JP3956038B2

JP3956038B2 - Component mounting apparatus and lighting fixture having the component mounting apparatus

Info

Publication number: JP3956038B2
Application number: JP32543898A
Authority: JP
Inventors: 智渡邉
Original assignee: Toshiba Lighting and Technology Corp
Current assignee: Toshiba Lighting and Technology Corp
Priority date: 1998-11-16
Filing date: 1998-11-16
Publication date: 2007-08-08
Anticipated expiration: 2018-11-16
Also published as: JP2000145732A

Description

【０００１】
【発明の属する技術分野】
本発明は、二つの独立した部品を互いに連結する際に用いる部品取り付け装置およびこの部品取り付け装置を適用して器具本体に反射板を取り付けるようにした照明器具に関する。
【０００２】
【従来の技術】
天井直付け形や吊り下げ形の照明器具において、けい光ランプや点灯装置を支持する器具本体に、ラッチ式の部品取り付け装置を用いて反射板を取り付けるようにしたものが知られている。
【０００３】
図１４は、天井直付け形の器具本体１と反射板２とを連結する際に用いる従来の部品取り付け装置３を開示している。上記器具本体１は、天板１ａと、この天板１ａの側縁から下向きに延びる一対の側板１ｂ，１ｃとを有し、これら側板１ｂ，１ｃの下端にスリット状の係合孔５が開口されている。反射板２は、天板１ａと向かい合う長孔状の取り付け孔６を有し、この取り付け孔６の開口部分が上記部品取り付け装置３を介して器具本体１に支持されている。
【０００４】
図１４ないし図１６に示すように、部品取り付け装置３は、ラッチ金具７と、このラッチ金具７に支持された合成樹脂製のラッチ８とを備えている。ラッチ金具７は、側板１ｂ，１ｃの間に跨る板状のベース９を有している。ベース９の中央部には、スリット状の挿入孔１０と、この挿入孔１０の周囲において下向きに突出する複数の係合凸部１１とが形成されている。挿入孔１０は、その長手方向に沿う中央の開口縁部に円弧状に湾曲された軸支持部１０ａを有している。
【０００５】
また、ベース９の両端部には、上向きに略直角に曲げられた起立部１３ａ，１３ｂが形成されている。起立部１３ａ，１３ｂは、器具本体１の側板１ｂ，１ｃと向かい合うようになっており、これら起立部１３ａ，１３ｂの上端には、夫々内向きに折り曲げられた係止片１４が形成されている。そのため、ラッチ金具７は、上記係止片１４を側板１ｂ，１ｃの係合孔５に差し込むことで、器具本体１に取り付けられている。
【０００６】
上記ラッチ８は、係合凸部１１に摺動可能に接する平坦な基盤１６を有している。基盤１６の中央部には、この基盤１６の厚み方向に延びる軸部１７が形成されている。軸部１７の下端部は、基盤１６の下方に導出されている。この軸部１７の下端部には、ラッチ８を回動させるための摘み部１８が形成されている。摘み部１８は、軸部１７の径方向に延びる細長い板状をなしており、この摘み部１８の上端と基盤１６の下面との間には、上記反射板２の板厚に相当する隙間１９が形成されている。
【０００７】
軸部１７の上端部は、基盤１６の上方に導出されている。この軸部１７の上端部には、ストッパ２１が形成されている。ストッパ２１は、軸部１７の径方向に延びる偏平な板状をなしている。このストッパ２１は、上記挿入孔１０に挿入可能な幅寸法を有するとともに、上記摘み部１８と平行に配置されている。
【０００８】
図１４や図１５に示すように、ストッパ２１は、ベース９の下方から挿入孔１０に差し込まれており、この挿入孔１０の軸支持部１０ａに軸部１７が軸回り方向に回動可能に嵌合されている。そのため、ラッチ８を軸部１７を中心に９０°回動させると、ストッパ２１が挿入孔１０と直交する位置関係となって、その下端がベース９の上面に摺動可能に接触し、このベース９を基盤１６と協働して挟み込むようになっている。
【０００９】
また、ストッパ２１は、その長手方向に沿う両端部にベース９の上面に向けて突出する一対の係止片２２ａ，２２ｂを備えている。係止片２２ａ，２２ｂは、ベース９の上面に近づくに従いストッパ２１の両端部から遠ざかる方向に傾斜されているとともに、このストッパ２１に接離する方向に弾性変形が可能となっている。これら係止片２２ａ，２２ｂの先端部間の寸法は、上記挿入孔１０の長手方向の寸法よりも大きく定められている。
【００１０】
このため、ラッチ８のストッパ２１をベース９の下方から挿入孔１０に差し込むと、係止片２２ａ，２２ｂが挿入孔１０の両端部との接触に伴ってストッパ２１に近づく方向に弾性変形し、挿入孔１０へのストッパ２１の挿入を許容する。係止片２２ａ，２２ｂが挿入孔１０を通過すると、これら係止片２２ａ，２２ｂがそれ自体の弾性によりストッパ２１から遠ざかる方向に拡開される。この結果、図１６に示すように、係止片２２ａ，２２ｂの先端がベース９の上面に引っ掛かり、ラッチ８がラッチ金具７に抜け止め保持される。
【００１１】
そして、ストッパ２１の摘み部１８側の端部２１ａは、係止片２２ａ，２２ｂの先端よりもベース９の板厚に相当する分だけ下方に張り出している。このため、図１６の（Ａ）に示すように、ラッチ８をベース９の下方から挿入孔１０に差し込んだ状態では、ストッパ２１の端部２１ａが挿入孔１０内に入り込んでいる。
【００１２】
この種の部品取り付け装置３を用いて反射板２を器具本体１に取り付けるには、まず、反射板２の取り付け孔６をラッチ８の摘み部１８に合わせ、この反射板２を器具本体１に向けて押し上げる。これにより、摘み部１８が取り付け孔６を貫通して反射板２の下方に露出されるので、この摘み部１８を指先で掴んで、ラッチ８を軸部１７を中心に９０°回動させる。
【００１３】
この回動により、摘み部１８が取り付け孔６と直交するような位置関係となって、この摘み部１８が反射板２の下面に引っ掛かり、この反射板２をベース９の下面と協働して挟み込む。それとともに、ラッチ８のストッパ２１がベース９の挿入孔１０と直交するような位置関係となり、このベース９を基盤１６との間で挟み込む。この結果、摘み部１８と取り付け孔６との位置関係が維持され、反射板３２器具本体１の下端に連結される。
【００１４】
【発明が解決しようとする課題】
ところで、上記従来のラッチ８は、そのストッパ２１を先頭にした姿勢でベース９の下方から挿入孔１０に挿入され、係止片２２ａ，２２ｂの先端をベース９の上面に引っ掛けることでラッチ金具７に抜け止め保持されている。
【００１５】
この場合、ストッパ２１の摘み部１８側の端部２１ａは、ラッチ８の摘み部１８を反射板２の取り付け孔６に挿入した時点、すなわち、係止片２２ａ，２２ｂの先端がベース９の上面に引っ掛かっている時点では、ラッチ金具７の挿入孔１０に入り込んだままとなっている。そのため、ラッチ８を回動させようとしても、ストッパ２１の端部２１ａが挿入孔１０の開口縁部に引っ掛かってしまい、ラッチ８の回動が妨げられてしまう。
【００１６】
したがって、従来の部品取り付け装置３によると、ラッチ８を回動させるに当っては、図１６の（Ｂ）に矢印で示すように、このラッチ８をベース９に向けて押圧することにより、ストッパ２１の端部２１ａを挿入孔１０から押し出す必要があり、その分、ラッチ８の操作性が悪くなるといった問題がある。
【００１７】
本発明は、このような事情にもとづいてなされたもので、ラッチの回動時に、このラッチをラッチ金具に向けて押圧する必要はなく、ラッチの回動操作を円滑かつ速やかに行なえるとともに、ラッチの本体をラッチ金具の嵌合孔に容易に嵌め込むことができる部品取り付け装置およびこの部品取り付け装置を有する照明器具の提供を目的とする。
【００１８】
【課題を解決するための手段】
上記目的を達成するため、本発明の一つの形態に係る部品取り付け装置は、
第１の部品に取り付けられたラッチ金具と、
このラッチ金具に回動可能に支持され、上記第１の部品に第２の部品を連結するためのラッチと、を備え、
上記ラッチは、その回動軸線と交差する方向に延びる細長い摘み部を有し、この摘み部を上記第２の部品に開けられた長孔状の取り付け孔に通すとともに、この取り付け孔と交差する方向に回動させることにより、この摘み部を上記第２の部品に引っ掛けるようにした部品取り付け装置であって、
上記ラッチ金具は、上記取り付け孔と向かい合う円形の嵌合孔を有し、
上記ラッチは、上記摘み部に連なるとともに、この摘み部よりも大径に形成されて上記嵌合孔に回動可能に嵌合される円筒状の本体と、この本体の摘み部とは反対側の端部から径方向外側に突出されて上記嵌合孔の開口縁部に摺動可能に引っ掛かる支持部とを備え、上記本体は、上記摘み部に連なる底壁を有するとともに、この底壁における上記摘み部の両端と向かい合う位置に一対の肉抜き孔を形成し、
上記本体の外周面には、この本体を上記摘み部を先頭にした姿勢で上記嵌合孔に嵌め込んだ時に、上記支持部と協働して上記嵌合孔の開口縁部を摺動可能に挟み込む複数の係止凸部を形成し、これら係止凸部は、上記肉抜き孔に対応するように上記本体の外周面に位置されていることを特徴としている。
【００１９】
このような構成において、ラッチをラッチ金具に取り付けるには、ラッチの本体をその摘み部を先頭にした姿勢でラッチ金具の嵌合孔に嵌め込む。すると、係止凸部が嵌合孔の開口縁部を乗り越えるとともに、支持部が嵌合孔の開口縁部に摺動可能に引っ掛かり、これら支持部と係止凸部との間で嵌合孔の開口縁部が挟み込まれる。これにより、ラッチがラッチ金具に抜け止めされるとともに、本体の軸回り方向に回動可能に保持される。
【００２０】
この場合、嵌合孔と本体との嵌合部分は、共に周方向に連続する円形をなしているから、この嵌合部分に本体の回動を妨げるような凹凸は存在せず、それ故、本体を回動させる際には摘み部を掴んで単に回すだけで良い。このため、従来のように摘み部を押圧しつつ回動させるといった面倒な操作は一切不要となり、ラッチの回動操作を円滑かつ速やかに行なうことができる。
【００２２】
それとともに、肉抜き孔の存在により、円筒状をなす本体の剛性を低く抑えることができ、この本体が径方向に撓み易くなる。このため、本体を嵌合孔に嵌め込む際に、係止凸部が嵌合孔の開口縁部に引っ掛かり難くなり、この本体を嵌合孔に嵌め込む際の抵抗が軽減される。
さらに、肉抜き孔の位置を特定したことに伴い、本体の底壁は摘み部と略直交する方向に延びるので、摘み部を第２の部品の取り付け孔に挿入した後、この摘み部を９０°回動させると、本体の底壁が第２の部品の取り付け孔と向かい合う。そのため、本体の底壁に孔を開けた構成でありながら、この底壁を利用して取り付け孔を塞ぐことができ、第１の部品と第２の部品とを連結した状態での外観を良好に維持することができる。
【００２３】
上記目的を達成するため、本発明の他の形態に係る部品取り付け装置は、
第１の部品に取り付けられたラッチ金具と、
このラッチ金具に回動可能に支持され、上記第１の部品に第２の部品を連結するためのラッチと、を備え、
上記ラッチは、その回動軸線と交差する方向に延びる細長い摘み部を有し、この摘み部を上記第２の部品に開けられた長孔状の取り付け孔に通すとともに、この取り付け孔と交差する方向に回動させることにより、この摘み部を上記第２の部品に引っ掛けるようにした部品取り付け装置であって、
上記ラッチ金具は、上記取り付け孔と向かい合う円形の嵌合孔を有し、
上記ラッチは、上記摘み部に連なるとともに、この摘み部よりも大径に形成されて上記嵌合孔に回動可能に嵌合される円筒状の本体を有し、この本体の摘み部とは反対側の端部に、上記本体の径方向外側に突出されて上記嵌合孔の開口縁部に摺動可能に引っ掛かる支持部を形成し、
上記本体の外周面に、上記本体の周方向に互いに離間する複数の係止凸部を形成し、上記係止凸部は、上記摘み部を先頭にした姿勢で上記本体を上記嵌合孔に嵌め込んだ時に、上記支持部と協働して上記嵌合孔の開口縁部を摺動可能に挟み込むとともに、上記本体の外周面のうち上記係止凸部とは異なる位置に、上記支持部に連なるスリットを形成したことを特徴としている。
【００２４】
このような構成においても、ラッチ金具の嵌合孔とラッチの本体との嵌合部分は、共に周方向に連続する円形をなしているから、この嵌合部分に本体の回動を妨げるような凹凸は存在せず、それ故、本体を回動させる際には摘み部を掴んで単に回すだけで良い。このため、従来のように摘み部を押圧しつつ回動させるといった面倒な操作は一切不要となり、ラッチの回動操作を円滑かつ速やかに行なうことができる。
さらに、スリットの存在により、円筒状をなす本体の剛性を低く抑えることができ、この本体が径方向に撓み易くなる。このため、本体を嵌合孔に嵌め込む際に、係止凸部が嵌合孔の開口縁部に引っ掛かり難くなり、本体を嵌合孔に嵌め込む際の抵抗が軽減される。
【００２６】
本発明の好ましい形態によれば、ラッチの支持部は、本体の周方向に９０°の間隔を存して配置された四つの切り欠きを有し、これら切り欠きのうちの二つと係止凸部とは、上記本体の軸方向に互いに向かい合っているとともに、ラッチ金具は、嵌合孔の周囲に位置して上記切り欠きに対応する少なくとも一つの凸部を有し、この凸部の高さと上記ラッチ金具の厚みを合わせた寸法は、上記係止凸部から支持部までの隙間寸法よりも僅かに大きく定められていることを特徴としている。
【００２７】
このような構成において、摘み部を介して本体を軸回り方向に回動させると、この本体が９０°回動する毎に切り欠きが凸部に乗り上げることになり、ラッチの回動操作時に節度感を付与することができる。
【００２８】
しかも、切り欠きと本体の外周面の係止凸部とは、この本体の軸方向に互いに向かい合っているので、例えばラッチを合成樹脂材料の型成形品にて構成する場合に、上記切り欠きを型抜き用の孔として利用することができる。このため、係止凸部に対応する位置において、成形用金型を本体の径方向にスライドさせる必要はなく、ラッチを本体の軸方向に分割可能な成形用金型を用いて型成形することができる。
【００２９】
上記目的を達成するため、本発明の一つの形態に係る照明器具は、
器具本体に取り付けられたラッチ金具と、
このラッチ金具に回動可能に支持され、上記器具本体に反射板を連結するためのラッチと、を備え、
上記ラッチは、その回動軸線と交差する方向に延びる細長い摘み部を有し、この摘み部を上記反射板に開けられた長孔状の取り付け孔に通すとともに、この取り付け孔と交差する方向に回動させることにより、この摘み部を上記反射板に引っ掛けるようにした照明器具であって、
上記ラッチ金具は、上記取り付け孔と向かい合う円形の嵌合孔を有し、
上記ラッチは、上記摘み部に連なるとともに、この摘み部よりも大径に形成されて上記嵌合孔に回動可能に嵌合される円筒状の本体と、この本体の摘み部とは反対側の端部から径方向外側に突出されて上記嵌合孔の開口縁部に摺動可能に引っ掛かる支持部とを備え、上記本体は、上記摘み部に連なる底壁を有するとともに、この底壁における上記摘み部の両端と向かい合う位置に一対の肉抜き孔を形成し、
上記本体の外周面には、この本体を上記摘み部を先頭にした姿勢で上記嵌合孔に嵌め込んだ時に、上記支持部と協働して上記嵌合孔の開口縁部を摺動可能に挟み込む複数の係止凸部を形成し、これら係止凸部は、上記肉抜き孔に対応するように上記本体の外周面に位置されていることを特徴としている。
さらに、上記目的を達成するため、本発明の他の形態に係る照明器具は、
器具本体に取り付けられたラッチ金具と、
このラッチ金具に回動可能に支持され、上記器具本体に反射板を連結するためのラッチと、を備え、
上記ラッチは、その回動軸線と交差する方向に延びる細長い摘み部を有し、この摘み部を上記反射板に開けられた長孔状の取り付け孔に通すとともに、この取り付け孔と交差する方向に回動させることにより、この摘み部の両端を上記反射板に引っ掛けるようにした照明器具であって、
上記ラッチ金具は、上記取り付け孔と向かい合う円形の嵌合孔を有し、
上記ラッチは、上記摘み部に連なるとともに、この摘み部よりも大径に形成されて上記嵌合孔に回動可能に嵌合される円筒状の本体を有し、この本体の摘み部とは反対側の端部に、上記本体の径方向外側に突出されて上記嵌合孔の開口縁部に摺動可能に引っ掛かる支持部を形成し、
上記本体の外周面に、上記本体の周方向に互いに離間する複数の係止凸部を形成し、上記係止凸部は、上記摘み部を先頭にした姿勢で上記本体を上記嵌合孔に嵌め込んだ時に、上記支持部と協働して上記嵌合孔の開口縁部を摺動可能に挟み込むとともに、上記本体の外周面のうち上記係止凸部とは異なる位置に、上記支持部に連なるスリットを形成したことを特徴としている。
【００３０】
このような構成において、ラッチをラッチ金具に取り付けるには、ラッチの本体をその摘み部を先頭にした姿勢でラッチ金具の嵌合孔に嵌め込む。すると、係止凸部が嵌合孔の開口縁部を乗り越えるとともに、支持部が嵌合孔の開口縁部に摺動可能に引っ掛かり、これら支持部と係止凸部との間で嵌合孔の開口縁部が挟み込まれる。これにより、ラッチがラッチ金具に抜け止めされるとともに、本体の軸回り方向に回動可能に保持される。
【００３１】
この場合、嵌合孔と本体との嵌合部分は、共に周方向に連続する円形をなしているから、この嵌合部分に本体の回動を妨げるような凹凸は存在せず、摘み部を掴んで単に回すだけの作業で本体を自由に回動させることができる。このため、反射板を器具本体に連結するに当っては、摘み部を反射板の取り付け孔に通した後に、この取り付け孔と交差する方向に所要の角度回動させれば良く、それ故、従来のように摘み部を押圧しつつ回動させるといった面倒な操作が一切不要となり、反射板を器具本体に簡単かつ確実に取り付けることができる。
さらに、肉抜き孔又はスリットの存在により、円筒状をなす本体の剛性を低く抑えることができ、この本体が径方向に撓み易くなる。このため、本体を嵌合孔に嵌め込む際に、係止凸部が嵌合孔の開口縁部に引っ掛かり難くなり、本体を嵌合孔に嵌め込む際の抵抗が軽減される。
【００３２】
【発明の実施の形態】
以下本発明の第１の実施の形態を、図１ないし図７にもとづいて説明する。
【００３３】
図１は、天井直付けあるいは吊り下げ形のけい光ランプ用照明器具３１を示している。この照明器具３１は、第１の部品としての器具本体３２と、第２の部品としての反射板３３とを備えている。
【００３４】
図２および図３に示すように、器具本体３２は、天板３２ａと、この天板３２ａの側縁から下向きに延びる一対の側板３２ｂ，３２ｃとを有している。この器具本体３２は、鋼板を素材とした板金プレス加工部品にて構成されており、全体として下向きに開放された細長い箱状をなしている。側壁３２ａ，３２ｂの長手方向に離間した複数箇所には、夫々金具取り付け孔３４が形成されている。金具取り付け孔３４は、器具本体３２の長手方向に延びるスリット状をなしているとともに、この器具本体３２の幅方向に互いに向かい合っている。
【００３５】
器具本体３２の長手方向に沿う両端部には、夫々ランプソケット３５（図１に一方のみを図示）が取り付けられている。ランプソケット３５は、器具本体３２の下方に突出されており、このランプソケット３５の間に跨って直管形けい光ランプ３６が支持されている。また、器具本体３２の内部には、点灯装置や電源端子台（共に図示せず）が収容されている。
【００３６】
上記反射板３３は、器具本体３２とけい光ランプ３６との間に配置されている。反射板３３は、鋼板を素材とした板金プレス加工部品にて構成されている。この反射板３３は、器具本体３２の長手方向に沿って延びており、この反射板３３のけい光ランプ３６と向かい合う表面は、白色の光反射面３７をなしている。
【００３７】
反射板３３の長手方向に沿う複数箇所には、取り付け孔３８が形成されている。取り付け孔３８は、反射板３３の長手方向に延びる長孔状の開口形状を有し、夫々反射板３３の幅方向の中央部に位置されている。
【００３８】
図１および図３に示すように、反射板３３は、ラッチ式の部品取り付け装置４０を介して器具本体３２に支持されている。部品取り付け装置４０は、ラッチ金具４１と、このラッチ金具４１に支持されたラッチ４２とを備えている。
【００３９】
ラッチ金具４１は、器具本体３２の板厚よりも厚手の鋼板を用いた板金プレス加工部品にて構成されている。このラッチ金具４１は、平坦な板状をなすベース４３を有している。ベース４３は、器具本体３２の幅方向に延びる長方形状をなしている。このベース４３の中央部には、嵌合孔４４と、一対の係合凸部４５とが形成されている。嵌合孔４４は、円形の開口形状を有し、上記反射板３３の取り付け孔３８と向かい合うようになっている。係合凸部４５は、嵌合孔４４の周囲において、その周方向に１８０°の間隔を存して配置されており、これら係合凸部４５は、嵌合孔４４を挟んで互いに向かい合っている。係合凸部４５は、半球状をなしており、上記ベース４３の上面から上向きに突出されている。
【００４０】
ベース４３の長手方向に沿う両端部には、下向きに張り出すように折り曲げられた当接部４６ａ，４６ｂが形成されている。当接部４６ａ，４６ｂの先端には、上向きに略直角に折り曲げられた起立部４７ａ，４７ｂが形成されており、これら起立部４７ａ，４７ｂは、器具本体３２の側板３２ｂ，３２ｃの外側面に重ねられるようになっている。起立部４７ａ，４７ｂの上端には、夫々内向きに折り曲げられた係止片４８ａ，４８ｂが形成されている。
【００４１】
そのため、ラッチ金具４１は、係止片４８ａ，４８ｂを側板３２ｂ，３２ｃの外側から金具取り付け孔３４に差し込むことで、これら側板３２ｂ，３２ｃの下端部間に跨る水平な姿勢で器具本体３２に支持されており、そのベース４３の当接部４６ａ，４６ｂが器具本体３２の下方に向けて露出されている。
【００４２】
上記ラッチ４２は、上記光反射面３７と同系色の合成樹脂材料を素材とする型成形品にて構成されている。このラッチ４２は、円筒状の本体５０と、この本体５０に連なる摘み部５１とを備えている。
【００４３】
本体５０は、上記ラッチ金具４１の嵌合孔４４にきっちりと嵌まり込むような直径を有する周壁５０ａを含み、この周壁５０ａの軸長は、ベース４３の板厚よりも大きく定められている。本体５０の一端には、径方向外側に向けて張り出すフランジ状の支持部５２が形成されている。この支持部５２は、上記ベース４３の上面および係合凸部４５の頂部に摺動可能に重ね合わされるようになっている。支持部５２の四箇所には、切り欠き５３ａ〜５３ｄが形成されている。切り欠き５３ａ〜５３ｄは、支持部５２の周方向に９０°の間隔を存して配置されており、これら切り欠き５３ａ〜５３ｄは、夫々支持部５２の外周縁部に開放されている。
【００４４】
図３に最も良く示されるように、本体５０の周壁５０ａの外周面には、一対の係止凸部５５ａ，５５ｂが一体に形成されている。係止凸部５５ａ，５５ｂは、周壁５０ａの周方向に１８０°の間隔を存して配置されている。これら係止凸部５５ａ，５５ｂは、本体５０の外周面から突出されて、上記支持部５２と向かい合っている。そして、係止凸部５５ａ，５５ｂは、本体５０をベース４３の嵌合孔４４に嵌め込んだ時に、上記支持部５２と協働して嵌合孔４４の開口縁部を摺動可能に挟み込むようになっており、このことにより、本体５０がベース４３に回動可能に支持される。
【００４５】
図３の（Ｂ）や（Ｄ）に示すように、係止凸部５５ａ，５５ｂと支持部５２との間には、ベース４３の板厚を上回るような大きさの隙間５６が形成されている。具体的には、隙間５６の寸法Ｓ₁と、上記係合凸部４５の高さとベース４３の板厚とを合わせた寸法Ｓ₂とを比較した場合に、これらＳ₁とＳ₂は、
Ｓ₁＜Ｓ₂
の関係を満足するように定められている。
【００４６】
図３の（Ａ）および（Ｂ）に示すように、係止凸部５５ａ，５５ｂは、上記支持部５２の四つの切り欠き５３ａ〜５３ｄのうちの二つの切り欠き５３ａ，５３ｃと本体５０の軸方向に向かい合っている。そのため、切り欠き５３ａ，５３ｃは、係止凸部５５ａ，５５ｂを含む本体５０を型成形する場合に、その成形用金型の型抜き用の孔を兼ねており、この金型を係止凸部５５ａ，５５ｂの部分で本体５０の径方向にスライドさせる必要はない。
【００４７】
図２および図７に示すように、本体５０における支持部５２とは反対側の他端は、底壁５８によって一体的に塞がれている。底壁５８の中央部には、本体５０と同軸状をなす軸部５９が形成されている。軸部５９の一端は、本体５０の内側に導入されているとともに、軸部５９の他端は、本体５０の下方に導出されており、この軸部５９の他端に上記摘み部５１が一体に形成されている。
【００４８】
摘み部５１は、本体５０の径方向に沿う細長い板状をなしている。摘み部５１は、上記係止凸部５５ａ，５５ｂを結ぶ線分Ｘ₁（図５に示す）に沿って延びており、その両端が係止凸部５５ａ，５５ｂの下方に位置されている。そして、摘み部５１は、ラッチ金具４１の嵌合孔４４および上記反射板３３の取り付け孔３８に挿入可能な大きさを有し、この摘み部５１の長手方向に沿う全長Ｌは、図６に示すように、本体５０の直径Ｄよりも小さく設定されている。そのため、本体５０は、摘み部５１よりも大径に形成されている。
【００４９】
図２、図５および図６に示すように、本体５０の底壁５８は、一対の肉抜き孔６０ａ，６０ｂを有している。肉抜き孔６０ａ，６０ｂは、周壁５０ａの外周面に沿うような円弧状の縁部を有する扇形をなしており、上記軸部５９を挟んで対称に配置されている。そして、肉抜き孔６０ａ，６０ｂは、摘み部５１の長手方向に沿って並べられており、この摘み部５１の長手方向の両端部と向かい合っている。そのため、図６に示すように、底壁５８は、肉抜き孔６０ａ，６０ｂの間において本体５０の径方向に延びる帯状をなしており、上記摘み部５１に対し直交し合うような位置関係となっている。
【００５０】
底壁５８の周縁部には、上向きに延びるリブ６１が形成されている。このリブ６１は、本体５０の径方向に延びて、この本体５０の周壁５０ａや軸部５９の一端部に連なっている。
【００５１】
このような構成のラッチ４２は、その本体５０を摘み部５１を先頭にした姿勢で嵌合孔４４に嵌め込むことで、ラッチ金具４１に保持されている。すなわち、本体５０をベース４３の上方から嵌合孔４４に嵌め込んでいくと、まず最初に係止凸部５５ａ，５５ｂが嵌合孔４４の開口縁部と干渉し合う。この際、ラッチ４２は、合成樹脂製であることに加えて、その本体５０の底壁５８に肉抜き孔６０ａ，６０ｂが形成されているので、これら肉抜き孔６０ａ，６０ｂに対応する部分では、本体５０の周壁５０ａが互いに連結されておらず、その分、本体５０の剛性が低く抑えられている。このため、本体５０を嵌合孔４４に嵌め込んだ時に、本体５０を径方向に撓ませることができ、上記係止凸部５５ａ，５５ｂが嵌合孔４４の開口縁部に引っ掛かり難くなる。よって、嵌合孔４４への本体５０の嵌め込み作業を容易に行なうことができる。
【００５２】
係止凸部５５ａ，５５ｂが嵌合孔４４の開口縁部を乗り越えると、支持部５２がベース４３の上面に重なり合い、図３に見られるように、ベース４３と係止凸部５５ａ，５５ｂとの間に嵌合孔４４の開口縁部が入り込む。これにより、ラッチ４２がラッチ金具４１に回動可能に抜け止め保持され、このラッチ４２の摘み部５１がベース４３の嵌合孔４４から露出される。
【００５３】
ラッチ４２がラッチ金具４１に保持されたならば、摘み部５１がベース４３の長手方向と直交する姿勢にラッチ４２を回動させる。この回動により、支持部５２の切り欠き５３ａ，５３ｃが係合凸部４５に引っ掛かり、ラッチ４２の自由な回動が制限される。この結果、ラッチ金具４１は、ラッチ４２を抜け止め保持した状態で器具本体３２に取り付けられることになる。
【００５４】
次に、照明器具３１の反射板３３を上記部品取り付け装置４０を用いて器具本体３２に取り付ける手順について説明する。
【００５５】
図１に示すように、器具本体３２が天井に据え付けられている状態においては、まず、反射板３３の取り付け孔３８をラッチ４２の摘み部５１に合わせた後、この反射板３３を器具本体３２に向けて押し上げる。この押し上げにより、反射板３３の裏面がベース４３の当接部４６ａ，４６ｂに突き合わされるとともに、摘み部５１が取り付け孔３８を貫通して反射板３３の下方に突出される。そして、この摘み部５１を手で掴み、ラッチ４２をいずれかの方向に９０°回動させる。
【００５６】
この回動により、摘み部５１が取り付け孔３８と直交するような位置関係となって、この摘み部５１の両端部が反射板３３の表面に引っ掛かり、この反射板３３を上記ベース４３の当接部４６ａ，４６ｂと協働して挟み込む。この結果、反射板３３が器具本体３２に取り付けられ、この器具本体３２の下端やラッチ金具４１が反射板３３によって覆い隠される。
【００５７】
ラッチ４２を９０°回動させると、帯状をなす本体５０の底壁５８が摘み部５１と直交する方向に延びるので、この底壁５８が反射板３３の裏側から取り付け孔３８と向かい合う。そのため、上記底壁５８に本体５０の嵌合を容易にするための肉抜き孔６０ａ，６０ｂを形成した構成でありながら、下方から視認される取り付け孔３８を底壁５８を利用して閉塞することができる。
【００５８】
よって、ラッチ４２自体が反射板３３の光反射面３７と同系色であることと合わせて、反射板３３の取り付け孔３８が目立ち難くなり、照明器具３１の体裁が良好となる。
【００５９】
また、ラッチ４２を９０°回動させると、支持部５２が一体的に連れ回るので、この支持部５２の切り欠き５３ａ〜５３ｄとベース４３の係合凸部４５との位置関係が相対的に変化する。すなわち、切り欠き５３ａ〜５３ｄは、本体５０の周方向に９０°の間隔を存して配置されているとともに、係合凸部４５にしても嵌合孔４４の周方向に１８０°の間隔を存して配置されているので、ラッチ４２を９０°回動させると、切り欠き５３ａ，５３ｃが係合凸部４５から離脱した後、この係合凸部４５に他の切り欠き５３ｂ，５３ｄが引っ掛かる。
【００６０】
この場合、係合凸部４５の高さとベース４３の板厚とを合わせた寸法Ｓ₂は、係止凸部５５ａ，５５ｂと支持部５２との間の隙間５６の寸法Ｓ₁よりも大きく定められているので、ラッチ４２を回動させると、切り欠き５３ａ，５３ｃ又は５３ｂ，５３ｄの縁部が係合凸部４５に乗り上げ、この時に節度感が付与される。そして、ラッチ４２の回動の進展により、切り欠き５３ａ〜５３ｄに連なる支持部５２が係合凸部４５に乗り上げると、図３の（Ｃ）に強調して示すように、支持部５２が弾性的に変形するとともに、係止凸部５５ａ，５５ｂが嵌合孔４４の開口周縁部に強く押し付けられる。
【００６１】
ラッチ４２の回動角度が９０°に至ると、支持部５２が係合凸部４５を乗り越すとともに、切り欠き５３ａ，５３ｃ又は５３ｂ，５３ｄに係合凸部４５が嵌まり込むので、この時に節度感が付与される。そのため、ラッチ４２の回動開始時および回動完了時の夫々において節度感が付与されることになり、ラッチ４２が９０°回動されたか否かを摘み部５１の向きを見なくとも認識することができる。
【００６２】
このような部品取り付け装置４０によれば、ベース４３の嵌合孔４４と本体５０との嵌合部分は、共に周方向に連続する円形をなしているから、この嵌合部分に本体５０の回動を妨げるような凹凸は存在せず、本体５０を回動させる際には、摘み部５１を手で掴んでいずれかの方向に９０°回すだけで良いことになる。
【００６３】
このため、反射板３３を器具本体３２に連結するに当って、ラッチ４２の摘み部５１を反射板３３の取り付け孔３８に通した後に、この取り付け孔３８と直交する方向に９０°回動させれば良く、従来のように摘み部５１を押し上げながら、ラッチ４２を回動させるといった面倒な操作が一切不要となる。
【００６４】
したがって、摘み部５１を回すだけでラッチ４２を円滑かつ速やかに回動させることができ、反射板３３を器具本体３２に簡単かつ確実に取り付けることができる。
【００６５】
また、本体５０の外周面の係止凸部５５ａ，５５ｂと支持部５２の切り欠き５３ａ，５３ｃとは、本体５０の軸方向に互いに向かい合っているので、この切り欠き５３ａ，５３ｃを型抜き用の孔として利用することができる。このため、ラッチ４２を型成形するに当って、成形用の金型は本体５０の軸方向に分割すれば良く、その分、成形型の分割構造や合わせ方向を簡略化して、成形型のコストひいてはラッチ４２の製造コストを低減することができる。
【００６６】
なお、上記第１の実施の形態においては、本体の底壁に肉抜き孔を形成することで本体を撓み易くしたが、この肉抜き孔に加えて、上記本体の外周面に支持部に連なる複数のスリットを形成し、本体を径方向により撓み易くするようにしても良い。
【００６７】
また、本発明は、上記第１の実施の形態に特定されるものではなく、図８ないし図１３に本発明の第２の実施の形態を示す。
【００６８】
この第２の実施の形態は、主にラッチ４２の本体５０の形状が上記第１の実施の形態と相違しており、それ以外のラッチ４２、ラッチ金具４１および照明器具３１の基本的な構成は、上記第１の実施の形態と同様である。そのため、第２の実施の形態において、上記第１の実施の形態と同一の構成部分には同一の参照符号を付して、その説明を省略する。
【００６９】
図１０に示すように、本体５０の周壁５０ａには、係止凸部５５ａ，５５ｂを外れた位置に一対のスリット７２ａ，７２ｂが形成されている。スリット７２ａ，７２ｂは、本体５０の周方向に１８０°の間隔を存して配置されており、この本体５０の径方向に互いに向かい合っている。そして、スリット７２ａ，７２ｂは、本体５０の軸方向に延びているとともに、この本体５０に連なる支持部５２に開口されて、その切り欠き５３ｂ，５３ｄに連なっている。そのため、スリット７２ａ，７２ｂと係止凸部５５ａ，５５ｂとは、本体５０の周方向に９０°の角度を存して交互に配置されている。
【００７０】
スリット７２ａ，７２ｂは、本体５０の周壁５０ａを貫通している。これらスリット７２ａ，７２ｂの開口縁部は、本体５０の径方向に延びる連結壁７３ａ，７３ｂを介して互いに連結されている。連結壁７３ａ，７３ｂは、本体５０の径方向に沿って延びており、これら連結壁７３ａ，７３ｂの間には、本体５０を径方向に分断するような溝７４が形成されている。
【００７１】
さらに、ラッチ４２は、合成樹脂材料の型成形品にて構成されているため、この本体５０の底壁５８には、摘み部５１を成形する際の型抜き用の通孔７５が形成されている。この通孔７５は、本体５０の径方向に延びる長孔状をなすとともに、上記溝７４に連なっている。
【００７２】
また、ラッチ金具４１のベース４３は、その嵌合孔４４の周囲に四つの係合凸部７６を有している。これら係合凸部７６は、本体５０の切り欠き５３ａ〜５３ｄに対応するように、嵌合孔４４の周方向に９０°の間隔を存して配置されている。このため、本体５０が９０°回動されると、その回動開始時および回動完了時の夫々において、切り欠き５３ａ〜５３ｄと係合凸部７６とが係合し合い、節度感が強化されるようになっている。
【００７３】
このような構成によると、本体５０の周壁５０ａの互いに対向し合う二箇所に、この本体５０の軸方向に延びるスリット７２ａ，７２ｂを形成したので、円筒状の本体５０の剛性を低く抑えることができ、この本体５０を径方向に撓み易くすることができる。
【００７４】
このため、本体５０をベース４３の嵌合孔４４に嵌め込む際に、係止凸部５５ａ，５５ｂが嵌合孔４４の開口縁部に引っ掛かり難くなり、その分、本体５０を嵌合孔４４に嵌め込む際の抵抗が軽減されて、部品取り付け装置４０の組み立て作業を容易に行なうことができる。
【００７５】
なお、本発明に係る部品取り付け装置は、照明器具の器具本体と反射板とを取り付けるものに特定されるものではなく、その他の種々の分野の部品の取り付け用として適用できることは勿論である。
【００７６】
【発明の効果】
以上詳述した本発明によれば、ベースの嵌合孔と本体との嵌合部分に本体の回動を妨げるような凹凸が存在せず、この本体を回動させる際には、摘み部を掴んでいずれかの方向に所要の角度回すだけで良いので、従来のように摘み部を押し上げながら回動させるといった面倒な操作が一切不要となる。
【００７７】
したがって、摘み部を単に回すだけでラッチを円滑かつ速やかに回動させることができ、第１の部品（器具本体）に第２の部品（反射板）を簡単かつ確実に取り付けることができる。
しかも、円筒状をなす本体の剛性を低く抑えることができるので、この本体が径方向に撓み易くなり、本体を嵌合孔に嵌め込む際に、係止凸部が嵌合孔の開口縁部に引っ掛かり難くなる。よって、本体を嵌合孔に嵌め込む際の抵抗を軽減することができ、嵌合孔に対する本体の嵌め込み作業を容易に行えるといった利点がある。
【図面の簡単な説明】
【図１】本発明の第１の実施の形態に係る照明器具の斜視図。
【図２】器具本体、反射板およびこれら両者を連結する部品取り付け装置の位置関係を分解して示す斜視図。
【図３】（Ａ）は、器具本体に部品取り付け装置を介して反射板を取り付けた状態を示す照明器具の断面図。
（Ｂ）は、図３の（Ａ）の３Ｆ部を拡大して示す断面図。
（Ｃ）は、本体の支持部が係合凸部に乗り上げた状態を示す断面図。
（Ｄ）は、本体の支持部がベースの嵌合孔に引っ掛かった状態を示す断面図。
【図４】ラッチとラッチ金具とを分離させた状態を示す部品取り付け装置の斜視図。
【図５】部品取り付け装置を支持部側から見た平面図。
【図６】部品取り付け装置を摘み部側から見た下面図。
【図７】図５の７Ｆ−７Ｆ線に沿う断面図。
【図８】本発明の第２の実施の形態において、器具本体、反射板およびこれら両者を連結する部品取り付け装置の位置関係を分解して示す斜視図。
【図９】器具本体に部品取り付け装置を介して反射板を取り付けた状態を示す照明器具の断面図。
【図１０】ラッチとラッチ金具とを分離させた状態を示す部品取り付け装置の斜視図。
【図１１】ラッチおよびラッチ金具を支持部の方向から見た部品取り付け装置の平面図。
【図１２】ラッチおよびラッチ金具を摘み部の方向から見た部品取り付け装置の下面図。
【図１３】図１１の１１Ｆ−１１Ｆ線に沿う断面図。
【図１４】従来の照明器具において、器具本体、反射板およびこれら両者を連結する部品取り付け装置の位置関係を分解して示す斜視図。
【図１５】ラッチとラッチ金具とを分離させた状態を示す部品取り付け装置の斜視図。
【図１６】（Ａ）は、ラッチをラッチ金具の挿入孔に下方から挿入した状態を示す部品取り付け装置の断面図。
（Ｂ）は、ラッチを押し上げて回動させる状態を示す部品取り付け装置の断面図。
【符号の説明】
３１…照明器具、３２…第１の部品（器具本体）、３３…第２の部品（反射板）、３６…光源（けい光ランプ）、３８…取り付け孔、４０…部品取り付け装置、４１…ラッチ金具、４２…ラッチ、４４…嵌合孔、５０…本体、５１…摘み部、５２…支持部、５５ａ，５５ｂ…係止凸部、６０ａ，６０ｂ…肉抜き孔、７２ａ，７２ｂ…スリット。 [0001]
BACKGROUND OF THE INVENTION
The present invention relates to a component attachment device used when two independent components are connected to each other, and a lighting fixture in which a reflector is attached to a fixture body by applying this component attachment device.
[0002]
[Prior art]
2. Description of the Related Art In a ceiling-mounted or hanging-type lighting fixture, a reflector is attached to a fixture body that supports a fluorescent lamp or a lighting device using a latch-type component mounting device.
[0003]
FIG. 14 discloses a conventional component mounting apparatus 3 used when connecting a ceiling-mounted appliance body 1 and a reflector 2. The instrument body 1 includes a top plate 1a and a pair of side plates 1b and 1c extending downward from the side edges of the top plate 1a, and a slit-like engagement hole 5 is opened at the lower ends of the side plates 1b and 1c. Has been. The reflection plate 2 has a long hole-shaped mounting hole 6 facing the top plate 1 a, and an opening portion of the mounting hole 6 is supported by the instrument body 1 via the component mounting device 3.
[0004]
As shown in FIGS. 14 to 16, the component mounting device 3 includes a latch fitting 7 and a synthetic resin latch 8 supported by the latch fitting 7. The latch fitting 7 has a plate-like base 9 straddling between the side plates 1b and 1c. A slit-like insertion hole 10 and a plurality of engaging projections 11 protruding downward around the insertion hole 10 are formed at the center of the base 9. The insertion hole 10 has a shaft support portion 10a that is curved in an arc shape at a central opening edge along the longitudinal direction thereof.
[0005]
Further, standing portions 13 a and 13 b bent upward at substantially right angles are formed at both ends of the base 9. The standing portions 13a and 13b are opposed to the side plates 1b and 1c of the instrument body 1, and locking pieces 14 that are bent inward are formed at the upper ends of the standing portions 13a and 13b. . Therefore, the latch fitting 7 is attached to the instrument body 1 by inserting the locking piece 14 into the engagement holes 5 of the side plates 1b and 1c.
[0006]
The latch 8 has a flat base 16 that slidably contacts the engaging projection 11. A shaft portion 17 extending in the thickness direction of the base 16 is formed at the center of the base 16. A lower end portion of the shaft portion 17 is led out below the base 16. A knob 18 for rotating the latch 8 is formed at the lower end of the shaft 17. The knob portion 18 has an elongated plate shape extending in the radial direction of the shaft portion 17, and a gap 19 corresponding to the plate thickness of the reflector 2 is provided between the upper end of the knob portion 18 and the lower surface of the base 16. Is formed.
[0007]
An upper end portion of the shaft portion 17 is led out above the base 16. A stopper 21 is formed on the upper end portion of the shaft portion 17. The stopper 21 has a flat plate shape extending in the radial direction of the shaft portion 17. The stopper 21 has a width dimension that can be inserted into the insertion hole 10 and is disposed in parallel with the knob 18.
[0008]
As shown in FIG. 14 and FIG. 15, the stopper 21 is inserted into the insertion hole 10 from below the base 9, and the shaft portion 17 is rotatable about the shaft in the shaft support portion 10 a of the insertion hole 10. It is mated. Therefore, when the latch 8 is rotated by 90 ° about the shaft portion 17, the stopper 21 is in a positional relationship orthogonal to the insertion hole 10, and the lower end thereof is slidably in contact with the upper surface of the base 9. 9 is sandwiched in cooperation with the base 16.
[0009]
The stopper 21 includes a pair of locking pieces 22a and 22b that protrude toward the upper surface of the base 9 at both ends along the longitudinal direction. The locking pieces 22 a and 22 b are inclined in a direction away from both end portions of the stopper 21 as approaching the upper surface of the base 9, and can be elastically deformed in a direction contacting and separating from the stopper 21. The dimension between the front ends of the locking pieces 22a and 22b is set larger than the dimension in the longitudinal direction of the insertion hole 10.
[0010]
  For this reason, when the stopper 21 of the latch 8 is inserted into the insertion hole 10 from below the base 9, the locking pieces 22 a and 22 b are elastically deformed in a direction approaching the stopper 21 with contact with both ends of the insertion hole 10, The insertion of the stopper 21 into the insertion hole 10 is allowed. When the locking pieces 22a and 22b pass through the insertion hole 10, the locking pieces 22a and 22b are expanded in a direction away from the stopper 21 by their own elasticity. As a result, as shown in FIG. 16, the tips of the locking pieces 22a and 22b are hooked on the upper surface of the base 9, and the latch 8 is prevented from coming off the latch fitting 7.Retained.
[0011]
The end 21a on the knob 18 side of the stopper 21 protrudes downward from the tips of the locking pieces 22a and 22b by an amount corresponding to the plate thickness of the base 9. For this reason, as shown in FIG. 16A, when the latch 8 is inserted into the insertion hole 10 from below the base 9, the end 21 a of the stopper 21 enters the insertion hole 10.
[0012]
In order to attach the reflector 2 to the instrument body 1 using this kind of component attachment device 3, first, the attachment hole 6 of the reflector 2 is aligned with the knob 18 of the latch 8, and the reflector 2 is attached to the instrument body 1. Push it up. As a result, the knob 18 passes through the attachment hole 6 and is exposed below the reflector 2, so that the knob 18 is gripped by the fingertip and the latch 8 is rotated 90 ° about the shaft 17.
[0013]
By this rotation, the knob 18 is positioned so as to be orthogonal to the mounting hole 6, and the knob 18 is caught on the lower surface of the reflector 2, and the reflector 2 cooperates with the lower surface of the base 9. Sandwich. At the same time, the stopper 21 of the latch 8 is positioned so as to be orthogonal to the insertion hole 10 of the base 9, and the base 9 is sandwiched between the base 16. As a result, the positional relationship between the knob 18 and the attachment hole 6 is maintained, and is connected to the lower end of the reflector 32 instrument body 1.
[0014]
[Problems to be solved by the invention]
By the way, the conventional latch 8 is inserted into the insertion hole 10 from below the base 9 with the stopper 21 at the top, and the tips of the locking pieces 22a and 22b are hooked on the upper surface of the base 9 to latch the metal fitting 7. Is retained.
[0015]
In this case, the end 21 a of the stopper 21 on the side of the knob 18 is located at the time when the knob 18 of the latch 8 is inserted into the mounting hole 6 of the reflector 2, that is, the tips of the locking pieces 22 a and 22 b are the upper surface of the base 9. At the time of being hooked, the insertion hole 10 of the latch metal fitting 7 remains. Therefore, even if the latch 8 is to be rotated, the end 21 a of the stopper 21 is caught by the opening edge of the insertion hole 10, and the latch 8 is prevented from rotating.
[0016]
Therefore, according to the conventional component mounting apparatus 3, when the latch 8 is rotated, the latch 8 is pressed toward the base 9 as shown by an arrow in FIG. Thus, there is a problem that the operability of the latch 8 is deteriorated.
[0017]
  The present invention has been made based on such circumstances, and it is not necessary to press the latch toward the latch fitting when the latch rotates, and the latch can be rotated smoothly and quickly.At the same time, the main body of the latch can be easily fitted into the fitting hole of the latch fitting.An object of the present invention is to provide a component mounting device and a lighting fixture having the component mounting device.
[0018]
[Means for Solving the Problems]
  To achieve the above objective,A component mounting apparatus according to one aspect of the present invention is,
  A latch fitting attached to the first part;,
  A latch rotatably supported by the latch fitting, and for connecting a second part to the first part;With,
  The latch has an elongated knob portion extending in a direction intersecting with the rotation axis thereof, and passes the knob portion through a long hole-shaped attachment hole opened in the second part and intersects with the attachment hole. By rotating in the direction, this knobthe aboveComponent mounting device that can be hooked to the second componentBecause
  the aboveThe latch fitting has a circular fitting hole facing the mounting hole,
  the aboveThe latch is continuous with the knob, and has a larger diameter than the knob and is rotatably fitted in the fitting hole.A cylindrical main body, and a support portion that protrudes radially outward from an end opposite to the knob portion of the main body and is slidably hooked to the opening edge of the fitting hole, While having a bottom wall that continues to the knob, a pair of lightening holes are formed at positions facing both ends of the knob on the bottom wall,
  On the outer peripheral surface of the main body, when the main body is fitted into the fitting hole in a posture with the knob portion at the top, the opening edge of the fitting hole can be slid in cooperation with the support portion. Forming multiple locking projections sandwiched betweenAnd these latching convex parts are located in the outer peripheral surface of the main body so as to correspond to the above-mentioned hollow hole.It is characterized by.
[0019]
In such a configuration, in order to attach the latch to the latch fitting, the latch body is fitted into the fitting hole of the latch fitting in a posture with the knob portion at the head. Then, the latching convex part gets over the opening edge part of the fitting hole, and the support part is slidably caught on the opening edge part of the fitting hole, and the fitting hole is formed between these supporting part and the latching convex part. The opening edge of is sandwiched. As a result, the latch is retained by the latch fitting and is held so as to be rotatable about the axis of the main body.
[0020]
In this case, since the fitting portion between the fitting hole and the main body has a circular shape that is continuous in the circumferential direction, there is no unevenness that prevents the rotation of the main body in this fitting portion. When rotating the main body, it is only necessary to hold the knob and simply rotate it. For this reason, the troublesome operation of rotating the knob while pressing the knob as in the prior art becomes unnecessary, and the rotation operation of the latch can be performed smoothly and quickly.
[0022]
  At the same time,The rigidity of the cylindrical main body can be kept low, and the main body is easily bent in the radial direction. For this reason, when the main body is fitted into the fitting hole, the locking convex portion is not easily caught by the opening edge of the fitting hole, and the resistance when the main body is fitted into the fitting hole is reduced.
  Further, since the bottom wall of the main body extends in a direction substantially orthogonal to the knob portion as the position of the lightening hole is specified, after the knob portion is inserted into the attachment hole of the second part, the knob portion is moved to 90 °. When rotated, the bottom wall of the main body faces the mounting hole of the second part. Therefore, although the hole is formed in the bottom wall of the main body, the mounting hole can be closed using this bottom wall, and the appearance in a state where the first part and the second part are connected is good. Can be maintained.
[0023]
  In order to achieve the above object, a component mounting apparatus according to another embodiment of the present invention includes:
  A latch fitting attached to the first component;
  A latch that is rotatably supported by the latch fitting and connects the second component to the first component;
  The latch has an elongated knob portion extending in a direction intersecting with the rotation axis thereof, and passes the knob portion through a long hole-shaped attachment hole opened in the second part and intersects with the attachment hole. A component mounting device that is configured to hook the knob on the second component by rotating in a direction,
  The latch fitting has a circular fitting hole facing the mounting hole,
  The latch has a cylindrical main body that is continuous with the knob and has a larger diameter than the knob and is rotatably fitted in the fitting hole. What is the knob of the main body? Formed on the opposite end is a support that protrudes radially outward of the main body and slidably hooks onto the opening edge of the fitting hole,
  A plurality of locking projections spaced apart from each other in the circumferential direction of the main body are formed on the outer peripheral surface of the main body. When fitted, the support portion cooperates with the support portion so that the opening edge of the fitting hole is slidably sandwiched, and the support portion is positioned at a position different from the locking projection on the outer peripheral surface of the main body. It is characterized by the formation of slits that are connected to each other.
[0024]
  Even in such a configuration, since the fitting portion between the fitting hole of the latch metal fitting and the main body of the latch has a circular shape that is continuous in the circumferential direction, the fitting portion prevents rotation of the main body. There is no unevenness, so when rotating the main body, it is only necessary to grasp and hold the knob. For this reason, the troublesome operation of rotating the knob while pressing the knob as in the prior art becomes unnecessary, and the rotation operation of the latch can be performed smoothly and quickly.
  Furthermore, due to the presence of slitsThe rigidity of the cylindrical main body can be kept low, and the main body is easily bent in the radial direction. For this reason, when fitting a main body into a fitting hole, a latching convex part becomes difficult to catch on the opening edge part of a fitting hole, and resistance at the time of fitting a main body into a fitting hole is reduced.
[0026]
  According to a preferred embodiment of the present invention, the support portion of the latch is, Having four notches arranged at intervals of 90 ° in the circumferential direction of the main body, these notchesTwo ofAnd the latching convex portion face each other in the axial direction of the main body, and the latch fitting has at least one convex portion located around the fitting hole and corresponding to the notch. The dimension of the height of the portion and the thickness of the latch metal fitting is characterized in that it is determined to be slightly larger than the gap dimension from the locking convex portion to the support portion.
[0027]
In such a configuration, when the main body is rotated in the direction around the axis via the knob, the notch runs on the convex portion every time the main body rotates by 90 °. A feeling can be imparted.
[0028]
In addition, since the notch and the locking projection on the outer peripheral surface of the main body face each other in the axial direction of the main body, for example, when the latch is formed of a molded product of a synthetic resin material, the notch is not provided. It can be used as a hole for die cutting. For this reason, it is not necessary to slide the molding die in the radial direction of the main body at the position corresponding to the locking projection, and the mold is molded using a molding die that can be divided in the axial direction of the main body. Can do.
[0029]
  In order to achieve the above object, a lighting apparatus according to one aspect of the present invention includes:
  Latch fittings attached to the instrument body,
  A latch that is pivotally supported by the latch fitting and connects the reflector to the instrument body;With
  The latch has an elongated knob portion extending in a direction intersecting with the rotation axis, and the knob is passed through a long hole-shaped attachment hole formed in the reflection plate and in a direction intersecting with the attachment hole. A lighting fixture in which the knob is hooked on the reflector by rotating.Because
  the aboveThe latch fitting has a circular fitting hole facing the mounting hole,
  the aboveThe latch is continuous with the knob, and has a larger diameter than the knob and is rotatably fitted in the fitting hole.A cylindrical main body, and a support portion that protrudes radially outward from an end opposite to the knob portion of the main body and is slidably hooked to the opening edge of the fitting hole, While having a bottom wall that continues to the knob, a pair of lightening holes are formed at positions facing both ends of the knob on the bottom wall,
  On the outer peripheral surface of the main body, when the main body is fitted into the fitting hole in a posture with the knob portion at the top, the opening edge of the fitting hole can be slid in cooperation with the support portion. Forms multiple locking projections sandwiched betweenAnd these latching convex parts are located in the outer peripheral surface of the main body so as to correspond to the above-mentioned hollow hole.It is characterized by.
  Furthermore, in order to achieve the said objective, the lighting fixture which concerns on the other form of this invention is the following.
  A latch fitting attached to the instrument body;
  The latch is rotatably supported by the latch fitting, and includes a latch for connecting the reflector to the instrument body,
  The latch has an elongated knob portion extending in a direction intersecting with the rotation axis, and the knob is passed through a long hole-shaped attachment hole formed in the reflection plate and in a direction intersecting with the attachment hole. By turning, it is a lighting fixture that is configured to hook both ends of this knob on the reflector,
  The latch fitting has a circular fitting hole facing the mounting hole,
  The latch has a cylindrical main body that is continuous with the knob and has a larger diameter than the knob and is rotatably fitted in the fitting hole. What is the knob of the main body? Formed on the opposite end is a support that protrudes radially outward of the main body and slidably hooks onto the opening edge of the fitting hole,
  A plurality of locking projections spaced apart from each other in the circumferential direction of the main body are formed on the outer peripheral surface of the main body. When fitted, the support portion cooperates with the support portion so that the opening edge of the fitting hole is slidably sandwiched, and the support portion is positioned at a position different from the locking projection on the outer peripheral surface of the main body. It is characterized by the formation of slits that are connected to each other.
[0030]
In such a configuration, in order to attach the latch to the latch fitting, the latch body is fitted into the fitting hole of the latch fitting in a posture with the knob portion at the head. Then, the latching convex part gets over the opening edge part of the fitting hole, and the support part is slidably caught on the opening edge part of the fitting hole, and the fitting hole is formed between these supporting part and the latching convex part. The opening edge of is sandwiched. As a result, the latch is retained by the latch fitting and is held so as to be rotatable about the axis of the main body.
[0031]
  In this case, since the fitting portion between the fitting hole and the main body has a circular shape that is continuous in the circumferential direction, there is no irregularity that prevents the rotation of the main body in the fitting portion, and the knob portion is The main body can be freely rotated by a simple gripping operation. For this reason, in connecting the reflector to the instrument body, after passing the knob portion through the attachment hole of the reflector, it may be rotated by a required angle in a direction intersecting with the attachment hole. A troublesome operation of rotating the knob while pressing the knob as in the prior art becomes unnecessary, and the reflector can be easily and reliably attached to the instrument body.
  Furthermore, due to the presence of the hollow holes or slits, the rigidity of the cylindrical main body can be kept low, and the main body is easily bent in the radial direction. For this reason, when fitting a main body into a fitting hole, a latching convex part becomes difficult to catch on the opening edge part of a fitting hole, and resistance at the time of fitting a main body into a fitting hole is reduced.
[0032]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
[0033]
FIG. 1 shows a lighting fixture 31 for a fluorescent lamp that is directly attached to the ceiling or suspended. The lighting fixture 31 includes a fixture main body 32 as a first component and a reflector 33 as a second component.
[0034]
As shown in FIGS. 2 and 3, the instrument main body 32 includes a top plate 32a and a pair of side plates 32b and 32c extending downward from the side edge of the top plate 32a. This instrument main body 32 is comprised by the sheet metal press work part which used the steel plate as the raw material, and has comprised the elongate box shape opened downward as a whole. Metal fitting holes 34 are respectively formed at a plurality of locations separated in the longitudinal direction of the side walls 32a and 32b. The metal fitting attachment hole 34 has a slit shape extending in the longitudinal direction of the instrument main body 32, and faces each other in the width direction of the instrument main body 32.
[0035]
Lamp sockets 35 (only one of which is shown in FIG. 1) are attached to both ends of the instrument body 32 along the longitudinal direction. The lamp socket 35 protrudes below the instrument body 32, and a straight tube fluorescent lamp 36 is supported between the lamp sockets 35. In addition, a lighting device and a power terminal block (both not shown) are accommodated inside the appliance main body 32.
[0036]
The reflection plate 33 is disposed between the instrument body 32 and the fluorescent lamp 36. The reflection plate 33 is composed of a sheet metal stamped part made of a steel plate. The reflection plate 33 extends along the longitudinal direction of the instrument body 32, and the surface of the reflection plate 33 facing the fluorescent lamp 36 forms a white light reflection surface 37.
[0037]
Attachment holes 38 are formed at a plurality of locations along the longitudinal direction of the reflection plate 33. The attachment hole 38 has a long hole-like opening shape extending in the longitudinal direction of the reflecting plate 33, and is positioned at the center of the reflecting plate 33 in the width direction.
[0038]
  As shown in FIGS. 1 and 3, the reflector 33 is a latch type.Component mounting deviceThe instrument body 32 is supported via 40.Component mounting device40 includes a latch fitting 41 and a latch 42 supported by the latch fitting 41.
[0039]
The latch metal fitting 41 is constituted by a sheet metal press-worked part using a steel plate thicker than the plate thickness of the instrument body 32. The latch fitting 41 has a base 43 having a flat plate shape. The base 43 has a rectangular shape extending in the width direction of the instrument main body 32. A fitting hole 44 and a pair of engaging projections 45 are formed at the center of the base 43. The fitting hole 44 has a circular opening shape and faces the mounting hole 38 of the reflection plate 33. The engaging convex portions 45 are arranged around the fitting hole 44 at an interval of 180 ° in the circumferential direction, and the engaging convex portions 45 face each other across the fitting hole 44. Yes. The engaging protrusion 45 has a hemispherical shape and protrudes upward from the upper surface of the base 43.
[0040]
At both end portions along the longitudinal direction of the base 43, contact portions 46a and 46b bent so as to project downward are formed. Standing portions 47 a and 47 b bent upward at substantially right angles are formed at the tips of the contact portions 46 a and 46 b, and these standing portions 47 a and 47 b are formed on the outer surfaces of the side plates 32 b and 32 c of the instrument main body 32. It is designed to be stacked. Locking pieces 48a and 48b bent inward are formed at the upper ends of the standing portions 47a and 47b, respectively.
[0041]
Therefore, the latch fitting 41 is supported by the instrument body 32 in a horizontal posture across the lower ends of the side plates 32b and 32c by inserting the locking pieces 48a and 48b into the fitting mounting hole 34 from the outside of the side plates 32b and 32c. The contact portions 46 a and 46 b of the base 43 are exposed downward from the instrument body 32.
[0042]
The latch 42 is formed of a molded product made of a synthetic resin material having the same color as that of the light reflecting surface 37. The latch 42 includes a cylindrical main body 50 and a knob 51 connected to the main body 50.
[0043]
The main body 50 includes a peripheral wall 50 a having a diameter that fits tightly into the fitting hole 44 of the latch fitting 41, and the axial length of the peripheral wall 50 a is set larger than the plate thickness of the base 43. At one end of the main body 50, a flange-like support portion 52 is formed that projects outward in the radial direction. The support 52 is slidably superimposed on the upper surface of the base 43 and the top of the engagement protrusion 45. Cutouts 53 a to 53 d are formed at four locations of the support portion 52. The notches 53 a to 53 d are arranged at intervals of 90 ° in the circumferential direction of the support portion 52, and these notches 53 a to 53 d are open to the outer peripheral edge portion of the support portion 52, respectively.
[0044]
As best shown in FIG. 3, a pair of locking projections 55 a and 55 b are integrally formed on the outer peripheral surface of the peripheral wall 50 a of the main body 50. The locking projections 55a and 55b are arranged at an interval of 180 ° in the circumferential direction of the peripheral wall 50a. These locking projections 55 a and 55 b protrude from the outer peripheral surface of the main body 50 and face the support portion 52. Then, when the main body 50 is fitted into the fitting hole 44 of the base 43, the locking projections 55a and 55b sandwich the opening edge of the fitting hole 44 in a slidable manner in cooperation with the support portion 52. Accordingly, the main body 50 is rotatably supported by the base 43.
[0045]
As shown in FIGS. 3B and 3D, a gap 56 having a size exceeding the plate thickness of the base 43 is formed between the locking projections 55 a and 55 b and the support portion 52. Yes. Specifically, the dimension S of the gap 56₁And a dimension S that combines the height of the engaging projection 45 and the thickness of the base 43.₂When comparing with these S₁And S₂Is
S₁<S₂
It is determined to satisfy the relationship.
[0046]
As shown in FIGS. 3A and 3B, the locking projections 55 a and 55 b are formed on the two notches 53 a and 53 c of the four notches 53 a to 53 d of the support portion 52 and the main body 50. Facing in the axial direction. For this reason, the notches 53a and 53c also serve as holes for punching the molding die when the main body 50 including the locking projections 55a and 55b is molded. It is not necessary to slide in the radial direction of the main body 50 at the portions 55a and 55b.
[0047]
As shown in FIGS. 2 and 7, the other end of the main body 50 opposite to the support portion 52 is integrally closed by a bottom wall 58. A shaft portion 59 that is coaxial with the main body 50 is formed at the center of the bottom wall 58. One end of the shaft portion 59 is introduced into the inside of the main body 50, and the other end of the shaft portion 59 is led out below the main body 50, and the knob 51 is integrated with the other end of the shaft portion 59. Is formed.
[0048]
The knob 51 has an elongated plate shape along the radial direction of the main body 50. The knob 51 includes a line segment X connecting the locking projections 55a and 55b.₁(Both shown in FIG. 5), and both ends thereof are positioned below the locking projections 55a and 55b. The knob 51 has a size that can be inserted into the fitting hole 44 of the latch fitting 41 and the mounting hole 38 of the reflector 33. The total length L of the knob 51 along the longitudinal direction is shown in FIG. As shown, it is set smaller than the diameter D of the main body 50. Therefore, the main body 50 is formed with a larger diameter than the knob portion 51.
[0049]
As shown in FIGS. 2, 5, and 6, the bottom wall 58 of the main body 50 has a pair of lightening holes 60 a and 60 b. The lightening holes 60a and 60b have a sector shape having an arcuate edge portion along the outer peripheral surface of the peripheral wall 50a, and are arranged symmetrically with the shaft portion 59 in between. The lightening holes 60 a and 60 b are arranged along the longitudinal direction of the knob 51, and face both ends of the knob 51 in the longitudinal direction. Therefore, as shown in FIG. 6, the bottom wall 58 has a belt-like shape extending in the radial direction of the main body 50 between the lightening holes 60 a and 60 b, and has a positional relationship that is orthogonal to the knob 51. It has become.
[0050]
On the peripheral edge of the bottom wall 58, a rib 61 extending upward is formed. The rib 61 extends in the radial direction of the main body 50 and continues to the peripheral wall 50 a of the main body 50 and one end of the shaft portion 59.
[0051]
The latch 42 having such a configuration is held by the latch fitting 41 by fitting the main body 50 into the fitting hole 44 in a posture with the knob 51 as the head. That is, when the main body 50 is fitted into the fitting hole 44 from above the base 43, the locking projections 55 a and 55 b first interfere with the opening edge of the fitting hole 44. At this time, in addition to the latch 42 being made of synthetic resin, the bottom wall 58 of the main body 50 is formed with the lightening holes 60a and 60b. Therefore, in the portion corresponding to the lightening holes 60a and 60b. The peripheral walls 50a of the main body 50 are not connected to each other, and accordingly, the rigidity of the main body 50 is kept low. For this reason, when the main body 50 is fitted into the fitting hole 44, the main body 50 can be bent in the radial direction, and the locking projections 55 a and 55 b are hardly caught on the opening edge of the fitting hole 44. Therefore, the operation of fitting the main body 50 into the fitting hole 44 can be easily performed.
[0052]
When the locking projections 55a and 55b get over the opening edge of the fitting hole 44, the support 52 overlaps the upper surface of the base 43, and as shown in FIG. 3, the base 43 and the locking projections 55a and 55b In between, the opening edge part of the fitting hole 44 enters. As a result, the latch 42 is rotatably held by the latch fitting 41, and the knob 51 of the latch 42 is exposed from the fitting hole 44 of the base 43.
[0053]
If the latch 42 is held by the latch fitting 41, the knob 51 rotates the latch 42 in a posture orthogonal to the longitudinal direction of the base 43. By this rotation, the notches 53a and 53c of the support portion 52 are hooked on the engagement convex portion 45, and the free rotation of the latch 42 is restricted. As a result, the latch fitting 41 is attached to the instrument main body 32 with the latch 42 held in place.
[0054]
  Next, the reflector 33 of the lighting fixture 31 isComponent mounting deviceThe procedure for attaching to the instrument body 32 using 40 will be described.
[0055]
As shown in FIG. 1, in a state where the instrument main body 32 is installed on the ceiling, first, the mounting hole 38 of the reflector 33 is aligned with the knob 51 of the latch 42, and then the reflector 33 is attached to the instrument main body 32. Push up toward. By this pushing up, the back surface of the reflecting plate 33 is abutted against the contact portions 46 a and 46 b of the base 43, and the knob 51 is protruded below the reflecting plate 33 through the attachment hole 38. Then, the knob 51 is grasped by hand, and the latch 42 is rotated 90 ° in either direction.
[0056]
By this rotation, the knob 51 is positioned so as to be orthogonal to the mounting hole 38, and both ends of the knob 51 are caught on the surface of the reflector 33, and the reflector 33 is brought into contact with the base 43. It sandwiches in cooperation with the parts 46a, 46b. As a result, the reflecting plate 33 is attached to the instrument main body 32, and the lower end of the instrument main body 32 and the latch fitting 41 are covered with the reflecting plate 33.
[0057]
When the latch 42 is rotated by 90 °, the bottom wall 58 of the belt-shaped main body 50 extends in a direction perpendicular to the knob 51, so that the bottom wall 58 faces the attachment hole 38 from the back side of the reflecting plate 33. Therefore, the mounting hole 38 that is visually recognized from below is closed using the bottom wall 58 while the bottom hole 58 is formed with the lightening holes 60 a and 60 b for facilitating the fitting of the main body 50. be able to.
[0058]
Therefore, the latch 42 itself has the same color as the light reflecting surface 37 of the reflecting plate 33, and the attachment hole 38 of the reflecting plate 33 becomes inconspicuous, and the appearance of the lighting fixture 31 is improved.
[0059]
Further, when the latch 42 is rotated by 90 °, the support portion 52 is rotated together, so that the positional relationship between the notches 53a to 53d of the support portion 52 and the engagement convex portion 45 of the base 43 is relatively. Change. That is, the notches 53 a to 53 d are arranged with a 90 ° interval in the circumferential direction of the main body 50, and the engagement convex portion 45 has a 180 ° interval in the circumferential direction of the fitting hole 44. Therefore, when the latch 42 is rotated by 90 °, the notches 53a and 53c are disengaged from the engaging convex portion 45, and then the other notches 53b and 53d are formed in the engaging convex portion 45. Get caught.
[0060]
In this case, the dimension S that combines the height of the engaging projection 45 and the thickness of the base 43.₂Is the dimension S of the gap 56 between the locking projections 55a, 55b and the support 52.₁Therefore, when the latch 42 is rotated, the edges of the cutouts 53a, 53c or 53b, 53d ride on the engaging projection 45, and a sense of moderation is given at this time. When the support portion 52 connected to the notches 53a to 53d rides on the engaging convex portion 45 due to the rotation of the latch 42, the support portion 52 is elastic as shown in FIG. 3C. And the locking projections 55 a and 55 b are strongly pressed against the opening peripheral edge of the fitting hole 44.
[0061]
When the rotation angle of the latch 42 reaches 90 °, the support portion 52 passes over the engagement convex portion 45 and the engagement convex portion 45 is fitted in the notches 53a, 53c or 53b, 53d. A feeling is given. Therefore, a feeling of moderation is given at each of the start of the rotation of the latch 42 and the completion of the rotation, and it is recognized without looking at the direction of the knob 51 whether or not the latch 42 has been rotated 90 °. be able to.
[0062]
According to such a component mounting device 40, the fitting portion between the fitting hole 44 of the base 43 and the main body 50 has a circular shape that is continuous in the circumferential direction. There is no unevenness that hinders movement, and when the main body 50 is rotated, it is only necessary to hold the knob 51 by hand and turn it 90 degrees in either direction.
[0063]
For this reason, when connecting the reflecting plate 33 to the instrument body 32, the knob 51 of the latch 42 is passed through the mounting hole 38 of the reflecting plate 33 and then rotated 90 ° in a direction perpendicular to the mounting hole 38. What is necessary is that a troublesome operation of rotating the latch 42 while pushing up the knob 51 as in the prior art becomes unnecessary.
[0064]
Therefore, the latch 42 can be rotated smoothly and quickly only by turning the knob 51, and the reflector 33 can be easily and reliably attached to the instrument body 32.
[0065]
  Further, the locking protrusions 55a and 55b on the outer peripheral surface of the main body 50 and the notch in the support portion 5253a, 53cAre opposed to each other in the axial direction of the main body 50.53a, 53cCan be used as a hole for die cutting. For this reason, when the latch 42 is molded, the mold for molding may be divided in the axial direction of the main body 50, and the divided structure of the mold and the alignment direction are simplified correspondingly, thereby reducing the cost of the mold. As a result, the manufacturing cost of the latch 42 can be reduced.
[0066]
In the first embodiment, the main body is easily bent by forming a lightening hole in the bottom wall of the main body. However, in addition to the lightening hole, the outer peripheral surface of the main body is connected to the support portion. A plurality of slits may be formed so that the main body can be bent more easily in the radial direction.
[0067]
The present invention is not limited to the first embodiment described above, and FIGS. 8 to 13 show a second embodiment of the present invention.
[0068]
In the second embodiment, the shape of the main body 50 of the latch 42 is mainly different from that of the first embodiment, and other basic configurations of the latch 42, the latch fitting 41, and the lighting fixture 31 are the same. Is the same as in the first embodiment. Therefore, in the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
[0069]
As shown in FIG. 10, a pair of slits 72 a and 72 b are formed on the peripheral wall 50 a of the main body 50 at positions away from the locking projections 55 a and 55 b. The slits 72 a and 72 b are arranged at an interval of 180 ° in the circumferential direction of the main body 50, and face each other in the radial direction of the main body 50. The slits 72 a and 72 b extend in the axial direction of the main body 50, open to a support portion 52 continuous with the main body 50, and continue to the notches 53 b and 53 d. Therefore, the slits 72 a and 72 b and the locking projections 55 a and 55 b are alternately arranged at an angle of 90 ° in the circumferential direction of the main body 50.
[0070]
The slits 72 a and 72 b penetrate the peripheral wall 50 a of the main body 50. The opening edges of the slits 72a and 72b are connected to each other via connecting walls 73a and 73b extending in the radial direction of the main body 50. The connecting walls 73a and 73b extend along the radial direction of the main body 50, and a groove 74 that divides the main body 50 in the radial direction is formed between the connecting walls 73a and 73b.
[0071]
Further, since the latch 42 is formed of a molded product of synthetic resin material, the bottom wall 58 of the main body 50 is formed with a through hole 75 for punching when the knob portion 51 is molded. Yes. The through hole 75 has a long hole shape extending in the radial direction of the main body 50 and is continuous with the groove 74.
[0072]
Further, the base 43 of the latch fitting 41 has four engagement convex portions 76 around the fitting hole 44. These engaging convex portions 76 are arranged at intervals of 90 ° in the circumferential direction of the fitting hole 44 so as to correspond to the notches 53 a to 53 d of the main body 50. For this reason, when the main body 50 is rotated by 90 °, the notches 53a to 53d and the engaging protrusions 76 are engaged with each other at the start of the rotation and at the completion of the rotation, respectively, thereby enhancing the sense of moderation. It has come to be.
[0073]
According to such a configuration, since the slits 72a and 72b extending in the axial direction of the main body 50 are formed at two positions of the peripheral wall 50a of the main body 50 facing each other, the rigidity of the cylindrical main body 50 can be kept low. The main body 50 can be easily bent in the radial direction.
[0074]
For this reason, when the main body 50 is fitted into the fitting hole 44 of the base 43, the locking projections 55 a and 55 b are not easily caught by the opening edge of the fitting hole 44. The resistance at the time of fitting into the device is reduced, and the assembly work of the component mounting device 40 can be easily performed.
[0075]
Note that the component mounting device according to the present invention is not limited to the one that mounts the fixture body of the lighting fixture and the reflecting plate, and can of course be applied for mounting components in various other fields.
[0076]
【The invention's effect】
According to the present invention described in detail above, there is no unevenness that prevents the rotation of the main body in the fitting portion between the fitting hole of the base and the main body. Since it is only necessary to grasp and rotate it in any direction by a required angle, there is no need for troublesome operations such as rotating the knob while pushing up the knob as in the prior art.
[0077]
  Therefore, the latch can be rotated smoothly and quickly by simply turning the knob,1st component (equipment body) and 2nd component (reflector)Easy and reliable to installit can.
  In addition, since the rigidity of the cylindrical main body can be kept low, the main body is easily bent in the radial direction, and when the main body is fitted into the fitting hole, the locking convex portion is the opening edge of the fitting hole. It becomes difficult to get caught in. Therefore, there is an advantage that the resistance when the main body is fitted into the fitting hole can be reduced, and the fitting operation of the main body into the fitting hole can be easily performed.
[Brief description of the drawings]
FIG. 1 is a perspective view of a lighting fixture according to a first embodiment of the present invention.
FIG. 2 is an exploded perspective view showing the positional relationship of an instrument main body, a reflector, and a component mounting apparatus that connects both of them.
FIG. 3A is a cross-sectional view of a lighting fixture showing a state where a reflector is attached to the fixture body via a component mounting device.
(B) is sectional drawing which expands and shows the 3F part of (A) of FIG.
(C) is sectional drawing which shows the state which the support part of the main body got on the engagement convex part.
(D) is sectional drawing which shows the state in which the support part of the main body was hooked in the fitting hole of the base.
FIG. 4 is a perspective view of the component mounting device showing a state in which the latch and the latch fitting are separated.
FIG. 5 is a plan view of the component mounting device as viewed from the support side.
FIG. 6 is a bottom view of the component mounting device as viewed from the knob portion side.
7 is a cross-sectional view taken along line 7F-7F in FIG.
FIG. 8 is an exploded perspective view showing the positional relationship of an instrument main body, a reflector, and a component mounting device that couples both in the second embodiment of the present invention.
FIG. 9 is a cross-sectional view of a lighting fixture showing a state in which a reflector is attached to the fixture body via a component attachment device.
FIG. 10 is a perspective view of the component mounting device showing a state in which the latch and the latch fitting are separated.
FIG. 11 is a plan view of the component mounting device when the latch and the latch fitting are viewed from the direction of the support portion.
FIG. 12 is a bottom view of the component mounting device when the latch and the latch fitting are viewed from the direction of the knob.
13 is a cross-sectional view taken along line 11F-11F in FIG.
FIG. 14 is an exploded perspective view showing the positional relationship of a fixture main body, a reflector, and a component mounting device that connects both of them in a conventional lighting fixture.
FIG. 15 is a perspective view of the component mounting device showing a state in which the latch and the latch fitting are separated.
FIG. 16A is a cross-sectional view of the component mounting device showing a state in which the latch is inserted into the insertion hole of the latch fitting from below.
(B) is sectional drawing of the component attachment apparatus which shows the state which pushes up a latch and rotates it.
[Explanation of symbols]
  DESCRIPTION OF SYMBOLS 31 ... Lighting fixture, 32 ... 1st component (equipment main body), 33 ... 2nd component (reflector), 36 ... Light source (fluorescent lamp), 38 ... Mounting hole, 40 ... Component mounting apparatus, 41 ... Latch Metal fittings 42... Latch 44. Fitting hole 50.

Claims

A latch fitting attached to the first component ;
The latch bracket to rotatably supported, provided with a latch for coupling the second component to the first component,
The latch has an elongated knob portion extending in a direction intersecting with the rotation axis thereof, and passes the knob portion through a long hole-shaped attachment hole opened in the second part and intersects with the attachment hole. by rotating in a direction, the knob portion in the component mounting apparatus that hooked on the second part,
The latch fitting has a circular fitting hole facing the mounting hole,
The latch is connected to the knob, and has a cylindrical main body that has a larger diameter than the knob and is rotatably fitted in the fitting hole. The latch is opposite to the knob of the main body. A support portion that protrudes radially outward from the end of the main body and is slidably hooked to the opening edge of the fitting hole, and the main body has a bottom wall that continues to the knob, A pair of lightening holes are formed at positions facing both ends of the knob on the bottom wall,
On the outer peripheral surface of the body, the body when fitted into the fitting hole in a posture in which the beginning the knob portion, in cooperation with the support portion can slide opening edge of the fitting hole A plurality of locking projections sandwiched between the plurality of locking projections, and the locking projections are positioned on the outer peripheral surface of the main body so as to correspond to the above-mentioned hollow holes .

A latch fitting attached to the first component;
A latch that is pivotally supported by the latch fitting and connects the second part to the first part, and
The latch has an elongated knob portion extending in a direction intersecting with the rotation axis thereof, and passes the knob portion through a long hole-shaped attachment hole opened in the second part and intersects with the attachment hole. In the component mounting apparatus adapted to hook this knob on the second component by rotating in the direction,
The latch fitting has a circular fitting hole facing the mounting hole,
The latch has a cylindrical main body that is continuous with the knob and has a larger diameter than the knob and is rotatably fitted in the fitting hole. What is the knob of the main body? Formed on the opposite end is a support that protrudes radially outward of the main body and slidably hooks onto the opening edge of the fitting hole,
A plurality of locking projections spaced apart from each other in the circumferential direction of the main body are formed on the outer peripheral surface of the main body. When fitted, the support portion cooperates with the support portion so that the opening edge of the fitting hole is slidably sandwiched, and the support portion is positioned on the outer peripheral surface of the body different from the locking projection. A component mounting device characterized in that a slit is formed in a row.

The support portion according to claim 1 or 2, wherein the support portion includes four notches arranged at intervals of 90 ° in the circumferential direction of the main body, and two of the notches and the above-described notches. The locking projections face each other in the axial direction of the main body, and the latch fitting has at least one projection corresponding to the notch located around the fitting hole. The component mounting apparatus, wherein a dimension obtained by combining a height of the convex part and a thickness of the latch fitting is determined to be slightly larger than a gap dimension from the locking convex part to the support part.

A latch fitting attached to the instrument body;
The latch is rotatably supported by the latch fitting, and includes a latch for connecting the reflector to the instrument body,
The latch has an elongated knob portion extending in a direction intersecting with the rotation axis, and the knob is passed through a long hole-shaped attachment hole formed in the reflection plate and in a direction intersecting with the attachment hole. In the lighting fixture in which the knob is hooked on the reflecting plate by turning,
The latch fitting has a circular fitting hole facing the mounting hole,
The latch is connected to the knob, and has a cylindrical main body that has a larger diameter than the knob and is rotatably fitted in the fitting hole. The latch is opposite to the knob of the main body. A support portion that protrudes radially outward from the end of the main body and is slidably hooked to the opening edge of the fitting hole, and the main body has a bottom wall that continues to the knob, A pair of lightening holes are formed at positions facing both ends of the knob on the bottom wall,
On the outer peripheral surface of the main body, when the main body is fitted into the fitting hole in a posture with the knob portion at the top, the opening edge of the fitting hole can be slid in cooperation with the support portion. The lighting fixture characterized by forming a plurality of locking projections sandwiched between, and being positioned on the outer peripheral surface of the main body so as to correspond to the hollow holes.

A latch fitting attached to the instrument body ;
The latch is rotatably supported by the latch fitting , and includes a latch for connecting the reflector to the instrument body,
The latch has an elongated knob portion extending in a direction intersecting with the rotation axis, and the knob is passed through a long hole-shaped attachment hole formed in the reflection plate and in a direction intersecting with the attachment hole. In the lighting fixture in which the knob is hooked on the reflecting plate by turning,
The latch fitting has a circular fitting hole facing the mounting hole,
The latch has a cylindrical main body that is continuous with the knob and has a larger diameter than the knob and is rotatably fitted in the fitting hole. What is the knob of the main body? Formed on the opposite end is a support that protrudes radially outward of the main body and slidably hooks onto the opening edge of the fitting hole,
A plurality of locking projections spaced apart from each other in the circumferential direction of the main body are formed on the outer peripheral surface of the main body. When fitted, the support portion cooperates with the support portion so that the opening edge of the fitting hole is slidably sandwiched, and the support portion is positioned at a position different from the locking projection on the outer peripheral surface of the main body. A luminaire characterized by forming a slit connected to the .

The support part according to claim 4 or 5, wherein the support part has four notches arranged at intervals of 90 ° in the circumferential direction of the main body, and two of the notches and the above-mentioned notch. The locking projections face each other in the axial direction of the main body, and the latch fitting has at least one projection corresponding to the notch located around the fitting hole. The luminaire characterized in that the dimension of the height of the convex part and the thickness of the latch fitting is determined to be slightly larger than the gap dimension from the locking convex part to the support part.