JP3964044B2

JP3964044B2 - Inspection port panel structure

Info

Publication number: JP3964044B2
Application number: JP10231498A
Authority: JP
Inventors: 辰夫庄司; 秀靖細谷
Original assignee: Naka Corp
Current assignee: Naka Corp
Priority date: 1998-04-14
Filing date: 1998-04-14
Publication date: 2007-08-22
Anticipated expiration: 2018-04-14
Also published as: JPH11293840A

Description

【０００１】
【発明の属する技術分野】
本発明は、天井に設けられる点検口パネルの構造に関する。
【０００２】
【従来の技術】
互いに平行に配列される天井仕上材間に互いに同一の外形寸法を有する複数の天井パネルを設けることにより、天井を形成することは知られている。デザイン上、天井仕上材が表面に現れることが好ましくない場合には、これら複数の天井パネルを互いに近接して配置させ且つ該天井仕上材に懸垂支持させることにより、天井パネルが天井仕上材を覆い隠すようにする。また、剛性も高く、中に断熱材を収容することができることから、天井パネルとして箱形のものが用いられることがある。
【０００３】
このようにして形成された天井に点検口を設ける場合、点検口パネルはその表面が天井パネルと同一の外形寸法を有することが外観上好ましい。その一方で、与えられた天井パネル一枚の大きさでは不十分な場合には、より大きな開口部を有する点検口とすることが望まれる。
【０００４】
また、点検口は、天井裏および室内の設備配置などの条件により、最適な位置を選択して設けることが便利である。したがってまた、これらの条件の変化により、点検口の設置位置を容易に変更できるとさらに都合がよい。
【０００５】
操作上の面からみれば、点検口パネルは、開閉が容易かつ確実で、しかも安全に行われることが必要である。
【０００６】
しかしながら、従来の点検口の構造は、このような要求を十分に満たすものではなかった。例えば実開昭４８−４１０２０号公報および特公平４−７４２０号公報に記載の点検口は、天井パネルを所望の大きさに切り取って開口部を形成し、該開口部内に点検口パネルを嵌め込み、該点検口パネルの一側部の両端付近を、天井パネルの開口部の内周縁部に枢着して、点検口パネルを開閉できるようにしたものであるが、点検口の設置位置は固定的であり、開口部を選択的に拡大することもできない。
【０００７】
実開昭５４−８４１２７号公報および特開平６−２４０８０８号に記載の点検口における点検口パネルは、一側部に横方向に延びる突起を有している。点検口パネルに隣接する天井パネルの対向側部には、該突起が挿入されるスリットが形成されている。点検口パネルを開けるとき、点検口パネルは、まず突起をスリットから引き出す方向へと動かされる。突起の先端に形成されたフック部がスリットに係止され、点検口パネルは次に該フック部を支点として下方に回動される。このような突起およびスリットの構成と点検口パネル開閉時における２段階操作とは、厚みのある箱形の点検口パネルを、近接して配置された箱形天井パネルに干渉することなく、下方に回動させることを可能にする。しかしながら、突起とスリットとが不正に引っ掛かってしまわないよう、スムーズな作業を確実に行うためには、複数の作業員が必要とされよう。さらに、点検口パネルに隣接するパネルには必ずスリットを形成しておく必要があるので、点検口の配置場所も限られた位置になってしまう。点検口をどこにでも配置できるようにするには、すべての天井パネルにスリットを開設しておかなければならず、過剰仕様となりコスト高を招く。
【０００８】
【発明が解決しようとする課題】
そこで、本発明が解決しようとする課題は、互いに平行に配列される天井仕上材間に互いに同一の外形寸法を有する複数の箱形天井パネルを互いに近接して配置させるようにした天井に用いられる点検口パネル構造において、所望の位置に設置することができ、また設置位置の変更も容易であり、より広い開口部を選択的に確保することが可能で、点検口パネルの開閉が容易かつ確実で安全に行うことができる点検口パネル構造を提供することにある。
【０００９】
【課題を解決するための手段】
上記課題を解決するため、本発明によれば、
互いに平行に配列される天井仕上材間に互いに同一の外形寸法を有する複数の箱形天井パネルを互いに近接して配置させるようにした天井に用いられる点検口パネル構造であって、
表面が前記天井パネルと同一の外形寸法を有する箱形の点検口パネルと、
該点検口パネルの一側部の裏面に設けられた回転機構にして、該回転機構の回転軸線を中心に前記点検口パネルが前記天井パネルと面一となる閉位置と前記一側部を上にして垂下した状態となる開位置との間を回転可能となるようにした回転機構と、
前記点検口パネルを前記閉位置に保持するための係止機構と、
を備えた点検口パネル構造において、
前記回転機構が、前記点検口パネルの前記一側部の裏面下部に取り付けられた軸受部材にして、該一側部に沿った孔を有する軸受部材と、内端が前記軸受部材の前記孔内に延びて該軸受部材に対して相対回転可能となるようにするとともに、外端がその上方で前記天井仕上材の上面に載置して支持されるようになされた軸部材と、を備えており、
前記係止機構が、前記天井仕上材に設けられた係止部と、前記点検口パネルの表面側から操作可能なように該点検口パネルに設けられ、前記係止部と解放可能に係合する可動部材と、を備えている、
点検口パネル構造が提供される。
【００１０】
前記軸部材は、前記内端から前記点検口パネルの前記一側部に対向する側部に向けて曲げられ、続いて上方に曲げられ、さらに前記内端と平行となるように前記点検口パネルの外方に向けて曲げられて前記外端を形成する形態とすることができる。
【００１１】
前記軸部材の前記内端を、前記軸受部材の前記孔内を軸方向に摺動可能とし、それによって前記軸部材が、前記外端が前記点検口パネルの長辺寸法の範囲内に納まるところの後退位置と、前記外端が前記天井仕上材の上面を越えて延び、点検口パネルを該天井仕上材の上面に載置し得るところの突出位置とを選択的にとることができるようにすることができる。
【００１２】
箱形の前記点検口パネルの前記一側部におけるパネル立ち上げ部分は、前記軸部材の前記内端より外方の部分に対向する箇所で回転に干渉しない高さに定めることができる。
【００１３】
前記係止部を、前記天井仕上材に設けられたナットを有するものとし、前記可動部材を、前記点検口パネルに回転可能に設けられて前記ナットと螺合可能なボルトを有するものとすることができる。
【００１４】
あるいはまた、前記係止部を、前記天井仕上材の上面とし、前記可動部材を、前記点検口パネルに回転可能に設けられて前記天井仕上材の前記上面と係合可能な舌状部材を有するものとすることができる。
【００１５】
【発明の実施の形態】
図１および図２に本発明の一実施例による点検口パネル構造を天井に設置した状態を示す。本発明の点検口パネル構造が設置される天井は、天井仕上材を覆うように互いに近接して配置された複数の箱形の天井パネル１により形成されている。個々の天井パネル１は、互いに同一の外形寸法を有しており、天井仕上材２に懸垂支持されている。天井パネル１は、互いに平行に配列される天井仕上材２間に複数枚配置されている。天井仕上材２は、天井スラブ（図示せず）から垂下される吊りボルト３に支持され且つ互いに平行に延びている天井下地材４の下方に取り付けられている。天井下地材４は、天井仕上材２と直交するように延び、天井仕上材２とともに格子状の天井材を構成している。天井仕上材２は、その横断面形状から、Ｊバーとも呼ばれる長尺材であって（勿論ＴバーとかＩバーの場合もある。）前述のように天井下地材に支持せしめられている。天井パネル１には、照明器具、空調用の空気吹き出し口、スピーカー等の設備を取り付けるための開口を有する設備パネル（図示せず）が含まれる。
【００１６】
点検口パネル５は、その表面が天井パネル１と同一の外形寸法を有する箱形のパネルである。箱形を形成する４辺の立ち上げ部分は、点検口パネルの剛性を高めることと、箱形内部に断熱材や防音材を納めることに役立つ。したがって、寸法上は、天井パネル１が設けられるいずれの位置にも点検口パネル５を設置することが可能である。また、２枚の点検口パネル５を互いに隣接させて対向配置することも可能である。点検口パネル５の一側部（図２で右側部）の裏面には回転機構６が設けられ、点検口パネル５が開き戸形式の開閉動作を行うことを可能にしている。図２に示すように、点検口パネル５は、閉位置にて、天井パネル１と面一となり、開位置にて、回転機構６を設けた一側部を上にして垂下した状態となる。
【００１７】
点検口パネル５は、係止機構７の作用により、閉位置に保持されることができる。係止機構７は、後述するように、天井仕上材２に設けられた係止部と、点検口パネル５の表面側から操作可能なように該点検口パネル５に設けられて上記係止部と解放可能に係合する可動部材とを備えている。
【００１８】
図３に示すように、回転機構６は、点検口パネル５の一側部の両端にそれぞれ設けられている。それぞれの回転機構６は、箱形の点検口パネル５の一側部の裏面下部に取り付けられた軸受部材８と、軸部材９とを備えている。軸受部材８は、点検口パネル５の上記一側部に沿って延びる孔１０を有しており、軸部材９の内端１１は該孔１０内に延びている。軸部材９の内端１１と軸受部材８の孔１０とは、相対回転可能な嵌合状態となっている。このようにして軸部材９の内端１１は、箱形の点検口パネル５の一側部の下部に、回転機構６の回転軸線を形成している。
【００１９】
図４に示すように、軸部材９は、棒状部材を互いに異なる３つの方向に９０度ずつ曲げた形状をしている。すなわち、下方に位置付けられた内端１１から、まず点検口パネル５の上記一側部に対向する側部に向けて９０度曲げられ、続いて上方に９０度曲げられ、さらに内端１１と平行となるように点検口パネル５の外方に向けて９０度曲げられて、外端１２が形成されている。このようにして軸部材９の外端１２は、天井仕上材２の上面に載置して支持させるために上方に位置づけられている。
【００２０】
軸部材９を軸受部材８に組み付ける際には、図５に示すように、軸部材９の内端１１を軸受部材８の孔１０に通した後、孔１０から突出した内端１１の端面に形成したネジ穴１３に止めネジ１４を螺合させる。止めネジ１４の頭部の径は孔１０の径よりも大きいので、止めネジ１４は、軸部材９の抜け止めとなる。一方、軸部材９の内端１１は、軸受部材８よりも長く形成されているので、止めネジ１４の頭部が軸受部材８の端面に当接している位置から軸部材９を点検口パネル５の内方へ向けて軸方向に摺動させることが可能である。この軸部材９の軸方向摺動により、軸部材９の外端１２を点検口パネル５の長辺寸法の範囲内に引き込めることができるので、後述するように、点検口パネル構造を天井の開口部内に設置する際に点検口パネル５を真下から開口部内へと嵌め込むことができる。
【００２１】
図３および図６から理解できるように、回転機構６が設けられた点検口パネル５の一側部の両端では、パネル立ち上げ部分１５が、軸部材９の内端１１より外方の部分に対向する箇所で高さが低くなっている。また、前述したように、軸部材９は内端１１から点検口パネル５の上記一側部に対向する側部に向けて９０度曲げられている。このように、パネル立ち上げ部分１５の高さを低くしたり、軸部材９を内方へ逃がしたりすることにより、箱形の点検口パネル５が軸部材９により形成された回転軸線のまわりを回転して図２に示すような十分に開いた開位置をとるときに、パネル立ち上げ部分１５と軸部材９とが互いに干渉しあわないようにすることができる。この立ち上げ部分の高さが回転を干渉しない程度に低いときは、この設定は不必要である。
【００２２】
図７に、軸部材９の外端１２を天井仕上材２に固定支持させる態様の一例を示す。この例の場合、天井仕上材２はアルミニウム材で作られている。（ａ）に示すように、外端１２にはＨ形をした軸端部支持部材１６が予め溶接され、軸部材９の天井仕上材側端部が形成される。該天井仕上側端部は、（ｂ）に示すように、天井仕上材２の上面に形成された溝１７内に挿通したボルト１８とナット１９とによって、天井仕上材２に固定支持される。ボルト１８を天井仕上材２の溝１７内に挿通させるときには、図８に示すように、ボルト１８の下端の横方向に延びる突起２０の長手方向を溝１７の上方狭幅開口２１の長手方向に整合させ、突起２０を溝１７内に挿入した後、ボルト１８を９０度回転させて突起２０が溝１７内から上方へと抜けないようにする。
【００２３】
図９には、天井パネル１に四方を囲まれた開口部内に点検口パネル５を設置する際の手法が示される。端部支持部材１６を外端１２に溶接された軸部材９は、点検口パネル５が設置される前の段階では、（ａ）に示すように外端１２が完全に点検口パネル５の領域内に納まるところの後退位置にある。かかる位置付けは、前述したように軸部材９を軸受部材８に対して軸方向内方に摺動させることにより可能となる。このように点検口パネル５の外周から突出した部材が無い状態にすることにより、回転機構６を備えた点検口パネル５を真下から持ち上げて開口部内へと嵌め込むことができる。その後、軸部材９を軸受部材８に対して軸方向外方に摺動させて突出位置とさせ、（ｂ）に示すように、軸部材９の外端１２を点検口パネル５の領域を越えて外方に延ばし、外端１２に取り付けられた軸端部支持部材１６を図７の手法で天井仕上材２に固定支持させる。
【００２４】
図１０および図１１に係止機構７の一例が示される。この例では、ビスによって天井仕上材２に固定されたパネル支持部材２２を介して天井仕上材２に取り付けられたナット２３が天井仕上材側の係止部となり、点検口パネル５に固定された設備プレート２４を介して点検口パネル５に回転可能に取り付けられたボルト２５が点検口パネル側の可動部材となる。ボルト２５には、抜け防止のための止め輪２６が嵌められている。ボルト２５の頭部２７は、点検口パネル５に形成された開口２８を通して外部から操作可能とされている。点検口パネル５を閉じてボルト２５を回転させ、対応する位置にあるナット２３に螺合させることにより、点検口パネル５を閉位置に保持させることができる。パネル支持部材２２は、点検口パネル５が隣接する天井パネル１と面一となる閉位置よりもさらに上方に移動することのないよう抑止する浮き上がり防止手段も兼ねている。点検口パネル５を開くには、ボルト２５を緩めてナット２３から外せばよい。そうすることにより、点検口パネル５は、軸部材９の内端１１により形成される回転軸線の回りを重力によって回転し、軸部材９に支持されるようにして下方に垂下する。
【００２５】
図１（ａ）に示すように、係止部としてのナット２３および可動部材としてのボルト２５を有する係止機構７は、回転機構６が設けられる点検口パネル５の一側部に対向する側部の両端付近に一対設けられる。
【００２６】
閉位置にある点検口パネル５は、回転機構６および係止機構７を介して天井仕上材２によって支持されることになる。
【００２７】
図１２には、点検口パネル５が回転するときの、回転機構６が設けられた一側部の位置関係が示されている。図中、ボルト２９およびナット３０は、軸受部材８を点検口パネル５の立ち上げ部分１５に固定するための手段である。前述したように、軸部材９の内端１１によって形成される回転軸線Ｐは箱形の点検口パネル５の一側部の下部に位置付けられているので、点検口パネル５と天井パネル１とが互いにある程度近接して配置されたとしても、点検口パネル５が回転するときに一側部の隅縁３１が隣の天井パネル１の対向する立ち上げ部分３２に干渉することを避けることができる。また、図１２中、Ｈは点検口パネル５の立ち上げ部分１５のうち図６で説明したように高さが低減された部分の高さを示すが、このように軸部材９を上方へ曲げる箇所で点検口パネル５の立ち上げ部分１５の高さを低くし、しかも軸部材９をいったん点検口パネル５の内方へと曲げて逃がすことにより、点検口パネル５を９０度以上の角度で開いても、立ち上げ部分１５と軸部材９とが互いに干渉しないようにすることができる。
【００２８】
図１３および図１４は、本発明による点検口パネル構造の第２の実施例を示す。図１ないし図１２に示した第１の実施例と異なる点は、回転機構６の軸部材９の天井仕上材側端部を天井仕上材に取り付ける手法、および、係止機構７の構成である。
【００２９】
第２実施例における軸部材９の内端１２には、図１５（ａ）に示すように、断面Ｌ字形の軸端部支持部材１６’が予め溶接され、軸部材９の天井仕上材側端部が形成される。該天井側端部は、軸端部支持部材１６’に形成された孔３３とそれに対応してスチール製の天井仕上材２’に形成された孔とを通して延びるビス３４によって、天井仕上材２’に固定支持される。
【００３０】
図１６ないし図１８は、第２実施例における係止機構７の構成を示す。第２実施例では、天井仕上材２’そのものの上面が天井仕上材側の係止部となり、点検口パネル５に固定された設備プレート３５を介して点検口パネル５に回転可能に取り付けられたパネルロック部材３６およびクランク状の舌状部材３７が点検口パネル側の可動部材となる。図１７に示すように、パネルロック部材３６の上端にはナット３８によって舌状部材３７が固着されており、パネルロック部材３６の下端には拡大端部３９が形成されている。
【００３１】
パネルロック部材３６の形態は図１８に示されている。不完全ネジ部４０の上方は全長にわたってネジが切られている。パネルロック部材３６は、設備プレート３５に形成された孔内を回転可能な遊嵌状態で挿通されており、両側を切り欠いた状態の上端部４１（切り欠いていない部分にはネジが切られている）は、舌状部材３７の内端に形成されたスロット４２を通ってナット３８と螺合し、該ナット３８との間に舌状部材３７の内端を挟持する。
【００３２】
パネルロック部材３６の拡大端部３９は、設備プレート３５の下方に位置付けられる点検口パネル５に形成された開口（図示せず）を通して外部から操作可能とされている。拡大端部３９を手または適当な器具で回すことにより、舌状部材３７を図１６に示すような天井仕上材２’上面と係合する係合位置と、係合解除位置との間で回動させることができる。このような回動を所定の約９０度の範囲に限定するため、設備プレート３５の上面には切り起こしによるストッパ４３が形成されている。また、舌状部材３７の外端中央部には、舌状部材３７を天井仕上材２’との係合から解放しようとする動きに抵抗する働きをする下方変形部４４が形成されている。
【００３３】
第２実施例における係止機構７もまた、図１３（ａ）に示すように、回転機構６が設けられる点検口パネル５の一側部に対向する側部の両端付近に一対設けられる。
【００３４】
図１６および図１７における係止機構７は係止状態にある。したがって、点検口パネル５は閉位置にあり、可動部材の一部である舌状部材３７は係止部である天井仕上材２’の上面に係合している。この状態の点検口パネル５は、回転機構６および係止機構７を介して天井仕上材２’によって支持されることになる。したがって、舌状部材３７は点検口パネルの部分荷重の力をもって天井仕上材２’上に押し付けられていることになるので、前述した下方変形部４４が形成されていることも併せて考慮すると、舌状部材３７を天井仕上材２’との係合から解放するには意図的に前記部分荷重を越えた大きな力を作用させることが必要となる。したがって、係止機構７が不用意に解除状態となることはない。また、閉位置における点検口パネル５の長辺立ち上げ部分は、天井仕上材２’に設置された浮き上がり防止手段と当接し、当該点検口パネルが隣接する天井パネルと面一になる閉位置よりもさらに上方に回転しようとしても、また天井面に風圧がかかったり、地震による上下動が加わって浮き上がろうとしても、それらは確実に抑止される。
【００３５】
係止機構７を係止解除状態にして点検口パネル５を開くには、パネルロック部材３６の拡大端部３９を下から見て反時計方向（１３図（ａ）の右側の係止機構では時計方向）に約９０度回転させ、舌状部材３７を天井仕上材２’の上面との係合から外す。このとき舌状部材３７は、回転するにつれて下方変形部４４が天井仕上材２の縁を乗り越えてその変形分だけ上向きに弾性変形し、さらに回転が進められ、やがて天井仕上材２に載置されている状態から解放される。両側の係止機構７とも係止解除状態にすることにより、点検口パネル５は、軸部材９の内端１１により形成される回転軸線の回りを重力によって回転し、軸部材９に支持されるようにして下方に垂下する。
【００３６】
本発明の２つの実施例について個別に説明してきたが、各実施例の構成を組み合わせることも可能である。例えば、軸部材９の外端１２を天井仕上材２に固定するのに図７の手法を採用し、係止機構７には図１６ないし図１８の構成を採用するようにしてもよい。また、軸部材９の外端１２を図１５の手法で天井仕上材２’に固定し、係止機構７に図１０および図１１の構成を採用してもよい。さらに、公知の係止機構を採用することもできる。
【００３７】
【発明の効果】
本発明の点検口パネル構造によれば、天井パネルと同一の外形寸法を有する点検口パネルの回転支持および閉位置における係止の双方が、隣接天井パネルに依存することなく、天井仕上材に対して行われるので、天井パネルが配置可能な場所であれば所望の任意の位置に設置することができる。
【００３８】
また、設置位置を変更したければ、変更希望位置の天井パネルと本発明による点検口パネル構造とを交換すればよい。
【００３９】
本発明による点検口パネル構造を２つ用意し、点検口パネルが観音開きとなるように並設させれば、開口部を２倍の大きさにすることができる。
【００４０】
点検口パネルを開くには、係止機構の可動部材を操作して係止部との係合を解除することにより、点検口パネルを下方に回転させればよい。軸受部材とその孔内に挿入される軸部材との間の回転可能な結合は確実で安心感があり、安全性が高い。
【図面の簡単な説明】
【図１】（ａ）は本発明による点検口パネル構造の一実施例を天井に設置した状態を天井裏側から見た平面図。（ｂ）は図１（ａ）におけるＡ−Ａ断面図。
【図２】図１（ａ）におけるＢ−Ｂ断面図。
【図３】本発明の一実施例における点検口パネルおよび回転機構を示す斜示図。
【図４】本発明の一実施例における回転機構の軸部材の斜示図。
【図５】本発明の一実施例における回転機構の軸部材と軸受部材とを組み立てる状況を示す斜示図。
【図６】本発明の一実施例における点検口パネルの隅部形状と回転機構の軸部材との関係を示す断片斜示図。
【図７】（ａ）は、本発明の一実施例における回転機構の軸部材の天井仕上材側端部の形態を示す断片斜示図。（ｂ）は該端部を天井仕上材に取り付けた状態を示す断片斜示図。
【図８】図７の実施例において軸部材の端部を天井仕上材に取り付ける際に用いる固定ボルトの使用方法を示すための断片斜示図。
【図９】本発明の一実施例における点検口パネル構造を天井に設置する際に回転機構の軸部材の端部を天井仕上材に取り付ける手順を示す断面図であり、（ａ）は取り付け前の状態、（ｂ）は図７に示す手法で取り付けた後の状態を示す。
【図１０】本発明の一実施例における係止機構の係止部と可動部材とを係止解除状態で示す断片斜示図。
【図１１】図１０における係止機構の係止部と可動部材とを係止状態で示す断片断面図。
【図１２】本発明の一実施例における点検口パネルが回転する際の回転機構側の動きを示す断片断面図。
【図１３】（ａ）は本発明による点検口パネル構造の別の実施例を天井に設置した状態を天井裏側から見た平面図。（ｂ）は図１（ａ）におけるＡ−Ａ断面図。
【図１４】図１３（ａ）におけるＢ−Ｂ断面図。
【図１５】（ａ）は、図１３の実施例における回転機構の軸部材の天井仕上材側端部の形態を示す断片斜示図。（ｂ）は該端部を天井仕上材に取り付けた状態を示す断片斜示図。
【図１６】図１３の実施例における係止機構の係止部と可動部材とを係止状態で示す断片斜示図。
【図１７】図１６に示す係止機構の可動部材のパネルロックと係止部受けとを示す図であり、係止部受けは上部を省略してある。（ａ）は断片正面図、（ｂ）は断片側面図。
【図１８】図１６および図１７に示す係止機構の可動部材のパネルロックと係止部受けとを分解して示す斜示図。
【符号の説明】
１天井パネル、２天井仕上材、２’ 天井仕上材、３吊りボルト、４天井下地材、５点検口パネル、６回転機構、７係止機構、８軸受部材、９軸部材、１０軸受部材の孔、１１軸部材の内端、１２軸部材の外端、１３軸部材の内端のネジ穴、１４止めネジ、１５点検口パネルの立ち上げ部分、１６軸端部支持部材、１６’ 軸端部支持部材、１７天井仕上材上面の溝、１８ボルト、１９ナット、２０突起、２１天井仕上材上面の溝の上方狭幅開口、２２パネル支持部材、２３ナット、２４設備プレート、２５ボルト、２６止め輪、２７ボルトの頭部、２８開口、２９ボルト、３０ナット、３１隅縁、３２天井パネルの立ち上げ部分、３３孔、３４ビス、３５設備プレート、３６パネルロック部材、３７舌状部材、３８ナット、３９パネルロック部材の拡大端部、４０不完全ネジ部、４１パネルロック部材の上端部、４２スロット、４３ストッパ、４４下方変形部。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure of an inspection port panel provided on a ceiling.
[0002]
[Prior art]
It is known to form a ceiling by providing a plurality of ceiling panels having the same external dimensions between ceiling finishing materials arranged in parallel to each other. If it is not desirable for the ceiling finishing material to appear on the surface due to the design, the ceiling panel covers the ceiling finishing material by arranging the plurality of ceiling panels close to each other and supporting the ceiling finishing material in a suspended manner. Try to hide. Moreover, since the rigidity is high and a heat insulating material can be accommodated therein, a box-shaped ceiling panel may be used.
[0003]
When the inspection port is provided in the ceiling thus formed, the surface of the inspection port panel preferably has the same external dimensions as the ceiling panel. On the other hand, when the size of a given ceiling panel is insufficient, it is desired to provide an inspection port having a larger opening.
[0004]
In addition, it is convenient to select and provide the inspection port according to conditions such as the back of the ceiling and the arrangement of equipment in the room. Therefore, it is more convenient if the installation position of the inspection port can be easily changed by changing these conditions.
[0005]
From the viewpoint of operation, the inspection port panel needs to be opened and closed easily, reliably and safely.
[0006]
However, the structure of the conventional inspection port does not sufficiently satisfy such a requirement. For example, in the inspection port described in Japanese Utility Model Publication No. 48-41020 and Japanese Patent Publication No. 4-7420, the ceiling panel is cut to a desired size to form an opening, and the inspection port panel is fitted into the opening. The inspection port panel can be opened and closed by pivoting the vicinity of one end of one side of the inspection port panel to the inner peripheral edge of the opening of the ceiling panel, but the installation position of the inspection port is fixed. And the opening cannot be selectively enlarged.
[0007]
The inspection port panel in the inspection port described in Japanese Utility Model Laid-Open No. 54-84127 and Japanese Patent Application Laid-Open No. 6-240808 has a protrusion extending laterally on one side. A slit into which the protrusion is inserted is formed on the opposite side of the ceiling panel adjacent to the inspection port panel. When opening the inspection port panel, the inspection port panel is first moved in a direction to pull out the protrusion from the slit. The hook portion formed at the tip of the protrusion is locked by the slit, and the inspection port panel is then rotated downward with the hook portion as a fulcrum. The structure of such protrusions and slits and the two-step operation when opening and closing the inspection port panel are as follows: a thick box-shaped inspection port panel can be moved downward without interfering with a box-shaped ceiling panel arranged in proximity. Allows to rotate. However, a plurality of workers will be required to ensure a smooth operation so that the protrusion and the slit are not caught illegally. Furthermore, since it is necessary to form a slit in the panel adjacent to the inspection port panel, the location of the inspection port is limited. In order to be able to place the inspection port anywhere, it is necessary to open slits in all the ceiling panels, resulting in excessive specifications and high costs.
[0008]
[Problems to be solved by the invention]
Therefore, the problem to be solved by the present invention is used for a ceiling in which a plurality of box-shaped ceiling panels having the same external dimensions are arranged close to each other between ceiling finishing materials arranged in parallel to each other. In the inspection port panel structure, it can be installed at a desired position, and the installation position can be easily changed, and a wider opening can be selectively secured, so that the inspection port panel can be opened and closed easily and reliably. It is in providing the inspection port panel structure which can be performed safely by.
[0009]
[Means for Solving the Problems]
In order to solve the above problems, according to the present invention,
An inspection port panel structure used for a ceiling in which a plurality of box-shaped ceiling panels having the same external dimensions are arranged between ceiling finishing materials arranged in parallel to each other,
A box-shaped inspection port panel having the same outer dimensions as the ceiling panel;
A rotating mechanism provided on the back surface of one side of the inspection port panel is provided with a closed position where the inspection port panel is flush with the ceiling panel and the one side above the rotation axis of the rotation mechanism. And a rotation mechanism that can rotate between the open position where it hangs down,
A locking mechanism for holding the inspection port panel in the closed position;
In the inspection port panel structure with
The rotating mechanism is a bearing member attached to a lower part of the back surface of the one side portion of the inspection port panel, and a bearing member having a hole along the one side portion, and an inner end in the hole of the bearing member. A shaft member that extends relative to the bearing member so that it can rotate relative to the bearing member, and has an outer end placed on and supported by the upper surface of the ceiling finishing material. And
The locking mechanism is provided in the inspection port panel so as to be operable from the locking portion provided in the ceiling finishing material and the surface side of the inspection port panel, and is releasably engaged with the locking portion. A movable member,
An inspection port panel structure is provided.
[0010]
The shaft member is bent from the inner end toward a side portion facing the one side portion of the inspection port panel, subsequently bent upward, and further parallel to the inner end. The outer end can be formed by being bent outward.
[0011]
The inner end of the shaft member is slidable in the axial direction in the hole of the bearing member, whereby the shaft member is placed within the range of the long side dimension of the inspection port panel. And a protruding position where the outer end extends beyond the upper surface of the ceiling finishing material and the inspection port panel can be placed on the upper surface of the ceiling finishing material. can do.
[0012]
The panel rising portion in the one side portion of the box-shaped inspection port panel can be set to a height that does not interfere with rotation at a location facing the outer portion from the inner end of the shaft member.
[0013]
The locking portion has a nut provided on the ceiling finishing material, and the movable member has a bolt that is rotatably provided on the inspection port panel and can be screwed onto the nut. Can do.
[0014]
Alternatively, the locking portion may be an upper surface of the ceiling finishing material, and the movable member may be provided on the inspection port panel so as to be rotatable and engage with the upper surface of the ceiling finishing material. Can be.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
1 and 2 show a state in which an inspection port panel structure according to one embodiment of the present invention is installed on a ceiling. The ceiling on which the inspection port panel structure of the present invention is installed is formed by a plurality of box-shaped ceiling panels 1 arranged close to each other so as to cover the ceiling finishing material. The individual ceiling panels 1 have the same external dimensions, and are suspended and supported by the ceiling finishing material 2. A plurality of ceiling panels 1 are arranged between ceiling finishing materials 2 arranged in parallel to each other. The ceiling finishing material 2 is attached to a lower portion of a ceiling base material 4 supported by suspension bolts 3 suspended from a ceiling slab (not shown) and extending in parallel with each other. The ceiling base material 4 extends so as to be orthogonal to the ceiling finishing material 2 and constitutes a lattice-like ceiling material together with the ceiling finishing material 2. The ceiling finishing material 2 is a long material called J-bar because of its cross-sectional shape (of course, it may be a T-bar or I-bar) and is supported on the ceiling base material as described above. The ceiling panel 1 includes an equipment panel (not shown) having an opening for attaching equipment such as a lighting fixture, an air outlet for air conditioning, and a speaker.
[0016]
The inspection port panel 5 is a box-shaped panel whose surface has the same outer dimensions as the ceiling panel 1. The four-side raised portions that form the box shape are useful for increasing the rigidity of the inspection port panel and for placing the heat insulating material and soundproofing material inside the box shape. Therefore, the inspection port panel 5 can be installed at any position where the ceiling panel 1 is provided in terms of dimensions. It is also possible to arrange the two inspection port panels 5 adjacent to each other so as to face each other. A rotation mechanism 6 is provided on the back surface of one side portion (the right side portion in FIG. 2) of the inspection port panel 5 so that the inspection port panel 5 can perform an opening / closing operation in the form of a hinged door. As shown in FIG. 2, the inspection port panel 5 is flush with the ceiling panel 1 at the closed position, and is suspended from the one side provided with the rotation mechanism 6 at the open position.
[0017]
The inspection port panel 5 can be held in the closed position by the action of the locking mechanism 7. As will be described later, the locking mechanism 7 includes a locking portion provided on the ceiling finishing material 2 and the locking portion provided on the inspection port panel 5 so as to be operable from the surface side of the inspection port panel 5. And a movable member that is releasably engaged.
[0018]
As shown in FIG. 3, the rotation mechanisms 6 are provided at both ends of one side portion of the inspection port panel 5. Each rotating mechanism 6 includes a bearing member 8 and a shaft member 9 attached to the lower part of the back surface of one side portion of the box-shaped inspection port panel 5. The bearing member 8 has a hole 10 extending along the one side portion of the inspection port panel 5, and the inner end 11 of the shaft member 9 extends into the hole 10. The inner end 11 of the shaft member 9 and the hole 10 of the bearing member 8 are in a fitting state that allows relative rotation. In this way, the inner end 11 of the shaft member 9 forms the rotation axis of the rotation mechanism 6 at the lower part of one side of the box-shaped inspection port panel 5.
[0019]
As shown in FIG. 4, the shaft member 9 has a shape in which a rod-like member is bent 90 degrees in three different directions. That is, the inner end 11 positioned below is first bent 90 degrees toward the side facing the one side of the inspection port panel 5, and then bent upward 90 degrees, and further parallel to the inner end 11. The outer end 12 is formed by being bent 90 degrees toward the outside of the inspection port panel 5 so as to become. In this way, the outer end 12 of the shaft member 9 is positioned upward to be placed on and supported by the upper surface of the ceiling finishing material 2.
[0020]
When the shaft member 9 is assembled to the bearing member 8, as shown in FIG. 5, the inner end 11 of the shaft member 9 is passed through the hole 10 of the bearing member 8 and then the end surface of the inner end 11 protruding from the hole 10. A set screw 14 is screwed into the formed screw hole 13. Since the diameter of the head of the set screw 14 is larger than the diameter of the hole 10, the set screw 14 prevents the shaft member 9 from coming off. On the other hand, since the inner end 11 of the shaft member 9 is formed longer than the bearing member 8, the shaft member 9 is moved from the position where the head of the set screw 14 is in contact with the end surface of the bearing member 8 to the inspection port panel 5. It is possible to make it slide in the axial direction toward the inside. As the shaft member 9 slides in the axial direction, the outer end 12 of the shaft member 9 can be retracted within the range of the long side dimension of the inspection port panel 5, so that the inspection port panel structure is formed on the ceiling as described later. When installing in the opening, the inspection port panel 5 can be fitted into the opening from directly below.
[0021]
As can be understood from FIG. 3 and FIG. 6, at both ends of one side portion of the inspection port panel 5 provided with the rotation mechanism 6, the panel rising portion 15 is located on the outer side from the inner end 11 of the shaft member 9. The height is low at the opposite location. Further, as described above, the shaft member 9 is bent 90 degrees from the inner end 11 toward the side portion of the inspection port panel 5 that faces the one side portion. In this way, by reducing the height of the panel rising portion 15 or allowing the shaft member 9 to escape inward, the box-shaped inspection port panel 5 moves around the rotation axis formed by the shaft member 9. It is possible to prevent the panel rising portion 15 and the shaft member 9 from interfering with each other when rotating and taking the fully open position as shown in FIG. This setting is unnecessary when the height of the raised portion is low enough not to interfere with rotation.
[0022]
FIG. 7 shows an example of a mode in which the outer end 12 of the shaft member 9 is fixedly supported on the ceiling finishing material 2. In this example, the ceiling finishing material 2 is made of an aluminum material. As shown in (a), an H-shaped shaft end support member 16 is welded to the outer end 12 in advance, and the ceiling finishing material side end of the shaft member 9 is formed. The ceiling finish upper end is fixedly supported on the ceiling finish 2 by bolts 18 and nuts 19 inserted into grooves 17 formed on the top surface of the ceiling finish 2 as shown in FIG. When the bolt 18 is inserted into the groove 17 of the ceiling finishing material 2, the longitudinal direction of the protrusion 20 extending in the lateral direction at the lower end of the bolt 18 is set to the longitudinal direction of the narrow upper opening 21 of the groove 17 as shown in FIG. After the alignment and the protrusion 20 is inserted into the groove 17, the bolt 18 is rotated 90 degrees so that the protrusion 20 does not come out upward from the groove 17.
[0023]
FIG. 9 shows a method for installing the inspection port panel 5 in the opening surrounded by the ceiling panel 1 on all sides. In the stage before the inspection port panel 5 is installed, the shaft member 9 with the end support member 16 welded to the outer end 12 has the outer end 12 completely in the region of the inspection port panel 5 as shown in FIG. It is in the retracted position where it fits inside. Such positioning can be performed by sliding the shaft member 9 inward in the axial direction with respect to the bearing member 8 as described above. As described above, when there is no member protruding from the outer periphery of the inspection port panel 5, the inspection port panel 5 provided with the rotation mechanism 6 can be lifted from directly below and fitted into the opening. Thereafter, the shaft member 9 is slid outward in the axial direction with respect to the bearing member 8 to the protruding position, and the outer end 12 of the shaft member 9 exceeds the region of the inspection port panel 5 as shown in FIG. The shaft end support member 16 attached to the outer end 12 is fixedly supported on the ceiling finishing material 2 by the method shown in FIG.
[0024]
An example of the locking mechanism 7 is shown in FIGS. 10 and 11. In this example, a nut 23 attached to the ceiling finishing material 2 via a panel support member 22 fixed to the ceiling finishing material 2 with screws serves as a locking portion on the ceiling finishing material side, and is fixed to the inspection port panel 5. A bolt 25 rotatably attached to the inspection port panel 5 via the equipment plate 24 serves as a movable member on the inspection port panel side. A retaining ring 26 is attached to the bolt 25 to prevent it from coming off. The head 27 of the bolt 25 can be operated from the outside through an opening 28 formed in the inspection port panel 5. The inspection port panel 5 can be held in the closed position by closing the inspection port panel 5 and rotating the bolts 25 and screwing them into the nuts 23 at the corresponding positions. The panel support member 22 also serves as an anti-lifting means for preventing the inspection port panel 5 from moving further upward than the closed position where it is flush with the adjacent ceiling panel 1. In order to open the inspection port panel 5, the bolt 25 may be loosened and removed from the nut 23. By doing so, the inspection port panel 5 rotates around the rotation axis formed by the inner end 11 of the shaft member 9 by gravity and hangs downward so as to be supported by the shaft member 9.
[0025]
As shown in FIG. 1A, the locking mechanism 7 having a nut 23 as a locking portion and a bolt 25 as a movable member is a side facing one side of the inspection port panel 5 on which the rotation mechanism 6 is provided. A pair is provided near both ends of the part.
[0026]
The inspection port panel 5 in the closed position is supported by the ceiling finishing material 2 via the rotation mechanism 6 and the locking mechanism 7.
[0027]
FIG. 12 shows the positional relationship of one side portion where the rotation mechanism 6 is provided when the inspection port panel 5 rotates. In the drawing, a bolt 29 and a nut 30 are means for fixing the bearing member 8 to the rising portion 15 of the inspection port panel 5. As described above, the rotation axis P formed by the inner end 11 of the shaft member 9 is positioned at the lower part of one side of the box-shaped inspection port panel 5, so that the inspection port panel 5 and the ceiling panel 1 are connected to each other. Even if they are arranged close to each other to some extent, it is possible to prevent the corner edge 31 on one side from interfering with the opposing raised portion 32 of the adjacent ceiling panel 1 when the inspection port panel 5 rotates. In FIG. 12, H indicates the height of the portion of the rising portion 15 of the inspection port panel 5 whose height is reduced as described with reference to FIG. 6, and the shaft member 9 is bent upward in this way. The height of the rising portion 15 of the inspection port panel 5 is lowered at a location, and the shaft member 9 is once bent inward of the inspection port panel 5 so that the inspection port panel 5 is at an angle of 90 degrees or more. Even if it opens, it is possible to prevent the rising portion 15 and the shaft member 9 from interfering with each other.
[0028]
13 and 14 show a second embodiment of the inspection port panel structure according to the present invention. The difference from the first embodiment shown in FIGS. 1 to 12 is a method of attaching the end of the shaft member 9 of the rotating mechanism 6 to the ceiling finishing material and the structure of the locking mechanism 7. .
[0029]
As shown in FIG. 15A, a shaft end support member 16 ′ having an L-shaped cross section is welded in advance to the inner end 12 of the shaft member 9 in the second embodiment. Part is formed. The ceiling side end portion is provided with a ceiling finish 2 ′ by a screw 34 extending through a hole 33 formed in the shaft end support member 16 ′ and a corresponding hole formed in the steel ceiling finish 2 ′. Fixedly supported.
[0030]
16 to 18 show the configuration of the locking mechanism 7 in the second embodiment. In the second embodiment, the top surface of the ceiling finishing material 2 ′ itself becomes a locking portion on the ceiling finishing material side, and is rotatably attached to the inspection port panel 5 via the equipment plate 35 fixed to the inspection port panel 5. The panel lock member 36 and the crank-like tongue 37 are movable members on the inspection port panel side. As shown in FIG. 17, a tongue-like member 37 is fixed to the upper end of the panel lock member 36 by a nut 38, and an enlarged end 39 is formed at the lower end of the panel lock member 36.
[0031]
The form of the panel lock member 36 is shown in FIG. The upper part of the incomplete screw part 40 is threaded over the entire length. The panel lock member 36 is inserted through a hole formed in the equipment plate 35 in a loosely fitting state, and the upper end portion 41 in a state in which both sides are cut out (screws are cut in portions not cut out). Is screwed into the nut 38 through a slot 42 formed at the inner end of the tongue-shaped member 37, and the inner end of the tongue-shaped member 37 is sandwiched between the nut 38.
[0032]
The enlarged end 39 of the panel lock member 36 can be operated from the outside through an opening (not shown) formed in the inspection port panel 5 positioned below the equipment plate 35. By rotating the enlarged end 39 with a hand or an appropriate tool, the tongue member 37 is rotated between the engagement position where the tongue-shaped member 37 is engaged with the upper surface of the ceiling finishing material 2 'as shown in FIG. Can be moved. In order to limit such rotation to a predetermined range of about 90 degrees, a stopper 43 is formed on the upper surface of the equipment plate 35 by cutting and raising. In addition, a lower deformation portion 44 is formed at the center of the outer end of the tongue-like member 37. The lower deformable portion 44 functions to resist the movement of the tongue-like member 37 to be released from the engagement with the ceiling finishing material 2 ′.
[0033]
As shown in FIG. 13A, a pair of locking mechanisms 7 in the second embodiment are also provided near both ends of the side portion facing one side portion of the inspection port panel 5 where the rotation mechanism 6 is provided.
[0034]
The locking mechanism 7 in FIGS. 16 and 17 is in a locked state. Therefore, the inspection port panel 5 is in the closed position, and the tongue-like member 37 that is a part of the movable member is engaged with the upper surface of the ceiling finishing material 2 ′ that is the locking portion. The inspection port panel 5 in this state is supported by the ceiling finishing material 2 ′ via the rotation mechanism 6 and the locking mechanism 7. Therefore, since the tongue-like member 37 is pressed onto the ceiling finishing material 2 ′ with the force of the partial load of the inspection port panel, considering that the lower deformation portion 44 described above is also formed, In order to release the tongue-shaped member 37 from the engagement with the ceiling finishing material 2 ', it is necessary to intentionally apply a large force exceeding the partial load. Therefore, the locking mechanism 7 is not inadvertently released. In addition, the long side rising portion of the inspection port panel 5 in the closed position is in contact with the lifting prevention means installed on the ceiling finishing material 2 ′, and the inspection port panel is in a closed position where it is flush with the adjacent ceiling panel. However, even if it tries to rotate further upwards, or if wind pressure is applied to the ceiling surface or if it moves up and down due to an up-and-down movement caused by an earthquake, they are surely restrained.
[0035]
In order to open the inspection port panel 5 with the locking mechanism 7 in the unlocked state, the enlarged end 39 of the panel lock member 36 is viewed counterclockwise (in the locking mechanism on the right side in FIG. 13 (a)). The tongue member 37 is disengaged from the upper surface of the ceiling finishing material 2 ′ by rotating about 90 degrees clockwise. At this time, as the tongue-shaped member 37 rotates, the lower deformation portion 44 gets over the edge of the ceiling finishing material 2 and elastically deforms upward by the amount of the deformation, and further rotates, and is eventually placed on the ceiling finishing material 2. It is released from the state that is. By bringing the locking mechanisms 7 on both sides into the unlocked state, the inspection port panel 5 rotates around the rotation axis formed by the inner end 11 of the shaft member 9 by gravity and is supported by the shaft member 9. In this way, it hangs down.
[0036]
Although the two embodiments of the present invention have been described individually, the configurations of the embodiments can be combined. For example, the method shown in FIG. 7 may be adopted to fix the outer end 12 of the shaft member 9 to the ceiling finishing material 2, and the configuration shown in FIGS. 16 to 18 may be adopted as the locking mechanism 7. Further, the outer end 12 of the shaft member 9 may be fixed to the ceiling finishing material 2 ′ by the method shown in FIG. 15, and the configuration shown in FIGS. 10 and 11 may be adopted as the locking mechanism 7. Furthermore, a known locking mechanism can also be employed.
[0037]
【The invention's effect】
According to the inspection port panel structure of the present invention, both the rotation support of the inspection port panel having the same external dimensions as the ceiling panel and the locking in the closed position are not dependent on the adjacent ceiling panel, and the ceiling finishing material is used. Therefore, it can be installed at any desired position as long as the ceiling panel can be arranged.
[0038]
If the installation position is to be changed, the ceiling panel at the desired change position and the inspection port panel structure according to the present invention may be exchanged.
[0039]
If two inspection port panel structures according to the present invention are prepared and are arranged side by side so that the inspection port panel has a double door opening, the opening can be made twice as large.
[0040]
In order to open the inspection port panel, the inspection port panel may be rotated downward by operating the movable member of the locking mechanism to release the engagement with the locking portion. The rotatable coupling between the bearing member and the shaft member inserted into the hole is reliable and secure, and the safety is high.
[Brief description of the drawings]
FIG. 1A is a plan view of an inspection port panel structure according to an embodiment of the present invention installed on a ceiling as viewed from the back of the ceiling. (B) is AA sectional drawing in Fig.1 (a).
FIG. 2 is a cross-sectional view taken along line BB in FIG.
FIG. 3 is a perspective view showing an inspection port panel and a rotation mechanism in an embodiment of the present invention.
FIG. 4 is a perspective view of a shaft member of a rotation mechanism in an embodiment of the present invention.
FIG. 5 is a perspective view showing a state in which the shaft member and the bearing member of the rotating mechanism in the embodiment of the present invention are assembled.
FIG. 6 is a fragmentary oblique view showing the relationship between the corner shape of the inspection port panel and the shaft member of the rotation mechanism in one embodiment of the present invention.
FIG. 7A is a fragmentary oblique view showing the form of the end portion on the ceiling finishing material side of the shaft member of the rotation mechanism in one embodiment of the present invention. (B) is a fragmentary oblique view showing a state in which the end is attached to a ceiling finishing material.
8 is a fragmentary oblique view showing how to use the fixing bolt used when attaching the end portion of the shaft member to the ceiling finishing material in the embodiment of FIG. 7;
FIG. 9 is a cross-sectional view showing a procedure for attaching the end of the shaft member of the rotating mechanism to the ceiling finishing material when the inspection port panel structure according to one embodiment of the present invention is installed on the ceiling; FIG. 7B shows a state after mounting by the method shown in FIG.
FIG. 10 is a fragmentary oblique view showing the locking portion and the movable member of the locking mechanism in one embodiment of the present invention in the unlocked state.
11 is a fragmentary cross-sectional view showing the locking portion and the movable member of the locking mechanism in FIG. 10 in a locked state.
FIG. 12 is a fragmentary sectional view showing the movement of the rotation mechanism side when the inspection port panel rotates in one embodiment of the present invention.
FIG. 13A is a plan view of a state in which another embodiment of the inspection port panel structure according to the present invention is installed on a ceiling as viewed from the back side of the ceiling. (B) is AA sectional drawing in Fig.1 (a).
14 is a cross-sectional view taken along line BB in FIG.
15A is a fragmentary oblique view showing the form of the end portion on the ceiling finishing material side of the shaft member of the rotation mechanism in the embodiment of FIG. 13; FIG. (B) is a fragmentary oblique view showing a state in which the end is attached to a ceiling finishing material.
16 is a fragmentary oblique view showing the locking portion and the movable member of the locking mechanism in the embodiment of FIG. 13 in a locked state.
17 is a diagram showing a panel lock and a locking portion receiver of the movable member of the locking mechanism shown in FIG. 16, and the locking portion receiver is omitted from the upper part. (A) is a fragment front view, (b) is a fragment side view.
18 is an exploded perspective view showing the panel lock and the engaging portion receiver of the movable member of the engaging mechanism shown in FIGS. 16 and 17. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Ceiling panel, 2 Ceiling finishing material, 2 'Ceiling finishing material, 3 Suspension bolt, 4 Ceiling base material, 5 Inspection port panel, 6 Rotating mechanism, 7 Locking mechanism, 8 Bearing member, 9 axis member, 10 Bearing member Hole, 11 Inner end of shaft member, 12 Outer end of shaft member, 13 Screw hole of inner end of shaft member, 14 Set screw, 15 Rising part of inspection port panel, 16 Shaft end support member, 16 'Shaft end Part support member, 17 groove on the ceiling finishing material, 18 bolt, 19 nut, 20 protrusion, 21 narrow opening above the groove on the ceiling finishing material, 22 panel support member, 23 nut, 24 equipment plate, 25 bolt, 26 Retaining ring, 27 bolt head, 28 opening, 29 bolt, 30 nut, 31 corner edge, 32 ceiling panel rising part, 33 hole, 34 screw, 35 equipment plate, 36 panel lock member, 37 tongue-like member, 38 G, 39 Enlarged end portion of panel lock member, 40 Incomplete screw portion, 41 Upper end portion of panel lock member, 42 Slot, 43 Stopper, 44 Lower deformation portion.

Claims

An inspection port panel structure used for a ceiling in which a plurality of box-shaped ceiling panels having the same external dimensions are arranged between ceiling finishing materials arranged in parallel to each other,
A box-shaped inspection port panel whose surface has the same outer dimensions as the ceiling panel;
A rotating mechanism provided on the back surface of one side of the inspection port panel is provided with a closed position where the inspection port panel is flush with the ceiling panel and the one side above the rotation axis of the rotation mechanism. And a rotation mechanism that can rotate between the open position where it hangs down,
A locking mechanism for holding the inspection port panel in the closed position;
In the inspection port panel structure with
The rotating mechanism is a bearing member attached to a lower part of the back surface of the one side portion of the inspection port panel, and a bearing member having a hole along the one side portion, and an inner end in the hole of the bearing member. A shaft member that extends relative to the bearing member so that it can rotate relative to the bearing member, and has an outer end placed on and supported by the upper surface of the ceiling finishing material. And
The locking mechanism is provided in the inspection port panel so as to be operable from the locking portion provided in the ceiling finishing material and the surface side of the inspection port panel, and is releasably engaged with the locking portion. A movable member,
Inspection port panel structure.

In the inspection port panel structure according to claim 1,
The inspection port panel is bent so that the shaft member is bent from the inner end toward a side portion opposite to the one side portion of the inspection port panel, and is then bent upward and further parallel to the inner end. An inspection port panel structure characterized by being bent outwardly to form the outer end.

In the inspection port panel structure according to claim 1 or 2,
The inner end of the shaft member is slidable in the axial direction in the hole of the bearing member, so that the outer end of the shaft member is within the range of the long side dimension of the inspection port panel. However, the retracted position and the protruding position where the outer end extends beyond the upper surface of the ceiling finishing material and the inspection port panel can be placed on the upper surface of the ceiling finishing material can be selectively taken. Inspection port panel structure characterized by being made to.

In the inspection port panel structure according to any one of claims 1 to 3,
The panel rising portion on the one side of the box-shaped inspection port panel is set to a height that does not interfere with rotation at a location facing the outer portion from the inner end of the shaft member. Characteristic inspection panel structure.

In the inspection port panel structure according to any one of claims 1 to 4,
The locking portion has a nut provided on the ceiling finishing material, and the movable member has a bolt that is rotatably provided on the inspection port panel and can be screwed onto the nut. The inspection port panel structure characterized by that.

In the inspection port panel structure according to any one of claims 1 to 4,
The locking portion is an upper surface of the ceiling finishing material, and the movable member includes a tongue-like member that is rotatably provided on the inspection port panel and engageable with the upper surface of the ceiling finishing material. Inspection port panel structure characterized by that.