JP2945604B2 - Roof structure using metal rafters - Google Patents
Roof structure using metal raftersInfo
- Publication number
- JP2945604B2 JP2945604B2 JP6453095A JP6453095A JP2945604B2 JP 2945604 B2 JP2945604 B2 JP 2945604B2 JP 6453095 A JP6453095 A JP 6453095A JP 6453095 A JP6453095 A JP 6453095A JP 2945604 B2 JP2945604 B2 JP 2945604B2
- Authority
- JP
- Japan
- Prior art keywords
- metal
- rafter
- metal rafter
- main body
- side wall
- 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
Links
- 229910052751 metal Inorganic materials 0.000 title claims description 97
- 239000002184 metal Substances 0.000 title claims description 97
- 239000000463 material Substances 0.000 claims description 53
- 238000009413 insulation Methods 0.000 claims description 10
- 239000000945 filler Substances 0.000 claims description 5
- 239000002023 wood Substances 0.000 claims description 3
- 238000009833 condensation Methods 0.000 description 11
- 230000005494 condensation Effects 0.000 description 11
- 239000003365 glass fiber Substances 0.000 description 5
- 239000011256 inorganic filler Substances 0.000 description 4
- 229910003475 inorganic filler Inorganic materials 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 4
- 239000006260 foam Substances 0.000 description 3
- 239000011490 mineral wool Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 230000009970 fire resistant effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 241001274961 Rubus repens Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Landscapes
- Building Environments (AREA)
- Roof Covering Using Slabs Or Stiff Sheets (AREA)
- Rod-Shaped Construction Members (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、金属垂木を使用する屋
根構造に関し、詳しくは、金属垂木の改良により、充分
な耐火仕様にしながら、気密性を及び遮音性を高め、結
露防止を良好におこなおうとする技術に係るものであ
る。BACKGROUND OF THE INVENTION The present invention relates to a shop using metal rafters.
More specifically, the present invention relates to a technique for improving the airtightness and the sound insulation and improving the prevention of dew condensation while maintaining sufficient fireproof specifications by improving metal rafters.
【０００２】[0002]
【従来の技術】従来、屋根の金属垂木Ａａは、図６に示
すように、頂面部１ａの両側端から側壁部２ａ，２ａが
垂下され、側壁部２ａの下端から外方に固定片３ａ，３
ａが略水平に延出されて金属垂木本体４ａが形成され、
そして、この金属垂木本体４ａがその固定片３ａにて母
屋９ａに釘のような固定具８ａにて固定され、隣接する
金属垂木Ａａ間に野地板６ａが配設され、野地板６ａ及
び金属垂木Ａａの上に金属屋根材７ａが葺設され、金属
垂木Ａａの頂面部１ａに金属屋根材７ａが釘のような固
定具８ｂにて固定されるのである。この場合、頂面部１
ａの下面側に、例えばロックウールボードのような耐火
・断熱材５ａが沿設されるのである。2. Description of the Related Art Conventionally, as shown in FIG. 6, a metal rafter Aa of a roof has side walls 2a, 2a hanging down from both side ends of a top surface 1a, and fixing pieces 3a, 2a, 2b extending outward from the lower end of the side wall 2a. 3
a is extended substantially horizontally to form a metal rafter main body 4a,
Then, the metal rafter main body 4a is fixed to the purlin 9a by a fixing tool 8a such as a nail with the fixing piece 3a, and a field board 6a is disposed between the adjacent metal rafters Aa, and the field board 6a and the metal rafter are provided. A metal roofing material 7a is laid on Aa, and the metal roofing material 7a is fixed to the top surface 1a of the metal rafter Aa with a fixture 8b such as a nail. In this case, the top 1
A fireproof and heat-insulating material 5a such as a rock wool board is provided along the lower surface side of a.
【０００３】[0003]
【発明が解決しようとする課題】ところが、このような
構成のものにおいては、頂面部１ａの下面にロックウー
ルボードのような耐火・断熱材５ａを介装しても、金属
垂木本体４ａは金属屋根材７ａに直接触れていて、両者
間にいわゆるヒートブリッジが生じ、両者間の熱伝導が
良好におこなわれ、金属垂木本体４ａが金属屋根材７ａ
と同様に屋外温度にまで低下し、天井裏からの暖かい空
気が触れて金属垂木本体４ａの内面側に結露が生じるの
である。また、釘のような固定具８ａの頭部の上から野
地板６ａが敷設され、頭部の高さに相当する隙間Ｓ1 が
生じ、更に、側壁部２ａと野地板６ａの側端面との間に
も隙間Ｓ2 が生じるのである。このような隙間Ｓ1 ，Ｓ
2 から天井裏の熱気が金属屋根材７ａの下面側に漏洩
し、金属屋根材７ａの裏面においても結露が生じるので
ある。こような結露が、天井裏に滴下したり、ロックウ
ールボードのような耐火・断熱材５ａに浸透し、耐火・
断熱機能を大きく低下させるのである。特に、天井裏か
らの火炎が上記隙間Ｓ1 ，Ｓ2 を通り、屋根材７ａを直
接加熱し、屋根の耐火性を大きく低下させるという問題
があった。However, in such a structure, even if a fire-resistant and heat-insulating material 5a such as a rock wool board is interposed on the lower surface of the top surface 1a, the metal rafter main body 4a is made of metal. The so-called heat bridge is generated between the two by directly touching the roofing material 7a, the heat conduction between the two is performed well, and the metal rafter main body 4a is connected to the metal roofing material 7a.
Similarly, the temperature drops to the outdoor temperature, and warm air from behind the ceiling comes into contact with the dew condensation on the inner surface side of the metal rafter main body 4a. Moreover, the laying sheathing plate 6a from the top of the head of the fastener 8a such as a nail, a gap S 1 is caused to correspond to the height of the head, further, the side end surface of the side wall portion 2a and the sheathing roof board 6a is the clearance S 2 is generated also between. Such gaps S 1 , S
From 2, the hot air behind the ceiling leaks to the lower surface side of the metal roofing material 7a, and dew condensation also occurs on the back surface of the metal roofing material 7a. Such dew drops on the ceiling or penetrates into the fire-resistant and heat-insulating material 5a such as a rock wool board.
It greatly reduces the insulation function. In particular, there is a problem that the flame from above the ceiling passes directly through the gaps S 1 and S 2 and directly heats the roofing material 7a, thereby greatly reducing the fire resistance of the roof.
【０００４】本発明はこのような問題に鑑みてなされた
ものであり、その目的とするところは、簡単な改良によ
り、充分な耐火仕様にしながら、気密性を高め、結露防
止を良好におこなうことができる金属垂木を使用する屋
根構造を提供しようとするにある。The present invention has been made in view of such a problem, and an object of the present invention is to improve airtightness and to prevent dew condensation satisfactorily with a simple fire improvement while ensuring a sufficient fireproof specification. Ya using metal rafters
In trying to provide a root structure .
【０００５】[0005]
【課題を解決するための手段】請求項１においては、頂
面部１の両側端から側壁部２，２が垂下され、側壁部２
の下端から外方に固定片３が延出されて金属垂木本体４
が形成され、金属垂木本体４の外面の全面に弾性を有す
る気密材１０が取着されて金属垂木Ａが構成され、固定
片３において釘打ちされて金属垂木Ａが母屋５に固定さ
れ、隣接する金属垂木Ａ，Ａ間に野地板６が配設され、
野地板６の側端面が側壁部２の気密材１０に弾接すると
ともに野地板の下面が固定片上の気密材に弾接し、野地
板６及び金属垂木Ａの上に金属屋根材７が葺設され、金
属垂木Ａの頂面部１に金属屋根材７が固定具８にて固定
されて成ることを特徴とするものである。According to the first aspect of the present invention, the side wall portions are suspended from both side ends of the top surface portion.
The fixing piece 3 extends outward from the lower end of the metal rafter main body 4
Is formed, and an airtight material 10 having elasticity is attached to the entire outer surface of the metal rafter main body 4 to form a metal rafter A.
The metal rafter A is nailed in the piece 3 and is fixed to the purlin 5.
And a base plate 6 is arranged between adjacent metal rafters A, A,
When the side end surface of the base plate 6 elastically contacts the airtight material 10 of the side wall portion 2
In both cases, the lower surface of the field plate touches the airtight material on the fixed piece,
A metal roofing material 7 is laid on the plate 6 and the metal rafter A,
Metal roofing material 7 is fixed to the top surface 1 of the genus rafter A with the fixture 8
It is characterized by being performed.
【０００６】請求項２においては、気密材１０は弾性及
び断熱性を有する無機質高充填材５であることを特徴と
するものである。 According to a second aspect of the present invention, the airtight material 10 is a highly inorganic filler 5 having elasticity and heat insulation .
【０００７】[0007]
【０００８】[0008]
【作用】請求項１においては、金属垂木本体４の外面に
弾性を有する気密材１０が取着され、金属垂木本体４の
金属面は屋内側に露出していて、屋内側からの火災に充
分に対処できながら、金属垂木Ａの頂面部１と金属屋根
材７間には弾性を備えた気密材１０が介装され、両者間
のヒートブリッジを回避でき、金属垂木本体４が温度低
下するのを回避でき、天井裏側に露出する金属垂木本体
４の内面に結露が生じるのを回避できる。しかも、固定
片３において固定具８が打たれて金属垂木Ａが母屋９に
固定されるのに、固定具８の頭部は弾性を有する気密材
１０に食い込んで頭部のみが高く突出するのを抑制する
ことができ、このため、野地板６を固定片３に隙間なく
載置することができ、且つ、側壁部２の弾性を有する気
密材１０に野地板６の側端面を圧接することができ、こ
の箇所においても隙間が生じるのを回避することができ
る。したがって、金属垂木Ａの全長において野地板６と
の間に隙間が生じるのを回避することができ、隙間が生
じることで天井裏の暖気が金属屋根材７の下面へと漏洩
するのを回避でき、結露の発生を回避することができ、
このように、屋根の葺設において、充分な耐火仕様にし
ながら、気密性を高め、結露防止を良好におこなうので
ある。[Action] Oite to claim 1, airtight material 10 having elasticity in the outer surface of the metal rafter body 4 is attached, the metal surface of the metal rafter body 4 is exposed to the indoor side, the fire from the indoor side In addition, the airtight material 10 having elasticity is interposed between the top surface 1 of the metal rafter A and the metal roofing material 7 so that a heat bridge between them can be avoided, and the temperature of the metal rafter main body 4 decreases. Can be avoided, and dew condensation can be prevented from occurring on the inner surface of the metal rafter main body 4 exposed behind the ceiling. Moreover, although the metal rafter A is fixed to the purlin 9 by the fixing tool 8 being hit on the fixing piece 3, the head of the fixing tool 8 bites into the elastic airtight material 10 and only the head protrudes high. Therefore, the field plate 6 can be placed on the fixing piece 3 without any gap, and the side end surface of the field plate 6 is pressed against the elastic airtight material 10 of the side wall 2. Therefore, it is possible to avoid the occurrence of a gap at this position. Therefore, it is possible to prevent a gap from being formed between the metal rafter A and the ground board 6 in the entire length of the metal rafter A, and it is possible to prevent the warm air behind the ceiling from leaking to the lower surface of the metal roofing material 7 due to the gap. , To avoid the occurrence of condensation,
In this way, in roofing, the airtightness is improved and dew condensation is prevented satisfactorily while maintaining sufficient fireproof specifications.
【０００９】請求項２においては、気密材１０は弾性及
び断熱性を有する無機質高充填材５であって、耐火性を
一層高めるものである。[0009] Oite to claim 2, hermetic material 10 is a mineral high filler 5 having elasticity and insulation properties, is intended to enhance the fire resistance more.
【００１０】[0010]
【実施例】以下本発明の実施例を図面に基づいて詳述す
る。図１（ａ）は金属垂木の断面図を示し、同図（ｂ）
は屋根の部分断面図を示している。金属垂木本体４は金
属板が断面ハット型にロール成形され、その表面に弾性
を有する気密材１０を全面に取着したものである。即
ち、金属垂木本体４は、その頂面部１の両側端から側壁
部２，２が垂下され、側壁部２の下端から外方に固定片
３が略水平に延出されて、断面ハット型に形成されたも
のである。金属垂木本体４の頂面部１、側壁部２及び固
定片３の外面に弾性を有する気密材１０が一連に取着さ
れて金属垂木Ａが構成されている。この気密材１０は、
通常の屋根で、高い耐火性が求められない仕様では、ポ
リエチレンフォームで、４〜１０ｍｍの厚みのものが取
着される。また、気密材１０として、充分な耐火性が求
められる仕様では、弾性及び断熱性を有する無機質高充
填材５が取着される。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1A shows a cross-sectional view of a metal rafter, and FIG.
Shows a partial sectional view of the roof. The metal rafter main body 4 is formed by rolling a metal plate into a hat-shaped cross section, and has an elastic airtight material 10 attached to the entire surface thereof. That is, the metal rafter main body 4 has the side walls 2, 2 hanging down from both side ends of the top surface 1, and the fixing piece 3 extending substantially horizontally outward from the lower end of the side wall 2, forming a hat-shaped cross section. It was formed. A metal rafter A is constituted by a series of elastic airtight materials 10 attached to the top surface portion 1, the side wall portion 2 and the outer surface of the fixing piece 3 of the metal rafter main body 4. This airtight material 10
In a specification that does not require high fire resistance in a normal roof, a polyethylene foam having a thickness of 4 to 10 mm is attached. In the specification where sufficient fire resistance is required as the airtight material 10, an inorganic high filler 5 having elasticity and heat insulation is attached.
【００１１】図２及び図３に示すように、軒棟方向に間
隔を隔てて施工された母屋９…の上にこれら母屋９…に
略直交するように、金属垂木Ａが配設され、固定片３に
おいて固定具８が打たれて、金属垂木Ａが母屋９に固定
される。隣接する金属垂木Ａ，Ａ間に野地板６が配設さ
れる。野地板６は、木毛セメントや木片セメントが採用
されるが、他のものでもよく、断熱・耐火機能があれば
よい。野地板６及び金属垂木Ａの上に金属屋根材７が葺
設され、金属垂木Ａの頂面部１に金属屋根材７が固定具
８にて固定されるのである。このような金属屋根材７の
施工形態は種々設計変更可能である。As shown in FIG. 2 and FIG. 3, a metal rafter A is disposed on a main house 9 which is constructed at intervals in the direction of the eaves ridge so as to be substantially orthogonal to the main house 9 and fixed. The fixing tool 8 is hit on the piece 3, and the metal rafter A is fixed to the purlin 9. A field board 6 is disposed between adjacent metal rafters A. The field base plate 6 is made of wood wool cement or wood chip cement, but may be made of another material, as long as it has a heat insulation and fire resistance function. The metal roofing material 7 is laid on the base plate 6 and the metal rafter A, and the metal roofing material 7 is fixed to the top surface 1 of the metal rafter A with the fixture 8. The construction form of such a metal roofing material 7 can be variously changed in design.
【００１２】このような金属垂木Ａ及び野地板６の施工
に際しては、金属垂木Ａの頂面部１と金属屋根材７間に
は気密材１０が介装され、両者間におけるヒートブリッ
ジを回避するのである。即ち、金属垂木本体４が温度低
下するのを回避して、金属垂木本体４の内面側に結露が
生じるのを回避するのである。ところで、固定片３にお
いて固定具８が打たれて金属垂木Ａが母屋９に固定され
るのに、固定具８の頭部は弾性を有する気密材１０に食
い込んで頭部のみが高く突出するのを抑制するのであ
り、このため、野地板６を固定片３に隙間なく載置する
ことができ、且つ、側壁部２に弾性を有する気密材１０
に野地板６の側端面を圧接することができ、この箇所に
おいても隙間が生じるのを回避するのである。このよう
に、金属垂木Ａの全長において野地板６との間に隙間が
生じるのを回避し、隙間が生じることによる結露の発生
を回避し、また、天井裏の火炎が隙間をへて直接に金属
屋根材７を加熱するのを回避するのである。When such a metal rafter A and a ground board 6 are constructed, an airtight material 10 is interposed between the top surface portion 1 of the metal rafter A and the metal roofing material 7 to avoid a heat bridge therebetween. is there. That is, the temperature of the metal rafter main body 4 is prevented from lowering, and the formation of dew on the inner surface side of the metal rafter main body 4 is avoided. By the way, although the fixing tool 8 is hit on the fixing piece 3 and the metal rafter A is fixed to the purlin 9, the head of the fixing tool 8 bites into the elastic airtight material 10 and only the head protrudes high. Therefore, the base plate 6 can be placed on the fixing piece 3 without any gap, and the airtight material 10 having elasticity on the side wall portion 2 can be provided.
Thus, the side end surface of the base plate 6 can be pressed into contact with the base plate 6, and a gap is also prevented from being formed at this position. In this way, it is possible to avoid the occurrence of a gap between the metal rafter A and the ground plate 6 over the entire length of the metal rafter A, to avoid the occurrence of dew condensation due to the gap, and to allow the flame behind the ceiling to pass directly through the gap. This avoids heating the metal roofing material 7.
【００１３】ところで、耐火仕様を高める弾性及び断熱
性を有する無機質高充填材５としては、例えば、無機質
高充填フォームプラスチックがある。その組成は、エチ
レン酢ビ共重合体等有機質（内エチレン酢ビ共重合体８
０％〜９５％）が４３重量％以下、無機質系充填剤が４
６重量％以上、及び難燃剤他１１重量％以上のもので、
不燃性８（ＯＩ）２８以上（ＪＩＳ Ｋ ７２０１）の
ものである。また、無機質高充填材５の他例としては、
認定番号が準不燃第２０２５号のもので、商品名「トー
レペフＵＲ」（東レ（株）製）、商品名「ハイエチレン
スーパー」（日立化成工業（株）製）、商品名「フネン
エース」（古河電気工業（株）製）等のものがある。更
に、無機質高充填材５の他例としては、認定番号が不燃
第１１３１号のもので、商品名「スーパーフェルト」
（ニチアス（株）製）、商品名「ジーフネン」（積水化
学工業（株）製）、商品名「ＧＲマット」（日立化成工
業（株）製）、商品名「ニューフネン」（東レ（株）
製）があり、図４に示すようなガラス繊維シート１１が
ある。その構成は、基材１２に接着剤にて合成樹脂エマ
ルジョン処理ポリエステル不織布１３，１３間に無機質
断熱材（ガラス繊維）１４が介装されたものを積層接着
したものである。ガラス繊維シート１１の組成は、ガラ
ス繊維が９０重量％以上、ポリエステル樹脂が１０重量
％以上である。そして、合成樹脂エマルジョン処理ポリ
エステル不織布１３は、５０ｇ／ｍ2 （片面２５ｇ／ｍ
2 以下）程度である。また、無機質高充填材５は、石綿
炭酸カルシウム発泡板であってもよいものである。Incidentally, as the highly inorganic filler 5 having elasticity and heat insulating property for improving the fire resistance specification, for example, there is an inorganic highly filled foam plastic. Its composition is based on organic substances such as ethylene-vinyl acetate copolymer (in which ethylene-vinyl acetate copolymer 8
0% to 95%) is 43% by weight or less, and the inorganic filler is 4% by weight.
6% by weight or more, and 11% by weight or more of flame retardant, etc.
It is nonflammable 8 (OI) 28 or more (JIS K 7201). Other examples of the inorganic high filler 5 include:
The certification number is quasi-non-flammable No. 2025, trade name "Torepef UR" (manufactured by Toray Industries, Inc.), trade name "High Ethylene Super" (manufactured by Hitachi Chemical Co., Ltd.), trade name "Funen Ace" (Furukawa) Electric Industry Co., Ltd.). Further, as another example of the inorganic high-filling material 5, the certification number is No. 1131, and the product name is "Super Felt".
(Nichias Co., Ltd.), trade name "Gifnen" (Sekisui Chemical Co., Ltd.), trade name "GR Matt" (Hitachi Chemical Co., Ltd.), trade name "New Funen" (Toray Co., Ltd.)
And a glass fiber sheet 11 as shown in FIG. The structure is such that an inorganic heat insulating material (glass fiber) 14 is interposed between a synthetic resin emulsion-treated polyester nonwoven fabric 13 and an adhesive and laminated on a substrate 12. The composition of the glass fiber sheet 11 is 90% by weight or more of glass fiber and 10% by weight or more of polyester resin. The synthetic resin emulsion-treated polyester nonwoven fabric 13 is 50 g / m 2 (25 g / m 2 on one side).
2 or less). Further, the inorganic high filler 5 may be an asbestos calcium carbonate foam board.
【００１４】図５は他の実施例を示していて、金属垂木
Ａの金属垂木本体４において、その頂面部１に対してそ
の両側端から側壁部２，２が約５°の広がり角度θをも
って垂下されたものである。その他の構成は、上述した
実施例の金属垂木Ａの構成のものと同一である。このよ
うに、頂面部１に対して側壁部２，２が広がり角度θを
もって垂下されることで、金属垂木本体４のロール成形
が容易で、かつ野地板６の敷込みが容易で、しかも、野
地板６は側壁部２の下部の弾性を有する無機質繊維板５
に対して強く圧接され、その気密性を充分に高めるもの
である。FIG. 5 shows another embodiment. In a metal rafter main body 4 of a metal rafter A, side walls 2, 2 from both side ends thereof with respect to a top surface 1 thereof have a spread angle θ of about 5 °. It was drooped. Other configurations are the same as those of the configuration of the metal rafter A of the above-described embodiment. In this manner, the side walls 2, 2 are suspended at the spread angle θ with respect to the top surface 1, so that the metal rafter main body 4 can be easily roll-formed, and the base plate 6 can be easily laid. The base plate 6 is an inorganic fiber plate 5 having elasticity below the side wall 2.
, And the airtightness is sufficiently enhanced.
【００１５】[0015]
【発明の効果】請求項１においては、頂面部の両側端か
ら側壁部が垂下され、側壁部の下端から外方に固定片が
延出されて金属垂木本体が形成され、金属垂木本体の外
面の全面に弾性を有する気密材が取着されて金属垂木が
構成され、固定片において釘打ちされて金属垂木が母屋
に固定され、隣接する金属垂木間に野地板が配設され、
野地板の側端面が側壁部の気密材に弾接するとともに野
地板の下面が固定片上の気密材に弾接し、野地板及び金
属垂木の上に金属屋根材が葺設され、金属垂木の頂面部
に金属屋根材が固定具にて固定されているから、金属垂
木の頂面部と金属屋根材間には気密材が介装され、両者
間におけるヒートブリッジを回避でき、金属垂木本体が
温度低下するのを回避でき、金属垂木本体の内面側に結
露が生じるのを回避でき、しかも、固定片において固定
具が打たれて金属垂木が母屋に固定されるのに、固定具
の頭部は弾性を有する気密材に食い込んで頭部のみが高
く突出するのを抑制することができ、このため、野地板
を固定片に隙間なく載置することができ、且つ、側壁部
に弾性を有する気密材に野地板の側端面を圧接すること
ができ、この箇所においても隙間が生じるのを回避する
ことができ、したがって、金属垂木の全長において野地
板との間に隙間が生じるのを回避することができ、隙間
が生じることによる結露の発生を回避でき、また、天井
裏の火炎が隙間をへて直接に金属屋根材を加熱するのを
回避でき、このように、屋根の葺設において、充分な耐
火仕様にしながら、気密性を高め、遮音性を高め、結露
防止を良好におこなうことができるという利点がある。According to the first aspect of the present invention, the side wall portion is suspended from both side ends of the top surface portion, and the fixing piece is extended outward from the lower end of the side wall portion to form a metal rafter main body. is attached airtight material having elasticity to the entire surface is a metal rafter
It is composed and nailed in the fixing piece and the metal rafter is purlin
, And a ground board is arranged between adjacent metal rafters,
The side end surface of the base plate elastically contacts the airtight material on the side wall and
The lower surface of the base plate elastically contacts the airtight material on the fixed piece,
Metal roofing material is laid on the genus rafters and the top of the metal rafters
Since the metal roofing material is fixed with the fixture , an airtight material is interposed between the top surface of the metal rafter and the metal roofing material, it is possible to avoid a heat bridge between the two, and the temperature of the metal rafter body decreases. Can be avoided, and dew condensation can be prevented from occurring on the inner surface side of the metal rafter main body.Moreover, although the metal rafter is fixed to the purlin by the fixing piece being hit on the fixing piece, the head of the fixing metal has elasticity. It is possible to suppress that only the head protrudes high by digging into the airtight material having, so that the field board can be placed on the fixing piece without any gap, and the airtight material having elasticity on the side wall portion. It is possible to press the side end surface of the field board, and it is possible to avoid the occurrence of a gap also at this point, and therefore, it is possible to avoid the occurrence of a gap between the metal rafter and the field board in the entire length of the metal rafter. Due to the gap It is possible to avoid the occurrence of dew condensation, and to prevent the flames behind the ceiling from directly heating the metal roofing material through the gaps. This has the advantage that it is possible to enhance the sound insulation, to enhance the sound insulation, and to favorably prevent dew condensation.
【００１６】請求項２においては、気密材は弾性及び断
熱性を有する無機質高充填材であるから、一層、耐火性
を高めることができるという利点がある。 According to the second aspect, since the hermetic material is a highly inorganic filler having elasticity and heat insulation, there is an advantage that the fire resistance can be further enhanced .
【００１７】[0017]
【図１】本発明の一実施例を示し、（ａ）は金属垂木の
断面図、（ｂ）は屋根の部分断面図である。FIG. 1 shows an embodiment of the present invention, wherein (a) is a cross-sectional view of a metal rafter, and (b) is a partial cross-sectional view of a roof.
【図２】（ａ）は母屋に金属垂木を施工した斜視図、
（ｂ）は野地板を施工した断面図である。FIG. 2A is a perspective view in which a metal rafter is constructed on a main building,
(B) is a sectional view in which a field board is constructed.
【図３】同上の屋根の一部破断した斜視図である。FIG. 3 is a partially broken perspective view of the same roof.
【図４】同上のガラス繊維シートの断面図である。FIG. 4 is a cross-sectional view of the same glass fiber sheet.
【図５】他の実施例の金属垂木の断面図である。FIG. 5 is a cross-sectional view of a metal rafter according to another embodiment.
【図６】従来例の屋根の部分断面図である。FIG. 6 is a partial sectional view of a conventional roof.
１ 頂面部 ２ 側壁部 ３ 固定片 ４ 金属垂木本体 ５ 無機質高充填材 ６ 野地板 ７ 金属屋根材 ８ 固定具 ９ 母屋 １０ 気密材 Ａ 金属垂木 DESCRIPTION OF SYMBOLS 1 Top surface part 2 Side wall part 3 Fixing piece 4 Metal rafter main body 5 Inorganic high filling material 6 Field board 7 Metal roofing material 8 Fixture 9 Purlin 10 Airtight material A Metal rafter
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭55−59268（ＪＰ，Ａ) 特開 平６−26154（ＪＰ，Ａ) 実開 昭59−54626（ＪＰ，Ｕ) 実開 昭59−54624（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) E04C 3/04 E04D 3/00 - 3/40 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-55-59268 (JP, A) JP-A-6-26154 (JP, A) Fully open 1984-54626 (JP, U) Really open 1984 54624 (JP, U) (58) Fields investigated (Int. Cl. 6 , DB name) E04C 3/04 E04D 3/00-3/40
Claims (2)
側壁部の下端から外方に固定片が延出されて金属垂木本
体が形成され、金属垂木本体の外面の全面に弾性を有す
る気密材が取着されて金属垂木が構成され、固定片にお
いて釘打ちされて金属垂木が母屋に固定され、隣接する
金属垂木間に野地板が配設され、野地板の側端面が側壁
部の気密材に弾接するとともに野地板の下面が固定片上
の気密材に弾接し、野地板及び金属垂木の上に金属屋根
材が葺設され、金属垂木の頂面部に金属屋根材が固定具
にて固定されて成ることを特徴とする金属垂木を使用す
る屋根構造。1. A side wall portion is suspended from both side ends of a top surface portion,
A fixing piece extends outward from the lower end of the side wall to form a metal rafter main body, and an elastic airtight material is attached to the entire outer surface of the metal rafter main body to form a metal rafter.
Is nailed and the metal rafters are fixed to the purlin and adjacent
A base plate is placed between metal rafters, and the side end surface of the base plate is a side wall.
And the lower surface of the base plate is on the fixed piece
Metallic roofing on wooden boards and metal rafters
The roofing material is laid, and the metal roofing material is fixed on the top of the metal rafter.
Using a metal rafter characterized by being fixed at
Roof structure .
高充填材であることを特徴とする請求項１記載の金属垂
木を使用する屋根構造。2. The metal hanging material according to claim 1, wherein the airtight material is an inorganic high filler having elasticity and heat insulation.
Roof structure using wood .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6453095A JP2945604B2 (en) | 1995-03-23 | 1995-03-23 | Roof structure using metal rafters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6453095A JP2945604B2 (en) | 1995-03-23 | 1995-03-23 | Roof structure using metal rafters |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08260617A JPH08260617A (en) | 1996-10-08 |
| JP2945604B2 true JP2945604B2 (en) | 1999-09-06 |
Family
ID=13260876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6453095A Expired - Fee Related JP2945604B2 (en) | 1995-03-23 | 1995-03-23 | Roof structure using metal rafters |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2945604B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101289236B1 (en) * | 2011-07-07 | 2013-07-26 | 유한회사 에스와이 | Wooden House And Manufacturing Method Thereof |
-
1995
- 1995-03-23 JP JP6453095A patent/JP2945604B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08260617A (en) | 1996-10-08 |
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