JP2015190301A - Fall prevention structure of ceiling - Google Patents

Fall prevention structure of ceiling Download PDF

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JP2015190301A
JP2015190301A JP2014070921A JP2014070921A JP2015190301A JP 2015190301 A JP2015190301 A JP 2015190301A JP 2014070921 A JP2014070921 A JP 2014070921A JP 2014070921 A JP2014070921 A JP 2014070921A JP 2015190301 A JP2015190301 A JP 2015190301A
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ceiling
ceiling panel
field edge
field
prevention structure
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JP6225059B2 (en
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孝 浅野
Takashi Asano
孝 浅野
裕明 東
Hiroaki Higashi
裕明 東
直己 末本
Naoki Suemoto
直己 末本
功 海野
Isao Unno
功 海野
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Fujita Corp
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Fujita Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a fall prevention structure of the ceiling, constructible, without impairing an appearance of the ceiling, and without lengthening a construction period or increasing cost.SOLUTION: The ceiling comprises a plurality of ceiling joists 14 for installing a ceiling panel 15 on an under surface, a plurality of ceiling joist receivers 13 substantially orthogonally joined on these ceiling joists 14 and a plurality of suspension bolts 11 for suspending-supporting these ceiling joist receivers 13, and comprises a support material 2 arranged on an under surface of the ceiling panel 15 and extending in the substantially parallel direction to the ceiling joist receivers 13 and a suspension metal fitting 3 inserted into a through-hole opened in the ceiling panel 15, having an upper part fixed to the ceiling joist receivers 13 and having a lower part abutting on an under surface of the support material 2.

Description

本発明は、天井パネルが取り付けられる野縁と野縁受けからなる天井下地材を吊りボルトによって吊支した天井であって、特に、既存天井の落下防止に有用な構造に関する。   The present invention relates to a ceiling in which a ceiling base material composed of a field edge to which a ceiling panel is attached and a field edge support is suspended by suspension bolts, and particularly relates to a structure useful for preventing falling of an existing ceiling.

例えば鉄筋コンクリート造のオフィスビル、商業施設などの建物の天井には、吊り天井が多く用いられている。この種の天井は、所定間隔で水平かつ互いに平行に並設される複数の野縁と、この野縁と直交する方向へ延び、水平かつ互いに平行に並設されると共に前記複数の野縁の上に金具（クリップ）を介して結合される複数の野縁受けによって天井下地材を構築し、この天井下地材を、下端が前記野縁受けに金具（ハンガー）を介して結合されると共に上端が上階の床スラブ等に固定される複数の吊りボルトによって吊支し、下階の天井面を形成する天井パネルを前記野縁の下面にビス等によって一体に取り付けた構造となっている（例えば下記の特許文献１参照）。   For example, suspended ceilings are often used for the ceilings of buildings such as reinforced concrete office buildings and commercial facilities. This type of ceiling has a plurality of field edges that are arranged horizontally and parallel to each other at a predetermined interval, and extends in a direction perpendicular to the field edges, and is arranged horizontally and parallel to each other, and A ceiling base material is constructed by a plurality of field receivers that are coupled to each other via metal fittings (clips), and a lower end of the ceiling base material is coupled to the field edge receptacles via metal fittings (hangers) and an upper end. Is suspended by a plurality of suspension bolts fixed to the floor slab or the like of the upper floor, and the ceiling panel forming the ceiling surface of the lower floor is integrally attached to the lower surface of the field edge by screws or the like ( For example, see Patent Document 1 below).

また、従来このような構造の既存の天井は、地震発生時に大きく横揺れすると、その端部が壁などに衝突して、その衝撃によって天井パネルやそれを取り付けた野縁が落下するおそれがある。そして、このような落下事故を防止するための方策としては、天井パネルの下面に防護ネットを設置したり（例えば下記の特許文献２参照）、天井裏空間にワイヤを設置して二次部材で野縁などを緊結したり、補強金具で野縁と野縁受けの結合部を補強すること（例えば下記の特許文献３参照）などが知られている。   In addition, when an existing ceiling having such a structure is shaken greatly in the event of an earthquake, the end of the ceiling may collide with a wall or the like, and the impact may cause the ceiling panel or the field edge to which the ceiling is attached to fall. . And as a measure for preventing such a fall accident, a protective net is installed on the lower surface of the ceiling panel (see, for example, Patent Document 2 below), or a wire is installed in the space behind the ceiling with a secondary member. It is known to tie a field edge or the like, or to reinforce a joint between a field edge and a field edge receiver with a reinforcing metal fitting (for example, see Patent Document 3 below).

特開２００７−２９１７６１号公報JP 2007-291762 A 特開２０１３−０８７５３０号公報JP 2013-087530 A 特開２０１３−０８５００２号公報JP2013-085002A

しかしながら、天井の下面に防護ネットを設置することは、外観上好ましいとは言えないものであり、ワイヤや補強金具で野縁と野縁受けの結合部などを緊結して補強する方法は、天井裏空間内での工事となるため、施工の際に天井内足場などの設置が必要となり、しかも施工対象個所が多いため、工期が長くなったり費用がかさんだりするといった問題があった。   However, installing a protective net on the lower surface of the ceiling is not preferable in terms of appearance, and the method of tightly reinforcing the joint between the field edge and the field edge receiver with a wire or a reinforcing bracket is the ceiling. Since the work is performed in the back space, it is necessary to install a scaffold in the ceiling at the time of construction, and since there are many places to be constructed, there is a problem that the construction period is long and the cost is high.

本発明は、以上のような点に鑑みてなされたものであって、その技術的課題とするところは、天井の外観を損なわず、かつ工期が長くなったり費用がかさんだりせずに施工することの可能な天井の落下防止構造を提供することにある。   The present invention has been made in view of the above points, and the technical problem is that the appearance of the ceiling is not impaired and the construction period is not increased and the cost is not increased. An object of the present invention is to provide a ceiling fall prevention structure that can be performed.

上述した技術的課題を有効に解決するための手段として、請求項１の発明に係る天井の落下防止構造は、下面に天井パネルが取り付けられる複数の野縁及びこの野縁の上に略直交して結合される複数の野縁受けと、この野縁受けを吊支する複数の吊ボルトとを備える天井において、天井パネルの下面に配置されて前記野縁受けと略平行な方向へ延びる支持材と、前記天井パネルに開設した貫通孔に挿通されると共に上部が前記野縁受けに掛止され下部が前記支持材の下面に当接される吊金具を備えるものである。   As a means for effectively solving the technical problem described above, the ceiling fall prevention structure according to the invention of claim 1 is substantially orthogonal to a plurality of field edges on which a ceiling panel is attached to the lower surface and the field edges. And a plurality of suspension bolts for supporting the field edge receiver, and a support member disposed on the lower surface of the ceiling panel and extending in a direction substantially parallel to the field edge receiver. And a suspension fitting that is inserted into a through-hole formed in the ceiling panel and that has an upper portion hooked on the field edge receiver and a lower portion in contact with the lower surface of the support member.

請求項１の構成によれば、吊金具は、支持材を介して天井パネルを野縁受けに吊支するものであり、言い換えれば、野縁とその下面に取り付けられた天井パネルを野縁受けと支持材との間に挟み込んだ状態に設けることによって、野縁からの天井パネルの分離あるいは野縁受けからの野縁の分離による落下を防止するものである。そしてこの吊金具は、天井パネルの下側から、この天井パネルに開設した貫通孔を通して上部を野縁受けに掛止させると共に、下部を天井パネルの下面に配置した支持材に当接させることで取り付けることができる。   According to the configuration of the first aspect, the hanging bracket suspends the ceiling panel on the field edge receiver via the support member, in other words, the field edge and the ceiling panel attached to the lower surface thereof. By being provided in a state of being sandwiched between the base material and the support material, the fall due to separation of the ceiling panel from the field edge or separation of the field edge from the field edge receiver is prevented. And this hanging bracket allows the upper part to be hooked on the edge receiver from the lower side of the ceiling panel through the through-hole established in this ceiling panel, and the lower part is brought into contact with the support material arranged on the lower surface of the ceiling panel. Can be attached.

請求項２の発明に係る天井の落下防止構造は、請求項１に記載された構成において、吊金具は、天井パネルに開設された貫通孔に挿通されて上端が野縁受けに掛止可能な屈曲形状のフックが形成され下部に雄螺子が形成された軸部材と、前記雄螺子に螺合されるナットと、前記軸部材の周りに回転可能かつ軸方向移動可能に設けられると共に前記ナットによって支持材に押し付けられる受け板からなるものであり、前記貫通孔が、前記フックを通すことが可能なスリット状をなすものである。   According to a second aspect of the invention, in the structure for preventing fall of the ceiling according to the first aspect, the suspension fitting is inserted into a through-hole formed in the ceiling panel so that the upper end can be hooked on the edge receiver. A shaft member in which a bent hook is formed and a male screw is formed in the lower portion; a nut that is screwed into the male screw; and a shaft that is rotatable and axially movable around the shaft member. It consists of a backing plate pressed against the support material, and the through hole forms a slit shape through which the hook can pass.

請求項２の構成によれば、天井パネルに開設したスリット状の貫通孔を通して軸部材のフックを野縁受けの高さ以上まで押し上げてから、これを適当に回転させながら野縁受けに引っ掛け、軸部材の下部の雄螺子にナットで受け板を支持材に締め付けることによって、野縁とその下面に取り付けられた天井パネルを野縁受けと支持材との間に挟み込んだ状態に設けることができる。   According to the configuration of claim 2, after pushing the hook of the shaft member up to the height of the field receiver through the slit-shaped through hole established in the ceiling panel, it is hooked on the field receiver while rotating it appropriately. By tightening the receiving plate to the supporting member with a nut on the male screw at the lower part of the shaft member, the ceiling panel attached to the field edge and the lower surface thereof can be sandwiched between the field edge receiving material and the supporting material. .

本発明に係る天井の落下防止構造によれば、吊金具によって、支持材を介して天井パネル及び野縁を野縁受けに懸吊するものであるため、地震などによる野縁及び天井パネルの落下事故を有効に防止することができる。そして天井パネルの下側から、この天井パネルに開設した貫通孔を通して吊金具の上部を野縁受けに掛止させ、下部を天井パネルの下面に配置した支持材に緊結することで施工されるため、天井内足場などの設置が不要であり、工期や費用を軽減することができ、しかも防護ネットのように天井の下面全体を覆うものではないため、外観を損なわない。   According to the ceiling fall prevention structure of the present invention, the ceiling panel and the field edge are suspended from the field edge receiver via the support member by the hanging metal fittings. Accidents can be effectively prevented. And from the lower side of the ceiling panel, the upper part of the hanging bracket is hooked to the edge receiver through the through hole established in the ceiling panel, and the lower part is fastened to the support material arranged on the lower surface of the ceiling panel. The installation of a scaffolding in the ceiling is unnecessary, the construction period and costs can be reduced, and the entire lower surface of the ceiling is not covered like a protective net, so the appearance is not impaired.

本発明に係る天井の落下防止構造の好ましい実施の形態を、室内空間と共に示す説明図である。It is explanatory drawing which shows preferable embodiment of the fall prevention structure of the ceiling which concerns on this invention with indoor space. 本発明に係る天井の落下防止構造の好ましい実施の形態を示す要部断面図である。It is principal part sectional drawing which shows preferable embodiment of the fall prevention structure of the ceiling which concerns on this invention. 本発明に係る天井の落下防止構造の好ましい実施の形態を示す要部下面図である。It is a principal part bottom view which shows preferable embodiment of the fall prevention structure of the ceiling which concerns on this invention. 本発明に係る天井の落下防止構造の好ましい実施の形態において、天井パネルに開設した貫通孔へ吊金具の上部を挿入する作業を示す斜視図である。It is a perspective view which shows the operation | work which inserts the upper part of a suspension metal fitting into the through-hole opened in the ceiling panel in preferable embodiment of the fall prevention structure of the ceiling based on this invention.

以下、本発明に係る天井の落下防止構造の好ましい実施の形態について、図面を参照しながら説明する。まず図１において、参照符号１は天井、参照符号１００は鉄骨鉄筋コンクリート造などの建物における躯体スラブ、１０１は建物における壁面、１０２は天井１の外周部の下面に沿ってと壁面１０１に設けた天井廻縁、１０３は床面、１０４は壁面１０１の下部に設けた幅木（蹴込）、Ｓ１は天井１の下側の室内空間、Ｓ２は天井１の上側の天井裏空間である。   Hereinafter, a preferred embodiment of a ceiling fall prevention structure according to the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 is a ceiling, reference numeral 100 is a frame slab in a building such as a steel reinforced concrete structure, 101 is a wall surface in the building, 102 is a ceiling provided on the wall surface 101 along the lower surface of the outer peripheral portion of the ceiling 1. The surrounding edge, 103 is a floor surface, 104 is a skirting board (kick) provided at the lower part of the wall surface 101, S1 is an indoor space below the ceiling 1, and S2 is a ceiling back space above the ceiling 1.

天井１は、既設の天井であって吊天井構造となっており、図１及び図２に示すように、躯体スラブ１００に垂設した多数の吊りボルト１１の下端に吊金具であるハンガー１２を介してめっき鋼板等を断面コ字形に成形した棒状の複数の野縁受け１３を水平かつ互いに平行に吊支し、この野縁受け１３の下に、不図示の結合金具を介してめっき鋼板等を断面コ字形に成形した棒状の複数の野縁１４を直交するように、水平かつ互いに平行に取り付けることによって、格子状の天井下地材を構築し、野縁１４の下面に耐火ボードからなる多数の天井パネル１５を互いに縦横に並べて敷き詰めた状態に取り付けたものである。なお、参照符号１６は天井１に取り付けられた照明器具である。   The ceiling 1 is an existing ceiling and has a suspended ceiling structure. As shown in FIGS. 1 and 2, a hanger 12, which is a hanging metal fitting, is attached to the lower ends of a number of suspension bolts 11 suspended from the housing slab 100. A plurality of rod-shaped field edge receivers 13 formed with a plated steel sheet or the like having a U-shaped cross section are suspended horizontally and parallel to each other, and a plated steel sheet or the like is provided under the field edge receiver 13 via a coupling fitting (not shown). A grid-like ceiling base material is constructed by attaching a plurality of bar-shaped field edges 14 formed in a U-shaped cross section so as to be orthogonal to each other so as to be orthogonal to each other. The ceiling panels 15 are attached in a state where they are laid side by side vertically and horizontally. Reference numeral 16 denotes a lighting fixture attached to the ceiling 1.

天井１の天井パネル１５の下面には、複数の細長い支持材２が互いに平行に配置されている。この支持材２は、例えばＣＦＲＰラミネート（炭素繊維板）、軽量鉄骨、鋼板などから選択された材料からなるものであって、図３に示すように、野縁受け１３と略平行な方向（野縁１４と略直交する方向）へ延びている。   On the lower surface of the ceiling panel 15 of the ceiling 1, a plurality of elongated support members 2 are arranged in parallel to each other. This support material 2 is made of a material selected from, for example, CFRP laminate (carbon fiber plate), lightweight steel frame, steel plate, and the like, and as shown in FIG. Extending in a direction substantially perpendicular to the edge 14).

支持材２は、それぞれその長手方向複数個所で、吊金具３によって野縁受け１３に吊支されている。詳しくは、この吊金具３は、図２及び図４などに示すように、天井パネル１５に開設された貫通孔１５ａに挿通されて上端が野縁受け１３に掛止可能な屈曲形状のフック３１ａが形成され下部に雄螺子３１ｂが形成された軸部材３１と、この軸部材３１の雄螺子３１ｂに螺合されるナット（好ましくはダブルナット）３２と、軸部材３１の下部の周りに回転可能かつ軸方向移動可能に設けられると共にナット３２によって支持材２の下面に押し付けられる受け板３３と、ナット３２と受け板３３の間に介在されるワッシャ３４からなるものである。軸部材３１は、野縁受け１３の上面と天井パネル１５の下面との距離ｈ（図２参照）よりも、少なくともナット３２とワッシャ３４と受け板３３の厚さの和以上長いものとなっている。   The support material 2 is suspended and supported by the field edge receiver 13 by a hanging metal fitting 3 at a plurality of locations in the longitudinal direction. Specifically, as shown in FIG. 2 and FIG. 4, the hanging fitting 3 is inserted into a through hole 15 a formed in the ceiling panel 15, and a bent hook 31 a whose upper end can be hooked on the field receiver 13. The shaft member 31 is formed with a male screw 31b at the bottom, a nut (preferably a double nut) 32 that is screwed onto the male screw 31b of the shaft member 31, and is rotatable around the lower portion of the shaft member 31. The bearing plate 33 is provided so as to be movable in the axial direction and pressed against the lower surface of the support member 2 by the nut 32, and the washer 34 interposed between the nut 32 and the receiving plate 33. The shaft member 31 is at least longer than the sum of the thicknesses of the nut 32, the washer 34, and the receiving plate 33 than the distance h (see FIG. 2) between the upper surface of the field receiver 13 and the lower surface of the ceiling panel 15. Yes.

天井パネル１５の貫通孔１５ａは、吊金具３の軸部材３１のフック３１ａを通すことが可能で支持材２（言い換えれば野縁受け１３）の長手方向に細長いスリット状をなし、図３及び図４に示すように、野縁受け１３の縁の真下に位置して開設されている。   The through-hole 15a of the ceiling panel 15 can pass through the hook 31a of the shaft member 31 of the hanging bracket 3 and has a slit shape elongated in the longitudinal direction of the support member 2 (in other words, the field receiver 13). As shown in FIG. 4, it is located just below the edge of the field edge receiver 13.

上記構成を備える天井の落下防止構造によれば、吊金具３は、支持材２を介して天井パネル１５を、吊りボルト１１によって躯体スラブ１００に吊支された野縁受け１３に懸吊するものであり、すなわち、野縁１４とその下面に取り付けられた天井パネル１５を、野縁受け１３と支持材２の間に挟み込んだ状態に設けることによって、野縁１４からの天井パネル１５の脱落あるいは野縁受け１３からの野縁１４の脱落による落下を防止するものである。したがって、地震によって天井１が大きく揺れた場合に、野縁１４及び天井パネル１５が落下するのを有効に防止し、安全性を高めることができる。   According to the ceiling fall prevention structure having the above-described configuration, the hanging bracket 3 suspends the ceiling panel 15 via the support member 2 from the field receiver 13 suspended on the frame slab 100 by the suspension bolt 11. That is, the ceiling panel 15 attached to the field edge 14 and its lower surface is sandwiched between the field edge receiver 13 and the support member 2 so that the ceiling panel 15 is removed from the field edge 14 or The fall of the field edge 14 from the field edge receiver 13 is prevented. Therefore, when the ceiling 1 is greatly shaken due to an earthquake, it is possible to effectively prevent the field edge 14 and the ceiling panel 15 from falling and to improve safety.

しかも支持材２は防護ネットのように天井パネル１５の下面を覆うものではないため、下側（室内空間Ｓ１）から見た外観を損なわないものであり、吊金具３は、溶接部などが存在しないため、安価に提供することができる。   Moreover, since the support material 2 does not cover the lower surface of the ceiling panel 15 like a protective net, it does not impair the appearance seen from the lower side (the interior space S1), and the hanging bracket 3 has a welded portion and the like. Therefore, it can be provided at low cost.

上記構成を備える天井の落下防止構造によって、既存の天井の耐震性を向上させるには、図３に示すように、天井パネル１５の下面に、支持材２を野縁受け１３と略平行に配置し、この支持材２に沿って、図４に示すように、細長いスリット状の貫通孔１５ａを天井パネル１５に開設する。なお好ましくは、支持材２は接着剤もしくは他の適切な手段によって天井パネル１５の下面に仮止めしておく。   In order to improve the earthquake resistance of the existing ceiling by the ceiling fall prevention structure having the above configuration, as shown in FIG. 3, the support material 2 is disposed substantially parallel to the field receiver 13 on the lower surface of the ceiling panel 15. Then, along the support material 2, as shown in FIG. 4, an elongated slit-like through hole 15 a is opened in the ceiling panel 15. Preferably, the support member 2 is temporarily fixed to the lower surface of the ceiling panel 15 by an adhesive or other appropriate means.

次に、野縁受け１３と支持材２の間に吊金具３を取り付ける。詳しくは、軸部材３１には予めナット３２、ワッシャ３４及び受け板３３を組み込んでおき、図４に示すように、軸部材３１の上部のフック３１ａを、天井パネル１５に開設されたスリット状の貫通孔１５ａを通して、天井裏空間Ｓ２内へ挿入し、野縁受け１３の高さ以上まで押し上げてから、軸部材３１を適当に回転させることによって、図２に示すようにフック３１ａを野縁受け１３に引っ掛ける。軸部材３１は、野縁受け１３の上面と天井パネル１５の下面との距離ｈよりもやや長いため、軸部材３１の雄螺子３１ｂは、天井パネル１５の貫通孔１５ａから下側へ突出した状態となる。   Next, the hanging metal fitting 3 is attached between the field edge receiver 13 and the support material 2. Specifically, a nut 32, a washer 34, and a backing plate 33 are incorporated in advance in the shaft member 31, and a hook 31a on the upper portion of the shaft member 31 is formed in a slit-like shape opened in the ceiling panel 15, as shown in FIG. The hook 31a is inserted into the ceiling space S2 through the through-hole 15a and pushed up to the height of the field edge receiver 13 or more, and then the shaft member 31 is appropriately rotated. As shown in FIG. Hook 13 Since the shaft member 31 is slightly longer than the distance h between the upper surface of the field receiver 13 and the lower surface of the ceiling panel 15, the male screw 31 b of the shaft member 31 protrudes downward from the through hole 15 a of the ceiling panel 15. It becomes.

そして、軸部材３１の雄螺子３１ｂに組み込まれた受け板３３を支持材３３の下側に位置するように適宜回転させ、この受け板３３をナット３２で支持材３３に締め付けることによって、吊金具３は、野縁１４とその下面に取り付けられた天井パネル１５を野縁受け１３に懸吊した状態、言い換えれば野縁受け１３と支持材２との間に挟み込んだ状態に取り付けられる。   The receiving plate 33 incorporated in the male screw 31 b of the shaft member 31 is appropriately rotated so as to be positioned below the support member 33, and the receiving plate 33 is fastened to the support member 33 with the nut 32, thereby hanging the metal fitting. 3 is attached in a state in which the field edge 14 and the ceiling panel 15 attached to the lower surface thereof are suspended from the field edge receiver 13, in other words, sandwiched between the field edge receiver 13 and the support member 2.

したがって、これらの作業はすべて天井１の下側、すなわち室内空間Ｓ１で行うことができるため、天井裏空間Ｓ２への天井内足場などの設置が不要であり、工期や費用を軽減することができる。また、ナット３２はダブルナットとすることによって、緩んだり脱落したりすることがなく、受け板３３をしっかりと支持することができる。   Accordingly, all these operations can be performed on the lower side of the ceiling 1, that is, in the indoor space S1, so that installation of a scaffold in the ceiling or the like in the ceiling back space S2 is unnecessary, and the construction period and cost can be reduced. . Further, the nut 32 is a double nut, so that the receiving plate 33 can be firmly supported without being loosened or dropped off.

本発明による天井の耐震構造は、既存天井の耐震補強工事において好適に実施することができる。   The seismic structure of the ceiling according to the present invention can be suitably implemented in the seismic reinforcement work for existing ceilings.

１ 天井（既存天井）
１３ 野縁受け
１４ 野縁
１５ 天井パネル
１５ａ 貫通孔
２ 支持材
３ 吊金具
３１ 軸部材
３１ａ フック
３１ｂ 雄螺子
３２ ナット
３３ 受け板
３４ ワッシャ
１００ 躯体スラブ 1 Ceiling (existing ceiling)
13 Field edge receiver 14 Field edge 15 Ceiling panel 15a Through hole 2 Support material 3 Suspension bracket 31 Shaft member 31a Hook 31b Male screw 32 Nut 33 Receiving plate 34 Washer 100 Housing slab

Claims (2)

下面に天井パネルが取り付けられる複数の野縁及びこの野縁の上に略直交して結合される複数の野縁受けと、この野縁受けを吊支する複数の吊ボルトとを備える天井において、天井パネルの下面に配置されて前記野縁受けと略平行な方向へ延びる支持材と、前記天井パネルに開設した貫通孔に挿通されると共に上部が前記野縁受けに掛止され下部が前記支持材の下面に当接される吊金具を備えることを特徴とする天井の落下防止構造。   In a ceiling provided with a plurality of field edges to which a ceiling panel is attached to the lower surface, a plurality of field edge receivers coupled substantially orthogonally on the field edges, and a plurality of suspension bolts for supporting the field edge receivers, A support member disposed on a lower surface of the ceiling panel and extending in a direction substantially parallel to the field edge receiver; and a through hole formed in the ceiling panel and an upper part hooked on the field edge receiver and a lower part supported by the bottom edge support. A ceiling fall prevention structure comprising a hanging metal fitting abutted against a lower surface of a material. 吊金具は、天井パネルに開設された貫通孔に挿通されて上端が野縁受けに掛止可能な屈曲形状のフックが形成され下部に雄螺子が形成された軸部材と、前記雄螺子に螺合されるナットと、前記軸部材の周りに回転可能かつ軸方向移動可能に設けられると共に前記ナットによって支持材に押し付けられる受け板からなるものであり、前記貫通孔が、前記フックを通すことが可能なスリット状をなすことを特徴とする請求項１に記載の天井の落下防止構造。   The hanging bracket is inserted into a through-hole formed in the ceiling panel, and a hook member having a bent shape whose upper end can be hooked on the edge receiver is formed, and a male screw is formed in the lower part, and the male screw is threaded. And a nut that is rotatably and axially movable around the shaft member and that is pressed against the support material by the nut, and the through hole allows the hook to pass therethrough. The ceiling drop prevention structure according to claim 1, wherein the ceiling fall prevention structure is formed.
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JP2017125367A (en) * 2016-01-15 2017-07-20 株式会社大林組 Ceiling material fall prevention structure
JP2018168665A (en) * 2017-03-30 2018-11-01 株式会社熊谷組 Basement attic structure, and basement construction method using the basement attic structure
JP2019218847A (en) * 2018-06-13 2019-12-26 株式会社オクジュー Ceiling board fall prevention device and ceiling structure

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JPH06193183A (en) * 1992-12-25 1994-07-12 Naka Ind Ltd System ceiling
JPH08232454A (en) * 1995-02-24 1996-09-10 Toto Ltd Structure for preventing a lid for inspection hole on ceiling of bathroom unit from dropping
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Publication number Priority date Publication date Assignee Title
JP2017125367A (en) * 2016-01-15 2017-07-20 株式会社大林組 Ceiling material fall prevention structure
JP2018168665A (en) * 2017-03-30 2018-11-01 株式会社熊谷組 Basement attic structure, and basement construction method using the basement attic structure
JP2019218847A (en) * 2018-06-13 2019-12-26 株式会社オクジュー Ceiling board fall prevention device and ceiling structure
JP7276834B2 (en) 2018-06-13 2023-05-18 株式会社オクジュー Ceiling plate fall prevention device and ceiling structure

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