JPH03222278A - Molding method for table tap - Google Patents

Molding method for table tap

Info

Publication number
JPH03222278A
JPH03222278A JP1716190A JP1716190A JPH03222278A JP H03222278 A JPH03222278 A JP H03222278A JP 1716190 A JP1716190 A JP 1716190A JP 1716190 A JP1716190 A JP 1716190A JP H03222278 A JPH03222278 A JP H03222278A
Authority
JP
Japan
Prior art keywords
inner case
mold
secondary molding
conductor
electric wire
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.)
Pending
Application number
JP1716190A
Other languages
Japanese (ja)
Inventor
Hiroyuki Tateishi
立石 博之
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP1716190A priority Critical patent/JPH03222278A/en
Publication of JPH03222278A publication Critical patent/JPH03222278A/en
Pending legal-status Critical Current

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  • Manufacturing Of Electrical Connectors (AREA)

Abstract

PURPOSE:To simplify a metal mold used for secondary molding by supporting and fixing an inner case by the upper and lower molds of a secondary molding metal mold, and performing positioning by the positioning projection of the lower mold and the plug edge inserting hole of the inner case. CONSTITUTION:An inner case 10 is supported and fixed by the upper mold 41 and the lower mold 42 of a secondary molding metal mold, and positioning is performed by the positioning projection 43 of the lower mold 42 and the plug edge inserting hole 11 of the inner case 10. Namely, the inner case 10 is formed of a material having heat resistance and tracking resistance and provided with an edge receiving spring 33, and a conductor 32 to which an external cable 30 is connected is installed thereto. An outer cell 20 is supported and fixed by the lower mold 42 having the positioning projection 43 inserted to the plug edge inserting hole 1 on one surface thereof and the upper mold 41 brought into contact with a protruding part 18 on the other surface side of the inner case 10, and the secondary molding of a material having shock resistance by a secondary molding metal mold formed of these upper and lower molds 41, 42 is conducted to cover almost the whole outer circumference of the inner case 10. Hence, the metal mold used for secondary molding can be simplified.

Description

【発明の詳細な説明】[Detailed description of the invention] 【産業上の利用分野】[Industrial application field]

本発明は、外部電線が接続されていて、さし込みプラグ
を受ける刃受ばねを備えたテーブルタップ、異に二重成
形型のテーブルタップの成形方法に関するものである。
The present invention relates to a method for forming a table tap, which is connected to an external electric wire and has a blade receiving spring for receiving a plug, and a double-molded table tap.

【従来の技術】[Conventional technology]

テーブルタップにおいては、さし込みプラグの栓刃を刃
受ばねに対して抜き差しする際にアークが発生すること
があり、栓刃と刃受ばねとの接触部では発熱することが
あるから、刃受ばねを納装するケースの内周面には、耐
熱性と耐トラッキング性とが要求される。また、テーブ
ルタップは移動自在に使用されるから、落下させたり他
の物品に衝突したりすることがあり、ケースの外周面に
は耐衝撃性が要求される。 ところで、耐熱性および耐トラッキング性と、耐衝撃性
とを同一材料で満足させるのは困難であるために、従来
より、耐熱性および耐トラッキング性とを有した材料(
一般には熟硬fヒ性合成樹脂)で内ケースを形成して、
この内ケース内に刃受ばねを備えた導電体を配設すると
ともに、内ケースの外周に耐衝撃性を有した材料(−最
には熱可塑性合成樹脂)で外シェルを形成した二重成形
型のものが提供されている。
In table taps, an arc may be generated when the blade of the insertion plug is inserted into or removed from the blade holder spring, and heat may be generated at the contact between the blade and the blade holder spring, so the blade The inner peripheral surface of the case in which the receiving spring is housed is required to have heat resistance and tracking resistance. Further, since the table tap is used in a movable manner, it may be dropped or collided with other objects, so the outer circumferential surface of the case is required to have impact resistance. By the way, it is difficult to satisfy heat resistance, tracking resistance, and impact resistance with the same material, so conventionally, materials with heat resistance and tracking resistance (
In general, the inner case is formed from a mature hard synthetic resin.
A conductor with a blade support spring is placed inside the inner case, and an outer shell is made of impact-resistant material (mostly thermoplastic synthetic resin) on the outer periphery of the inner case. types are provided.

【発明が解決しようとする課題】[Problem to be solved by the invention]

この場合、二次成形のための金型内に、−次成形品であ
る内ケースを確実に位置決め固定しなくては、内ケース
が備えている栓刃挿入口から二次成形の樹脂が内ケース
内に流入することがあるのはもちろん、二次成形によっ
て形成される外シェルと、栓刃挿入口の関係で外シェル
の一部がら外面に露出させざるを得ない内ケースとの境
界部にずれが生じたり、ばつが出たり、外シェルの肉厚
が一定しなかったりする。このために、従来は多くの位
置決めビンを備えた金型を用いてこれら位置決めビンで
内ケースの位置決めを行った上で二次成形を行っていた
が、金型に要するコストが高くなっていた。 本発明は上記問題点に鑑みなされたものであって、その
目的とするところは、二次成形に使用する金型を簡略化
することができるテーブルタップの成形方法を提供する
にある。
In this case, it is necessary to securely position and fix the inner case, which is a secondary molded product, in the mold for secondary molding. Not only can it flow into the case, but also the boundary between the outer shell formed by secondary molding and the inner case, where part of the outer shell has to be exposed on the outside due to the plug blade insertion hole. There may be misalignment or burrs, or the thickness of the outer shell may be inconsistent. For this reason, conventionally, a mold equipped with many positioning bins was used to position the inner case using these positioning bins before secondary molding was performed, but the cost required for the mold was high. . The present invention has been made in view of the above-mentioned problems, and an object thereof is to provide a table tap molding method that can simplify the mold used for secondary molding.

【課題を解決するための手段】[Means to solve the problem]

しかして本発明は、耐熱性と耐トラッキング性とを備え
た材料により形成された内ケースに、刃受ばねを有する
対の導電体を装着し、外部電線が接続された導電体が装
着されている内ケースを、その一面に設けられた栓刃挿
入口に差し込まれる位置決め突起を備えた下型と、内ケ
ースの他面側に設けられた凸部に当接する上型とで挟持
固定して、これら上下型からなる二次成形金型による耐
衝撃性を備えた材料の二次成形で、上記内ケースの外周
を略全周に亘って覆う外シェルを形成することに特徴を
有しており、また内ケースに導電体を装着した後、内ケ
ースから突出する導電体の電線接続部に外部電線を接続
するものであって、内ケースにおける凸部が設けられた
面倒に開口するかしめ部を備えた電線接続部に、外部電
線をかしめ接続することに特徴を有している。 [作用] 本発明によれば、内ケースは二次成形金型における上型
と下型とで挟持固定する上に、下型における位置決め突
起と内ケースの栓刃挿入口とで位置決めするために、内
ケースの位置決め固定を上下型のみで行って二次成形を
行うことができるものである。 また、導電体への外部電線の接続は、内ケースに導電体
を組み込んだ後に行う上に、この接続のかしめ方向を二
次成形金型における内ケースのセット方向に合わせてい
るために、二次成形の直前に外部電線の接続を行うこと
ができる。 [実施例コ 以下、本発明について説明する。−次成形品である内ケ
ース10は、第2図に示すように、一対の導電体32.
32が装着されるボディ12と、ボディ12に被嵌され
るカバー13とを組立ねじやリベット等の結合具14で
結合することにより形成されている一部ケース10の外
層面りこおける上面の2vM所および前面のI箇所には
それぞれ突台部15が形成されており、これら突台部1
5に各一対の栓刃挿入口11が開口している。 内ケース10内に配される円環電体32.32は、各栓
刃挿入口11に対応する部位に刃受ばね33を有する形
状に形成されたもので、一端にはかしめ圧着によって外
部型&i30が接続される電線接続部34が形成されて
いる。また、各導電体32の中間部には固定片35が形
成されており、固定片35には固定孔36が穿設されて
いる。導電体32は、ボディ12に突設されたボス17
に固定片35を載置するとともに、第3図に示すように
、ボス17の先端面に突設された凸部18を固定孔36
に圧入することにより、ボディ12に対して固定される
0図中19はボディ12内において円環電体32.32
を互いに隔絶する仕切壁19である。 そして、上記のように導電体32を固定したボディ12
に、カバー13をかぶせて、ねじやリベット等の結合具
14て・ボディ12.+=カバー13とを結合した時、
導電体32の一端に形成された前記電線接続部34は、
内ケース10の一端から突出するものであり、外部電線
30はこの状態の電線接続部34にかしめ結合で接続さ
れる。 外シェル20は、上記のように外部電線30を接続した
後、内ケース10の外周に二次成形することで形成され
て、突台部15表面を除く略全周を包む。電線接続部3
4や外部電線30における股割り部分も外シェル20で
覆われる。 ここにおいて、上記外シェル20の形成は、第1図に示
す上型41と下型42とからなる二次成形用の金型4内
に内ケース10をセ・iトして行うのであるが、内ケー
ス10は金型4に上下が逆の状態でセットされるもので
あり、そして下型42から突設された位置決め突起43
が栓刃挿入口11に差し込まれることで位置決めされる
。また、内ケース10はその下面側に第6図にも示すよ
うに、複数個の凸部18を備えたものとなっており、上
型41はこの凸部18表面に当接して、下型42との間
で内ケース10を挟持固定する。内ケース10は上下型
41.42の間で確実に固定されてしまうわけであり、
また上記位置決め突起43による位置決めがなされるわ
けである。 また、この二次成形に先立って、前述のように、内ケー
ス10から突出している導電体32の電線接続部34に
外部電線30の接続を行うわけであるが、電線接続部3
4はそのかしめが内ケース10の凸部18が設けられた
裏面側からなされるものとなっている。つまり、二次成
形用の金型4に内ケース10をセットする時と同じく上
下を逆さまにした状態で、電線接続部34に外部電線3
0の被覆をむいた芯線を乗せ、そして上方から電線接続
部34をかしめれば、接続がなされるようにしているわ
けであり、このために、二次成形の直前に外部電線30
の接続工程をおくことができ、外部電線30が接続され
た状態での内ケース30の搬送量やハンドリングを最小
限に抑えることができるものである。 尚、このようにかしめ方向を設定することは、テーブル
タップにとどまらず、たとえば第7因に示すような差し
込みプラグ5の一次成形品から突出した電線接続部50
に外部電線30を接続し、その後、二次成形されるもの
でも有効である1図中イが二次成形の金型の上型側、口
が下型側を示している。
Therefore, in the present invention, a pair of conductors having a blade receiving spring is attached to an inner case formed of a material having heat resistance and tracking resistance, and a conductor to which an external electric wire is connected is attached. The inner case is clamped and fixed between a lower mold equipped with a positioning protrusion that is inserted into a plug blade insertion opening provided on one side of the inner case, and an upper mold that abuts a convex portion provided on the other side of the inner case. , is characterized in that an outer shell that covers substantially the entire outer periphery of the inner case is formed by secondary molding of a material with impact resistance using a secondary molding mold consisting of these upper and lower molds. In addition, after the conductor is attached to the inner case, an external wire is connected to the wire connection part of the conductor that protrudes from the inner case, and the caulking part is provided with a convex part in the inner case and has a cumbersome opening. The feature is that the external electric wire is caulked and connected to the electric wire connection part provided with. [Function] According to the present invention, the inner case is not only clamped and fixed by the upper mold and the lower mold in the secondary mold, but also positioned by the positioning protrusion in the lower mold and the plug blade insertion opening of the inner case. , the inner case can be positioned and fixed using only the upper and lower molds to perform secondary molding. In addition, since the external wires are connected to the conductor after the conductor is assembled into the inner case, and the direction of caulking for this connection is aligned with the direction in which the inner case is set in the secondary mold, it is difficult to connect the external wire to the conductor. External wires can be connected immediately before the next molding. [Example] The present invention will be described below. - As shown in FIG. 2, the inner case 10, which is the next molded product, includes a pair of conductors 32.
2vM of the upper surface of the outer layer of the case 10, which is formed by connecting the body 12 to which the 32 is attached and the cover 13 fitted to the body 12 with a coupling tool 14 such as an assembly screw or rivet. A protruding base portion 15 is formed at each of the locations I and I on the front surface, and these protruding base portions 1
A pair of plug blade insertion openings 11 are opened at each of the openings 5. The annular electric body 32,32 disposed inside the inner case 10 is formed in a shape having a blade receiving spring 33 at a portion corresponding to each blade insertion opening 11, and an external mold is attached to one end by caulking. A wire connection portion 34 to which &i30 is connected is formed. Furthermore, a fixing piece 35 is formed in the middle of each conductor 32, and a fixing hole 36 is bored in the fixing piece 35. The conductor 32 is connected to a boss 17 protruding from the body 12.
At the same time, as shown in FIG.
19 in the figure is an annular electric body 32.32 in the body 12.
This is a partition wall 19 that separates the two from each other. Then, the body 12 to which the conductor 32 is fixed as described above is
Cover 13 with the cover 13, and attach the fasteners 14 such as screws or rivets to the body 12. +=When combined with cover 13,
The wire connection portion 34 formed at one end of the conductor 32 is
It protrudes from one end of the inner case 10, and the external wire 30 is connected to the wire connecting portion 34 in this state by caulking. The outer shell 20 is formed by secondary molding on the outer periphery of the inner case 10 after connecting the external electric wire 30 as described above, and wraps substantially the entire periphery except for the surface of the protrusion 15. Wire connection part 3
4 and the split portions of the external electric wires 30 are also covered with the outer shell 20. Here, the outer shell 20 is formed by placing the inner case 10 in a secondary molding mold 4 consisting of an upper mold 41 and a lower mold 42 shown in FIG. The inner case 10 is set upside down in the mold 4, and a positioning protrusion 43 protrudes from the lower mold 42.
is positioned by being inserted into the plug blade insertion opening 11. In addition, the inner case 10 is provided with a plurality of protrusions 18 on its lower surface side, as shown in FIG. The inner case 10 is clamped and fixed between the inner case 42 and the inner case 42. The inner case 10 is securely fixed between the upper and lower molds 41 and 42,
Further, positioning is performed using the positioning protrusion 43. Furthermore, prior to this secondary molding, as described above, the external wire 30 is connected to the wire connection portion 34 of the conductor 32 protruding from the inner case 10.
4, the caulking is performed from the back side of the inner case 10 where the convex portion 18 is provided. That is, in the same way as when setting the inner case 10 in the mold 4 for secondary molding, the external electric wire 3 is attached to the electric wire connection part 34 with the inner case 10 turned upside down.
The connection is made by placing the core wire with the outer wire 30 coated on it and caulking the wire connection part 34 from above.For this purpose, the external wire 30 is
The connecting process can be performed, and the amount of transportation and handling of the inner case 30 in a state where the external electric wire 30 is connected can be minimized. Note that setting the caulking direction in this manner is applicable not only to power taps, but also to electric wire connecting portions 50 protruding from the primary molded product of the plug 5 as shown in the seventh factor.
The external electric wire 30 is connected to the mold, and it is also effective for secondary molding. In Fig. 1, A indicates the upper side of the mold for secondary molding, and the opening indicates the lower mold side.

【発明の効果】【Effect of the invention】

以上のように本発明においては、内ケースは二次成形金
型における上型と下型とで挟持固定する上に、下型にお
ける位置決め突起と内ケースの栓刃挿入口とで位置決め
するために、内ケースの位置決め固定を上下型のみで行
って二次成形を行うことができるとともに、外シェルと
内ケースとの境界部にずれが生じたり、ばつが出たり、
外シェルの肉厚が一定にならなかったりすることがない
ものである。 また、導電体への外部電線の接続は、内ケースに導電体
を組み込んだ後に行う上に、この接続のかしめ方向を二
次成形金型における内ケースのセット方向に合わせてい
るために、二次成形の直前に外部電線の接続を行うこと
ができ、外部tmがつなかった状態の内ケースの搬送や
ハンドリングを最小限に抑えることができて、製造が容
易になるものである。
As described above, in the present invention, the inner case is not only clamped and fixed between the upper mold and the lower mold in the secondary mold, but also positioned by the positioning protrusion on the lower mold and the plug blade insertion opening of the inner case. , the inner case can be positioned and fixed using only the upper and lower molds for secondary molding, and there is no possibility of misalignment or burrs at the boundary between the outer shell and the inner case.
The thickness of the outer shell does not become constant. In addition, since the external wires are connected to the conductor after the conductor is assembled into the inner case, and the caulking direction of this connection is aligned with the setting direction of the inner case in the secondary molding mold, The external electric wires can be connected immediately before the next molding, and the transportation and handling of the inner case with the external tm connected can be minimized, which facilitates manufacturing.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明に係るテーブルタップと金型の断面図、
第2図は同上のテーブルタッグの分解斜視図、第3図は
同上の導電体を固定したボディの斜視図、第4図〜第6
図は夫々内ケースの異なる方向から見た斜視図、第7図
は他の部品を示す側面図であって、4は金型、10は内
ケース、11は栓刃挿入口、18は凸部、20は外シェ
ル、32は導電体、41は上型、42は下型、43は位
置決め突起を示す。
FIG. 1 is a sectional view of a table tap and a mold according to the present invention,
Figure 2 is an exploded perspective view of the above table tag, Figure 3 is a perspective view of the body to which the conductor is fixed, and Figures 4 to 6.
Each figure is a perspective view of the inner case seen from different directions, and FIG. 7 is a side view showing other parts, in which 4 is a mold, 10 is an inner case, 11 is a blade insertion opening, and 18 is a convex portion. , 20 is an outer shell, 32 is a conductor, 41 is an upper mold, 42 is a lower mold, and 43 is a positioning projection.

Claims (2)

【特許請求の範囲】[Claims] (1)耐熱性と耐トラッキング性とを備えた材料により
形成された内ケースに、刃受ばねを有する対の導電体を
装着し、外部電線が接続された導電体が装着されている
内ケースを、その一面に設けられた栓刃挿入口に差し込
まれる位置決め突起を備えた下型と、内ケースの他面側
に設けられた凸部に当接する上型とで挟持固定して、こ
れら上下型からなる二次成形金型による耐衝撃性を備え
た材料の二次成形で、上記内ケースの外周を略全周に亘
って覆う外シェルを形成することを特徴とするテーブル
タップの成形方法。
(1) An inner case made of a material with heat resistance and tracking resistance, in which a pair of conductors having a blade receiving spring is attached, and a conductor to which an external electric wire is connected is attached. is clamped and fixed between a lower mold equipped with a positioning protrusion that is inserted into the plug blade insertion opening provided on one side of the inner case, and an upper mold that abuts a convex portion provided on the other side of the inner case. A method for molding a table tap, characterized in that an outer shell that covers substantially the entire outer periphery of the inner case is formed by secondary molding of a material with impact resistance using a secondary mold consisting of a mold. .
(2)内ケースに導電体を装着した後、内ケースから突
出する導電体の電線接続部に外部電線を接続するもので
あつて、内ケースにおける凸部が設けられた面側に開口
するかしめ部を備えた電線接続部に、外部電線をかしめ
接続することを特徴とする請求項1記載のテーブルタッ
プの成形方法。
(2) After the conductor is attached to the inner case, an external wire is connected to the wire connection part of the conductor protruding from the inner case, and the caulking is opened on the side of the inner case where the convex part is provided. 2. The method of forming a table tap according to claim 1, wherein an external electric wire is caulked and connected to the electric wire connection portion having a portion.
JP1716190A 1990-01-26 1990-01-26 Molding method for table tap Pending JPH03222278A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1716190A JPH03222278A (en) 1990-01-26 1990-01-26 Molding method for table tap

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1716190A JPH03222278A (en) 1990-01-26 1990-01-26 Molding method for table tap

Publications (1)

Publication Number Publication Date
JPH03222278A true JPH03222278A (en) 1991-10-01

Family

ID=11936245

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1716190A Pending JPH03222278A (en) 1990-01-26 1990-01-26 Molding method for table tap

Country Status (1)

Country Link
JP (1) JPH03222278A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011159464A (en) * 2010-01-29 2011-08-18 Fujitsu Ltd Table tap and power measuring system
WO2019187999A1 (en) * 2018-03-29 2019-10-03 パナソニックIpマネジメント株式会社 Electrical outlet

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011159464A (en) * 2010-01-29 2011-08-18 Fujitsu Ltd Table tap and power measuring system
WO2019187999A1 (en) * 2018-03-29 2019-10-03 パナソニックIpマネジメント株式会社 Electrical outlet
JP2019175807A (en) * 2018-03-29 2019-10-10 パナソニックIpマネジメント株式会社 Electric outlet

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