JP2007305489A - Electric outlet - Google Patents

Electric outlet Download PDF

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Publication number
JP2007305489A
JP2007305489A JP2006134288A JP2006134288A JP2007305489A JP 2007305489 A JP2007305489 A JP 2007305489A JP 2006134288 A JP2006134288 A JP 2006134288A JP 2006134288 A JP2006134288 A JP 2006134288A JP 2007305489 A JP2007305489 A JP 2007305489A
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Japan
Prior art keywords
plug blade
blade insertion
plug
housing
door body
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JP2006134288A
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Japanese (ja)
Inventor
Satoshi Tanaka
智 田中
Masaru Yoshida
大 吉田
Takeshi Kasahara
健 笠原
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Panasonic Electric Works Co Ltd
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Matsushita Electric Works Ltd
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Priority to JP2006134288A priority Critical patent/JP2007305489A/en
Priority to TW96113797A priority patent/TW200812168A/en
Publication of JP2007305489A publication Critical patent/JP2007305489A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric outlet capable of preventing foreign matter such as dust from entering into a plug blade opening when a plug is not connected thereto while responding to a plug having a grounding electrode. <P>SOLUTION: This electric outlet is provided with a housing 1 equipped with a set of three plug blade insertion openings 10a-10c including one grounding plug blade insertion opening 10c for inserting the plug blade of the grounding electrode therein. A door body 2 having a set of three plug blade insertion holes 20a-20c having sizes corresponding to the plug blade insertion openings 10a-10c is attached to the housing 1. The door body 2 can be rotated with respect to the housing 1 in a plane perpendicular to the insertion direction of the plug blades into the plug blade insertion openings 10a-10c between an open position allowing insertion of the plug blades into the respective plug blade insertion openings 10a-10c by making the plug blade insertion holes 20a-20c communicate with the plug blade insertion openings 10a-10c of the housing 1, and a close position for respectively closing the respective plug blade insertion openings 10a-10c. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、コンセントに関するものである。   The present invention relates to an outlet.

従来から、図９（ａ）（ｂ）に示すように、それぞれプラグの栓刃が挿入される２個１組の栓刃挿入口１０ａ，１０ｂが設けられたハウジング１と、栓刃挿入口１０ａ，１０ｂを開閉する扉体２とを備えるコンセントが提供されている（例えば、特許文献１参照）。   Conventionally, as shown in FIGS. 9 (a) and 9 (b), a housing 1 provided with a pair of plug blade insertion ports 10a and 10b into which plug blades of plugs are respectively inserted, and a plug blade insertion port 10a. , 10b is provided (see, for example, Patent Document 1).

詳しく説明すると、扉体２は、栓刃挿入口１０ａ，１０ｂに対応した寸法形状の２個１組の栓刃挿通穴２０ａ，２０ｂを有し、図９（ｂ）に示すように各栓刃挿通穴２０ａ，２０ｂをそれぞれハウジング１の栓刃挿入口１０ａ，１０ｂに連通させて各栓刃挿入口１０ａ，１０ｂへの栓刃の挿入を可能とする開位置と、図９（ａ）に示すように栓刃挿通穴２０ａ，２０ｂの位置と栓刃挿入口１０ａ，１０ｂの位置とをずらして各栓刃挿入口１０ａ，１０ｂをそれぞれ閉塞する閉位置との間で、栓刃挿入口１０ａ，１０ｂに対する栓刃の挿入方向に直交する面内（図９（ａ）（ｂ）の面内）でハウジング１に対して回動自在に取り付けられている。   More specifically, the door body 2 has a pair of plug blade insertion holes 20a and 20b each having a size and shape corresponding to the plug blade insertion ports 10a and 10b. As shown in FIG. FIG. 9 (a) shows an open position in which the insertion holes 20a and 20b are respectively communicated with the blade insertion holes 10a and 10b of the housing 1 so that the blades can be inserted into the blade insertion holes 10a and 10b. In this way, the blade insertion holes 10a, 10b are closed between the closed positions where the blade insertion holes 10a, 10b are closed by shifting the positions of the blade insertion holes 20a, 20b and the blade insertion holes 10a, 10b. It is rotatably attached to the housing 1 in a plane perpendicular to the insertion direction of the plug blade with respect to 10b (in the planes of FIGS. 9A and 9B).

上記従来例によれば、プラグが接続されていないときには扉体２が閉位置に維持されるようにしておけば、栓刃挿入口１０ａ，１０ｂに入り込む埃等の異物を扉体２によって阻止することができる。また、プラグを接続する際には、扉体２をハウジング１に対して矢印Ａ２で示すように回動させれば、栓刃挿通穴２０ａ，２０ｂを通じて栓刃挿入口１０ａ，１０ｂに栓刃を挿入することができるようになる。
特開平６−５２９２６号公報 According to the above conventional example, if the door body 2 is maintained in the closed position when the plug is not connected, foreign matter such as dust entering the plug blade insertion openings 10a and 10b is blocked by the door body 2. be able to. When connecting the plug, if the door body 2 is rotated with respect to the housing 1 as indicated by the arrow A2, the plug blade is inserted into the plug blade insertion openings 10a and 10b through the plug blade insertion holes 20a and 20b. Be able to insert.
JP-A-6-52926

しかし、接地極を有するプラグに対応したコンセントであって上記のような扉体２を備えるものは提供されていなかった。   However, an outlet corresponding to a plug having a grounding electrode and provided with the door body 2 as described above has not been provided.

本発明は上記事由に鑑みて為されたものであり、その目的は、接地極を有するプラグに対応しながらも、プラグが接続されていない状態で栓刃挿入口に埃等の異物が入り込むことを防ぐことができるコンセントを提供することにある。   The present invention has been made in view of the above-described reasons, and its purpose is to allow foreign matters such as dust to enter the plug blade insertion opening while the plug is not connected while corresponding to a plug having a ground electrode. It is to provide an outlet that can prevent.

請求項１の発明は、接地極の栓刃が挿入される１個の接地栓刃挿入口を含む３個１組の栓刃挿入口が設けられたハウジングと、栓刃挿入口に対応した寸法形状の３個１組の栓刃挿通穴が設けられ、栓刃挿通穴をハウジングの栓刃挿入口に連通させて各栓刃挿入口への栓刃の挿入を可能とする開位置と、各栓刃挿入口をそれぞれ閉塞する閉位置との間で、栓刃挿入口に対する栓刃の挿入方向に直交する面内でハウジングに対して回動自在に取り付けられた扉体とを備えることを特徴とする。   The invention according to claim 1 is a housing provided with a set of three plug blade insertion ports including one ground plug blade insertion port into which a plug blade of a ground electrode is inserted, and dimensions corresponding to the plug blade insertion port. A set of three shaped blade insertion holes, each having an open position that allows insertion of the blade into each blade insertion port by communicating the blade insertion hole with the blade insertion port of the housing, And a door body rotatably attached to the housing in a plane orthogonal to the insertion direction of the plug blade with respect to the plug blade insertion port between the closed positions for closing the plug blade insertion ports. And

この発明によれば、プラグが接続されていないときに栓刃挿入口に埃等の異物が入り込むことを、扉体によって防ぐことができる。また、接地栓刃挿入口を有することにより、接地極の栓刃を有するプラグを接続することができる。   According to this invention, when the plug is not connected, foreign matter such as dust can be prevented from entering the plug blade insertion opening by the door body. Further, by having the ground plug blade insertion port, it is possible to connect a plug having a ground electrode plug blade.

請求項２の発明は、請求項１の発明において、閉位置において各栓刃挿通穴の位置はそれぞれ対応する栓刃挿入口の位置に対して栓刃挿入方向から見て時計回り方向又は反時計回り方向の一方側に９０°未満の角度だけずれていることを特徴とする。   According to a second aspect of the present invention, in the first aspect of the present invention, in the closed position, the position of each plug blade insertion hole is clockwise or counterclockwise as viewed from the plug blade insertion direction with respect to the corresponding position of the plug blade insertion port. It is characterized by being shifted by an angle of less than 90 ° to one side in the rotational direction.

この発明によれば、閉位置と開位置との間での扉体の回動角度が９０°未満となるから、例えば閉位置において各栓刃挿通穴の位置をそれぞれ対応する栓刃挿入口の位置に対して栓刃挿入方向から見て１８０°反転させる場合に比べ、プラグを接続する際の扉体の回動角度が小さくてすむ。   According to this invention, since the rotation angle of the door body between the closed position and the open position is less than 90 °, for example, the position of each plug blade insertion hole in the closed position is set to the corresponding plug blade insertion opening. The rotation angle of the door body when connecting the plug is smaller than in the case where the position is reversed by 180 ° with respect to the position when viewed from the direction of inserting the blade.

請求項３の発明は、請求項２の発明において、ハウジングは所定の向きで固定されるものであって、栓刃挿入口のうち電圧側極の栓刃が挿入される電圧側栓刃挿入口と接地側極の栓刃が挿入される接地側栓刃挿入口とは互いに上下に並べて配置されていることを特徴とする。   According to a third aspect of the present invention, in the second aspect of the invention, the housing is fixed in a predetermined direction, and the voltage side plug blade insertion port into which the plug blade of the voltage side electrode is inserted among the plug blade insertion ports. And the ground-side plug blade insertion opening into which the ground-side plug blade is inserted are arranged side by side with each other.

この発明によれば、電圧側栓刃挿入口と接地側栓刃挿入口とを斜めに並べる場合に比べ、使用者にとって扉体の開位置の向きが分かりやすいから、扉体を過剰に回動させる力が加えられにくい。   According to the present invention, compared with the case where the voltage side plug blade insertion opening and the ground side plug blade insertion opening are arranged obliquely, the direction of the open position of the door body is easy for the user to understand, so the door body is excessively rotated. It is difficult to apply force to make.

本発明は、接地極の栓刃が挿入される１個の接地栓刃挿入口を含む３個１組の栓刃挿入口が設けられたハウジングと、栓刃挿入口に対応した寸法形状の３個１組の栓刃挿通穴が設けられ、栓刃挿通穴をハウジングの栓刃挿入口に連通させて各栓刃挿入口への栓刃の挿入を可能とする開位置と、各栓刃挿入口をそれぞれ閉塞する閉位置との間で、栓刃挿入口に対する栓刃の挿入方向に直交する面内でハウジングに対して回動自在に取り付けられた扉体とを備えるので、プラグが接続されていないときに栓刃挿入口に埃等の異物が入り込むことを、扉体によって防ぐことができる。また、接地栓刃挿入口を有することにより、接地極の栓刃を有するプラグを接続することができる。   The present invention includes a housing provided with a set of three plug blade insertion ports including one ground plug blade insertion port into which a plug blade of a ground electrode is inserted, and a size 3 corresponding to the plug blade insertion port. One set of plug blade insertion holes is provided, and the plug blade insertion holes are communicated with the plug blade insertion holes of the housing to enable insertion of the blades into the respective blade insertion holes, and the insertion of the respective blades. A plug is connected to the closed position that closes each of the mouths, and a door body that is rotatably attached to the housing in a plane perpendicular to the direction of insertion of the blade to the blade insertion port. The door body can prevent foreign matters such as dust from entering the plug blade insertion opening when the door is not in use. Further, by having the ground plug blade insertion port, it is possible to connect a plug having a ground electrode plug blade.

以下、本発明を実施するための最良の形態について、図面を参照しながら説明する。   The best mode for carrying out the present invention will be described below with reference to the drawings.

本実施形態は、図４に示すように、接地極の栓刃（図示せず）が挿入される１個の接地栓刃挿入口１０ｃを含む３個１組の栓刃挿入口１０ａ〜１０ｃが設けられたハウジング１と、図１（ａ）及び図２（ａ）及び図３（ａ）に示すように栓刃挿入口を閉塞する閉位置と、図１（ｂ）及び図２（ｂ）に示すように栓刃挿入口を開放する開位置との間でハウジングに対して回動自在に取り付けられた扉体２とを備える。以下、上下左右は図１（ａ）を基準とし、図１（ａ）における紙面手前方向を前方向と呼ぶ。   In the present embodiment, as shown in FIG. 4, a set of three plug blade insertion ports 10 a to 10 c including one ground plug blade insertion port 10 c into which a plug blade (not shown) of a ground electrode is inserted is provided. The housing 1 provided, a closed position for closing the plug blade insertion opening as shown in FIGS. 1 (a), 2 (a) and 3 (a), and FIGS. 1 (b) and 2 (b). And a door body 2 that is rotatably attached to the housing between the open position where the plug blade insertion opening is opened. Hereinafter, the top, bottom, left, and right are based on FIG. 1A, and the front side in FIG. 1A is referred to as the front direction.

詳しく説明すると、ハウジング１は、図４に示すように、充電部である後述する端子ブロック５ａ〜５ｃを収納する収納凹部３０が前面に開口したボディ３と、栓刃挿入口１０ａ〜１０ｃが前後に貫設されボディ３の前側に結合して収納凹部３０を覆うカバー４とを備える。カバー４は、栓刃挿入口１０ａ〜１０ｃが設けられたボス部４１と、ボス部４１の左右両側にそれぞれ設けられ前面がボス部４１の前面よりも後側に位置する取付部４２とを有する。ボディ３とカバー４とは、栓刃挿入口１０ａ〜１０ｂの左右にそれぞれ取り付けられた組立金具１１によって互いに結合している。組立金具１１は、ハウジング１の前側に位置する本体部１１ａと、本体部１１ａの上下両端部からそれぞれ後方へ突設された腕部１１ｂとを有する。カバー４の取付部４２の上下両面と、ボディ３の上下両面の左右両端部とには、それぞれ前後に開放されてカバー４とボディ３とで互いに連通する組立溝４２ａ，３２ａが設けられており、各組立金具１１の各腕部１１ｂはそれぞれ一部が組立溝４２ａ，３２ａに収納される。また、各腕部１１ｂの後端部はそれぞれ二又に分かれており、ボディ３の組立溝３２ａの後側において組立金具１１の腕部１１ｂの後端部を左右に広げることによって組立金具１１はハウジング１の前方への脱落を防止され、ここにおいてボディ３とカバー４とは互いに結合する。ここで、ハウジング１は、ＪＩＳに規定された配線器具の単位寸法に形成されており、各組立金具１１の本体部１１ａには、それぞれ大角連用形の取付枠に設けられているのと同様の取付穴（図示せず）に係入する２個の組立片１１ｃが、上下に並べて左右方向の外側へ突設されている。すなわち、本実施形態は、既存の取付枠への配線器具の取付と同様にして、例えば洗面化粧台などの住設機器に、上下を図１（ａ）に示す向きとして固定される。   More specifically, as shown in FIG. 4, the housing 1 has a body 3 in which a housing recess 30 for housing terminal blocks 5 a to 5 c, which will be described later, which is a charging unit, and a plug blade insertion port 10 a to 10 c are front and rear. And a cover 4 that covers the housing recess 30 by being coupled to the front side of the body 3. The cover 4 includes a boss portion 41 provided with the plug blade insertion ports 10 a to 10 c and an attachment portion 42 provided on each of the left and right sides of the boss portion 41 and having a front surface located behind the front surface of the boss portion 41. . The body 3 and the cover 4 are connected to each other by assembly fittings 11 attached to the left and right of the plug blade insertion ports 10a to 10b. The assembly metal fitting 11 has a main body portion 11a located on the front side of the housing 1 and arm portions 11b protruding rearward from both upper and lower end portions of the main body portion 11a. Assembly grooves 42 a and 32 a that are opened forward and backward and communicate with each other between the cover 4 and the body 3 are provided on both the upper and lower surfaces of the mounting portion 42 of the cover 4 and the left and right ends of the upper and lower surfaces of the body 3. A part of each arm portion 11b of each assembly metal fitting 11 is accommodated in each of the assembly grooves 42a and 32a. Further, the rear end portion of each arm portion 11b is divided into two parts, and the assembly bracket 11 is formed by spreading the rear end portion of the arm portion 11b of the assembly bracket 11 left and right on the rear side of the assembly groove 32a of the body 3. The housing 1 is prevented from falling off to the front, where the body 3 and the cover 4 are coupled to each other. Here, the housing 1 is formed in the unit dimensions of the wiring device specified by JIS, and the main body 11a of each assembly metal fitting 11 is attached in the same manner as that provided on the large-frame continuous attachment frame. Two assembly pieces 11c engaged with holes (not shown) are arranged vertically and project outward in the left-right direction. That is, this embodiment is fixed to a housing equipment such as a vanity, for example, in the same direction as shown in FIG.

栓刃挿入口１０ａ〜１０ｃには、接地栓刃挿入口１０ｃの他、電圧側極の栓刃（図示せず）が挿入される電圧側栓刃挿入口１０ａと、接地側極の栓刃（図示せず）接地側栓刃挿入口１０ｂとがあり、電圧側栓刃挿入口１０ａと接地側栓刃挿入口１０ｂとは上下に並べて設けられ、それぞれ接地栓刃挿入口１０ｃの右側に位置している。本実施形態は、１５Ａ１２５Ｖ用のプラグに対応しており、電圧側栓刃挿入口１０ａと接地側栓刃挿入口１０ｂとはそれぞれ左右に長い長方形状となっている。   In addition to the ground plug blade insertion port 10c, the voltage blade plug insertion port 10a into which the voltage side electrode plug blade (not shown) is inserted, and the ground blade electrode plug blade ( There is a grounding-side plug blade insertion port 10b, and the voltage-side plug blade insertion port 10a and the grounding-side plug blade insertion port 10b are provided side by side, and are located on the right side of the grounding plug blade insertion port 10c, respectively. ing. This embodiment corresponds to a plug for 15A125V, and the voltage-side plug blade insertion port 10a and the ground-side plug blade insertion port 10b each have a rectangular shape that is long to the left and right.

収納凹部３０には、栓刃挿入口１０ａ〜１０ｃから挿入された栓刃に接触導通する３個の端子ブロック５ａ〜５ｃが収納されている。そして、ボディ３０には、収納凹部３０を左右に仕切る絶縁壁３１が設けられている。端子ブロック５ａ〜５ｃのうち、接地栓刃挿入口１０ｃから挿入された栓刃を刃受け部５１に挟持する（すなわち、接地栓刃挿入口１０ｃに対応した）接地端子ブロック５ｃは絶縁壁３１の左側に収納され、電圧側栓刃挿入口１０ａに対応した電圧側端子ブロック５ａと接地側栓刃挿入口１０ｂに対応した接地側端子ブロック５ｂとは絶縁壁３１の右側において上下に並べて配置されている。また、絶縁壁３１の右面には、電圧側端子ブロック５ａと接地側端子ブロック５ｂとの間に位置してこれら端子ブロック５ａ，５ｂ間の絶縁を確保する仕切り部３１ａが上下の中央部から右方へ突設されている。   In the storage recess 30, three terminal blocks 5a to 5c that are brought into contact with the plug blades inserted from the plug blade insertion ports 10a to 10c are stored. The body 30 is provided with an insulating wall 31 that partitions the storage recess 30 into the left and right. Among the terminal blocks 5 a to 5 c, the ground terminal block 5 c that sandwiches the plug blade inserted from the ground plug blade insertion port 10 c with the blade receiving portion 51 (that is, corresponding to the ground plug blade insertion port 10 c) is formed on the insulating wall 31. The voltage-side terminal block 5a corresponding to the voltage-side plug blade insertion port 10a and the ground-side terminal block 5b corresponding to the ground-side plug blade insertion port 10b are arranged side by side on the right side of the insulating wall 31. Yes. Further, on the right surface of the insulating wall 31, a partition portion 31a that is located between the voltage side terminal block 5a and the ground side terminal block 5b and secures insulation between the terminal blocks 5a and 5b is located on the right side from the upper and lower central portions. It protrudes toward the direction.

各端子ブロック５ａ〜５ｃは、それぞれ、例えば金属板に打ち抜き加工と曲げ加工とが施されてなり、対応する栓刃挿入口１０ａ〜１０ｃから挿入された栓刃を上下から弾性的に挟持する刃受け部５１と、上方から見て後側に開口したコ字形状の端子部５２とを有する。接地栓刃挿入口１０ｃから挿入された栓刃を刃受け部５１に挟持する（すなわち、接地栓刃挿入口１０ｃに対応した）接地端子ブロック５ｃには、端子部５２が上下に並べて２個設けられている。各端子部５２の内側には、それぞれ端子部５２とともに周知の速結端子を構成する鎖錠ばね６が配置されている。各鎖錠ばね６は、それぞれ、例えば金属板に曲げ加工を施すことにより形成され、端子部５２の左右のうち内側の内面に接触する本体部６１と、本体部６１の後端部から左右方向の外側に突設され先端に向かって前方へ傾斜した鎖錠部６２と、本体部６１の前端部から左右方向の外側に突設され全体としてＳ字形状の押付け部６３とを有する。図３（ｄ）に示すように、ボディ３において各鎖錠部６２の後側には、それぞれ電線（図示せず）が挿入される電線挿入穴１２ａ〜１２ｃが前後に貫設されている。すなわち、電線挿入穴１２ａ〜１２ｃから挿入された電線は、鎖錠部６２の先端が食い込む（すなわち、鎖錠部６２に鎖錠される）ことによって抜け止めされるとともに、押付け部６３によって端子部５２の内面に押し付けられる。ここで、接地端子ブロック５ｃに対応した電線挿入穴１２ｃは２個設けられており、一方を送り配線に用いることができる。さらに、収納凹部３０の左右両端部には、それぞれ例えば合成樹脂のような絶縁材料からなる解除釦７が収納されている。各解除釦７は、上下の端部がそれぞれ鎖錠ばね６の鎖錠部６２の後側に位置している。さらに、ボディ３において各解除釦７の後側には、それぞれ解除穴１３が前後に貫設されている。電線挿入穴１２ａ〜１２ｃに挿入された電線を抜くには、解除穴１３から例えばマイナスドライバのような治具（図示せず）を挿入して解除釦７を押し込む。すると、解除釦７の後側に位置する２個の鎖錠ばね６がそれぞれ鎖錠部６２を解除釦７に押圧されて弾性変形し、鎖錠が解除されて電線を抜くことができる。つまり、電圧側端子ブロック５ａの端子部５２と接地側端子ブロック５ｂの端子部５２とでは右側の解除釦７によって、接地端子ブロック５ｃの２個の端子部５２では左側の解除釦７によって、それぞれ同時に鎖錠を解除される。   Each of the terminal blocks 5a to 5c is formed by punching and bending a metal plate, for example, and blades that elastically hold the plug blades inserted from the corresponding plug blade insertion ports 10a to 10c from above and below. It has a receiving portion 51 and a U-shaped terminal portion 52 opened to the rear side when viewed from above. The grounding terminal block 5c that sandwiches the plug blade inserted from the ground plug blade insertion port 10c with the blade receiving portion 51 (that is, corresponding to the ground plug blade insertion port 10c) is provided with two terminal portions 52 arranged vertically. It has been. Inside each terminal part 52, the lock spring 6 which comprises a well-known quick connection terminal with the terminal part 52 is arrange | positioned, respectively. Each lock spring 6 is formed, for example, by bending a metal plate, and a body part 61 that contacts the inner inner surface of the left and right sides of the terminal part 52 and a left-right direction from the rear end part of the body part 61. A locking part 62 that protrudes outside and tilts forward toward the tip, and an S-shaped pressing part 63 that protrudes outward from the front end of the main body 61 in the left-right direction. As shown in FIG. 3D, on the rear side of each locking portion 62 in the body 3, electric wire insertion holes 12a to 12c into which electric wires (not shown) are respectively inserted are penetrated in the front-rear direction. That is, the electric wires inserted from the electric wire insertion holes 12a to 12c are prevented from coming off when the tip of the locking part 62 bites in (that is, locked to the locking part 62), and the terminal part is pressed by the pressing part 63. It is pressed against the inner surface of 52. Here, two wire insertion holes 12c corresponding to the ground terminal block 5c are provided, and one of them can be used for the feed wiring. Furthermore, release buttons 7 made of an insulating material such as synthetic resin are accommodated in the left and right ends of the accommodation recess 30. Each release button 7 has its upper and lower ends positioned on the rear side of the lock portion 62 of the lock spring 6. Further, on the rear side of each release button 7 in the body 3, release holes 13 are provided in the front-rear direction. In order to remove the electric wires inserted into the electric wire insertion holes 12a to 12c, a jig (not shown) such as a minus driver is inserted from the release hole 13 and the release button 7 is pushed. Then, the two lock springs 6 positioned on the rear side of the release button 7 are respectively elastically deformed by pressing the lock portion 62 against the release button 7, and the lock is released and the electric wire can be pulled out. That is, the terminal portion 52 of the voltage-side terminal block 5a and the terminal portion 52 of the ground-side terminal block 5b each have a release button 7 on the right side, and the two terminal portions 52 of the ground-terminal block 5c have a release button 7 on the left side. At the same time, the lock is released.

以下、本実施形態の要部たる扉体２について説明する。扉体２は、厚さ方向を前後方向に向けた円盤形状の本体部２ａと、本体部２ａの中央部から後方に突設された軸部（図示せず）とを有する。扉体２の本体部２ａには、栓刃挿入口１０ａ〜１０ｃと略同じ寸法形状及び配置で、プラグの栓刃が挿通される栓刃挿通穴２０ａ〜２０ｃが前後に貫設されている。   Hereinafter, the door body 2 as a main part of the present embodiment will be described. The door body 2 includes a disk-shaped main body 2a whose thickness direction is directed in the front-rear direction, and a shaft (not shown) projecting rearward from the center of the main body 2a. The main body 2a of the door body 2 has front and rear plug blade insertion holes 20a to 20c through which the plug blades of the plug are inserted with the same size and shape as the plug blade insertion ports 10a to 10c.

また、カバー４において栓刃挿入口１０ａ〜１０ｃに囲まれた中央部には、扉体２の軸部が挿通される軸受け穴４０が前後に貫設されている。扉体２は、軸受け穴４０に軸部を挿通されるとともに、外径が軸受け穴４０の開口の径よりも大きく中央に鋲挿通穴２１ａが貫設された円板形状の押さえ板２１が、鋲挿通穴２１ａに挿通されて軸部に打ち込まれる鋲２２によって軸部の後端に固定されることにより、カバー４に対して前方から見た面内で回動自在に取り付けられている。   Further, a bearing hole 40 through which the shaft portion of the door body 2 is inserted is provided in the front and rear in the center portion of the cover 4 surrounded by the plug blade insertion openings 10a to 10c. The door body 2 has a disc-shaped pressing plate 21 having a shaft portion inserted through the bearing hole 40 and an outer diameter larger than the diameter of the opening of the bearing hole 40 and having a flange insertion hole 21a penetrating in the center. By being fixed to the rear end of the shaft portion by a flange 22 inserted into the flange insertion hole 21a and driven into the shaft portion, the cover 4 is attached to the cover 4 so as to be rotatable in a plane viewed from the front.

さらに、カバー４においてボス部４１の前面の上端には、円弧形状の制限凹部４１ａが設けられている。扉体２の本体部２ａの上端部の後面には被制限突起２ｃが後方へ突設されており、被制限突起２ｃが制限凹部４１ａの左右の内面に当接することにより、ハウジング１に対する扉体２の回動範囲が制限されている。ハウジング１に対する扉体２の回動範囲は、図１（ａ）及び図２（ａ）に示すように閉位置に対して反時計回りに回動して栓刃挿通穴２０ａ〜２０ｃの位置を栓刃挿入口１０ａ〜１０ｃの位置に対して反時計回りにずらして栓刃挿入口１０ａ〜１０ｃを閉塞する閉位置から、図１（ｂ）及び図２（ｂ）に示すように閉位置から矢印Ａ１で示すように時計回りに回動して栓刃挿通穴２０ａ〜２０ｃと栓刃挿入口１０ａ〜１０ｃとを連通させる開位置までとなっている。本実施形態では、閉位置と開位置との間の扉体２の回動角度は５５°となっているが、本実施形態の閉位置から±１０°の範囲内であっても栓刃挿入口１０ａ〜１０ｃは扉体２によって覆われる。   Further, an arc-shaped limiting recess 41 a is provided at the upper end of the front surface of the boss 41 in the cover 4. A restricted projection 2c protrudes rearward from the rear surface of the upper end portion of the main body 2a of the door body 2, and the restricted projection 2c contacts the left and right inner surfaces of the restricted recess 41a, so that the door body with respect to the housing 1 is provided. The rotation range of 2 is limited. As shown in FIGS. 1 (a) and 2 (a), the range of rotation of the door body 2 relative to the housing 1 rotates counterclockwise with respect to the closed position so that the positions of the plug blade insertion holes 20a to 20c are set. From the closed position where the blade insertion holes 10a to 10c are closed by shifting counterclockwise with respect to the position of the blade insertion holes 10a to 10c, from the closed position as shown in FIGS. 1 (b) and 2 (b). As shown by the arrow A1, the blade blades rotate clockwise and reach the open position where the plug blade insertion holes 20a to 20c communicate with the plug blade insertion ports 10a to 10c. In the present embodiment, the rotation angle of the door body 2 between the closed position and the open position is 55 °, but the plug blade is inserted even within the range of ± 10 ° from the closed position of the present embodiment. The mouths 10 a to 10 c are covered with the door body 2.

また、軸受け穴４０には、扉体２の軸部が挿通され一端がカバー４に連結されて他端が扉体２に連結されたねじりコイルばねからなり扉体２を閉位置に復帰させる復帰ばね２３が収納されている。すなわち、プラグが接続されていないときには、復帰ばね２３のばね力により扉体２は閉位置に維持されるのであり、プラグを抜いた後に手動操作で扉体２を閉位置に戻す必要がない。   Further, the shaft hole of the door body 2 is inserted into the bearing hole 40, and one end is connected to the cover 4, and the other end is connected to the door body 2. The return is for returning the door body 2 to the closed position. The spring 23 is accommodated. That is, when the plug is not connected, the door body 2 is maintained in the closed position by the spring force of the return spring 23, and there is no need to manually return the door body 2 to the closed position after the plug is removed.

上記構成によれば、プラグが接続されていないときには、栓刃挿入口１０ａ〜１０ｃへの埃等の異物が、扉体２によって阻止される。また、接地栓刃挿入口１０ｃを有することにより、接地極の栓刃を有するプラグに対応している。さらに、電圧側栓刃挿入口１０ａと接地側栓刃挿入口１０ｂとが上下に並べて設けられていることにより、電圧側栓刃挿入口１０ａと接地側栓刃挿入口１０ｂとが斜めに並べて設けられる場合に比べ、使用者にとって扉体２の開位置の向きが分かりやすいから、扉体２を過剰に回動させる力が加えられにくい。   According to the above configuration, when the plug is not connected, foreign matter such as dust to the plug blade insertion ports 10 a to 10 c is blocked by the door body 2. Further, by having the grounding plug blade insertion port 10c, it corresponds to a plug having a grounding electrode blade. Further, the voltage side plug blade insertion port 10a and the ground side plug blade insertion port 10b are provided side by side so that the voltage side plug blade insertion port 10a and the ground side plug blade insertion port 10b are provided obliquely. Compared with the case where it is possible, since it is easy for a user to understand the direction of the open position of the door body 2, the force which rotates the door body 2 excessively is hard to be added.

ここで、閉位置を、図５（ｂ）に示すように開位置に対して１８０度回動した位置としたり、図５（ｃ）に示すように開位置に対して時計回りに回動した位置としても、扉体２によって栓刃挿入口１０ａ〜１０ｃを覆うことはできる。しかし、閉位置は図５（ａ）に示す本実施形態のように開位置に対して反時計回りに回動させた位置とするほうが、図５（ｂ）の場合に比べて回動角度が小さくなり、図５（ｃ）の場合に比べて右利きの人間にとって操作しやすくなるから望ましい。   Here, the closed position is a position rotated 180 degrees with respect to the open position as shown in FIG. 5 (b), or is rotated clockwise with respect to the open position as shown in FIG. 5 (c). Even in terms of position, the door blade 2 can cover the plug blade insertion openings 10a to 10c. However, the closed position is set to a position rotated counterclockwise with respect to the open position as in the present embodiment shown in FIG. 5A, as compared with the case of FIG. 5B. This is desirable because it is smaller and easier to operate for a right-handed person than in the case of FIG.

本実施形態のハウジング１の前面は、図６（ａ）に示すように化粧カバー８によって覆われる。図６（ｂ）の例では、押釦ハンドル１４によって操作される押釦スイッチ（図示せず）が本実施形態の右側に並べて配設されている。化粧カバー８には、それぞれ円形状の窓穴８１ａが左右に並べて２個、それぞれ前後に貫設されており、左側の窓穴８１ａからは扉体２が露出し、右側の窓穴８１ａからは押釦ハンドル１４を露出する。ここで、本実施形態の扉体２は、図６（ｂ）に示す従来の扉体２よりも大きくなっているから、前方から見て押釦ハンドル１４の寸法形状と扉体２の寸法形状とを同じとして統一性のある外観とした場合、本実施形態のほうが押釦ハンドル１４が大きくなって操作しやすくなる。   The front surface of the housing 1 of the present embodiment is covered with a decorative cover 8 as shown in FIG. In the example of FIG. 6B, push button switches (not shown) operated by the push button handle 14 are arranged side by side on the right side of the present embodiment. The decorative cover 8 is provided with two circular window holes 81a arranged side by side on the left and right sides, respectively, and the door body 2 is exposed from the left window hole 81a, and from the right window hole 81a. The push button handle 14 is exposed. Here, since the door body 2 of this embodiment is larger than the conventional door body 2 shown in FIG. 6B, the dimension shape of the push button handle 14 and the dimension shape of the door body 2 as viewed from the front. In the present embodiment, the push button handle 14 is larger and easier to operate.

ここで、プラグが接続されていないときに栓刃挿入口１０ａ〜１０ｃに埃等の異物が入ることを防ぐ方法としては、上記のような扉体２を設けるという方法のほか、化粧カバー８として、図７（ａ）（ｂ）に示すように、カバー本体８１と、カバー本体８１に対して栓刃挿入口１０ａ〜１０ｃを開放する開位置と栓刃挿入口１０ａ〜１０ｃを覆う閉位置との間で変位自在に取り付けられたカバー扉８２とを有する化粧カバー８を用いるという方法もある。カバー本体８１及びカバー扉８２はそれぞれ例えば合成樹脂成型品からなる。   Here, as a method for preventing foreign matter such as dust from entering the plug blade insertion openings 10a to 10c when the plug is not connected, the decorative cover 8 can be used in addition to the method of providing the door body 2 as described above. 7 (a) and 7 (b), the cover main body 81, an open position for opening the plug blade insertion ports 10a to 10c with respect to the cover main body 81, and a closed position for covering the plug blade insertion ports 10a to 10c. There is also a method of using a decorative cover 8 having a cover door 82 mounted so as to be freely displaceable between the two. Each of the cover main body 81 and the cover door 82 is made of a synthetic resin molded product, for example.

詳しく説明すると、カバー本体８１は、扉体２が挿通される窓穴８１ａが中央部に前後に貫設された長円形状に形成されている。カバー本体８１の前面において窓穴８１ａの上側には、軸受け部８１ｂが前方に突設されている。カバー扉８２は、長方形状であって一端部（図７（ａ）における上端部）に設けられた凹部８２ｂに軸受け部８１ｂを収納するようにして軸受け部８１ｂに枢着されている。これにより、カバー扉８２は、カバー本体８１に対し、図７（ａ）に示すように扉体２を覆う閉位置と、閉位置における上端部を中心として下端部を右方向から見て時計回りに回動させて図７（ｂ）に示すように扉体２を露出させる開位置との間で変位自在となっている。カバー扉８２の閉位置における後面には凹部８２ａが設けられており、窓穴８１ａを通じてカバー本体８１の前面より前方に突出した扉体２は、凹部８２ａに収納される。また、カバー本体８１の前面において窓穴８１ａの下側には係止突起８１ｃが前方へ突設されている。カバー扉８２の閉位置での下端部には、先部が閉位置での後方へ曲がった被掛止突起８２ｃが下方へ突設されている。カバー扉８２が閉位置にあるときには、被係止突起８２ｃが係止突起８１ｃに係止されることによりカバー扉８２は閉位置に維持され、衝撃などによって勝手にカバー扉８２が開くことが防止されている。   If it demonstrates in detail, the cover main body 81 is formed in the ellipse shape by which the window hole 81a in which the door body 2 is penetrated was penetrated in the center part. On the front surface of the cover main body 81, a bearing portion 81b projects forward from the upper side of the window hole 81a. The cover door 82 has a rectangular shape and is pivotally attached to the bearing portion 81b so that the bearing portion 81b is accommodated in a concave portion 82b provided at one end portion (the upper end portion in FIG. 7A). As a result, the cover door 82 rotates clockwise with respect to the cover body 81 as shown in FIG. 7A, with the closed position covering the door body 2 and the lower end portion viewed from the right with the upper end portion at the closed position as the center. It is freely displaceable between the open position where the door body 2 is exposed as shown in FIG. A recess 82a is provided on the rear surface of the cover door 82 in the closed position, and the door body 2 protruding forward from the front surface of the cover body 81 through the window hole 81a is accommodated in the recess 82a. Further, a locking projection 81c is projected forward from the front surface of the cover body 81 below the window hole 81a. At the lower end portion of the cover door 82 in the closed position, a hooking projection 82c whose front portion is bent rearward in the closed position protrudes downward. When the cover door 82 is in the closed position, the locked projection 82c is locked to the locking projection 81c, so that the cover door 82 is maintained in the closed position, and the cover door 82 is prevented from being opened arbitrarily by an impact or the like. Has been.

また、化粧カバー８の構造は上記のようにカバー扉８２がカバー本体８１に対して回動するものに限られず、図８（ａ）（ｂ）に示すように、カバー扉８２がカバー本体８１に対してスライドするものであってもよい。図８（ａ）（ｂ）の例について詳しく説明すると、カバー本体８１の前面において窓穴８１ａの上下両側には、それぞれ左右に長いガイド凸部８１ｄが前方へ突設されている。カバー扉８２の上下両端部には、それぞれガイド凸部８１ｄの上下方向のうち外側に位置する被ガイド凸部８２ｄが後方へ突設されている。各ガイド凸部８１ｄの上下のうち外側の面には、それぞれガイド溝８１ｅが設けられており、被ガイド凸部８２ｄの上下のうち内側の面に突設された被ガイド突起（図示せず）がガイド溝８１ｅに係入することにより、カバー扉８２はカバー本体８１の前方への脱落を防止され、カバー本体８１に対して左右にスライド可能となっている。また、カバー本体８１に対するカバー扉８２の可動範囲は、被ガイド突起がガイド溝８１ｅの右端に位置して図８（ａ）に示すように扉体２がカバー扉８２に覆われる閉位置から、被ガイド突起がガイド溝８１ｅの左端に位置して図８（ｂ）に示すように扉体２が露出する開位置までとなっている。また、ガイド溝８１ｅの底面の右端部には、係止突起８１ｆが上方へ突設されており、閉位置では被ガイド突起が係止突起８１ｆに係止されることにより、カバー扉８２が勝手に開くことが防止されている。さらに、カバー扉８２を操作しやすいように、カバー扉８２の前面には、滑り止めのためにそれぞれ上下に長い複数本（図では５本）の滑り止め突起８２ｅが左右に並べて前方へ突設されている。また、カバー扉８２の前面には、カバー扉８２が開く方向を示す左向きの三角形状の表示凹部８２ｆが設けられている。   Further, the structure of the decorative cover 8 is not limited to the structure in which the cover door 82 rotates with respect to the cover main body 81 as described above, and the cover door 82 is formed of the cover main body 81 as shown in FIGS. It may slide with respect to. 8 (a) and 8 (b) will be described in detail. On the front surface of the cover main body 81, guide protrusions 81d that are long on the left and right are provided on the upper and lower sides of the window hole 81a. At both the upper and lower end portions of the cover door 82, guided convex portions 82d that are located on the outer side in the vertical direction of the guide convex portions 81d are protruded rearward. Guide grooves 81e are respectively provided on the outer surfaces of the upper and lower sides of each guide convex portion 81d, and guided projections (not shown) are provided so as to protrude from the upper and lower surfaces of the guided convex portion 82d. Is engaged with the guide groove 81e, so that the cover door 82 is prevented from falling forward with respect to the cover main body 81, and can slide to the left and right with respect to the cover main body 81. Further, the movable range of the cover door 82 with respect to the cover body 81 is such that the guided projection is located at the right end of the guide groove 81e and the door body 2 is covered with the cover door 82 as shown in FIG. The guided projection is located at the left end of the guide groove 81e and reaches the open position where the door body 2 is exposed as shown in FIG. 8B. Further, a locking projection 81f protrudes upward from the right end of the bottom surface of the guide groove 81e. When the guided projection is locked by the locking projection 81f in the closed position, the cover door 82 is free. Opening is prevented. Further, in order to make the cover door 82 easy to operate, a plurality of anti-slip protrusions 82e (5 in the figure) that are long in the vertical direction are provided on the front surface of the cover door 82 so as to protrude forward in the left-right direction. Has been. Further, on the front surface of the cover door 82, a leftward triangular display recess 82f indicating a direction in which the cover door 82 opens is provided.

上記のような化粧カバー８は、扉体２を有さないコンセントに用いた場合に、プラグが接続されていないときに栓刃挿入口１０ａ〜１０ｃへの埃等の異物が入り込むことをカバー扉８２によって防ぐことができる。また、化粧カバー８を交換することで、外観やカバー扉８２の構造を容易に変更することができる。さらに、上記の化粧カバー８を本実施形態に用いれば、扉体２とカバー扉８２とを併せて備えることにより、埃等の異物をより確実に阻止することができる。   The decorative cover 8 as described above, when used in an outlet that does not have the door body 2, covers foreign matter such as dust entering the plug blade insertion openings 10 a to 10 c when the plug is not connected. 82 can prevent this. Further, the appearance and the structure of the cover door 82 can be easily changed by replacing the decorative cover 8. Furthermore, if the above-described decorative cover 8 is used in the present embodiment, the door body 2 and the cover door 82 are provided together, so that foreign matters such as dust can be more reliably prevented.

（ａ）（ｂ）はそれぞれ本発明の実施形態を示す正面図であり、（ａ）は扉体が閉位置にある状態を示し、（ｂ）は扉体が開位置にある状態を示す。(A) (b) is a front view which respectively shows embodiment of this invention, (a) shows the state in which a door body exists in a closed position, (b) shows the state in which a door body exists in an open position. （ａ）（ｂ）はそれぞれ同上を示す斜視図であり、（ａ）は扉体が閉位置にある状態を示し、（ｂ）は扉体が開位置にある状態を示す。(A) (b) is a perspective view which respectively shows the same as the above, (a) shows the state in which a door body exists in a closed position, (b) shows the state in which a door body exists in an open position. （ａ）〜（ｄ）はそれぞれ同上を示す図であり、（ａ）は正面図、（ｂ）は右側面図、（ｃ）は下面図、（ｄ）は背面図である。(A)-(d) is a figure which respectively shows the same as the above, (a) is a front view, (b) is a right view, (c) is a bottom view, (d) is a rear view. 同上を示す分解斜視図である。It is a disassembled perspective view which shows the same as the above. （ａ）は同上の要部を示す正面図であり、（ｂ）（ｃ）はそれぞれ互いに異なる比較例の要部を示す正面図である。(A) is a front view which shows the principal part same as the above, (b) (c) is a front view which shows the principal part of a comparative example mutually different. （ａ）は同上の使用形態の一例を示す正面図であり、（ｂ）は比較例を示す正面図である。(A) is a front view which shows an example of the usage pattern same as the above, (b) is a front view which shows a comparative example. （ａ）（ｂ）はそれぞれ同上にカバー扉を有する化粧カバーを取り付けた状態を示す斜視図であり、（ａ）はカバー扉が閉位置にある状態を示し、（ｂ）はカバー扉が開位置にある状態を示す。(A) (b) is a perspective view which shows the state which attached the decorative cover which has a cover door on each same, (a) shows the state in which a cover door is in a closed position, (b) shows the cover door open. Indicates the state in position. （ａ）（ｂ）はそれぞれ同上に別の形状のカバー扉を有する化粧カバーを取り付けた状態を示す斜視図であり、（ａ）はカバー扉が閉位置にある状態を示し、（ｂ）はカバー扉が開位置にある状態を示す。(A) (b) is a perspective view which shows the state which attached the decorative cover which has a cover door of another shape, respectively, (a) shows the state which has a cover door in a closed position, (b) The cover door is in the open position. （ａ）（ｂ）はそれぞれ従来例を示す正面図であり、（ａ）は扉体が閉位置にある状態を示し、（ｂ）は扉体が開位置にある状態を示す。(A) (b) is a front view which respectively shows a prior art example, (a) shows the state in which a door body exists in a closed position, (b) shows the state in which a door body exists in an open position.

符号の説明Explanation of symbols

１ ハウジング
２ 扉体
１０ａ〜１０ｃ 栓刃挿入口
２０ａ〜２０ｃ 栓刃挿通穴 DESCRIPTION OF SYMBOLS 1 Housing 2 Door body 10a-10c Plug blade insertion port 20a-20c Plug blade insertion hole

Claims (3)

接地極の栓刃が挿入される１個の接地栓刃挿入口を含む３個１組の栓刃挿入口が設けられたハウジングと、
栓刃挿入口に対応した寸法形状の３個１組の栓刃挿通穴が設けられ、栓刃挿通穴をハウジングの栓刃挿入口に連通させて各栓刃挿入口への栓刃の挿入を可能とする開位置と、各栓刃挿入口をそれぞれ閉塞する閉位置との間で、栓刃挿入口に対する栓刃の挿入方向に直交する面内でハウジングに対して回動自在に取り付けられた扉体とを備えることを特徴とするコンセント。 A housing provided with a set of three plug blade insertion ports including one ground plug blade insertion port into which a plug blade of a ground electrode is inserted;
One set of three plug blade insertion holes with dimensions and shapes corresponding to the blade insertion holes are provided, and the blade insertion holes are connected to the blade insertion holes of the housing to insert the blades into the blade insertion holes. Between the open position to be enabled and the closed position for closing each plug blade insertion port, it is rotatably attached to the housing in a plane orthogonal to the insertion direction of the plug blade with respect to the plug blade insertion port. An outlet characterized by comprising a door body. 閉位置において各栓刃挿通穴の位置はそれぞれ対応する栓刃挿入口の位置に対して栓刃挿入方向から見て時計回り方向又は反時計回り方向の一方側に９０°未満の角度だけずれていることを特徴とする請求項１記載のコンセント。   In the closed position, the position of each plug blade insertion hole is shifted by an angle of less than 90 ° clockwise or counterclockwise when viewed from the plug blade insertion direction with respect to the corresponding plug blade insertion port position. The outlet according to claim 1, wherein: ハウジングは所定の向きで固定されるものであって、栓刃挿入口のうち電圧側極の栓刃が挿入される電圧側栓刃挿入口と接地側極の栓刃が挿入される接地側栓刃挿入口とは互いに上下に並べて配置されていることを特徴とする請求項２記載のコンセント。   The housing is fixed in a predetermined orientation, and the ground side plug into which the voltage side plug blade insertion port into which the voltage side electrode plug blade is inserted and the ground side electrode plug blade is inserted. 3. The outlet according to claim 2, wherein the blade insertion openings are arranged side by side with each other.
JP2006134288A 2006-05-12 2006-05-12 Electric outlet Pending JP2007305489A (en)

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JP2006134288A JP2007305489A (en) 2006-05-12 2006-05-12 Electric outlet
TW96113797A TW200812168A (en) 2006-05-12 2007-04-19 Electrical outlet

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102136650A (en) * 2010-12-30 2011-07-27 重庆市巴县中学校 Socket
KR101096378B1 (en) 2011-06-29 2011-12-20 주식회사 에디슨전기 Plug socket with safety device
KR101207032B1 (en) 2012-06-12 2012-11-30 강승한 multiple-tap
CN103354964A (en) * 2011-12-22 2013-10-16 卢成泰 Safe electrical outlet
CN111987533A (en) * 2020-09-04 2020-11-24 张海星 Anti-drop safety socket

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108511940B (en) * 2015-03-16 2020-04-07 深圳市大疆创新科技有限公司 Connector and charging device using same

Citations (1)

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Publication number Priority date Publication date Assignee Title
JP2006059598A (en) * 2004-08-18 2006-03-02 Togo Seisakusho Corp Outlet

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006059598A (en) * 2004-08-18 2006-03-02 Togo Seisakusho Corp Outlet

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102136650A (en) * 2010-12-30 2011-07-27 重庆市巴县中学校 Socket
KR101096378B1 (en) 2011-06-29 2011-12-20 주식회사 에디슨전기 Plug socket with safety device
CN103354964A (en) * 2011-12-22 2013-10-16 卢成泰 Safe electrical outlet
CN103354964B (en) * 2011-12-22 2014-11-26 卢成泰 Safe electrical outlet
KR101207032B1 (en) 2012-06-12 2012-11-30 강승한 multiple-tap
CN111987533A (en) * 2020-09-04 2020-11-24 张海星 Anti-drop safety socket

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