JP3946631B2

JP3946631B2 - Terminal block

Info

Publication number: JP3946631B2
Application number: JP2002369296A
Authority: JP
Inventors: 孝花岡
Original assignee: 東洋技研株式会社
Priority date: 2002-12-20
Filing date: 2002-12-20
Publication date: 2007-07-18
Anticipated expiration: 2022-12-20
Also published as: JP2004200091A

Description

【０００１】
【発明の属する技術分野】
本発明は、複数のリード線を導通片を介して電気的に接続するための端子台に関するものである。
【０００２】
【従来の技術】
杆状導通片を絶縁性基板に横断状に装着し、リード線が杆状導通片に電気的に接続される複数の接続部を、杆状導通片に沿って具備する端子台は種々提案されている。これらの端子台は、前後に重ね合わせられて、据付レール上に保持される（例えば、特許文献１参照。）。
【０００３】
また、上述の端子台にあって、各接続部は、杆状導通片に一体的に形成されて刃先を導通片の長手方向に沿って突出するＶ形破断刃と、ほぼ上下方向のリード線挿入孔と梃子棒貫通孔とが形成され、杆状導通片に沿って移動して、リード線挿入孔がＶ形破断刃から退避する開放位置とＶ形破断刃と上下で重なる接続位置とに位置決めされる可動押圧片と、杆状導通片の底面に形成された、開放位置から接続位置に至るリード線挿入孔の作動領域に対向する梃子棒作動口と、絶縁性基板に形成された、梃子棒貫通孔及び梃子棒作動口とから挿入された梃子棒を内部で傾動可能に支持する操作溝とを備えた構成が、本発明者により提案され、既に特許出願している（特願２００２−０９０６６２）。
【０００４】
かかる構成にあっては、操作溝内での梃子棒の傾動作用により梃子棒貫通孔の従動に伴って可動押圧片を移動して、接続位置でリード線挿入孔に挿入されたリード線をＶ形破断刃にくい込ませて、その導線とＶ形破断刃とを電気的に接続するようになっている。
【０００５】
【特許文献１】
特開平１０−２２４４５９号公報
【発明が解決しようとする課題】
上述した端子台にあっては、リード線をＶ形破断刃で強固に保持するために、リード線の挿入端を、リード線挿入孔の奥部の座定位置まで挿入した状態で、リード線をＶ形破断刃に食い込ませるようにしているが、端子台が前後に結合した状態にあっては、リード線が、挿入孔のどの位置まで挿入されたかは視認困難であり、通常の結線作業では、リード線を座定位置まで挿入した事を、挿入時の手応えにより判断している。しかし、リード線の挿入時には、挿入端が、リード線挿入孔の途中で引っ掛かることがあり、かかる判断方法では挿入端が、座定位置へ挿入されたことを判別し難く、接続不良や、結線作業の煩雑化の原因となっている。
【０００６】
本発明は、かかる問題の解決を試みたものであって、リード線の挿入端を、リード線挿入孔の座定位置まで挿入したことを、外方から視認可能な端子台の提供を目的とする。
【０００７】
【課題を解決するための手段】
本発明は、杆状導通片を絶縁性基板に横断状に装着し、リード線挿入孔から挿入されたリード線が杆状導通片に電気的に接続される複数の接続部を、杆状導通片に沿って具備する端子台において、リード線挿入孔へ挿入されたリード線の挿入端が座定位置となると、該挿入端による押圧作用により、リード線挿入確認片の上端を、外方から視認可能な確認位置に変位させるようにした確認片変位手段を備えたことを特徴とする端子台である。
ここで、各接続部は、杆状導通片に一体的に形成されて刃先を導通片の長手方向に沿って突出するＶ形破断刃と、ほぼ上下方向のリード線挿入孔と梃子棒貫通孔とが形成され、杆状導通片に沿って移動して、リード線挿入孔がＶ形破断刃から退避する開放位置とＶ形破断刃と上下で重なる接続位置とに位置決めされる可動押圧片と、杆状導通片に形成された、開放位置から接続位置に至るリード線挿入孔の作動領域に対向する梃子棒作動口と、絶縁性基板に形成された、梃子棒貫通孔及び梃子棒作動口とから挿入された梃子棒を内部で傾動可能に支持する操作溝とを備え、操作溝内での梃子棒の傾動作用により梃子棒貫通孔の従動に伴って可動押圧片を移動して、接続位置でリード線挿入孔に挿入されたリード線をＶ形破断刃にくい込ませて、その導線とＶ形破断刃とを電気的に接続するようにしたものにあって、可動押圧片に、リード線挿入確認片を移動可能に保持するとともに、リード線挿入孔へ挿入されたリード線の挿入端が座定位置となると、該挿入端による押圧作用により、リード線挿入確認片の上端を、外方から視認可能な確認位置に変位させるようにした確認片変位手段を備えたことを特徴とする端子台が提案される。すなわち、可動押圧片にリード線挿入孔を形成した構成に係るものである。
【０００８】
かかる構成にあっては、リード線を、座定位置まで挿入すると、リード線挿入確認片の上端が外方から視認可能となり、作業者に、リード線が適切に挿入されたことを報知することとなる。このため、リード線の接続不良を防止できると共に、迅速な結線作業が可能となる。ここで、リード線挿入確認片は、視認され易いように、少なくとも、その上端を可動押圧片と別の色や、別の模様で構成することができる。
【０００９】
ここで、確認片変位手段が、リード線挿入孔の側傍に上下方向の作動孔を形成して、リード線挿入確認片を該作動孔内に昇降可能に保持すると共に、リード線挿入孔に、傾動可能に保持され、その保持部から突出した一端を前記リード線挿入確認片の下部に連係し、保持部から他方へ突出した他端をリード線挿入孔のリード線挿入端の座定領域内に突出するように配置されて、リード線挿入孔へ挿入されたリード線の挿入端が座定位置となると、該挿入端により、他端が下方へ押圧されて、保持部を中心に傾動し、一端の上方移動によりリード線挿入確認片を上昇移動させて、その上端を確認位置に変位させる傾動変換片を備えてなるものである構成が提案される。ここで、座定領域とは、リード線の挿入端であるリード線挿入端の座定位置、及びその周辺領域を指す。かかる構成にあっては、傾動変換片の傾動作用により、リード線挿入端の座定位置への挿入に伴って、リード線挿入確認片の上端が、上方の確認位置へ変位することとなる。
【００１０】
そして、傾動変換片を、薄肉保持部を介して可動押圧片に一体的に形成し、リード線の挿入端により傾動変換片が押圧されると、前記薄肉保持部が弾性変形し、傾動変換片を傾動させ、リード線挿入確認片の上端を確認位置に変位させるようにした構成が提案される。かかる構成にあっては、リード線挿入端を、座定位置まで挿入すると、薄肉保持部が弾性変形し、傾動変換片を傾動させ、該傾動変換片が、リード線挿入確認片の上端を確認位置へと押し上げる。一方、リード線挿入端が、座定位置から退避すると、薄肉保持部が、定常位置に復帰するため、傾動変換片が、リード線挿入確認片を押し下げ、該リード線挿入確認片は、その上端を確認位置から退避することとなる。このように傾動変換片を可動押圧片と一体的に形成することにより、部品点数を削減できる。すなわち、実施例でも示すように、傾動変換片は、その設計例として、長さが６ｍｍ以下で、幅３ｍｍ程度の微細な形状が求められるが、上述したように、これを可動押圧片と一体形成し、かつ薄肉保持部を介して連成することにより、該薄肉保持部の可撓性による復元弾力を介して、傾動可能とすることができ、支軸等を要することなく作製可能とすることができる。また、その傾動変換片を、可動押圧片に取り付ける作業が不要となる。
【００１１】
確認片変位手段が、リード線挿入孔にリード線挿入確認片を傾動可能に保持すると共に、該リード線挿入確認片の下端をリード線挿入孔のリード線挿入端の座定領域内に突出するように配置して、リード線挿入孔へ挿入されたリード線の挿入端が座定位置となると、該挿入端に、リード線挿入確認片の下端が押圧されることにより、リード線挿入確認片が傾動し、その上端を確認位置に変位させるものである構成も提案される。かかる構成にあっては、座定位置へ挿入するリード線挿入端が、リード線挿入確認片の下端部を直接押圧し、該リード線挿入確認片を傾動させて、該リード線挿入確認片の上端を確認位置へ変位させることとなる。
【００１２】
リード線挿入確認片を、薄肉保持部を介して可動押圧片に一体的に形成し、リード線の挿入端によりリード線挿入確認片の下端が押圧されると、前記薄肉保持部が弾性変形し、リード線挿入確認片の上端を傾動させ、確認位置に変位させるようにした構成も提案される。かかる構成にあっては、リード線挿入確認片を、薄肉保持部を介して、可動押圧片と一体的に形成したため、部品点数を減らすことが可能となる。
【００１３】
【発明の実施の形態】
本発明の一実施例を添付図面に従って説明する。
図１は、本発明の一実施例に係る端子台１を示し、ポリカーボネイト等絶縁性樹脂材料によって板状に形成された左右対称の絶縁性基板２（図２参照）を主体部とし、杆状導通片２０が絶縁性基板２に横断状に装着される。また、端子台１の両側には杆状導通片２０にリード線８０を接続するための接続部３，３が配設される。
【００１４】
この絶縁性基板２は、図２に示すように、背板１０から所定肉厚で画成壁４が突出することにより、座定溝面５，５などを一面側で開放状に形成してなる。すなわち、絶縁性基板２の上面は肉厚頂部７から両側へ、等角度で傾斜したへ字状をなし、その傾斜辺の内側を、画成壁４により傾斜辺に沿ってほぼ矩形状に区画された座定溝面５，５とし、さらに座定溝面５，５上を上方へ開放する結線口６，６としている。また前記座定溝面５，５の底部には、梃子棒８２（図１７，１８参照）の先端部を支持側縁９で傾動可能に支持する上方へ拡開する操作溝８が、画成壁４により区画形成されている。
【００１５】
また、絶縁性基板２の周囲に形成された画成壁４の前面の適宜位置に連結孔５５を形成し、さらに背板１０の、該連結孔５５と対向する位置に、該連結突起（図示せず）を形成して、相互に嵌入することにより、端子台１相互は重ね合わせ状に連結される。また最端部の端子台１の画成壁４に端子台１とほぼ同一外形の端板５７が被着される（図３，４参照）。
【００１６】
このようにして端子台１は、図１，３，４で示すように、上述した据付レール７０の連係突部７１，７１に連結片１５，１５を係合して、据付レール７０上に多数重ね合わせ状に連結される。さらに、この端子台列を据付レール７０上で固定するために、該据付レール７０に固定金具７６，７６が螺子７７により固定される。
【００１７】
また、導通片２０は、図１に示すように、座定溝面５，５に差し渡して装着され、絶縁性基板２の背板１０に対して、へ字状に屈曲した杆状をなす。この杆状導通片２０の、各座定溝面５，５に装着される各辺部は接続部３，３の主部を構成するものであり、この杆状導通片２０についてさらに詳細に説明する。
【００１８】
杆状導通片２０は、図５〜８で示すように、各座定溝面５，５に装着される各辺部にあって、底面部２１ａと、該底面部２１ａの両側から起立する側面部２１ｂ，２１ｂとからなる断面コ字状をなす。また、その図３中の両側では、側面部２１ｂ，２１ｂから舌片部２１ｃ，２１ｃが湾曲状に延出して、その端縁を接触状に対向させており、舌片部２１ｃ，２１ｃの内側端縁に、刃先を杆状導通片２０の長手方向に沿って突出するＶ形破断刃２２を削成している。
さらに、底面部２１ａには、操作溝８の開口に臨む部位を切欠して、梃子棒作動口２３，２３を形成している。
【００１９】
次に、図１に示すように、接続部３，３にあって、杆状導通片２０の側面部２１ｂ，２１ｂ間には、可動押圧片３０が該杆状導通片２０に沿って、左右方向に移動可能に装着される。この可動押圧片３０は、絶縁性合成樹脂を成型してなり、図９，１０に示すように、図９，１０中の右側（以下、右側）にリード線挿入孔３１が、図９，１０中の左側（以下、左側）に梃子棒貫通孔３２が上下方向へ夫々形成される。また、リード線挿入孔３１と、梃子棒貫通孔３２との間には、作動孔４４が上下方向に形成されており、その内部には、本発明にかかる、リード線挿入確認片４０が昇降可能に保持される。
【００２０】
さらに図９〜１５に従って、詳しく述べると、可動押圧片３０は、前後に肉厚な、正面視逆Ｌ字状の基部３３と、該基部３３の右側下部に位置し、杆状導通片の側面部２１ｂ，２１ｂ間に嵌入し、後述する接続位置IIで舌片部２１ｃ，２１ｃ内に嵌合する、前後に肉薄なＵ形の押圧部３４とを備える。
【００２１】
前記基部３３の左側部には、前記梃子棒貫通孔３２が、杆状導通片２０の長尺方向と直交するように、上下方向に貫通状に形成される。この梃子棒貫通孔３２は挿入される梃子棒８２の軸杆に対して大きな遊びの無い孔形状となっており、梃子棒貫通孔３２を通して、梃子棒８２を梃子棒作動口２３に挿入して傾動することにより、該梃子棒８２が梃子棒貫通孔３２内側面を押圧して、可動押圧片３０を、絶縁性基板２の内方の開放位置Ｉと、外方の接続位置IIとに位置変換するようになっている（図１７，１８参照）。
【００２２】
また、可動押圧片３０の右側部に形成される前記リード線挿入孔３１は、基部３３右側を上下に貫通する貫通部３１ａと、該貫通部３１ａの下端と連通し、押圧部３４内で前後方向に開放する開放部３１ｂとからなり、該開放部３１ｂの下部をリード線挿入端８１の座定位置Ｘとしている。
【００２３】
また、開放部３１ｂの右内側面には、舌片状のリード線保持片４６が、左下方に突設される。かかるリード線保持片４６は、リード線８０の挿入時に、リード線挿入端８１により押圧され、先端部を右下方へ弾性変形する。そして、その弾性反発力により、該リード線挿入端８１を、開放部３１ｂの左側面に押し付けて、リード線挿入端８１を座定位置Ｘに保持するようになっている（図１６参照）。
【００２４】
さらに、押圧部３４の上部には、リード線挿入孔３１の両側に位置させて、Ｖ形破断刃２２に嵌入する、薄板状の隙間板４５ａ，４５ｂが形成される。かかる隙間板４５ａ，４５ｂは、可動押圧片３０が、開放位置Ｉから接続位置IIに変位する際に、舌片部２１ｃ，２１ｃ間に進入して、リード線８０の被覆部が適切に切断されるように、Ｖ形破断刃２２の先端を押し広げる。
【００２５】
また、可動押圧片３０の左側には、防塵弁４３が一体的に形成される。かかる防塵弁４３は、基部３３の左側縁に突成される正面視Ｖ字形の屈曲防塵片４３ａと、該屈曲防塵片４３ａの屈曲部から、下方に突成される舌片状の可撓性防塵片４３ｂとからなる。前記屈曲防塵片４３ａは、左端部に形成される嵌合部６０を、絶縁性基板２の肉厚頂部７に形成される嵌合溝６１に嵌合する。そして、可動押圧片３０の開放位置Ｉでは、可動押圧片３０と肉厚頂部７との間で折畳まれ、可動押圧片３０の接続位置IIでは、横方向に伸長し、可動押圧片３０の接続位置IIへの変位後に生じる間隙を杆状導通片２０の上方で遮蔽しする。一方、可撓性防塵片４３ｂは、屈曲防塵片４３ａの伸縮に伴い傾動し、可動押圧片３０の開放位置Ｉで、操作溝８方向に突出し、梃子棒貫通孔３２より挿入された梃子棒８２を該操作溝８へ案内すると共に、可動押圧片３０の接続位置IIで、梃子棒貫通孔３２を下方で遮蔽し、該梃子棒貫通孔３２から塵埃が杆状導通片２０上に落下するのを防止する。
【００２６】
さらには、可動押圧片３０の上面には、突成部３８が上方へ形成される。かかる突成部３８の上端には、前後縁に指標凹部９０，９０が形成されており、該指標凹部９０を、絶縁性基板２の結線口６，６に形成された開放位置Ｉを示すマーク３９ａ，接続位置IIを示すマーク３９ｂに、突成部３８を一致させることにより、可動押圧片３０が、開放位置Ｉと接続位置IIへの位置決めを確実に行い得るようにしている。
【００２７】
また、押圧部３４の下部前後面には、突起３６，３６が形成されており、一方、杆状導通片２０の側面部２１ｂ，２１ｂには、内側に向けて突部２５が形成される（図５〜８）。そして、この突起３６，３６と突部２５とは、可動押圧片３０が、開放位置Ｉ、又は接続位置IIに位置する状態で、相互に当接して可動押圧片３０を係止保持するようになっている。
【００２８】
次に本発明の要部である、リード線挿入確認片４０、及び該リード線挿入確認片４０を変位させる確認片変位手段について、図９〜図１５に従って説明する。本実施例では、確認片変位手段は、リード線挿入確認片４０を昇降可能に保持する作動孔４４、及びリード線挿入端８１の押圧作用により、リード線挿入確認片４０を上昇させる傾動変換片４２により構成される。
【００２９】
リード線挿入確認片４０は、図９に示すように、下部に切欠部９１が形成された、上下に長い杆状をなし、図１０に示すように、可動押圧片３０の作動孔４４に嵌入し、昇降可能に保持される。また、作動孔４４は、可動押圧片３０の中央部に上下に形成されており、その断面は、嵌入するリード線挿入確認片に対して、遊びのない形状となっている。そして、この作動孔４４の上端は、突成部３８の上面に開口し、その上方をリード線挿入確認片４０上端の確認位置Ｙとする。一方、作動孔４４の下端は、リード線挿入孔３１の開放部３１ｂの左側面に開口し、保持したリード線挿入確認片４０の切欠部９１が、該開放部３１ｂに露出する。ここで、可動押圧片３０は赤色樹脂、リード線挿入確認片４０は白色樹脂により構成されており、可動押圧片３０との色の対比により、該リード線挿入確認片４０が上端を確認位置Ｙとした際に、視認容易となるようにしている。
【００３０】
一方、傾動変換片４２は、隙間板４５ｂの下方に垂下する薄肉保持部４７の下端から両側に突出する杆状をなし、該薄肉保持部４７を介して可動押圧片３０と一体的に形成される。そして、傾動変換片４２の両端のうち、開放部３１ｂに突出する受圧端４８は、リード線８０挿入時にリード線挿入端８１と当接するようにその先端を座定位置Ｘ上方に配置され、一方、作動孔４４の下部開口側へ突出する係合端５０は、その先端をリード線挿入確認片４０の切欠部９１に嵌入される。なお、本実施例の傾動変換辺は、長さ５ｍｍ・前後幅２ｍｍの微小な形状をなし、薄肉保持部４７を介して可動押圧片３０と一体成型することにより、傾動変換片４２の組み付け行程が不要となり、また支軸等の保持部品を別途設けることなく、傾動変換片４２を傾動させることが可能となっている。
【００３１】
次に、座定位置Ｘへのリード線８０の挿入に伴う傾動変換片４２の傾動態様について図１６を参照して説明する。
まず、リード線挿入孔３１にリード線８０が挿入されない状態にあっては、薄肉保持部４７は、下方に垂下した定常状態にあり、リード線挿入確認片４０は、傾動変換片４２の係合端５０により、作動孔４４の下方で係止され、その上端は、作動孔４４内に退避している（図１６イ）。そして、リード線挿入孔３１に、リード線８０を挿入して行くと、リード線挿入端８１が、傾動変換片４２の受圧端４８と当接し、該リード線挿入端８１による、受圧端４８への押圧作用により、薄肉保持部４７が下端を左方に弾性変形し、傾動変換片４２を左方向へ傾動させる。これに伴って、傾動変換片４２の係合端５０が、切欠部９１を押し上げて、リード線挿入確認片４０が上昇し始める（図１６ロ）。さらに、リード線挿入端８１を、座定位置Ｘまで挿入すると、薄肉保持部４７はさらに弾性変形し、リード線挿入確認片４０は、傾動変換片４２の係合端５０により、その上端を作動孔４４の上部開口から、確認位置Ｙへ突出させることとなる（図１６ハ）。
【００３２】
一方、これに対して、挿入端８１が、座定位置Ｘに位置する状態で（図１６ハ）、リード線８０を挿入孔３１から引抜いた場合には、挿入端８１の退避に伴い、薄肉保持部４７が定常位置へ復帰して、傾動変換片４２が右方へ傾動して、その係合端５０がリード線挿入確認片４０を押し下げ、リード線挿入確認片４０の上端は作動孔４４内に退避する（図１６イ，ロ）。すなわち、リード線挿入端８１を座定位置Ｘまで挿入すれば、リード線挿入確認片４０の上端が確認位置Ｙへ突出し、リード線挿入端８１を座定位置Ｘから退避させれば、リード線挿入確認片４０の上端は確認位置Ｙから下方に退避することとなる。このため、リード線挿入孔３１内のリード線挿入端８１が、座定位置Ｘまで挿入されたか否かを、前記確認位置Ｙのリード線挿入確認片４０の有無により、視覚的に判断可能となる。
【００３３】
この端子台１の、接続部３，３への結線手順を図１７，１８に従って説明する。
リード線８０の非接続時には、可動押圧片３０は、開放位置Ｉとなっている（図１７（イ）参照）。この状態で、結線口６，６からリード線８０を、リード線挿入孔３１に挿入し、リード線８０の挿入端８１が、座定位置Ｘまで達すると、上述したように、傾動変換片４２の傾動により、リード線挿入確認片４０の上端が、確認位置Ｙに突出し、外方から容易に視認可能となる（図１７（ロ）参照）。
【００３４】
そして、梃子棒貫通孔３２及び梃子棒作動口２３とから梃子棒８２を挿入し、その先端を操作溝８の底縁に当接する。次に、梃子棒８２を支持側縁９を支点として操作溝８内で傾動する（図１８（ハ）参照）と、梃子棒貫通孔３２は、梃子棒８２に対して遊びがほとんどないから、該梃子棒８２の傾動操作による回動モーメントの作用を受けて、可動押圧片３０は梃子棒貫通孔３２での梃子棒８２の幅変位に相当する分だけ杆状導通片２０に沿って移動して接続位置IIとなる（図１８（ニ）参照）。
【００３５】
この可動押圧片３０の接続位置IIへの変位により、可動押圧片３０は、押圧部３４が舌片部２１ｃ，２１ｃ内に嵌合し、かつリード線挿入孔３１がＶ形破断刃２２と上下で重なる。そして、図１９に示すように、リード線挿入孔３１に挿入されたリード線８０は、リード線挿入孔３１の内側面により、Ｖ形破断刃２２へ押し付けられ（図１９ロ）、舌片部２１ｃ，２１ｃの端縁部間に嵌入する（図１９ハ）。ここで、該Ｖ形破断刃２２の刃先は長手方向に沿って突出しているから、被覆８４に刃先が食い込んで、導線８３が切断されない程度に被覆８４が破断され、その導線８３はＶ形破断刃２２と電気的に接続する。また、リード線８０の挿入端８１は、Ｖ形破断刃２２間で挟持され、引き抜き不能に保持されることとなる。
【００３６】
このように、本実施例の端子台１にあっては、リード線挿入端８１が適切に座定位置Ｘに挿入されると、リード線挿入確認片４０の上端が、が確認位置Ｙに突出し、容易に視認可能となる。このため、結線作業において、作業者は、リード線８０が、リード線挿入孔３１に、適切に挿入されたことを、明快に確認することができ、結線作業を迅速かつ安定したものとできる。また、傾動変換片４２を可動押圧片３０と一体的に形成することにより、部品点数を削減できると共に、傾動変換片４２を、可動押圧片３０に取り付ける作業が不要となり、微細な傾動変換片４２を備える端子台１を効率的に作製可能となる。
【００３７】
次に、図２０に、本発明の他実施例に係る可動押圧片３０ａを示す。かかる実施例にあっては、リード線挿入確認片４０ａが、薄肉保持部４７ａを介して、可動押圧片３０ａと一体的に形成される。該リード線挿入確認片４０ａは、薄肉保持部４７ａから上下に突出する杆状をなし、下端を座定位置Ｘ’上方に突出し、上端を作動孔４４ａ内に突出させており、薄肉保持部４７ａの弾性変形により、傾動可能に保持される。ここで、リード線挿入確認片４０ａの上端には、塗料を塗付し、可動押圧片３０ａの他部分と異なる配色とすることにより、確認位置Ｙ’で、外方から視認容易としている。
【００３８】
そして、リード線８０の非挿入時にあっては（図２０（イ））、リード線挿入確認片４０の上端は、確認位置Ｙ’の左方に位置する。かかる位置にあっては、その上方が遮蔽されるため、外方から視認困難な状態にある。そして、リード線８０が、リード線挿入孔３１に挿入され、その挿入端８１が座定位置Ｘ’まで挿入されると、リード線挿入確認片４０ａの下端が、該挿入端８１により押圧され、薄肉保持部４７ａが側端を下方に弾性変形し、リード線挿入確認片４０ａの上端が右方に傾動し、確認位置Ｙ’とし、外方から視認容易な状態となる。なお、その他の構成は上述の実施例と同じであり、説明を省略する。このように、可動押圧片３０ａと、リード線挿入確認片４０ａを一体的に形成すれば、部品点数を削減でき、端子台の組立工程を簡素化することができる。
【００３９】
以上のように実施例を説明したが、本発明は、上記実施例の構成に限定したものではなく、本発明の趣旨の範囲内で適宜変更可能である。例えば、接続部３は、左右に一つずつである必要はなく、一側に複数の可動押圧片３０を配設して、接続部３を複数具備するようにしてもよい。また、リード線挿入確認片４０の上端は、確認位置Ｙで視認し易いものであればよく、可動押圧片３０、及びリード線挿入確認片４０を、本実施例の配色に限定するものではない。
【００４０】
【発明の効果】
本発明は、リード線挿入孔へ挿入されたリード線の挿入端が座定位置となると、該挿入端による押圧作用により、リード線挿入確認片の上端を、外方から視認可能な確認位置に変位させるようにした確認片変位手段を備えたから、リード線の挿入端が座定位置まで挿入されたことを、リード線挿入確認片により、視覚的に確認可能となるため、リード線の接続不良を防止できると共に、結線作業を迅速化できる。
【００４１】
ここで、確認片変位手段が、リード線挿入孔の側傍に上下方向の作動孔を形成して、リード線挿入確認片を該作動孔内に昇降可能に保持すると共に、リード線挿入孔に、傾動可能に保持され、その保持部から突出した一端を前記リード線挿入確認片の下部に連係し、保持部から他方へ突出した他端をリード線挿入孔のリード線挿入端の座定領域内に突出するように配置されて、リード線挿入孔へ挿入されたリード線の挿入端が座定位置となると、該挿入端により、他端が下方へ押圧されて、保持部を中心に傾動し、一端の上方移動によりリード線挿入確認片を上昇移動させて、その上端を確認位置に変位させる傾動変換片を備えてなるものである場合には、傾動変換片の傾動により、リード線の挿入端の押圧作用を、リード線挿入確認片に伝え、該リード線挿入確認片の上端を確認位置に変位させることができる。
【００４２】
そして、傾動変換片を、薄肉保持部を介して可動押圧片に一体的に形成し、リード線の挿入端により傾動変換片が押圧されると、前記薄肉保持部が弾性変形し、傾動変換片を傾動させ、リード線挿入確認片の上端を確認位置に変位させるようにすれば、傾動変換片の可動押圧片への組み付け作業が不要となり、部品点数を削減できると共に、リード線挿入端の押圧作用を、リード線挿入確認片に伝えるのに適する微小形状の傾動変換片を作製できる。
【００４３】
また、確認片変位手段が、リード線挿入孔にリード線挿入確認片を傾動可能に保持すると共に、該リード線挿入確認片の下端をリード線挿入孔のリード線挿入端の座定領域内に突出するように配置して、リード線挿入孔へ挿入されたリード線の挿入端が座定位置となると、該挿入端に、リード線挿入確認片の下端が押圧されることにより、リード線挿入確認片が傾動し、その上端を確認位置に変位させるものである場合には、リード線の挿入端で、リード線挿入確認片を直接変位させるため、確認片変位手段を、介在機構を要しない簡素なものとできる。
【００４４】
さらに、リード線挿入確認片を、薄肉保持部を介して可動押圧片に一体的に形成し、リード線の挿入端によりリード線挿入確認片の下端が押圧されると、前記薄肉保持部が弾性変形し、リード線挿入確認片の上端を傾動させ、確認位置に変位させるようにすれば、リード線挿入確認片を可動押圧片と一体化することにより、部品点数を削減できる。
【図面の簡単な説明】
【図１】本発明の端子台１を示す正面図である。尚、画成壁４は断面を付して示す。
【図２】絶縁性基板２の正面図である。
【図３】集合した端子台１をレールに装着した状態を示す平面図である。
【図４】集合した端子台１をレールに装着した状態を示す側面図である。
【図５】杆状導通片２０を一部切欠して示す、正面図である。
【図６】杆状導通片２０の一辺側の平面図である。
【図７】杆状導通片２０の一辺側の側面図である。
【図８】図６のＡ−Ａ断面図である。
【図９】可動押圧片３０、及びリード線挿入確認片４０の正面図である。
【図１０】リード線挿入確認片４０を保持する可動押圧片３０の縦断正面図である。
【図１１】可動押圧片３０の平面図である。
【図１２】図９のＢ−Ｂ断面図である。
【図１３】可動押圧片３０の底面図である。
【図１４】可動押圧片３０の左側面図である。
【図１５】可動押圧片３０の右側面図である。
【図１６】リード線８０挿入に伴う、リード線挿入確認片４０の変位態様を示す説明図（イ），（ロ），（ハ）である。
【図１７】接続部３，３への結線手順を示す説明図（イ），（ロ）である。
【図１８】接続部３，３への結線手順を示す説明図（ハ），（ニ）である。
【図１９】リード線８０の接続過程を示す説明図（イ），（ロ），（ハ）である。
【図２０】リード線８０挿入に伴う、リード線挿入確認片４０ａの変位態様を示す説明図（イ），（ロ）である。
【符号の説明】
１端子台
２絶縁性基板
２０杆状導通片
３０，３０’ 可動押圧片
３１リード線挿入孔
４０リード線挿入確認片
４２傾動変換片
４４作動孔
４７薄肉保持部
Ｘ，Ｘ’ 座定位置
Ｙ，Ｙ’ 確認位置[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a terminal block for electrically connecting a plurality of lead wires via a conductive piece.
[0002]
[Prior art]
Various terminal blocks have been proposed in which a hook-shaped conductive piece is mounted transversely on an insulating substrate, and a plurality of connection portions are provided along the hook-shaped conductive piece so that lead wires are electrically connected to the hook-shaped conductive piece. ing. These terminal blocks are overlapped in the front-rear direction and held on the installation rail (see, for example, Patent Document 1).
[0003]
Further, in the above-described terminal block, each connection portion is formed integrally with the bowl-shaped conductive piece and has a V-shaped breaking blade that protrudes along the longitudinal direction of the conductive piece, and a substantially vertical lead wire. An insertion hole and a lever rod through-hole are formed and move along the bowl-shaped conducting piece, so that the lead wire insertion hole is retracted from the V-shaped breaking blade and a connection position where the V-shaped breaking blade overlaps vertically The movable pressing piece to be positioned, the insulator rod working port formed on the bottom surface of the bowl-shaped conducting piece, facing the working area of the lead wire insertion hole from the open position to the connecting position, and formed on the insulating substrate, The present inventor has proposed a configuration including an operation groove that supports the lever rod inserted through the lever rod through hole and the lever rod operation port so as to be tiltable therein, and has already filed a patent application (Japanese Patent Application 2002). -090662).
[0004]
In such a configuration, the movable pressing piece is moved along with the follow-up of the lever rod through the lever rod for tilting movement in the operation groove, and the lead wire inserted into the lead wire insertion hole at the connection position is moved to V The lead-breaking blade is not easily inserted, and the lead wire and the V-shaped breaking blade are electrically connected.
[0005]
[Patent Document 1]
Japanese Patent Laid-Open No. 10-224459
[Problems to be solved by the invention]
In the terminal block described above, in order to hold the lead wire firmly with the V-shaped breaking blade, the lead wire is inserted in the state where the lead wire insertion end is inserted to the seating position at the back of the lead wire insertion hole. However, when the terminal block is connected to the front and back, it is difficult to see where the lead wire is inserted in the insertion hole. Then, it is judged by the response at the time of insertion that the lead wire has been inserted to the sitting position. However, when the lead wire is inserted, the insertion end may be caught in the middle of the lead wire insertion hole. With such a judgment method, it is difficult to determine that the insertion end has been inserted into the seating position. This is a cause of complicated work.
[0006]
The present invention is an attempt to solve such a problem, and an object of the present invention is to provide a terminal block in which the insertion end of the lead wire is inserted to the seating position of the lead wire insertion hole can be visually recognized from the outside. To do.
[0007]
[Means for Solving the Problems]
  In the present invention, the hook-shaped conductive piece is mounted in a transverse manner on the insulating substrate,Inserted from the lead wire insertion holeIn the terminal block comprising a plurality of connecting portions along which the lead wires are electrically connected to the bowl-shaped conducting piece, along the bowl-shaped conducting piece,When the insertion end of the lead wire inserted into the lead wire insertion hole is in the sitting position, the upper end of the lead wire insertion confirmation piece is displaced to a confirmation position visible from the outside by the pressing action of the insertion end. Provided with a check piece displacement meansThis is a terminal block.
  here,Each connecting part is formed integrally with a bowl-shaped conducting piece, and has a V-shaped breaking blade whose blade edge protrudes along the longitudinal direction of the conducting piece, a substantially vertical lead wire insertion hole, and an insulator rod through-hole. A movable pressing piece that moves along the hook-shaped conducting piece and is positioned at an open position where the lead wire insertion hole is retracted from the V-shaped breaking blade and a connection position that overlaps the V-shaped breaking blade vertically; Inserted from the lever rod operating port that is formed in the conductive piece and that opposes the operating area of the lead wire insertion hole from the open position to the connection position, and the rod through hole and lever rod operating port that are formed in the insulating substrate And an operation groove for supporting the lever lever so as to be able to tilt inside. The tilting movement of the lever rod within the operation groove moves the movable pressing piece along with the follow-up of the lever rod through-hole, and leads at the connection position. Insert the lead wire inserted in the wire insertion hole into the V-shaped breaking blade and And the V-shaped breaking blade are electrically connected to each other, and the lead wire insertion confirmation piece is movably held on the movable pressing piece, and the lead wire inserted into the lead wire insertion hole is inserted. It is characterized by comprising a confirmation piece displacing means for displacing the upper end of the lead wire insertion confirmation piece to a confirmation position that can be visually recognized from the outside by the pressing action of the insertion end when the end is in the seating position. Terminal blockIs proposed. That is, the present invention relates to a configuration in which a lead wire insertion hole is formed in the movable pressing piece.
[0008]
In such a configuration, when the lead wire is inserted to the sitting position, the upper end of the lead wire insertion confirmation piece becomes visible from the outside, and the operator is informed that the lead wire has been properly inserted. It becomes. For this reason, it is possible to prevent connection failure of the lead wires and to perform quick connection work. Here, at least the upper end of the lead wire insertion confirmation piece can be configured with a different color or a different pattern from the movable pressing piece so as to be easily recognized.
[0009]
  Here, the confirmation piece displacement means isBy the side of the lead wire insertion holeForming a vertical working hole, holding the lead wire insertion confirmation piece in the working hole so as to be movable up and down,Lead wire insertion holeIn addition, one end protruding from the holding portion is linked to the lower portion of the lead wire insertion confirmation piece, and the other end protruding from the holding portion to the other is fixed to the lead wire insertion end of the lead wire insertion hole. When the insertion end of the lead wire inserted into the lead wire insertion hole is in the seating position, the other end is pressed downward by the insertion end so that the holding portion is at the center. Proposed configuration is equipped with a tilt conversion piece that tilts and moves the lead wire insertion confirmation piece upward by moving one end upward and displaces the upper end to the confirmation positionIs done.Here, the seating region refers to the seating position of the lead wire insertion end, which is the lead wire insertion end, and its peripheral region. In such a configuration, due to the tilting operation of the tilt conversion piece, the upper end of the lead wire insertion confirmation piece is displaced to the upper confirmation position as the lead wire insertion end is inserted into the seating position.
[0010]
  Then, the tilt conversion piece is formed integrally with the movable pressing piece via the thin holding part, and when the tilt conversion piece is pressed by the insertion end of the lead wire, the thin holding part is elastically deformed, and the tilt conversion piece The configuration is proposed in which the upper end of the lead wire insertion confirmation piece is displaced to the confirmation position.Is done.In such a configuration, when the lead wire insertion end is inserted to the seating position, the thin-wall holding portion is elastically deformed, and the tilt conversion piece is tilted, and the tilt conversion piece confirms the upper end of the lead wire insertion confirmation piece. Push up to the position. On the other hand, when the lead wire insertion end is retracted from the seating position, the thin holding portion returns to the steady position, so the tilt conversion piece pushes down the lead wire insertion confirmation piece, and the lead wire insertion confirmation piece Will be withdrawn from the confirmation position. Thus, by forming the tilt conversion piece integrally with the movable pressing piece, the number of parts can be reduced. That is, as shown in the embodiment, the tilt conversion piece is required to have a fine shape having a length of 6 mm or less and a width of about 3 mm as a design example. However, as described above, the tilt conversion piece is integrated with the movable pressing piece. By forming and coupling through the thin-wall holding part, the thin-wall holding part can be tilted through the restoring elasticity due to the flexibility of the thin-wall holding part, and can be manufactured without requiring a support shaft or the like. be able to. Moreover, the operation | work which attaches the tilt conversion piece to a movable press piece becomes unnecessary.
[0011]
  Confirmation piece displacement meansLead wire insertion holeThe lead wire insertion confirmation piece is tiltably held on the lead wire insertion confirmation piece and the lower end of the lead wire insertion confirmation piece is disposed so as to protrude into the seating region of the lead wire insertion end of the lead wire insertion hole. When the insertion end of the lead wire inserted into the fixed position is positioned, the lower end of the lead wire insertion confirmation piece is pressed against the insertion end, so that the lead wire insertion confirmation piece tilts and the upper end is brought to the confirmation position. Proposal of a configuration to be displacedIs done.In such a configuration, the lead wire insertion end to be inserted into the seating position directly presses the lower end portion of the lead wire insertion confirmation piece, tilts the lead wire insertion confirmation piece, and the lead wire insertion confirmation piece The upper end is displaced to the confirmation position.
[0012]
  When the lead wire insertion confirmation piece is formed integrally with the movable pressing piece via the thin-wall holding portion, and the lower end of the lead wire insertion confirmation piece is pressed by the lead wire insertion end, the thin-wall holding portion is elastically deformed. Also proposed is a configuration in which the upper end of the lead wire insertion confirmation piece is tilted and displaced to the confirmation positionIs done.In such a configuration, since the lead wire insertion confirmation piece is formed integrally with the movable pressing piece via the thin holding portion, the number of parts can be reduced.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 1 shows a terminal block 1 according to an embodiment of the present invention, which is mainly composed of a symmetrical insulating substrate 2 (see FIG. 2) formed in a plate shape by an insulating resin material such as polycarbonate. The conductive piece 20 is attached to the insulating substrate 2 in a transverse manner. Further, on both sides of the terminal block 1, connecting portions 3 and 3 for connecting the lead wires 80 to the bowl-shaped conducting piece 20 are disposed.
[0014]
As shown in FIG. 2, the insulating substrate 2 is formed by projecting the defining wall 4 with a predetermined thickness from the back plate 10 so that the seating groove surfaces 5, 5, etc. are formed open on one side. Become. That is, the upper surface of the insulating substrate 2 is formed in a square shape inclined at an equal angle from the thick top portion 7 to both sides, and the inside of the inclined side is partitioned into a substantially rectangular shape along the inclined side by the defining wall 4. The seating groove surfaces 5 and 5 are connected to each other, and the connection ports 6 and 6 are opened to open the seating groove surfaces 5 and 5 upward. Further, at the bottom of the seating groove surfaces 5 and 5, there is defined an operation groove 8 that expands upward so that the tip end portion of the lever rod 82 (see FIGS. 17 and 18) is tiltably supported by the support side edge 9. A partition is formed by the wall 4.
[0015]
Further, a connection hole 55 is formed at an appropriate position on the front surface of the defining wall 4 formed around the insulating substrate 2, and the connection protrusion (see FIG. The terminal blocks 1 are connected to each other in a superposed manner. Further, an end plate 57 having substantially the same outer shape as the terminal block 1 is attached to the defining wall 4 of the terminal block 1 at the end (see FIGS. 3 and 4).
[0016]
In this way, as shown in FIGS. 1, 3, and 4, the terminal block 1 has a large number of connecting pieces 15 and 15 engaged with the connecting protrusions 71 and 71 of the installation rail 70 described above, and a large number of the terminal blocks 1 are mounted on the installation rail 70. Connected in a superposition. Further, in order to fix the terminal block row on the installation rail 70, fixing brackets 76 are fixed to the installation rail 70 with screws 77.
[0017]
Further, as shown in FIG. 1, the conductive piece 20 is mounted so as to extend over the seating groove surfaces 5 and 5, and has a hook-like shape bent with respect to the back plate 10 of the insulating substrate 2. Each side portion of the hook-shaped conductive piece 20 mounted on each seating groove surface 5, 5 constitutes a main part of the connecting portions 3, 3. The hook-shaped conductive piece 20 will be described in more detail. To do.
[0018]
As shown in FIGS. 5 to 8, the bowl-shaped conducting piece 20 is located on each side portion mounted on each seating groove surface 5, 5, and includes a bottom surface portion 21 a and side surfaces that stand from both sides of the bottom surface portion 21 a. It has a U-shaped cross section composed of the portions 21b and 21b. Further, on both sides in FIG. 3, tongue pieces 21c and 21c extend from the side faces 21b and 21b in a curved shape, and their edges are opposed in contact with each other, and the inside of the tongue pieces 21c and 21c. A V-shaped breaking blade 22 whose edge is projected along the longitudinal direction of the bowl-shaped conducting piece 20 is cut at the end edge.
Furthermore, on the bottom surface portion 21a, portions that face the opening of the operation groove 8 are cut out to form lever rod operation ports 23,23.
[0019]
Next, as shown in FIG. 1, the movable pressing piece 30 is located between the side surface portions 21 b and 21 b of the hook-shaped conductive piece 20 along the hook-shaped conductive piece 20. Mounted to move in the direction. The movable pressing piece 30 is formed by molding an insulating synthetic resin. As shown in FIGS. 9 and 10, a lead wire insertion hole 31 is formed on the right side (hereinafter, right side) in FIGS. On the left side (hereinafter referred to as the left side), insulator rod through holes 32 are formed in the vertical direction. In addition, an operation hole 44 is formed in the vertical direction between the lead wire insertion hole 31 and the lever rod through hole 32, and the lead wire insertion confirmation piece 40 according to the present invention is moved up and down inside the operation hole 44. Held possible.
[0020]
9 to 15, the movable pressing piece 30 is located at the lower right side of the base 33 and the side 33 of the bowl-shaped conductive piece. It includes a U-shaped pressing portion 34 that is fitted between the portions 21b and 21b and is fitted in the tongue pieces 21c and 21c at a connection position II described later, and is thin on the front and rear.
[0021]
On the left side of the base portion 33, the lever rod through hole 32 is formed in a penetrating shape in the vertical direction so as to be orthogonal to the longitudinal direction of the bowl-shaped conducting piece 20. The lever rod through-hole 32 has a hole shape with no significant play with respect to the shaft rod of the lever rod 82 to be inserted, and the lever rod 82 is inserted into the lever rod operating port 23 through the lever rod through-hole 32. By tilting, the lever rod 82 presses the inner surface of the lever rod through hole 32, and the movable pressing piece 30 is positioned at the inner open position I and the outer connection position II. Conversion is performed (see FIGS. 17 and 18).
[0022]
Further, the lead wire insertion hole 31 formed in the right side portion of the movable pressing piece 30 communicates with a through portion 31a vertically passing through the right side of the base portion 33 and a lower end of the through portion 31a. The open portion 31b opens in the direction, and the lower portion of the open portion 31b is the seating position X of the lead wire insertion end 81.
[0023]
Further, a tongue-like lead wire holding piece 46 is provided on the right inner side surface of the opening portion 31b so as to protrude downward to the left. When the lead wire 80 is inserted, the lead wire holding piece 46 is pressed by the lead wire insertion end 81 and elastically deforms the distal end portion to the lower right. Then, the lead wire insertion end 81 is pressed against the left side surface of the open portion 31b by the elastic repulsive force, and the lead wire insertion end 81 is held at the seating position X (see FIG. 16).
[0024]
Furthermore, thin plate-like gap plates 45 a and 45 b that are positioned on both sides of the lead wire insertion hole 31 and fitted into the V-shaped breaking blade 22 are formed on the upper portion of the pressing portion 34. When the movable pressing piece 30 is displaced from the open position I to the connection position II, the gap plates 45a and 45b enter between the tongue pieces 21c and 21c, and the covering portion of the lead wire 80 is appropriately cut. In this way, the tip of the V-shaped breaking blade 22 is pushed wide.
[0025]
A dustproof valve 43 is integrally formed on the left side of the movable pressing piece 30. The dustproof valve 43 includes a bent dustproof piece 43a having a V-shape in front view protruding from the left edge of the base 33, and a tongue-like flexible protrusion protruding downward from the bent portion of the bent dustproof piece 43a. It consists of a dustproof piece 43b. The bent dustproof piece 43 a fits the fitting portion 60 formed at the left end portion into the fitting groove 61 formed in the thick top portion 7 of the insulating substrate 2. And in the open position I of the movable press piece 30, it folds between the movable press piece 30 and the thick top part 7, and extends in the horizontal direction at the connection position II of the movable press piece 30. The gap generated after the displacement to the connection position II is shielded above the hook-shaped conductive piece 20. On the other hand, the flexible dustproof piece 43b tilts as the bent dustproof piece 43a expands and contracts, protrudes in the direction of the operation groove 8 at the open position I of the movable pressing piece 30, and is inserted through the lever rod through hole 32. To the operation groove 8, and at the connection position II of the movable pressing piece 30, the insulator rod through-hole 32 is shielded downward, and dust falls onto the cage-shaped conducting piece 20 from the insulator rod through-hole 32. To prevent.
[0026]
Furthermore, a protruding portion 38 is formed on the upper surface of the movable pressing piece 30 upward. At the upper end of the projecting portion 38, index recesses 90, 90 are formed at the front and rear edges, and the index recess 90 is a mark indicating the open position I formed in the connection ports 6, 6 of the insulating substrate 2. By making the protruding portion 38 coincide with the mark 39b indicating 39a and the connection position II, the movable pressing piece 30 can be surely positioned at the open position I and the connection position II.
[0027]
In addition, protrusions 36 are formed on the lower front and back surfaces of the pressing portion 34, while protrusions 25 are formed on the side surface portions 21b and 21b of the bowl-shaped conductive piece 20 inwardly ( Figures 5-8). The protrusions 36 and 36 and the protrusion 25 are configured such that the movable pressing piece 30 is in contact with each other and holds the movable pressing piece 30 in a state where the movable pressing piece 30 is located at the open position I or the connection position II. It has become.
[0028]
Next, the lead wire insertion confirmation piece 40 and confirmation piece displacement means for displacing the lead wire insertion confirmation piece 40, which are the main parts of the present invention, will be described with reference to FIGS. In the present embodiment, the confirmation piece displacing means is a tilt conversion piece that raises the lead wire insertion confirmation piece 40 by the action of the operation hole 44 that holds the lead wire insertion confirmation piece 40 so as to be movable up and down and the lead wire insertion end 81. 42.
[0029]
As shown in FIG. 9, the lead wire insertion confirmation piece 40 has a long bowl shape with a notch 91 formed in the lower part and is inserted into the operation hole 44 of the movable pressing piece 30 as shown in FIG. And is held up and down. Further, the operating hole 44 is formed vertically in the central portion of the movable pressing piece 30, and its cross section has a shape with no play with respect to the inserted lead wire insertion confirmation piece. The upper end of the operating hole 44 opens to the upper surface of the projecting portion 38, and the upper portion thereof is set as a confirmation position Y of the upper end of the lead wire insertion confirmation piece 40. On the other hand, the lower end of the operation hole 44 opens to the left side surface of the opening portion 31b of the lead wire insertion hole 31, and the notch portion 91 of the held lead wire insertion confirmation piece 40 is exposed to the opening portion 31b. Here, the movable pressing piece 30 is made of red resin, and the lead wire insertion confirmation piece 40 is made of white resin, and the lead wire insertion confirmation piece 40 has its upper end at the confirmation position Y by contrast with the movable pressing piece 30. In this case, it is easy to see.
[0030]
On the other hand, the tilt conversion piece 42 has a hook-like shape that protrudes on both sides from the lower end of the thin holding portion 47 that hangs down below the gap plate 45 b, and is formed integrally with the movable pressing piece 30 via the thin holding portion 47. The Of the two ends of the tilt conversion piece 42, the pressure receiving end 48 protruding to the open portion 31b is disposed with its tip above the seating position X so as to come into contact with the lead wire insertion end 81 when the lead wire 80 is inserted. The engaging end 50 projecting toward the lower opening side of the operating hole 44 is fitted into the notch 91 of the lead wire insertion confirmation piece 40 at its tip. The tilt conversion side of the present embodiment has a minute shape with a length of 5 mm and a front and rear width of 2 mm, and is integrally molded with the movable pressing piece 30 via the thin holding portion 47, whereby the tilt conversion piece 42 is assembled. The tilt conversion piece 42 can be tilted without providing a holding part such as a support shaft separately.
[0031]
Next, the tilting mode of the tilt conversion piece 42 that accompanies the insertion of the lead wire 80 into the seating position X will be described with reference to FIG.
First, in a state where the lead wire 80 is not inserted into the lead wire insertion hole 31, the thin-wall holding portion 47 is in a steady state hanging downward, and the lead wire insertion confirmation piece 40 is engaged with the tilt conversion piece 42. The end 50 is locked below the operation hole 44, and the upper end thereof is retracted into the operation hole 44 (FIG. 16A). When the lead wire 80 is inserted into the lead wire insertion hole 31, the lead wire insertion end 81 comes into contact with the pressure receiving end 48 of the tilt conversion piece 42, and the pressure receiving end 48 is formed by the lead wire insertion end 81. Due to the pressing action, the thin-wall holding part 47 elastically deforms the lower end to the left and tilts the tilt conversion piece 42 to the left. Along with this, the engagement end 50 of the tilt conversion piece 42 pushes up the notch 91, and the lead wire insertion confirmation piece 40 starts to rise (FIG. 16B). Further, when the lead wire insertion end 81 is inserted to the seating position X, the thin-wall holding portion 47 is further elastically deformed, and the lead wire insertion confirmation piece 40 is operated at its upper end by the engagement end 50 of the tilt conversion piece 42. From the upper opening of the hole 44, it protrudes to the confirmation position Y (FIG. 16C).
[0032]
On the other hand, if the lead wire 80 is pulled out from the insertion hole 31 with the insertion end 81 positioned at the seating position X (FIG. 16C), the insertion end 81 is retracted and the The holding portion 47 returns to the steady position, the tilt conversion piece 42 tilts to the right, and the engagement end 50 pushes down the lead wire insertion confirmation piece 40, and the upper end of the lead wire insertion confirmation piece 40 is the operation hole 44. (Fig. 16a, b). That is, if the lead wire insertion end 81 is inserted to the seating position X, the upper end of the lead wire insertion confirmation piece 40 protrudes to the confirmation position Y, and if the lead wire insertion end 81 is retracted from the seating position X, the lead wire The upper end of the insertion confirmation piece 40 is retracted downward from the confirmation position Y. Therefore, whether or not the lead wire insertion end 81 in the lead wire insertion hole 31 has been inserted up to the seating position X can be visually determined by the presence or absence of the lead wire insertion confirmation piece 40 at the confirmation position Y. Become.
[0033]
A procedure for connecting the terminal block 1 to the connecting portions 3 and 3 will be described with reference to FIGS.
When the lead wire 80 is not connected, the movable pressing piece 30 is in the open position I (see FIG. 17A). In this state, when the lead wire 80 is inserted into the lead wire insertion hole 31 from the connection ports 6 and 6, and the insertion end 81 of the lead wire 80 reaches the seating position X, as described above, the tilt conversion piece 42 is inserted. By tilting, the upper end of the lead wire insertion confirmation piece 40 protrudes to the confirmation position Y and can be easily visually recognized from the outside (see FIG. 17B).
[0034]
Then, the lever rod 82 is inserted from the lever rod through hole 32 and the lever rod operating port 23, and the tip thereof is brought into contact with the bottom edge of the operation groove 8. Next, when the lever rod 82 is tilted in the operation groove 8 with the support side edge 9 as a fulcrum (see FIG. 18C), the lever rod through hole 32 has little play with respect to the lever rod 82. The movable pressing piece 30 is moved along the rod-shaped conducting piece 20 by an amount corresponding to the width displacement of the lever rod 82 in the lever rod through hole 32 under the action of the turning moment by the tilting operation of the lever rod 82. To the connection position II (see FIG. 18D).
[0035]
Due to the displacement of the movable pressing piece 30 to the connection position II, the pressing part 34 of the movable pressing piece 30 is fitted into the tongue pieces 21c and 21c, and the lead wire insertion hole 31 is vertically connected to the V-shaped breaking blade 22. Overlap. As shown in FIG. 19, the lead wire 80 inserted into the lead wire insertion hole 31 is pressed against the V-shaped breaking blade 22 by the inner surface of the lead wire insertion hole 31 (FIG. 19B), and the tongue piece portion. It fits between the end edges of 21c and 21c (FIG. 19C). Here, since the cutting edge of the V-shaped breaking blade 22 protrudes along the longitudinal direction, the cutting edge bites into the coating 84 and the coating 84 is broken to such an extent that the conducting wire 83 is not cut. It is electrically connected to the blade 22. Further, the insertion end 81 of the lead wire 80 is sandwiched between the V-shaped breaking blades 22 and is held so as not to be pulled out.
[0036]
Thus, in the terminal block 1 of the present embodiment, when the lead wire insertion end 81 is properly inserted into the seating position X, the upper end of the lead wire insertion confirmation piece 40 protrudes to the confirmation position Y. It becomes easily visible. For this reason, in the wiring work, the operator can clearly confirm that the lead wire 80 has been properly inserted into the lead wire insertion hole 31, and the wiring work can be performed quickly and stably. Further, by forming the tilt conversion piece 42 integrally with the movable pressing piece 30, the number of parts can be reduced, and the work of attaching the tilt conversion piece 42 to the movable pressing piece 30 is not required, and the fine tilt conversion piece 42 is eliminated. It is possible to efficiently manufacture the terminal block 1 including
[0037]
Next, FIG. 20 shows a movable pressing piece 30a according to another embodiment of the present invention. In this embodiment, the lead wire insertion confirmation piece 40a is formed integrally with the movable pressing piece 30a via the thin holding portion 47a. The lead wire insertion confirmation piece 40a has a hook-like shape that protrudes up and down from the thin-wall holding portion 47a, has a lower end protruding above the seating position X ′, and an upper end protruding into the operation hole 44a. Due to the elastic deformation, tilting is possible. Here, paint is applied to the upper end of the lead wire insertion confirmation piece 40a, and the color is different from that of the other parts of the movable pressing piece 30a, so that it can be easily seen from the outside at the confirmation position Y '.
[0038]
When the lead wire 80 is not inserted (FIG. 20A), the upper end of the lead wire insertion confirmation piece 40 is located to the left of the confirmation position Y ′. In such a position, since the upper part is shielded, it is difficult to visually recognize from the outside. When the lead wire 80 is inserted into the lead wire insertion hole 31 and the insertion end 81 is inserted to the seating position X ′, the lower end of the lead wire insertion confirmation piece 40a is pressed by the insertion end 81, The thin holding portion 47a elastically deforms the side end downward, and the upper end of the lead wire insertion confirmation piece 40a tilts to the right to be a confirmation position Y ′, which is easily visible from the outside. Other configurations are the same as those in the above-described embodiment, and a description thereof will be omitted. Thus, if the movable pressing piece 30a and the lead wire insertion confirmation piece 40a are integrally formed, the number of parts can be reduced and the assembly process of the terminal block can be simplified.
[0039]
Although the embodiments have been described above, the present invention is not limited to the configurations of the above embodiments, and can be appropriately changed within the scope of the gist of the present invention. For example, it is not necessary to have one connecting portion 3 on each of the left and right sides, and a plurality of connecting portions 3 may be provided by arranging a plurality of movable pressing pieces 30 on one side. Moreover, the upper end of the lead wire insertion confirmation piece 40 should just be visually recognizable at the confirmation position Y, and the movable pressing piece 30 and the lead wire insertion confirmation piece 40 are not limited to the color scheme of this embodiment. .
[0040]
【The invention's effect】
  The present inventionWhen the insertion end of the lead wire inserted into the lead wire insertion hole is in the sitting position, the upper end of the lead wire insertion confirmation piece is displaced to a confirmation position visible from the outside by the pressing action of the insertion end. Checking piece displacement meansBecause I preparedThe lead wire insertion confirmation piece can visually confirm that the insertion end of the lead wire has been inserted to the seating position, so that connection failure of the lead wire can be prevented and the connection work can be speeded up.
[0041]
  Here, the confirmation piece displacement means isBy the side of the lead wire insertion holeForming a vertical working hole, holding the lead wire insertion confirmation piece in the working hole so as to be movable up and down,In the lead wire insertion hole,One end protruding from the holding portion is linked to the lower portion of the lead wire insertion confirmation piece, and the other end protruding from the holding portion to the other is within the seating region of the lead wire insertion end of the lead wire insertion hole. When the insertion end of the lead wire inserted into the lead wire insertion hole becomes the seating position, the other end is pressed downward by the insertion end and tilted around the holding portion. The lead wire insertion confirmation piece is moved upward by the upward movement of one end, and the tilt conversion piece for displacing the upper end to the confirmation position is provided.in case of,By tilting the tilt conversion piece, the pressing action of the lead wire insertion end can be transmitted to the lead wire insertion confirmation piece, and the upper end of the lead wire insertion confirmation piece can be displaced to the confirmation position.
[0042]
  Then, the tilt conversion piece is formed integrally with the movable pressing piece via the thin holding part, and when the tilt conversion piece is pressed by the insertion end of the lead wire, the thin holding part is elastically deformed, and the tilt conversion piece Tilt to move the upper end of the lead wire insertion confirmation piece to the confirmation position.If you doAssembling work of the tilt conversion piece to the movable pressing piece is not required, the number of parts can be reduced, and a tilt conversion piece having a minute shape suitable for transmitting the pressing action of the lead wire insertion end to the lead wire insertion confirmation piece can be produced. .
[0043]
  Also, the confirmation piece displacement means isIn the lead wire insertion holeHold the lead wire insertion confirmation piece so that it can tilt, and place the lower end of the lead wire insertion confirmation piece so that it protrudes into the seating area of the lead wire insertion end of the lead wire insertion hole. When the insertion end of the inserted lead wire is in the sitting position, the lower end of the lead wire insertion confirmation piece is pressed against the insertion end, so that the lead wire insertion confirmation piece tilts and the upper end is displaced to the confirmation position. Is whatin case of,Since the lead wire insertion confirmation piece is directly displaced at the lead wire insertion end, the confirmation piece displacing means can be made simple and does not require an intervening mechanism.
[0044]
  Further, the lead wire insertion confirmation piece is formed integrally with the movable pressing piece via the thin holding portion, and when the lower end of the lead wire insertion confirmation piece is pressed by the insertion end of the lead wire, the thin holding portion is elastic. Deform and tilt the upper end of the lead wire insertion confirmation piece so that it is displaced to the confirmation positionif,By integrating the lead wire insertion confirmation piece with the movable pressing piece, the number of parts can be reduced.
[Brief description of the drawings]
FIG. 1 is a front view showing a terminal block 1 of the present invention. The defining wall 4 is shown with a cross section.
FIG. 2 is a front view of an insulating substrate 2;
FIG. 3 is a plan view showing a state in which the assembled terminal block 1 is mounted on a rail.
FIG. 4 is a side view showing a state in which the assembled terminal block 1 is mounted on a rail.
FIG. 5 is a front view showing the bowl-shaped conducting piece 20 with a part cut away.
6 is a plan view of one side of the bowl-shaped conducting piece 20. FIG.
7 is a side view of one side of the bowl-shaped conductive piece 20. FIG.
8 is a cross-sectional view taken along the line AA in FIG.
9 is a front view of the movable pressing piece 30 and the lead wire insertion confirmation piece 40. FIG.
10 is a longitudinal front view of the movable pressing piece 30 holding the lead wire insertion confirmation piece 40. FIG.
11 is a plan view of the movable pressing piece 30. FIG.
12 is a cross-sectional view taken along the line BB in FIG.
13 is a bottom view of the movable pressing piece 30. FIG.
14 is a left side view of the movable pressing piece 30. FIG.
15 is a right side view of the movable pressing piece 30. FIG.
FIGS. 16A and 16B are explanatory views (A), (B), and (C) showing how the lead wire insertion confirmation piece 40 is displaced as the lead wire 80 is inserted. FIGS.
FIGS. 17A and 17B are explanatory views (a) and (b) showing a connection procedure to the connection units 3 and 3; FIGS.
FIGS. 18A and 18B are explanatory views (c) and (d) showing a connection procedure to the connection units 3 and 3; FIGS.
19 is an explanatory diagram (a), (b), (c) showing a connection process of the lead wire 80. FIG.
FIGS. 20A and 20B are explanatory views (A) and (B) showing how the lead wire insertion confirmation piece 40a is displaced as the lead wire 80 is inserted.
[Explanation of symbols]
1 Terminal block
2 Insulating substrate
20 bowl-shaped conducting piece
30, 30 'movable pressing piece
31 Lead wire insertion hole
40 Lead wire insertion confirmation piece
42 Tilt conversion piece
44 Working hole
47 Thin wall holder
X, X 'sitting position
Y, Y 'confirmation position

Claims

In the terminal block comprising a plurality of connecting portions, in which the conductive pieces are mounted transversely on the insulating substrate, and the lead wires inserted from the lead wire insertion holes are electrically connected to the conductive pieces,
When the insertion end of the lead wire inserted into the lead wire insertion hole is in the sitting position, the upper end of the lead wire insertion confirmation piece is displaced to a confirmation position visible from the outside by the pressing action of the insertion end. Provided with a check piece displacement means,
Confirmation piece displacement means
A vertical working hole is formed on the side of the lead wire insertion hole, and the lead wire insertion confirmation piece is held in the working hole so as to be movable up and down,
The lead wire insertion hole is tiltably held, and one end protruding from the holding portion is linked to the lower portion of the lead wire insertion confirmation piece, and the other end protruding from the holding portion to the other is inserted into the lead wire insertion hole. When the insertion end of the lead wire inserted into the lead wire insertion hole reaches the seating position, the other end is pressed downward and held by the insertion end. A terminal block comprising: a tilt conversion piece that tilts about a portion, moves the lead wire insertion confirmation piece upward by moving one end, and displaces the upper end to a confirmation position .

The tilt conversion piece is formed integrally with the movable pressing piece via the thin holding part, and when the tilt conversion piece is pressed by the insertion end of the lead wire, the thin holding part is elastically deformed to tilt the tilt conversion piece. The terminal block according to claim 1, wherein the upper end of the lead wire insertion confirmation piece is displaced to a confirmation position.

A terminal block having a plurality of connecting portions along the bowl-shaped conductive piece, the conductive piece being mounted transversely on the insulating substrate, and the lead wire inserted from the lead wire insertion hole is electrically connected to the conductive piece. In
When the insertion end of the lead wire inserted into the lead wire insertion hole is in the sitting position, the upper end of the lead wire insertion confirmation piece is displaced to a confirmation position visible from the outside by the pressing action of the insertion end. Provided with a check piece displacement means,
Confirmation piece displacement means
While holding the lead wire insertion confirmation piece in the lead wire insertion hole so that it can tilt,
The lower end of the lead wire insertion confirmation piece is disposed so as to protrude into the seating region of the lead wire insertion end of the lead wire insertion hole, and the insertion end of the lead wire inserted into the lead wire insertion hole is positioned at the seating position. In this case, the terminal block is characterized in that when the lower end of the lead wire insertion confirmation piece is pressed against the insertion end, the lead wire insertion confirmation piece tilts and displaces the upper end to the confirmation position .

When the lead wire insertion confirmation piece is formed integrally with the movable pressing piece via the thin-wall holding portion, and the lower end of the lead wire insertion confirmation piece is pressed by the lead wire insertion end, the thin-wall holding portion is elastically deformed. The terminal block according to claim 3 , wherein the upper end of the lead wire insertion confirmation piece is tilted and displaced to the confirmation position.

In the terminal block comprising a plurality of connecting portions along the conductive piece, the conductive piece is mounted in a transverse manner on the insulating substrate, and the lead wire inserted from the lead wire insertion hole is electrically connected to the conductive piece.
Each connection is
A break blade formed integrally with the conductive piece and projecting the blade edge along the longitudinal direction of the conductive piece;
An almost vertical lead wire insertion hole and a lever rod through hole are formed and moved along the conductive piece to an open position where the lead wire insertion hole retracts from the breaking blade and a connecting position where the breaking blade overlaps with the breaking blade. A movable pressing piece to be positioned;
An insulator rod operating port formed on the bowl-shaped conducting piece and facing the operating region of the lead wire insertion hole from the open position to the connection position;
An operation groove that is formed in the insulating substrate and supports the lever rod inserted from the lever rod through hole and the lever rod operation port so as to be tiltable inside;
Due to the tilting movement of the lever rod in the operation groove, the movable pressing piece is moved in accordance with the follower of the lever rod through hole, and the lead wire inserted into the lead wire insertion hole at the connection position is made difficult to break the blade. There is an electrical connection between the conducting wire and the breaking blade,
The lead wire insertion confirmation piece is movably held on the movable pressing piece, and when the insertion end of the lead wire inserted into the lead wire insertion hole is in the seating position, the lead wire insertion confirmation is performed by the pressing action of the insertion end. A terminal block comprising: a confirmation piece displacing means for displacing the upper end of the piece to a confirmation position visible from the outside .