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JP2004003252A - Beam structure for ceiling panels - Google Patents

Beam structure for ceiling panels Download PDF

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Publication number
JP2004003252A
JP2004003252A JP2002236030A JP2002236030A JP2004003252A JP 2004003252 A JP2004003252 A JP 2004003252A JP 2002236030 A JP2002236030 A JP 2002236030A JP 2002236030 A JP2002236030 A JP 2002236030A JP 2004003252 A JP2004003252 A JP 2004003252A
Authority
JP
Japan
Prior art keywords
beam member
groove
sub
main beam
ceiling panel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2002236030A
Other languages
Japanese (ja)
Inventor
Kaoru Nobuhara
延原　薫
Hiroshi Yamazaki
山崎　宏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SAEKI KINZOKU KK
Original Assignee
SAEKI KINZOKU KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SAEKI KINZOKU KK filed Critical SAEKI KINZOKU KK
Priority to JP2002236030A priority Critical patent/JP2004003252A/en
Publication of JP2004003252A publication Critical patent/JP2004003252A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a beam structure for ceiling panels, which improves the workability thereof and suppresses the generation of chips, thereby improving the cleanliness in the construction field. <P>SOLUTION: The beam structure is formed of long main beam members 10 hung from a ceiling and arranged in parallel at intervals in a lateral direction, sub-beam members 20 each having both ends thereof connected to the adjacent main beam members 10, and connecting rods 30 each attached to the sub-beam member 20 to protrude outward from an edge of the sub-beam member 20, to thereby lock the connection between the main beam member 10 and the sub-beam member 20. The main beam member 10 has first recesses 13 and second recesses 15. The first recesses 13 are formed on both sides of the member 10 with respect to the arrangement direction of the member 10, and extend along a longitudinal direction of the same. The second recesses 15 are opened sideways for insertion of the connecting rods 30 thereinto. The sub-beam member 20 has engaging portions 26 formed on both edges thereof, for fitting into the first recesses 13 and engaging with the same, and third recesses 27 formed in both side surfaces along the longitudinal direction of the sub-beam member 20, for allowing the connecting rods 30 to be slidably attached thereto. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、半導体製造工場等で採用されるクリーンルームなどに用いられる天井パネルの縁部を支持するための天井パネル用梁構造に関する。
【０００２】
【従来の技術】
上述した天井パネル用梁構造として、図２５に示すものが知られている。この梁構造は、同一断面形状に形成された長尺の梁部材を、天井に上端が取付けらけれた吊り下げ部材を介して吊り下げ、各種ジョイントを用いて格子状に連結することで構成されている。
【０００３】
例えば、梁部材１００の途中の片側に別の梁部材１０１を突き合わせる場合には、別の梁部材１０１の内部に取付けられるジョイント金具１０２と外部の両者に掛け渡して取付けられるＴ型ジョイント１０３を用いてビス１０４止めされる。また、梁部材１０５の途中の両側に別の２つの梁部材１０１、１０６を突き合わせる場合には、ジョイント金具１０２とクロスジョイント１０７を用いてビス１０４止めされる。
【０００４】
【発明が解決しようとする課題】
したがって、従来の梁構造により、上述した各種ジョイント部分のそれぞれに多数のビスの使用が要求され、また、ビス止めする位置を合わせる作業も要求されるので、ビス止め作業に長時間を要し、作業性の改善が要望されている。また、クリーンルームに用いられる天井パネルの縁部を支持する場合には、ビス止めにより行われるため切り屑が無数発生し、その切り屑がクリーンルームの床面上に落下するだけでなく、梁部材およびジョイント部材等に付着したまま残るため、作業の終了後に掃除を行っても、半導体の製造中に、部屋隅に残った小さな切り屑が舞い上がることにより、或いは梁部材およびジョイント部材等に付着して残った切り屑が落下することにより、クリーンルームをクリーンな状態にすることが困難であった。
【０００５】
本発明は、このような従来技術の課題を解消するためになされたもので、作業性の改善を図ることができ、しかも切り屑の発生を抑制して清浄性を向上させることができる天井パネル用梁構造を提供することを目的とする。
【０００６】
【課題を解決するための手段】
本発明の天井パネル用梁構造は、天井パネルの縁部を支持するための天井パネル用梁構造であって、ルーム天井に吊り下げられる長尺のもので、幅方向に間隔をあけて並設される主梁部材と、該主梁部材の隣り合うもの同士に両端部が連結される副梁部材とを有し、上記主梁部材は、幅方向の両側の少なくとも一方に長手方向に沿って、副梁部材の端部を係止させる第１凹溝を有し、上記副梁部材は、両端部のそれぞれに、上記第１凹溝に入って係止される第１係止部を有し、更に、第１係止部が第１凹溝に入って係止される状態を、機械的な変位により保持するロック手段を具備することを特徴とする。
【０００７】
この発明梁構造による場合には、幅方向に隣り合う主梁部材の第１凹溝に副梁部材の第１係止部を係止させ、その係止状態を、ロック手段の機械的な変位により保持すると、幅方向に隣り合う主梁部材に両端が係止状態で副梁部材が取付けられる。ここで、機械的な変位とは、スライドまたは揺動などによる変位をいう。よって、ビスを使用しないため、切り屑の発生が抑制され、クリーンルームに適用してもクリーンルームの清浄性を向上させることができ、しかもビス止め作業が要らず、隣り合う主梁部材の第１凹溝に副梁部材の第１係止部を係止してロック手段を機械的に変位させるだけで主梁部材と副梁部材の両者の連結ができるので、作業性の改善を図り得る。
【０００８】
本発明の天井パネル用梁構造において、前記第１凹溝は上方が開口したもので、前記第１係止部は上記第１凹溝に上方から入る鉤形状に形成され、前記ロック手段は主梁部材の副梁部材よりも上方位置に設けた係合部に上端部を係合させ、その状態で揺動させることで下端部が副梁部材の上方への移動を防止する構成とすることができる。
【０００９】
この構成にあっては、上方が開口した主梁部材の第１凹溝に、副梁部材における第１係止部の鉤状部材を上方から入れ、ロック手段の上端部を、主梁部材の副梁部材よりも上方位置に設けた係合部に係合させ、その状態でロック手段を揺動させることで下端部が副梁部材の上側への移動を防止する、つまり第１凹溝に係止部が係止した状態をロックするようになる。
【００１０】
本発明の天井パネル用梁構造において、前記第１凹溝および前記第１係止部が、高さを異ならせて複数設けられている構成とすることができる。
【００１１】
この構成にあっては、第１凹溝と第１係止部とが高さ位置を変えて複数設けられ、つまり上下方向位置が異なる複数箇所で主梁部材と副梁部材が連結されるため、副梁部材が傾くことが防止され、これにより両者の連結状態がより確実に保持される。
【００１２】
本発明の天井パネル用梁構造において、主梁部材は、その幅方向の両側の少なくとも一方に、副梁部材の端部が載置される載置部を有し、その載置部に副梁部材の端部を上方から載置させたとき、副梁部材の第１係止部のうちの一つが主梁部材の該当する第１凹溝に入って係止されると同時に、副梁部材の残りの第１係止部が主梁部材の残りの該当する第１凹溝に入って係止されるように構成することができる。
【００１３】
この構成にあっては、載置部に副梁部材の端部を上方から載置させると、第１凹溝のうちの一つと第１係止部のうちの一つが係止すると同時に、残りの第１凹溝と残りの第１係止部とが係止するので、作業性の向上が図れる。
【００１４】
本発明の天井パネル用梁構造において、前記第１凹溝は上方が開口したもので、前記第１係止部は前記第１凹溝に入って係止される鉤形状に形成されたものであり、前記ロック手段は、前記主梁部材の幅方向の両側の少なくとも一方に長手方向に沿って設けられた、側方が開口した第２凹溝と、前記副梁部材の長手方向に沿って設けられた第３凹溝にスライド可能に取付けられ、副梁部材の端部から外方に突出させることで上記第２凹溝に入る連結棒とを有するものである構成とすることができる。
【００１５】
この構成にあっては、主梁部材の第１凹溝に副梁部材の第１係止部を係止した状態で、第３凹溝に取付けた連結棒をスライドさせて、各主梁部材の側方に開口した第２凹溝に連結棒の一部（先端部）を挿入させることにより、副梁部材が主梁部材に連結される。よって、作業性の改善を図り得る。
【００１６】
本発明の天井パネル用梁構造において、主梁部材は、その幅方向の両側の少なくとも一方に、副梁部材の端部が載置される載置部を有し、その載置部に副梁部材の端部を上方から載置させたとき、副梁部材の係止部が主梁部材の第１凹溝に入って係止されるとともに、副梁部材の第３凹溝が主梁部材の第２凹溝に一致する高さになるように構成することができる。
【００１７】
この構成にあっては、主梁部材の載置部に副梁部材の端部を上方から載置させたとき、副梁部材の係止部が主梁部材の第１凹溝に入って係止されるようになっているので、隣り合う主梁部材の載置部に副梁部材の両端部を上方から載置すると、各主梁部材の上方に開口した第１凹溝に副梁部材の係止部が自ずと入って係止し、主梁部材と副梁部材の両者が連結される。また、その連結時、副梁部材の第３凹溝と主梁部材の第２凹溝の高さが一致するので、第３凹溝にスライド可能に取付けられた連結棒を、主梁部材の第２凹溝に容易に挿入させることが可能となり、作業性が大幅に向上することとなる。
【００１８】
本発明の天井パネル用梁構造において、前記載置部の上方に第２凹溝が、その第２凹溝の上に第１凹溝が形成されており、第２凹溝は第１凹溝よりも載置部寄りの位置に設けられている構成とすることができる。
【００１９】
この構成にあっては、第２凹溝と連結棒の連結部分と、これとは上下方向位置が異なる前記第１係止部と第１凹溝の係止部分との２位置の間の距離を大きくとることが可能となり、これにより副梁部材の傾き防止がより確実とされる。
【００２０】
本発明の天井パネル用梁構造において、副梁部材の端部の下端が、主梁部材の載置部の厚み分だけ切欠かれていて、主梁部材に副梁部材の端部を連結させた状態で、主梁部材の下面と副梁部材の下面とが面一となるように構成することができる。
【００２１】
この構成による場合には、主梁部材に連結された副梁部材の下面と主梁部材の下面とを面一にすることが可能となり、凹凸の無い綺麗な梁構造とすることが可能となる。
【００２２】
本発明の天井パネル用梁構造において、副梁部材の端部の下端が主梁部材の載置部の厚み分だけ切欠かれている部分の該端部からの長さが、主梁部材の載置部の幅寸法とほぼ一致するように設定されている構成とすることができる。
【００２３】
この構成にあっては、主梁部材と副梁部材の端部とを連結した状態において、主梁部材の載置部の端と副梁部材の切欠かれている部分の端とがほぼ一致するので、両端の間に隙間がほぼ無い状態にすることが可能となる。よって、主梁部材の載置部を利用して天井パネルを載せた場合に、ゴミが落下する隙間を無くすることが可能となり、クリーンルームに適用してもクリーンルームの清浄性を極めて向上させることができる。
【００２４】
本発明の天井パネル用梁構造において、前記主梁部材は、幅方向の両側の少なくとも一方に長手方向に沿って第４凹溝が形成され、該第４凹溝にスライド可能に第２連結棒が取付けられ、該第２連結棒を介して長手方向に並設される主梁部材同士が連結される構成とすることができる。
【００２５】
この構成にあっては、長手方向に並設される主梁部材の端面同士を突き合わせ、第４凹溝にスライド可能に取付けられた第２連結棒をスライドさせて両主梁部材の第４凹溝に、第２連結棒の片側半分ともう片側半分を入れた状態にすることで、主梁部材を、その長手方向に並設させることができる。
【００２６】
本発明の天井パネル用梁構造において、前記主梁部材は、幅方向の両側の少なくとも一方に長手方向に沿って第５凹溝が形成され、該第５凹溝は、円弧状であって、開口を内奥部よりも狭くして形成され、前記ロック手段は、上記第５凹溝に取付けられる、断面が概略円弧状をした取付部が、一端側の縁に沿って設けられたものであり、該取付部がその曲率半径を上記第５凹溝の曲率半径とほぼ同一に、かつ取付部の一部外周にその長手方向に沿って上記開口を通すための切欠き部が形成されている構成とすることができる。
【００２７】
この構成にあっては、上方が開口した主梁部材の第１凹溝に、副梁部材における第１係止部の鉤状部材を上方から入れ、ロック手段の取付部を、切欠き部が開口とほぼ直交する状態にして第５凹溝に入れてロック手段を揺動させることで、ロック手段が副梁部材の上側への移動を防止する、つまり第１凹溝に係止部が係止した状態をロックするようになる。
【００２８】
【発明の実施の形態】
以下、本発明の実施形態を具体的に説明する。
【００２９】
（第１実施形態）
図１は本発明の第１実施形態に係る天井パネル用梁構造の連結部分を示す断面図であり、図２はその天井パネル用梁構造の組立状態を説明するための図（斜視図）である。なお、図２は一方の連結部分を示している。
【００３０】
この天井パネル用梁構造１は、クリーンルームの天井に採用されていて、天井パネル２の縁部を支持するものであり、天井に吊り下げられる長尺のもので、幅方向に間隔をあけて並設される主梁部材１０と、その主梁部材１０の隣り合うもの同士に両端部が連結される副梁部材２０と、その副梁部材２０にスライド可能に取付けられ、副梁部材２０の両端部から外方に突出させることで上記主梁部材１０と副梁部材２０との結合状態をロックするために用いられるロック手段としての連結棒３０とを有する。
【００３１】
図３は主梁部材１０を示す斜視図で、図４（ａ）は図３の主梁部材１０の左端面を示す側面図、図４（ｂ）はその主梁部材１０の下部部分Ａを拡大して示す側面図である。
【００３２】
主梁部材１０は、図４（ａ）に示す左右対称の断面形状を全長にわたり有するとともに長手方向の両端面が凹凸の無い平面的な長尺のもので、例えばアルミニウム等の金属製であり、引き抜き加工または押し出し加工した後に切断されることにより製造されたものである。主梁部材１０の上端部には、上方が開口した取付部１１が形成され、取付部１１の下側には、幅方向中央部に設けた垂下部１２を介して上方が開口した第１凹溝１３が幅方向両側に形成され、各第１凹溝１３の下側には、パネル支持片４０（図１参照）が取付けられる、開口が斜め下向きの取付け溝１４が形成され、各取付け溝１４の下側には幅方向に深さを有する側方が開口した第２凹溝１５が形成され、各第２凹溝１５の下側の下端部には副梁部材２０の端部２１を載置する載置部１６が突出形成されている（図１参照）。また、幅方向両側の載置部１６の間には、長手方向両端を除いて４方が壁で覆われた空洞部１７が設けられ、その空洞部１７を形成する底面１８の上側には、一対の対向片１９が形成されている。これら両対向片１９の対向面には、互いに高さ位置をずらして凹凸部１９ａが形成され（図４（ｂ）参照）、底面１８の両対向片１９の下側部分は、他の箇所よりも薄い薄肉部１８ａとなっている。この薄肉部１８ａおよび両対向片１９は、後述するようにビス止め部として機能する。
【００３３】
かかる主梁部材１０は、天井に上端部が取付けられる棒状部材１２０の下端部に取付けたナット１２１を取付部１１に入れることで天井から吊り下げられる（図１参照）。
【００３４】
図５は、副梁部材２０を示す斜視図で、図６（ａ）はその副梁部材２０を示す正面図、図６（ｂ）はその右側面図である。
【００３５】
この副梁部材２０は、例えばアルミニウム等の金属製であり、引き抜き加工または押し出し加工した後に両端部分を凹凸状に切削加工する等により製造され、側面視および正面視で左右対称のものである。具体的には、図６（ｂ）に示すように、幅方向に離隔した一対の側壁２２、２３を有し、これら両側壁２２、２３の間の上部に天井板部２４が掛け渡され、両側壁２２、２３の下端には、幅方向両側に突出した状態で底板部２５が設けられた断面形状を有し、両側壁２２、２３の長手方向両端における上部には、外側に突出するとともに基端部が切り欠かれた鉤形状に形成された第１係止部としての係止部２６が設けられている。また、底板部２５は、長手方向両端部分が切欠き長さＬ３で切り欠かれ、両側壁２２、２３の長手方向両端の下端２２ａ、２３ａ（前記２１に相当）がむき出し状態となっていて、その下端２２ａ、２３ａは、後述する載置面として機能する。更に、両側壁２２、２３には、所定高さ位置、つまり第２凹溝１５に対応する高さ位置に、第３凹溝２７が内側に突出させて設けられている。この第３凹溝２７は開口よりも内奥部の方が広い円弧状に形成され、その第３凹溝２７には、長手方向から円柱状の連結棒３０が、スライド可能であって、副梁部材２０を傾けても抜け落ちない程度の摩擦力で取付けられている。
【００３６】
次に、上述したように天井に吊り下げられる主梁部材１０の各部と副梁部材２０の各部の関連事項につき、図１および図２に基づき説明する。
【００３７】
副梁部材２０の鉤形の係止部２６は、主梁部材１０の上方が開口した第１凹溝１３に、上側から取付けられる。第１凹溝１３は開口側が内奥側よりも広いテーパー状に形成され、係止部２６の下側は、第１凹溝１３とは逆テーパー状に形成され、係止部２６の第１凹溝１３への取付け状態は、点接触ではなく線接触となるように設定されている。つまり、副梁部材２０の端部の上側をハンマー等で下側に向けて叩くと、第１凹溝１３のテーパー面１３ａと係止部２６のテーパー面２６ａを介して係止部２６が第１凹溝１３の内奥まで入り込み可能となっている。
【００３８】
かかる係止部２６の第１凹溝１３への取付け状態において、副梁部材２０の下端２２ａ、２３ａは、主梁部材１０の載置部１６に載置され、載置面として機能する。載置部１６は、底板部２５と同一厚みに形成されており、下端２２ａ、２３ａを載置部１６に載置すると、載置部１６と底板部２５の下面は面一となる。また、下端２２ａ、２３ａの長手方向長さ、つまり前記切欠き長さＬ３は、載置部１６の幅方向長さＬ４（図４（ａ）参照）にほぼ一致するように設定されており、下端２２ａ、２３ａを載置部１６に載置すると、載置部１６と底板部２５の間に殆ど隙間が無い状態となる。
【００３９】
また、係止部２６の第１凹溝１３への取付け状態において、主梁部材１０の第２凹溝１５と、副梁部材２０の第３凹溝２７との高さ位置が同一となるように設計されており、第２凹溝１５の内径は連結棒３０の外径とほぼ同一寸法となっている。第３凹溝２７に取付けられた連結棒３０に強い力を作用させてスライドさせることにより、連結棒３０の先端部を第２凹溝１５に圧入させることで、連結棒３０が第２凹溝１５から抜け出ないようになっている。上記連結棒３０と第２凹溝１５とは、係止部２６が第１凹溝１３から抜け出るのを防止するロック手段を構成する。上記強い力とは、例えば第３凹溝２７の開口から叩き用の金属部材を差し入れて連結棒３０の基端に当接し、その金属部材をハンマー等により叩くときの力などが相当する。
【００４０】
したがって、天井に幅方向に並設状態で吊り下げられた２つの主梁部材１０の第１凹溝１３に、副梁部材２０の両側の係止部２６を上側から取付けると、これに伴って第２凹溝１５と第３凹溝２７の高さが同一となる。加えて、載置部１６と底板部２５の下面が面一になるとともに載置部１６と底板部２５の間に殆ど隙間が無い状態となる。なお、第１凹溝１３への係止部２６の入り込みが浅い場合は、例えば副梁部材２０の長さ寸法に対して幅方向に並設された主梁部材１０同士の距離が少し長い場合は、ハンマー等で叩くことで、第２凹溝１５と第３凹溝２７の高さが同一とされる。その後、連結棒３０を手作業によりスライドさせると、連結棒３０の先端部が第２凹溝１５に圧入し、連結作業が終了する。
【００４１】
このように第１実施形態の天井パネル用梁構造による場合には、主梁部材１０と副梁部材２０の連結にビスを使用しないので、切り屑の発生が抑制され、クリーンルームに適用してもクリーンルームの清浄性を向上させることができ、しかもビス止め作業が要らず、隣り合う主梁部材１０の第１凹溝１３に副梁部材２０の係止部２６を係止して連結棒３０をスライドさせるだけで主梁部材１０と副梁部材２０の両者の連結ができるので、作業性の改善を図り得る。更に、第２凹溝１５と連結棒３０の連結部分、および係止部２６と第１凹溝１３の係止部分の上下方向位置が異なる２箇所で主梁部材１０と副梁部材２０が連結されるので、副梁部材２０が傾くことが防止され、これにより主梁部材１０と副梁部材２０の両者の連結状態がより確実に保持される。
【００４２】
また、第１実施形態においては、主梁部材１０の載置部１６に副梁部材２０の下端２２ａ、２３ａを上方から載置させたとき、副梁部材２０の係止部２６が主梁部材１０の第１凹溝１３に入って係止されるようになっているので、隣り合う主梁部材１０の載置部１６に副梁部材２０の両端部の下端２２ａ、２３ａを上方から載置するだけで、各主梁部材１０の上方に開口した第１凹溝１３に副梁部材２０の係止部２６が自ずと入って係止し、主梁部材１０と副梁部材２０の両者を連結させ得、このことによっても作業性の改善が図られる。また、その連結時、副梁部材２０の第３凹溝２７と主梁部材１０の第２凹溝１５の高さが一致するので、つまり位置合わせ作業を不要にできるので、第３凹溝２７にスライド可能に取付けられた連結棒３０を、主梁部材１０の第２凹溝１５に容易に挿入させることが可能となり、作業性を大幅に向上させることができる。
【００４３】
また、第１実施形態においては、第２凹溝１５が載置部１６寄りの位置に設けているので、第２凹溝１５と連結棒３０の連結部分と、これとは上下方向位置が異なる係止部２６の第１凹溝１３との係止部分との２位置の間の距離を大きくとることが可能となり、これにより副梁部材２０が傾くことをより確実に防止することができる。
【００４４】
また、第１実施形態においては、載置部１６と底板部２５がほぼ同一厚みに形成され、底板部２５の端部が切り欠かれて副梁部材２０の両側壁２２、２３の下端２２ａ、２３ａが載置面として機能するので、主梁部材１０に副梁部材２０の端部を連結させた状態で、主梁部材１０の載置部１６の下面と副梁部材２０の底板部２５の下面とを面一にすることが可能となり、凹凸の無い綺麗な梁構造とすることが可能となる。
【００４５】
なお、上記パネル支持片４０は、図７に示すように一定幅の長尺のもので、長辺の一端側に断面が概略円弧状をした取付部４１が形成され、その取付部４１の外周部が長手方向に沿って切欠き部４２が形成されている。一方、このパネル支持片４０が取付けられる前記取付け溝１４は、図８に示すように開口１４ａが斜め下向きで、その開口１４ａよりも内奥部が広い円弧状に形成されている。
【００４６】
この取付け溝１４へのパネル支持片４０の取付けは、図８の左側に二点鎖線にて示すように、取付部４１を下側にしてパネル支持片４０を起立姿勢Ｂとし、斜め上方Ｄに移動させて取付部４１を開口１４ａに挿入させる。この起立姿勢Ｂのとき、切欠き部４２は、取付け溝１４の開口１４ａを形成する開口幅方向の両縁部を結ぶ線分方向に対し、取付部４１の曲率中心Ｏと切欠き部４２とを結ぶ直径方向がほぼ平行となるように形成しておく。そして、パネル支持片４０は、上記切欠き部４２と曲率中心Ｏとを結ぶ直径方向を開口１４ａの両縁部を結ぶ線分方向にほぼ平行な状態として開口１４ａに挿入させる。即ち、切欠き部４２と曲率中心Ｏを通る直径寸法Ｌ１は他の部分よりも短く、かつ開口１４ａの幅寸法Ｌ２よりも少し短く設定されており、開口１４ａを通過させることが可能となっている。
【００４７】
その後、パネル支持片４０の取付部４１とは反対側を下方（矢印方向）に押して水平姿勢Ｃとなるように揺動させることで、取付部４１が取付け溝１４に抜け防止状態に取付けられる。この水平姿勢Ｃのとき、前記切欠き部４２が開口１４ａの外側に位置する（外側に露出する）ように、取付部４１に形成しておく。即ち、取付部４１が取付け溝１４から抜け出ないようにし、かつ、切欠き部４２以外の断面円弧状の取付部４１と断面円弧状の空洞の取付け溝１４との接触面積を大きくして取付部４１を取付け溝１４が保持できる強度を増大化させるためである。
【００４８】
そして、図１に示すように水平姿勢Ｃとなったパネル支持片４０の上に、天井パネル２の縁部を載せてビス等により固定することで、天井パネル２が本実施形態の天井パネル用梁構造に支持される。
【００４９】
また、前述した薄肉部１８ａおよび両対向片１９は、以下のようにしてビス止め部として機能する。即ち、薄肉部１８ａの外側からビスの先端を手工具により押し付けつつ回転させると、そのビスにより薄肉部１８ａが破れてビスを通す円形の孔が形成され、両対向片１９の対向面に、互いに高さ位置をずらして形成された凹凸部１９ａにビスのねじ山が係合してビスが締結される。それ故に、ビス止め部として機能する。このビス止め部に取付けられたビスにより、例えば蛍光灯などの光源、間仕切り部材などが固定される。なお、上述したようにパネル支持片４０の上に天井パネル２を固定する場合とビス止め部に光源または間仕切り部材等を固定する場合にはビスを用いるが、そのビスの使用量は、本発明の対象である梁構造にはビスを全く使用しないため従来に比べて僅かである。特に、ビス止め部に光源または間仕切り部材等を固定する場合には、ビス止め部が４方を壁で覆われた空洞部１７の内部に設けられ、空洞部１７の両端の開口には一般に蓋が被せられる故に、ビス止めの際に発生した切り屑が空洞部１７の内部に抜け出ること無く保持されるので、クリーンルームの清浄性を向上させることが可能である。
【００５０】
図９は、主梁部材１０をその長手方向に連結する状態の説明図（分解斜視図）である。上述したパネル支持片４０が取付けられる取付け溝１４の端部に、円柱状をした第２連結棒３１をスライド可能に取付けておき、２つの主梁部材１０の端面同士を突き合わせ、前述した連結棒３０と同様にハンマー等による強い力でスライドさせて、第２連結棒３１の一方側を２つの主梁部材１０の一方１０Ａの取付け溝１４に圧入し、第２連結棒３１の他方側を他方の主梁部材１０Ｂの取付け溝１４に圧入させる。これにより、主梁部材１０をその長手方向に連結させることが可能となる。この第２連結棒３１は、主梁部材１０の両端部のみに取付けられるので、主梁部材１０の中間部にパネル支持片４０を取付ける際に邪魔にならない。更に、連結強度を向上させる場合は、上方が開口した取付部１１の上に、断面コの字状をした連結片３２を、２つの主梁部材１０に跨るように配置し、かつ、その連結片３２の２箇所に予め形成されている取付孔３３のそれぞれの内側にナット３４を配置し、連結片３２の上側からボルト３５をナット３４に螺合させることで、２つの主梁部材１０Ａ、１０Ｂのより強固な連結が可能となる。このような連結により、多数の主梁部材１０の連結が行われる。
【００５１】
なお、上述した第１実施形態では主梁部材として、両側それぞれに第１凹溝、取付け溝、第２凹溝および載置部が形成されたものを用いているが、本発明はこれに限らない。例えば、幅方向に並設される主梁部材のうちの最外側に配置されるものにあっては、上述した第１凹溝、取付け溝、第２凹溝および載置部が片側のみに形成された主梁部材を使用することもできる。
【００５２】
また、上述した第１実施形態では連結棒がスライド可能に取付けられる第３凹溝を副梁部材の全長にわたって設けているが、本発明はこれに限らず、副梁部材の両端部にのみ連結棒のスライドを可能とする範囲で設けてもよい。
【００５３】
（第２実施形態）
図１０は本発明の第２実施形態に係る天井パネル用梁構造の連結部分を示す断面図であり、図１１は第２実施形態の天井パネル用梁構造に用いる主梁部材を示す外観斜視図、図１２は同じく副梁部材を示す外観斜視図、図１３（ａ）は副梁部材を示す正面図、図１３（ｂ）は副梁部材の右側面図、図１４は第２実施形態の天井パネル用梁構造に用いるロック部材を示す外観斜視図である。
【００５４】
この天井パネル用梁構造は、幅方向に間隔をあけて並設される主梁部材５０と、その主梁部材５０の隣り合うもの同士に両端部が連結される副梁部材６０と、主梁部材５０の上部と副梁部材６０の上部との間に揺動させて取付けられ、主梁部材５０と副梁部材６０との結合状態をロックするために用いられるロック手段としての断面Ｌ形のロック部材７０とを有する。
【００５５】
主梁部材５０は、図１１に示す左右対称の断面形状を全長にわたり有するとともに長手方向の両端面が凹凸の無い平面的な長尺のもので、例えばアルミニウム等の金属製であり、引き抜き加工または押し出し加工した後に切断されることにより製造されたものである。主梁部材５０の上端部には、上方が開口した取付部５１が形成され、取付部５１の下側には、幅方向中央部に設けた垂下部５２を介して上方が開口した第１凹溝としての上部凹溝５３が幅方向両側に形成され、各上部凹溝５３の下側には、パネル支持片８０（図１０参照）が取付けられる、開口が斜め下向きの取付け溝（第２実施形態では第４凹溝）５４が形成され、各取付け溝５４の下側には垂下部５２ａと、上方が開口した第１凹溝としての下部凹溝５５とが形成され、各下部凹溝５５の下側の下端部には副梁部材６０の端部６１および天井パネル２（図１０参照）を載置する載置部５６が突出形成されている。また、幅方向両側の載置部５６の間には、長手方向両端を除いて４方が壁で覆われた空洞部５７が設けられている。空洞部５７の下側部分は、他の箇所よりも薄い薄肉部５８ａとなっている。この薄肉部５８ａは、第１実施形態の薄肉部１８ａと同様なビス止め部として機能する。また、取付部５１の幅方向両端の下側には、下側に突出した係合部５１ａが形成されており、また垂下部５２ａの幅方向両側にはロック係止部５２ｂが形成されている。
【００５６】
かかる主梁部材５０は、第１実施形態と同様に、天井に上端部が取付けられる棒状部材１２０の下端部に取付けたナット１２１を取付部５１に入れることで天井から吊り下げられる（図１０参照）。また、主梁部材５０の長手方向への連結は、第１実施形態と同様に取付け溝５４に、図９に示したように第２連結棒３１を取付けて行うことができる。
【００５７】
上記副梁部材６０は、例えばアルミニウム等の金属製であり、引き抜き加工または押し出し加工した後に両端部分を凹凸状に切削加工する等により製造され、側面視および正面視で左右対称のものである。具体的には、図１２および図１３に示すように、上側には天井板部６２の幅方向両端に一対の側壁６３、６３を有し、天井板部６２の下側には垂下部６４が設けられ、垂下部６４の下側には中天井板部６５が設けられていて、中天井板部６５の幅方向両端の下側には側壁６６、６７が形成され、これら両側壁６６、６７の下端には、幅方向両側に突出した状態で底板部６８が設けられた断面形状を有する。垂下部６４の長手方向両端の高さ方向中間部は切欠かれていて、その切欠部６４ａの上部には、基端部が上側に切り欠かれて鉤形状に形成された第１係止部としての上部係止部６９Ａが設けられている。また、底板部６８は、長手方向両端部分が切欠き長さＬ５で切り欠かれ、両側壁６６、６７の長手方向両端の下端６６ａ、６７ａ（前記６１に相当）がむき出し状態となっていて、その下端６６ａ、６７ａは、後述する載置面として機能する。その下端６６ａ、６７ａの長手方向端部には、下側が開口するように上側に切欠かれて鉤形状に形成された第１係止部としての下部係止部６９Ｂ、６９Ｃが設けられている。つまり、この第２実施形態では、第１係止部が上下２位置に高さを異ならせて設けられている。
【００５８】
上記ロック部材７０は、図１４に示すように概略断面Ｌ形状に形成され、上端部７１は前記主梁部材５０の係合部５１ａに入る二股状に形成されており、下端部７２の先端には下側に突出した係合部７３が設けられている。このロック部材７０は、図１０に示すように、係合部５１ａに上端部７１を係合させて、下端部７２で副梁部材６０の天井板部６２が上側へ移動するのを防止するもので、上端部７１〜下端部７２までの長さＬ８は所定値に設定されており、係合部７３は、後述するように垂下部５２と上部係止部６９Ａとの間に形成される隙間Ｌ７に入るようになっている。
【００５９】
次に、上述したように天井に吊り下げられる主梁部材５０の各部と副梁部材６０の各部の関連事項につき、図１０に基づき説明する。
【００６０】
副梁部材６０の鉤形の上部係止部６９Ａは、主梁部材５０の上方が開口した上部凹溝５３に、上側から取付けられる。上部凹溝５３は開口側が内奥側よりも広いテーパー状に形成され、上部係止部６９Ａの下側は、上部凹溝５３とは逆テーパー状に形成され、上部係止部６９Ａの上部凹溝５３への取付け状態は、点接触ではなく線接触となるように設定されている。つまり、副梁部材６０の端部の上側を、ハンマー等で下側に向けて叩くと、上部係止部６９Ａのテーパー面６９Ａａと上部凹溝５３のテーパー面５３ａを介して上部係止部６９Ａが内奥まで入り込み可能となっている。
【００６１】
かかる上部係止部６９Ａの上部凹溝５３への取付けの際、これと同時に、副梁部材６０の鉤形の下部係止部６９Ｂ、６９Ｃは、主梁部材５０の上方が開口した下部凹溝５５の２箇所に、上側から取付けられる。下部凹溝５５は開口側が内奥側よりも広いテーパー状に形成され、下部係止部６９Ｂ、６９Ｃの下側は、下部凹溝５５とは逆テーパー状に形成され、下部係止部６９Ｂ、６９Ｃの下部凹溝５５への取付け状態は、線接触となるように設定されている。つまり、副梁部材６０の端部の上側をハンマー等で下側に向けて叩くと、下部凹溝５５のテーパー面５５ａと下部係止部６９Ｂ、６９Ｃの各テーパー面６９Ｂａ、６９Ｃａを介して下部係止部６９Ｂ、６９Ｃが内奥まで入り込み可能となっている。
【００６２】
また、下部係止部６９Ｂ、６９Ｃは、図１０に示すように、前記空洞部５７を形成する側壁５７ａに当接またはそれに近い状態となり、上部係止部６９Ａは垂下部５２との間に隙間Ｌ７が形成される。この隙間Ｌ７は、垂下部５２と空洞部５７との幅方向寸法の違いにより形成されるものである。
【００６３】
また、上部係止部６９Ａの上部凹溝５３への取付け状態において、副梁部材６０の下端６６ａ、６７ａは、主梁部材５０の載置部５６に載置され、載置面として機能する。載置部５６は、底板部６８と同一厚みに形成されており、下端６６ａ、６７ａを載置部５６に載置すると、載置部５６と底板部６８の下面は面一となる。また、下端６６ａ、６７ａの長手方向長さ、つまり前記切欠き長さＬ５は、載置部５６の幅方向長さＬ６（図１０参照）に一致するように設定されており、下端６６ａ、６７ａを載置部５６に載置すると、載置部５６と底板部６８の間に殆ど隙間が無い状態となる。
【００６４】
また、上部係止部６９Ａの上部凹溝５３への取付け状態において、主梁部材５０の係合部５１ａから副梁部材６０の天井板部６２までの距離が、ロック部材７０の前記長さＬ８とほぼ同一となるように設計されており、ロック部材７０の取付けは以下のように行われる。すなわち、図１５に示すようにロック部材７０の上端部７１を係合部５１ａに係合させ、下側の係合部７３を天井板部６２の上に当接するように取付ける。そして、ロック部材７０の下端側を白抜矢符に示すようにハンマー等で叩くて、係合部７３を前記隙間Ｌ７に入れる。これにより、上端部７１と係合部７３が固定されてロック部材７０が抜け防止されると共に、このロツク部材７０の固定により副梁部材６０が上方へ移動した主梁部材５０との連結状態が非連結状態となるのを防止する。つまり、上部係止部６９Ａが上部凹溝５３に連結されている状態、および、下部係止部６９Ｂ、６９Ｃが下部凹溝５５に連結されている状態をロックする。
【００６５】
したがって、天井に幅方向に並設状態で吊り下げられた２つの主梁部材５０の上部凹溝５３に、副梁部材６０の上部係止部６９Ａを上側から取付けると、これに伴って下部凹溝５５に下部係止部６９Ｂ、６９Ｃが取付られる。加えて、載置部５６と底板部６８の下面が面一になるとともに載置部５６と底板部６８の間に殆ど隙間が無い状態となり、更に主梁部材５０の係合部５１ａと副梁部材６０の天井板部６２との間の距離がロック部材７０の長さＬ８とほぼ同一となる。なお、上部凹溝５３への上部係止部６９Ａの入り込みが浅い場合は、例えば副梁部材６０の長さ寸法に対して幅方向に並設された主梁部材同士の間の距離が少し長い場合は、ハンマー等で叩くことで上部係止部６９Ａが上部凹溝５３の内奥部へ入り込んだ状態とされる。このことは、下部係止部６９Ｂ、６９Ｃと下部凹溝５５との間でも同様に同時に起こる。その後、ロック部材７０の上端部７１を係合部５１ａに係合させ、下側の係合部７３を天井板部６２の上に当接するように取付け、その状態のロック部材７０の下側をハンマー等で叩いてロック部材７０を揺動させ、係合部７３を前記隙間Ｌ７に入れてロック部材７０を固定させると、連結作業が終了する。
【００６６】
このように第２実施形態の天井パネル用梁構造による場合には、主梁部材５０と副梁部材６０の連結にビスを使用しないので、切り屑の発生が抑制され、クリーンルームに適用してもクリーンルームの清浄性を向上させることができ、しかもビス止め作業が要らず、隣り合う主梁部材５０の上部凹溝５３に副梁部材６０の上部係止部６９Ａを係止すると共に下部凹溝５５に下部係止部６９Ｂ、６９Ｃを係止し、その後ロック部材７０を揺動により取付けるだけで主梁部材５０と副梁部材６０の両者の連結ができるので、作業性の改善を図り得る。更に、下部凹溝５５と下部係止部６９Ｂ、６９Ｃの係止部分、および上部係止部６９Ａと上部凹溝５３の係止部分の上下方向位置が異なる２箇所で主梁部材５０と副梁部材６０が連結されるので、副梁部材６０が傾くことが防止され、これにより主梁部材５０と副梁部材６０の両者の連結状態がより確実に保持される。
【００６７】
また、第２実施形態においては、主梁部材５０の載置部５６に副梁部材６０の下端６６ａ、６７ａを上方から載置させたとき、副梁部材６０の上部係止部６９Ａが主梁部材５０の上部凹溝５３に入って係止されるようになっているので、隣り合う主梁部材５０の載置部５６に副梁部材６０の両端部の下端６６ａ、６７ａを上方から載置するだけで、各主梁部材５０の上方に開口した上部凹溝５３および下部凹溝５５に副梁部材６０の上部係止部６９Ａおよび下部係止部６９Ｂ、６９Ｃが自ずと入って係止し、主梁部材５０と副梁部材６０の両者を連結させ得、このことによっても作業性の改善が図られる。
【００６８】
また、第２実施形態においては、下部凹溝５５が上部凹溝５３よりも載置部５６寄りの位置に設けているので、下部凹溝５５と下部係止部６９Ｂ、６９Ｃとの係止部分と、これとは上下方向位置が異なる上部係止部６９Ａの上部凹溝５３との係止部分との２位置の間の距離を大きくとることが可能となり、これにより副梁部材６０が傾くことをより確実に防止することができる。
【００６９】
また、第２実施形態においては、載置部５６と底板部６８が同一厚みに形成され、底板部６８の端部が切り欠かれて副梁部材６０の両側壁６６、６７の下端６６ａ、６７ａが載置面として機能するので、主梁部材５０に副梁部材６０の端部を連結させた状態で、主梁部材５０の載置部５６の下面と副梁部材６０の底板部６８の下面とを面一にすることが可能となり、凹凸の無い綺麗な梁構造とすることが可能となる。
【００７０】
なお、上記パネル支持片８０は、図１０および図１６に示すように断面Ｌ形状の長尺のもので、一端側（図上側）に断面が概略円弧状をした取付部８１が形成され、その取付部８１の外周部が長手方向に沿って切欠き部８２が形成されている。また、曲折方向とは反対の外側には固定用の鉤状部８３が設けられている。一方、このパネル支持片８０が取付けられる前記取付け溝５４は、図１６に示すように開口５４ａが斜め下向きで、その開口５４ａよりも内奥部が広い円弧状に形成されている。
【００７１】
この取付け溝５４へのパネル支持片８０の取付けは、図１６に一点鎖線にて示すように、パネル支持片８０の取付部８１とは反対側を上側にしてパネル支持片８０を起立姿勢Ｅとし、斜め上方Ｆに移動させて取付部８１を開口５４ａに挿入させる。この起立姿勢Ｅのとき、切欠き部８２は、取付け溝５４の開口５４ａを形成する開口幅方向の両縁部を結ぶ線分方向に対し、取付部８１の曲率中心Ｏと切欠き部８２とを結ぶ直径方向がほぼ平行となるように形成しておく。そして、パネル支持片８０は、上記切欠き部８２と曲率中心Ｏとを結ぶ直径方向を開口５４ａの両縁部を結ぶ線分方向にほぼ平行な状態として開口５４ａに挿入させる。即ち、切欠き部８２と曲率中心Ｏを通る直径寸法Ｌ９は他の部分よりも短く、かつ開口５４ａの幅寸法Ｌ１０よりも少し短く設定されており、開口５４ａを通過させることが可能となっている。
【００７２】
その後、パネル支持片８０の取付部８１とは反対側を下方（矢印方向）に押して水平姿勢Ｇとなるように揺動させることで、取付部８１が取付け溝５４に抜け防止状態に取付けられる。また、鉤状部８３をロック係止部５２ｂに係止させることで、水平姿勢Ｇを保持するようにする。この水平姿勢Ｇのとき、前記切欠き部８２が開口５４ａの外側に位置する（外側に露出する）ように、取付部８１に形成しておく。即ち、取付部８１が取付け溝５４から抜け出ないようにし、かつ、切欠き部８２以外の断面円弧状の取付部８１と断面円弧状の空洞の取付け溝５４との接触面積を大きくして取付部８１を取付け溝５４が保持できる強度を増大化させるためである。
【００７３】
そして、図１０に示すように水平姿勢Ｇとなったパネル支持片８０が、載置部５６及び底板部６８の上に配置された天井パネル２の縁部を、その上側から押圧することで、天井パネル２が本実施形態の天井パネル用梁構造に支持される。
【００７４】
（第３実施形態）
上述した第２実施形態では取付け溝５４にパネル支持片８０を取付け（図１０参照）、パネル支持片８０にてパネル２を支持する構成としているが、第３実施形態においては、取付け溝５４を利用してロック部材およびパネル支持片を取付けるように構成している。
【００７５】
図１７は本発明の第３実施形態に係る天井パネル用梁構造の連結部分を示す断面図であり、図１８は図１７のＨ部分を拡大して示す図、図１９は第３実施形態の天井パネル用梁構造に用いる主梁部材を示す外観斜視図、図２０は同じく副梁部材を示す外観斜視図、図２１（ａ）は副梁部材を示す正面図、図２１（ｂ）は副梁部材の右側面図、図２２（ａ）は第３実施形態の天井パネル用梁構造に用いるロック部材を示す正面図、図２２（ｂ）はロック部材を示す左側面図、図２３は第３実施形態の天井パネル用梁構造に用いるパネル支持片を示す正面図である。
【００７６】
本実施形態における主梁部材５０Ａは、第２実施形態の主梁部材５０における垂下部５２ａに設けていたロック係止部５２ｂが省略され、空洞部５７の上面における幅方向両側にロック係止部５２ｂ’が設けられていて、他の部分は第２実施形態の主梁部材５０と同一構成となっている（図１７〜図１９参照）。また、この主梁部材５０Ａ同士の連結も第２実施形態と同様にして行われている。
【００７７】
また、本実施形態における副梁部材６０Ａは、第２実施形態の副梁部材６０における垂下部６４に設けている切欠部６４ａが概略矩形状に形成されているのに対し、下側が広い概略三角形状の切欠部６４ａ’となっている点を除いて、他の部分が第２実施形態の副梁部材６０と同一に構成されている（図２０および図２１参照）。
【００７８】
更に、第３実施形態においては、主梁部材５０Ａの取付け溝（第３実施形態では第５凹溝）５４には、副梁部材６０Ａを連結する箇所にロック部材７５が取付けられ、パネル２を支持する箇所にパネル支持片８５が取付けられる。なお、図１７においては、主梁部材５０Ａの一方（図右側）の取付け溝５４にロック部材７５を、主梁部材５０Ａの他方（図左側）の取付け溝５４にパネル支持片８５を取付けた状態を示しているが、ロック部材７５とパネル支持片８５の取付け位置は、並設された２つの主梁部材５０Ａと、これらに両端が連結された２つの隣り合う副梁部材６０Ａとで矩形状に囲まれた部分にパネル２が配設される故に、異なる位置とされる。
【００７９】
上記ロック部材７５は、図２２に示すように断面Ｌ形状の長尺のもので、一端側（図上側）に断面が概略円弧状をした取付部７６が形成され、その取付部７６の外周部が長手方向に沿って切欠き部７７が形成されている。なお、切欠き部７７と曲率中心Ｏを通る直径寸法Ｌ９は他の部分よりも短く、かつ開口５４ａの幅寸法Ｌ１０（図１７参照）よりも少し短く設定されており、開口５４ａを通過させることが可能となっている。
【００８０】
また、ロック手段７５の他端側（図下側）には固定用の鉤状部７８が設けられており、長さ方向の中央部には逃げ溝７９が形成されている。この逃げ溝７９は、切欠部６４ａ’の下辺部６４ｂとの接触を避けるために設けられている（図２０および図２４参照）。一方、このロック部材７５が取付けられる取付け溝５４は、図１７に示すように開口５４ａが斜め下向きで、その開口５４ａよりも内奥部が広い円弧状に形成されている。
【００８１】
この取付け溝５４へのロック部材７５の取付けは、副梁部材６０Ａの端部が連結される箇所において、第２実施形態におけるパネル支持片８０と同様に行われ、二点鎖線で示すように取付けられる。その後、ロック部材７５を、その下端側が主梁部材５０Ａに近づくように揺動させ、実線で示すように鉤状部７８をロック係止部５２ｂ’に係止させる（図１８参照）。これにより、図２４に示すようにロック部材７５の下端が、副梁部材６０Ａの端部における中天井板部６５を下向きに押付け、かつ逃げ溝７９に下辺部６４ｂが入る。その結果、ロック部材７５が副梁部材６０Ａの上側への移動を防止する、つまり第１凹溝５３、５５に係止部６９Ａ、６９Ｂ、６９Ｃが係止した状態をロックするようになり、副梁部材６０Ａが主梁部材５０Ａに連結される。
【００８２】
パネル支持片８５は、図２３に示すように断面Ｌ形状の長尺のもので、一端側（図上側）に断面が概略円弧状をした取付部８６が形成され、その取付部８６の外周部が長手方向に沿って切欠き部８７が形成されている。なお、切欠き部８７と曲率中心Ｏを通る直径寸法Ｌ９は他の部分よりも短く、かつ開口５４ａの幅寸法Ｌ１０よりも少し短く設定されており（図１７参照）、開口５４ａを通過させることが可能となっている。また、曲折方向にはパネル押さえ部８８が形成され、曲折方向とは反対側には固定用の鉤状部８９が設けられている。
【００８３】
このパネル支持片８５は、隣り合う２つの副梁部材６０Ａの各端部が主梁部材５０Ａに連結される部分を避けた箇所において、前記取付け溝５４に第２実施形態のパネル支持片８０と同様にして取付けられることで（但し、図１８に示すように鉤状部８９がロック係止部５２ｂ’に係止される）、図１７に示すように載置部５６及び底板部６８の上に配置された天井パネル２の縁部を、その上側から押圧する。これにより、天井パネル２が本実施形態の天井パネル用梁構造に支持される。
【００８４】
したがって、この第３実施形態による場合にも、第２実施形態と同様な効果が得られることは勿論である。
【００８５】
なお、上述した第３実施形態では取付け溝５４を、ロック部材７５および第２連結棒３１の取付けに共用する構成としているが、本発明はこれに限らず、ロック部材７５を取付ける取付け溝と、第２連結棒３１を取付ける取付け溝とを別々に設けた構成としてもよい。
【００８６】
また、上述した第２、第３実施形態では主梁部材として、両側それぞれに上部凹溝、取付け溝、下部凹溝および載置部が形成されたものを用いているが、本発明はこれに限らない。例えば、幅方向に並設される主梁部材のうちの最外側に配置されるものにあっては、上述した上部凹溝、取付け溝、下部凹溝および載置部が片側のみに形成された主梁部材を使用することもできる。
【００８７】
また、上述した第２、第３実施形態では第１凹溝と第１係止部として、上部凹溝と上部係止部および下部凹溝と下部係止部の２組を上下に設けているが、本発明はこれに限らず、これら２組の一方のみを設けた構成としてもよい。或いは、更に３組以上を上下位置を異ならせて設けてもよい。
【００８８】
【発明の効果】
以上詳述したように、本発明による場合には、幅方向に隣り合う主梁部材の第１凹溝に副梁部材の第１係止部を係止させ、その係止状態を、ロック手段の機械的な変位により保持すると、幅方向に隣り合う主梁部材に両端が係止状態で副梁部材が取付けられる。よって、ビスを使用しないため、切り屑の発生が抑制され、クリーンルームに適用してもクリーンルームの清浄性を向上させることができ、しかもビス止め作業が要らず、隣り合う主梁部材の第１凹溝に副梁部材の第１係止部を係止してロック手段を機械的に変位させるだけで主梁部材と副梁部材の両者の連結ができるので、作業性の改善を図ることができる。
【図面の簡単な説明】
【図１】本発明の第１実施形態に係る天井パネル用梁構造の連結部分を示す断面図であ２る。
【図２】本発明の第１実施形態に係る天井パネル用梁構造の組立状態を説明するための図（斜視図）である。
【図３】本発明の第１実施形態に係る天井パネル用梁構造に用いられる主梁部材を示す斜視図である。
【図４】（ａ）は図３の主梁部材の左端面を示す側面図、（ｂ）はその主梁部材の下部部分Ａを拡大して示す側面図である。
【図５】本発明の第１実施形態に係る天井パネル用梁構造に用いられる副梁部材を示す斜視図である。
【図６】（ａ）は図５の副梁部材を示す正面図、（ｂ）はその右側面図である。
【図７】本発明の第１実施形態に係る天井パネル用梁構造に用いられるパネル支持片を示す斜視図である。
【図８】図７のパネル支持片の取付け方と各部寸法を示す図である。
【図９】本発明の天井パネル用梁構造に用いられる主梁部材をその長手方向に連結する状態の説明図（分解斜視図）である。
【図１０】本発明の第２実施形態に係る天井パネル用梁構造の連結部分を示す断面図である。
【図１１】本発明の第２実施形態の天井パネル用梁構造に用いる主梁部材を示す外観斜視図である。
【図１２】本発明の第２実施形態の天井パネル用梁構造に用いる副梁部材を示す外観斜視図である。
【図１３】（ａ）は本発明の第２実施形態の天井パネル用梁構造に用いる副梁部材を示す正面図、（ｂ）は副梁部材の右側面図である。
【図１４】本発明の第２実施形態の天井パネル用梁構造に用いるロック部材を示す外観斜視図である。
【図１５】本発明の第２実施形態に係る天井パネル用梁構造に用いられるロック部材の取付け方を説明するための図である。
【図１６】本発明の第２実施形態に係る天井パネル用梁構造に用いられるパネル支持片の取付け方を説明するための図である。
【図１７】本発明の第３実施形態に係る天井パネル用梁構造の連結部分を示す断面図である。
【図１８】図１７のＨ部分を拡大して示す図である。
【図１９】本発明の第３実施形態の天井パネル用梁構造に用いる主梁部材を示す外観斜視図である。
【図２０】本発明の第３実施形態の天井パネル用梁構造に用いる副梁部材を示す外観斜視図である。
【図２１】（ａ）は副梁部材を示す正面図、（ｂ）は副梁部材の右側面図である。
【図２２】（ａ）は本発明の第３実施形態の天井パネル用梁構造に用いるロック部材を示す正面図、（ｂ）はロック部材を示す左側面図である。
【図２３】本発明の第３実施形態の天井パネル用梁構造に用いるパネル支持片を示す斜視図である。
【図２４】本発明の第３実施形態のロック部材が副梁部材を押付けた状態を示す図である。
【図２５】従来の天井パネル用梁構造の組立て方を示す分解斜視図である。
【符号の説明】
１　天井パネル用梁構造
２　天井パネル
１０、５０、５０Ａ　主梁部材
１３　第１凹溝
１４　取付け溝
１５　第２凹溝
１６、５６　載置部
２０、６０、６０Ａ　副梁部材
２２ａ、２３ａ、６６ａ、６７ａ　下端
２６　係止部（第１係止部）
２７　第３凹溝
３０　連結棒（ロック手段）
３１　第２連結棒
４０、８０、８５　パネル支持片
５３　上部凹溝（第１凹溝）
５４　取付け溝（第４凹溝、第５凹溝）
５５　下部凹溝（第１凹溝）
６９Ａ　上部係止部（第１係止部）
６９Ｂ、６９Ｃ　下部係止部（第１係止部）
７０、７５　ロック部材[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a ceiling panel beam structure for supporting an edge portion of a ceiling panel used in a clean room or the like employed in a semiconductor manufacturing factory or the like.
[0002]
[Prior art]
The thing shown in FIG. 25 is known as the above-mentioned ceiling panel beam structure. This beam structure is configured by suspending a long beam member formed in the same cross-sectional shape via a suspending member having an upper end attached to a ceiling, and connecting the beams in a grid using various joints. ing.
[0003]
For example, in a case where another beam member 101 is abutted on one side of the beam member 100, a T-shaped joint 103 that is attached to the inside of another beam member 101 and a T-shaped joint 103 that is attached to both the outside and the outside is attached. Screw 104 is used to stop. Further, when another two beam members 101 and 106 are abutted on both sides in the middle of the beam member 105, the screw 104 is fixed using a joint fitting 102 and a cross joint 107.
[0004]
[Problems to be solved by the invention]
Therefore, according to the conventional beam structure, the use of a large number of screws is required for each of the above-described various joint portions, and also the work of adjusting the positions to be screwed is required. There is a demand for improved workability. In addition, when supporting the edge of the ceiling panel used in a clean room, screws are used to fix the edges, so that chips are generated innumerably, and not only do the chips fall on the floor of the clean room, but also the beam members and Because it remains attached to the joint members etc., even if cleaning is performed after the work is completed, small chips left in the corner of the room soar up during the manufacture of the semiconductor, or adhere to the beam members and joint members etc. It was difficult to keep the clean room in a clean state because the remaining chips fell.
[0005]
The present invention has been made in order to solve such problems of the related art, and can improve the workability, and can further suppress the generation of chips to improve the cleanliness. It is intended to provide a beam structure for use.
[0006]
[Means for Solving the Problems]
The beam structure for a ceiling panel of the present invention is a beam structure for a ceiling panel for supporting an edge portion of the ceiling panel, and is a long structure that is hung on a room ceiling and is juxtaposed at intervals in the width direction. A main beam member, and a sub-beam member whose both ends are connected to adjacent ones of the main beam member. The main beam member extends along at least one of both sides in the width direction along the longitudinal direction. , A first groove for locking an end of the sub beam member, and the sub beam member has a first locking portion at each of both ends for locking by entering the first groove. Further, a lock means is provided for holding, by mechanical displacement, a state in which the first locking portion enters the first groove and is locked.
[0007]
In the case of this invention beam structure, the first locking portion of the sub beam member is locked in the first groove of the main beam member adjacent in the width direction, and the locked state is determined by the mechanical displacement of the locking means. , The sub beam member is attached to the main beam member adjacent in the width direction with both ends locked. Here, the mechanical displacement refers to a displacement due to sliding or swinging. Therefore, since no screws are used, the generation of chips is suppressed, and the cleanliness of the clean room can be improved even when applied to a clean room, and further, no screw fixing work is required, and the first concave portion of the adjacent main beam member is not used. Since the main beam member and the sub beam member can be connected only by mechanically displacing the locking means by locking the first locking portion of the sub beam member in the groove, workability can be improved.
[0008]
In the beam structure for a ceiling panel according to the present invention, the first groove is open at the upper side, the first locking portion is formed in a hook shape that enters the first groove from above, and the locking means is mainly The upper end portion is engaged with an engaging portion provided above the sub beam member of the beam member, and the lower end portion is prevented from moving upward by swinging in this state. Can be.
[0009]
In this configuration, the hook-shaped member of the first locking portion of the sub beam member is inserted into the first groove of the main beam member having an upper opening from above, and the upper end of the locking means is connected to the main beam member. The lower end prevents the upward movement of the sub-beam member by engaging the engaging means provided at a position higher than the sub-beam member and swinging the lock means in that state, that is, the first concave groove The state where the locking portion is locked is locked.
[0010]
In the ceiling panel beam structure of the present invention, a plurality of the first concave grooves and the first locking portions may be provided with different heights.
[0011]
In this configuration, a plurality of first concave grooves and first locking portions are provided at different height positions, that is, the main beam member and the sub beam member are connected at a plurality of positions having different vertical positions. In addition, the auxiliary beam member is prevented from tilting, so that the connection between them is more reliably maintained.
[0012]
In the beam structure for a ceiling panel of the present invention, the main beam member has, on at least one of both sides in the width direction, a mounting portion on which an end of the sub beam member is mounted, and the sub beam is mounted on the mounting portion. When the end of the member is placed from above, one of the first locking portions of the sub-beam member is locked in the corresponding first groove of the main beam member, and at the same time, Can be configured to enter and lock the remaining corresponding first groove of the main beam member.
[0013]
In this configuration, when the end portion of the sub beam member is placed on the placement portion from above, one of the first concave grooves and one of the first locking portions are locked, and at the same time, the remaining The first concave groove and the remaining first locking portion are locked, so that workability can be improved.
[0014]
In the beam structure for a ceiling panel according to the present invention, the first concave groove is open at the upper side, and the first locking portion is formed in a hook shape to be locked by entering the first concave groove. The locking means is provided along at least one of both sides in the width direction of the main beam member along the longitudinal direction, a second concave groove having a side opening, and along the longitudinal direction of the sub beam member. It can be configured to have a connecting rod that is slidably mounted in the provided third concave groove and protrudes outward from an end of the sub beam member to enter the second concave groove.
[0015]
In this configuration, with the first locking portion of the sub beam member being locked in the first groove of the main beam member, the connecting rod attached to the third groove is slid, and each main beam member is slid. The sub beam member is connected to the main beam member by inserting a part (tip) of the connecting rod into the second concave groove opened to the side of the main beam member. Therefore, workability can be improved.
[0016]
In the beam structure for a ceiling panel of the present invention, the main beam member has, on at least one of both sides in the width direction, a mounting portion on which an end of the sub beam member is mounted, and the sub beam is mounted on the mounting portion. When the end portion of the member is placed from above, the locking portion of the sub beam member is locked by entering the first groove of the main beam member, and the third groove of the sub beam member is connected to the main beam member. Can be configured to have a height corresponding to the second concave groove.
[0017]
In this configuration, when the end of the sub beam member is placed on the mounting portion of the main beam member from above, the locking portion of the sub beam member enters the first groove of the main beam member and engages. Since both ends of the sub beam member are placed on the mounting portions of the adjacent main beam members from above, the sub beam members are placed in the first grooves opened above the main beam members. Of the main beam member and the sub beam member are connected to each other. Also, at the time of the connection, the height of the third groove of the sub beam member and the height of the second groove of the main beam member match, so that the connecting rod slidably attached to the third groove is attached to the main beam member. It is possible to easily insert the groove into the second concave groove, and workability is greatly improved.
[0018]
In the beam structure for a ceiling panel according to the present invention, a second groove is formed above the placing portion, and a first groove is formed on the second groove, and the second groove is a first groove. Rather, it may be provided at a position closer to the mounting portion.
[0019]
In this configuration, the distance between the two positions of the connecting portion of the second concave groove and the connecting rod and the first engaging portion and the engaging portion of the first concave groove, which are different from each other in the vertical direction. Can be made large, thereby more reliably preventing the inclination of the sub beam member.
[0020]
In the beam structure for a ceiling panel of the present invention, the lower end of the end of the sub beam member is cut out by the thickness of the mounting portion of the main beam member, and the end of the sub beam member is connected to the main beam member. In this state, the lower surface of the main beam member and the lower surface of the sub beam member can be configured to be flush.
[0021]
In the case of this configuration, the lower surface of the sub beam member connected to the main beam member and the lower surface of the main beam member can be flush with each other, and a beautiful beam structure without unevenness can be obtained. .
[0022]
In the beam structure for a ceiling panel according to the present invention, the length from the end of the portion where the lower end of the end portion of the sub beam member is cut off by the thickness of the mounting portion of the main beam member is equal to the length of the main beam member. It is possible to adopt a configuration in which the width is set to substantially match the width dimension of the mounting portion.
[0023]
In this configuration, in a state where the ends of the main beam member and the sub beam member are connected, the end of the mounting portion of the main beam member and the end of the cutout portion of the sub beam member substantially coincide with each other. Therefore, it is possible to make a state in which there is almost no gap between both ends. Therefore, when the ceiling panel is mounted using the mounting portion of the main beam member, it is possible to eliminate a gap where dust falls, and it is possible to significantly improve cleanliness of the clean room even when applied to a clean room. it can.
[0024]
In the beam structure for a ceiling panel according to the present invention, the main beam member has a fourth groove formed in at least one of both sides in the width direction along the longitudinal direction, and the second connecting rod is slidable in the fourth groove. Is attached, and the main beam members juxtaposed in the longitudinal direction are connected to each other via the second connecting rod.
[0025]
In this configuration, the end faces of the main beam members arranged side by side in the longitudinal direction are abutted with each other, and the second connecting rod slidably attached to the fourth groove is slid so that the fourth concave portions of both main beam members are slid. By placing one half and the other half of the second connecting rod in the groove, the main beam members can be arranged side by side in the longitudinal direction.
[0026]
In the beam structure for a ceiling panel of the present invention, the main beam member has a fifth concave groove formed in at least one of both sides in the width direction along the longitudinal direction, and the fifth concave groove has an arc shape, The locking means is formed by making the opening narrower than the inner deep part, and the locking means is provided with a mounting part having a substantially arc-shaped cross section, which is mounted along the edge on one end side, which is mounted on the fifth groove. The mounting portion has a radius of curvature substantially the same as the radius of curvature of the fifth groove, and a cutout portion is formed in a part of the outer periphery of the mounting portion for passing the opening along the longitudinal direction thereof. Configuration.
[0027]
In this configuration, the hook-like member of the first locking portion of the sub beam member is inserted into the first groove of the main beam member having an upper opening from above, and the mounting portion of the locking means is provided with a notch. By swinging the lock means in the fifth groove in a state substantially perpendicular to the opening, the lock means prevents the sub beam member from moving upward, that is, the locking portion engages with the first groove. Locks the stopped state.
[0028]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be specifically described.
[0029]
(1st Embodiment)
FIG. 1 is a sectional view showing a connection portion of a beam structure for a ceiling panel according to a first embodiment of the present invention, and FIG. 2 is a view (perspective view) for explaining an assembled state of the beam structure for a ceiling panel. is there. FIG. 2 shows one connecting portion.
[0030]
The ceiling panel beam structure 1 is used for the ceiling of a clean room, supports the edge of the ceiling panel 2, is a long structure suspended from the ceiling, and is spaced apart in the width direction. A main beam member 10 to be provided, a sub beam member 20 having both ends connected to adjacent members of the main beam member 10, and both ends of the sub beam member 20 slidably attached to the sub beam member 20. It has a connecting rod 30 as locking means used to lock the connection state between the main beam member 10 and the sub beam member 20 by projecting outward from the portion.
[0031]
3 is a perspective view showing the main beam member 10, FIG. 4 (a) is a side view showing the left end face of the main beam member 10 of FIG. 3, and FIG. 4 (b) shows a lower portion A of the main beam member 10. It is a side view which expands and shows.
[0032]
The main beam member 10 has a bilaterally symmetric cross-sectional shape shown in FIG. 4A over its entire length and has a flat and long surface with no unevenness at both longitudinal end surfaces, and is made of a metal such as aluminum, for example. It is manufactured by cutting after drawing or extruding. At the upper end of the main beam member 10, a mounting portion 11 having an upward opening is formed. On the lower side of the mounting portion 11, a first recess having an upper opening through a hanging portion 12 provided at the center in the width direction. Grooves 13 are formed on both sides in the width direction, and a mounting groove 14 having an obliquely downward opening is formed below each of the first concave grooves 13 to which a panel support piece 40 (see FIG. 1) is mounted. A second concave groove 15 having a depth in the width direction and having an open side is formed below the lower side of the sub-beam member 14. The mounting portion 16 on which the mounting is performed is formed to protrude (see FIG. 1). Further, between the mounting portions 16 on both sides in the width direction, there is provided a hollow portion 17 which is covered with a wall on all sides except for both ends in the longitudinal direction, and above a bottom surface 18 forming the hollow portion 17, A pair of opposing pieces 19 are formed. On the opposing surfaces of these opposing pieces 19, uneven portions 19a are formed with their heights shifted from each other (see FIG. 4 (b)). Is also a thin portion 18a. The thin portion 18a and the opposing pieces 19 function as screw stoppers as described later.
[0033]
The main beam member 10 is hung from the ceiling by inserting a nut 121 attached to the lower end of a rod-shaped member 120 having an upper end attached to the ceiling into the attachment portion 11 (see FIG. 1).
[0034]
5 is a perspective view showing the sub beam member 20, FIG. 6A is a front view showing the sub beam member 20, and FIG. 6B is a right side view thereof.
[0035]
The sub beam member 20 is made of metal such as aluminum, for example, and is manufactured by, for example, drawing or extruding, and then cutting the both end portions into an uneven shape, and is symmetrical in a side view and a front view. Specifically, as shown in FIG. 6 (b), it has a pair of side walls 22 and 23 which are separated in the width direction, and a ceiling plate portion 24 is stretched over an upper portion between the side walls 22 and 23. The lower ends of the side walls 22, 23 have a cross-sectional shape in which a bottom plate portion 25 is provided so as to protrude to both sides in the width direction. A locking portion 26 is provided as a first locking portion formed in a hook shape with a base end portion cut out. Further, the bottom plate portion 25 is cut off at both ends in the longitudinal direction with a notch length L3, and the lower ends 22a, 23a (corresponding to 21) at both ends in the longitudinal direction of both side walls 22, 23 are exposed. The lower ends 22a and 23a function as a mounting surface described later. Further, a third groove 27 is provided on each of the side walls 22 and 23 at a predetermined height position, that is, a height position corresponding to the second groove 15 so as to protrude inward. The third concave groove 27 is formed in an arc shape whose inner part is wider than the opening, and a cylindrical connecting rod 30 is slidable in the third concave groove 27 from the longitudinal direction. It is attached with a frictional force that does not fall off even if the beam member 20 is inclined.
[0036]
Next, the relevant items of each part of the main beam member 10 and each part of the sub beam member 20 suspended from the ceiling as described above will be described with reference to FIGS.
[0037]
The hook-shaped locking portion 26 of the sub beam member 20 is attached to the first concave groove 13 which is open above the main beam member 10 from above. The first concave groove 13 is formed in a tapered shape whose opening side is wider than the inner deep side, and the lower side of the locking portion 26 is formed in a reverse tapered shape with respect to the first concave groove 13. The state of attachment to the concave groove 13 is set so as to be a line contact instead of a point contact. That is, when the upper side of the end of the sub-beam member 20 is hit downward with a hammer or the like, the locking portion 26 is moved to the second position via the tapered surface 13a of the first concave groove 13 and the tapered surface 26a of the locking portion 26. It is possible to enter the inside of one concave groove 13.
[0038]
In a state where the locking portion 26 is attached to the first concave groove 13, the lower ends 22 a and 23 a of the sub beam member 20 are mounted on the mounting portion 16 of the main beam member 10 and function as a mounting surface. The mounting portion 16 is formed to have the same thickness as the bottom plate portion 25. When the lower ends 22 a and 23 a are mounted on the mounting portion 16, the lower surfaces of the mounting portion 16 and the bottom plate portion 25 are flush. Further, the longitudinal lengths of the lower ends 22a and 23a, that is, the cutout length L3 are set so as to substantially match the widthwise length L4 of the mounting portion 16 (see FIG. 4A). When the lower ends 22 a and 23 a are placed on the placing portion 16, there is almost no gap between the placing portion 16 and the bottom plate portion 25.
[0039]
In addition, when the locking portion 26 is attached to the first groove 13, the height of the second groove 15 of the main beam member 10 and the height of the third groove 27 of the sub beam member 20 are the same. The inner diameter of the second groove 15 is substantially the same as the outer diameter of the connecting rod 30. The connecting rod 30 attached to the third concave groove 27 is slid by applying a strong force to the distal end of the connecting rod 30 into the second concave groove 15. 15 does not escape. The connecting rod 30 and the second groove 15 constitute locking means for preventing the locking portion 26 from coming out of the first groove 13. The strong force corresponds to, for example, a force when a metal member for hitting is inserted from the opening of the third groove 27 to abut against the base end of the connecting rod 30 and hit the metal member with a hammer or the like.
[0040]
Therefore, when the locking portions 26 on both sides of the sub beam member 20 are attached to the first concave grooves 13 of the two main beam members 10 suspended from the ceiling in the width direction in a state of being arranged in the width direction, the accompanying, The heights of the second groove 15 and the third groove 27 are the same. In addition, the lower surfaces of the receiver 16 and the bottom plate 25 are flush with each other, and there is almost no gap between the receiver 16 and the bottom plate 25. In the case where the engagement of the locking portion 26 into the first groove 13 is shallow, for example, when the distance between the main beam members 10 arranged in the width direction with respect to the length dimension of the sub beam member 20 is slightly longer. By hitting with a hammer or the like, the heights of the second groove 15 and the third groove 27 are made the same. Thereafter, when the connecting rod 30 is manually slid, the distal end of the connecting rod 30 is press-fitted into the second groove 15 and the connecting operation is completed.
[0041]
As described above, in the case of the ceiling panel beam structure of the first embodiment, since screws are not used for connecting the main beam member 10 and the sub beam member 20, the generation of chips is suppressed, and the invention is applied to a clean room. The cleanliness of the clean room can be improved, and screwing work is not required, and the connecting portion 30 of the auxiliary beam member 20 is locked by locking the locking portion 26 of the sub beam member 20 in the first groove 13 of the adjacent main beam member 10. Since the main beam member 10 and the sub beam member 20 can be connected only by sliding, the workability can be improved. Further, the main beam member 10 and the sub beam member 20 are connected at two different positions in the vertical direction between the connecting portion between the second groove 15 and the connecting rod 30 and the locking portion 26 and the locking portion between the first groove 13. Accordingly, the tilting of the sub beam member 20 is prevented, whereby the connection between the main beam member 10 and the sub beam member 20 is more reliably maintained.
[0042]
Further, in the first embodiment, when the lower ends 22a and 23a of the sub beam member 20 are placed on the placement portion 16 of the main beam member 10 from above, the locking portions 26 of the sub beam member 20 10, the lower ends 22a and 23a of both ends of the sub beam member 20 are placed from above on the mounting portions 16 of the adjacent main beam members 10. The locking portion 26 of the sub beam member 20 naturally enters and locks the first groove 13 opened above each main beam member 10 to connect both the main beam member 10 and the sub beam member 20. This also improves workability. Further, at the time of the connection, the height of the third groove 27 of the sub beam member 20 and the height of the second groove 15 of the main beam member 10 coincide with each other. The connecting rod 30 slidably attached to the main beam member 10 can be easily inserted into the second groove 15 of the main beam member 10, and the workability can be greatly improved.
[0043]
Further, in the first embodiment, since the second groove 15 is provided at a position close to the mounting portion 16, the connecting portion between the second groove 15 and the connecting rod 30 is different from the connecting portion in the vertical direction. It is possible to increase the distance between the locking portion 26 and the position where the locking portion 26 is locked to the first concave groove 13, whereby the tilting of the sub beam member 20 can be more reliably prevented.
[0044]
Further, in the first embodiment, the mounting portion 16 and the bottom plate portion 25 are formed to have substantially the same thickness, the ends of the bottom plate portion 25 are cut out, and the lower ends 22 a of the side walls 22 and 23 of the sub beam member 20 are formed. Since the reference numeral 23a functions as a mounting surface, the lower surface of the mounting portion 16 of the main beam member 10 and the bottom plate portion 25 of the auxiliary beam member 20 are connected in a state where the end of the sub beam member 20 is connected to the main beam member 10. The lower surface can be flush with the lower surface, and a beautiful beam structure without unevenness can be obtained.
[0045]
As shown in FIG. 7, the panel support piece 40 is of a long shape having a constant width, and a mounting portion 41 having a substantially arc-shaped cross section is formed at one end of the long side. A cutout portion 42 is formed along the longitudinal direction. On the other hand, as shown in FIG. 8, the mounting groove 14 to which the panel supporting piece 40 is mounted is formed in an arc shape in which the opening 14a is obliquely downward and the inner depth is wider than the opening 14a.
[0046]
As shown by the two-dot chain line on the left side of FIG. 8, the panel support piece 40 is set in the upright posture B with the mounting portion 41 on the lower side, and It is moved to insert the mounting portion 41 into the opening 14a. In the upright posture B, the notch 42 has a center O of curvature of the mounting portion 41 and the notch 42 with respect to a line segment connecting both edges in the width direction of the opening forming the opening 14 a of the mounting groove 14. Are formed so that the diameter directions connecting them are substantially parallel. Then, the panel support piece 40 is inserted into the opening 14a such that the diametrical direction connecting the notch 42 and the center of curvature O is substantially parallel to the direction of a line connecting both edges of the opening 14a. That is, the diameter L1 passing through the cutout portion 42 and the center of curvature O is set shorter than the other portions and slightly shorter than the width L2 of the opening 14a, so that the opening 14a can pass through. I have.
[0047]
Thereafter, the panel supporting piece 40 is pushed downward (in the direction of the arrow) on the side opposite to the mounting portion 41 and is swung so as to be in the horizontal posture C, so that the mounting portion 41 is mounted in the mounting groove 14 in a state where it is prevented from coming off. In this horizontal posture C, the notch 42 is formed in the mounting portion 41 so as to be located outside the opening 14a (exposed outside). That is, the mounting portion 41 is prevented from falling out of the mounting groove 14, and the contact area between the mounting portion 41 having an arc-shaped cross section other than the notch portion 42 and the mounting groove 14 of the hollow having the arc-shaped cross section is increased. This is to increase the strength with which the mounting groove 14 can hold the mounting 41.
[0048]
Then, the edge of the ceiling panel 2 is placed on the panel supporting piece 40 in the horizontal posture C as shown in FIG. 1 and fixed with screws or the like, so that the ceiling panel 2 for the ceiling panel according to the present embodiment is formed. Supported by beam structure.
[0049]
Further, the above-described thin portion 18a and both opposing pieces 19 function as screw fixing portions as described below. That is, when the tip of the screw is rotated while being pressed by a hand tool from the outside of the thin portion 18a, the thin portion 18a is broken by the screw, and a circular hole through which the screw is formed is formed. The screw thread of the screw is engaged with the uneven portion 19a formed at a shifted height position, and the screw is fastened. Therefore, it functions as a screw stopper. A light source such as a fluorescent lamp, a partition member, and the like are fixed by a screw attached to the screw stopper. As described above, a screw is used when fixing the ceiling panel 2 on the panel supporting piece 40 and when fixing the light source or the partition member or the like to the screw fixing portion. Since no screws are used in the beam structure which is the object of the above, the number is slightly smaller than the conventional one. In particular, when a light source or a partition member is fixed to the screwing portion, the screwing portion is provided inside the hollow portion 17 which is covered on four sides with a wall. Since the chips are covered, the chips generated at the time of screwing are held in the hollow portion 17 without falling out, so that the cleanliness of the clean room can be improved.
[0050]
FIG. 9 is an explanatory view (exploded perspective view) of a state in which the main beam member 10 is connected in the longitudinal direction. A second columnar connecting rod 31 is slidably mounted on the end of the mounting groove 14 to which the panel supporting piece 40 is mounted, and the end faces of the two main beam members 10 are abutted with each other, and the connecting rod described above. Similarly to the case 30, one side of the second connecting rod 31 is pressed into the mounting groove 14 of one 10A of the two main beam members 10 by sliding with a strong force using a hammer or the like, and the other side of the second connecting rod 31 is connected to the other side. Into the mounting groove 14 of the main beam member 10B. Thereby, the main beam member 10 can be connected in the longitudinal direction. Since the second connecting rods 31 are attached only to both ends of the main beam member 10, they do not hinder the mounting of the panel supporting piece 40 at the intermediate portion of the main beam member 10. Further, when the connection strength is to be improved, a connection piece 32 having a U-shaped cross section is arranged on the mounting portion 11 having an open upper portion so as to straddle the two main beam members 10, and the connection is performed. A nut 34 is arranged inside each of the mounting holes 33 previously formed at two places of the piece 32, and a bolt 35 is screwed to the nut 34 from above the connecting piece 32, whereby the two main beam members 10 </ b> A, A stronger connection of 10B is possible. By such a connection, a large number of main beam members 10 are connected.
[0051]
In the above-described first embodiment, a main beam member having a first concave groove, a mounting groove, a second concave groove, and a mounting portion formed on both sides is used, but the present invention is not limited to this. Absent. For example, in the outermost main beam member arranged in the width direction, the above-described first groove, mounting groove, second groove, and mounting portion are formed on only one side. It is also possible to use a main beam member that has been set.
[0052]
In the first embodiment described above, the third groove in which the connecting rod is slidably mounted is provided over the entire length of the sub beam member. However, the present invention is not limited to this, and only the both ends of the sub beam member are connected. You may provide in the range which enables a stick to slide.
[0053]
(2nd Embodiment)
FIG. 10 is a cross-sectional view showing a connection portion of a ceiling panel beam structure according to a second embodiment of the present invention, and FIG. 11 is an external perspective view showing a main beam member used for the ceiling panel beam structure of the second embodiment. 12, FIG. 12 is a perspective view showing the appearance of the sub beam member, FIG. 13 (a) is a front view showing the sub beam member, FIG. 13 (b) is a right side view of the sub beam member, and FIG. It is an external appearance perspective view which shows the lock member used for the beam structure for ceiling panels.
[0054]
The beam structure for a ceiling panel includes a main beam member 50 arranged side by side at an interval in the width direction, a sub beam member 60 having both ends connected to adjacent ones of the main beam member 50, An L-shaped section as a locking means which is mounted between the upper part of the member 50 and the upper part of the sub beam member 60 by swinging and is used to lock the coupling state between the main beam member 50 and the sub beam member 60. And a lock member 70.
[0055]
The main beam member 50 has a symmetrical cross-sectional shape shown in FIG. 11 over its entire length and has a flat and long shape with no irregularities at both ends in the longitudinal direction. For example, the main beam member 50 is made of metal such as aluminum. It is manufactured by cutting after extrusion. At the upper end of the main beam member 50, a mounting portion 51 having an upper opening is formed, and a first recess having an upper opening through a hanging portion 52 provided at the center in the width direction is formed below the mounting portion 51. Upper concave grooves 53 as grooves are formed on both sides in the width direction, and under each upper concave groove 53, a panel supporting piece 80 (see FIG. 10) is mounted. In the embodiment, a fourth concave groove 54 is formed, and a hanging portion 52a and a lower concave groove 55 as a first concave groove which is open upward are formed below each mounting groove 54, and each lower concave groove 55 is formed. A mounting portion 56 on which the end portion 61 of the sub-beam member 60 and the ceiling panel 2 (see FIG. 10) are mounted protrudes from the lower end portion on the lower side. Further, between the mounting portions 56 on both sides in the width direction, there are provided hollow portions 57 each of which is covered with a wall except for both ends in the longitudinal direction. The lower portion of the cavity 57 is a thin portion 58a that is thinner than other portions. The thin portion 58a functions as a screw stopper similar to the thin portion 18a of the first embodiment. An engagement portion 51a protruding downward is formed below both ends in the width direction of the attachment portion 51, and a lock engagement portion 52b is formed on both sides in the width direction of the hanging portion 52a. .
[0056]
As in the first embodiment, the main beam member 50 is suspended from the ceiling by inserting a nut 121 attached to a lower end portion of a rod-shaped member 120 having an upper end portion attached to the ceiling into the attachment portion 51 (see FIG. 10). ). Further, the connection of the main beam member 50 in the longitudinal direction can be performed by attaching the second connection rod 31 to the attachment groove 54 as shown in FIG. 9 as in the first embodiment.
[0057]
The sub beam member 60 is made of a metal such as aluminum, for example, and is manufactured by, for example, drawing or extruding, and then cutting the both ends into an uneven shape, and is symmetrical in a side view and a front view. Specifically, as shown in FIGS. 12 and 13, the upper side has a pair of side walls 63, 63 at both ends in the width direction of the ceiling plate portion 62, and a hanging portion 64 is located below the ceiling plate portion 62. A middle ceiling plate portion 65 is provided below the hanging portion 64, and side walls 66 and 67 are formed below both ends in the width direction of the middle ceiling plate portion 65. Has a cross-sectional shape in which a bottom plate portion 68 is provided so as to protrude to both sides in the width direction. A middle portion in the height direction at both ends in the longitudinal direction of the hanging portion 64 is cut out, and a top end of the notch portion 64a is formed as a first locking portion having a base end portion cut out upward and formed in a hook shape. Is provided. The bottom plate portion 68 has both ends in the longitudinal direction cut out at the notch length L5, and lower ends 66a, 67a (corresponding to 61) at both ends in the longitudinal direction of both side walls 66, 67 are exposed. The lower ends 66a and 67a function as a mounting surface described later. At the longitudinal ends of the lower ends 66a, 67a, there are provided lower locking portions 69B, 69C as first locking portions which are cut out upward so as to open the lower side and are formed in a hook shape. That is, in the second embodiment, the first locking portions are provided at two upper and lower positions with different heights.
[0058]
As shown in FIG. 14, the lock member 70 is formed in a substantially L-shaped cross section, and the upper end 71 is formed in a bifurcated shape to enter the engaging portion 51a of the main beam member 50. Is provided with an engaging portion 73 projecting downward. As shown in FIG. 10, the lock member 70 engages the upper end 71 with the engaging portion 51 a to prevent the ceiling plate 62 of the sub beam member 60 from moving upward at the lower end 72. The length L8 from the upper end portion 71 to the lower end portion 72 is set to a predetermined value, and the engaging portion 73 is a gap formed between the hanging portion 52 and the upper locking portion 69A as described later. It enters L7.
[0059]
Next, a description will be given, with reference to FIG. 10, of the related items of each part of the main beam member 50 and each part of the sub beam member 60 suspended from the ceiling as described above.
[0060]
The hook-shaped upper locking portion 69 </ b> A of the sub beam member 60 is attached to the upper concave groove 53 which is open above the main beam member 50 from above. The upper concave groove 53 is formed in a tapered shape in which the opening side is wider than the inner deep side, and the lower side of the upper locking portion 69A is formed in a reverse taper shape with the upper concave groove 53, and the upper concave portion of the upper locking portion 69A is formed. The state of attachment to the groove 53 is set so as to be a line contact instead of a point contact. In other words, when the upper side of the end of the sub beam member 60 is hit downward with a hammer or the like, the upper locking portion 69A is formed via the tapered surface 69Aa of the upper locking portion 69A and the tapered surface 53a of the upper concave groove 53. Can penetrate deeper into the interior.
[0061]
When the upper locking portion 69A is attached to the upper groove 53, at the same time, the hook-shaped lower locking portions 69B and 69C of the sub-beam member 60 are connected to the lower groove where the upper portion of the main beam member 50 is opened. 55 are attached from above to two places. The lower groove 55 is formed in a tapered shape in which the opening side is wider than the inner depth side, and the lower side of the lower locking portions 69B and 69C is formed in a reverse taper shape with the lower groove 55, and the lower locking portion 69B, The attachment state of the 69C to the lower groove 55 is set so as to be in line contact. That is, when the upper side of the end of the sub beam member 60 is hit downward with a hammer or the like, the lower portion is formed via the tapered surface 55a of the lower concave groove 55 and the tapered surfaces 69Ba, 69Ca of the lower locking portions 69B, 69C. The locking portions 69B and 69C can enter into the inside.
[0062]
Further, as shown in FIG. 10, the lower locking portions 69B and 69C are in contact with or close to the side wall 57a forming the hollow portion 57, and the upper locking portion 69A has a gap between the lower locking portion 69A and the hanging portion 52. L7 is formed. The gap L7 is formed due to a difference in width dimension between the hanging portion 52 and the hollow portion 57.
[0063]
Further, in a state where the upper locking portion 69A is attached to the upper concave groove 53, the lower ends 66a and 67a of the sub beam member 60 are mounted on the mounting portion 56 of the main beam member 50 and function as a mounting surface. The mounting portion 56 is formed to have the same thickness as the bottom plate portion 68. When the lower ends 66a and 67a are mounted on the mounting portion 56, the lower surfaces of the mounting portion 56 and the bottom plate portion 68 are flush. The longitudinal lengths of the lower ends 66a and 67a, that is, the cutout lengths L5 are set so as to match the widthwise lengths L6 (see FIG. 10) of the mounting portion 56, and the lower ends 66a and 67a. Is placed on the receiver 56, there is almost no gap between the receiver 56 and the bottom plate 68.
[0064]
When the upper locking portion 69A is attached to the upper concave groove 53, the distance from the engaging portion 51a of the main beam member 50 to the ceiling plate portion 62 of the sub beam member 60 is equal to the length L8 of the locking member 70. And the lock member 70 is mounted as follows. That is, as shown in FIG. 15, the upper end portion 71 of the lock member 70 is engaged with the engaging portion 51a, and the lower engaging portion 73 is attached so as to abut on the ceiling plate portion 62. Then, the lower end side of the lock member 70 is hit with a hammer or the like as shown by a white arrow, and the engaging portion 73 is inserted into the gap L7. As a result, the upper end portion 71 and the engaging portion 73 are fixed to prevent the lock member 70 from coming off, and the connection state between the sub beam member 60 and the main beam member 50 to which the sub beam member 60 has been moved upward by the fixing of the locking member 70. Prevents unconnected state. That is, the state where the upper locking portion 69A is connected to the upper concave groove 53 and the state where the lower locking portions 69B and 69C are connected to the lower concave groove 55 are locked.
[0065]
Therefore, when the upper locking portion 69A of the sub beam member 60 is attached to the upper concave groove 53 of the two main beam members 50 suspended from the ceiling in the width direction in a state of being arranged side by side, the lower concave portion is accordingly attached. The lower locking portions 69B and 69C are attached to the grooves 55. In addition, the lower surfaces of the mounting portion 56 and the bottom plate portion 68 are flush with each other, and there is almost no gap between the mounting portion 56 and the bottom plate portion 68. Further, the engagement portion 51a of the main beam member 50 and the auxiliary beam The distance between the member 60 and the ceiling plate 62 is substantially equal to the length L8 of the lock member 70. When the upper locking portion 69A enters the upper groove 53 shallowly, for example, the distance between the main beam members arranged side by side in the width direction with respect to the length dimension of the sub beam member 60 is slightly longer. In this case, the upper locking portion 69A is inserted into the inner depth of the upper groove 53 by hitting with a hammer or the like. This also occurs simultaneously between the lower engaging portions 69B and 69C and the lower groove 55. Thereafter, the upper end portion 71 of the lock member 70 is engaged with the engagement portion 51a, and the lower engagement portion 73 is attached so as to be in contact with the ceiling plate portion 62. When the lock member 70 is rocked by hitting with a hammer or the like, and the engagement portion 73 is inserted into the gap L7 to fix the lock member 70, the coupling operation is completed.
[0066]
As described above, in the case of the ceiling panel beam structure of the second embodiment, since screws are not used for connecting the main beam member 50 and the sub beam member 60, generation of chips is suppressed, and the invention is applied to a clean room. The cleanliness of the clean room can be improved, and screwing work is not required. The upper locking portion 69A of the sub beam member 60 is locked in the upper groove 53 of the adjacent main beam member 50, and the lower groove 55 The main beam member 50 and the sub beam member 60 can be connected only by locking the lower locking portions 69B and 69C and then rocking the lock member 70, thereby improving workability. Further, the main beam member 50 and the sub beam are provided at two different positions in the vertical direction between the lower groove 55 and the lower locking portions 69B and 69C, and the upper locking portion 69A and the upper groove 53. Since the members 60 are connected, the auxiliary beam member 60 is prevented from tilting, whereby the connected state of both the main beam member 50 and the auxiliary beam member 60 is more reliably maintained.
[0067]
Further, in the second embodiment, when the lower ends 66a, 67a of the sub beam member 60 are placed on the placement portion 56 of the main beam member 50 from above, the upper locking portion 69A of the sub beam member 60 is The lower ends 66a and 67a of both ends of the sub beam member 60 are placed from above in the placement portion 56 of the adjacent main beam member 50 because they are locked by entering into the upper concave groove 53 of the member 50. The upper locking portion 69A and the lower locking portions 69B and 69C of the sub beam member 60 naturally enter and lock into the upper groove 53 and the lower groove 55 opened above each main beam member 50, Both the main beam member 50 and the sub beam member 60 can be connected, which also improves workability.
[0068]
In the second embodiment, since the lower groove 55 is provided at a position closer to the mounting portion 56 than the upper groove 53, the locking portion between the lower groove 55 and the lower locking portions 69B and 69C is provided. The distance between the upper locking portion 69A and the locking portion with the upper groove 53 of the upper locking portion 69A, which is different from the vertical position, can be increased, thereby tilting the sub beam member 60. Can be more reliably prevented.
[0069]
Further, in the second embodiment, the mounting portion 56 and the bottom plate portion 68 are formed to have the same thickness, the ends of the bottom plate portion 68 are cut out, and the lower ends 66a, 67a of both side walls 66, 67 of the sub beam member 60. Functions as a mounting surface, the lower surface of the mounting portion 56 of the main beam member 50 and the lower surface of the bottom plate portion 68 of the auxiliary beam member 60 in a state where the end of the sub beam member 60 is connected to the main beam member 50. Can be made flush with each other, and a beautiful beam structure without unevenness can be obtained.
[0070]
As shown in FIGS. 10 and 16, the panel support piece 80 is a long one having an L-shaped cross section, and has an attachment portion 81 having a substantially arc-shaped cross section at one end (upper side in the figure). A notch 82 is formed in the outer peripheral portion of the mounting portion 81 along the longitudinal direction. Further, a hook portion 83 for fixing is provided on the outer side opposite to the bending direction. On the other hand, as shown in FIG. 16, the mounting groove 54 to which the panel supporting piece 80 is mounted is formed in an arc shape in which the opening 54a is obliquely downward and the inner depth is wider than the opening 54a.
[0071]
As shown by a dashed line in FIG. 16, the panel supporting piece 80 is mounted in the mounting groove 54 with the side opposite to the mounting portion 81 of the panel supporting piece 80 facing upward, and the panel supporting piece 80 is set in the upright posture E. Is moved obliquely upward F to insert the mounting portion 81 into the opening 54a. At the time of the upright posture E, the notch 82 is formed by the center of curvature O of the mounting portion 81 and the notch 82 with respect to the direction of a line connecting both edges in the opening width direction forming the opening 54 a of the mounting groove 54. Are formed so that the diameter directions connecting them are substantially parallel. Then, the panel support piece 80 is inserted into the opening 54a such that the diameter direction connecting the notch 82 and the center of curvature O is substantially parallel to the direction of a line connecting both edges of the opening 54a. That is, the diameter L9 passing through the notch 82 and the center of curvature O is set to be shorter than the other portions and slightly shorter than the width L10 of the opening 54a, and can pass through the opening 54a. I have.
[0072]
Thereafter, the panel supporting piece 80 is pushed downward (in the direction of the arrow) on the side opposite to the mounting portion 81 and is swung so as to be in the horizontal posture G, whereby the mounting portion 81 is mounted in the mounting groove 54 in a state where it is prevented from coming off. The horizontal posture G is maintained by locking the hook-shaped portion 83 to the lock locking portion 52b. In the horizontal posture G, the notch 82 is formed in the mounting portion 81 so as to be located outside (exposed outside) the opening 54a. That is, the mounting portion 81 is prevented from falling out of the mounting groove 54, and the contact area between the mounting portion 81 having an arc-shaped cross-section other than the notch portion 82 and the mounting groove 54 of the cavity having the arc-shaped cross-section is increased. This is to increase the strength with which the mounting groove 54 can hold 81.
[0073]
Then, as shown in FIG. 10, the panel support piece 80 in the horizontal posture G presses the edge of the ceiling panel 2 arranged on the mounting portion 56 and the bottom plate portion 68 from above, The ceiling panel 2 is supported by the ceiling panel beam structure of the present embodiment.
[0074]
(Third embodiment)
In the above-described second embodiment, the panel supporting piece 80 is mounted in the mounting groove 54 (see FIG. 10), and the panel 2 is supported by the panel supporting piece 80. However, in the third embodiment, the mounting groove 54 is formed. The lock member and the panel support piece are configured to be used by utilizing.
[0075]
FIG. 17 is a cross-sectional view showing a connecting portion of the beam structure for a ceiling panel according to the third embodiment of the present invention, FIG. 18 is an enlarged view of a portion H in FIG. 17, and FIG. 20 is an external perspective view showing a main beam member used for a ceiling panel beam structure, FIG. 20 is an external perspective view showing a sub beam member, FIG. 21 (a) is a front view showing a sub beam member, and FIG. FIG. 22A is a front view showing a lock member used in the ceiling panel beam structure of the third embodiment, FIG. 22B is a left side view showing the lock member, and FIG. It is a front view which shows the panel support piece used for the beam structure for ceiling panels of 3rd Embodiment.
[0076]
In the main beam member 50A of the present embodiment, the lock locking portions 52b provided on the hanging portion 52a of the main beam member 50 of the second embodiment are omitted, and the lock locking portions are provided on both sides in the width direction on the upper surface of the cavity 57. 52b 'is provided, and the other portions have the same configuration as the main beam member 50 of the second embodiment (see FIGS. 17 to 19). The connection between the main beam members 50A is performed in the same manner as in the second embodiment.
[0077]
The sub beam member 60A in the present embodiment has a substantially rectangular notch 64a provided in the hanging portion 64 of the sub beam member 60 of the second embodiment, whereas the lower side has a generally triangular shape. Except for the shape of the cutout portion 64a ', the other portions are the same as those of the sub beam member 60 of the second embodiment (see FIGS. 20 and 21).
[0078]
Furthermore, in the third embodiment, a lock member 75 is attached to a mounting groove (fifth concave groove in the third embodiment) 54 of the main beam member 50A at a position connecting the sub beam member 60A, and the panel 2 is mounted. The panel supporting piece 85 is attached to the supporting position. In FIG. 17, a lock member 75 is mounted in the mounting groove 54 on one side (right side in the figure) of the main beam member 50A, and a panel support piece 85 is mounted in the mounting groove 54 on the other side (left side in the figure) of the main beam member 50A. However, the mounting position of the lock member 75 and the panel support piece 85 is rectangular with two main beam members 50A arranged side by side and two adjacent sub beam members 60A having both ends connected thereto. Since the panel 2 is disposed in the portion surrounded by the circles, the positions are different.
[0079]
As shown in FIG. 22, the lock member 75 is of a long shape having an L-shaped cross section, and has a mounting portion 76 having a substantially arc-shaped cross section at one end side (upper side in the drawing), and an outer peripheral portion of the mounting portion 76. Is formed with a notch 77 along the longitudinal direction. Note that the diameter L9 passing through the notch 77 and the center of curvature O is set shorter than the other portions and is set slightly shorter than the width L10 (see FIG. 17) of the opening 54a. Is possible.
[0080]
Further, a hook-like portion 78 for fixing is provided on the other end side (the lower side in the figure) of the lock means 75, and an escape groove 79 is formed at the center in the length direction. The escape groove 79 is provided to avoid contact with the lower side 64b of the cutout 64a '(see FIGS. 20 and 24). On the other hand, as shown in FIG. 17, the mounting groove 54 to which the lock member 75 is mounted is formed in an arc shape in which the opening 54a is obliquely downward and the inner depth is wider than the opening 54a.
[0081]
The attachment of the lock member 75 to the attachment groove 54 is performed at the place where the ends of the sub-beam members 60A are connected in the same manner as the panel support piece 80 in the second embodiment, and as shown by the two-dot chain line. Can be Thereafter, the lock member 75 is swung so that the lower end thereof approaches the main beam member 50A, and the hook-like portion 78 is locked to the lock lock portion 52b 'as shown by a solid line (see FIG. 18). Thereby, as shown in FIG. 24, the lower end of the lock member 75 presses the middle ceiling plate 65 at the end of the sub beam member 60 </ b> A downward, and the lower side 64 b enters the escape groove 79. As a result, the lock member 75 prevents the sub beam member 60A from moving upward, that is, locks the state where the locking portions 69A, 69B, 69C are locked in the first concave grooves 53, 55, and Beam member 60A is connected to main beam member 50A.
[0082]
As shown in FIG. 23, the panel support piece 85 has a long section with an L-shaped cross section, and has a mounting section 86 having a substantially arc-shaped cross section at one end (upper side in the figure). Are formed with a notch 87 along the longitudinal direction. Note that the diameter L9 passing through the notch 87 and the center of curvature O is set shorter than the other portions and slightly shorter than the width L10 of the opening 54a (see FIG. 17). Is possible. Further, a panel pressing portion 88 is formed in the bending direction, and a hook-like portion 89 for fixing is provided on the opposite side to the bending direction.
[0083]
The panel supporting piece 85 is provided in the mounting groove 54 at a location where each end of two adjacent sub beam members 60A is not connected to the main beam member 50A. By being attached in the same manner (however, the hook-like portion 89 is locked to the lock locking portion 52b 'as shown in FIG. 18), the mounting portion 56 and the bottom plate portion 68 are mounted as shown in FIG. The edge of the ceiling panel 2 arranged at is pressed from above. Thus, the ceiling panel 2 is supported by the ceiling panel beam structure of the present embodiment.
[0084]
Therefore, in the case of the third embodiment, the same effects as those of the second embodiment can be obtained.
[0085]
In the third embodiment described above, the mounting groove 54 is commonly used for mounting the lock member 75 and the second connecting rod 31. However, the present invention is not limited to this. A configuration in which a mounting groove for mounting the second connecting rod 31 is separately provided may be adopted.
[0086]
In the above-described second and third embodiments, the main beam member having the upper concave groove, the mounting groove, the lower concave groove, and the mounting portion formed on both sides is used. Not exclusively. For example, in the outermost one of the main beam members arranged side by side in the width direction, the above-described upper concave groove, mounting groove, lower concave groove, and mounting portion are formed only on one side. Main beam members can also be used.
[0087]
In the above-described second and third embodiments, two pairs of an upper groove and an upper locking portion and a lower groove and a lower locking portion are provided vertically as the first groove and the first locking portion. However, the present invention is not limited to this, and a configuration in which only one of these two sets is provided may be adopted. Alternatively, three or more sets may be provided with different vertical positions.
[0088]
【The invention's effect】
As described above in detail, in the case of the present invention, the first locking portion of the sub beam member is locked in the first groove of the main beam member adjacent in the width direction, and the locking state is determined by the locking means. When the main beam member is held by the mechanical displacement of the sub beam member, the sub beam member is attached to the main beam member adjacent in the width direction with both ends locked. Therefore, since no screws are used, the generation of chips is suppressed, and the cleanliness of the clean room can be improved even when applied to a clean room. Moreover, the screwing work is not required, and the first concave portion of the adjacent main beam member is not used. Since the main beam member and the sub beam member can be connected only by mechanically displacing the locking means by locking the first locking portion of the sub beam member in the groove, workability can be improved. .
[Brief description of the drawings]
FIG. 1 is a cross-sectional view illustrating a connection portion of a beam structure for a ceiling panel according to a first embodiment of the present invention.
FIG. 2 is a view (perspective view) for explaining an assembled state of the ceiling panel beam structure according to the first embodiment of the present invention.
FIG. 3 is a perspective view showing a main beam member used for the ceiling panel beam structure according to the first embodiment of the present invention.
4A is a side view showing a left end surface of the main beam member of FIG. 3, and FIG. 4B is an enlarged side view showing a lower portion A of the main beam member.
FIG. 5 is a perspective view showing a sub-beam member used for the ceiling panel beam structure according to the first embodiment of the present invention.
6 (a) is a front view showing a sub beam member of FIG. 5, and FIG. 6 (b) is a right side view thereof.
FIG. 7 is a perspective view showing a panel support piece used for the ceiling panel beam structure according to the first embodiment of the present invention.
8 is a diagram showing how to attach the panel support pieces of FIG. 7 and dimensions of each part.
FIG. 9 is an explanatory view (exploded perspective view) of a state in which a main beam member used in the ceiling panel beam structure of the present invention is connected in the longitudinal direction.
FIG. 10 is a cross-sectional view showing a connection part of a beam structure for a ceiling panel according to a second embodiment of the present invention.
FIG. 11 is an external perspective view showing a main beam member used in a ceiling panel beam structure according to a second embodiment of the present invention.
FIG. 12 is an external perspective view showing a sub beam member used for a ceiling panel beam structure according to a second embodiment of the present invention.
FIG. 13 (a) is a front view showing a sub beam member used for a ceiling panel beam structure according to a second embodiment of the present invention, and FIG. 13 (b) is a right side view of the sub beam member.
FIG. 14 is an external perspective view showing a lock member used in a ceiling panel beam structure according to a second embodiment of the present invention.
FIG. 15 is a view for explaining how to attach a lock member used in a ceiling panel beam structure according to a second embodiment of the present invention.
FIG. 16 is a diagram for explaining how to attach a panel support piece used in a ceiling panel beam structure according to a second embodiment of the present invention.
FIG. 17 is a cross-sectional view showing a connection part of a beam structure for a ceiling panel according to a third embodiment of the present invention.
FIG. 18 is an enlarged view showing a portion H in FIG. 17;
FIG. 19 is an external perspective view showing a main beam member used in a ceiling panel beam structure according to a third embodiment of the present invention.
FIG. 20 is an external perspective view showing a sub beam member used for a ceiling panel beam structure according to a third embodiment of the present invention.
21A is a front view showing a sub beam member, and FIG. 21B is a right side view of the sub beam member.
FIG. 22 (a) is a front view showing a lock member used for a ceiling panel beam structure according to a third embodiment of the present invention, and FIG. 22 (b) is a left side view showing the lock member.
FIG. 23 is a perspective view showing a panel support piece used for a ceiling panel beam structure according to a third embodiment of the present invention.
FIG. 24 is a diagram illustrating a state in which a lock member according to a third embodiment of the present invention presses a sub beam member.
FIG. 25 is an exploded perspective view showing how to assemble a conventional ceiling panel beam structure.
[Explanation of symbols]
1 Beam structure for ceiling panel
2 ceiling panels
10, 50, 50A main beam member
13 First groove
14 Mounting groove
15 Second groove
16, 56 mounting part
20, 60, 60A Secondary beam member
22a, 23a, 66a, 67a Lower end
26 Locking part (first locking part)
27 Third groove
30 Connecting rod (lock means)
31 2nd connecting rod
40, 80, 85 Panel support piece
53 Upper groove (first groove)
54 mounting groove (fourth groove, fifth groove)
55 Lower groove (1st groove)
69A Upper locking part (first locking part)
69B, 69C Lower locking part (first locking part)
70, 75 Lock member

Claims (11)

天井パネルの縁部を支持するための天井パネル用梁構造であって、
ルーム天井に吊り下げられる長尺のもので、幅方向に間隔をあけて並設される主梁部材と、
該主梁部材の隣り合うもの同士に両端部が連結される副梁部材とを有し、
上記主梁部材は、幅方向の両側の少なくとも一方に長手方向に沿って、副梁部材の端部を係止させる第１凹溝を有し、
上記副梁部材は、両端部のそれぞれに、上記第１凹溝に入って係止される第１係止部を有し、
更に、第１係止部が第１凹溝に入って係止される状態を、機械的な変位により保持するロック手段を具備することを特徴とする天井パネル用梁構造。A ceiling panel beam structure for supporting an edge of the ceiling panel,
Main beam members that are suspended from the room ceiling and are arranged side by side at intervals in the width direction,
A sub beam member having both ends connected to adjacent ones of the main beam member,
The main beam member has a first concave groove for locking an end of the sub beam member along at least one of both sides in the width direction along the longitudinal direction,
The sub beam member has, at each of both ends, a first locking portion that is locked by entering the first groove.
Furthermore, a beam structure for a ceiling panel is provided with a lock means for holding, by mechanical displacement, a state in which the first locking portion enters the first groove and is locked. 前記第１凹溝は上方が開口したもので、前記第１係止部は上記第１凹溝に上方から入る鉤形状に形成され、前記ロック手段は主梁部材の副梁部材よりも上方位置に設けた係合部に上端部を係合させ、その状態で揺動させることで下端部が副梁部材の上方への移動を防止する構成となっていることを特徴とする請求項１に記載の天井パネル用梁構造。The first groove is open at the top, the first locking portion is formed in a hook shape that enters the first groove from above, and the locking means is located at a position higher than the sub beam member of the main beam member. The upper end part is engaged with the engaging part provided in the above, and the lower end part is configured to prevent upward movement of the sub-beam member by swinging in that state. The beam structure for ceiling panel as described. 前記第１凹溝および前記第１係止部が、高さを異ならせて複数設けられていることを特徴とする請求項２に記載の天井パネル用梁構造。3. The ceiling panel beam structure according to claim 2, wherein a plurality of the first concave grooves and the first locking portions are provided with different heights. 4. 主梁部材は、その幅方向の両側の少なくとも一方に、副梁部材の端部が載置される載置部を有し、その載置部に副梁部材の端部を上方から載置させたとき、副梁部材の第１係止部のうちの一つが主梁部材の該当する第１凹溝に入って係止されると同時に、副梁部材の残りの第１係止部が主梁部材の残りの該当する第１凹溝に入って係止されるように構成されていることを特徴とする請求項３に記載の天井パネル用梁構造。The main beam member has, on at least one of both sides in the width direction, a mounting portion on which an end of the sub beam member is mounted, and allows the end of the sub beam member to be mounted on the mounting portion from above. At the same time, one of the first locking portions of the sub beam member is locked by entering into the corresponding first groove of the main beam member, and at the same time, the remaining first locking portion of the sub beam member is The beam structure for a ceiling panel according to claim 3, wherein the beam member is configured to enter and lock the remaining corresponding first groove of the beam member. 前記第１凹溝は上方が開口したもので、前記第１係止部は前記第１凹溝に入って係止される鉤形状に形成されたものであり、
前記ロック手段は、前記主梁部材の幅方向の両側の少なくとも一方に長手方向に沿って設けられた、側方が開口した第２凹溝と、前記副梁部材の長手方向に沿って設けられた第３凹溝にスライド可能に取付けられ、副梁部材の端部から外方に突出させることで上記第２凹溝に入る連結棒とを有するものであることを特徴とする請求項１に記載の天井パネル用梁構造。The first groove is open at the top, and the first locking portion is formed in a hook shape to be locked by entering the first groove.
The locking means is provided along a longitudinal direction on at least one of both sides in the width direction of the main beam member, and is provided along a longitudinal direction of the sub beam member, the second concave groove being opened laterally. A connecting rod which is slidably mounted in the third groove, and which protrudes outward from an end of the sub-beam member to enter the second groove. The beam structure for ceiling panel as described. 主梁部材は、その幅方向の両側の少なくとも一方に、副梁部材の端部が載置される載置部を有し、その載置部に副梁部材の端部を上方から載置させたとき、副梁部材の係止部が主梁部材の第１凹溝に入って係止されるとともに、副梁部材の第３凹溝が主梁部材の第２凹溝に一致する高さになるように構成されていることを特徴とする請求項５に記載の天井パネル用梁構造。The main beam member has, on at least one of both sides in the width direction, a mounting portion on which an end of the sub beam member is mounted, and allows the end of the sub beam member to be mounted on the mounting portion from above. When the locking portion of the sub beam member enters the first groove of the main beam member and is locked, the height of the third groove of the sub beam member coincides with the second groove of the main beam member. The beam structure for a ceiling panel according to claim 5, wherein: 前記載置部の上方に第２凹溝が、その第２凹溝の上に第１凹溝が形成されており、第２凹溝は第１凹溝よりも載置部寄りの位置に設けられていることを特徴とする請求項６に記載の天井パネル用梁構造。A second groove is formed above the mounting portion, and a first groove is formed on the second groove, and the second groove is provided closer to the mounting portion than the first groove. The beam structure for a ceiling panel according to claim 6, wherein the beam is provided. 副梁部材の端部の下端が、主梁部材の載置部の厚み分だけ切欠かれていて、主梁部材に副梁部材の端部を連結させた状態で、主梁部材の下面と副梁部材の下面とが面一となるように構成されていることを特徴とする請求項４、６又は７に記載の天井パネル用梁構造。The lower end of the end of the sub beam member is notched by the thickness of the mounting portion of the main beam member, and the lower surface of the main beam member is connected to the sub beam member with the end of the sub beam member connected to the main beam member. The ceiling panel beam structure according to claim 4, wherein the lower surface of the beam member is configured to be flush with the lower surface of the beam member. 副梁部材の端部の下端が主梁部材の載置部の厚み分だけ切欠かれている部分の該端部からの長さが、主梁部材の載置部の幅寸法とほぼ一致するように設定されていることを特徴とする請求項８に記載の天井パネル用梁構造。The length from the end of the portion where the lower end of the end portion of the sub beam member is cut off by the thickness of the mounting portion of the main beam member substantially matches the width dimension of the mounting portion of the main beam member. The ceiling panel beam structure according to claim 8, wherein: 前記主梁部材は、幅方向の両側の少なくとも一方に長手方向に沿って第４凹溝が形成され、該第４凹溝にスライド可能に第２連結棒が取付けられ、該第２連結棒を介して長手方向に並設される主梁部材同士が連結されることを特徴とする請求項１乃至９のいずれかに記載の天井パネル用梁構造。The main beam member has a fourth concave groove formed in at least one of both sides in the width direction along the longitudinal direction, and a second connecting rod is slidably attached to the fourth concave groove, and the second connecting rod is The beam structure for a ceiling panel according to any one of claims 1 to 9, wherein main beam members juxtaposed in the longitudinal direction are connected to each other via the intervening members. 前記主梁部材は、幅方向の両側の少なくとも一方に長手方向に沿って第５凹溝が形成され、該第５凹溝は、円弧状であって、開口を内奥部よりも狭くして形成され、前記ロック手段は、上記第５凹溝に取付けられる、断面が概略円弧状をした取付部が、一端側の縁に沿って設けられたものであり、該取付部がその曲率半径を上記第５凹溝の曲率半径とほぼ同一に、かつ取付部の一部外周にその長手方向に沿って上記開口を通すための切欠き部が形成されていることを特徴とする請求項１乃至９のいずれかに記載の天井パネル用梁構造。In the main beam member, a fifth concave groove is formed along at least one side on both sides in the width direction along the longitudinal direction, and the fifth concave groove has an arc shape, and the opening is narrower than the inner deep part. The locking means is formed in such a manner that a mounting portion having a substantially arc-shaped cross section, which is mounted in the fifth concave groove, is provided along an edge on one end side, and the mounting portion has a radius of curvature. 4. A notch portion for passing the opening along the longitudinal direction thereof, which is substantially the same as the radius of curvature of the fifth groove, and is partially formed on the outer periphery of the mounting portion. 10. The beam structure for a ceiling panel according to any one of items 9.
JP2002236030A 2002-04-10 2002-08-13 Beam structure for ceiling panels Pending JP2004003252A (en)

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JP2002236030A JP2004003252A (en) 2002-04-10 2002-08-13 Beam structure for ceiling panels

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102900193A (en) * 2011-07-25 2013-01-30 佛山市利铭蜂窝复合材料有限公司 Cellular board ceiling system
KR101893835B1 (en) * 2018-02-20 2018-08-31 김진국 Structure of panel and mould bar for clean room
KR102189497B1 (en) * 2019-09-04 2020-12-11 심규현 Ceiling Joist For Supporting Ceiling Finish Material And Ceiling Finish Frame Having The Same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102900193A (en) * 2011-07-25 2013-01-30 佛山市利铭蜂窝复合材料有限公司 Cellular board ceiling system
CN102900193B (en) * 2011-07-25 2014-12-17 佛山市利铭蜂窝复合材料有限公司 Cellular board ceiling system
KR101893835B1 (en) * 2018-02-20 2018-08-31 김진국 Structure of panel and mould bar for clean room
KR102189497B1 (en) * 2019-09-04 2020-12-11 심규현 Ceiling Joist For Supporting Ceiling Finish Material And Ceiling Finish Frame Having The Same

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