JP2004032888A

JP2004032888A - Plate for wiring appliance

Info

Publication number: JP2004032888A
Application number: JP2002184893A
Authority: JP
Inventors: Tomoaki Sasaki; 佐々木　知明; Tetsuyasu Kawamoto; 川本　哲靖; Katsuya Imai; 今井　克哉; Naoki Kanemoto; 金本　直樹
Original assignee: Matsushita Electric Works Ltd
Current assignee: Panasonic Electric Works Co Ltd
Priority date: 2002-06-25
Filing date: 2002-06-25
Publication date: 2004-01-29
Anticipated expiration: 2022-06-25
Also published as: SA03240202B1; JP3832391B2

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the falling off of a wiring appliance by arranging a plate so that the lock with a locking claw may not be released when a box screw is fastened. <P>SOLUTION: A flexible piece 8, which has an locking step 9b with which the locking claw 62 of wiring fittings C is to be locked, is provided flexibly between a pair of bridging pieces 8 provided at the lower piece 3b of the main body 1 of a plate. Therefore, the deformation of the plate frame lA caused by the fastening of the box screw 40 becomes difficult to reach the flexible piece 9 which is apart from the section of the periphery of the the box screw insertion hole 6b, being provided between the bridging pieces 8. As a result, it can suppress the spread of the interval between a locking groove 4 and the locking steps 9b of the flexible piece 9, so even in case that oblique force is added to the wiring appliance C, etc., it keeps the lock between the locking claw 62 and the wiring appliance 9b thereby enabling the falling off of the wiring appliance C from the plate frame A. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、壁面等の造営面に設けた埋込孔に配線器具を配設するための配線器具用プレートに関するものである。
【０００２】
【従来の技術】
従来、図１６〜図１８に示すように壁面等の造営面Ｗに埋込ボックス（スイッチボックス）４１を埋設し、コンセント等の配線器具Ｃが着脱自在に取り付けられるプレート枠Ａ’をボックスねじ４０によって埋込ボックス４１に取り付け、さらにプレート枠Ａ’の前面に化粧プレートＢ’を取着することで配線器具Ｃを壁等に見栄え良く埋込配設するようにした配線器具用プレートが提供されている。
【０００３】
プレート枠Ａ’を構成するプレート枠本体１は、図１６及び図１７に示すように四隅にアールを付けた略矩形枠状の合成樹脂成型品からなり、その中央部にはコンセントやスイッチ等の配線器具Ｃの器体６０の機能面（スイッチの操作体が設けられた面やコンセントの差込み口が設けられた面）を前面側へ露出させるために矩形の開口部２が設けてある。開口部２の下方に位置するプレート枠本体１の側片（以下、「下側片」と呼ぶ。）３ｂには配線器具Ｃの係止爪６２の一方が挿入係止される係止溝５０ａを具備した撓み可能な撓み片５０が設けられ、開口部２の上方に位置する側片（以下、「上側片」と呼ぶ。）３ａには配線器具Ｃの他方の係止爪６２が挿入係止される係止溝４が設けられている。
【０００４】
プレート枠本体１の下側片３ｂは、内側部位５１と外側部位５２とが隙間５３を介して平行に一体に形成されていて、この両部位５１，５２の間の隙間５３の奥端で両端を開口部２の左右両側に位置する両側片３ｃ，３ｄと一体に連結して可撓性を有する上記撓み片５０が形成してある。また外側部位５２には長孔状の溝５４が形成されており、溝５４の内側の部分を薄肉とすることで撓み片５０を横方向に撓み易くしている。
【０００５】
また、プレート枠本体１の開口部２を囲む４つの側片３ａ〜３ｄには各々凹所５が形成してあり、各凹所５にはプレート枠Ａ’を埋込ボックス４１に取り付けるためのボックスねじ４０を挿通する長孔状のボックスねじ挿通孔６ａ〜６ｄが設けてある。すなわち、開口部２を挟んで対向する上下側片３ａ，３ｂあるいは左右側片３ｃ，３ｄの凹所５に設けられたボックスねじ挿通孔６ａ〜６ｄに挿通したボックスねじ４０を埋込ボックス４１の舌片４１ａに形成されているねじ孔に螺合して締め付けることによってプレート枠Ａ’を埋込ボックス４１に取り付け、さらにプレート枠Ａ’の前面に化粧プレートＢ’を取着することで配線器具Ｃを壁等に見栄え良く埋込配設することができる。
【０００６】
【発明が解決しようとする課題】
ところで上記従来例においては、プレート枠Ａ’を埋込ボックスに取り付けるためにボックスねじ挿通孔６ａ〜６ｄに挿通したボックスねじ４０を締め付けたとき、図１８に示すように、そのボックスねじ挿通孔６ａ〜６ｄが設けられている上下側片３ａ，３ｂ（あるいは左右側片３ｃ，３ｄ）が後方に反る形で変形し、ボックスねじ４０の締め付けに起因したプレート枠Ａ’の変形が係止溝４や撓み片５０にまで及び、係止溝４と撓み片５０の係止溝５０ａとの間隔が拡がって係止爪６１と係止溝４，５０ａとの係止が外れ易くなる場合があった。そして、このような状況下で配線器具Ｃに斜め向きの力が加えられると、係止爪６１と係止溝４，５０ａとの係止が外れて配線器具Ｃがプレート枠から脱落してしまう虞があった。特に配線器具Ｃがコンセントの場合には壁面の低い位置に施工されることが多いから、斜め上方からプラグ７０が差し込まれ、上述のような斜め向きの力が加えられる可能性が高いものである（図１８参照）。
【０００７】
本発明は上記事情に鑑みて為されたものであり、その目的は、ボックスねじを締め付けたときに係止爪との係止が外れないようにして配線器具の脱落を防止した配線器具用プレートを提供することにある。
【０００８】
【課題を解決するための手段】
請求項１の発明は、上記目的を達成するために、埋込型の配線器具の機能面を露出させる開口部を有するとともに開口部を挟んで対向する両部位に配線器具を取り付けるための取付手段を具備して造営面に設けられた埋込孔の開口面側を覆う合成樹脂製のプレート枠と、配線器具の機能面を露出させる開口窓を有するとともにプレート枠に取着されてプレート枠の前面を覆う化粧プレートとを備え、埋込孔内に配設される埋込ボックスにプレート枠を取り付けるためのボックスねじが挿通されるボックスねじ挿通孔をプレート枠の開口部を挟んで対向する部位に設け、プレート枠の開口部の周縁に設けられて配線器具の一方の側面に突出した係止爪を係止する係止溝と、係止溝に対向するプレート枠の開口部の周縁より後方へ突設された一対の橋絡片と、配線器具の他方の側面に突出した係止爪を係止する係止段部を有し一対の橋絡片間に撓み自在に設けられる撓み片と、プレート枠に設けられ撓み片をプレート枠の前面側から操作するための操作窓とで少なくとも一方の取付手段を構成したことを特徴とする。
【０００９】
請求項２の発明は、請求項１の発明において、プレート枠の撓み片を挟んで操作窓と対向する部位に貫通溝を形成し、この貫通溝を通して撓み片に当接することで撓み片の撓みを規制する規制リブを化粧プレートの背面側に突設したことを特徴とする。
【００１０】
請求項３の発明は、請求項２の発明において、化粧プレートの背面側に化粧プレートの前後方向に延びる突片を突設し、突片が挿通される挿通孔をプレート枠の前面に形成し、挿通孔の周縁に突出する受け部に係止する複数の爪を、突片の先端部に化粧プレートの前後方向に沿って列設するとともに、何れの爪が受け部に係止した状態においても撓み片に当接し得る寸法に規制リブを形成したことを特徴とする。
【００１１】
請求項４の発明は、請求項２又は３の発明において、プレート枠の背面側から貫通溝に挿通された規制リブを逃がす逃がし部を撓み片に設けたことを特徴とする。
【００１２】
請求項５の発明は、請求項１〜４の何れかの発明において、両方の取付手段を、係止溝、一対の橋絡片、撓み片、並びに操作窓で構成したことを特徴とする。
【００１３】
【発明の実施の形態】
以下、図面を参照して本発明の実施形態を詳細に説明する。但し、本実施形態の基本的な構成は従来例と共通であるから、共通の構成要素には同一の符号を付して適宜説明を省略する。
【００１４】
図１に示すように、本実施形態の配線器具用プレートはプレート枠Ａと化粧プレートＢとで構成される。図２に示すように、プレート枠Ａのプレート枠本体１は従来例と同様に四隅にアールを付けた略矩形枠状の合成樹脂成型品からなり、中央部に配線器具Ｃの機能面を前面側へ露出する矩形の開口部２が設けてある。そして、開口部２の上下左右に位置する４つの側片３ａ〜３ｄの中央にはそれぞれ凹所５が設けられ、各凹所５内に長孔状のボックスねじ挿通孔６ａ〜６ｄがそれぞれ貫設されている。
【００１５】
上側片３ａには、開口部２に臨む側方及び前方に開放されて配線器具Ｃの係止爪６２の一方が挿入係止される一対の係止溝４が設けられている。また、上側片３ａの背面におけるボックスねじ挿通孔６ａと開口部２の間には、左右方向に延びた帯状の補強リブ７ａが後方に向けて突設されており、この補強リブ７ａで上側片３ａを補強している。なお、一対の係止溝４は補強リブ７ａの開口部２に臨む側面と上側片３ａの背面に跨って設けられている。
【００１６】
一方、下側片３ｂの背面におけるボックスねじ挿通孔６ｂと開口部２の間に、略三角形状の一対の架橋片８が後方に向けて突設されるとともに一対の架橋片８間に略凸字形の撓み片９が撓み自在に形成されている。なお、この撓み片９は、下側片３ｂの背面におけるボックスねじ挿通孔６ｂと開口部２の間に後方に向けて突設された帯状の補強リブ７ｂと連続一体に形成されている。
【００１７】
撓み片９の中央突部９ａの両側には、配線器具Ｃの他方の係止爪６２が挿入係止される係止段部９ｂがそれぞれ設けてある。また下側片３ｂの撓み片９と対向する部位には、撓み片９を前面側に露出させる平面視略矩形の操作窓１０が前後方向に貫設されている。さらに、中央突部９ａと対向する操作窓１０の内周面中央には、中央突部９ａに向けて突出する突部１０ａが形成されている。
【００１８】
一方、左側片３ｃ並びに右側片３ｄの背面におけるボックスねじ挿通孔６ｃ，６ｄと開口部２の間には、それぞれ後方に向けて突出する帯状の補強リブ７ｃ，７ｄが上側片３ａ及び下側片３ｂの補強リブ７ａ，７ｂと連続一体に形成されている。また、プレート枠本体１の四隅には、化粧プレートＢのプレート本体３０から後方へ突設されている突片３３が挿入される挿通孔１１が設けてある。
【００１９】
ここで、プレート枠本体１への配線器具Ｃの着脱操作について説明する。まず配線器具Ｃをプレート枠本体１に取り付けるには、配線器具Ｃの一方の係止爪６２を上側片３ａの係止溝４にそれぞれ挿入係止し、配線器具Ｃの他方の係止爪６２を、撓み片９を外側に撓ませながら前方へ押接し、係止爪６２が係止段部９ｂを乗り越えて係止した位置で、配線器具Ｃがプレート枠本体１に取り付けられることになる。また、配線器具Ｃをプレート枠本体１から取り外す場合には、図４に示すように撓み片９の中央突部９ａと操作窓１０の突部１０ａの間に前方よりドライバ等の工具Ｄの先端を挿入してこじることにより、撓み片９を外側へ撓ませて係止段部９ｂと係止爪６２との係止を外せばよい。
【００２０】
一方、化粧プレートＢのプレート本体３０は、図３に示すように絶縁性を有する合成樹脂により、プレート枠Ａの前面を覆う矩形の主部３１と、主部３１の全周縁から背面側に突出する側壁３２とを一体に形成した略箱形としてある。上記突片３３は主部３１の背面側の四隅に突設してある。また主部３１の略中央には、プレート枠Ａに取り付けた配線器具Ｃの機能面を露出する開口窓３１ａが設けてある。
【００２１】
プレート本体３０下側の側壁３２には一対の切欠部３４が設けてあり、この切欠部３４に治具（ドライバの先端等）を差し込んでプレート本体３０に前面側への力を加えることにより、プレート本体３０の突片３３に設けた爪３３ａとプレート枠本体１の挿通孔１１の受け部１１ａとの係合を解除し、化粧プレートＢをプレート枠Ａから取り外すことができるようにしてある。ここで、プレート枠本体１の下側片３ｂの切欠部３４に対応する位置には内側へ窪んだ逃がし部１６が設けてあり、切欠部３４に差し込まれた治具を逃がすことで奥まで挿入でき、化粧プレートＢを取り外す際に力が加え易くしてある。さらに、逃がし部１６の背面側端部からは薄肉のリブ１７が、化粧プレートＢの切欠部３４から突出しない程度まで延設してある（図２参照）。すなわち、切欠部３４に差し込んだ治具に造営面に当接する部分を支点として力を加えることで造営面に傷が付く虞があるが、リブ１７を設けることで切欠部３４に差し込んだ治具がリブ１７に当接することになり、化粧プレートＢをプレート枠Ａから取り外す際に治具によって造営面に傷が付くのを防ぐことができる。
【００２２】
またプレート本体３０の背面側には、図３（ｃ）に示すように規制リブ３５が開口窓３１ａの下辺と平行に後方へ突設されている。この規制リブ３５は、化粧プレートＢがプレート枠Ａに取着されたときに、プレート枠本体１の操作窓１０よりも外側にあり且つ操作窓１０と連通した貫通溝１４に挿通されて下方より撓み片９に当接し、プレート枠Ａの撓み片９の動き（撓み）を規制するものである（図５参照）。
【００２３】
なお、プレート枠本体１の上側片３ａにおけるボックスねじ挿通孔６ａの側方に長円形の貫通孔１８が設けてあり、この貫通孔１８に嵌合する嵌合突起３６がプレート本体３０の主部３１の背面に突設されている。すなわち、化粧プレートＢは嵌合突起３６が貫通孔１８に嵌合される向きにのみプレート枠Ａに取り付けることができ、プレート枠Ａに対して化粧プレートＢが誤った向きに取り付けられるのを防止している。
【００２４】
而して、従来例で説明したように埋込ボックス４１にプレート枠Ａを取り付けるために上側片３ａ及び下側片３ｂのボックスねじ挿通孔６ａ，６ｂに挿通したボックスねじ４０を締め付けると、ボックスねじ挿通孔６ａ，６ｂ周辺の部位が後方へ反る形で多少変形してしまう。従来例においては、下側片３ｂを形成する内側部位５１と外側部位５２とが隙間５３の奥端で両端を開口部２の左右側片３ｃ，３ｄと一体に連結することで撓み片５０が形成されているため、ボックスねじ４０の締め付けに起因したプレート枠Ａの変形が両部位５１，５２にまで及び易くなっていた。これに対して本実施形態では、配線器具Ｃの係止爪６２が係止する係止段部９ｂを具備した撓み片９を、プレート枠本体１の下側片３ｂに設けられた一対の架橋片８間に撓み自在に形成しているので、ボックスねじ４０の締め付けに起因した上記プレート枠Ａの変形が、架橋片８間に設けられてボックスねじ挿通孔６ｂ周辺の部位から離間されている撓み片９にまでは及び難くなる。その結果、係止溝４と撓み片９の係止段部９ｂの間隔の拡がりを抑えることができるから、配線器具Ｃに斜め向きの力が加えられた場合等でも係止爪６２と係止段部９ｂとの係止が外れないようにして配線器具Ｃのプレート枠Ａからの脱落を防止することができる。
【００２５】
ところで従来例においても、図１７及び図１９に示すようにプレート枠本体１の外側部位５２に設けた溝５４に挿入されて撓み片５０の動きを規制する規制リブ５５が化粧プレートＢ’の背面に突設されていた。しかしながら、図２０及び図２１に示すように化粧プレートＢ’をプレート枠Ａ’に取り付けたときに、従来例における規制リブ５５と撓み片５０との間に隙間ｇが空くようになっていたため、配線器具Ｃに斜め方向（図２１に矢印で示す方向）の力が加えられたときに撓み片５０が隙間ｇの方へ撓んでしまい、配線器具Ｃの係止爪６２と撓み片５０の係止溝５０ａとの係止が外れてしまう虞があった。
【００２６】
これに対して本実施形態では、既に説明したように化粧プレートＢがプレート枠Ａに取着されたとき、図６及び図７に示すように化粧プレートＢのプレート本体３０の背面に突設されている規制リブ３５をプレート枠本体１の貫通溝１４を通して撓み片９に当接させているので、上述のように配線器具Ｃに斜め方向の力が加えられたときでも撓み片９が撓むことがなく、配線器具Ｃの係止爪６２と撓み片９の係止段部９ｂとの係止をさらに外れ難くできるものである。
【００２７】
ところで、一般に住宅等の建物の内壁には壁紙（クロス）を貼ることが多く、配線器具Ｃを壁面に埋込配設するためには壁面に設けられる埋込孔の部分で壁紙を切り取って孔を開ける必要があるが、この孔開け作業において、埋込孔を塞ぐ壁紙をきれいに切り取ることができずに残った壁紙が埋込孔の周りにはみ出す場合がある。通常、壁紙のはみ出した部分はプレート枠Ａと壁面との間に挟み込んでしまうのであるが、施工の都合上からプレート枠Ａを埋込ボックス４１に取り付けて壁面に配設した後から壁紙を貼る作業（クロス貼作業）を行う場合、上記壁紙のはみ出し部分をプレート枠Ａと壁面との間に挟み込むことができず、化粧プレートＢと壁面との間に壁紙が挟み込まれてしまうことがある。従来の配線器具用プレートでは、図２０に示すように化粧プレートＢ’の背面側に突設した突片３３の先端に爪３３ａを設け、プレート枠Ａ’の挿通孔１１に挿通した突片３３の爪３３ａを挿通孔１１の周縁に形成した受け部１１ａに凹凸係合させることで突片３３の抜け止めを行って化粧プレートＢ’をプレート枠Ａ’に取り付けていたが、上記爪３３ａを受け部１１ａに係止した状態でプレート枠Ａ’の背面と化粧プレートＢ’の側壁３２の背面とがほぼ面一となるように突片３３の長さ寸法が設定されていると、化粧プレートＢ’と壁面との間に挟み込まれた壁紙のはみ出し部分の厚みによって化粧プレートＢ’の爪３３ａがプレート枠Ａ’の受け部１１ａに係止できなくなる虞があった。
【００２８】
これに対して本実施形態では、図８に示すように化粧プレートＢの突片３３の先端部に前後方向に沿って２つの爪３３ａ，３３ｂを列設し、何れかの爪３３ａ，３３ｂをプレート枠本体１の受け部１１ａに係止することでプレート枠Ａに化粧プレートＢを取り付けることができるようにしている。ここで、説明を簡単にするために突片３３の先端に近い方を第一の爪３３ａ、他方を第二の爪３３ｂと呼ぶことにする。
【００２９】
図６に示すように壁面と化粧プレートＢとの間に壁紙を挟み込んでいない状態では、突片３３の第二の爪３３ｂを挿通孔１１の受け部１１ａに係止して突片３３を抜け止めし、図８に示すように壁面と化粧プレートＢとの間に壁紙Ｋを挟み込んだ状態においては、突片３３の第一の爪３３ａを受け部１１ａに係止して抜け止めすることにより、化粧プレートＢを確実にプレート枠Ａに取り付けることができる。ここで、突片３３の第二の爪３３ｂが受け部１１ａに係止している場合では化粧プレートＢがプレート枠Ａから若干浮いた状態となるが、この場合でも化粧プレートＢの規制リブ３５がプレート枠Ａの撓み片９に当接するように規制リブ３５の寸法を設定している（図８及び図９参照）。
【００３０】
ところで本実施形態においては、図１０に示すようにプレート枠Ａの背面側から貫通溝１４に挿通された規制リブ３５を逃がす逃がし部９ｃが撓み片９に設けてある。つまり、プレート枠Ａ及び化粧プレートＢは工場から出荷されてから実際に使用されるまでの間は袋などの包装材で包装されるのが一般的であるが、プレート枠Ａの前面に化粧プレートＢを取り付けた状態で包装すると、プレート枠Ａの背面側に補強リブ７ａ〜７ｄ等が突出するために包装材に引っ掛かって包装作業が行い難くなったり、あるいは包装材が傷ついたり破れたりする虞がある。そこで、撓み片９に設けた逃がし部９ｃで規制リブ３５を逃げることにより、図１１及び図１２に示すようにプレート枠Ａを前後逆にして化粧プレートＢ内に収納することができ、このような状態ではプレート枠Ａ及び化粧プレートＢの前面あるいは側面のみが外側に露出することになり、外側への出っ張りを少なくすることができるので、包装材で包装する際の包装作業が容易になるとともに袋などの包装材が傷ついたり破れたりするのを防ぐことができる。
【００３１】
また、図１３に示すようにプレート枠本体１の上側片３ａにも架橋片８及び撓み片９、操作窓１０を設けて上下両側片３ａ，３ｂの取付手段を同一構成としても構わない。このように上下両側片３ａ，３ｂの取付手段を同一構成とすれば、何れの側片３ａ，３ｂの側からでも配線器具Ｃを取り外すことができるために施工性の向上が図れる。また、配線器具Ｃを取り付ける際に撓み片９を外側に撓ませながら配線器具Ｃを前方へ押し込むのに必要な力が低減されるとともに、配線器具Ｃの係止爪６２による撓み片９の削れも減少する。
【００３２】
ところで本実施形態の配線器具用プレートは、１個の配線器具Ｃを造営面に埋込配設するものであるが、同寸法の配線器具Ｃを幅方向に複数個並べて埋込配設する配線器具用プレートにも本発明の技術思想が適用可能である。
【００３３】
図１４は３個の配線器具Ｃを幅方向に並べて埋込配設するための３個用のプレート枠Ａを示しており、上述の１個用のプレート枠Ａと異なる点は、開口部２の水平方向の寸法が３倍である点、上側片３ａに一対の係止溝４が３組設けられている点、下側片３ｂに撓み片９が３つ設けられている点、左右両側片３ｃ，３ｄに凹所５及びボックスねじ挿通孔６ｃ，６ｄが設けられていない点が１個用のプレート枠Ａと異なる。また、図１５は３個用の化粧プレートＢを示しており、プレート枠Ａと同様に開口窓３１ａの水平方向の寸法が１個用の３倍である点、規制リブ３５が３つ突設されている点を除いて１個用の化粧プレートＢと共通である。したがって、プレート枠Ａも化粧プレートＢも基本的な構成は１個用と３個用で共通であるから説明は省略する。
【００３４】
而して、３個用のプレート枠Ａにおいても、ボックスねじ挿通孔６ａ，６ｂに挿通したボックスねじ４０を締め付けたときにボックスねじ挿通孔６ａ，６ｂ周辺の部位が多少変形しても、ボックスねじ４０の締め付けに起因したプレート枠Ａの変形が撓み片９にまでは及び難くなるから、配線器具Ｃの係止爪６２と撓み片９の係止段部９ｂとの係止が外れないようにして配線器具Ｃの脱落を防止することができる。
【００３５】
【発明の効果】
請求項１の発明は、埋込型の配線器具の機能面を露出させる開口部を有するとともに開口部を挟んで対向する両部位に配線器具を取り付けるための取付手段を具備して造営面に設けられた埋込孔の開口面側を覆う合成樹脂製のプレート枠と、配線器具の機能面を露出させる開口窓を有するとともにプレート枠に取着されてプレート枠の前面を覆う化粧プレートとを備え、埋込孔内に配設される埋込ボックスにプレート枠を取り付けるためのボックスねじが挿通されるボックスねじ挿通孔をプレート枠の開口部を挟んで対向する部位に設け、プレート枠の開口部の周縁に設けられて配線器具の一方の側面に突出した係止爪を係止する係止溝と、係止溝に対向するプレート枠の開口部の周縁より後方へ突設された一対の橋絡片と、配線器具の他方の側面に突出した係止爪を係止する係止段部を有し一対の橋絡片間に撓み自在に設けられる撓み片と、プレート枠に設けられ撓み片をプレート枠の前面側から操作するための操作窓とで少なくとも一方の取付手段を構成したことを特徴とし、ボックスねじ挿通孔に挿通したボックスねじを締め付けたときにボックスねじ挿通孔周辺の部位が多少変形しても、ボックスねじの締め付けに起因したプレート枠の変形が、橋絡片間に設けられてボックスねじ挿通孔周辺の部位から離間されている撓み片にまでは及び難く、しかも、配線器具の係止爪が係止する係止段部を撓み片に設けていることによって、ボックスねじを締め付けたときに係止爪と撓み片の係止段部との係止が外れないようにして配線器具の脱落を防止することができる。
【００３６】
請求項２の発明は、請求項１の発明において、プレート枠の撓み片を挟んで操作窓と対向する部位に貫通溝を形成し、この貫通溝を通して撓み片に当接することで撓み片の撓みを規制する規制リブを化粧プレートの背面側に突設したことを特徴とし、化粧プレートに設けた規制リブを貫通溝を通して撓み片に当接させることにより、化粧プレートをプレート枠に取り付けた状態では規制リブによって撓み片の撓みが規制されるから、配線器具に比較的大きな力が加えられた場合でも、配線器具の係止爪と撓み片の係止段部との係止がさらに外れ難くなる。
【００３７】
請求項３の発明は、請求項２の発明において、化粧プレートの背面側に化粧プレートの前後方向に延びる突片を突設し、突片が挿通される挿通孔をプレート枠の前面に形成し、挿通孔の周縁に突出する受け部に係止する複数の爪を、突片の先端部に化粧プレートの前後方向に沿って列設するとともに、何れの爪が受け部に係止した状態においても撓み片に当接し得る寸法に規制リブを形成したことを特徴とし、係止する受け部と爪の組み合わせに応じて、埋込孔が設けられる造営面と化粧プレートの間の隙間の寸法を変えることができる。その結果、造営面と化粧プレートの間に壁紙を挟み込んだ場合でも受け部と爪の係止によって化粧プレートを確実にプレート枠に取り付けることができる。しかも、化粧プレートの規制リブを、何れの爪が受け部に係止した状態においても撓み片に当接し得る寸法に形成しているから、造営面と化粧プレートの間に壁紙を挟み込んだ場合でも規制リブを撓み片に当接させることができる。
【００３８】
請求項４の発明は、請求項２又は３の発明において、プレート枠の背面側から貫通溝に挿通された規制リブを逃がす逃がし部を撓み片に設けたことを特徴とし、撓み片に設けた逃がし部で規制リブを逃げることにより、プレート枠を前後逆にして化粧プレート内に収納することができる。したがって、工場から出荷されてから実際に使用されるまでの間は袋などの包装材で包装されるのであるが、プレート枠を前後逆にして化粧プレート内に収納した状態ではプレート枠及び化粧プレートの前面あるいは側面のみが外側に露出することになり、外側への出っ張りを少なくすることができるので、包装材で包装する際の包装作業が容易になるとともに袋などの包装材が傷ついたり破れたりするのを防ぐことができる。
【００３９】
請求項５の発明は、請求項１〜４の何れかの発明において、両方の取付手段を、係止溝、一対の橋絡片、撓み片、並びに操作窓で構成したことを特徴とし、何れの取付手段の側からでも配線器具を取り外すことができるために施工性の向上が図れる。
【図面の簡単な説明】
【図１】本発明の実施形態を示す分解斜視図である。
【図２】同上におけるプレート枠を示し、（ａ）は正面図、（ｂ）は右側面図、（ｃ）は背面図、（ｄ）は上側面図である。
【図３】同上における化粧プレートを示し、（ａ）は正面図、（ｂ）は右側面図、（ｃ）は背面図、（ｄ）は上側面図である。
【図４】同上におけるプレート枠から配線器具を取り外す作業を説明するための説明図である。
【図５】同上におけるプレート枠の要部を示す正面図である。
【図６】同上の断面図である。
【図７】同上の要部断面図である。
【図８】同上の化粧プレートと壁面の間に壁紙を挟んだ状態の断面図である。
【図９】同上の化粧プレートと壁面の間に壁紙を挟んだ状態の要部断面図である。
【図１０】同上におけるプレート枠を前後逆にして化粧プレート内に収納した状態の要部平面図である。
【図１１】同上におけるプレート枠を前後逆にして化粧プレート内に収納する場合の分解斜視図である。
【図１２】同上におけるプレート枠を前後逆にして化粧プレート内に収納した状態の斜視図である。
【図１３】同上におけるプレート枠の他の構成を示す正面図である。
【図１４】同上における３個用のプレート枠を示し、（ａ）は正面図、（ｂ）は右側面図、（ｃ）は背面図、（ｄ）は上側面図である。
【図１５】同上における３個用の化粧プレートを示し、（ａ）は正面図、（ｂ）は右側面図、（ｃ）は背面図、（ｄ）は上側面図である。
【図１６】従来例を示す分解斜視図である。
【図１７】同上の後方から見た分解斜視図である。
【図１８】同上の埋込ボックスに取り付けて施工した状態を示す断面図である。
【図１９】同上におけるプレート枠の要部を示す正面図である。
【図２０】同上の断面図である。
【図２１】同上の要部断面図である。
【符号の説明】
Ａ　プレート枠
Ｂ　化粧プレート
１　プレート枠本体
２　開口部
３ａ〜３ｄ　側片
４　係止溝
６ａ〜６ｄ　ボックスねじ挿通孔
９　撓み片
９ｂ　係止段部
１０　操作窓
４０　ボックスねじ[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring device plate for arranging a wiring device in an embedding hole provided on a construction surface such as a wall surface.
[0002]
[Prior art]
Conventionally, as shown in FIGS. 16 to 18, an embedding box (switch box) 41 is buried in a construction surface W such as a wall surface, and a plate frame A ′ to which a wiring device C such as an outlet is detachably attached is connected to a box screw 40. Thus, a wiring device plate is provided in which the wiring device C is mounted on a wall or the like with good appearance by mounting the decorative plate B 'on the front surface of the plate frame A' by attaching the decorative plate B 'to the mounting box 41. ing.
[0003]
The plate frame main body 1 constituting the plate frame A 'is made of a substantially rectangular frame-shaped synthetic resin molded product having rounded corners as shown in FIGS. A rectangular opening 2 is provided to expose the functional surface of the body 60 of the wiring device C (the surface provided with the switch operating body and the surface provided with the outlet of the outlet) to the front side. A locking groove 50a into which one of the locking claws 62 of the wiring tool C is inserted and locked in a side piece (hereinafter, referred to as a "lower piece") 3b of the plate frame main body 1 located below the opening 2. Is provided, and the other locking claw 62 of the wiring device C is inserted into a side piece (hereinafter, referred to as an “upper piece”) 3 a located above the opening 2. A locking groove 4 to be stopped is provided.
[0004]
The lower portion 3b of the plate frame main body 1 has an inner portion 51 and an outer portion 52 integrally formed in parallel with a gap 53 therebetween. Is integrally connected to both side pieces 3c and 3d located on the left and right sides of the opening 2 to form the flexible bending piece 50 having flexibility. An elongated groove 54 is formed in the outer portion 52, and the inner portion of the groove 54 is made thinner so that the bending piece 50 can be easily bent in the lateral direction.
[0005]
The four side pieces 3a to 3d surrounding the opening 2 of the plate frame main body 1 are each formed with a recess 5. Each recess 5 is used to mount the plate frame A 'to the embedding box 41. Elongated box screw insertion holes 6a to 6d through which the box screws 40 are inserted are provided. That is, the box screw 40 inserted into the box screw insertion holes 6a to 6d provided in the recesses 5 of the upper and lower pieces 3a, 3b or the left and right pieces 3c, 3d opposed to each other with the opening 2 interposed therebetween is used. The plate frame A 'is attached to the embedding box 41 by screwing and screwing into a screw hole formed in the tongue piece 41a, and furthermore, a decorative plate B' is attached to the front surface of the plate frame A 'to provide a wiring device. C can be buried and installed on a wall or the like with good appearance.
[0006]
[Problems to be solved by the invention]
By the way, in the above conventional example, when the box screw 40 inserted into the box screw insertion holes 6a to 6d is tightened to attach the plate frame A 'to the embedding box, as shown in FIG. The upper and lower pieces 3a and 3b (or the left and right pieces 3c and 3d) provided with the upper and lower parts 6a to 6d are deformed so as to be warped rearward. 4 and the bending piece 50, the gap between the locking groove 4 and the locking groove 50a of the bending piece 50 may be widened, and the locking between the locking claw 61 and the locking grooves 4 and 50a may be easily released. Was. When a diagonal force is applied to the wiring device C under such a situation, the locking between the locking claws 61 and the locking grooves 4 and 50a is released, and the wiring device C falls off from the plate frame. There was a fear. In particular, when the wiring device C is an outlet, the plug 70 is often installed at a low position on the wall surface, so that the plug 70 is inserted diagonally from above, and the diagonal force as described above is likely to be applied. (See FIG. 18).
[0007]
The present invention has been made in view of the above circumstances, and an object of the present invention is to prevent a wiring device from falling off by preventing a locking device from being disengaged from a locking claw when a box screw is tightened. Is to provide.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 has an opening for exposing a functional surface of a buried type wiring device, and mounting means for mounting the wiring device to both portions opposed to each other across the opening. A plate frame made of synthetic resin that covers the opening side of the embedding hole provided on the construction surface, and has an opening window that exposes the functional surface of the wiring device, and is attached to the plate frame to form the plate frame. A decorative plate that covers the front surface, and a portion facing the box screw insertion hole through which the box screw for mounting the plate frame is inserted into the embedding box disposed in the embedding hole across the opening of the plate frame. A locking groove provided on the periphery of the opening of the plate frame to lock a locking claw protruding from one side surface of the wiring device; and a rear side from the periphery of the opening of the plate frame facing the locking groove. A pair protruding from A bridging piece, a bending piece having a locking step for locking a locking claw protruding from the other side surface of the wiring device and being flexibly provided between the pair of bridging pieces, and a bending piece provided on the plate frame. An operation window for operating the piece from the front side of the plate frame constitutes at least one attachment means.
[0009]
According to a second aspect of the present invention, in the first aspect, a through groove is formed in a portion facing the operation window with the flexible piece of the plate frame interposed therebetween, and the flexible piece is bent by contacting the flexible piece through the through groove. A regulating rib for regulating the height is projected from the back side of the decorative plate.
[0010]
According to a third aspect of the present invention, in the invention of the second aspect, a projecting piece extending in the front-rear direction of the decorative plate is provided on the rear side of the decorative plate, and an insertion hole through which the projecting piece is inserted is formed on the front surface of the plate frame. In a state in which a plurality of claws engaging with a receiving portion protruding from the periphery of the insertion hole are arranged in a row along the front-rear direction of the decorative plate at the tip of the protruding piece, The restricting rib is formed to have a dimension capable of contacting the bending piece.
[0011]
According to a fourth aspect of the present invention, in the second or third aspect, a relief portion is provided on the flexible piece to allow the restriction rib inserted from the back side of the plate frame into the through groove to escape.
[0012]
A fifth aspect of the present invention is characterized in that, in any one of the first to fourth aspects of the present invention, both mounting means are constituted by a locking groove, a pair of bridging pieces, a bending piece, and an operation window.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, since the basic configuration of the present embodiment is the same as that of the conventional example, common components are denoted by the same reference numerals and description thereof will not be repeated.
[0014]
As shown in FIG. 1, the wiring device plate of the present embodiment includes a plate frame A and a decorative plate B. As shown in FIG. 2, the plate frame main body 1 of the plate frame A is made of a substantially rectangular frame-shaped synthetic resin molded product having rounded corners in the same manner as in the conventional example, and the functional surface of the wiring device C is provided in the center at the front. A rectangular opening 2 exposed to the side is provided. A recess 5 is provided at the center of each of the four side pieces 3a to 3d located on the upper, lower, left, and right sides of the opening 2, and a long hole-shaped box screw insertion hole 6a to 6d penetrates in each recess 5. Is established.
[0015]
The upper piece 3a is provided with a pair of locking grooves 4 that are opened to the side and front facing the opening 2 and into which one of the locking claws 62 of the wiring device C is inserted and locked. Between the box screw insertion hole 6a and the opening 2 on the back surface of the upper piece 3a, a belt-like reinforcing rib 7a extending in the left-right direction is provided so as to project rearward. 3a is reinforced. Note that the pair of locking grooves 4 are provided so as to straddle the side surface facing the opening 2 of the reinforcing rib 7a and the back surface of the upper piece 3a.
[0016]
On the other hand, between the box screw insertion hole 6b and the opening 2 on the back surface of the lower piece 3b, a pair of substantially triangular bridging pieces 8 is provided to project rearward and substantially convex between the pair of bridging pieces 8. A U-shaped bending piece 9 is formed to be flexible. The bending piece 9 is formed continuously and integrally with a band-shaped reinforcing rib 7b projecting rearward between the box screw insertion hole 6b and the opening 2 on the back surface of the lower piece 3b.
[0017]
On both sides of the central protruding portion 9a of the bending piece 9, locking step portions 9b into which the other locking claws 62 of the wiring device C are inserted and locked are provided. A substantially rectangular operation window 10 in a plan view that exposes the bending piece 9 to the front side is provided in a portion of the lower piece 3b facing the bending piece 9 in the front-rear direction. Further, a projection 10a projecting toward the central projection 9a is formed at the center of the inner peripheral surface of the operation window 10 facing the central projection 9a.
[0018]
On the other hand, between the box screw insertion holes 6c, 6d and the opening 2 on the back surface of the left piece 3c and the right piece 3d, band-shaped reinforcing ribs 7c, 7d projecting rearward respectively are the upper piece 3a and the lower piece. It is formed continuously and integrally with the reinforcing ribs 7a, 7b of 3b. At four corners of the plate frame main body 1, insertion holes 11 into which protruding pieces 33 protruding rearward from the plate main body 30 of the decorative plate B are inserted are provided.
[0019]
Here, an operation of attaching and detaching the wiring device C to and from the plate frame main body 1 will be described. First, in order to attach the wiring device C to the plate frame main body 1, one locking claw 62 of the wiring device C is inserted and locked into the locking groove 4 of the upper piece 3a, respectively, and the other locking claw 62 of the wiring device C is mounted. The wiring device C is attached to the plate frame main body 1 at a position where the locking claw 62 is locked over the locking step 9b while bending the bending piece 9 outward. When the wiring device C is to be removed from the plate frame main body 1, as shown in FIG. 4, the tip of a tool D such as a driver is located between the central projection 9 a of the bending piece 9 and the projection 10 a of the operation window 10 from the front. By inserting and prying, the bending piece 9 may be bent outward to release the locking between the locking step 9b and the locking claw 62.
[0020]
On the other hand, as shown in FIG. 3, the plate body 30 of the decorative plate B is made of an insulating synthetic resin and has a rectangular main portion 31 covering the front surface of the plate frame A, and protrudes rearward from the entire periphery of the main portion 31. And a substantially box-like shape integrally formed with the side wall 32. The protruding pieces 33 are provided at four corners on the rear side of the main portion 31. In addition, an opening window 31a that exposes the functional surface of the wiring device C attached to the plate frame A is provided substantially at the center of the main portion 31.
[0021]
A pair of notches 34 are provided in the side wall 32 on the lower side of the plate body 30, and a jig (a tip of a driver or the like) is inserted into the notch 34 to apply a frontward force to the plate body 30. The engagement between the claw 33a provided on the projecting piece 33 of the plate body 30 and the receiving portion 11a of the insertion hole 11 of the plate frame body 1 is released, so that the decorative plate B can be removed from the plate frame A. At the position corresponding to the cutout portion 34 of the lower piece 3b of the plate frame main body 1, a relief portion 16 which is depressed inward is provided, and the jig inserted into the cutout portion 34 is released to be inserted to the back. This makes it easy to apply force when removing the decorative plate B. Further, a thin rib 17 extends from the rear end of the relief portion 16 to such an extent that it does not protrude from the cutout portion 34 of the decorative plate B (see FIG. 2). That is, there is a possibility that the construction surface may be damaged by applying a force to the jig inserted into the notch portion 34 with the portion contacting the construction surface as a fulcrum, but the jig inserted into the notch portion 34 by providing the rib 17. Comes into contact with the ribs 17, and when the decorative plate B is removed from the plate frame A, the construction surface can be prevented from being damaged by the jig.
[0022]
On the back side of the plate main body 30, as shown in FIG. 3C, a regulating rib 35 is provided to project rearward in parallel with the lower side of the opening window 31a. When the decorative plate B is attached to the plate frame A, the regulating rib 35 is inserted into the through groove 14 that is outside the operation window 10 of the plate frame main body 1 and communicates with the operation window 10, and It is in contact with the bending piece 9 to regulate the movement (bending) of the bending piece 9 of the plate frame A (see FIG. 5).
[0023]
An oval through-hole 18 is provided in the upper piece 3a of the plate frame body 1 on the side of the box screw insertion hole 6a, and a fitting protrusion 36 fitted into the through-hole 18 is a main part of the plate body 30. 31 is provided on the back surface. That is, the decorative plate B can be attached to the plate frame A only in the direction in which the fitting protrusions 36 are fitted into the through holes 18, and the decorative plate B is prevented from being attached to the plate frame A in the wrong direction. are doing.
[0024]
When the box screws 40 inserted into the box screw insertion holes 6a and 6b of the upper piece 3a and the lower piece 3b for attaching the plate frame A to the embedding box 41 as described in the conventional example, the box The portions around the screw insertion holes 6a and 6b are slightly deformed in a shape warping backward. In the conventional example, the inner part 51 and the outer part 52 forming the lower piece 3b are connected at the far end of the gap 53 to both ends integrally with the left and right pieces 3c and 3d of the opening 2, so that the bending piece 50 is formed. Due to the formation, the deformation of the plate frame A due to the tightening of the box screw 40 easily reaches both the portions 51 and 52. On the other hand, in the present embodiment, the flexible piece 9 having the locking step 9b for locking the locking claw 62 of the wiring device C is connected to the pair of bridges provided on the lower piece 3b of the plate frame main body 1. Since the plate frame A is flexibly formed between the pieces 8, the deformation of the plate frame A due to the tightening of the box screws 40 is provided between the bridging pieces 8 and is separated from a portion around the box screw insertion hole 6 b. It is difficult to reach the bending piece 9. As a result, the expansion of the interval between the locking groove 4 and the locking step 9b of the bending piece 9 can be suppressed, so that the locking claw 62 can be locked even when a diagonal force is applied to the wiring device C. The locking of the wiring device C from the plate frame A can be prevented by preventing the engagement with the step portion 9b from being released.
[0025]
By the way, also in the conventional example, as shown in FIGS. 17 and 19, a regulating rib 55 which is inserted into a groove 54 provided in the outer portion 52 of the plate frame main body 1 and regulates the movement of the bending piece 50 has a rear surface of the decorative plate B ′. It was protruding. However, as shown in FIGS. 20 and 21, when the decorative plate B ′ is attached to the plate frame A ′, a gap g is left between the restricting rib 55 and the bending piece 50 in the conventional example. When a force in an oblique direction (direction indicated by an arrow in FIG. 21) is applied to the wiring device C, the bending piece 50 is bent toward the gap g, and the engagement between the locking claw 62 of the wiring device C and the bending piece 50 is increased. There is a possibility that the engagement with the stop groove 50a may be released.
[0026]
On the other hand, in the present embodiment, when the decorative plate B is attached to the plate frame A as described above, the decorative plate B is protruded from the back surface of the plate body 30 of the decorative plate B as shown in FIGS. Since the restricting rib 35 is in contact with the flexure piece 9 through the through groove 14 of the plate frame main body 1, the flexure piece 9 bends even when an oblique force is applied to the wiring device C as described above. Therefore, the locking between the locking claw 62 of the wiring device C and the locking step 9b of the flexible piece 9 can be further prevented from being released.
[0027]
In general, wallpaper (cloth) is often attached to the inner wall of a building such as a house, and in order to embed and dispose the wiring device C on the wall, the wallpaper is cut off at a portion of an embedding hole provided on the wall. It is necessary to make a hole, but in this hole making operation, the wallpaper that blocks the embedding hole cannot be cut off cleanly, and the remaining wallpaper may protrude around the embedding hole. Usually, the protruding portion of the wallpaper is sandwiched between the plate frame A and the wall surface. However, for the sake of construction, the wallpaper is pasted after the plate frame A is attached to the embedding box 41 and arranged on the wall surface. When performing the work (cloth pasting work), the protruding portion of the wallpaper cannot be sandwiched between the plate frame A and the wall surface, and the wallpaper may be sandwiched between the decorative plate B and the wall surface. In the conventional wiring device plate, as shown in FIG. 20, a claw 33a is provided at the tip of a protruding piece 33 protruding from the rear side of the decorative plate B ', and the protruding piece 33 inserted through the insertion hole 11 of the plate frame A'. The decorative plate B 'was attached to the plate frame A' by preventing the protrusion 33 from coming off by engaging the claw 33a with the receiving portion 11a formed on the periphery of the insertion hole 11 in an uneven manner. When the length of the protruding piece 33 is set such that the back surface of the plate frame A 'and the back surface of the side wall 32 of the decorative plate B' are substantially flush with each other while being locked to the receiving portion 11a, the decorative plate There is a possibility that the nail 33a of the decorative plate B 'cannot be locked to the receiving portion 11a of the plate frame A' due to the thickness of the protruding portion of the wallpaper sandwiched between B 'and the wall surface.
[0028]
On the other hand, in the present embodiment, as shown in FIG. 8, two claws 33 a and 33 b are arranged in line at the tip end of the protruding piece 33 of the decorative plate B along the front-rear direction, and one of the claws 33 a and 33 b is attached. The decorative plate B can be attached to the plate frame A by engaging with the receiving portion 11a of the plate frame main body 1. Here, for the sake of simplicity, a portion closer to the tip of the protruding piece 33 will be referred to as a first claw 33a, and the other will be referred to as a second claw 33b.
[0029]
As shown in FIG. 6, in a state where the wallpaper is not sandwiched between the wall surface and the decorative plate B, the second claw 33b of the projection 33 is engaged with the receiving portion 11a of the insertion hole 11 and the projection 33 is pulled out. When the wallpaper K is sandwiched between the wall surface and the decorative plate B as shown in FIG. 8, the first claw 33a of the protruding piece 33 is locked to the receiving portion 11a to prevent it from falling out. Thus, the decorative plate B can be securely attached to the plate frame A. Here, when the second claw 33b of the protruding piece 33 is engaged with the receiving portion 11a, the decorative plate B is slightly floated from the plate frame A. The dimension of the restricting rib 35 is set so that the rib comes into contact with the bending piece 9 of the plate frame A (see FIGS. 8 and 9).
[0030]
By the way, in the present embodiment, as shown in FIG. 10, a relief portion 9 c for releasing the restriction rib 35 inserted into the through groove 14 from the back side of the plate frame A is provided on the flexible piece 9. That is, the plate frame A and the decorative plate B are generally packaged with a packaging material such as a bag from the time of shipment from the factory until they are actually used. When packaging is performed with B attached, the reinforcing ribs 7a to 7d and the like protrude from the back side of the plate frame A, so that the packaging work is difficult to perform due to being caught by the packaging material, or the packaging material may be damaged or broken. There is. Therefore, by escaping the regulating rib 35 at the escape portion 9c provided on the bending piece 9, the plate frame A can be reversed and housed in the decorative plate B as shown in FIG. 11 and FIG. In such a state, only the front or side surfaces of the plate frame A and the decorative plate B are exposed to the outside, and the protrusion to the outside can be reduced, so that the packaging operation when packaging with the packaging material is facilitated. The packaging material such as a bag can be prevented from being damaged or broken.
[0031]
As shown in FIG. 13, the upper piece 3a of the plate frame main body 1 may also be provided with a bridging piece 8, a flexible piece 9, and an operation window 10 so that the mounting means of the upper and lower pieces 3a, 3b may have the same configuration. If the mounting means of the upper and lower pieces 3a, 3b has the same configuration as described above, the wiring device C can be removed from either side piece 3a, 3b, so that the workability can be improved. In addition, the force required to push the wiring tool C forward while bending the bending piece 9 outward when attaching the wiring tool C is reduced, and the bending piece 9 is cut by the locking claw 62 of the wiring tool C. Also decreases.
[0032]
By the way, the wiring device plate of the present embodiment has one wiring device C embedded and arranged on the construction surface. However, a wiring device in which a plurality of wiring devices C of the same size are arranged in the width direction and embedded and installed. The technical idea of the present invention can be applied to an instrument plate.
[0033]
FIG. 14 shows three plate frames A for embedding and arranging three wiring devices C in the width direction. The difference from the one plate frame A is that the opening 2 Is three times larger, the upper piece 3a is provided with three sets of a pair of locking grooves 4, the lower piece 3b is provided with three flexure pieces 9, the left and right sides. The point that the recesses 5 and the box screw insertion holes 6c and 6d are not provided in the pieces 3c and 3d is different from the plate frame A for one piece. FIG. 15 shows three decorative plates B. As in the case of the plate frame A, the horizontal dimension of the opening window 31a is three times as large as that of the one decorative plate B, and three regulating ribs 35 protrude. It is the same as the decorative plate B for one except for the point described above. Therefore, the basic configuration of both the plate frame A and the decorative plate B is the same for one unit and three units, and the description is omitted.
[0034]
Thus, even in the three plate frames A, even if the portions around the box screw insertion holes 6a and 6b are slightly deformed when the box screws 40 inserted into the box screw insertion holes 6a and 6b are tightened, the box Since the deformation of the plate frame A due to the tightening of the screw 40 is unlikely to extend to the bending piece 9, the locking between the locking claw 62 of the wiring device C and the locking step 9 b of the bending piece 9 does not come off. Thus, the wiring device C can be prevented from falling off.
[0035]
【The invention's effect】
The invention according to claim 1 has an opening for exposing a functional surface of a buried type wiring device, and is provided on a construction surface with mounting means for mounting the wiring device on both portions opposed to each other across the opening. A synthetic resin plate frame that covers the opening side of the embedded hole, and a decorative plate that has an opening window that exposes the functional surface of the wiring device and that is attached to the plate frame and covers the front surface of the plate frame. A box screw insertion hole through which a box screw for mounting a plate frame is inserted into an embedding box provided in the embedding hole is provided at a portion facing the opening of the plate frame, and an opening of the plate frame is provided. And a pair of bridges protruding rearward from the periphery of the opening of the plate frame opposed to the locking groove. Entanglement and the other side of the wiring device A flexure is provided between the pair of bridging pieces so as to be flexibly provided between the pair of bridging pieces, and a flexure provided on the plate frame is operated from the front side of the plate frame. And at least one of the mounting means is configured with an operation window for the box screw even if a portion around the box screw insertion hole is slightly deformed when the box screw inserted into the box screw insertion hole is tightened. It is difficult for the deformation of the plate frame due to the tightening to reach the bending piece provided between the bridging pieces and separated from the portion around the box screw insertion hole, and the locking claw of the wiring device is locked. By providing the locking step on the flexible piece, the locking claw and the locking step of the flexible piece do not come off when the box screw is tightened, thereby preventing the wiring device from falling off. Can be.
[0036]
According to a second aspect of the present invention, in the first aspect, a through groove is formed in a portion facing the operation window with the flexible piece of the plate frame interposed therebetween, and the flexible piece is bent by contacting the flexible piece through the through groove. In the state that the decorative plate is attached to the plate frame, the restricting rib provided on the decorative plate is projected from the back side of the decorative plate, and the restricting rib provided on the decorative plate is brought into contact with the bending piece through the through groove. Since the bending of the flexible piece is regulated by the restricting rib, even when a relatively large force is applied to the wiring device, the locking between the locking claw of the wiring device and the locking step of the flexible piece is further difficult to be released. .
[0037]
According to a third aspect of the present invention, in the invention of the second aspect, a projecting piece extending in the front-rear direction of the decorative plate is provided on the rear side of the decorative plate, and an insertion hole through which the projecting piece is inserted is formed on the front surface of the plate frame. In a state in which a plurality of claws engaging with a receiving portion protruding from the periphery of the insertion hole are arranged in a row along the front-rear direction of the decorative plate at the tip of the protruding piece, Also, the regulating rib is formed to a size that can contact the bending piece, and according to the combination of the receiving part and the claw to be locked, the size of the gap between the construction surface where the embedding hole is provided and the decorative plate is Can be changed. As a result, even when the wallpaper is sandwiched between the construction surface and the decorative plate, the decorative plate can be securely attached to the plate frame by the locking of the receiving portion and the nail. In addition, since the regulating rib of the decorative plate is formed to have a dimension capable of abutting on the bending piece even when any of the claws are engaged with the receiving portion, even if the wallpaper is sandwiched between the construction surface and the decorative plate. The restricting rib can be brought into contact with the bending piece.
[0038]
According to a fourth aspect of the present invention, in the second or third aspect of the present invention, a relief portion is provided on the flexure piece to release the regulating rib inserted into the through groove from the back side of the plate frame. By escaping the regulating ribs at the escape portion, the plate frame can be reversed and stored in the decorative plate. Therefore, it is packaged in a packaging material such as a bag from the time of shipment from the factory until it is actually used. Only the front or side of the wrapper is exposed to the outside, which can reduce the protrusion to the outside, making it easier to perform the wrapping work with the wrapping material and damaging or breaking the wrapping material such as bags. Can be prevented.
[0039]
According to a fifth aspect of the present invention, in any one of the first to fourth aspects of the present invention, both mounting means are constituted by a locking groove, a pair of bridging pieces, a bending piece, and an operation window. Since the wiring device can be removed from the side of the mounting means, the workability can be improved.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an embodiment of the present invention.
2 (a) is a front view, FIG. 2 (b) is a right side view, FIG. 2 (c) is a rear view, and FIG. 2 (d) is a top view.
FIGS. 3A and 3B show the decorative plate in the above, wherein FIG. 3A is a front view, FIG. 3B is a right side view, FIG. 3C is a rear view, and FIG.
FIG. 4 is an explanatory diagram for explaining an operation of removing the wiring device from the plate frame in the above.
FIG. 5 is a front view showing a main part of the plate frame in the above.
FIG. 6 is a sectional view of the same.
FIG. 7 is a sectional view of a main part of the above.
FIG. 8 is a cross-sectional view showing a state in which wallpaper is interposed between the decorative plate and a wall surface of the same.
FIG. 9 is a cross-sectional view of a main part in a state where wallpaper is sandwiched between a decorative plate and a wall surface of the same.
FIG. 10 is a plan view of a main part in a state where the plate frame in the above is housed in a decorative plate with the front and back reversed.
FIG. 11 is an exploded perspective view showing a case where the plate frame in the above is inverted and stored in a decorative plate.
FIG. 12 is a perspective view of a state in which the plate frame in the above is housed in a decorative plate with the front and back reversed.
FIG. 13 is a front view showing another configuration of the plate frame in the above.
14 (a) is a front view, FIG. 14 (b) is a right side view, FIG. 14 (c) is a rear view, and FIG. 14 (d) is a top side view.
FIGS. 15A and 15B show three decorative plates in the above, in which FIG. 15A is a front view, FIG. 15B is a right side view, FIG. 15C is a rear view, and FIG.
FIG. 16 is an exploded perspective view showing a conventional example.
FIG. 17 is an exploded perspective view of the same as viewed from the rear.
FIG. 18 is a cross-sectional view showing a state where it is attached to the embedding box and constructed.
FIG. 19 is a front view showing a main part of the plate frame in the above.
FIG. 20 is a sectional view of the above.
FIG. 21 is a sectional view of a main part of the above.
[Explanation of symbols]
A plate frame
B decorative plate
1 Plate frame body
2 opening
3a-3d side piece
4 Lock groove
6a to 6d Box screw insertion hole
9 Flexure pieces
9b Locking step
10 Operation window
40 Box screw

Claims

An opening of a buried hole provided on a construction surface, having an opening for exposing a functional surface of a buried type wiring device, and having mounting means for mounting a wiring device on both sides opposed to the opening. A plate frame made of a synthetic resin that covers the front side, a decorative plate that has an opening window for exposing the functional surface of the wiring device and that is attached to the plate frame and covers the front surface of the plate frame, and is disposed in the embedding hole. A box screw insertion hole through which a box screw for attaching the plate frame to the embedded box to be installed is provided at a portion opposed to the opening of the plate frame across the opening, and a wiring is provided at the periphery of the opening of the plate frame. A locking groove for locking a locking claw protruding from one side of the device, a pair of bridging pieces projecting rearward from a peripheral edge of an opening of the plate frame facing the locking groove, and a wiring device. Entrance protruding from the other side A bending piece having a locking step for locking the pawl and being flexibly provided between a pair of bridging pieces, and an operation window provided on the plate frame for operating the bending piece from the front side of the plate frame. A plate for wiring equipment, wherein at least one of the attachment means is configured.

A through-groove is formed at a portion facing the operation window with the bending piece of the plate frame interposed therebetween, and a restricting rib for restricting the bending of the bending piece by contacting the bending piece through this through-groove is provided on the rear side of the decorative plate. The wiring device plate according to claim 1, wherein:

On the back side of the decorative plate, a protruding piece extending in the front-rear direction of the decorative plate is protruded, an insertion hole through which the protruding piece is inserted is formed on the front surface of the plate frame, and is engaged with a receiving portion protruding from a peripheral edge of the insertion hole. A plurality of claws were arranged at the tip of the protruding piece along the front-rear direction of the decorative plate, and a restricting rib was formed to a size capable of abutting on the bending piece even when any of the claws was locked on the receiving portion. The wiring device plate according to claim 2, wherein:

4. The wiring device plate according to claim 2, wherein an escape portion for allowing the restriction rib inserted into the through groove from the back side of the plate frame to escape is provided on the flexible piece.

The plate for a wiring device according to any one of claims 1 to 4, wherein both of the mounting means include a locking groove, a pair of bridging pieces, a bending piece, and an operation window.