JPH09199212A - Power source plug - Google Patents
Power source plugInfo
- Publication number
- JPH09199212A JPH09199212A JP953796A JP953796A JPH09199212A JP H09199212 A JPH09199212 A JP H09199212A JP 953796 A JP953796 A JP 953796A JP 953796 A JP953796 A JP 953796A JP H09199212 A JPH09199212 A JP H09199212A
- Authority
- JP
- Japan
- Prior art keywords
- plug
- connection terminal
- power
- power plug
- plug body
- 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.)
- Granted
Links
Landscapes
- Manufacturing Of Electrical Connectors (AREA)
- Connector Housings Or Holding Contact Members (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電源コンセントに差し
込まれて電気機器に電力を供給する電源プラグに関し、
更に詳しくは、２重成形構造の電源プラグ（以下、単に
「２重成形プラグ」と略記する）に間隙充填部を形成し
てトラッキング火災（塵埃等の堆積による短絡を原因と
する火災）を防止した電源プラグに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power plug which is inserted into a power outlet to supply electric power to electric equipment,
More specifically, a gap filling part is formed in a power plug having a double-molded structure (hereinafter simply referred to as "double-molded plug") to prevent tracking fire (fire caused by a short circuit due to accumulation of dust etc.). It is related to the power plug.
【０００２】[0002]
【従来の技術】電化製品やＯＡ機器等の電気機器には、
電源コンセントに差し込み接続される電源プラグが備え
られている。かかる電源プラグの接続端子部材は、電源
コンセントの電源プラグ接続口に差し込み可能とするた
めに、外形寸法が電源プラグ接続口の内径寸法に比べて
やや小となされている。従って、電源プラグは電源コン
セントに差し込まれた際に、間隙が生じてこの間隙に塵
埃等が付着して、ショート等の不都合が発生する虞れが
ある。2. Description of the Related Art For electrical equipment such as electric appliances and office automation equipment,
It has a power plug that plugs into a power outlet. The connection terminal member of such a power plug has an outer size slightly smaller than the inner diameter of the power plug connection port so that it can be inserted into the power plug connection port of the power outlet. Therefore, when the power plug is inserted into a power outlet, a gap is generated, and dust or the like is attached to the gap, which may cause inconvenience such as short circuit.
【０００３】また、電源プラグは電源コンセントに差し
込まれた状態で間隙が生じているため、電源プラグがガ
タつきやすく、電源プラグが電源コンセントに対して傾
斜し、電源プラグ接続口から抜けやすい状態となる。こ
のため、電源プラグの電源コードに誤って足を引っかけ
た場合に簡単に電源プラグが抜けてしまい、特に電力の
供給を常時必要とするＯＡ機器等においては、電力が遮
断することにより、内部データが破損するという問題が
発生する。かかる問題を解決する目的で、本出願人が先
に出願した特願平０７−３７３８８号明細書に記載の
「電源プラグ」があり、その概要を先願例として図３に
再掲して説明する。Since the power plug has a gap when it is inserted into the power outlet, the power plug is easily rattled, the power plug is inclined with respect to the power outlet, and the power plug is easily removed from the connection port. Become. For this reason, if the power cord of the power plug is accidentally hooked, the power plug is easily pulled out. Especially, in OA equipment that requires constant power supply, the internal data is cut off by cutting off the power. The problem of being damaged occurs. For the purpose of solving such a problem, there is a "power plug" described in the specification of Japanese Patent Application No. 07-37388 filed by the applicant earlier, and its outline will be described again in FIG. 3 as an example of the prior application. .
【０００４】先願例の電源プラグ１は、図３に示すよう
にプラグ本体３と、電源コンセント２の電源プラグ接続
口９Ａ、９Ｂに差し込まれる一対の接続端子部材４Ａ、
４Ｂと、電気機器に接続された電源コード５を備えてい
る。As shown in FIG. 3, the power plug 1 of the prior application has a plug body 3 and a pair of connection terminal members 4A inserted into the power plug connection ports 9A and 9B of the power outlet 2.
4B and a power cord 5 connected to an electric device.
【０００５】プラグ本体３は、プラスチック、合成ゴム
などの絶縁性を有する絶縁材料によって、外形が略矩形
状に形成されている。プラグ本体３は、電源コンセント
２に差し込む側の突当面３Ａに一対の間隙充填部６Ａ、
６Ｂが突出形成されている。この間隙充填部６Ａ、６Ｂ
は、角筒状に形成され、外形寸法が電源コンセント２の
電源プラグ接続口９Ａ、９Ｂの内径寸法と略等しい大き
さに形成されている。また、間隙充填部６Ａ、６Ｂに
は、接続端子部材４Ａ、４Ｂの外形寸法に略等しい内径
寸法を有する接続端子挿通穴７Ａ、７Ｂが設けられてい
る。更に、間隙充填部６Ａ、６Ｂには、先端部に面取り
部８Ａ、８Ｂがそれぞれ形成されている。The plug body 3 is made of an insulating material having an insulating property such as plastic or synthetic rubber and has a substantially rectangular outer shape. The plug body 3 has a pair of gap filling portions 6A on the abutting surface 3A on the side to be inserted into the power outlet 2.
6B is formed to project. The gap filling portions 6A and 6B
Is formed in a rectangular tube shape, and the outer dimensions thereof are substantially equal to the inner diameter dimensions of the power plug connection ports 9A and 9B of the power outlet 2. Further, the gap filling portions 6A and 6B are provided with connection terminal insertion holes 7A and 7B having inner diameters substantially equal to the outer dimensions of the connection terminal members 4A and 4B. Further, chamfered portions 8A and 8B are formed at the tips of the gap filling portions 6A and 6B, respectively.
【０００６】接続端子部材４Ａ、４Ｂは金属板で形成さ
れ、基端側がプラグ本体３の内部に支持され、電源コン
セント２に差し込まれる側の先端部分がプラグ本体３の
接続端子挿通穴７Ａ、７Ｂより突出するようにしてプラ
グ本体３に取付けられている。従って、接続端子部材４
Ａ、４Ｂは、プラグ本体３から突出した部分のうちの根
元部分の外周壁が、プラグ本体３の間隙充填部６Ａ、６
Ｂの内周壁に覆われている。The connection terminal members 4A, 4B are formed of metal plates, the base end side is supported inside the plug body 3, and the tip end portion on the side to be inserted into the power outlet 2 is the connection terminal insertion holes 7A, 7B of the plug body 3. It is attached to the plug body 3 so as to project further. Therefore, the connection terminal member 4
In A and 4B, the outer peripheral wall of the root portion of the portion protruding from the plug body 3 has the gap filling portions 6A and 6A of the plug body 3.
It is covered by the inner peripheral wall of B.
【０００７】以上のように構成された先願例の電源プラ
グ１は、接続端子部材４Ａ、４Ｂが電源コンセント２の
電源プラグ接続口９Ａ、９Ｂに差し込まれる。このよう
にして差し込まれた際に、電源プラグ１の接続端子部材
４Ａ、４Ｂの外周壁と電源コンセント２の電源プラグ接
続口９Ａ、９Ｂの内周壁との間に生じる間隙１０Ａ、１
０Ｂに間隙充填部６Ａ、６Ｂが充填される。これによ
り、間隙１０Ａ、１０Ｂに塵埃等が入り込むことを防止
するとともに、ガタつきの発生を防止するというもので
ある。In the power plug 1 of the prior application example configured as described above, the connection terminal members 4A and 4B are inserted into the power plug connection ports 9A and 9B of the power outlet 2. When inserted in this way, gaps 10A, 1A formed between the outer peripheral walls of the connection terminal members 4A, 4B of the power plug 1 and the inner peripheral walls of the power plug connection ports 9A, 9B of the power outlet 2 are inserted.
The space filling portions 6A and 6B are filled in 0B. This prevents dust and the like from entering the gaps 10A and 10B and prevents rattling.
【０００８】引き続き、従来技術の２重成形プラグにつ
いて図４を参照して説明する。Next, a conventional double-molded plug will be described with reference to FIG.
【０００９】２重成形プラグは、比較的高電力の電気機
器を中心に利用されており、その信頼性の高さから、今
後多くの電気機器に利用されようとしている。従来技術
の２重成形プラグの構造は図４に示すように、プラグ本
体３と、電源コンセントに差し込まれる一対の接続端子
部材４Ａ、４Ｂと、電気機器に接続された電源コード５
と、一対の接続端子部材４Ａ、４Ｂと電源コード５を接
続するカシメ部１１等を備えて構成される。The double-molded plug is mainly used in electric devices of relatively high power, and due to its high reliability, it is about to be used in many electric devices in the future. As shown in FIG. 4, the structure of a conventional double-molded plug is a plug body 3, a pair of connection terminal members 4A and 4B to be inserted into a power outlet, and a power cord 5 connected to an electric device.
And a caulking portion 11 for connecting the pair of connection terminal members 4A and 4B to the power cord 5 and the like.
【００１０】プラグ本体３は、ポリ塩化ビニルＰＶＣ
（「塩化ビニル樹脂」ともいう）等により、外形が略矩
形状に形成されている。プラグ本体３の突当面３Ａ側
は、強度増加や延焼を防止するため熱硬化性樹脂１２で
形成されている。この熱硬化性樹脂１２の所定位置には
接続端子部材４Ａ、４Ｂが突出形成されている。この接
続端子部材４Ａ、４Ｂは金属板で形成され、基端側がプ
ラグ本体３の内部に支持されて取付けられている。The plug body 3 is made of polyvinyl chloride PVC.
(Also referred to as "vinyl chloride resin") or the like, the outer shape is formed into a substantially rectangular shape. The abutting surface 3A side of the plug body 3 is formed of a thermosetting resin 12 in order to prevent increase in strength and spread of fire. Connection terminal members 4A and 4B are formed at predetermined positions of the thermosetting resin 12 so as to project therefrom. The connection terminal members 4A and 4B are formed of a metal plate, and the base end side is supported and attached inside the plug body 3.
【００１１】従来技術の２重成形プラグは、次のように
製造されるのが一般的である。すなわち、先ず一対の接
続端子部材４Ａ、４Ｂを熱硬化性樹脂１２に挿入し、接
続端子部材４Ａ、４Ｂの基端側をカシメ部１１によって
電源コード５と接続する。この状態において、プラグ本
体３を形成するポリ塩化ビニル等の樹脂を金型に流し込
むことにより、２重成形プラグが形成される。Prior art double molded plugs are typically manufactured as follows. That is, first, the pair of connection terminal members 4A and 4B are inserted into the thermosetting resin 12, and the proximal ends of the connection terminal members 4A and 4B are connected to the power cord 5 by the caulking portion 11. In this state, a double molded plug is formed by pouring resin such as polyvinyl chloride forming the plug body 3 into the mold.
【００１２】以上の説明で明らかなように、図３におけ
る先願例の電源プラグ１では、間隙充填部６Ａ、６Ｂが
プラグ本体３と一体的に同時形成されるようになってい
る。また、図４に示した従来技術の２重成形プラグにお
いては、一対の接続端子部材４Ａ、４Ｂを熱硬化性樹脂
１２に挿入後、プラグ本体３を形成するポリ塩化ビニル
等の樹脂を金型に流し込むことにより形成されている。As is clear from the above description, in the power supply plug 1 of the prior application example shown in FIG. 3, the gap filling portions 6A and 6B are formed integrally with the plug body 3 at the same time. Further, in the conventional double-molded plug shown in FIG. 4, after inserting the pair of connection terminal members 4A and 4B into the thermosetting resin 12, a resin such as polyvinyl chloride forming the plug body 3 is molded into a mold. It is formed by pouring into.
【００１３】しかしながら、先願例の間隙充填部を有す
る電源プラグに、この２重成形プラグ構造を応用しよう
とすると、間隙充填部６Ａが、図４（ｃ）に示すように
熱硬化性樹脂１２と一体的に形成されることになる。こ
の熱硬化性樹脂１２は固くて脆いため、電源プラグの接
続端子部材に加わる外力等により、間隙充填部６Ａ、４
Ｂが破損する虞れがあり、２重成形プラグ構造が利用で
きないという問題点があった。However, if this double-molded plug structure is applied to the power plug having the gap filling portion of the prior application, the gap filling portion 6A becomes a thermosetting resin 12 as shown in FIG. 4 (c). Will be formed integrally with. Since the thermosetting resin 12 is hard and brittle, the gap filling portions 6A, 4A, 4A and
There is a risk that B may be damaged, and there is a problem that the double molded plug structure cannot be used.
【００１４】[0014]
【発明が解決しようとする課題】本発明はかかる問題点
に鑑みてなされたもので、その課題は、間隙充填部を有
する電源プラグに、２重成形プラグ構造を応用する場合
における問題点を解決し、より安全性を高めた電源プラ
グを提供することである。The present invention has been made in view of the above problems, and the problem is to solve the problems in the case of applying the double-molded plug structure to a power plug having a gap filling portion. And to provide a power plug with improved safety.
【００１５】[0015]
【課題を解決するための手段】かかる課題を解決するた
めに本発明の電源プラグは、ポリ塩化ビニル等の絶縁材
料によって形成されたプラグ本体と、このプラグ本体の
突当面に形成された熱硬化性樹脂等の難燃手段と、この
プラグ本体の内部に基端部が支持された一対の接続端子
部材と、これら接続端子部材のプラグ本体から突出した
部分の根元部分に設けられた間隙充填手段とを備えた２
重成形構造の電源プラグであって、この間隙充填手段
は、プラグ本体と同一絶縁材料によって一体的に突出形
成されるととともに、接続端子部材が電源コンセントの
電源プラグ接続口に差し込まれた状態において、これら
接続端子部材の外周壁と電源プラグ接続口の内周壁との
間に構成される間隙に充填される構成である。In order to solve the above problems, a power plug according to the present invention comprises a plug body formed of an insulating material such as polyvinyl chloride and a thermosetting material formed on the abutting surface of the plug body. -Resistant resin or other flame-retardant means, a pair of connection terminal members whose base ends are supported inside the plug body, and gap filling means provided at the roots of these connection terminal members protruding from the plug body. With 2
In a power plug having a heavy-molded structure, the gap filling means is integrally formed with the plug body by the same insulating material, and the connection terminal member is inserted into a power plug connection port of a power outlet. The gap is filled between the outer peripheral wall of these connection terminal members and the inner peripheral wall of the power plug connection port.
【００１６】また、本発明に係る電源プラグの難燃手段
に形成された接続端子部材挿通穴の内周壁には、難燃手
段の突当面から所定寸法だけ後退した位置に、接続端子
部材を保持するリブが形成されている。The inner peripheral wall of the connecting terminal member insertion hole formed in the flame retarding means of the power plug according to the present invention holds the connecting terminal member at a position retracted from the abutting surface of the flame retarding means by a predetermined dimension. Ribs are formed.
【００１７】かかる構成の本発明の電源プラグは、接続
端子部材が電源コンセントの電源プラグ接続口に差し込
まれた際に、これら接続端子部材の外周壁と電源コンセ
ントの電源プラグ接続口の内周壁との間に生じる間隙に
間隙充填手段が充填される。この間隙充填手段は、プラ
グ本体と同一絶縁材料によって一体的に突出形成されて
いるため、接続端子部材に加わる外力等により、破損す
る虞れがなくなる。In the power plug of the present invention having such a configuration, when the connection terminal member is inserted into the power plug connection port of the power outlet, the outer wall of these connection terminal members and the inner wall of the power plug connection port of the power outlet are formed. The gap filling means is filled in the gap generated between the gaps. The gap filling means is integrally formed with the plug body by the same insulating material so as to project. Therefore, there is no possibility that the gap filling means will be damaged by an external force applied to the connection terminal member.
【００１８】また、本発明に係る難燃手段の接続端子部
材挿通穴の内周壁には、難燃手段の突当面から所定寸法
だけ後退した位置に、接続端子部材を保持するリブが形
成されているため、プラグ本体と同じ絶縁材料を流入す
る際の流れをよくし、間隙充填部の各面にリブを原因と
する横スジが発生するのを抑えることができる。Further, a rib for holding the connection terminal member is formed on the inner peripheral wall of the connecting terminal member insertion hole of the flame retarding means according to the present invention at a position retracted from the abutting surface of the flame retarding means by a predetermined dimension. Therefore, it is possible to improve the flow of the same insulating material as that of the plug body when it flows in, and it is possible to suppress the occurrence of lateral stripes due to the ribs on each surface of the gap filling portion.
【００１９】[0019]
【発明の実施の形態】以下、本発明の具体的な実施の形
態につき添付図面を参照して説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings.
【００２０】先ず、図１を参照して本発明の電源プラグ
の構造を説明する。図１は本発明の電源プラグを示す図
であり、（ａ）は同電源プラグの上部断面図であり、
（ｂ）は同電源プラグの斜視図である。なお、従来技術
で記載した事項と共通する部分には同一の参照符号を付
すものとする。また、電源コンセント側の電源プラグ接
続口等は同一であるため図説を省略した。First, the structure of the power plug of the present invention will be described with reference to FIG. FIG. 1 is a view showing a power plug of the present invention, and FIG. 1 (a) is an upper sectional view of the power plug,
(B) is a perspective view of the power plug. Note that portions common to those described in the related art are denoted by the same reference numerals. The illustration of the power plug connection port on the power outlet side is omitted because it is the same.
【００２１】本発明の電源プラグ２１は、図１に示すよ
うにプラグ本体２３と、このプラグ本体２３の突当面に
形成された補強や延焼防止を目的とする難燃手段として
の熱硬化性樹脂２２と、電源コンセントに差し込まれる
一対の接続端子部材４Ａ、４Ｂと、これら接続端子部材
４Ａ、４Ｂのプラグ本体２３から突出した部分の根元部
分に設けられる間隙充填部２６Ａ、２６Ｂと、電気機器
に接続された電源コード５と、一対の接続端子部材４
Ａ、４Ｂと電源コード５を接続するカシメ部１１を備え
ている。As shown in FIG. 1, the power plug 21 of the present invention comprises a plug body 23 and a thermosetting resin as a flame retardant means formed on the abutting surface of the plug body 23 for the purpose of reinforcement and fire spread prevention. 22, a pair of connection terminal members 4A and 4B to be plugged into a power outlet, gap filling portions 26A and 26B provided at the roots of the portions of the connection terminal members 4A and 4B protruding from the plug body 23, and electrical equipment. Connected power cord 5 and a pair of connection terminal members 4
A caulking portion 11 for connecting the A and 4B and the power cord 5 is provided.
【００２２】プラグ本体２３は、ポリ塩化ビニル材料等
によって、外形が略矩形状に形成され、このプラグ本体
２３の突当面には難燃手段たる熱硬化性樹脂２２が形成
されている。プラグ本体２３は、電源コンセントに差し
込む側の突当面２３Ａに一対の間隙充填部２６Ａ、２６
Ｂが突出形成されている。この間隙充填部２６Ａ、２６
Ｂは角筒状に形成され、外形寸法が電源コンセントの電
源プラグ接続口の内径寸法と略等しい大きさに形成され
ている。また、間隙充填部２６Ａ、２６Ｂには、接続端
子部材４Ａ、４Ｂの外形寸法に略等しい内径寸法を有す
る接続端子挿通穴２７Ａ、２７Ｂが設けられている。更
に、間隙充填部２６Ａ、２６Ｂには、先端部に面取り部
２８Ａ、２８Ｂがそれぞれ形成されている。The plug body 23 is made of a polyvinyl chloride material or the like and has a substantially rectangular outer shape, and the abutting surface of the plug body 23 is provided with a thermosetting resin 22 as a flame retardant means. The plug body 23 has a pair of gap filling portions 26A, 26 on the abutting surface 23A on the side to be inserted into a power outlet.
B is formed to project. The gap filling portions 26A, 26
B is formed in the shape of a rectangular tube, and the outer dimension thereof is substantially equal to the inner diameter dimension of the power plug connection port of the power outlet. Further, the gap filling portions 26A, 26B are provided with connection terminal insertion holes 27A, 27B having inner diameters substantially equal to the outer dimensions of the connection terminal members 4A, 4B. Further, chamfered portions 28A and 28B are formed at the tips of the gap filling portions 26A and 26B, respectively.
【００２３】接続端子部材４Ａ、４Ｂは金属板で形成さ
れ、基端側がプラグ本体２３の内部に支持され、電源コ
ード５とカシメ部１１によって接続されている。接続端
子部材４Ａ、４Ｂの電源コンセントに差し込まれる側の
先端部分は、プラグ本体３の接続端子挿通穴２７Ａ、２
７Ｂより突出するようにしてプラグ本体２３に取付けら
れている。従って、接続端子部材４Ａ、４Ｂは、プラグ
本体２３から突出した部分のうちの根元部分における外
周壁が、プラグ本体２３の間隙充填部２６Ａ、２６Ｂの
内周壁に覆われている。The connection terminal members 4A and 4B are formed of metal plates, the base end side of which is supported inside the plug body 23 and are connected to the power cord 5 by the caulking portion 11. The tip portions of the connection terminal members 4A and 4B on the side to be plugged into the power outlet are connected to the connection terminal insertion holes 27A and 2A of the plug body 3.
It is attached to the plug body 23 so as to project from 7B. Therefore, in the connection terminal members 4A and 4B, the outer peripheral wall at the root portion of the portion protruding from the plug body 23 is covered with the inner peripheral walls of the gap filling portions 26A and 26B of the plug body 23.
【００２４】本発明の電源プラグ２１は、次のように製
造される。すなわち、先ず一対の接続端子部材４Ａ、４
Ｂを難燃手段たる熱硬化性樹脂２２に挿入し、接続端子
部材４Ａ、４Ｂの基端側をカシメ部１１によって電源コ
ード５と接続する。この状態において、プラグ本体２３
を形成するポリ塩化ビニル材料等の樹脂を金型に流し込
むことにより間隙充填部２６Ａ、２６Ｂが形成される。
このとき、熱硬化性樹脂２２の接続端子挿通穴２７Ａ、
２７Ｂと接続端子部材４Ａ、４Ｂの間隙からプラグ本体
２３と同一材料であるポリ塩化ビニル樹脂等を流入して
間隙充填部２６Ａ、２６Ｂを同時に形成する。The power plug 21 of the present invention is manufactured as follows. That is, first, the pair of connection terminal members 4A, 4
B is inserted into the thermosetting resin 22 which is a flame retardant means, and the proximal ends of the connection terminal members 4A and 4B are connected to the power cord 5 by the caulking portion 11. In this state, the plug body 23
The gap filling parts 26A and 26B are formed by pouring a resin such as a polyvinyl chloride material forming the gap into a mold.
At this time, the connection terminal insertion hole 27A of the thermosetting resin 22,
A gap filling portion 26A, 26B is formed at the same time by injecting a polyvinyl chloride resin or the like, which is the same material as the plug body 23, from the gap between 27B and the connection terminal members 4A, 4B.
【００２５】次に、図２を参照して本発明の電源プラグ
の要部構造を説明する。図２は本発明の電源プラグの詳
細を示す図であり、（ａ）は同電源プラグの熱硬化性樹
脂を示す正面図であり、（ｂ）は同熱硬化性樹脂のＸ−
Ｘ部を破断して示す断面図であり、（ｃ）は同電源プラ
グの正面図である。Next, the main structure of the power plug of the present invention will be described with reference to FIG. FIG. 2 is a diagram showing the details of the power plug of the present invention, (a) is a front view showing a thermosetting resin of the power plug, and (b) is an X- of the thermosetting resin.
It is sectional drawing which fracture | ruptures and shows the X section, and (c) is a front view of the same power plug.
【００２６】図２（ａ）において、熱硬化性樹脂２２に
形成されたの接続端子挿通穴２７Ａ、２７Ｂは、接続端
子部材４Ａ、４Ｂの幅よりも大きく形成されており、接
続端子挿通穴２７Ａ、２７Ｂの内壁面にはリブ２０Ａ、
２０Ｂが設けられている。このリブ２０Ａ、２０Ｂは、
接続端子挿通穴２７Ａ、２７Ｂの内壁側の４面にそれぞ
れ設けられており、図２（ｂ）に示すように、熱硬化性
樹脂２２の突当面２３Ａより所定寸法Ｌだけ奥まった部
分まで形成されている。リブ２０Ａ、２０Ｂが、寸法Ｌ
だけ奥に位置しているのは、プラグ本体２３の樹脂（ポ
リ塩化ビニル等）が流入する際の流れをよくする目的
や、樹脂が流入する際に形成される間隙充填部２６Ａ、
２６Ｂの各面に、リブ２０Ａ、２０Ｂによる横スジが発
生しないように面を均一にする目的である。In FIG. 2A, the connection terminal insertion holes 27A and 27B formed in the thermosetting resin 22 are formed larger than the widths of the connection terminal members 4A and 4B, and the connection terminal insertion hole 27A is formed. , Ribs 20A on the inner wall surface of 27B,
20B is provided. These ribs 20A and 20B are
As shown in FIG. 2B, the connection terminal insertion holes 27A and 27B are provided respectively on the inner wall side four surfaces, and as shown in FIG. 2B, the thermosetting resin 22 is formed to a portion recessed from the abutting surface 23A by a predetermined dimension L. ing. Ribs 20A and 20B have dimension L
Positioned only in the back is for the purpose of improving the flow of the resin (polyvinyl chloride or the like) of the plug body 23 when it flows in, and the gap filling portion 26A formed when the resin flows in.
The purpose is to make the surfaces uniform so that horizontal stripes due to the ribs 20A and 20B do not occur on each surface of 26B.
【００２７】熱硬化性樹脂２２の接続端子挿通穴２７
Ａ、２７Ｂに接続端子部材４Ａ、４Ｂを挿入すると、接
続端子部材４Ａ、４Ｂの各面は、接続端子挿通穴２７
Ａ、２７Ｂの内壁面に設けられたリブ２０Ａ、２０Ｂの
頂点で保持され、接続端子部材４Ａ、４Ｂは、接続端子
挿通穴２７Ａ、２７Ｂの中心位置で固定される。これに
より、接続端子部材４Ａ、４Ｂと接続端子挿通穴２７
Ａ、２７Ｂとの間にできる間隙を均等に、リブ２０Ａ、
２０Ｂの高さ分確保している。Connection terminal insertion hole 27 for thermosetting resin 22
When the connection terminal members 4A and 4B are inserted into A and 27B, the respective surfaces of the connection terminal members 4A and 4B are connected to the connection terminal insertion hole 27.
The connection terminal members 4A and 4B are held at the apexes of ribs 20A and 20B provided on the inner wall surfaces of A and 27B, and the connection terminal members 4A and 4B are fixed at the center positions of the connection terminal insertion holes 27A and 27B. Thereby, the connection terminal members 4A and 4B and the connection terminal insertion hole 27
Ribs 20A, evenly the gaps formed between A and 27B.
It secures the height of 20B.
【００２８】そして、電源プラグ成形時に、プラグ本体
２３のポリ塩化ビニル等の樹脂を、この接続端子部材４
Ａ、４Ｂと接続端子挿通穴２７Ａ、２７Ｂとの間にでき
た間隙を流入して、本発明の特徴事項である間隙充填部
２６Ａ、２６Ｂが、プラグ本体３と同一のポリ塩化ビニ
ル樹脂等で形成される。このようにして、電源プラグに
塵埃防止用の間隙充填部２６Ａ、２６Ｂを設けるととも
に、２重成形プラグ構造として信頼性の向上を図った本
発明の電源プラグ２１が完成される。At the time of molding the power plug, the resin such as polyvinyl chloride of the plug body 23 is connected to the connecting terminal member 4.
A gap formed between A and 4B and the connection terminal insertion holes 27A and 27B flows in, and the gap filling portions 26A and 26B, which are the features of the present invention, are made of the same polyvinyl chloride resin as the plug body 3. It is formed. In this way, the power supply plug 21 of the present invention having the double-molded plug structure and improved reliability is completed while providing the power supply plug with the gap filling portions 26A and 26B for preventing dust.
【００２９】以上のように構成された本発明の電源プラ
グ２１は、接続端子部材４Ａ、４Ｂが前述の電源コンセ
ントの電源プラグ接続口（図示省略）に容易に差し込ま
れる。このようにして差し込まれた際に、電源プラグ２
１の接続端子部材４Ａ、４Ｂの外周壁と、電源コンセン
トの電源プラグ接続口の内周壁との間に生じる間隙（図
示省略）に間隙充填部２６Ａ、２６Ｂが充填される。こ
の間隙充填部２６Ａ、２６Ｂは、同図（ｃ）に示すよう
にプラグ本体２３と同一のポリ塩化ビニル等の樹脂で形
成されているため、接続端子部材に加わる外力等によ
り、間隙充填部６Ａ、４Ｂが破損する虞れがなくなる。In the power plug 21 of the present invention having the above-described structure, the connection terminal members 4A and 4B are easily inserted into the power plug connection port (not shown) of the power outlet described above. When inserted in this way, the power plug 2
The gap filling portions 26A, 26B are filled in the gap (not shown) formed between the outer peripheral wall of the first connection terminal member 4A, 4B and the inner peripheral wall of the power plug connection port of the power outlet. Since the gap filling portions 26A and 26B are made of the same resin such as polyvinyl chloride as the plug body 23 as shown in FIG. 7C, the gap filling portion 6A is caused by an external force applied to the connection terminal member. There is no risk of damage to 4B.
【００３０】これにより、電源コンセントの電源プラグ
接続口の内周壁との間に生じる間隙に塵埃等が入り込む
ことを防止するとともに、ガタつきの発生を防止する。
従って、本発明の電源プラグ２１は、極めて安全性が高
く電源コード５の一端が接続された電気機器に確実に電
力を供給することができる。Thus, dust and the like are prevented from entering the gap formed between the inner wall of the power plug connection port of the power outlet and the rattling.
Therefore, the power plug 21 of the present invention is extremely safe and can reliably supply electric power to an electric device to which one end of the power cord 5 is connected.
【００３１】本発明は前述の実施の形態例に限定されず
種々の実施形態を採ることができる。例えば、前述の実
施の形態例では電源プラグのみを例示したが、本発明の
電源プラグを使用したあらゆる電気機器に利用可能であ
ることは勿論、ＡＣ／ＤＣアダプタ、テーブルタップ等
の接続端子部材が備えられた電源プラグに適用すること
が可能である。また、本発明の主旨を逸脱しない範囲で
適宜応用可能であることは言うまでもない。The present invention is not limited to the above-mentioned embodiments, and various embodiments can be adopted. For example, in the above-described embodiment, only the power plug is illustrated, but it is of course applicable to any electric equipment using the power plug of the present invention, and of course, a connection terminal member such as an AC / DC adapter or a table tap is provided. It is possible to apply to the provided power plug. Needless to say, the present invention can be appropriately applied without departing from the gist of the present invention.
【００３２】[0032]
【発明の効果】以上説明したように本発明の電源プラグ
によれば、接続端子部材のプラグ本体から突出した部分
のうちの根元部分に間隙充填部を備えたことにより、接
続端子部材が電源コンセントの電源プラグ接続口に差し
込まれた際に、接続端子部材の外周壁と電源プラグ接続
口の内周壁との間に生じる間隙に間隙充填手段が充填さ
れ、接続端子部材に塵埃等が付着してショートすること
が防止されるとともに、間隙充填手段は、プラグ本体と
同一絶縁材料によって一体的に突出形成されているた
め、接続端子部材に加わる外力等により、破損する虞れ
がなくなる。As described above, according to the power plug of the present invention, the connection terminal member is provided with the power outlet by providing the gap filling portion at the root portion of the portion of the connection terminal member protruding from the plug body. When the plug is inserted into the power plug connection port, the gap filling means is filled in the gap generated between the outer peripheral wall of the connection terminal member and the inner peripheral wall of the power plug connection port, and dust or the like adheres to the connection terminal member. The short circuit is prevented, and the gap filling means is integrally formed with the plug body by the same insulating material so that the gap filling means is prevented from being damaged by an external force applied to the connection terminal member.
【００３３】また、本発明に係る難燃手段の接続端子部
材挿通穴の内周壁には、難燃手段の突当面から所定寸法
だけ後退した位置に、接続端子部材を保持するリブが形
成されているため、プラグ本体と同じ絶縁材料を流入す
る際の流れがよくなり、間隙充填部の各面にリブを原因
とする横スジが発生するのを抑制できる。A rib for holding the connection terminal member is formed on the inner peripheral wall of the connection terminal member insertion hole of the flame retarding means according to the present invention at a position retracted by a predetermined dimension from the abutting surface of the flame retarding means. Therefore, the flow of the same insulating material as that of the plug body is improved, and it is possible to suppress the occurrence of lateral stripes due to the ribs on each surface of the gap filling portion.
【図１】本発明の電源プラグを示す図であり、（ａ）は
同電源プラグの上部断面図であり、（ｂ）は同電源プラ
グの斜視図である。FIG. 1 is a view showing a power plug of the present invention, (a) is a cross-sectional top view of the power plug, and (b) is a perspective view of the power plug.
【図２】本発明の電源プラグの詳細を示す図であり、
（ａ）は同電源プラグの熱硬化性樹脂を示す正面図であ
り、（ｂ）は同熱硬化性樹脂のＸ−Ｘ部を破断して示す
断面図であり、（ｃ）は同電源プラグの正面図である。FIG. 2 is a diagram showing details of a power plug of the present invention,
(A) is a front view showing a thermosetting resin of the same power plug, (b) is a cross-sectional view showing a section XX of the same thermosetting resin, and (c) is a power plug. FIG.
【図３】本発明に係わる先願例の電源プラグを示す図で
あり、（ａ）はその斜視図であり、（ｂ）は同電源プラ
グを示す正面図である。FIG. 3 is a diagram showing a power plug of a prior application example according to the present invention, (a) is a perspective view thereof, and (b) is a front view showing the power plug.
【図４】従来技術の２重成形プラグを示す図であり、
（ａ）は同２重成形プラグの上部断面図であり、（ｂ）
は同２重成形プラグの斜視図であり、（ｃ）は同２重成
形プラグの一部を拡大して示す上部断面図である。FIG. 4 shows a prior art double molded plug,
(A) is an upper sectional view of the double-molded plug, and (b) is
[Fig. 3] is a perspective view of the double-molded plug, and (c) is an enlarged top sectional view showing a part of the double-molded plug.
１ 電源プラグ ２ 電源コンセント 3、23 プラグ本体 ４ 接続端子部材 ５ 電源コード 6、26 間隙充填部 7、27 接続端子挿通穴 8、28 面取り部 ９ 電源プラグ接続口 １０ 間隙 １１ カシメ部 12、22 熱硬化性樹脂 ２１ 本発明の電源プラグ 1 Power plug 2 Power outlet 3,23 Plug body 4 Connection terminal member 5 Power cord 6,26 Gap filling part 7,27 Connection terminal insertion hole 8,28 Chamfer part 9 Power plug connection port 10 Gap 11 Caulking part 12, 22 Heat Curable resin 21 Power plug of the present invention
Claims (3)
と、 このプラグ本体の突当面に形成された難燃手段と、 このプラグ本体の内部に基端部が支持された一対の接続
端子部材と、 これら接続端子部材のプラグ本体から突出した部分の根
元部分に設けられた間隙充填手段とを備えた２重成形構
造の電源プラグであって、 この間隙充填手段は、プラグ本体と同一絶縁材料によっ
て一体に突出形成されるととともに、接続端子部材が電
源コンセントの電源プラグ接続口に差し込まれた状態に
おいて、これら接続端子部材の外周壁と電源プラグ接続
口の内周壁との間に構成される間隙に充填されることを
特徴とする電源プラグ。1. A plug body formed of an insulating material, a flame-retardant means formed on an abutting surface of the plug body, and a pair of connection terminal members whose base ends are supported inside the plug body. A power plug having a double-molded structure, which comprises a gap filling means provided at a base portion of a portion of the connection terminal member protruding from the plug body, the gap filling means being made of the same insulating material as the plug body. In the state in which the connection terminal member is inserted into the power plug connection port of the power outlet, the gap formed between the outer peripheral wall of these connection terminal members and the inner peripheral wall of the power plug connection port is formed. A power plug that is filled.
通穴の内周壁には、該難燃手段の突当面から所定寸法だ
け後退した位置に、接続端子部材を保持するリブが形成
されていることを特徴とする請求項１に記載の電源プラ
グ。2. A rib for holding the connection terminal member is formed on the inner peripheral wall of the connection terminal member insertion hole formed in the flame retarding means at a position retracted by a predetermined dimension from the abutting surface of the flame retarding means. The power plug according to claim 1, wherein the power plug is provided.
プラグ本体はポリ塩化ビニル樹脂で形成されていること
を特徴とする請求項１に記載の電源プラグ。3. The flame-retardant means is formed of a thermosetting resin,
The power plug according to claim 1, wherein the plug body is made of polyvinyl chloride resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00953796A JP3327093B2 (en) | 1996-01-23 | 1996-01-23 | electrical plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00953796A JP3327093B2 (en) | 1996-01-23 | 1996-01-23 | electrical plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09199212A true JPH09199212A (en) | 1997-07-31 |
| JP3327093B2 JP3327093B2 (en) | 2002-09-24 |
Family
ID=11723028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP00953796A Expired - Lifetime JP3327093B2 (en) | 1996-01-23 | 1996-01-23 | electrical plug |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3327093B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001167838A (en) * | 1999-12-08 | 2001-06-22 | Fuji Densen Kogyo Kk | Power cord and method of manufacturing the same |
| JP2006049223A (en) * | 2004-08-06 | 2006-02-16 | Nakano Denki Seisakusho:Kk | Attachment plug |
| JP2010205468A (en) * | 2009-03-02 | 2010-09-16 | Kawasaki Densen Kk | Power plug and method for manufacturing the same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011090786A (en) * | 2009-10-20 | 2011-05-06 | Kawasaki Densen Kk | Power plug and method of manufacturing the same |
-
1996
- 1996-01-23 JP JP00953796A patent/JP3327093B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001167838A (en) * | 1999-12-08 | 2001-06-22 | Fuji Densen Kogyo Kk | Power cord and method of manufacturing the same |
| JP2006049223A (en) * | 2004-08-06 | 2006-02-16 | Nakano Denki Seisakusho:Kk | Attachment plug |
| JP2010205468A (en) * | 2009-03-02 | 2010-09-16 | Kawasaki Densen Kk | Power plug and method for manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3327093B2 (en) | 2002-09-24 |
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