JP3712784B2

JP3712784B2 - Part locking structure

Info

Publication number: JP3712784B2
Application number: JP13780296A
Authority: JP
Inventors: 伸通西浜; 嘉憲福島; 賢今井
Original assignee: Matsushita Electric Works Ltd
Current assignee: Panasonic Electric Works Co Ltd
Priority date: 1996-05-31
Filing date: 1996-05-31
Publication date: 2005-11-02
Anticipated expiration: 2016-05-31
Also published as: JPH09320328A

Description

【０００１】
【発明の属する技術分野】
この発明は、引掛シーリングを利用して取付ける照明器具等に適用される部品の係止構造に関するものである。
【０００２】
【従来の技術】
第１の従来例を図１６および図１７に示す。すなわち、引掛シーリングボディ１０１に引っ掛けるアダプタ１０２の外周に逆Ｌ字形の係止溝１１１を形成し、先端に雌型のコネクタ１１２を設ける。アダプタ１０２の引掛爪１０８を引掛シーリングボディ１０１に引掛けた後、ホルダ１１３をアダプタ１０２に嵌合し、係止爪１１４が係止溝１１１に係合するようにホルダ１１３を差込み回転する。ホルダ１１３は、器具支持部を上端に有する筒形の内カバー１２０と、内カバー１２０にスライド自在に外嵌し係止溝１１１に係止する係止爪１１４を有する外カバー１２３と、内カバー１２０と外カバー１２３間に介在されたコイルばねを用いたばね１２４とを備えている。
【０００３】
そして、ホルダ１１３をアダプタ１０２に装着する際、器具本体１２７をセットし、ホルダ１１３をアダプタ１０２に押し上げて回すことにより器具本体１２７を天井１００とホルダ１１３との間に保持する。また器具本体１２７の点灯回路（図示せず）に接続されたコード１２８の雄型のコネクタ１２６をコネクタ１１２に接続する。１３３は天井１００との密着性を増すためのウレタン等の緩衝材である。
【０００４】
第２の従来例を図１８に示す。すなわち、このランプ口金１４０をソケット受け金１４１に装着する係止構造は、ランプ口金１４０に係止爪１４２を設け、ソケット受け金１４１にＬ形の係止溝１４３を形成し、矢印のように係止爪１４２を係止溝１４３に差込み回転して係止するものである。
【０００５】
【発明が解決しようとする課題】
第１の従来例および第２の従来例は、いずれも係止爪１１４，１４２を図１９に示すように係止溝１１１，１４３の上下方向に導く溝１４５と、引続き水平方向に導く溝１４６と、ばねの圧力などにより係止爪１１４等を押し付けて固定保持する溝１４７からなる。
【０００６】
しかし、このような係止構造では、係止爪１１４等を係止溝１１１等の溝１４５に一杯まで押し込んでから、なおかつその押し込み量を維持したままで溝１４６を回動により通過させ、最終的に溝１４７まで導いてやらねばならない。
このため照明器具を装着する動作の間、連続して大きな力を加え続ける必要があり、図１６に示すような照明器具を取付けるには、器具が重いことや、天井１００に取付けるための脚立などに登って高所作業を行なうので足場が不安定なこともあり取付けにくいという欠点あった。
【０００７】
さらに、装着動作の途中で、作業を中断しても係止爪１１４等が溝１４６にあれば、少なくもとも上下方向の動きは規制されるので、あたかも係合が完了したかのうよな錯覚を起こすおそれがある。このような中途半端な状態で保持されると使用中に溝１４５に向かう方向の外力が加わったりすると、係合が外れ、部品が落下し事故につながるおそれもある。
【０００８】
したがって、この発明の目的は、操作性がよく部品同志が仮掛りしない部品の係止構造を提供することである。
【０００９】
【課題を解決するための手段】
請求項１記載の部品の係止構造は、第１の円筒部を有しこの第１の円筒部の外周に第１の係合突起を有する第１の部品と、前記第１の円筒部の外径よりも大きい内径の第２の円筒部を有し前記第１の円筒部と前記第２の円筒部を相嵌合し回転することにより前記第１の係合突起が抜止め係止する第２の係合突起を内周に有する第２の部品と、前記第１の係合突起と前記第２の係合突起とを係止する方向に付勢するばねとを備え、
前記第１の係合突起はガイド斜面を斜面とした略三角形状部を有し、前記第２の係合突起は前記ガイド斜面に摺接するガイド斜面を斜面とした略三角形状部とこれに連続して前記第１の係合突起の前記略三角形状部が嵌合可能な略Ｖ字形の溝部を有し、
前記第１の円筒部と前記第２の円筒部とを相対的に回転する際に、前記ばねのばね力に抗して前記第１の係合突起の前記ガイド斜面と前記第２の係合突起の前記ガイド斜面とが摺動して前記第１の係合突起が前記第２の係合突起の溝部に嵌合するようにしたものである。
【００１０】
請求項１記載の部品の係止構造によれば、第１の円筒部と第２の円筒部を嵌合し回動することにより、第１の係合突起と第２の係合突起がばね力に抗してガイド斜面を摺動しこれを乗り越えて係止する。この場合、ガイド斜面の摺動が終えた位置で係止し、第１の部品と第２の部品の装着が完了するが、それまではガイド斜面で相互に接触しかつ互いに外れる方向にばね圧が掛かっているので、不完全な装着状態であり手を離してもすぐに第１の部品と第２の部品が外れ、仮掛りが生じることがなく、不完全な状態での嵌合が生じることがなく、器具などの落下の恐れがない。またガイド斜面に沿って第１の係合突起と第２の係合突起とが相対的に移動するにつれて、除々にばね力による荷重が加わるため、第２の部品を第１の部品に入れやすい。
【００１１】
請求項２記載の部品の係止構造は、請求項１において、前記第１の係合突起および前記第２の係合突起はそれぞれ一対有し、前記一対の第２の係合突起を回転角１８０度離し、前記一対の第１の係合突起を回転角１８０度より若干小さい角度離したものである。
請求項２記載の部品の係止構造によれば、請求項１の効果のほか、第１の係合突起に対する第２の係合突起の位置を相対的に若干ずらすこと、たとえば第１の係合突起を回転角１８０度から少しずらして開離し、第２の係合突起を回転角１８０度に開離することにより、万が一、一方の第１の係合突起と第２の係合突起の係合におけるガイド斜面の頂部で仮掛りが生じてしまっても、他方の第１の係合突起と第２の係合突起の係合におけるガイド斜面の頂部の位置がずれており、かつ外れ方向へのばね圧がかかっているので、不完全装着が生じにくくなる。
【００１２】
請求項３記載の部品の係止構造は、請求項１または請求項２において、前記第１の係合突起および前記第２の係合突起は係止状態で前記第１の円筒部と前記第２の円筒部の軸方向に相接触する平面部を有するものである。
請求項３記載の部品の係止構造によれば、請求項１または請求項２の効果のほか、第１の部品と第２の部品の装着後は平面部同志のみで係合することができるので、比較的強度の弱いガイド斜面の頂部を傷めるおそれがなく、また軸方向に向いた平面同志の係合になるので安定性がよく、第１の部品と第２の部品が傾かず見栄えがよいとともに、樹脂で部品を形成した場合でも単位面積当たりにかかる力を小さくできるので破損しにくく、またクリープ現象による変形も生じにくくなる。
【００１３】
【発明の実施の形態】
この発明の第１の実施の形態を図１ないし図１３により説明する。すなわち、この照明器具に適用した部品の係止構造は、第１の部品であるアダプタ１と、第２の部品であるホルダ２とを有する。
アダプタ１は、第１の円筒部６を有し、この第１の円筒部６の外周に第１の係合突起７を有する。実施の形態では、天井３等に施設された引掛シーリングボディ４に引っ掛ける引掛爪５を上端に有する引掛シーリング部４ａと、これより垂下する第１の円筒部６からなり、第１の円筒部６が負荷給電部を構成している。第１の円筒部６は白熱ランプソケットの筒状の受金部としてあり、図４に示すように雌ねじ部６ａに中心接触片１４と側面接触片１５を配設している。第１の係合突起７はガイド斜面７ａをその一側に形成して頂部に三角形状部７′を形成するとともに、ガイド斜面７ａよりも突出して軸方向に垂直な平面部７ｂを形成している。また、一対の引掛爪５は図４に示すように取付ねじ５１により取付けられ、その内端部分を中心接触片１４および側面接触片１５にかしめ接続している。９はロック爪１０を出没するロック解除ボタンであり、ロック解除ボタン９を押してロック爪１０を後退した状態で引掛シーリングボディ４に引掛爪５を引掛け、ロック解除ボンタ９を離すことにより、ばねでロック爪１０を突出させ引掛シーリングボディ４の凹部（図示せず）に係止して引掛シーリングボディ４の回転を規制し、これによりアダプタ１の不用意な外れを防止している。１１はフランジ仮保持用つばであり、図３に示すようにフランジ１２の仮保持用爪１３が引っ掛かることができる。１ａは引掛爪５を引掛シーリングボディ４に引掛けやすくするための引掛シーリングの合わせマーク、１６は第１の円筒部６に装着されたランプである。
【００１４】
ホルダ２は、第１の円筒部６の外径よりも大きい内径の第２の円筒部１７を有し、第１の円筒部６と第２の円筒部１７を相嵌合し回転することにより、第１の係合突起７が抜止め係止する第２の係合突起８を内周に有する。また第１の係合突起７と第２の係合突起８とを係止する方向に付勢するばね２０を有し、第１の円筒部６と第２の円筒部１７とを相対的に回転する際に、ばね２０のばね力に抗して第１の係合突起７のガイド斜面７ａと摺接して係止位置に案内するガイド斜面８ａを第２の係合突起８に形成しているが、ガイド斜面７ａ，８ａはいずれか一方のみでもよい。また第２の係合突起８は係止状態で第１の円筒部７の平面部７ｂと軸方向に相接触する平面部８ｂを有する。
【００１５】
実施の形態のホルダ２は、アダプタ１に外挿する筒状であって、第２の円筒部１７を内筒としてこれに連結された外筒１８を有し、第２の円筒部１７と外筒１８との間に軸方向に移動自在な器具本体支持用の移動部材１９を有し、ばね２０は移動部材１９を引掛シーリングボディ４側に付勢している。さらに具体的に説明すると、第２の円筒部１７は移動部材１９で器具を押し上げていない状態で移動部材１９よりも寸法ｅだけ第２の円筒部１７が高くなっている。また第２の円筒部１７と外筒１８は、引掛シーリングボディ４から離れた側につなぎ部２１により一体に形成され、つなぎ部２１に孤状の長孔２１ａを形成している。外筒１８は第２の円筒部１７よりも図８に示すように寸法ｆだけ低く、かつ外周面に操作用凹凸２２を設けている。第２の円筒部１７は外周面に移動部材１９をスライド自在に係止するための係止溝（図示せず）を設け、内周面にアダプタ２の第１の係合突起７と係合する第２の係合突起８を設けている。この第２の係合突起８は第１の係合突起７の突起の略三角形状部７′と係合し得る略Ｖ字形の溝部を有し、略三角形状部７′の１辺を形成するガイド斜面７ａをガイドするガイド斜面８ａを溝部の外側に形成し、このため溝部の縁部に略三角形状部８′を形成している。したがって、図２に示すように第１の係合突起７のガイド斜面７ａがガイド斜面８ａに当接した状態で移動部材１９を回動するにつれて第１の係合突起７がガイド斜面８ａをすべり上がり、ガイド斜面８ａを乗り越えたところで図１に示すように、第２の係合突起８の略Ｖ字形の溝部に係止し、不完全な取付状態では後述のばね２０の力によりホルダ２が外れる方向に移動するようにしている。さらに第１の係合突起７と第２の係合突起８との係止状態では、平面部７ｂ，８ｂ同志が係止し、第１の係合突起７の略三角形状部と第２の係合突起８の溝部とは若干離れている。
【００１６】
また第１の係合突起７をガイドしながら第２の円筒部７内に導入するための溝３５を第２の円筒部１７の内周面の軸方向の全長にわたって形成し、この溝３５の入口をとくに幅広くしてガイド性を良くし、また溝３５の数を４個とし第１の係合突起７の２個よりも多く形成している。なお、ホルダ２をアダプタ１に取付けるとき、第１の係合突起７と第２の係合突起８とが係止するための回動方向をアダプタ１を引掛シーリングボディ４に取付けるときの回動方向に合わせているので、ホルダ２を取付けたときにアダプタ１がゆるむことがない。
【００１７】
移動部材１９は、第２の円筒部１７と外筒１８との間に嵌合して軸方向のみが移動可能となるように構成されるもので、略円筒形をなし、グローブ４１等の器具を支持する器具支持部２４を図の上端の外周側に設け、第２の円筒部１７の外周面に摺接するとともにばね受けおよび第２の円筒部１７の抜止め部３０への係止を兼用した複数の突部１９ａを内周面に突出し、さらに第２の円筒部１７の端部より移動部材１９を外挿して係止溝にスライド自在に係止する弾性体（図示せず）を内周面に設け、この状態で突部１９ａが抜止め部３０に係止可能にしている。またこの突部１９ａの間のすき間と長孔２１ａとを通して第２の円筒部１７と移動部材１９の間をランプ熱が上昇でき、ホルダ２の温度上昇を抑えている。
【００１８】
移動部材１９の器具支持部２４は、移動部材１９の周方向に略等間隔に複数すなわち少なくとも３個に分断され、外筒１８の外径と略同じになるように突出している。また移動部材１９の器具支持部２４より下の高さを外筒１８の高さよりも低くしている。すなわち、図８に示すように外筒１８の高さｃとし、移動部材１９の器具支持部２４より下の高さｄとするとき、ｃ＞ｄとしている。
【００１９】
この移動部材１９は熱可塑性樹脂製の成形品で射出成形により製作され、かつ器具支持部２４の各々の略中央部に対応した移動部材１９の端面にゲートを設けている。３１は成形品上のゲート位置である。
ばね２０は、第２の円筒部１７と外筒１８との間に配置され、つなぎ部２１と移動部材１９との間で圧縮することにより移動部材１９を付勢している。実施例ではコイルばねを用いている。
【００２０】
またフランジ１２をアダプタ１に仮保持してから、グローブ４１とホルダ２を両手に持ち、ホルダ２の取付け作業を行なう。ホルダ２の取付け状態でフランジ１２がばね２０に付勢された移動部材１９の器具支持部２４により天井３に押付けられ、これによりフランジ１２およびグローブ４１が固定される。
このようにして、アダプタ１とホルダ２とにより構成される器具支持体により、フランジ１２とグローブ４１とを支持する白熱灯１灯用の器具が構成される。
【００２１】
なお、グローブ４１の内径は第２の円筒部１７の外径に近いので遊び量が規制されている。またフランジ１２はグローブ４１により位置規制されているので、グローブ４１が位置規制されるとフランジ１２も位置規制される。さらに器具支持部２４を外筒１８の外径程度まで突出させて位置規制も行なっているので、器具支持部２４の上にグローブ４１やフランジ１２の縁を載せることができ、確実に器具の保持ができる。
【００２２】
この実施の形態によれば、第１の円筒部６と第２の円筒部１７を嵌合し回動することにより、第１の係合突起７と第２の係合突起８がばね力に抗してガイド斜面７ａ，８ａを摺動しこれを乗り越えて係止する。この場合、ガイド斜面７ａ，８ａの摺動が終えた位置で係止し、第１の部品のアダプタ１と第２の部品のホルダ２の装着が完了するが、それまではガイド斜面７ａ，８ａで相互に接触しかつ互いに外れる方向にばね圧が掛かっているので、不完全な装着状態であり手を離してもすぐに第１の部品と第２の部品が外れ、仮掛りが生じることがなく、不完全な状態での嵌合が生じることがなく、器具などの落下の恐れがない。
【００２３】
またガイド斜面７ａ，８ａに沿って第１の係合突起７と第２の係合突起８とが相対的に移動するにつれて、除々にばね力による荷重が加わるため、第２の部品を第１の部品に入れやすい。すなわち、図１３（ａ）に示すように従来例では、装着スタートから装着完了まで最大荷重を維持したままでホルダ２を回動する必要があるのに対して、この実施の形態では図１３（ｂ）に示すようにガイド斜面７ａ，８ａが接触するところまでの荷重を加えたあとはホルダ２を回動するにつれて押上力が増していく。図の一点鎖線で示した部分だけ装着動作に必要なエネルギが少なくなる。このため、ホルダ２をアダプタ１に係止しやすいのである。
【００２４】
また第１の係合突起７および第２の係合突起８は係止状態で第１の円筒部６と第２の円筒部１７の軸方向に相接触する平面部７ｂ，８ｂを有するため、第１の部品と第２の部品の装着後は平面部７ｂ，８ｂ同志のみで係合することができるので、比較的強度の弱いガイド斜面７ｂの三角形状部７′，８′の頂部を傷めるおそれがなく、また軸方向に向いた平面同志の係合になるので安定性がよく、第１の部品と第２の部品が傾かず見栄えがよいとともに、樹脂で部品を形成した場合でも単位面積当たりにかかる力を小さくできるので破損しにくく、またクリープ現象による変形も生じにくくなる。
【００２５】
この発明の第２の実施の形態を図１４に示す。すなわち、この部品の係止構造は、第１の実施の形態において、第１の係合突起７および第２の係合突起８がそれぞれ一対有し、第１の係合突起７と第２の係合突起８の位置関係が周方向に若干ずれているものである。
図１４では、一対の第１の係合突起７を回転角１８０度から小さい角度αだけずらして開離し、一対の第２の係合突起８を回転角１８０度離している。
【００２６】
この実施の形態によれば、万が一、一方の第１の係合突起７と第２の係合突起８の係合におけるガイド斜面７ａ，８ａの略三角形状部７′，８′の頂部で仮掛りが生じてしまっても、他方の第１の係合突起７と第２の係合突起８の係合におけるガイド斜面７ａ，８ａの頂部の位置がずれており、かつ外れ方向へのばね圧がかかっているので、不完全装着が生じにくくなる。
【００２７】
この発明の第３の実施の形態を図１５に示す。すなわち、この部品の係止構造は、第１の実施の形態において、第１の係合突起７および第２の係合突起８をそれぞれ１個にしたものである。
この実施の形態は、第２の円筒部１７と第１の円筒部６との係合のバランスが悪く、ホルダ２が傾きはするものの、ガイド斜面７ａ，８ａの頂部同志が２箇所以上同時に仮掛りすることがなく、また仮掛り状態でのバランスもとれないので、第１の実施の形態に比べて仮掛りが生じにくい。
【００２８】
【発明の効果】
請求項１記載の部品の係止構造によれば、第１の円筒部と第２の円筒部を嵌合し回動することにより、第１の係合突起と第２の係合突起がばね力に抗してガイド斜面を摺動しこれを乗り越えて係止する。この場合、ガイド斜面の摺動が終えた位置で係止し、第１の部品と第２の部品の装着が完了するが、それまではガイド斜面で相互に接触しかつ互いに外れる方向にばね圧が掛かっているので、不完全な装着状態であり手を離してもすぐに第１の部品と第２の部品が外れ、仮掛りが生じることがなく、不完全な状態での嵌合が生じることがなく、器具などの落下の恐れがない。またガイド斜面に沿って第１の係合突起と第２の係合突起とが相対的に移動するにつれて、除々にばね力による荷重が加わるため、第２の部品を第１の部品に入れやすい。
【００２９】
請求項２記載の部品の係止構造によれば、請求項１の効果のほか、第１の係合突起に対する第２の係合突起の位置を相対的に若干ずらすこと、たとえば第１の係合突起を回転角１８０度から少しずらして開離し、第２の係合突起を回転角１８０度に開離することにより、万が一、一方の第１の係合突起と第２の係合突起の係合におけるガイド斜面の頂部で仮掛りが生じてしまっても、他方の第１の係合突起と第２の係合突起の係合におけるガイド斜面の頂部の位置がずれており、かつ外れ方向へのばね圧がかかっているので、不完全装着が生じにくくなる。
【００３０】
請求項３記載の部品の係止構造によれば、請求項１または請求項２の効果のほか、第１の部品と第２の部品の装着後は平面部同志のみで係合することができるので、比較的強度の弱いガイド斜面の頂部を傷めるおそれがなく、また軸方向に向いた平面同志の係合になるので安定性がよく、第１の部品と第２の部品が傾かず見栄えがよいとともに、樹脂で部品を形成した場合でも単位面積当たりにかかる力を小さくできるので破損しにくく、またクリープ現象による変形も生じにくくなる。
【図面の簡単な説明】
【図１】この発明の第１の実施の形態の係合を示す説明図である。
【図２】その係合前の状態の説明図である。
【図３】照明器具の正面図である。
【図４】そのアダプタの半断面側面図である。
【図５】その第１の円筒部の部分断面図である。
【図６】アダプタの底面図である。
【図７】ホルダの平面図である。
【図８】その半断面正面図である。
【図９】その外筒の外周面の凹凸を示す説明図である。
【図１０】ホルダをアダプタに接続する前の斜視図である。
【図１１】ホルダの下端側からみた斜視図である。
【図１２】第１の係合突起の斜視図である。
【図１３】回動量に対するホルダを押し上げる力の従来例と実施の形態のグラフである。
【図１４】第２の実施の形態のアダプタの底面図である。
【図１５】第３の実施の形態のアダプタの底面図である。
【図１６】第１の従来例の部分断面図である。
【図１７】そのアダプタにホルダを接続する前の斜視図である。
【図１８】第２の従来例のランプ口金とソケット受け金を示す部分斜視図である。
【図１９】従来例の係止溝の説明図である。
【符号の説明】
１第１の部品であるアダプタ
２第２の部品であるホルダ
６第１の円筒部
７第１の係合部
７ａガイド斜面
７ｂ平面部
８第２の係合部
８ａガイド斜面
８ｂ平面部
１７第２の円筒部
１８外筒
１９移動部材
２０ばね[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a component locking structure applied to a lighting fixture or the like that is attached using a hook ceiling.
[0002]
[Prior art]
A first conventional example is shown in FIGS. That is, an inverted L-shaped locking groove 111 is formed on the outer periphery of the adapter 102 to be hooked on the hooking sealing body 101, and a female connector 112 is provided at the tip. After the hooking claw 108 of the adapter 102 is hooked on the hooking sealing body 101, the holder 113 is fitted into the adapter 102, and the holder 113 is inserted and rotated so that the locking claw 114 engages with the locking groove 111. The holder 113 includes a cylindrical inner cover 120 having an instrument support at the upper end, an outer cover 123 having a locking claw 114 that is slidably fitted to the inner cover 120 and locked to the locking groove 111, and an inner cover 120 and a spring 124 using a coil spring interposed between the outer cover 123.
[0003]
When attaching the holder 113 to the adapter 102, the instrument main body 127 is set, and the holder main body 127 is held between the ceiling 100 and the holder 113 by pushing the holder 113 up to the adapter 102 and turning it. A male connector 126 of a cord 128 connected to a lighting circuit (not shown) of the instrument main body 127 is connected to the connector 112. Reference numeral 133 denotes a cushioning material such as urethane for increasing the adhesion to the ceiling 100.
[0004]
A second conventional example is shown in FIG. That is, in the locking structure for mounting the lamp base 140 to the socket base 141, the locking base 142 is provided with a locking claw 142, and an L-shaped locking groove 143 is formed in the socket base 141, as indicated by an arrow. The locking claw 142 is inserted into the locking groove 143 and rotated to be locked.
[0005]
[Problems to be solved by the invention]
In both the first conventional example and the second conventional example, as shown in FIG. 19, the locking claws 114 and 142 are guided in the vertical direction of the locking grooves 111 and 143, and the groove 146 is guided in the horizontal direction. And a groove 147 that presses and holds the locking claw 114 and the like by the pressure of the spring.
[0006]
However, in such a locking structure, the locking claw 114 or the like is pushed into the groove 145 such as the locking groove 111 to the full, and then the groove 146 is rotated to pass while maintaining the pushing amount. Therefore, it is necessary to guide to the groove 147.
For this reason, it is necessary to continuously apply a large force during the operation of mounting the luminaire. To attach the luminaire as shown in FIG. 16, the fixture is heavy, a stepladder for mounting on the ceiling 100, or the like. Since the work was done at a high altitude, the scaffolding was unstable and it was difficult to install.
[0007]
Further, even if the operation is interrupted during the mounting operation, if the locking claw 114 or the like is in the groove 146, the movement in the vertical direction is restricted at least, so that the illusion that the engagement has been completed is given. There is a risk of it happening. If held in such a halfway state, if an external force in the direction toward the groove 145 is applied during use, the engagement may be disengaged and the parts may fall, leading to an accident.
[0008]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a component locking structure that is easy to operate and does not allow temporary engagement between components.
[0009]
[Means for Solving the Problems]
The part locking structure according to claim 1 includes a first part having a first cylindrical part, a first part having a first engagement protrusion on an outer periphery of the first cylindrical part, and the first cylindrical part. The first engaging projection is retained and locked by rotating by fitting and rotating the first cylindrical portion and the second cylindrical portion having a second cylindrical portion having an inner diameter larger than the outer diameter. A second component having a second engagement protrusion on the inner periphery, and a spring that biases the first engagement protrusion and the second engagement protrusion in a locking direction;
The first engagement protrusion has a substantially triangular portion having a guide slope as an inclined surface, and the second engagement protrusion is continuous with a substantially triangular portion having a guide slope that slides on the guide slope as a slope. And a substantially V-shaped groove part into which the substantially triangular part of the first engaging protrusion can be fitted,
When the first cylindrical portion and the second cylindrical portion are relatively rotated, the guide slope of the first engagement protrusion and the second engagement against the spring force of the spring. The first engaging protrusion is fitted into the groove portion of the second engaging protrusion by sliding with the guide slope of the protrusion .
[0010]
According to the component locking structure of claim 1, the first engagement protrusion and the second engagement protrusion are spring-loaded by fitting and rotating the first cylindrical portion and the second cylindrical portion. It slides on the guide slope against the force, gets over it and locks. In this case, the guide slope is locked at the position where the sliding is finished, and the mounting of the first part and the second part is completed. Therefore, even if you release your hand, the first part and the second part will come off immediately, and there will be no temporary hooking, resulting in incomplete fitting. There is no danger of equipment falling. Further, as the first engagement protrusion and the second engagement protrusion relatively move along the guide slope, a load due to the spring force is gradually applied, so that the second part can be easily put into the first part. .
[0011]
According to a second aspect of the present invention, there is provided the component locking structure according to the first aspect, wherein the first engagement protrusion and the second engagement protrusion each have a pair, and the pair of second engagement protrusions have a rotation angle. The pair of first engaging projections are separated by 180 degrees, and the rotation angle is slightly smaller than 180 degrees .
According to the component locking structure of the second aspect, in addition to the effect of the first aspect, the position of the second engagement protrusion relative to the first engagement protrusion is relatively slightly shifted, for example, the first engagement. By opening the mating protrusion with a slight shift from the rotation angle of 180 degrees and opening the second engagement protrusion at the rotation angle of 180 degrees, by any chance, Even if temporary engagement occurs at the top of the guide slope in the engagement, the position of the top of the guide slope in the engagement of the other first engagement protrusion and the second engagement protrusion is misaligned, and the disengagement direction Since the spring pressure is applied, incomplete mounting is less likely to occur.
[0012]
According to a third aspect of the present invention, there is provided the component locking structure according to the first or second aspect, wherein the first engagement protrusion and the second engagement protrusion are in the locked state. It has a plane part which mutually contacts in the axial direction of two cylindrical parts.
According to the component locking structure of the third aspect, in addition to the effect of the first or second aspect, after the first component and the second component are mounted, they can be engaged with each other only by the plane portion. As a result, there is no risk of damaging the top of the relatively weak guide slope, and since it is an engagement between flat surfaces facing in the axial direction, the stability is good, and the first part and the second part do not tilt and look good. In addition, even when the parts are formed of resin, the force per unit area can be reduced, so that they are not easily damaged and are not easily deformed by the creep phenomenon.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
A first embodiment of the present invention will be described with reference to FIGS. That is, the component locking structure applied to this lighting fixture includes an adapter 1 as a first component and a holder 2 as a second component.
The adapter 1 has a first cylindrical portion 6, and has a first engagement protrusion 7 on the outer periphery of the first cylindrical portion 6. In the embodiment, the first cylindrical portion 6 includes a hook sealing portion 4a having a hook claw 5 hooked on a hook ceiling body 4 provided on the ceiling 3 or the like at the upper end, and a first cylindrical portion 6 depending from the hook sealing portion 4a. Constitutes a load feeding unit. The first cylindrical portion 6 is a cylindrical metal receiving portion of an incandescent lamp socket, and a center contact piece 14 and a side contact piece 15 are disposed on the female screw portion 6a as shown in FIG. Together with the first engaging projection 7 forms a triangular portion 7 'at the top to form a guide slope 7a on one side, in the axial direction protrudes from the guide slope 7a to form a vertical planar portion 7b Yes. Further, as shown in FIG. 4 , the pair of hook claws 5 are attached by attachment screws 51, and the inner end portions thereof are caulked and connected to the center contact piece 14 and the side contact piece 15. Reference numeral 9 denotes a lock release button for projecting and retracting the lock claw 10, and when the lock release button 9 is pushed to retract the lock claw 10, the hook claw 5 is hooked on the hook sealing body 4 and the lock release button 9 is released to release the spring. Thus, the locking claw 10 is protruded and locked in a recess (not shown) of the hooking sealing body 4 to restrict the rotation of the hooking sealing body 4, thereby preventing the adapter 1 from being inadvertently detached. 11 is a collar flange temporary holding, it can be caught temporary holding claws 13 of the flange 12 as shown in FIG. Reference numeral 1 a denotes a hook ceiling alignment mark for facilitating the hook claw 5 to be hooked on the hook ceiling body 4, and 16 is a lamp mounted on the first cylindrical portion 6.
[0014]
The holder 2 has a second cylindrical portion 17 having an inner diameter larger than the outer diameter of the first cylindrical portion 6. By rotating the first cylindrical portion 6 and the second cylindrical portion 17 together, the holder 2 rotates. The first engagement protrusion 7 has a second engagement protrusion 8 on the inner periphery that is retained and locked. In addition, a spring 20 that biases the first engaging protrusion 7 and the second engaging protrusion 8 in a locking direction is provided, and the first cylindrical portion 6 and the second cylindrical portion 17 are relatively moved. A guide slope 8a is formed on the second engagement protrusion 8 so as to slide and contact the guide slope 7a of the first engagement protrusion 7 against the spring force of the spring 20 when rotating. However, only one of the guide slopes 7a and 8a may be provided. The second engaging protrusion 8 has a flat surface portion 8b that is in axial contact with the flat surface portion 7b of the first cylindrical portion 7 in the locked state.
[0015]
The holder 2 of the embodiment has a cylindrical shape that is extrapolated to the adapter 1, and has an outer cylinder 18 that is connected to the second cylindrical part 17 as an inner cylinder. A moving member 19 for supporting the instrument main body that is movable in the axial direction is provided between the tube 18 and the spring 20 urges the moving member 19 toward the hooking sealing body 4. More specifically, the second cylindrical portion 17 is higher by the dimension e than the moving member 19 in a state where the second cylindrical portion 17 does not push up the instrument by the moving member 19. Further, the second cylindrical portion 17 and the outer cylinder 18 are integrally formed by a connecting portion 21 on the side away from the hooking sealing body 4, and an isolated elongated hole 21 a is formed in the connecting portion 21. The outer cylinder 18 is lower than the second cylindrical portion 17 by a dimension f as shown in FIG. The second cylindrical portion 17 is provided with a locking groove (not shown) for slidably locking the moving member 19 on the outer peripheral surface, and is engaged with the first engaging protrusion 7 of the adapter 2 on the inner peripheral surface. A second engaging projection 8 is provided. The second engaging protrusion 8 has a substantially V-shaped groove portion that can be engaged with the substantially triangular portion 7 ′ of the protrusion of the first engaging protrusion 7, and forms one side of the substantially triangular portion 7 ′. A guide slope 8a for guiding the guide slope 7a is formed on the outside of the groove portion. For this reason, a substantially triangular portion 8 'is formed at the edge of the groove portion. Therefore, as shown in FIG. 2, the first engaging protrusion 7 slides on the guide inclined surface 8a as the moving member 19 is rotated in a state where the guide inclined surface 7a of the first engaging protrusion 7 is in contact with the guide inclined surface 8a. As shown in FIG. 1, the holder 2 is engaged with the substantially V-shaped groove portion of the second engaging protrusion 8 when the guide slope 8 a is reached. It moves so that it can come off. Further, in the locked state of the first engaging protrusion 7 and the second engaging protrusion 8, the flat portions 7b and 8b are locked, and the substantially triangular portion of the first engaging protrusion 7 and the second engaging portion 7 are locked. It is slightly separated from the groove portion of the engaging protrusion 8.
[0016]
Further, a groove 35 for introducing the first engaging protrusion 7 into the second cylindrical portion 7 while guiding the first engaging projection 7 is formed over the entire axial length of the inner peripheral surface of the second cylindrical portion 17. The entrance is particularly wide to improve the guide property, and the number of the grooves 35 is four, so that more than two of the first engaging protrusions 7 are formed. When the holder 2 is attached to the adapter 1, the rotation direction for locking the first engagement protrusion 7 and the second engagement protrusion 8 is the rotation when the adapter 1 is attached to the hooking sealing body 4. Since the direction is adjusted, the adapter 1 is not loosened when the holder 2 is attached.
[0017]
The moving member 19 is configured to be fitted between the second cylindrical portion 17 and the outer cylinder 18 so as to be movable only in the axial direction. Is provided on the outer peripheral side of the upper end of the figure, and is slidably contacted with the outer peripheral surface of the second cylindrical portion 17 and is also used as a spring receiver and the locking of the second cylindrical portion 17 to the retaining portion 30. An elastic body (not shown) that projects the plurality of protrusions 19a to the inner peripheral surface, and further slidably engages with the engagement groove by extrapolating the moving member 19 from the end of the second cylindrical portion 17 is provided. Provided on the peripheral surface, the protrusion 19a can be locked to the retaining portion 30 in this state. Further, the lamp heat can rise between the second cylindrical portion 17 and the moving member 19 through the gap between the projections 19a and the long hole 21a, and the temperature rise of the holder 2 is suppressed.
[0018]
The instrument support portion 24 of the moving member 19 is divided into a plurality, that is, at least three, at substantially equal intervals in the circumferential direction of the moving member 19, and protrudes so as to be substantially the same as the outer diameter of the outer cylinder 18. Further, the height of the moving member 19 below the instrument support portion 24 is set lower than the height of the outer cylinder 18. That is, as shown in FIG. 8, when the height c of the outer cylinder 18 is set to a height d below the instrument support portion 24 of the moving member 19, c> d.
[0019]
The moving member 19 is a molded product made of a thermoplastic resin and is manufactured by injection molding, and a gate is provided on the end surface of the moving member 19 corresponding to the substantially central portion of each of the instrument support portions 24. 31 is a gate position on the molded product.
The spring 20 is disposed between the second cylindrical portion 17 and the outer cylinder 18, and biases the moving member 19 by being compressed between the connecting portion 21 and the moving member 19. In the embodiment, a coil spring is used.
[0020]
Further, after temporarily holding the flange 12 on the adapter 1, the holder 41 is held by holding the globe 41 and the holder 2 in both hands. When the holder 2 is attached, the flange 12 is pressed against the ceiling 3 by the instrument support 24 of the moving member 19 urged by the spring 20, whereby the flange 12 and the globe 41 are fixed.
In this way, an instrument for a single incandescent lamp that supports the flange 12 and the globe 41 is configured by the instrument support constituted by the adapter 1 and the holder 2.
[0021]
Since the inner diameter of the globe 41 is close to the outer diameter of the second cylindrical portion 17, the play amount is restricted. Further, since the position of the flange 12 is regulated by the globe 41, the position of the flange 12 is regulated when the location of the globe 41 is regulated. Furthermore, since the instrument support 24 is projected to the outer diameter of the outer cylinder 18 and the position is restricted, the edge of the globe 41 and the flange 12 can be placed on the instrument support 24 and the instrument can be held securely. Can do.
[0022]
According to this embodiment, the first engagement protrusion 7 and the second engagement protrusion 8 are brought into spring force by fitting and rotating the first cylindrical portion 6 and the second cylindrical portion 17. The guide slopes 7a and 8a are slid against this and get over and locked. In this case, the guide slopes 7a and 8a are locked at the positions where the sliding is finished, and the mounting of the adapter 1 of the first part and the holder 2 of the second part is completed. Until then, the guide slopes 7a and 8a are completed. Since the spring pressure is applied in the direction in which they come into contact with each other and come off from each other, the first part and the second part may come off immediately even if the hands are released in an incompletely mounted state, resulting in temporary hooking. No incomplete fitting occurs, and there is no risk of equipment falling.
[0023]
Further, as the first engagement protrusion 7 and the second engagement protrusion 8 move relatively along the guide inclined surfaces 7a and 8a, a load due to the spring force is gradually applied. Easy to put in parts. That is, as shown in FIG. 13A, in the conventional example, it is necessary to rotate the holder 2 while maintaining the maximum load from the start of mounting to the completion of mounting. As shown in b), after applying the load up to the place where the guide slopes 7a and 8a come into contact, the push-up force increases as the holder 2 is rotated. Only the portion indicated by the one-dot chain line in the figure requires less energy for the mounting operation. For this reason, it is easy to lock the holder 2 to the adapter 1.
[0024]
In addition, since the first engagement protrusion 7 and the second engagement protrusion 8 have flat portions 7b and 8b that are in phase contact with each other in the axial direction of the first cylindrical portion 6 and the second cylindrical portion 17 in the locked state, After mounting the first part and the second part, the flat parts 7b and 8b can be engaged with each other only, so that the tops of the triangular parts 7 'and 8' of the guide slope 7b having relatively weak strength are damaged. There is no fear, and since it is the engagement between the planes facing in the axial direction, the stability is good, the first part and the second part do not tilt, it looks good, and even if the part is made of resin, the unit area Since the hitting force can be reduced, it is difficult to break, and deformation due to the creep phenomenon is less likely to occur.
[0025]
A second embodiment of the present invention is shown in FIG. That is, in the first embodiment, the locking structure for this component has a pair of the first engaging protrusion 7 and the second engaging protrusion 8, respectively. The positional relationship of the engagement protrusion 8 is slightly shifted in the circumferential direction.
In FIG. 14, the pair of first engaging protrusions 7 are separated from the rotation angle 180 degrees by a small angle α, and the pair of second engagement protrusions 8 are separated by a rotation angle 180 degrees.
[0026]
According to this embodiment, in the unlikely event that the first engaging protrusion 7 and the second engaging protrusion 8 are engaged, the guide slopes 7a and 8a are temporarily formed at the tops of the triangular portions 7 'and 8'. Even if the hook is generated, the positions of the tops of the guide inclined surfaces 7a and 8a in the engagement of the other first engaging protrusion 7 and the second engaging protrusion 8 are shifted, and the spring pressure in the disengagement direction. Since it is applied, incomplete mounting is less likely to occur.
[0027]
A third embodiment of the present invention is shown in FIG. In other words, this component locking structure is such that the first engagement protrusion 7 and the second engagement protrusion 8 are each one in the first embodiment.
In this embodiment, although the balance of engagement between the second cylindrical portion 17 and the first cylindrical portion 6 is poor and the holder 2 is tilted, two or more top portions of the guide slopes 7a and 8a are assumed simultaneously. There is no hanging, and since the balance in the temporary hanging state cannot be obtained, the temporary hanging is less likely to occur as compared with the first embodiment.
[0028]
【The invention's effect】
According to the component locking structure of claim 1, the first engagement protrusion and the second engagement protrusion are spring-loaded by fitting and rotating the first cylindrical portion and the second cylindrical portion. It slides on the guide slope against the force, gets over it and locks. In this case, the guide slope is locked at the position where the sliding is finished, and the mounting of the first part and the second part is completed. Therefore, even if you release your hand, the first part and the second part will come off immediately, and there will be no temporary hooking, resulting in incomplete fitting. There is no danger of equipment falling. Further, as the first engagement protrusion and the second engagement protrusion relatively move along the guide slope, a load due to the spring force is gradually applied, so that the second part can be easily put into the first part. .
[0029]
According to the component locking structure of the second aspect, in addition to the effect of the first aspect, the position of the second engagement protrusion relative to the first engagement protrusion is relatively slightly shifted, for example, the first engagement. By opening the mating protrusion with a slight shift from the rotation angle of 180 degrees and opening the second engagement protrusion at the rotation angle of 180 degrees, by any chance, Even if temporary engagement occurs at the top of the guide slope in the engagement, the position of the top of the guide slope in the engagement of the other first engagement protrusion and the second engagement protrusion is misaligned, and the disengagement direction Since the spring pressure is applied, incomplete mounting is less likely to occur.
[0030]
According to the component locking structure of the third aspect, in addition to the effect of the first or second aspect, after the first component and the second component are mounted, they can be engaged with each other only by the plane portion. As a result, there is no risk of damaging the top of the relatively weak guide slope, and since it is an engagement between flat surfaces facing in the axial direction, the stability is good, and the first part and the second part do not tilt and look good. In addition, even when the parts are formed of resin, the force per unit area can be reduced, so that they are not easily damaged and are not easily deformed by the creep phenomenon.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing engagement of a first embodiment of the present invention.
FIG. 2 is an explanatory diagram of a state before the engagement.
FIG. 3 is a front view of a lighting fixture.
FIG. 4 is a half sectional side view of the adapter.
FIG. 5 is a partial cross-sectional view of the first cylindrical portion.
FIG. 6 is a bottom view of the adapter.
FIG. 7 is a plan view of the holder.
FIG. 8 is a half sectional front view thereof.
FIG. 9 is an explanatory view showing irregularities on the outer peripheral surface of the outer cylinder.
FIG. 10 is a perspective view before the holder is connected to the adapter.
FIG. 11 is a perspective view seen from the lower end side of the holder.
FIG. 12 is a perspective view of a first engagement protrusion.
FIG. 13 is a graph of a conventional example and an embodiment of a force for pushing up a holder with respect to a rotation amount.
FIG. 14 is a bottom view of the adapter according to the second embodiment.
FIG. 15 is a bottom view of the adapter according to the third embodiment;
FIG. 16 is a partial cross-sectional view of a first conventional example.
FIG. 17 is a perspective view before a holder is connected to the adapter.
FIG. 18 is a partial perspective view showing a lamp base and a socket base of a second conventional example.
FIG. 19 is an explanatory diagram of a conventional locking groove.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Adapter 1 which is 1st part Holder 6 which is 2nd part 1st cylindrical part 7 1st engaging part 7a Guide slope 7b Plane part 8 2nd engagement part 8a Guide slope 8b Plane part 17 1st 2 cylindrical portion 18 outer cylinder 19 moving member 20 spring

Claims

A first part having a first cylindrical part and having a first engagement protrusion on an outer periphery of the first cylindrical part; and a second cylindrical part having an inner diameter larger than the outer diameter of the first cylindrical part A second engaging projection on the inner periphery of which the first engaging projection is retained and locked by rotating by fitting and rotating the first cylindrical portion and the second cylindrical portion. 2 parts, and a spring that urges the first engagement protrusion and the second engagement protrusion in a direction of locking,
The first engaging protrusion has a substantially triangular portion having a guide slope as an inclined surface, and the second engaging protrusion is continuous with a substantially triangular portion having a guide inclined surface that is in sliding contact with the guide inclined surface as a slope. And a substantially V-shaped groove part into which the substantially triangular part of the first engaging protrusion can be fitted,
When the first cylindrical portion and the second cylindrical portion are relatively rotated, the guide inclined surface of the first engagement protrusion and the second engagement against the spring force of the spring. A component locking structure in which the guide engaging slope of the protrusion slides so that the first engaging protrusion fits into the groove of the second engaging protrusion .

Each of the first engagement protrusion and the second engagement protrusion has a pair, the pair of second engagement protrusions are separated by a rotation angle of 180 degrees, and the pair of first engagement protrusions are rotated by a rotation angle of 180 degrees. The part locking structure according to claim 1, wherein the structure is separated by an angle slightly smaller than the angle .

The said 1st engaging protrusion and the said 2nd engaging protrusion have a plane part which mutually contacts in the axial direction of a said 1st cylindrical part and a said 2nd cylindrical part in the latching state. 2. A locking structure for parts according to item 2.