に位置した前記貫通孔の内周面に対して、外側又は内側に折り曲がった前記係合片が弾性反力を作用する構造としたことを特徴とする耐火被覆鉄骨部材のダクト挿通用スリーブ。When a fireproof coating layer having a predetermined thickness is formed around the steel member formed with a through hole through which the duct passes, it is attached to the steel member so that the thickness of the fireproof coating layer around the through hole is uniform. A duct insertion sleeve,
A plurality of sleeve bodies that are inserted through the duct and fixed at predetermined intervals in the circumferential direction of the outer periphery of the sleeve body, and that hold the sleeve body in the through holes by engagement with edges of the through holes. With a spacer ,
The spacer is a rectangular plate member provided with a joining plate portion fixed to the outer periphery of the sleeve body, and a support plate portion that is bent from an edge portion of the joining plate and protrudes outward from the sleeve body side, A pair of claws are formed on the outer side of the two cuts by making two cuts in the distal end portion of the support plate portion from the distal end toward the proximal end side, and an engagement piece is formed between the pair of claws. Formed and slightly bent outward or inward with respect to the pair of claws, sandwiched between both side surfaces near the through hole by the pair of claws and positioned between the pair of claws A duct insertion sleeve for a fire-resistant coated steel member, wherein the engagement piece bent outward or inward acts on the inner peripheral surface of the through hole to act as an elastic reaction force .
JP05190796A 1996-03-08 1996-03-08 Sleeve for duct insertion of fire-resistant coated steel members Expired - Fee Related JP3717991B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP05190796A JP3717991B2 (en) 1996-03-08 1996-03-08 Sleeve for duct insertion of fire-resistant coated steel members

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP05190796A JP3717991B2 (en) 1996-03-08 1996-03-08 Sleeve for duct insertion of fire-resistant coated steel members

Publications (2)

Publication Number Publication Date
JPH09242214A JPH09242214A (en) 1997-09-16
JP3717991B2 true JP3717991B2 (en) 2005-11-16

Family

ID=12899957

Family Applications (1)

Application Number Title Priority Date Filing Date
JP05190796A Expired - Fee Related JP3717991B2 (en) 1996-03-08 1996-03-08 Sleeve for duct insertion of fire-resistant coated steel members

Country Status (1)

Country Link
JP (1) JP3717991B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7036558B2 (en) * 2017-09-27 2022-03-15 大和ハウス工業株式会社 Jig for spraying fireproof coating material and spraying method of fireproof coating material

Also Published As

Publication number Publication date
JPH09242214A (en) 1997-09-16

Similar Documents

Publication Publication Date Title
US7712787B2 (en) Connecting device and process for the manufacture of ducts for heating, conditioning, and ventilation
CA2525416A1 (en) Floor system
JP3717991B2 (en) Sleeve for duct insertion of fire-resistant coated steel members
JP4729068B2 (en) Beam penetration sleeve
GB1577067A (en) Method of joining surfaces using a ball of weldable material
JPH07111078B2 (en) Beam penetration sleeve for piping
JP7002819B2 (en) Covering material fixing bracket, covering material fixing structure, and covering material fixing construction method
JPH0721819U (en) Advance mounting sleeve before fireproof coating work
JP2000234795A (en) Beam penetration sleeve for piping
JP7523311B2 (en) Sleeve kit and method for constructing a long object penetration section using the same
JP3157358B2 (en) Piping installation device
JP3462971B2 (en) Outdoor unit of air conditioner and method of mounting and fixing compressor in outdoor unit
JP3887919B2 (en) Method for assembling brace material cross joint structure
JP7409854B2 (en) Air conditioning ducts and duct connection parts
JPH0731066Y2 (en) Beam penetration sleeve
GB2370987A (en) A seal for a fire barrier
JP2006200165A (en) Through sleeve for fire-proofing and covering steel frame, and method of mounting the sleeve in steel beam
JP3446123B2 (en) Waterproof material
JPS6020817Y2 (en) Hollow member joint structure
JP2019132466A (en) Connection structure for air conditioning duct device and flange member
JPH0932287A (en) Support method and tool for gap filling filler of pipe insertion hole
JP2001221219A (en) Nut with temporarily locking function
JPS6113181Y2 (en)
JPH01296083A (en) Furnace wall lining unit
JP3919545B2 (en) Duct with fitting

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20050131

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20050301

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20050414

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20050802

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20050901

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090909

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100909

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110909

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110909

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120909

Year of fee payment: 7

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120909

Year of fee payment: 7

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130909

Year of fee payment: 8

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees