JP2004063212A

JP2004063212A - Terminal device

Info

Publication number: JP2004063212A
Application number: JP2002218793A
Authority: JP
Inventors: Minoru Honda; 本田　稔
Original assignee: Matsushita Electric Works Ltd
Current assignee: Panasonic Electric Works Co Ltd
Priority date: 2002-07-26
Filing date: 2002-07-26
Publication date: 2004-02-26
Anticipated expiration: 2022-07-26
Also published as: JP3969236B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a terminal device for easily confirming from outside the completion of connection of an electric wire, and also for easily disconnecting the already connected electric wire with no special tool. <P>SOLUTION: When an electric wire 4 is press-inserted in a device body 3 from an electric wire insert hole 33, it presses a pressurizing part 11b of a presser leaf spring 11a of a presser spring part 11 outward to deflect the presser leaf spring 11a while advancing to the depth of a quick-connection terminal part 1. The tip of a core wire 4a soon hits a press receiving body 23 of a display/electric wire release mechanism 2 to apply an upward force to the press receiving body 23. The upward force applied on the press receiving body 23 rotates a lever 21 so that its tip moves from the bottom position of a thin square hole 30 to the top position. At the same time, the pressurizing of a locking leaf spring 10b by a terminal pressurizing body 22 is released and the locking leaf spring 10b locks the core wire 4a of the electric wire 4. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、端子装置に関するものである。
【０００２】
【従来の技術】
端子装置としては、端子装置を納装している器体外部から電線挿入孔を介して電線先部を器体内部に差し込むだけで電線の心線を鎖錠できる速結式の端子装置が従来から提供されている。この端子装置はねじ端子を用いるものに比べてねじ緩みなどがなく安定した接続ができるということで広く普及している。
【０００３】
【発明が解決しようとする課題】
しかしながら上記の従来の端子装置は、電線が確実に結線されているのか否かが外部から分からないため、施工者に結線に対して不安視を与えるという問題があった。
【０００４】
また接続している電線を外す場合にはドライバーなどの冶具を用いて行うため施工しづらいという問題があった。
【０００５】
本発明は、上記の点に鑑みて為されたもので、その目的とするところは、電線の接続完了を外部から確実に確認でき、また結線された電線を特別な冶具なしに簡単に行える端子装置を提供することにある。
【０００６】
【課題を解決するための手段】
上記目的を達成するために、請求項１の発明では、配線器具等の使用器具の器体内に内蔵されて使用される端子装置において、先端で電線の心線を弾発力で押圧鎖錠する鎖錠ばね片を有する鎖錠ばね部と、鎖錠ばね片に並行するように配置され、上記電線を鎖錠ばね片方向に押圧する押さえばね片を有する押さえばね部とからなる速結端子部を備えるとともに、
一端が回転自在に軸体に軸支されたレバーと、該レバーに一体に設けられ、上記レバーが初期位置に回転している状態で先端により上記鎖錠ばね片の先部を押圧鎖錠方向とは反対方向に押圧する端子押圧体と、上記レバーに一体に設けられ、上記鎖錠ばね片と上記押さえばね片との間に介入される上記電線の心線の先端部で押圧力を受け、上記鎖錠ばね片への上記端子押圧体による押圧を解除するよう上記端子押圧体を移動させる方向に回転させる回転力を上記レバーに与える押し受け体と、上記レバーから上記鎖錠ばね片の押圧鎖錠方向とは反対方向に一体延出され、上記レバーが初期位置にあるとき先端部を上記器体に設けた係止部に離脱自在に係止し、上記レバーが上記回転力を受けて回転しようとするときの力によって撓んで上記係止部から先部を離脱する腕体とを有し、上記レバーの他端を上記器体に設けた孔より外部に臨ませている表示・電線解除機構部を備えていることを特徴とする。
【０００７】
請求項２の発明では、請求項１の発明において、上記軸体を上記レバーに対して相対的に回転自在で且つ軸方向に移動自在に上記レバー支持させ、且つ上記軸体の一端部に上記器体の別の孔を介して外部に出没自在な接続完了表示部を設け、上記レバーには上記軸体を中心とするカム体を一体に設け、該カム体の上記軸体の他端部側面に中心部位から外縁方向に拡がった凹部を形成するとともに上記レバーが初期位置から回転力を受けて回転する方向の上記凹部の内側側面を上り傾斜面に形成し、該凹部に対応して上記軸体には凹部に嵌って上記カム体の回転により上記凹部内を回転方向に移動する突起を一体に設け、該突起が上記傾斜面に乗り上げて移動する際に上記軸体を他端部側に軸移動させることを特徴とする。
【０００８】
請求項３の発明では、請求項２の発明において、上記レバーが上記速結端子部での電線接続が完了する位置まで回転したときに上記軸体の上記突起が乗り越える段差を上記傾斜面に設けていることを特徴とする。
【０００９】
【発明の実施の形態】
以下本発明を一実施形態により説明する。
【００１０】
図２（ａ）は、本実施形態の端子装置の構成部材の全体を示しており、この図で示すように本実施形態の端子装置は速結端子部１と、電線接続状態完了を表示する機能と、電線接続を解除する機能とを備えた表示・電線解除機構部２とから構成される。
【００１１】
速結端子部１は一枚の導電性ばね材料を折り曲げて鎖錠ばね部１０と、押さえばね部１１とを一体に形成したものであって、鎖錠ばね部１０は、図１に示すおように端子装置を収納する配線器具の器体３内に固持される基片１０ａと、この基片１０ａの一端よりＵ字状に折り返して、基片１ａとは徐々に離れるように傾斜しながら基片１ａの他端側へ延長形成され、その先端で後述する電線４の心線４ａを弾発力で押圧鎖錠する鎖錠部１０ｄを形成する鎖錠ばね片１０ｂと、基片１０ａの他端より略Ｓ字状に折り曲げ形成された延長片１０ｃとで構成され、押さえばね部１１は延長片１０ｃの先端より鎖錠ばね片１０ｂの先端近傍を通って、鎖錠ばね片１０ｂと並行しながら鎖錠ばね片１０ｂの基部付近まで延長形成された押さえばね片１１ａからなり、その先部には突出方向が鎖錠ばね片１０ｂ方向になるようにく字状に折り曲げてその屈曲部により形成される押圧部１１ｂを設けている。
【００１２】
一方表示・電線解除機構部２は、合成樹脂成形品からなり、図２（ａ）（ｂ）に示すように円盤状のカム体２０を一端に設けた接続完了表示手段と解除手段とを兼ねたレバー２１と、このレバー２１の中間部からカム体２０方向に一体延出され、その先端部が速結端子部１の鎖錠ばね部１０の鎖錠ばね片１０ｂの先部を反弾発方向に押圧する端子押圧体２２と、端子押圧体２２の基部付近のレバー２１の側面より側面に直交する方向に突出し、後述する電線４の心線４ａ先端で押されることで後述する軸体２５を中心とした回転力をレバー２１に与える押し受け体２３と、上記端子押圧体２２の基部よりカム体２０方向に一体突出され、その先端をＬ字状とした撓み可能な弾性を持つ腕体２４と、カム体２０の中心に設けた挿通孔（図示せず）に挿通することにより回動自在で且つ軸方向に移動可能なように支持され、一端部に軸方向に直交する面形状が四角形の接続完了表示部２９を設けた回動軸２５とからなり、軸体２５の他端部側のカム体２０の面には図４（ｂ）に示すように中心部に円形の凹部２６を形成するとともにこの凹部２６に要側が連通した扇状の凹部２７，２７を中心部を挟んで対称的に形成し、これら凹部２７，２７に対応して軸体２５からは突起２８，２８を突出させ凹部２６と凹部２７との連通部を介して図４（ａ）に示すように先部を凹部２７に嵌め込み、軸体２５とカム体２０とが相対的に一方向に回転したときに当該回転方向側の凹部２７の側壁に形成した傾斜面２７ａに乗り上げることで軸体２５を図４（ｂ）に示すよう他端側へ軸方向に移動させることができるようなっている。尚突起２８が乗り越える段差２７ｂを電線接続完了に対応する傾斜面２７ａ上の位置に設けてある。
【００１３】
以上のように構成した速結端子部１及び表示・電線解除機構部２を組み込む配線器具の器体３は次のように構成される。
【００１４】
つまり器体３はボディ３ａとこれに被着されるカバー３ｂとからなるもので、図３（ａ）（ｂ）に示すように一側面にはレバー２１の先端を露出させる細角孔３０を開口し、この細角孔３０を開口した側面に対して直交する側面には接続完了表示部２９を出没自在に挿入する角孔３１を開口してある。
【００１５】
そして器体３の内部では、図１（ａ）に示すように上記細角孔３０を開口した側壁とは反対側の側壁に沿うように鎖錠ばね部１０の基片１０ａを配置して鎖錠ばね片１０ｂとのＵ字状の連結部位を底壁上に載置して鎖錠ばね部１０を器体３内に配設する。この場合例えば基片１０ａの側端を側方の側壁内面に形成した嵌合溝（図示せず）に嵌合して動かないように固持させることで保持するようになっている。
【００１６】
ここで器体３は鎖錠ばね部１０の鎖錠ばね片１０ｂの基部と、押さえばね部１１の押さえばね片１１ａの先端との間隙の開口部が臨む位置に対応する底壁に電線挿入孔３３を開口してあり、外部から電線挿入孔３３を介して器体３内に電線４の心線４ａを挿入すれば、上記間隙内へ導入されるようになっている。
【００１７】
一方表示・電線解除機構部２は、速結端子部１の側方に配置されるもので、器体３内部から上記細角孔３０に内側からレバー２１の先端を挿入するとともに、軸体２５の一端部に設けた接続完了表示部２９を角孔３１に挿入して外部へ図３（ａ）に示すよう突出させる。この位置は上記腕体２４のＬ字状先部２４ａが鎖錠ばね部１０の基片１０ａと延長片１０ｃとの連結部位付近に配置されるように設定されている。そして上記角孔３１を開口した側壁の基片１０ａと延長片１０ｃとの連結部位付近の内面側には上記腕体２４のＬ字状先部２４ａを係止するための係止部３４を先端に設けたリブ３２を形成しており、上記腕体２４のＬ字状先部２４ａが係止部３４に離脱自在に係止されることで、表示・電線解除機構部２はレバー２１に一体に設けた端子押圧体２２の先端を鎖錠ばね片１０ｂの先部に反弾発方向に押圧させて鎖錠ばね片１０ｂを基片１０ａ側に撓ませた初期状態に設定される。このとき腕体２４が鎖錠ばね片１０ｂの弾発力による荷重を受けて係止部３４とＬ字状先部２４ａとの係止が保持される。この初期状態では表示・解除機構部２の押し受け体２３の先部が鎖錠ばね片１０ｂの先部よりやや奥で延長片１０ｃの内角部に対応する押さえばね片１１ａ近傍付近の速結端子部１内に配置される。
【００１８】
尚図においては配線器具側の通電経路と速結端子部１との接続関係については省略しているが、配線器具がスイッチであれば、本発明端子装置が負荷或いは電源端子として用いられ、またコンセントであれば電源端子として用いられるの言うまでもなく、また配線器具に限らず機器組み込みの端子装置として用いることも勿論できる。
【００１９】
而して今図１（ａ）の初期状態から、図１（ｂ）に示すように電線４の心線４ａを電線挿入孔３３から器体３内に押入すると、電線４は押さえばね部１１の押さえばね片１１ａの押圧部１１ｂに近接しながら速結端子部１の奥部に進み、やがて心線４ａの先端が表示・電線解除機構部２の押し受け体２３に当たって、図において上向きの力を押し受け体２３に加える。
【００２０】
押し受け体２３に与えられる上向きの力は、レバー２１を図において反時計方向の回転させる力となる。ここで軸体２５は一端部の接続完了表示部２９が角孔３１に嵌合しているため回転せず、レバー２１が軸体２５を中心として回転することになる。このレバー２１の回転動作の力によって、腕体２４は撓みながらその基端部が図１（ｃ）に示す矢印方向に移動し、Ｌ字状先部２４ａが係止部３４より離脱することになる。これにより一気にレバー２１が回転し、この回転によって鎖錠ばね部１０の鎖錠ばね片１１ｂの先端を押圧していた端子押圧体２２が後退するため、鎖錠ばね片１１ｂはその弾発力により復帰して先端の鎖錠部１１ｄで電線４の心線４ａを押さえばね部１１の押さえばね片１１ａ側に押すとともに鎖錠部１１ｄのエッジで鎖錠する。このとき電線挿入孔３３に近い電線４の部位が押さえばね片１１ａの押圧部１１ｂによって鎖錠ばね片１１ｂ方向に押圧されているため上記鎖錠は確実なものとなる。
【００２１】
一方軸体２５の突起２８がカム体２０の回転によって凹部２７の傾斜面２７ａに乗り上げて傾斜面２７ａを上り、最終的には電線接続完了位置に対応して設けた段差に２７ｂを乗り越える。この段差２７ｂを突起２８が乗り越える際にカッチという音が発せされることにより施工者は電線接続が完了したことを知ることができる。
【００２２】
また図４（ａ）の状態から図４（ｂ）に示すように軸体２５は他端部側に向けて軸方向に移動する。この移動によって軸体２５の一端部に設けた接続完了表示部２９が角孔３１内に引き込まれ、接続が完了したことを表示する。またレバー２１もその先端を細角孔３０の下端位置から上端位置へ移動させることになり、この先端の位置や上記接続完了表示部２９の位置によって電線４の接続が完了したことを施工者は器体３外部から視認できることになる。
【００２３】
さて上記のように鎖錠された電線４を外す場合には、細角孔３０の上端位置へ移動しているレバー２１の先端を図５に示す矢印方向に押し下げて軸体２５を中心としてレバー２１を時計方向に回転させる。この回転によってカム体２０の凹部２７の傾斜面２７ａを軸体２５の突起２８が下るため軸体２５は一端部側に向けて軸方向に移動し、一端部の接続完了表示部２９を角孔３１から器体３外部に突出させる。またレバー２１の回転に伴って端子押圧体２２の先端が前進して鎖錠ばね部１０の鎖錠ばね片１１ｂの先部を押して基片１１ａ方向に撓ませるとともに、腕体２４のＬ字状先部２４がリブ３２の上端の係止部３４に嵌って係止され、表示・解除機構部２は初期状態に戻ることになる。これにより電線４の鎖錠状態が解除され電線４を器体３外へ抜くことができることになる。
【００２４】
尚接続完了表示部２９とカム体２０との間の軸体２５にコイルばねを装着し、このコイルばねの外向きの付勢力でレバー２１が初期位置に復帰した際、接続完了表示部２９を角孔３１から器体３外部に自動復帰させるようにしても良い。
【００２５】
【発明の効果】
請求項１の発明は、配線器具等の使用器具の器体内に内蔵されて使用される端子装置において、先端で電線の心線を弾発力で押圧鎖錠する鎖錠ばね片を有する鎖錠ばね部と、鎖錠ばね片に並行するように配置され、上記電線を鎖錠ばね片方向に押圧する押さえばね片を有する押さえばね部とからなる速結端子部を備えるとともに、
一端が回転自在に軸体に軸支されたレバーと、該レバーに一体に設けられ、上記レバーが初期位置に回転している状態で先端により上記鎖錠ばね片の先部を押圧鎖錠方向とは反対方向に押圧する端子押圧体と、上記レバーに一体に設けられ、上記鎖錠ばね片と上記押さえばね片との間に介入される上記電線の心線の先端部で押圧力を受け、上記鎖錠ばね片への上記端子押圧体による押圧を解除するよう上記端子押圧体を移動させる方向に回転させる回転力を上記レバーに与える押し受け体と、上記レバーから上記鎖錠ばね片の押圧鎖錠方向とは反対方向に一体延出され、上記レバーが初期位置にあるとき先端部を上記器体に設けた係止部に離脱自在に係止し、上記レバーが上記回転力を受けて回転しようとするときの力によって撓んで上記係止部から先部を離脱する腕体とを有し、上記レバーの他端を上記器体に設けた孔より外部に臨ませている表示・電線解除機構部を備えているので、電線の心線を速結端子部に挿入接続する際に電線の挿入力を用いて上記レバーを回転させることができ、その結果上記レバーの回転によるレバーの他端の移動により電線接続完了を器体外部から確実に視認することができ、その結果結線に関する信頼性を施工業者に与えることができ、しかも上記レバーを操作するだけで該レバーの端子押圧体により上記鎖錠ばね片を反鎖錠方向へ押圧して鎖錠状態を解除することができ、そのためドライバー等の冶具を用いることなく簡単に電線を引き外すことができ、更に初期位置では上記鎖錠ばね片を反鎖錠方向に押圧した状態を腕体の係止によって維持できるから上記鎖錠ばね片と上記押さえばね片との間への電線の心線の挿入も容易に行え、しかも表示・電線解除機構部を一つの部品として構成できるため、部品費、組立加工費の削減が図れる。
【００２６】
請求項２の発明は、請求項１の発明において、上記軸体を上記レバーに対して相対的に回転自在で且つ軸方向に移動自在に上記レバー支持させ、且つ上記軸体の一端部に上記器体の別の孔を介して外部に出没自在な接続完了表示部を設け、上記レバーには上記軸体を中心とするカム体を一体に設け、該カム体の上記軸体の他端部側面に中心部位から外縁方向に拡がった凹部を形成するとともに上記レバーが初期位置から回転力を受けて回転する方向の上記凹部の内側側面を上り傾斜面に形成し、該凹部に対応して上記軸体には凹部に嵌って上記カム体の回転により上記凹部内を回転方向に移動する突起を一体に設け、該突起が上記傾斜面に乗り上げて移動する際に上記軸体を他端部側に軸移動させるので、上記レバーの回転に連動して上記軸体を軸方向に移動させて、その軸体の一端部に設けた接続完了表示部を器体内外に出没させることができ、そのため接続完了表示部の出没状態でも電線接続完了を視認することができる。
【００２７】
請求項３の発明は、請求項２の発明において、上記レバーが上記速結端子部での電線接続が完了する位置まで回転したときに上記軸体の上記突起が乗り越える段差を上記傾斜面に設けているので、上記突起が段差に乗り上げるときに発生する音でも電線接続完了を聴覚的に確認することもできる。
【図面の簡単な説明】
【図１】本発明の実施形態の電線接続の動作説明図である。
【図２】（ａ）は同上の速結端子部と表示・電線解除機構部の斜め側方から見た斜視図である。
（ｂ）は同上の表示・電線解除機構部の斜視図である。
【図３】（ａ）は同上の電線非接続状態の外観斜視図である。
（ｂ）は同上の電線接続状態の外観斜視図である。
【図４】（ａ）は同上の電線非接続状態の表示・電線解除機構部の斜視図である。
（ｂ）は同上の電線接続状態の表示・電線解除機構部の斜視図である。
【図５】同上の電線外しの動作説明図である。
【符号の説明】
１　速結端子部
２　表示・電線解除機構部
３　器体
４　電線
４ａ　心線
１０　鎖錠ばね部
１０ｂ　鎖錠ばね片
１１　押さえばね部
１１ａ　押さえばね片
２０　カム体
２１　レバー
２２　端子押圧体
２３　押し受け体
２４　腕体
２４ａ　Ｌ字状先部
２５　軸体
３０　細角孔
３３　電線挿入孔
３４　係止部[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a terminal device.
[0002]
[Prior art]
Conventionally, a quick-connecting terminal device that can lock the core of an electric wire simply by inserting the end of the electric wire into the housing through the electric wire insertion hole from the outside of the housing containing the terminal device is conventionally used. Provided by This terminal device is widely used because a stable connection can be made without loosening the screw as compared with a terminal device using a screw terminal.
[0003]
[Problems to be solved by the invention]
However, the conventional terminal device described above has a problem in that it is unclear from the outside whether or not the wires are securely connected, so that the construction worker has a problem that the connection is uneasy.
[0004]
In addition, there is a problem that it is difficult to remove the connected electric wire because it is performed using a jig such as a screwdriver.
[0005]
SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has as its object the purpose of being able to reliably confirm the completion of connection of an electric wire from the outside, and to easily perform a connected electric wire without a special jig. It is to provide a device.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, in a terminal device which is used by being built in a body of a use tool such as a wiring tool, the core wire of an electric wire is pressed and locked by a resilient force at a tip. A quick-connecting terminal portion comprising: a locking spring portion having a locking spring piece; and a pressing spring portion having a pressing spring piece disposed parallel to the locking spring piece and pressing the electric wire in the locking spring direction. With
A lever whose one end is rotatably supported by the shaft, and which is integrally provided with the lever, and presses the tip of the locking spring piece by the tip with the tip rotating in the initial position in the locking direction. And a terminal pressing body for pressing in the opposite direction to the lever, and a pressing force is applied to a tip end of the core of the electric wire interposed between the locking spring piece and the holding spring piece. A pressing receiving body for applying a rotational force to the lever to rotate the terminal pressing body in a direction to move the terminal pressing body so as to release the pressing of the locking spring piece by the terminal pressing body; When the lever is at the initial position, the distal end portion is detachably locked to a locking portion provided on the container body, and the lever receives the rotational force when the lever is at the initial position. To bend by the force when trying to rotate Parts having an arm body to leave the tip portion from, characterized in that the other end of the lever is provided with a display and wire release mechanism which is faced to the outside from the hole provided on the instrument body.
[0007]
According to a second aspect of the present invention, in the first aspect, the shaft is supported by the lever so as to be rotatable relative to the lever and movably in the axial direction, and the shaft is attached to one end of the shaft. A connection completion display portion that can be retracted and retracted to the outside through another hole of the container body; a cam body centering on the shaft body is integrally provided on the lever; the other end of the shaft body of the cam body; A concave portion is formed on the side surface, which extends from the central portion toward the outer edge, and an inner side surface of the concave portion in a direction in which the lever rotates by receiving a rotational force from the initial position is formed as an upwardly inclined surface. The shaft body is provided integrally with a projection that fits into the recess and moves in the rotation direction in the recess by the rotation of the cam body. When the projection rides on the inclined surface and moves, the shaft body is moved to the other end side. It is characterized by being axially moved.
[0008]
According to a third aspect of the present invention, in the second aspect of the present invention, the inclined surface is provided with a step over which the projection of the shaft body rides when the lever is rotated to a position where the wire connection at the quick connection terminal portion is completed. It is characterized by having.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described with reference to an embodiment.
[0010]
FIG. 2A shows the entire components of the terminal device of the present embodiment. As shown in FIG. 2A, the terminal device of the present embodiment displays the quick connection terminal portion 1 and the completion of the wire connection state. The display / wire release mechanism 2 has a function and a function of releasing the connection of the electric wire.
[0011]
The quick-connecting terminal portion 1 is formed by bending a single conductive spring material to integrally form a lock spring portion 10 and a holding spring portion 11, and the lock spring portion 10 is formed as shown in FIG. 10a firmly held in the body 3 of the wiring device for housing the terminal device as described above, and folded in a U-shape from one end of the base 10a, while the base 1a is inclined so as to gradually separate therefrom. A locking spring piece 10b extending to the other end side of the base piece 1a and forming a locking portion 10d at its distal end to press and lock a core wire 4a of the electric wire 4 by resilient force; An extension piece 10c bent substantially in an S-shape from the other end is formed, and the pressing spring portion 11 passes near the tip of the locking spring piece 10b from the tip of the extension piece 10c and is parallel to the locking spring piece 10b. Pressing spring piece 11 extended to near the base of locking spring piece 10b From it, its previously portion is provided with a pressing portion 11b which is formed by the bent part by bending as difficulty-shape projecting direction is locking spring pieces 10b direction.
[0012]
On the other hand, the display / electric wire release mechanism 2 is made of a synthetic resin molded product, and serves as a connection completion display means provided with a disc-shaped cam body 20 at one end as shown in FIGS. The lever 21 and the intermediate portion of the lever 21 are integrally extended in the direction of the cam body 20, and the tip of the lever 21 repels the tip of the locking spring piece 10 b of the locking spring portion 10 of the quick-connecting terminal 1. A terminal pressing body 22 which presses in a direction, and a shaft body 25 which projects from a side surface of the lever 21 near the base of the terminal pressing body 22 in a direction orthogonal to the side surface and which is pushed by a distal end of a core 4a of the electric wire 4 which will be described later. And a push-receiving member 23 for applying a rotational force to the lever 21 with the center as a center, and an arm member which is integrally protruded from the base of the terminal pressing member 22 in the direction of the cam body 20 and has an L-shaped tip and has flexible elasticity. 24 and an insertion hole (not shown) provided at the center of the cam body 20. And a rotation shaft 25 provided with a connection completion display portion 29 having a square shape at one end, the surface shape of which is orthogonal to the axial direction. As shown in FIG. 4B, a circular recess 26 is formed in the center of the surface of the cam body 20 on the other end side of the shaft body 25, and fan-shaped recesses 27, 27 whose main sides communicate with the recess 26. Are formed symmetrically with respect to the central portion, and projections 28, 28 are projected from the shaft body 25 in correspondence with the concave portions 27, 27, and through the communicating portion between the concave portions 26 and the concave portion 27, FIG. As shown in FIG. 7, the tip portion is fitted into the concave portion 27, and when the shaft body 25 and the cam body 20 rotate relatively in one direction, the tip portion rides on the inclined surface 27a formed on the side wall of the concave portion 27 on the rotation direction side. The shaft body 25 is axially moved to the other end side as shown in FIG. It has been to allow Rukoto. A step 27b over which the projection 28 rides is provided at a position on the inclined surface 27a corresponding to the completion of the electric wire connection.
[0013]
The wiring device body 3 incorporating the quick connection terminal portion 1 and the display / wire release mechanism 2 configured as described above is configured as follows.
[0014]
That is, the body 3 is composed of a body 3a and a cover 3b attached to the body 3a. As shown in FIGS. 3 (a) and 3 (b), a small square hole 30 for exposing the tip of the lever 21 is provided on one side. On the side surface orthogonal to the side surface on which the narrow square hole 30 is opened, a square hole 31 into which the connection completion display unit 29 is inserted so as to be able to protrude and retract is formed.
[0015]
1A, the base piece 10a of the locking spring portion 10 is arranged along the side wall opposite to the side wall where the narrow hole 30 is opened as shown in FIG. The U-shaped connection portion with the lock spring piece 10b is placed on the bottom wall, and the lock spring portion 10 is disposed in the body 3. In this case, for example, the side end of the base piece 10a is fitted and held in a fitting groove (not shown) formed in the inner surface of the side wall so as not to move.
[0016]
Here, the body 3 is provided with an electric wire insertion hole in a bottom wall corresponding to a position where an opening of a gap between the base of the locking spring piece 10b of the locking spring portion 10 and the tip of the pressing spring piece 11a of the pressing spring portion 11 faces. An opening 33 is provided, and when the core 4a of the electric wire 4 is inserted into the case 3 from outside through the electric wire insertion hole 33, the electric wire 4 is introduced into the gap.
[0017]
On the other hand, the display / wire release mechanism 2 is disposed on the side of the quick-connecting terminal 1. The tip of the lever 21 is inserted into the narrow hole 30 from the inside of the housing 3 and the shaft 25 Is inserted into the square hole 31 and protrudes outside as shown in FIG. 3A. This position is set such that the L-shaped tip portion 24a of the arm body 24 is disposed near the connecting portion between the base piece 10a and the extension piece 10c of the locking spring portion 10. A locking portion 34 for locking the L-shaped tip portion 24a of the arm body 24 is provided on the inner surface near the connecting portion between the base piece 10a and the extension piece 10c of the side wall with the square hole 31 opened. Is formed, and the display / wire release mechanism 2 is integrated with the lever 21 by the L-shaped tip 24 a of the arm 24 being detachably locked by the locking portion 34. Is set in an initial state in which the tip of the terminal pressing body 22 provided in the above is pressed against the tip of the locking spring piece 10b in the repulsive direction to bend the locking spring piece 10b toward the base piece 10a. At this time, the arm 24 receives the load due to the resilient force of the locking spring piece 10b, so that the locking between the locking portion 34 and the L-shaped tip 24a is maintained. In this initial state, the front end of the pressing member 23 of the display / release mechanism 2 is slightly deeper than the front end of the locking spring piece 10b, and the quick-connecting terminal near the pressing spring piece 11a corresponding to the inner corner of the extension piece 10c. It is arranged in the unit 1.
[0018]
Although the connection relationship between the current path on the wiring device side and the quick connection terminal portion 1 is omitted in the figure, if the wiring device is a switch, the terminal device of the present invention is used as a load or a power supply terminal. It is needless to say that an outlet can be used as a power supply terminal, and it can be used not only as a wiring device but also as a terminal device incorporated in a device.
[0019]
When the core 4a of the electric wire 4 is pushed into the housing 3 from the electric wire insertion hole 33 as shown in FIG. 1B from the initial state of FIG. Of the presser spring piece 11a, moves toward the back of the quick-connecting terminal 1 while approaching the pressing portion 11b of the pressing spring piece 11a. Is added to the pressing body 23.
[0020]
The upward force applied to the pressing body 23 is a force for rotating the lever 21 counterclockwise in the drawing. Here, the shaft body 25 does not rotate because the connection completion display portion 29 at one end is fitted in the square hole 31, and the lever 21 rotates about the shaft body 25. The base of the arm 24 moves in the direction of the arrow shown in FIG. 1C while bending the arm 24 by the force of the rotation of the lever 21, and the L-shaped tip 24 a is detached from the locking portion 34. Become. As a result, the lever 21 rotates at a stretch, and the terminal pressing body 22 that has pressed the tip of the locking spring piece 11b of the locking spring portion 10 retreats by this rotation, so that the locking spring piece 11b is caused by its elastic force. Then, the core wire 4a of the electric wire 4 is pushed toward the holding spring piece 11a side of the holding spring part 11 by the locking part 11d at the tip, and is locked at the edge of the locking part 11d. At this time, since the portion of the electric wire 4 close to the electric wire insertion hole 33 is pressed in the direction of the locking spring piece 11b by the pressing portion 11b of the pressing spring piece 11a, the above-described locking is secure.
[0021]
On the other hand, the projection 28 of the shaft body 25 rides on the inclined surface 27a of the concave portion 27 by the rotation of the cam body 20, climbs the inclined surface 27a, and finally climbs over the step 27b provided corresponding to the wire connection completion position. When the projection 28 gets over the step 27b, a click sound is emitted, so that the installer can know that the electric wire connection is completed.
[0022]
4A, the shaft body 25 moves in the axial direction toward the other end as shown in FIG. 4B. Due to this movement, the connection completion display section 29 provided at one end of the shaft body 25 is drawn into the square hole 31 to indicate that the connection has been completed. Also, the tip of the lever 21 is moved from the lower end position of the narrow hole 30 to the upper end position, and the installer confirms that the connection of the electric wire 4 has been completed by the position of this end and the position of the connection completion display section 29. It can be visually recognized from the outside of the container 3.
[0023]
In order to remove the locked electric wire 4 as described above, the tip of the lever 21 moving to the upper end position of the narrow hole 30 is pushed down in the direction of the arrow shown in FIG. 21 is rotated clockwise. Due to this rotation, the projection 28 of the shaft body 25 moves down the inclined surface 27 a of the concave portion 27 of the cam body 20, so that the shaft body 25 moves in the axial direction toward one end side, and the connection completion display section 29 at one end is squared. It is made to protrude from 31 to the exterior of body 3. Further, with the rotation of the lever 21, the distal end of the terminal pressing body 22 advances to push the front end of the locking spring piece 11 b of the locking spring part 10 to bend in the direction of the base piece 11 a, and to make the L-shaped arm 24. The tip portion 24 is fitted and locked in the locking portion 34 at the upper end of the rib 32, and the display / release mechanism 2 returns to the initial state. Thereby, the locked state of the electric wire 4 is released, and the electric wire 4 can be pulled out of the body 3.
[0024]
A coil spring is mounted on the shaft 25 between the connection completion display portion 29 and the cam body 20. When the lever 21 returns to the initial position by the outward biasing force of the coil spring, the connection completion display portion 29 is displayed. You may make it return automatically to the exterior of the body 3 from the square hole 31.
[0025]
【The invention's effect】
According to the first aspect of the present invention, there is provided a terminal device which is used by being incorporated in a body of a use tool such as a wiring tool, the lock device having a lock spring piece which presses and locks a core of an electric wire with a resilient force at a distal end. A quick-connecting terminal portion comprising a spring portion and a pressing spring portion having a pressing spring portion disposed in parallel with the locking spring piece and pressing the electric wire in the locking spring piece direction,
A lever whose one end is rotatably supported by the shaft, and which is integrally provided with the lever, and presses the tip of the locking spring piece by the tip with the tip rotating in the initial position in the locking direction. And a terminal pressing body for pressing in the opposite direction to the lever, and a pressing force is applied to a tip end of the core of the electric wire interposed between the locking spring piece and the holding spring piece. A pressing receiving body for applying a rotational force to the lever to rotate the terminal pressing body in a direction to move the terminal pressing body so as to release the pressing of the locking spring piece by the terminal pressing body; When the lever is at the initial position, the distal end portion is detachably locked to a locking portion provided on the container body, and the lever receives the rotational force when the lever is at the initial position. To bend by the force when trying to rotate And an arm body for detaching the front end from the part, and a display / wire release mechanism that exposes the other end of the lever to the outside through a hole provided in the container body. The lever can be rotated using the insertion force of the wire when the wire is inserted and connected to the quick connection terminal portion. As a result, the completion of the wire connection is ensured from outside the body by the movement of the other end of the lever due to the rotation of the lever. Can be visually recognized, and as a result, the reliability regarding the connection can be given to the contractor. In addition, only by operating the lever, the locking spring piece is pressed in the anti-locking direction by the terminal pressing body of the lever. The locked state can be released, so that the electric wire can be easily pulled off without using a jig such as a screwdriver. Maintained by locking Since the core wire of the electric wire can be easily inserted between the lock spring piece and the holding spring piece, and the display / wire release mechanism can be configured as one part, the parts cost and the assembly processing cost can be increased. Can be reduced.
[0026]
According to a second aspect of the present invention, in the first aspect, the shaft body is supported by the lever so as to be rotatable relative to the lever and movably in the axial direction, and the one end of the shaft body is provided with the shaft. A connection completion display portion that can be retracted and retracted to the outside through another hole of the container body; a cam body centering on the shaft body is integrally provided on the lever; the other end of the shaft body of the cam body; A concave portion is formed on the side surface, which extends from the central portion toward the outer edge, and an inner side surface of the concave portion in a direction in which the lever rotates by receiving a rotational force from the initial position is formed as an upwardly inclined surface. The shaft body is provided integrally with a projection that fits into the recess and moves in the rotation direction in the recess by the rotation of the cam body. When the projection rides on the inclined surface and moves, the shaft body is moved to the other end side. The shaft is moved in Can be moved in the axial direction so that the connection completion display portion provided at one end of the shaft body can be made to protrude and retract into and out of the body. Therefore, even when the connection completion display portion protrudes and disappears, the completion of the wire connection can be visually recognized. .
[0027]
According to a third aspect of the present invention, in the second aspect of the present invention, the inclined surface is provided with a step over which the projection of the shaft body rides when the lever is rotated to a position where the electric wire connection at the quick connection terminal portion is completed. Therefore, the completion of the electric wire connection can also be confirmed audibly by the sound generated when the projection climbs over the step.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of an operation of electric wire connection according to an embodiment of the present invention.
FIG. 2A is a perspective view of the quick-connecting terminal and a display / wire release mechanism as viewed from an oblique side.
(B) is a perspective view of the display / wire release mechanism of the above.
FIG. 3 (a) is an external perspective view of the same electric wire disconnected state.
(B) is an external appearance perspective view of the same electric wire connection state.
FIG. 4 (a) is a perspective view of a display / wire release mechanism of the above-mentioned wire disconnected state.
(B) is a perspective view of a display / electric wire release mechanism of the same electric wire connection state.
FIG. 5 is an explanatory diagram of an operation of removing the electric wire according to the first embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Quick connection terminal part 2 Display and electric wire release mechanism part 3 Body 4 Electric wire 4a Core wire 10 Locking spring part 10b Locking spring piece 11 Pressing spring part 11a Pressing spring piece 20 Cam body 21 Lever 22 Terminal pressing body 23 Press receiving Body 24 Arm 24a L-shaped tip 25 Shaft 30 Small square hole 33 Wire insertion hole 34 Locking part

Claims

In a terminal device used by being built in a body of a use tool such as a wiring tool, a lock spring portion having a lock spring piece that presses and locks a core wire of an electric wire with a resilient force at a tip thereof, and a lock spring. A quick-connecting terminal portion comprising a presser spring portion having a presser spring piece that is disposed so as to be parallel to the piece and presses the electric wire in one direction of the lock spring,
A lever whose one end is rotatably supported by the shaft, and which is integrally provided with the lever, and presses the tip of the locking spring piece by the tip with the tip rotating in the initial position in the locking direction. And a terminal pressing body for pressing in the opposite direction to the lever, and a pressing force is applied to a tip end of the core of the electric wire interposed between the locking spring piece and the holding spring piece. A pressing receiving body for applying a rotational force to the lever to rotate the terminal pressing body in a direction to move the terminal pressing body so as to release the pressing of the locking spring piece by the terminal pressing body; The lever is integrally extended in a direction opposite to the pressing and locking direction, and when the lever is at the initial position, the distal end portion is detachably locked to a locking portion provided on the container, and the lever receives the rotational force. To bend by the force when trying to rotate A terminal having an arm body for detaching the front end from the portion, and a display / wire release mechanism for exposing the other end of the lever to the outside through a hole provided in the body. apparatus.

The shaft is rotatably supported relative to the lever, and is supported by the lever so as to be movable in the axial direction. The shaft can be freely protruded and retracted to the outside through another hole of the container at one end of the shaft. A connection completion display portion is provided, a cam body having the shaft as a center is integrally provided on the lever, and a concave portion extending from a center portion to an outer edge direction is formed on a side surface of the other end portion of the shaft body of the cam body. The inner side surface of the concave portion in the direction in which the lever rotates by receiving the rotational force from the initial position is formed as an upwardly inclined surface, and the shaft body is fitted into the concave portion corresponding to the concave portion and the cam body is rotated. 2. The projection according to claim 1, wherein a projection that moves in the rotation direction in the recess is provided integrally, and when the projection runs on the inclined surface and moves, the shaft body is axially moved to the other end. Terminal device.

3. The terminal device according to claim 2, wherein a step over which the protrusion of the shaft body rides when the lever is rotated to a position where the electric wire connection at the quick connection terminal portion is completed is provided on the inclined surface. .