JP5014454B2

JP5014454B2 - Hanger type joint structure

Info

Publication number: JP5014454B2
Application number: JP2010088828A
Authority: JP
Inventors: 明彦谷村
Original assignee: 株式会社淀川製鋼所
Priority date: 2010-04-07
Filing date: 2010-04-07
Publication date: 2012-08-29
Anticipated expiration: 2030-04-07
Also published as: JP2011219961A

Description

本発明は、折板屋根材が吊子支持体と、同吊子支持体に固定した吊子を支持部材にしてはぜ接合してある吊子式のはぜ接合構造に関する。 The present invention relates to a hanger-type hull-joint structure in which a folded plate roof material is helix-joined with a hanger support body and a hanger fixed to the hanger support body as a support member.

この種のはぜ接合構造においては、屋根の軒棟方向へ一定間隔おきに配置したタイトフレーム（吊子支持体）と、各タイトフレームに固定した吊子とで折板屋根材を支持している。したがって、タイトフレームおよび下地フレームの配置間隔を小さくし、あるいは厚み寸法が大きな折板屋根材を使用することによって屋根強度を向上できる。この種の対策はすぐにでも適用できる反面、タイトフレーム、下地フレーム、および吊子の使用数が多くなり、さらに折板屋根材の厚み寸法が大きい分だけ、資材コストと施工コストが増加するのを避けられない。 In this type of welded joint structure, the folded roof material is supported by a tight frame (suspender support) arranged at regular intervals in the direction of the eaves of the roof and a suspension fixed to each tight frame. Yes. Therefore, the roof strength can be improved by reducing the arrangement interval between the tight frame and the base frame, or by using the folded plate roof material having a large thickness dimension. While this type of countermeasure can be applied immediately, the number of tight frames, base frames, and suspensions is increased, and the thickness of the folded-plate roofing material is increased, resulting in increased material and construction costs. Inevitable.

上記のような資材コストと施工コストの増加を避けながら屋根強度を向上することは、従来から多く試みられている。例えば特許文献１においては、はぜ接合部を左右に挟む一対の締結金具と、両金具を外面側から保持する逆字状の規制具とを付加して、折板屋根のはぜ接合構造が風圧を受けて破壊されるのを防止している。締結金具および規制具は、各吊子に対応して配置してある。 Many attempts have been made to improve the roof strength while avoiding the increase in material costs and construction costs as described above. For example, in Patent Document 1, a pair of fastening metal fittings sandwiching a helical joint portion on the right and left sides and a reverse-shaped regulator that holds both metal fittings from the outer surface side are added to provide a helical joint structure for folded plate roofs. It is prevented from being damaged by wind pressure. The fastening bracket and the restricting tool are arranged corresponding to each suspension.

特許文献２の吊子においては、断面鉤形のはぜ部と、タイトフレームに固定される脚部とで吊子を構成し、はぜ部の長手方向の複数箇所に構造強度を増強する補強リブを設けて、折板屋根材と吊子とのはぜ接合構造が風圧を受けて破壊されるのを防止している。 In the hanger of Patent Document 2, a hanger having a hook-shaped cross section and a leg portion fixed to the tight frame constitute a hanger, and reinforcement that enhances structural strength at a plurality of positions in the longitudinal direction of the helix. Ribs are provided to prevent the welded joint structure of the folded roof material and the suspension from being damaged by wind pressure.

本発明のはぜ接合構造においては、吊子に受爪を設けて、風圧を受けた折板屋根材が吊子から外れようとするのを受爪で防止するが、このように吊子に受爪を設けることは、例えば特許文献３に開示されている。ただし、特許文献３の受爪は、隣接する折板屋根材と吊子の仮り組み状態を維持するために設けられており、受爪を設ける意義が本発明とは異なる。 In the joint structure of the present invention, a catching claw is provided on the hanger to prevent the folded-plate roof material that has been subjected to wind pressure from coming off the hanger. Providing the receiving pawl is disclosed in Patent Document 3, for example. However, the catching pawls of Patent Document 3 are provided in order to maintain the temporary folded state of the adjacent folded plate roofing material and the suspension, and the significance of providing the catching pawls is different from the present invention.

特開２００６−２９９５６５号公報（段落番号００３１、図４）Japanese Patent Laying-Open No. 2006-299565 (paragraph number 0031, FIG. 4) 特開２０００−３２８７２７号公報（段落番号００１３、図１）JP 2000-328727 A (paragraph number 0013, FIG. 1) 実公平０４−０４６４１４号公報（第２頁左欄第１６〜２８行、第３図）No. 04-046414 (page 2, left column, lines 16-28, FIG. 3)

上記のように、折板屋根材と吊子とのはぜ接合構造の破壊防止策として、従来は、折板屋根材と吊子のはぜ接合部を補強金具で補強し、あるいは、吊子自身の構造強度を向上するなど、はぜ接合構造の高剛性化を行なうことが専らであった。しかし本発明者は、はぜ接合構造の破壊現象を実験によって再現し、その過程を仔細に観察した結果、はぜ接合構造の破壊は、はぜ接合部を高剛性化するだけでは足りないことに気づいた。 As described above, as a measure for preventing the breakage of the joint structure between the folded-plate roof material and the hanging member, conventionally, the joined portion of the folded-plate roof material and the hanging member is reinforced with the reinforcing metal fittings, or the hanging member is used. The main focus was to increase the rigidity of the welded joint structure by improving its structural strength. However, the present inventor has reproduced the fracture phenomenon of the welded joint structure through experiments, and as a result of closely observing the process, it has been found that it is not sufficient to make the welded joint part highly rigid. I noticed.

一般的に、使用状態における吊子の上下方向の曲げ強度は、折板屋根材のはぜ接合の強度より充分に大きい。そのため、風圧を受けた折板屋根材が、隣接する吊子の間で外膨らみ状に弾性変形する場合でも、吊子上端のはぜ受部が折板屋根材に追随して弾性変形することはない。先に行なった実験においては、図１２に示すように、風圧を受けた外側の折板屋根材４０の接合壁４１が、吊子４２のはぜ受部４３の外面に沿って滑りながら拡開状に変形し、ついには、図１２（ｂ）に示すように接合壁４１が吊子４２のはぜ受部４３から抜け外れて、はぜ接合構造が破壊されるのが観察された。本発明者は、上記の知見に基づきはぜ接合構造の破壊を防ぐための対策を検討した結果、本発明を提案するに至った。 Generally, the bending strength in the vertical direction of the hanging member in use is sufficiently larger than the strength of the seam joint of the folded plate roofing material. Therefore, even when the folded plate roof material subjected to wind pressure elastically deforms in an outwardly bulging shape between adjacent hanging members, the upper end of the hanging member elastically deforms following the folded plate roof material. There is no. In the experiment performed previously, as shown in FIG. 12, the joint wall 41 of the outer folded plate roof material 40 that has been subjected to wind pressure expands while sliding along the outer surface of the hanger receiving portion 43 of the hanger 42. Finally, as shown in FIG. 12B, it was observed that the joining wall 41 was detached from the hull receiving portion 43 of the hanger 42, and the hull joining structure was destroyed. Based on the above findings, the present inventor has studied the measures for preventing the destruction of the welded joint structure, and as a result has proposed the present invention.

本発明の目的は、風圧を受けた外側の折板屋根材が吊子のはぜ受部から抜け外れるのを規制し、さらに弾性変形する折板屋根材に追随して吊子を弾性変形させて、はぜ接合構造が破壊されるのを解消できる信頼性に優れた吊子式のはぜ接合構造を提供することにある。 The object of the present invention is to restrict the outside folded plate roof material that has been subjected to wind pressure from coming off from the hanger receiving portion, and to elastically deform the hanging member following the folded plate roof material that is elastically deformed. Thus, it is an object of the present invention to provide a highly reliable hanger-type screw joint structure that can eliminate the destruction of the screw joint structure.

本発明は、隣接する折板屋根材３が、吊子支持体２に固定した吊子４を介して連結固定してある吊子式のはぜ接合構造を対象とする。吊子４は、吊子支持体２に固定される連結部１１と、連結部１１の上端に設けられて軒棟方向へ伸びるはぜ受部１２とを備えている。はぜ受部１２の連結部１１側の基端には、外側の折板屋根材３を協同して受け止める受止段部１４と抜止め爪１５とを設ける。連結部１１の左右両側に、吊子４の弾性変形を促進する入り隅状の切欠２０を形成する。切欠２０の入り隅部分は湾曲線状に丸めてある。 The present invention is directed to a hanger-type screw joint structure in which adjacent folded-plate roofing materials 3 are connected and fixed via a hanger 4 fixed to a hanger support 2. The hanger 4 includes a connecting portion 11 fixed to the hanger support 2 and a hull receiving portion 12 provided at the upper end of the connecting portion 11 and extending in the eaves-ridge direction. A receiving step portion 14 and a retaining claw 15 for receiving the outer folded plate roof material 3 in cooperation with each other are provided at the base end of the helical receiving portion 12 on the connecting portion 11 side. A corner-shaped notch 20 that promotes elastic deformation of the suspension 4 is formed on both the left and right sides of the connecting portion 11. The corner portion of the cutout 20 is rounded into a curved line.

はぜ受部１２の左右半部の長さを１００％とするとき、切欠２０の入り隅部を、半径値が２０〜２５０％の円弧を含んで湾曲線状に形成する。 When the length of the left and right half portions of the screw receiving portion 12 is 100%, the corners of the notch 20 are formed in a curved line shape including an arc having a radius value of 20 to 250%.

はぜ受部１２の左右幅Ｌを、連結部１１の左右幅Ｂより大きく設定する。抜止め爪１５は、連結部１１の両側に突出するはぜ受部１２の左右両端に、下向きに切り起して形成する。 The left and right width L of the screw receiving portion 12 is set larger than the left and right width B of the connecting portion 11. The retaining claws 15 are formed by being cut downward and raised at the left and right ends of the screw receiving portion 12 projecting on both sides of the connecting portion 11.

切欠２０の入り隅部は、連結部１１の下縁に近づくほど曲率半径が小さく、連結部１１の左右縁に近づくほど曲率半径が大きな湾曲線で形成する。 The entering corner of the notch 20 is formed by a curved line having a smaller radius of curvature as it approaches the lower edge of the connecting portion 11 and has a larger radius of curvature as it approaches the left and right edges of the connecting portion 11.

抜止め爪１５の下端は、受止段部１４より僅かに下側へ突出する。 The lower end of the retaining claw 15 protrudes slightly below the receiving step 14.

抜止め爪１５・１６は、はぜ受部１２の左右両端と、はぜ受部１２の中央部の複数個所とに形成する。 The retaining claws 15, 16 are formed at the left and right ends of the shell receiving portion 12 and at a plurality of locations in the central portion of the shell receiving portion 12.

吊子４は、連結部１１に通設した締結穴１３を介してボルト６で吊子支持体２に締結固定する。切欠２０の入り隅部分における破断強度を、締結穴１３の破断強度より大きく設定する。 The hanger 4 is fastened and fixed to the hanger support 2 with a bolt 6 through a fastening hole 13 provided in the connecting portion 11. The breaking strength at the corner of the notch 20 is set larger than the breaking strength of the fastening hole 13.

本発明においては、連結部１１とはぜ受部１２とで吊子４を構成し、はぜ受部１２の連結部１１側の基端に受止段部１４と抜止め爪１５とを設けて、これら両者１４・１５が協同して外側の折板屋根材３の接当壁１７を受け止めるようにした。このように、受止段部１４と抜止め爪１５とで接当壁１７を受け止めると、折板屋根材３の接合壁８が拡開方向へ滑り移動しようとするのを抜止め爪１５で防いで、接合壁８がはぜ受部１２から抜け外れるのを規制できる。また、連結部１１の左右両側に、湾曲線状に丸められた入り隅状の切欠２０を形成するので、折板屋根材３が外膨らみ状に弾性変形するとき、吊子４を折板屋根材３に追随して弾性変形させることができる。したがって本発明によれば、はぜ接合構造が風圧を受けて破壊されるのを解消して、従来の剛構造のはぜ接合構造に比べて信頼性に優れた吊子式のはぜ接合構造を提供できる。 In the present invention, the connecting portion 11 and the screw receiving portion 12 constitute the suspension 4, and a receiving step portion 14 and a retaining claw 15 are provided at the proximal end of the screw receiving portion 12 on the connecting portion 11 side. These 14 and 15 cooperate to receive the contact wall 17 of the outer folded plate roofing material 3. As described above, when the contact wall 17 is received by the receiving step portion 14 and the retaining claw 15, the retaining claw 15 prevents the joining wall 8 of the folded roof material 3 from sliding and moving in the expanding direction. Thus, it is possible to prevent the joining wall 8 from being detached from the shell receiving portion 12. Moreover, since the corner-shaped notch 20 rounded in the curved line shape is formed in the both right and left sides of the connection part 11, when the folded-plate roof material 3 elastically deforms in the shape of an outward bulge, the hanging element 4 is made into a folded-plate roof. It can be elastically deformed following the material 3. Therefore, according to the present invention, the hull-type hull-joint structure, which is superior in reliability to the hose-joint structure of the conventional rigid structure, is solved by preventing the hull-joint structure from being damaged by wind pressure. Can provide.

はぜ受部１２の左右半部の長さを１００％とするとき、切欠２０の入り隅部を半径値が２０〜２５０％の円弧を含んで湾曲線状に形成すると、吊子４を折板屋根材３の弾性変形に追随して弾性変形させることができる。また、切欠２０の入り隅部を始端にして連結部１１が破断するのを解消して、吊子４の破断強度を満足できる。因みに、入り隅部の半径値が２０％未満であると、吊子４に最大許容荷重が作用する以前に切欠２０の入り隅部分に破断が生じ、強度が不足する。また、入り隅部の半径値が２５０％を越えると、吊子４が殆どたわまなくなり、折板屋根材３の弾性変形に追随できない。 When the length of the left and right half portions of the screw receiving portion 12 is 100%, when the corners of the notch 20 are formed in a curved line shape including an arc having a radius value of 20 to 250%, the suspension 4 is folded. The plate roof material 3 can be elastically deformed following the elastic deformation of the plate roof material 3. Further, the breaking of the connecting portion 11 starting from the corner where the notch 20 enters is eliminated, and the breaking strength of the hanger 4 can be satisfied. Incidentally, if the radius value of the corner is less than 20%, the corner portion of the notch 20 is broken before the maximum allowable load is applied to the suspension 4, and the strength is insufficient. Moreover, if the radius value of the entering corner exceeds 250%, the hanger 4 hardly bends and cannot follow the elastic deformation of the folded plate roofing material 3.

はぜ受部１２を連結部１１より広幅にして、連結部１１の両側に突出するはぜ受部１２の左右両端に、抜止め爪１５を下向きに切り起して形成すると、他に先行してはぜ受部１２の左右両端を弾性変形させることができる。また、左右両端の抜止め爪１５に折板屋根材３の変形力を伝えるので、吊子４に大きな弾性モーメントを作用させて、はぜ受部１２および連結部１１を折板屋根材３の弾性変形に追随して円滑に弾性変形させることができる。 If the flange receiving portion 12 is made wider than the connecting portion 11 and formed at the left and right ends of the flange receiving portion 12 projecting on both sides of the connecting portion 11 by cutting the retaining claws 15 downwards, It is possible to elastically deform both the left and right ends of the lever receiver 12. In addition, since the deformation force of the folded plate roofing material 3 is transmitted to the retaining claws 15 at the left and right ends, a large elastic moment is applied to the suspension 4 to connect the hull receiving portion 12 and the connecting portion 11 to the folded plate roofing material 3. The elastic deformation can be smoothly performed following the elastic deformation.

切欠２０の入り隅部を、連結部１１の下縁に近づくほど曲率半径が小さく、連結部１１の左右縁に近づくほど曲率半径が大きな湾曲線で形成すると、吊子４の断面２次モーメントを、中央部から左右両側へ向かって緩やかに変化させることができる。したがって、折板屋根材３の弾性変形に追随して吊子４をしなやかに弾性変形させながら、同時に、入り隅部分における破断強度も充分に確保することができる。 If the corner of the notch 20 is formed with a curved line having a smaller radius of curvature as it approaches the lower edge of the connecting portion 11 and a radius of curvature that increases as it approaches the left and right edges of the connecting portion 11, the sectional moment of inertia of the suspension 4 It can be gradually changed from the central part toward the left and right sides. Therefore, it is possible to follow the elastic deformation of the folded plate roof material 3 and to elastically deform the suspension 4 flexibly, while at the same time sufficiently securing the breaking strength at the corners.

抜止め爪１５の下端が、受止段部１４より僅かに下側へ突出してあると、折板屋根材３の接合壁８が外膨らみ状に弾性変形するとき、まず接当壁１７が抜止め爪１５の下端に喰い込んで、接合壁８が拡開方向へ滑り移動しようとするのをより確実に規制できる。したがって、外側の折板屋根材３の接合壁８が、拡開状に弾性変形して受止段部１４から抜け外れるのをさらに確実に防止できる。 If the lower end of the retaining pawl 15 protrudes slightly below the receiving step 14, when the joining wall 8 of the folded plate roofing material 3 is elastically deformed outwardly, the contact wall 17 is first removed. By biting into the lower end of the pawl 15, it is possible to more reliably regulate the joining wall 8 from trying to slide and move in the expanding direction. Therefore, it is possible to further reliably prevent the joining wall 8 of the outer folded plate roofing material 3 from elastically deforming in an expanded shape and coming off from the receiving step portion 14.

抜止め爪１５・１６をはぜ受部１２の左右両端と、はぜ受部１２の中央部の複数個所に形成すると、接合壁８が風圧を受けて拡開方向へ滑り移動しようとするのを、各抜止め爪１５・１６で受け止めて、接合壁８がはぜ受部１２から抜け外れるのを確実に規制できる。また、はぜ受部１２の中央部の複数個所に抜止め爪１６を形成することにより、はぜ受部１２の中央部における断面２次モーメントを小さくして、はぜ受部１２の左半部と右半部を、抜止め爪１６の形成部分を中心にして弾性変形させることができる。 If the retaining claws 15 and 16 are formed at the left and right ends of the screw receiving portion 12 and at a plurality of locations in the central portion of the screw receiving portion 12, the joining wall 8 is subjected to wind pressure and tries to slide in the expanding direction. Can be received with the retaining claws 15, 16, and the joining wall 8 can be reliably restricted from coming off from the shell receiving portion 12. Further, by forming retaining claws 16 at a plurality of locations in the central portion of the shell receiving portion 12, the secondary moment at the cross section in the central portion of the shell receiving portion 12 is reduced, so The portion and the right half can be elastically deformed around the portion where the retaining claw 16 is formed.

切欠２０の入り隅部分における破断強度を、吊子４に形成した締結穴１３の破断強度より大きく設定すると、吊子４に最大許容荷重が作用する以前に切欠２０の入り隅部分に破断が生じるのを防止して、吊子式のはぜ接合構造の信頼性を向上できる。 If the breaking strength in the corner portion of the notch 20 is set larger than the breaking strength of the fastening hole 13 formed in the hanging element 4, the breaking corner portion of the notch 20 is broken before the maximum allowable load acts on the hanging element 4. Thus, the reliability of the hanger-type helical joint structure can be improved.

本発明に係る吊子の正面図である。It is a front view of a hanging machine concerning the present invention. 実施例１に係る吊子式のはぜ接合構造の縦断正面図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal front view of a hanger type screw joint structure according to a first embodiment. タイトフレームと吊子の組み付け構造を示す斜視図である。It is a perspective view which shows the assembly | attachment structure of a tight frame and a hanger. はぜ接合構造の詳細を示す縦断正面図である。It is a vertical front view which shows the detail of a screw joint structure. 折板屋根材の変形状態を示す縦断側面図である。It is a vertical side view which shows the deformation | transformation state of a folded-plate roof material. 切欠形状が異なる吊子の強度試験の結果を示す図表である。It is a graph which shows the result of the strength test of the hanging machine from which a notch shape differs. 切欠形状が異なる別の吊子の強度試験の結果を示す図表である。It is a graph which shows the result of the strength test of another hanging machine from which a notch shape differs. 実施例２に係る吊子式のはぜ接合構造の縦断正面図である。It is a vertical front view of the hanger type screw joint structure concerning Example 2. FIG. 実施例２に係る吊子式のはぜ接合構造の縦断側面図である。It is a vertical side view of the hanger type joint structure according to the second embodiment. 実施例３に係る吊子式のはぜ接合構造の縦断正面図である。It is a vertical front view of the hanger type screw joint structure concerning Example 3. FIG. 実施例３に係る吊子式のはぜ接合構造の縦断正面図である。It is a vertical front view of the hanger type screw joint structure concerning Example 3. FIG. 従来のはぜ接合構造が破壊する過程を示す縦断正面図である。It is a vertical front view which shows the process in which the conventional helical junction structure destroys.

（実施例１）図１ないし図７は本発明に係る吊子式のはぜ接合構造の実施例を示す。図２および図３において、符号１は形鋼からなる下地フレーム、符号２は帯板を鋸歯状に形成したタイトフレーム（吊子支持体）、符号３はタイトフレーム２に吊子４を介して装着固定される折板屋根材である。タイトフレーム２は下地フレーム１上に溶接してあり、タイトフレーム２の立壁部に吊子４と逆Ｌ字状の当金５とがボルト６およびナット７で締結してある。図４に示すように、タイトフレーム２の立壁部に連続する上壁２ａと当金５の上壁５ａとで、折板屋根材３の接合部を含む山部頂壁３ａを受け止めている。 (Example 1) FIG. 1 thru | or FIG. 7 shows the Example of the hanger type screw joint structure based on this invention. 2 and 3, reference numeral 1 is a base frame made of a shape steel, reference numeral 2 is a tight frame (suspender support) in which a band plate is formed in a sawtooth shape, and reference numeral 3 is a tight frame 2 via a suspension 4. It is a folded-plate roof material that is mounted and fixed. The tight frame 2 is welded onto the base frame 1, and a hanging member 4 and an inverted L-shaped metal plate 5 are fastened to the standing wall portion of the tight frame 2 with bolts 6 and nuts 7. As shown in FIG. 4, the top wall 3 a including the joined portion of the folded plate roof material 3 is received by the upper wall 2 a continuous to the standing wall portion of the tight frame 2 and the upper wall 5 a of the metal 5.

折板屋根材３は断面が逆台形状に形成された鋼板製のロール成形品からなり、その両側端部分にそれぞれ横向きの山部頂壁３ａを張り出し形成し、山部頂壁３ａの端部に？字状の外接合壁（接合壁）８と内接合壁（接合壁）９とが形成してある。折板屋根材３の両接合壁８・９を吊子４に巻き締めることにより、隣接する折板屋根材３・３とタイトフレーム２とを吊子４を介して分離不能に一体化し支持できる。図２において、符合３ｂは折板屋根材３の谷部底壁、符号３ｃは山部頂壁３ａと谷部底壁３ｂとを繋ぐ傾斜壁である。 The folded plate roofing material 3 is made of a roll-formed product made of a steel plate having a cross section formed in an inverted trapezoidal shape, and is formed by projecting lateral mountain top walls 3a on both end portions thereof, and end portions of the mountain top walls 3a. To? A character-shaped outer joint wall (joint wall) 8 and an inner joint wall (joint wall) 9 are formed. By winding the joint walls 8 and 9 of the folded-plate roof material 3 around the suspension 4, the adjacent folded-plate roof materials 3 and 3 and the tight frame 2 can be integrated and supported through the suspension 4 so as not to be separated. . In FIG. 2, reference numeral 3 b is a valley bottom wall of the folded roof material 3, and reference numeral 3 c is an inclined wall connecting the mountain top wall 3 a and the valley bottom wall 3 b.

図１および図３に示すように吊子４は、タイトフレーム２に固定される連結部１１と、連結部１１の上端に設けられる軒棟方向へ長いはぜ受部１２とを一体に備えたステンレス製のプレス金具からなる。連結部１１は盃形の垂直の板壁からなり、その中央には、先のボルト６を挿通するための締結穴１３が形成してある。はぜ受部１２の連結部１１側の基端には、水平の受止段部１４が形成してある。また、はぜ受部１２の左右両側と、はぜ受部１２の左右中央部の２個所に、抜止め爪１５・１６がはぜ受部１２から下向きに切り起して形成してある。図４に示すように、両接合壁８・９を吊子４の内外に巻き締めた状態においては、先の受止段部１４と抜止め爪１５・１６とが、折板屋根材３の外接合壁８の接当壁１７を協同して受け止めている。 As shown in FIG. 1 and FIG. 3, the hanging element 4 is integrally provided with a connecting portion 11 fixed to the tight frame 2 and a spring receiving portion 12 that is provided at the upper end of the connecting portion 11 and extends in the eaves-ridge direction. It consists of a stainless steel press fitting. The connecting portion 11 is formed of a vertical plate-shaped plate wall, and a fastening hole 13 for inserting the previous bolt 6 is formed at the center thereof. A horizontal receiving step portion 14 is formed at the proximal end of the helical receiving portion 12 on the connecting portion 11 side. Further, retaining claws 15 and 16 are formed by being cut downward and raised from the shell receiving portion 12 at two positions on the left and right sides of the shell receiving portion 12 and the left and right central portion of the screw receiving portion 12. As shown in FIG. 4, in a state where both the joining walls 8 and 9 are wound around the inside and outside of the hanging element 4, the previous receiving step portion 14 and the retaining claws 15 and 16 are attached to the folded plate roof material 3. The joint wall 17 of the outer joint wall 8 is received in cooperation.

図５に想像線で示すように、風圧が作用するときの折板屋根材３は、軒棟方向に隣接するタイトフレーム２の間で、想像線で示すように外膨らみ状に湾曲する。このような状況において、折板屋根材３の外接合壁８が吊子４から抜け外れるのを防止するために、はぜ受部１２の左右半部を折板屋根材３に追随して上向きに弾性変形できるようにしている。つまり、吊子４を柔構造とすることにより、はぜ接合構造が破壊するのを防止している。 As shown by an imaginary line in FIG. 5, the folded roof material 3 when the wind pressure acts is curved like an outward bulge as shown by an imaginary line between the tight frames 2 adjacent in the eaves-ridge direction. In such a situation, in order to prevent the outer joint wall 8 of the folded-plate roofing material 3 from coming off from the suspension 4, the left and right half portions of the shell receiving portion 12 follow the folded-plate roofing material 3 and face upward. Can be elastically deformed. That is, the hanger 4 has a flexible structure, thereby preventing the splice joint structure from being broken.

具体的には、図１に示すように連結部１１の左右両側に入り隅状の切欠２０を形成し、吊子４の左右中央部からはぜ受部１２の左右側端へ近づくほど、吊子４の断面２次モーメントを徐々に小さくして、はぜ受部１２を折板屋根材３に追随して弾性変形可能とした。また、はぜ受部１２の左右幅Ｌを、連結部１１の左右幅Ｂより大きく設定し、連結部１１の両側に突出するはぜ受部１２の左右両端に抜止め爪１５を形成して、左右両端の抜止め爪１５の近傍における断面２次モーメントを小さくした。さらに、切欠２０の入り隅部分の形状を湾曲状に丸めて、連結部１１の入り隅部分における破断強度が締結穴１３の破断強度より大きくなるようにした。この実施例におけるはぜ受部１２の左右幅Ｌは２００ｍｍであり、吊子４の上下寸法は８０ｍｍ、素材となるステンレス板材の厚みは１．２ｍｍとした。 Specifically, as shown in FIG. 1, corner-shaped notches 20 are formed on both the left and right sides of the connecting portion 11, and the hanger 4 becomes closer to the left and right side ends of the screw receiving portion 12 from the left and right center portion of the hanger 4. The secondary moment of the section of the child 4 was gradually reduced, and the shell receiving portion 12 was made to follow the folded roof material 3 to be elastically deformable. Further, the left and right width L of the screw receiving portion 12 is set to be larger than the left and right width B of the connecting portion 11, and retaining claws 15 are formed at both left and right ends of the screw receiving portion 12 protruding on both sides of the connecting portion 11. The cross-section secondary moment in the vicinity of the retaining claws 15 at both the left and right ends was reduced. Further, the shape of the corner portion of the notch 20 is rounded so that the breaking strength at the corner portion of the connecting portion 11 is greater than the breaking strength of the fastening hole 13. In this embodiment, the lateral width L of the screw receiving portion 12 is 200 mm, the vertical dimension of the hanger 4 is 80 mm, and the thickness of the stainless steel plate material is 1.2 mm.

この実施例では、入り隅部分の形状を単に部分円弧状に丸めるのではなく、図１に示すように、切欠２０の形状が、連結部１１の下縁に近づくほど曲率半径が小さく、連結部１１の左右側縁に近づくほど曲率半径が大きくなるように湾曲形状を設定した。これにより、吊子４の断面２次モーメントを、中央部から左右両側へ向かって緩やかに変化させることができ、さらに入り隅部分における破断強度を充分に確保できる。 In this embodiment, the shape of the entering corner is not simply rounded into a partial arc, but as shown in FIG. 1, the radius of curvature decreases as the shape of the notch 20 approaches the lower edge of the connecting portion 11, and the connecting portion The curved shape was set so that the radius of curvature became larger as it approached the left and right side edges. Thereby, the cross-sectional secondary moment of the hanging element 4 can be gradually changed from the central part toward the left and right sides, and the breaking strength at the entering corner part can be sufficiently secured.

図１および図４に示すように、抜止め爪１５・１６の下端は、受止段部１４より符号Ｅの寸法分だけ僅かに下側へ突出してある。そのため、折板屋根材３の接合壁８が風圧を受けて外膨らみ状に弾性変形するときは、まず接当壁１７が抜止め爪１５・１６の下端に喰い込むこととなり、これにより外側の接合壁８が拡開方向へ滑り移動しようとするのを規制できる。したがって、外側の折板屋根材３の接合壁８が、拡開状に弾性変形して受止段部１４から抜け外れるのを防止できる。 As shown in FIGS. 1 and 4, the lower ends of the retaining claws 15, 16 slightly protrude downward from the receiving step portion 14 by the dimension E. Therefore, when the joint wall 8 of the folded-plate roofing material 3 is subjected to wind pressure and elastically deforms into an outward bulging shape, the contact wall 17 first bites into the lower ends of the retaining claws 15 and 16, thereby The joint wall 8 can be restricted from sliding in the expanding direction. Therefore, it is possible to prevent the joining wall 8 of the outer folded plate roof material 3 from being elastically deformed in an expanded shape and coming off from the receiving step portion 14.

また、折板屋根材３が外膨らみ状に湾曲するときは、左右両端の抜止め爪１５が受止段部１４に先行して外接合壁８の弾性変形に追随して弾性変形する。このように、まず左右両端の抜止め爪１５に折板屋根材３の変形力を伝えることにより、吊子４に大きな弾性モーメントを作用させて、はぜ受部１２および連結部１１を折板屋根材３の弾性変形に追随して弾性変形させることができる。この実施例における抜止め爪１５・１６の突出寸法Ｅは、０．５ｍｍを標準寸法にして±０．５ｍｍの許容誤差を許すようにした。 Further, when the folded plate roof material 3 is curved outwardly, the retaining claws 15 at the left and right ends are elastically deformed following the elastic deformation of the outer joint wall 8 preceding the receiving step portion 14. In this way, first, the deformation force of the folded plate roofing material 3 is transmitted to the retaining claws 15 at both the left and right ends, so that a large elastic moment is applied to the suspension 4, and the hull receiving portion 12 and the connecting portion 11 are folded. The roof material 3 can be elastically deformed following the elastic deformation of the roof material 3. In this embodiment, the projection dimension E of the retaining claws 15 and 16 is set to allow a tolerance of ± 0.5 mm with 0.5 mm as a standard dimension.

切欠２０の入り隅形状は、例えば図６や図７に示すように種々に変更できるが、こうした入り隅形状の違いは、はぜ受部１２の弾性変形の度合に影響する。さらに、連結部１１の破断強度に関しては、入り隅形状の違いはもちろんのこと、入り隅部分が丸めてあるか否かが大きく影響する。こうした切欠２０の入り隅形状の影響を検証するために、図６および図７に示す試験片を形成し、各試験片について引っ張り試験を行なった。 The entering corner shape of the notch 20 can be variously changed as shown in FIGS. 6 and 7, for example, but the difference in the entering corner shape affects the degree of elastic deformation of the shell receiving portion 12. Furthermore, regarding the breaking strength of the connecting portion 11, not only the difference in the shape of the entering corner, but also whether the entering corner portion is rounded or not is greatly affected. In order to verify the effect of the corner shape of the notch 20, test pieces shown in FIGS. 6 and 7 were formed, and a tensile test was performed on each test piece.

図６に示す各試験片は、左右幅Ｌが２００ｍｍ、上下寸法が８０ｍｍ、厚みが１．２ｍｍのステンレス板材を使用した。各試験片において、（１−Ａ）は左右の下隅に切欠２０を設けない場合、（１−Ｂ）は直線状の切欠２０を設けた場合、（１−Ｃ）は半径Ｒが大きな部分円弧で切欠２０を形成した場合を示している。また、（１−Ｄ）から（１−Ｈ）では試験片をＴ字状に形成して、切欠２０の入り隅部の半径Ｒを徐々に小さくした。 Each test piece shown in FIG. 6 uses a stainless steel plate having a left-right width L of 200 mm, a vertical dimension of 80 mm, and a thickness of 1.2 mm. In each test piece, (1-A) is a partial arc having a large radius R when (1-B) is not provided with a notch 20 at the lower left and right corners, (1-B) is provided with a linear notch 20. The case where the notch 20 is formed is shown. In (1-D) to (1-H), the test piece was formed in a T shape, and the radius R of the corner of the cutout 20 was gradually reduced.

得られた試験結果を図６の図表に示している。図表における入り隅半径％とは、吊子４の左右幅Ｌの半分の値を１００％とするときの、入り隅部を形成する半径の百分率である。また、図表におけるたわみは、折板屋根材３の弾性変形に追随できないものを×印で、折板屋根材３の弾性変形にある程度追随できるものを△印で、折板屋根材３の弾性変形によく追随できるものを○印で表した。 The test results obtained are shown in the chart of FIG. The entering corner radius% in the chart is a percentage of the radius forming the entering corner portion when the value of half of the left and right width L of the hanging element 4 is 100%. Further, the deflection in the chart is indicated by a cross mark that cannot follow the elastic deformation of the folded-plate roof material 3, and a mark mark that can follow the elastic deformation of the folded-plate roof material 3 to some extent, and the elastic deformation of the folded-plate roof material 3 Items that can be followed well are marked with a circle.

図６の図表から明らかなとおり、（１−Ａ）および（１−Ｂ）の試験片は、折板屋根材３の弾性変形に追随できない。また、（１−Ｇ）および（１−Ｈ）の試験片は、最大許容荷重が作用する以前に切欠２０の入り隅部分で破断が生じており、連結部１１の破断強度を満足できない。残る（１−Ｃ）〜（１−Ｆ）の試験片は、折板屋根材３の弾性変形に追随でき、しかも、連結部１１の破断強度を満足できるものであった。試験片（１−Ｃ）〜（１−Ｆ）における入り隅部の半径の百分率は２０〜２５０％であった。 As is apparent from the chart of FIG. 6, the test pieces (1-A) and (1-B) cannot follow the elastic deformation of the folded plate roof material 3. In addition, the test pieces (1-G) and (1-H) are broken at the corners of the notches 20 before the maximum allowable load is applied, and the breaking strength of the connecting portion 11 cannot be satisfied. The remaining test pieces (1-C) to (1-F) were able to follow the elastic deformation of the folded roof material 3 and satisfy the breaking strength of the connecting portion 11. The percentage of the radius of the corner in the test pieces (1-C) to (1-F) was 20 to 250%.

図７に示す各試験片は、左右幅Ｌが１５０ｍｍ、上下寸法が８０ｍｍ、厚みが１．２ｍｍのステンレス板材を使用した。各試験片において、（２−Ａ）は左右の下隅に切欠２０を設けない場合、（２−Ｂ）は直線状の切欠２０を設けた場合、（２−Ｃ）は半径Ｒが大きな部分円弧で切欠２０を形成した場合を示している。また、（２−Ｄ）から（２−Ｈ）では試験片をＴ字状に形成して、切欠２０の入り隅部の半径Ｒを徐々に小さくした。 Each test piece shown in FIG. 7 uses a stainless steel plate having a left-right width L of 150 mm, a vertical dimension of 80 mm, and a thickness of 1.2 mm. In each test piece, (2-A) is a case where no notch 20 is provided in the left and right lower corners, (2-B) is a case where a straight notch 20 is provided, and (2-C) is a partial arc having a large radius R. The case where the notch 20 is formed is shown. In (2-D) to (2-H), the test piece was formed in a T shape, and the radius R of the corner of the cutout 20 was gradually reduced.

得られた試験結果を図７の図表に示している。図表における入り隅半径％とは、左右幅Ｌの半分の値を１００％とするときの、入り隅部を形成する半径の百分率である。また、図表におけるたわみは、折板屋根材３の弾性変形に追随できないものを×印で、折板屋根材３の弾性変形にある程度追随できるものを△印で、折板屋根材３の弾性変形によく追随できるものを○印および◎印で表した。 The test results obtained are shown in the chart of FIG. The entering corner radius% in the chart is the percentage of the radius forming the entering corner when the value of half of the left-right width L is 100%. Further, the deflection in the chart is indicated by a cross mark that cannot follow the elastic deformation of the folded-plate roof material 3, and a mark mark that can follow the elastic deformation of the folded-plate roof material 3 to some extent, and the elastic deformation of the folded-plate roof material 3 Items that can be followed well are indicated by ○ and ◎.

図７の図表から明らかなとおり、（２−Ａ）および（２−Ｂ）の試験片は、折板屋根材３の弾性変形に追随できない。また、（２−Ｇ）および（２−Ｈ）の試験片は、最大許容荷重が作用する以前に切欠２０の入り隅部分で破断が生じており、連結部１１の破断強度を満足できない。残る（２−Ｃ）〜（２−Ｆ）の試験片は、折板屋根材３の弾性変形に追随でき、しかも、連結部１１の破断強度を満足できるものであった。試験片（２−Ｃ）〜（２−Ｆ）における入り隅部の半径の百分率は２７〜２００％であった。図６および図７の試験結果から、はぜ受部１２の左右半部の長さを１００％とするとき、切欠２０の入り隅部の半径値は、２０ないし２５０％の百分率の円弧を含んで湾曲線状に形成することが好ましいということができる。 As apparent from the chart of FIG. 7, the test pieces of (2-A) and (2-B) cannot follow the elastic deformation of the folded plate roof material 3. Further, the test pieces (2-G) and (2-H) are broken at the corners of the notches 20 before the maximum allowable load is applied, and the breaking strength of the connecting portion 11 cannot be satisfied. The remaining test pieces (2-C) to (2-F) were able to follow the elastic deformation of the folded roof material 3 and satisfy the breaking strength of the connecting portion 11. The percentage of the radius of the corner in the test pieces (2-C) to (2-F) was 27 to 200%. From the test results of FIGS. 6 and 7, when the length of the left and right half portions of the flange receiving portion 12 is 100%, the radius value of the corner of the notch 20 includes a circular arc with a percentage of 20 to 250%. It can be said that it is preferable to form a curved line.

（実施例２）図８および図９は本発明に係る吊子式のはぜ接合構造を、二重構造の折板屋根に適用した実施例２を示す。そこでは、内屋根３０と外屋根３１、および両屋根３０・３１の間に配置したグラスウールマットなどの断熱体３２とで、二重構造の折板屋根を構成している。内屋根３０は実施例１と同様にして折板屋根を構築するので、その説明を省略し、主な符号を付しておくにとどめる。 (Example 2) FIG. 8 and FIG. 9 shows Example 2 which applied the hanger type joint structure which concerns on this invention to the folded-plate roof of a double structure. In this case, the inner roof 30, the outer roof 31, and the heat insulating body 32 such as a glass wool mat disposed between the roofs 30 and 31 constitute a double-layer folded plate roof. Since the inner roof 30 constructs a folded-plate roof in the same manner as in the first embodiment, the description thereof is omitted and only main symbols are given.

外屋根３１は、基本的に内屋根３０と同様に構成するが、内屋根３０の連結部（はぜ接合部分）Ｃに固定した吊子台（吊子支持体）２で外屋根３１の吊子４を支持する点が、内屋根３０と異なる。吊子台２は、先の連結部Ｃを挟持する左右一対の脚片３４と、脚片３４の上部に挟持固定されるプラスチック製の吊子ホルダー３５などで構成する。プレス金具からなる一対の脚片３４の下部には、連結部Ｃのくびれ部分を挟持するΩ字状の係合部３６が形成され、一対の脚片３４の上部には、吊子ホルダー３５を挟持するＵ字状の締結部３７が形成してある。吊子ホルダー３５は断面がＴ字状に形成してあり、その上端の両側には、外屋根３１側の山部頂壁３ａを受け止める受壁３５ａが張り出してある。吊子２は、その連結部１１が吊子ホルダー３５の中央部に設けたスリット３８に装填される。 The outer roof 31 is basically configured in the same manner as the inner roof 30, but the outer roof 31 is suspended by a suspension base (suspender support) 2 fixed to a connecting portion (shell joint portion) C of the inner roof 30. The point which supports the child 4 is different from the inner roof 30. The hanging base 2 is composed of a pair of left and right leg pieces 34 that sandwich the previous connecting portion C, and a plastic hanging holder 35 that is sandwiched and fixed to the upper part of the leg piece 34. An Ω-shaped engaging portion 36 that sandwiches the constricted portion of the connecting portion C is formed at the lower part of the pair of leg pieces 34 made of a press fitting, and a hanging element holder 35 is provided above the pair of leg pieces 34. A U-shaped fastening portion 37 is formed to be sandwiched. The suspension holder 35 has a T-shaped cross section, and a receiving wall 35a for receiving the mountain top wall 3a on the outer roof 31 side protrudes on both sides of the upper end. The hanging part 2 is loaded in a slit 38 whose connecting part 11 is provided in the central part of the hanging part holder 35.

吊子台２は、下屋根３０の連結部Ｃに対して、図８に示すように締結される。詳しくは、脚片３４の係合部３６を連結部Ｃのくびれ部分に係合して、両脚片３４をボルト４０およびナット４１で締結する。さらに締結部３７に吊子ホルダー３５を吊子４とともに装填して、これら三者３７・３５・４を、締結部３７を横断するボルト４２と、同ボルト４２にねじ込まれるナット４３で締結固定する。この状態の吊子４に対して、外屋根３１を構成する折板屋根材３の両接合壁８・９を巻き締めることにより、隣接する折板屋根材３・３を、吊子４と吊子台２を介して下屋根３０と分離不能に一体化できる。 The hanging platform 2 is fastened to the connecting portion C of the lower roof 30 as shown in FIG. Specifically, the engaging portion 36 of the leg piece 34 is engaged with the constricted portion of the connecting portion C, and the both leg pieces 34 are fastened by the bolt 40 and the nut 41. Further, the suspension holder 35 is loaded in the fastening portion 37 together with the suspension 4, and these three members 37, 35, 4 are fastened and fixed by a bolt 42 crossing the fastening portion 37 and a nut 43 screwed into the bolt 42. . The adjacent folded-plate roof materials 3 and 3 are suspended from the hanging element 4 by tightening the joint walls 8 and 9 of the folded-sheet roofing material 3 constituting the outer roof 31 with respect to the hanging element 4 in this state. It can be integrated with the lower roof 30 through the child stand 2 so as not to be separated.

（実施例３）図１０および図１１は、本発明に係る吊子式のはぜ接合構造を、実施例２と同様に二重構造の折板屋根に適用した実施例３であるが、吊子台（吊子支持体）２の構造が異なる。吊子台２は、内屋根３０の連結部Ｃを挟持する左右一対の脚片３４と、脚片３４の上部に挟持固定されるプラスチック製のガイドブロック４５と、ガイドブロック４５で軒棟方向へスライド可能に支持される、左右一対の吊子ホルダー４６などで構成する。脚片３４および吊子ホルダー４６はプレス金具からなる。 (Example 3) FIG. 10 and FIG. 11 are Example 3 which applied the hanger-type screw joint structure based on this invention to the double-folded folded-plate roof like Example 2, The structure of the child stand (hanger support) 2 is different. The hanging base 2 includes a pair of left and right leg pieces 34 that sandwich the connecting portion C of the inner roof 30, a plastic guide block 45 that is sandwiched and fixed to the upper part of the leg piece 34, and the guide block 45 toward the eaves. It is composed of a pair of left and right suspension holders 46 that are slidably supported. The leg piece 34 and the suspension holder 46 are made of a press fitting.

一対の脚片３４の下部には、連結部Ｃのくびれ部分を挟持するΩ字状の係合部３６が形成してある。ガイドブロック４５は、ガイド部４７と、ガイド部４７の下面中央に突設される脚部４８とで断面がＴ字状に形成してあり、脚部４８を一対の脚片３４の間に挟持した状態で、ボルト４０およびナット４１で締結固定することにより、脚片３４と一体化してある。吊子ホルダ４６の下部には、先のガイド部４７で案内支持される横臥Ｃ字状のスライド部４９が設けてあり、吊子ホルダ４６の上端左右には、外屋根３１側の山部頂壁３ａを受け止める受壁４６ａが張り出してある。スライド部４９をガイド部４７に係合し、左右の吊子ホルダ４６をボルト４２、およびナット４３で締結することにより、吊子４が吊子台２に固定される。この状態の吊子４に対して、外屋根３１を構成する折板屋根材３の両接合壁８・９を巻き締めることにより、隣接する折板屋根材３・３を、吊子４と吊子台２を介して下屋根３０と分離不能に一体化できる。実施例２、３で説明したように、本発明に係る吊子式のはぜ接合構造は、二重構造の折板屋根の外屋根３１に適用して、実施例１の折板屋根と同様に、はぜ接合構造が風圧を受けて破壊されるのを解消できる。 At the lower part of the pair of leg pieces 34, an Ω-shaped engaging portion 36 that sandwiches the constricted portion of the connecting portion C is formed. The guide block 45 has a T-shaped cross section formed by a guide portion 47 and a leg portion 48 protruding from the center of the lower surface of the guide portion 47, and the leg portion 48 is sandwiched between a pair of leg pieces 34. In this state, it is integrated with the leg piece 34 by fastening and fixing with the bolt 40 and the nut 41. At the bottom of the suspension holder 46, there is a horizontal C-shaped slide portion 49 that is guided and supported by the previous guide portion 47. A receiving wall 46a for receiving the wall 3a is overhanging. By engaging the slide portion 49 with the guide portion 47 and fastening the left and right suspension holders 46 with bolts 42 and nuts 43, the suspension 4 is fixed to the suspension base 2. The adjacent folded-plate roof materials 3 and 3 are suspended from the hanging element 4 by tightening the joint walls 8 and 9 of the folded-sheet roofing material 3 constituting the outer roof 31 with respect to the hanging element 4 in this state. It can be integrated with the lower roof 30 through the child stand 2 so as not to be separated. As described in the second and third embodiments, the hanger type joint structure according to the present invention is applied to the outer roof 31 of the double-layer folded-plate roof, and is similar to the folded-plate roof of the first embodiment. In addition, it is possible to eliminate the breakage of the welded joint structure due to wind pressure.

上記の実施例では、切欠２０の入り隅形状を、曲率半径が異なる複数の湾曲線を連続して形成したがその必要はなく、図６および図７に例示したように、入り隅形状は部分円弧で形成することができる。抜止め爪１５は少なくともはぜ受部１２の左右両端に形成してあればよいが、必要があれば、左右の抜止め爪１５・１５の間の３個所以上に抜止め爪１６を設けることができる。抜止め爪１５・１６は受止段部１４の壁面を利用して形成することができる。また、はぜ受部１２と受止段部１４との隅部を下向きに打ち出して、リブ状の抜止め爪１５・１６を形成することができる。 In the above embodiment, the corner shape of the notch 20 is formed by continuously forming a plurality of curved lines having different curvature radii. However, as illustrated in FIGS. 6 and 7, the corner shape is a partial shape. It can be formed by an arc. The retaining claws 15 may be formed at least at both the left and right ends of the flange receiving portion 12, but if necessary, the retaining claws 16 may be provided at three or more locations between the left and right retaining claws 15 and 15. Can do. The retaining claws 15 and 16 can be formed using the wall surface of the receiving step portion 14. Further, the rib-shaped retaining claws 15 and 16 can be formed by punching the corners of the shell receiving portion 12 and the receiving stepped portion 14 downward.

連結部１１の左右幅Ｂは、はぜ受部１２の左右幅Ｌと同じにすることができる。タイトフレーム２の構造は実施例で説明した構造には限定しない。折板屋根材３は複数個の山部分と谷部分とが連続する構造であってもよい。二重構造の折板屋根においては、本発明に係る吊子４を、内屋根３０と外屋根３１の双方に適用することが好ましいが、少なくとも内屋根３０と外屋根３１のいずれか一方に適用してあってもよい。 The left-right width B of the connecting portion 11 can be made the same as the left-right width L of the flange receiving portion 12. The structure of the tight frame 2 is not limited to the structure described in the embodiment. The folded roof material 3 may have a structure in which a plurality of peak portions and valley portions are continuous. In the double structure folded-plate roof, it is preferable to apply the hanging element 4 according to the present invention to both the inner roof 30 and the outer roof 31, but to at least one of the inner roof 30 and the outer roof 31. It may be.

２吊子支持体（タイトフレーム、吊子台）
３折板屋根材
４吊子
８外側の接合壁
９内側の接合壁
１１連結部
１２はぜ受部
１４受止段部
１５抜止め爪
１７接当壁
２０切欠 2 Hanging support (tight frame, hanging stand)
3 Folded plate roofing material 4 Hanging element 8 Outer joint wall 9 Inner joint wall 11 Connecting part 12 Fleece receiving part 14 Receiving step part 15 Stopping claw 17 Contacting wall 20 Notch

Claims

Adjacent folded-plate roofing material (3) is a hanger-type screw joint structure that is connected and fixed via a hanger (4) fixed to a hanger support (2),
The hanger (4) includes a connecting portion (11) fixed to the hanger support (2), and a spring receiving portion (12) provided at the upper end of the connecting portion (11) and extending in the eaves-ridge direction. Has
A receiving step (14) and a retaining step for jointly receiving the joint wall (8) of the outer folded plate roofing material (3) at the base end on the connecting portion (11) side of the spring receiving portion (12) Nails (15) are provided,
A corner-shaped notch (20) that promotes elastic deformation of the hanger (4) is formed on both the left and right sides of the connecting portion (11),
A hanging-type screw joint structure in which a corner portion of the notch (20) is rounded into a curved line.

When the length of the left and right half of the screw receiving portion (12) is 100%,
The hanging-type helical joint structure according to claim 1, wherein the corners of the notches (20) are formed in a curved line shape including an arc having a radius value of 20 to 250%.

The left and right width (L) of the screw receiving portion (12) is set larger than the left and right width (B) of the connecting portion (11),
The suspension-type screw joint structure according to claim 2, wherein the retaining claws (15) are formed at both left and right ends of the screw receiving portion (12) protruding on both sides of the connecting portion (11).

The curved corner of the notch (20) is formed by a curved line having a smaller radius of curvature as it approaches the lower edge of the connecting portion (11) and a radius of curvature that increases as it approaches the left and right edges of the connecting portion (11). The hanging-type screw joint structure according to 2 or 3.

The hanger-type screw joint structure according to claim 2, 3 or 4, wherein a lower end of the retaining claw (15) projects slightly downward from the receiving step (14).

6. The retaining claws (15, 16) are formed at the left and right ends of the shell receiving portion (12) and at a plurality of locations at the center of the shell receiving portion (12). The hanger type screw joint structure.

The hanger (4) is fastened and fixed to the hanger support (2) with a bolt (6) through a fastening hole (13) passed through the connecting portion (11).
The hanging-type helical joint structure according to any one of claims 1 to 6, wherein a breaking strength at a corner portion of the notch (20) is set to be larger than a breaking strength of the fastening hole (13).