JP3990759B2 - Electrical wiring box locking device - Google Patents

Electrical wiring box locking device Download PDF

Info

Publication number
JP3990759B2
JP3990759B2 JP33957396A JP33957396A JP3990759B2 JP 3990759 B2 JP3990759 B2 JP 3990759B2 JP 33957396 A JP33957396 A JP 33957396A JP 33957396 A JP33957396 A JP 33957396A JP 3990759 B2 JP3990759 B2 JP 3990759B2
Authority
JP
Japan
Prior art keywords
screw
spring member
main body
box
engaging
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP33957396A
Other languages
Japanese (ja)
Other versions
JPH10178707A (en
Inventor
健治朗 渡辺
Original Assignee
三明電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三明電機株式会社 filed Critical 三明電機株式会社
Priority to JP33957396A priority Critical patent/JP3990759B2/en
Publication of JPH10178707A publication Critical patent/JPH10178707A/en
Application granted granted Critical
Publication of JP3990759B2 publication Critical patent/JP3990759B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Patch Boards (AREA)
  • Connection Or Junction Boxes (AREA)

Description

【0001】
【発明の属する技術分野】
この発明は、特に制御箱、配電箱、操作箱、端子箱等の電気部品が配線される電気配線箱に関し、さらに、電気配線箱の扉を施錠する施錠装置に関する。
【0002】
【従来の技術】
一般に、電気配線箱は、人が簡単に電気に接触することのないように、扉をビスにより固定されるように構成されている。従来の電気配線箱は、図11に示されるように、電気部品が配線される本体ボックス25と、本体ボックス25の一端側で蝶番により開閉可能に取り付けられた扉26と、を有して構成され、扉26を施錠する場合には、本体ボックス25の他端に固着されたナット27に、扉の他端側に、落下されないように取り付けられたビス28を挿入してナット27に締め付けるようにしていた。そのため、電気配線箱の内部を操作する時や配線作業をする時には、ビス28を工具で緩めて扉を開き、また、作業の終了した時には、扉を閉じた後、ビス28を工具で締め付けるようにしていた。
【0003】
【発明が解決しようとする課題】
しかし、電気配線箱の扉を開閉する場合、扉を閉じる場合には容易に素早く閉じることが望まれるものの、扉を開く際には、安全保護のために、電気関係者が開く意志をもって開けるようにすることが指導されている。従来の場合においては、一般に提供されているビスが使用されているので、扉を閉める場合は工具を使用してビスを閉め込むため、その作業に時間がかかり、扉を開く場合には、例えば一般の人が10円玉等を使用して開けてしまうことがあるため、危険を防止することに限界がある。
【0004】
この発明は、上述の課題を解決するものであり、扉を閉める時にはワンタッチで容易に行なえ、扉を開ける時には専用の工具を使用して安全に作業を行なうことのできる配線箱の施錠装置を提供することを目的とする。
【0005】
【課題を解決するための手段】
この発明にかかわる電気配線箱の施錠装置では、上記の課題を解決するために以下のように構成するものである。すなわち、
本体ボックスに配設されるビス受け部と、本体ボックスに開閉可能に配置される扉に配設されるビス部材と、を有し、前記ビス部材を前記ビス受け部に係合させるための電気配線箱の施錠装置であって、
前記ビス受け部が、ビス受け部本体と、前記ビス受け部本体内に配設される板状のばね部材と、有して構成され、
前記ビス受け部本体に、前記ビスが挿入される際の、テーパ状の挿入ガイドが形成され、前記ばね部材が、前記ビスのねじのリード角に沿って前記ビス受け本体に配設されるとともに、前記ばね部材に、前記ビスのねじに齒合される係合部が形成され、前記係合部に、前記ビスが挿入される際、前記ビスの挿入方向に弾性を有するように複数の切欠穴が連接され、
前記ビスを前記係合部に挿入する際、前記ビスを前記ばね部材の係合穴の回りを押圧するように挿入し、前記ビスを前記係合部から離脱する際、前記ビスを緩める方向に回転する、ように作用され
矩形に形成される前記ばね部材の一面に、外方に広がる円弧状の切欠面が形成され、前記複数の切欠穴の内、一個の切欠穴が前記係合部から前記切欠面にかけて形成されていることを特徴とするものである。
【0009】
さらに、前記ばね部材に形成される係合部が、前記係合部以外の面より反扉側に凹部状に形成されることを特徴とするものであってもよい。
【0010】
また、前記ビスの頭部に工具係止部が形成され、前記ビスの下部に、前記本体ボックスの挿入ガイドに対向するテーパ部が形成されることを特徴とするものであればなお好ましい。
【0011】
【発明の実施の形態】
以下、この発明の一実施の形態を図面に基づいて説明する。
【0012】
本形態の電気配線箱の施錠装置(以下、施錠装置という)5は、図1に示されるように、箱状に形成される本体ボックス2と、本体ボックス2に一端が蝶番で取り付けられる扉3と、を備える電気配線箱1内に取り付けられ、図2に示されるように、本体ボックス2に取り付けられるビス受け部10と、扉3に取り付けられるビス20とを有して構成される。
【0013】
ビス20は、専用工具に係合される工具係止部21aを有する頭部21と、先端部にテーパ面22aを有するねじ部22と、中央部にねじ部22の内型より小さく形成される胴体部23とから形成され、扉3に形成された略だるま状の穴の***部3aに挿入されると軸方向に抜けることのないように配設されている。
【0014】
ビス受け部10は、図3の断面斜視図に示されるように、ビス挿入口を除いて密閉状態の箱型に形成されるビス受け部本体(以下、本体という)11と、本体11の中空部を横断するように配設される薄板状のばね部材15と、を有して構成されている。本体11が箱型に形成されているのは、例え、油等が侵入する場合に、本体ボックス2内に侵入することを防ぐようにしているためである。
【0015】
本体11は、プラスチック等の樹脂で形成され、本体11には、本体ボックス2に取り付けられる段付きフランジ部12と箱部13が一体的に形成され、段付きフランジ部12には本体ボックス2に嵌合される係止面12aと中央部を縦断するビス挿入ガイド部12bが形成されている。挿入ガイド部12bは中央部が凸状に形成され、内から外に向かって広がるテーパ状に形成されている。箱部13は中空状に形成され、両側壁部の中央部にそれぞれ突起部13aがフランジ部12に平行に相対するように形成され、それぞれの突起部13aに、突起部13aの長手方向に溝13bが形成されている。それぞれの溝部13bは、図4に示されるように、ばね部材15がビス20のねじ部22のリード角に沿って配置されるように、突起部13aの端面より傾斜して形成され、ばね部材15の両端部が嵌入される。そして、ばね部材15の両端面と溝13bの溝底部との間には隙間13cが形成される。
【0016】
板状のばね部材15は、リン青銅製で薄板の矩形に形成され中央部にビス20のねじ部22と齒合する係合部16及び係合部16に連接される複数個の切欠穴17が形成され、その形態は図5〜図9に示される各種のものが提案される。
【0017】
図5におけるばね部材15Aは、一面に外方に広がる円弧状の切欠面18が形成され、中央部にビス20のねじ部22の内径より大きく、外形より小さい穴部16aを有する係合部16と、係合部16の穴部に連接されているスリット状の短い切欠穴17aとスリット状の長い切欠穴17bがそれぞれ対向するように2個づつ形成され、短い切欠穴17bの1個が切欠面18に連接されている。従ってビス20のねじ部22は係合部16の穴部16aの切欠穴17a・17bを除く内周面16bに齒合されるとともに、ビス20の先端部テーパ面22aが係合部16の穴部16aに挿入されると、ねじ部22が係合部16全体を下方(ビスの挿入方向に対して前方)に押圧し、係合部16が弾性的に撓むことによってビス20のねじ部22が挿入され、ビス20の挿入移動が停止されると係合部16が復帰しねじ部22と係合部16が齒合されることになる。また、ビスのねじ部22が係合部16を押圧する際に、切欠面18に連接される切欠穴17aは広がり、ばね部材15の両端部を、本体部11の箱部13に形成される突起部13aの溝底との間に形成される隙間13c内において、広げるように撓ませる。
【0018】
図6に示されるばね部材15Bは、図5に示されるばね部材15Aと略同様に形成され、切欠穴17a・17bがばね部材15Aのものより広幅に形成されている。従って、ビス20が挿入される際の係合部16の撓み量は、ばね部材15Aより僅かに大きい。
【0019】
図7に示されるばね部材15Cは、矩形に形成され、係合部16の穴部16aに連接されて形成される切欠穴17が、穴部16aにかかる部分から穴部16aと離れる部分に向かって広がっている。そして切欠穴17は穴部16aに対して放射線状に4個形成されている。ビス20の先端部テーパ面22aが係合部16の穴部16aに挿入されると、ねじ部22が係合部16全体を下方(ビスの挿入方向に対して前方)に押圧し、係合部16が弾性的に撓むことによってビス20のねじ部22が挿入され、ビス20の挿入移動が停止されると係合部16が復帰しねじ部22と係合部16が齒合されることになる。この場合、切欠穴17がばね部材15Bに比べて大きく形成されているので、係合部16のねじ部22との齒合部分の面積が小さくなり、ビス20が挿入される際の係合部16の下方の撓み量は、ばね部材15Bより大きくなる。
【0020】
図8に示されるばね部材15Dは、図7に示されるばね部材15Cと略同様に形成され、切欠穴17の広がり状態がばね部材15Cに比べて大きく形成されている。従って、ビス20が挿入される際の係合部16の撓み量は、ばね部材15Cに比べてさらに大きくなる。
【0021】
図9に示されるばね部材15Eは、係合部16の穴部16aから一方に短いスリット状の切欠穴17aが形成され、対向する位置に穴部16aから外周端面にわたって、穴部16aから外周端面に向かって広がるような切欠穴17cが形成されている。そしてその幅は比較的大きめに形成される。従って、ビス20が挿入される際の係合部16の横方向に広がる撓み量は、ばね部材16Bより大きくなる。
【0022】
上述の形態におけるばね部材15の係合部16は、他の部位と同一平面上に形成されているが、いずれの場合でも、図10に示されるように、係合部16以外の面より下方(ビス20の挿入方向に対して前方)に凹部を有するように形成されていれば、ビス20の挿入を容易にすることができるので好ましい。
【0023】
一方、扉3には、ビス20が配置される回りに弾性状のパッキン6が固着され、扉3を本体ボックス2に閉じる際に緩衝の役目をするとともに、ビス20から流れてくる油を外部に漏れないようにしている。パッキン6は中央部にビス穴が形成され、一方の側面部が扉3の端部突起部3bに当接され、他方の側面部が扉3を閉じた時に、本体ボックス2の端部突起部2aに当接するように扉に固着され、扉3を閉じた時にビス受け部10の本体11に形成されるフランジ部12の係合面12aに係合されるように形成されている。
【0024】
また、ビス20を緩める際に使用される専用工具は、例えば、マイナスドライバー状に形成されるものでは一般のマイナスドライバーより係止部の厚みの小さいものが使用される。そのため、ビス20の工具係止部21aもその専用工具の厚みに合わせたものに形成される。従って、例えば10円玉は工具係止部21aには入らないことになる。
【0025】
次に、上記のように構成される電気配線箱の施錠装置5の作用を説明する。
【0026】
ビス受け部内に配設される板ばね状のばね部材15は、図5に示されるばね部材15Aが使用されている。
【0027】
まず、図1のように、扉3が本体ボックス2に対して開いている状態から扉3を本体ボックス2に向かって閉じる。ビス20は扉3から抜けることなく取り付けられた状態に配設されている。扉3が本体ボックス2に閉じられた後、ビス20の頭部21を手でビス受け部10に向かって押し込めると、ビス20は、その先端部のテーパ面22aが、テーパ状に形成される本体11のビス挿入ガイド部12bに横方向に規制されながら案内されて本体11の奥側に移動される。さらに、ビス20は、テーパ面22aがばね部材15Aの係合部16の穴部16aに挿入され、ねじ部22が係合部16を押圧するため、係合部16が奥側に撓み、穴部16aが広がってねじ部22がばね部材15Aを挿通することになる。そして、ビス20が最前進位置に達すると、その移動が停止され、ばね部材15Aの係合部16が撓み分復帰され、係合部16の内周面16bがねじ部22に齒合されることになる。
【0028】
次に、扉を開けるようにするには、専用工具を使用する。ビス20の頭部21に形成されている工具係止部21aは、本形態では十字状に形成されているため、十字状の先端部を有するプラスドライバ−が使用される。通常のプラスドライバーではその十字状の厚みが大きいため、厚みを小さくした専用のプラスドライバーが使用される。プラスドライバーの十字部を工具係止穴21aに係止し、ビスに向かって、反時計方向に回転させると、ビス20のねじ部22は、ばね部材15A係合部16に対して一山づつ回転されながら、後方に移動される。この際ばね部材15Aは、ねじ部22のリード角に沿って本体11の箱部13内に配置されているので、ビス20はスムーズに回転され緩める方向に移動されることになる。
【0029】
従って、上記形態の施錠装置5は、ビスを挿入する時はワンタッチで挿入され、ビスを緩める時は専用工具でねじ部22を回転させるように構成されまた作用される。
【0030】
なお、上記形態の施錠装置5は上記に限らず、別の形態が考えられる。例えば、ばね部材15はいずれの場合においても、ビス20の挿入方向に2枚平行に配設することもできる。ばね部材15を2枚並設することにより、ビス20との係合をより確実にする。この場合には当然のことながら、本体部11に形成される突起部13aの溝13bはそれぞれ2箇所に形成される。
【0031】
また、ビス20の回りに配設されるパッキン6のビス穴を、ビスの胴体部に近づけるように形成するか、また、ビス20の胴体部23を扉3の板厚より僅かに大きくするように全体を短くし、その分ねじ部22を長くすることによって、扉3に取り付けられるビス20の遊びを小さくすることもできる。
【0032】
さらに、本体11のフランジ部12に形成されるビス挿入ガイド部12bは中央部に凸部が形成されないテーパ状でもよい。
【0033】
また、本体11は、図3の断面斜視図に示されるような形状で、2分割されたボックスを組み合わせるようにして形成してもよい。
【0034】
【発明の効果】
本発明の電気配線箱の施錠装置によれば、施錠装置は、本体ボックスに配設されるビス受け部と、本体ボックスに開閉可能に配置される扉に配設されるビス部材とを、有して構成されている。そして、前記ビス受け部に、板状のばね部材が、前記ビスのねじのリード角に沿ってビス受け本体に配設されている。前記ばね部材に、前記ビスのねじに齒合される係合部が形成され、前記係合部に、前記ビスが挿入される際、前記ビスの挿入方向に弾性を有するように複数の切欠穴が連接されている。そして、前記扉を本体ボックスに閉じる場合は、前記ビスを前記ばね部材の係合穴の回りを押圧するように挿入し、前記扉を本体ボックスから開ける場合は、前記ビスを専用工具によって緩める方向に回転させる。
【0035】
そのため、扉を閉じる時にワンタッチで行なうことができるので、時間がかからず、扉を開ける時には、専用工具で行なわなければならないので、危険防止に役立つ。
【0036】
また、前記本体ボックスには中央部が凸状に形成される前記ビス部材の挿入ガイドが形成されているので前記ビス部材を前記ビス受け部に確実に挿入することができる。
【図面の簡単な説明】
【図1】本発明の一実施の形態による施錠装置を有する電気配線箱を示す斜視図
【図2】図1における施錠装置の断面を示す図
【図3】図2におけるビス受け部を示す断面斜視図
【図4】図2におけるばね部材の取り付け状態を示す断面図
【図5】図2における一形態のばね部材を示す図
【図6】図2における別の形態のばね部材を示す図
【図7】図2における別の形態のばね部材を示す図
【図8】図2における別の形態のばね部材を示す図
【図9】図2における別の形態のばね部材を示す図
【図10】図2におけるばね部材の断面の一形態を示す図
【図11】従来の施錠装置を示す図
【符号の説明】
1…電気配線箱
2…本体ボックス
3…扉
5…施錠装置
10…ビス受け部
11…ビス受け部本体
12b…ビス挿入ガイド部
15(15A〜15E)…ばね部材
16…係合部
17(17a〜17c)…切欠穴
18…切欠面
20…ビス
21a…工具係止部
22…ねじ部
22a…テーパ面
[0001]
BACKGROUND OF THE INVENTION
The present invention particularly relates to an electrical wiring box to which electrical parts such as a control box, a distribution box, an operation box, and a terminal box are wired, and further relates to a locking device that locks a door of the electrical wiring box.
[0002]
[Prior art]
Generally, the electrical distribution box is configured such that a door is fixed with a screw so that a person does not easily come into contact with electricity. As shown in FIG. 11, the conventional electric wiring box has a main body box 25 to which electric parts are wired, and a door 26 that is attached to one end of the main body box 25 so as to be opened and closed by a hinge. When the door 26 is locked, a screw 28 attached to the other end side of the door so as not to drop is inserted into the nut 27 fixed to the other end of the main body box 25 and tightened to the nut 27. I was doing. Therefore, when operating the inside of the electrical wiring box or performing wiring work, the screw 28 is loosened with a tool to open the door, and when the work is completed, the door 28 is closed and then the screw 28 is tightened with the tool. I was doing.
[0003]
[Problems to be solved by the invention]
However, when opening and closing the door of the electrical distribution box, it is desirable to close it easily and quickly, but when opening the door, the electrical personnel should open with the will to open for safety protection. It is instructed to do. In the conventional case, since a generally provided screw is used, when closing the door, the screw is closed using a tool, so it takes time to work, and when opening the door, for example, Since a general person may open using a 10-yen coin or the like, there is a limit to preventing danger.
[0004]
The present invention solves the above-mentioned problems and provides a wiring box locking device that can be easily operated with one touch when the door is closed and can be safely operated using a dedicated tool when the door is opened. The purpose is to do.
[0005]
[Means for Solving the Problems]
The electrical wiring box locking device according to the present invention is configured as follows in order to solve the above problems. That is,
Has a screw receiving portion disposed on the body box, a bis member disposed on the door which is openably disposed in the body box, the electrical for engaging the screw member in the screw receiving portion A wiring box locking device,
The screw receiving portion has a screw receiving portion main body and a plate-like spring member disposed in the screw receiving portion main body.
When the screw is inserted, a tapered insertion guide is formed in the screw receiving portion main body, and the spring member is disposed in the screw receiving portion main body along a lead angle of the screw screw. In addition, the spring member is formed with an engaging portion to be engaged with the screw of the screw, and when the screw is inserted into the engaging portion, the spring member has a plurality of elasticity so as to have elasticity in the inserting direction of the screw. Notch holes are connected,
When inserting the screw into the engaging portion, the screw is inserted so as to press around the engaging hole of the spring member, and when the screw is detached from the engaging portion, the screw is loosened. Rotate, acted like ,
An arcuate cutout surface extending outward is formed on one surface of the spring member formed in a rectangular shape, and one cutout hole is formed from the engagement portion to the cutout surface among the plurality of cutout holes. it is characterized in that there.
[0009]
Furthermore, the engaging part formed in the spring member may be formed in a concave shape on the side opposite the door from the surface other than the engaging part.
[0010]
Further, it is more preferable that a tool locking portion is formed on the head of the screw, and a tapered portion facing the insertion guide of the main body box is formed on the lower portion of the screw.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0012]
As shown in FIG. 1, a locking device (hereinafter referred to as a locking device) 5 of an electrical wiring box according to this embodiment includes a main body box 2 formed in a box shape, and a door 3 attached at one end to the main body box 2 with a hinge. The screw receiving portion 10 is attached to the main body box 2 and the screw 20 is attached to the door 3 as shown in FIG.
[0013]
The screw 20 is formed smaller than the inner die of the screw portion 22 at the center portion, a head portion 21 having a tool locking portion 21a engaged with a dedicated tool, a screw portion 22 having a tapered surface 22a at the tip portion. The body portion 23 is formed so as not to come out in the axial direction when inserted into the small hole portion 3a of a substantially daruma-shaped hole formed in the door 3.
[0014]
As shown in the cross-sectional perspective view of FIG. 3, the screw receiving portion 10 includes a screw receiving portion main body (hereinafter referred to as a main body) 11 formed in a sealed box shape excluding the screw insertion port, and a hollow of the main body 11. And a thin plate-like spring member 15 disposed so as to cross the section. The reason why the main body 11 is formed in a box shape is to prevent intrusion into the main body box 2 when oil or the like enters.
[0015]
The main body 11 is formed of a resin such as plastic, and the main body 11 is integrally formed with a stepped flange portion 12 and a box portion 13 attached to the main body box 2, and the stepped flange portion 12 is formed on the main body box 2. A locking surface 12a to be fitted and a screw insertion guide portion 12b that vertically cuts the center portion are formed. The insertion guide portion 12b is formed in a tapered shape with a central portion formed in a convex shape and spreading from the inside to the outside. The box portion 13 is formed in a hollow shape, and the protruding portions 13a are formed in the central portions of the both side wall portions so as to face the flange portion 12 in parallel, and grooves are formed in the protruding portions 13a in the longitudinal direction of the protruding portions 13a. 13b is formed. As shown in FIG. 4, each groove portion 13 b is formed so as to be inclined from the end surface of the protruding portion 13 a so that the spring member 15 is arranged along the lead angle of the screw portion 22 of the screw 20. The both ends of 15 are inserted. And the clearance gap 13c is formed between the both end surfaces of the spring member 15, and the groove bottom part of the groove | channel 13b.
[0016]
The plate-like spring member 15 is made of phosphor bronze and is formed into a thin rectangular plate. The engaging portion 16 is engaged with the screw portion 22 of the screw 20 at the center, and the plurality of notches 17 are connected to the engaging portion 16. The various forms shown in FIGS. 5 to 9 are proposed.
[0017]
The spring member 15A in FIG. 5 is formed with an arcuate cutout surface 18 extending outwardly on one surface, and an engaging portion 16 having a hole portion 16a that is larger than the inner diameter of the screw portion 22 of the screw 20 and smaller than the outer shape at the center portion. And two slit-like short cut-out holes 17a and slit-like long cut-out holes 17b connected to the hole of the engaging portion 16 are formed so as to face each other, and one of the short cut-out holes 17b is cut out. It is connected to the surface 18. Accordingly, the screw portion 22 of the screw 20 is engaged with the inner peripheral surface 16b excluding the notched holes 17a and 17b of the hole portion 16a of the engaging portion 16, and the tip end tapered surface 22a of the screw 20 is the hole of the engaging portion 16. When inserted into the portion 16a, the screw portion 22 presses the entire engaging portion 16 downward (forward with respect to the inserting direction of the screw), and the engaging portion 16 elastically bends, whereby the screw portion of the screw 20 is pressed. When 22 is inserted and the insertion movement of the screw 20 is stopped, the engaging portion 16 is restored and the screw portion 22 and the engaging portion 16 are engaged. Further, when the screw portion 22 of the screw presses the engaging portion 16, the notch hole 17 a connected to the notch surface 18 widens, and both end portions of the spring member 15 are formed in the box portion 13 of the main body portion 11. In the gap 13c formed between the protrusion 13a and the groove bottom, the protrusion 13a is bent so as to expand.
[0018]
The spring member 15B shown in FIG. 6 is formed in substantially the same manner as the spring member 15A shown in FIG. 5, and the cutout holes 17a and 17b are formed wider than those of the spring member 15A. Therefore, the amount of bending of the engaging portion 16 when the screw 20 is inserted is slightly larger than that of the spring member 15A.
[0019]
The spring member 15C shown in FIG. 7 is formed in a rectangular shape, and the cutout hole 17 formed by being connected to the hole 16a of the engaging portion 16 is directed to a portion away from the hole 16a from the portion covering the hole 16a. Spreading. And four cutout holes 17 are formed radially with respect to the hole 16a. When the tip end tapered surface 22a of the screw 20 is inserted into the hole 16a of the engaging portion 16, the screw portion 22 presses the entire engaging portion 16 downward (forward with respect to the inserting direction of the screw) to engage. When the screw part 22 is elastically bent, the screw part 22 of the screw 20 is inserted, and when the insertion movement of the screw 20 is stopped, the engaging part 16 returns and the screw part 22 and the engaging part 16 are engaged. It will be. In this case, since the notch hole 17 is formed larger than the spring member 15B, the area of the engagement portion with the screw portion 22 of the engagement portion 16 is reduced, and the engagement portion when the screw 20 is inserted. The amount of bending below 16 is larger than that of the spring member 15B.
[0020]
The spring member 15D shown in FIG. 8 is formed in substantially the same manner as the spring member 15C shown in FIG. 7, and the expanded state of the notch hole 17 is larger than that of the spring member 15C. Therefore, the amount of bending of the engaging portion 16 when the screw 20 is inserted is further larger than that of the spring member 15C.
[0021]
The spring member 15E shown in FIG. 9 has a short slit-like hole 17a formed on one side from the hole 16a of the engaging portion 16, and extends from the hole 16a to the outer peripheral end surface at an opposed position and from the hole 16a to the outer peripheral end surface. A notch hole 17c is formed so as to expand toward the front. And the width | variety is formed comparatively large. Therefore, the amount of bending of the engaging portion 16 that extends in the lateral direction when the screw 20 is inserted is greater than that of the spring member 16B.
[0022]
The engaging portion 16 of the spring member 15 in the above-described form is formed on the same plane as other portions, but in any case, as shown in FIG. 10, it is below the surface other than the engaging portion 16. If it is formed so as to have a concave portion (frontward with respect to the insertion direction of the screw 20), it is preferable because the insertion of the screw 20 can be facilitated.
[0023]
On the other hand, an elastic packing 6 is fixed to the door 3 around the position where the screw 20 is disposed, and serves as a buffer when the door 3 is closed to the main body box 2, and oil flowing from the screw 20 is externally supplied. To prevent leakage. The packing 6 is formed with a screw hole in the center, one side surface is in contact with the end protrusion 3b of the door 3, and the other side surface closes the door 3, and the end protrusion of the body box 2 It is fixed to the door so as to abut against 2a, and is formed to be engaged with an engaging surface 12a of the flange portion 12 formed on the main body 11 of the screw receiving portion 10 when the door 3 is closed.
[0024]
In addition, the dedicated tool used when loosening the screw 20 is, for example, a tool that is formed in the shape of a minus driver, and has a smaller locking portion than an ordinary minus driver. Therefore, the tool locking portion 21a of the screw 20 is also formed according to the thickness of the dedicated tool. Therefore, for example, a 10-yen coin does not enter the tool locking portion 21a.
[0025]
Next, the operation of the electrical wiring box locking device 5 configured as described above will be described.
[0026]
A spring member 15A shown in FIG. 5 is used as the leaf spring-like spring member 15 disposed in the screw receiving portion.
[0027]
First, as shown in FIG. 1, the door 3 is closed toward the main body box 2 from a state in which the door 3 is open with respect to the main body box 2. The screws 20 are arranged in a state where they are attached without coming out of the door 3. After the door 3 is closed by the main body box 2, when the head 21 of the screw 20 is pushed into the screw receiving portion 10 by hand, the tapered surface 22a of the tip of the screw 20 is formed in a tapered shape. The screw 11 is guided by the screw insertion guide portion 12 b of the main body 11 while being laterally restricted and moved to the back side of the main body 11. Further, the screw 20 has a tapered surface 22a inserted into the hole 16a of the engaging portion 16 of the spring member 15A, and the screw portion 22 presses the engaging portion 16, so that the engaging portion 16 bends to the back side and the hole The portion 16a spreads and the screw portion 22 passes through the spring member 15A. Then, when the screw 20 reaches the most advanced position, the movement is stopped, the engaging portion 16 of the spring member 15A is returned by bending, and the inner peripheral surface 16b of the engaging portion 16 is engaged with the screw portion 22. It will be.
[0028]
Next, a special tool is used to open the door. Since the tool locking portion 21a formed on the head portion 21 of the screw 20 is formed in a cross shape in this embodiment, a Phillips screwdriver having a cross-shaped tip portion is used. Since an ordinary Phillips screwdriver has a large cross-shaped thickness, a special Phillips screwdriver with a reduced thickness is used. When the cross portion of the Phillips screwdriver is locked in the tool locking hole 21a and rotated counterclockwise toward the screw, the screw portion 22 of the screw 20 is stepped on the spring member 15A engaging portion 16 one by one. It is moved backward while being rotated. At this time, since the spring member 15A is arranged in the box portion 13 of the main body 11 along the lead angle of the screw portion 22, the screw 20 is smoothly rotated and moved in the loosening direction.
[0029]
Accordingly, the locking device 5 of the above configuration is configured and operated so that the screw portion 22 is rotated with a dedicated tool when the screw is inserted and is inserted with one touch.
[0030]
In addition, the locking device 5 of the said form is not restricted above, Another form can be considered. For example, in any case, two spring members 15 can be arranged in parallel with the insertion direction of the screw 20. By arranging two spring members 15 side by side, the engagement with the screw 20 is further ensured. In this case, as a matter of course, the grooves 13b of the protrusion 13a formed in the main body 11 are formed in two places.
[0031]
Further, the screw hole of the packing 6 disposed around the screw 20 is formed so as to be close to the body part of the screw, or the body part 23 of the screw 20 is made slightly larger than the plate thickness of the door 3. Further, the play of the screw 20 attached to the door 3 can be reduced by shortening the whole and lengthening the corresponding screw portion 22.
[0032]
Further, the screw insertion guide portion 12b formed on the flange portion 12 of the main body 11 may have a tapered shape in which no convex portion is formed at the center portion.
[0033]
Further, the main body 11 may be formed in such a shape as shown in the cross-sectional perspective view of FIG.
[0034]
【The invention's effect】
According to the locking device for an electrical wiring box of the present invention, the locking device has a screw receiving portion disposed in the main body box and a screw member disposed in a door disposed to be openable and closable in the main body box. Configured. A plate-like spring member is disposed in the screw receiving body along the lead angle of the screw screw in the screw receiving portion. The spring member is formed with an engaging portion to be engaged with the screw of the screw, and when the screw is inserted into the engaging portion, a plurality of notches are provided so as to have elasticity in the inserting direction of the screw. Are connected. When the door is closed to the main body box, the screw is inserted so as to press around the engagement hole of the spring member, and when the door is opened from the main body box, the screw is loosened by a dedicated tool. Rotate to
[0035]
Therefore, since it can be performed with one touch when the door is closed, it does not take time, and when opening the door, it must be performed with a dedicated tool, which helps to prevent danger.
[0036]
Further, since the insertion guide of the screw member having a central portion formed in a convex shape is formed in the main body box, the screw member can be reliably inserted into the screw receiving portion.
[Brief description of the drawings]
1 is a perspective view showing an electrical wiring box having a locking device according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the locking device in FIG. 1. FIG. 3 is a cross-sectional view showing a screw receiving portion in FIG. FIG. 4 is a cross-sectional view showing a mounting state of the spring member in FIG. 2. FIG. 5 is a view showing one form of the spring member in FIG. 2. FIG. 6 is a view showing another form of the spring member in FIG. 7 is a view showing another form of spring member in FIG. 2. FIG. 8 is a view showing another form of spring member in FIG. 2. FIG. 9 is a view showing another form of spring member in FIG. FIG. 11 is a sectional view of a spring member in FIG. 2. FIG. 11 is a view showing a conventional locking device.
DESCRIPTION OF SYMBOLS 1 ... Electric wiring box 2 ... Main body box 3 ... Door 5 ... Locking device 10 ... Screw receiving part 11 ... Screw receiving part main body 12b ... Screw insertion guide part 15 (15A-15E) ... Spring member 16 ... Engagement part 17 (17a 17c) ... notch hole 18 ... notch surface 20 ... screw 21a ... tool locking part 22 ... screw part 22a ... taper surface

Claims (3)

本体ボックスに配設されるビス受け部と、本体ボックスに開閉可能に配置される扉に配設されるビス部材と、を有し、前記ビス部材を前記ビス受け部に係合させるための電気配線箱の施錠装置であって、
前記ビス受け部が、ビス受け部本体と、前記ビス受け部本体内に配設される板状のばね部材と、有して構成され、
前記ビス受け部本体に、前記ビスが挿入される際の、テーパ状の挿入ガイドが形成され、前記ばね部材が、前記ビスのねじのリード角に沿って前記ビス受け本体に配設されるとともに、前記ばね部材に、前記ビスのねじに齒合される係合部が形成され、前記係合部に、前記ビスが挿入される際、前記ビスの挿入方向に弾性を有するように複数の切欠穴が連接され、
前記ビスを前記係合部に挿入する際、前記ビスを前記ばね部材の係合穴の回りを押圧するように挿入し、前記ビスを前記係合部から離脱する際、前記ビスを緩める方向に回転する、ように作用され
矩形に形成される前記ばね部材の一面に、外方に広がる円弧状の切欠面が形成され、前記複数の切欠穴の内、一個の切欠穴が前記係合部から前記切欠面にかけて形成されていることを特徴とする電気配線箱の施錠装置。
Has a screw receiving portion disposed on the body box, a bis member disposed on the door which is openably disposed in the body box, the electrical for engaging the screw member in the screw receiving portion A wiring box locking device,
The screw receiving portion has a screw receiving portion main body and a plate-like spring member disposed in the screw receiving portion main body.
When the screw is inserted, a tapered insertion guide is formed in the screw receiving portion main body, and the spring member is disposed in the screw receiving portion main body along a lead angle of the screw screw. In addition, the spring member is formed with an engaging portion to be engaged with the screw of the screw, and when the screw is inserted into the engaging portion, the spring member has a plurality of elasticity so as to have elasticity in the inserting direction of the screw. Notch holes are connected,
When inserting the screw into the engaging portion, the screw is inserted so as to press around the engaging hole of the spring member, and when the screw is detached from the engaging portion, the screw is loosened. Rotate, acted like ,
An arcuate cutout surface extending outward is formed on one surface of the spring member formed in a rectangular shape, and one cutout hole is formed from the engagement portion to the cutout surface among the plurality of cutout holes. locking device for an electric distribution box, characterized in that there.
前記ばね部材に形成される係合部が、前記係合部以外の面より反扉側に凹部状に形成されることを特徴とする請求項1記載の電気配線箱の施錠装置。 The spring engaging portion formed on the member, the engagement being formed in a concave shape in the counter-door side of the surface other than the engagement portion, characterized in claim 1 the electrical junction box of the locking device according. 前記ビスの頭部に工具係止部が形成され、前記ビスの下部に、前記本体ボックスの挿入ガイドに対向するテーパ部が形成されることを特徴とする請求項1記載の電気配線箱の施錠装置。 2. The electric wiring box lock according to claim 1 , wherein a tool locking portion is formed at a head of the screw, and a tapered portion is formed at a lower portion of the screw so as to face an insertion guide of the main body box . apparatus.
JP33957396A 1996-12-19 1996-12-19 Electrical wiring box locking device Expired - Fee Related JP3990759B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP33957396A JP3990759B2 (en) 1996-12-19 1996-12-19 Electrical wiring box locking device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP33957396A JP3990759B2 (en) 1996-12-19 1996-12-19 Electrical wiring box locking device

Publications (2)

Publication Number Publication Date
JPH10178707A JPH10178707A (en) 1998-06-30
JP3990759B2 true JP3990759B2 (en) 2007-10-17

Family

ID=18328759

Family Applications (1)

Application Number Title Priority Date Filing Date
JP33957396A Expired - Fee Related JP3990759B2 (en) 1996-12-19 1996-12-19 Electrical wiring box locking device

Country Status (1)

Country Link
JP (1) JP3990759B2 (en)

Also Published As

Publication number Publication date
JPH10178707A (en) 1998-06-30

Similar Documents

Publication Publication Date Title
US5723817A (en) Snap-on wallplate system
US4304958A (en) Electrical outlet box
CA2263027A1 (en) Device for mounting blind
JP3990759B2 (en) Electrical wiring box locking device
DE10324521A1 (en) fuse
US4587391A (en) Snap in panel mounted circuit breaker
JPH0329935Y2 (en)
EP1038343B1 (en) Lead sealable locking device
EP1936744B1 (en) Electric switching device with contact element for mounting on the same
CA2288774C (en) Device for absorbing electric noise
US5857859A (en) Electrical connector having an actuating slide
KR100441850B1 (en) Lock handle device for pullout rotary operation type door
JP3097825B2 (en) Connector device
JPH04177796A (en) Cabinet structure of electronic equipment
US5170424A (en) X-ray film cassette having an easily assembled frame hinge joint
JP2000022346A (en) Locking device of door
JPH11243615A (en) Plate for wiring tool
JPH08105266A (en) Hinge device for distribution board
JPH0230608Y2 (en)
KR940005482Y1 (en) Back door lock device
KR200181404Y1 (en) The handle for used in a switchboard door
JP2002171634A (en) Plate for wiring fittings
KR200217971Y1 (en) Switchboard switchgear
JP2923605B2 (en) Structure to prevent erroneous insertion of fusible link
DE69603819T2 (en) ELECTRICAL CONTROL OR SIGNALING ARRANGEMENT WITH DETACHABLE BLOCK

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20060921

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20061003

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20061127

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20070703

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20070723

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100727

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130727

Year of fee payment: 6

LAPS Cancellation because of no payment of annual fees