JP4146015B2

JP4146015B2 - Insulator of coaxial cable connection terminal

Info

Publication number: JP4146015B2
Application number: JP35186798A
Authority: JP
Inventors: 正彦村瀬
Original assignee: Maspro Denkoh Corp
Current assignee: Maspro Denkoh Corp
Priority date: 1998-12-10
Filing date: 1998-12-10
Publication date: 2008-09-03
Anticipated expiration: 2018-12-10
Also published as: JP2000173724A

Description

【０００１】
【発明の属する技術分野】
本発明は、同軸ケーブルを接続する接続端子の絶縁体構造に関する。
【０００２】
【従来の技術】
従来の同軸ケーブルを接続する接続端子の絶縁体構造を図４に示す。図示するように、絶縁体２０は、筒状の外側絶縁体２１とコンタクトピン２５を挿通固定する内側絶縁体２２とから形成され、絶縁体の組立は、内側絶縁体２２に形成されている挿通孔２２ａに、コンタクトピン２５の端子引出部２５ａを挿通してコンタクトピン２５を固定した後、外側絶縁体２１をコンタクトピン先端方向から被せるように送通し、コンタクトピン２５を覆うと共に内側絶縁体２２に外挿して、外側絶縁体２１と内側絶縁体２２とを一体化する。
そして、接栓を構成する円筒形の外部導体２３内にその絶縁体２０を挿入し、爪部２１ａを筐体壁部２４に形成した係止溝２４ａに係止させて絶縁体２０を固定して同軸ケーブルの接続端子を形成していた。
【０００３】
【発明が解決しようとする課題】
しかし、上記従来の絶縁体２０は、分離された２つの部材から構成されるため、取扱が面倒であるし、コンタクトピン２５の組み付け後に、絶縁体２０の組立作業をするため、外側絶縁体２１を組み付ける際、コンタクトピン２５に接触してコンタクトピン２５が変形したり、コンタクトピン２５の係止が外れたりすることがないよう注意をして行わなければならず、面倒な作業であった。
【０００４】
そこで本発明は、上記課題に鑑み、組立及び取扱が容易な同軸ケーブル接続端子の絶縁体を提供することを課題とする。
【０００５】
【課題を解決するための手段】
上記課題を解決するため、請求項１記載の発明は、中央に膨らみ部を有して中心軸上に同軸ケーブルの中心導体を挟持するコンタクトピンを固定可能であって、前面に同軸ケーブルの中心導体を挿入する挿入孔を有し、背面に前記コンタクトピンの端子引き出し部を突出させる送通溝が上下方向へ刻設された筒体形状の同軸ケーブル接続端子の絶縁体であって、筒体を中心軸方向に半割りした外形で形成される本体と蓋体とから成り、前記本体に前記背面を設けるとともに、その本体と蓋体とを、前記筒体の円周ラインから内側となる側面に形成されたヒンジ状連結部を介して連結する一方、対向する一対の保持壁を前記背面に連続して形成するとともに、前記保持壁により前記膨らみ部を挟持可能とし、前記端子引き出し部を前記送通溝から突出させた状態で前記膨らみ部を前記保持壁間へ埋設することにより、前記蓋体を前記本体に被せる以前に、前記本体に前記コンタクトピンを縦置き姿勢で保持可能としたことを特徴とする。
【０００７】
【発明の実施の形態】
以下、本発明を具体化した実施の形態を、図面を基に詳細に説明する。図１は本発明に係る同軸ケーブル接続端子の絶縁体の背面方向からの斜視図を示し、（ａ）は組立前の絶縁体の形状、（ｂ）は組み立てた状態を示している。
図において、絶縁体１は略円筒形であり、外形がその中心軸方向に半割した形状の本体２と蓋体３とから構成され、両者は連続形成された２ヶ所のヒンジ状連結部３により連結され、一体に合成樹脂により形成されている。尚、合成樹脂の材質としては、比較的柔軟性を有し、ヒンジ状連結部を形成し易いポリエチレンやポリプロピレンが適している。
【０００８】
本体２は背面２ａの全体が設けられ、背面２ａは、接続端子形成時に筐体内面に配置される面であり、コンタクトピン１０の端子引出部１０ａを突設させて挾持する送通溝５が形成されている。この、送通溝５は背面２ａの図示上端まで伸びて形成され、上方からコンタクトピン１０を送通可能に形成されている。尚、コンタクトピン１０はりん青銅板等のばね性のある導電材料をプレス加工して中央に膨らみ部１０ｂを有するよう形成してある。
【０００９】
そして、背面２ａに連続して、その左右にコンタクトピン１０の保持手段である保持壁９が形成されている。保持壁９は、コンタクトピン１０の膨らみ部１０ｂの形状に合わせて形成され、膨らみ部全体を覆い左右から膨らみ部１０ｂを挾持して保持するようになっている。
また、前面２ｂ側は同軸ケーブルの中心導体を挿入する挿入口６が半割りした状態で形成され、開放端となる外側辺２ｃの略中央には蓋体３を被せた際に蓋体３を係止するための係止突起７が設けられている。
【００１０】
蓋体３は、後部が開放され、前面３ａには半割りした挿入口６が形成されている。そして、上記本体２に形成された係止突起７に対応する外側辺３ｃの略中央にはその係止突起７を挿入係止させる係止孔８が形成されている。
尚、１２は接続端子を形成する際に、絶縁体１を外部導体２３に係止させる係止辺で、１３は係止する角穴である。
また、ヒンジ状連結部４を設けた内側辺２ｄ，３ｄは絶縁体の中心軸方向に沿って平坦な切り欠き１４が形成され、ヒンジ状連結部４が絶縁体１の円周ラインから突出しないようになっている。
【００１１】
絶縁体の組立は、まずコンタクトピン１０の端子引出部１０ａを本体２の送通溝５に挿入しながら保持壁９の間に膨らみ部１０ｂを挿入して、コンタクトピン１０を本体内に固定する。そして、ヒンジ状連結部４を折り曲げて蓋体３と本体２との開口面同士を合わせれば、係止孔８に係止突起７が挿入係止され、被せた状態で固定される。
【００１２】
このように、本体２と蓋体３とがヒンジ状連結部４を介して一体に形成されているので、組立作業はヒンジ状連結部４を折り曲げて本体２と蓋体３とを合わせて一体にする操作だけで良く、複数の部材を結合させる操作はないので、容易に組み立てることができるし、組立後は係止突起７と係止孔８とから成る係止機構が作用し自然に開放されることがない。
【００１３】
また、本体に保持壁９を設け、コンタクトピン１０は本体２左右の保持壁内に埋設するように挿入保持され、本体２と蓋体３とを合わせる前にコンタクトピン１０は確実に固定されるので、組み立てる際にコンタクトピン１０が浮いて組立操作の邪魔になったり、コンタクトピン１０が絶縁体組立の際に変形するようなことが無い。
そして、図２の外部導体内に組み付けて接続端子を形成した状態の断面図に示すように、接続端子の組立は従来と同様に、組み立てた絶縁体１を外部導体２３内に前方から挿入して組み立てればよい。尚、図２の絶縁体は図１のＡ−Ａ矢示断面図を示している。
【００１４】
図３は、本発明の他の実施の形態を示し、前面２ｂの中心導体挿入部全体を本体２に設けた場合を示している。このように背面の係止溝と同様に前面も本体側に一体に形成しても良いし、また蓋体側に一体に形成しても良い。
更に、上記実施の形態ではコンタクトピンが膨らみ部を有して形成されているが、プレス加工又は切削加工により全体を棒状に形成したものであっても良く、その場合保持手段は、その棒状体の任意の部位を挟持するように形成すれば良い。その他、本発明の趣旨を逸脱しない範囲で各部の形状並びに構成を適宜変更して具体化することも可能である。
【００１５】
【発明の効果】
以上詳述したように、請求項１の発明によれば、絶縁体の本体と蓋体とがヒンジ状連結部を介して連結されて一体に形成されているので、組立作業はヒンジ状連結部を中心とした折り曲げ操作だけで良く、容易に組み立てることができる。
また、対向する一対の保持壁を背面に連続して形成するとともに、保持壁により膨らみ部を挟持可能とし、端子引き出し部を送通溝から突出させた状態で膨らみ部を保持壁間へ埋設することにより、蓋体を本体に被せる以前に、本体にコンタクトピンを縦置き姿勢で保持可能としているため、絶縁体を組み立てる際にコンタクトピンが邪魔になるようなことが無い。
【図面の簡単な説明】
【図１】本発明の実施の形態の１例を示す同軸ケーブル接続端子の絶縁体の背部斜視図であり、（ａ）は組立前の絶縁体の形状を示し、（ｂ）は組立後の絶縁体を示している。
【図２】図１の絶縁体のＡ−Ａ矢示断面図であり、絶縁体を接栓座に組み付けた様子を示す断面説明図である。
【図３】他の実施の形態を示す組立前の絶縁体の斜視図である。
【図４】従来の同軸ケーブルの接続端子の絶縁体構造を示す、接続端子の組立図である。
【符号の説明】
１・・絶縁体、２・・本体、２ａ・・背面、２ｂ・・前面、３・・蓋体、３ｂ・・前面、４・・ヒンジ状連結部、９・・保持壁。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an insulator structure of a connection terminal for connecting a coaxial cable.
[0002]
[Prior art]
FIG. 4 shows an insulator structure of a connection terminal for connecting a conventional coaxial cable. As shown in the drawing, the insulator 20 is formed of a cylindrical outer insulator 21 and an inner insulator 22 through which the contact pins 25 are inserted and fixed, and the assembly of the insulator is performed through the inner insulator 22. After the terminal lead portion 25a of the contact pin 25 is inserted into the hole 22a to fix the contact pin 25, the outer insulator 21 is fed so as to cover from the tip direction of the contact pin, covering the contact pin 25 and the inner insulator 22 The outer insulator 21 and the inner insulator 22 are integrated.
Then, the insulator 20 is inserted into the cylindrical outer conductor 23 constituting the plug, and the claw portion 21a is locked in the locking groove 24a formed in the housing wall 24 to fix the insulator 20. The connection terminal of the coaxial cable was formed.
[0003]
[Problems to be solved by the invention]
However, since the conventional insulator 20 is composed of two separated members, the handling is troublesome, and the assembly of the insulator 20 is performed after the contact pin 25 is assembled. When assembling, the contact pin 25 must be contacted with care so that the contact pin 25 is not deformed and the contact pin 25 is not unlocked, which is a troublesome operation.
[0004]
Then, this invention makes it a subject to provide the insulator of the coaxial cable connection terminal which is easy to assemble and handle in view of the said subject.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention according to claim 1 is capable of fixing a contact pin having a bulging portion at the center and sandwiching the central conductor of the coaxial cable on the central axis, A cylindrical coaxial cable connecting terminal insulator having an insertion hole into which a conductor is inserted and having a feed groove for projecting a terminal lead portion of the contact pin formed in a vertical direction on the back surface, The main body and the lid are formed in an outer shape that is divided in half in the central axis direction, the back surface is provided on the main body, and the main body and the lid are arranged on the inner side from the circumferential line of the cylindrical body. A pair of opposing holding walls are continuously formed on the back surface, the bulging portion can be sandwiched by the holding walls, and the terminal lead-out portion is connected to the terminal drawing portion. Is it a transmission groove? By embedding the bulging portion between the holding walls in a protruding state, the contact pin can be held in a vertically placed posture on the main body before the cover is put on the main body. .
[0007]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a perspective view from the back side of an insulator of a coaxial cable connection terminal according to the present invention, (a) shows the shape of the insulator before assembly, and (b) shows an assembled state.
In the figure, the insulator 1 has a substantially cylindrical shape, and is composed of a main body 2 and a lid 3 whose outer shape is halved in the direction of the central axis, and the two hinge-like connecting portions 3 are continuously formed. And are integrally formed of a synthetic resin. In addition, as a material of the synthetic resin, polyethylene or polypropylene which is relatively flexible and easily forms a hinge-like connecting portion is suitable.
[0008]
The main body 2 is provided with the entire back surface 2a. The back surface 2a is a surface that is disposed on the inner surface of the housing when the connection terminals are formed, and has a feeding groove 5 that protrudes and holds the terminal lead portion 10a of the contact pin 10. Is formed. The feed groove 5 is formed to extend to the upper end of the back surface 2a in the figure, and is formed so that the contact pin 10 can be passed from above. The contact pin 10 is formed by pressing a spring conductive material such as a phosphor bronze plate so as to have a bulging portion 10b in the center.
[0009]
And the holding wall 9 which is a holding means of the contact pin 10 is formed in the right and left of the back surface 2a. The holding wall 9 is formed according to the shape of the bulging portion 10b of the contact pin 10, covers the entire bulging portion, and holds and holds the bulging portion 10b from the left and right.
Further, the front surface 2b side is formed in a state in which the insertion port 6 for inserting the central conductor of the coaxial cable is divided in half, and the lid body 3 is covered when the lid body 3 is put on the approximate center of the outer side 2c serving as an open end. A locking projection 7 for locking is provided.
[0010]
The lid 3 is opened at the rear, and a front half 3a is formed with a half-inserted insertion port 6. A locking hole 8 for inserting and locking the locking projection 7 is formed at the approximate center of the outer side 3c corresponding to the locking projection 7 formed on the main body 2.
Reference numeral 12 denotes a locking side for locking the insulator 1 to the external conductor 23 when forming the connection terminal, and 13 is a square hole for locking.
Further, the inner sides 2d and 3d provided with the hinge-like connecting portion 4 are formed with flat cutouts 14 along the central axis direction of the insulator, and the hinge-like connecting portion 4 does not protrude from the circumferential line of the insulator 1. It is like that.
[0011]
In assembling the insulator, first, the bulging portion 10b is inserted between the holding walls 9 while the terminal lead portion 10a of the contact pin 10 is inserted into the feed groove 5 of the main body 2, and the contact pin 10 is fixed in the main body. . And if the hinge-shaped connection part 4 is bent and the opening surfaces of the cover body 3 and the main body 2 are matched, the locking projection 7 is inserted and locked in the locking hole 8 and fixed in a covered state.
[0012]
Thus, since the main body 2 and the lid body 3 are integrally formed via the hinge-shaped connecting portion 4, the assembly work is performed by bending the hinge-shaped connecting portion 4 and combining the main body 2 and the lid body 3. Since there is no operation to join a plurality of members, it is easy to assemble, and after assembly, a locking mechanism consisting of a locking projection 7 and a locking hole 8 acts to open naturally. It will not be done.
[0013]
Also, a holding wall 9 is provided in the main body, and the contact pin 10 is inserted and held so as to be embedded in the left and right holding walls of the main body 2, and the contact pin 10 is securely fixed before the main body 2 and the lid 3 are combined. Therefore, the contact pin 10 does not float during assembly and does not interfere with the assembly operation, or the contact pin 10 does not deform during assembly of the insulator.
Then, as shown in the sectional view of the state in which the connection terminal is formed by assembling in the outer conductor of FIG. 2, the assembly of the connection terminal is performed by inserting the assembled insulator 1 into the outer conductor 23 from the front as in the prior art. And assemble. In addition, the insulator of FIG. 2 has shown AA arrow sectional drawing of FIG.
[0014]
FIG. 3 shows another embodiment of the present invention, and shows a case where the entire center conductor insertion portion of the front surface 2b is provided in the main body 2. FIG. As described above, the front surface may be integrally formed on the main body side as well as the locking groove on the back surface, or may be integrally formed on the lid side.
Further, in the above embodiment, the contact pin is formed to have a bulge portion, but it may be formed into a rod shape by pressing or cutting, in which case the holding means is the rod-like body. What is necessary is just to form so that arbitrary site | parts may be clamped. In addition, the shape and configuration of each part may be changed as appropriate without departing from the spirit of the present invention.
[0015]
【The invention's effect】
As described above in detail, according to the first aspect of the invention, the main body of the insulator and the lid are connected to each other via the hinge-like connecting portion and are integrally formed. It is only necessary to perform a bending operation centering on the center, and can be assembled easily.
In addition, a pair of opposing holding walls are continuously formed on the back surface, the bulging portion can be sandwiched by the holding walls, and the bulging portion is embedded between the holding walls in a state where the terminal lead-out portion protrudes from the feed groove. Thus, since the contact pin can be held in the vertical position on the main body before the cover is put on the main body, the contact pin does not get in the way when assembling the insulator.
[Brief description of the drawings]
FIG. 1 is a rear perspective view of an insulator of a coaxial cable connection terminal showing an example of an embodiment of the present invention, (a) showing the shape of the insulator before assembly, and (b) after assembly. An insulator is shown.
FIG. 2 is a cross-sectional view taken along the line AA of the insulator of FIG. 1, and is a cross-sectional explanatory view showing a state in which the insulator is assembled to the spigot seat.
FIG. 3 is a perspective view of an insulator before assembly showing another embodiment.
FIG. 4 is an assembly drawing of a connection terminal showing an insulator structure of a connection terminal of a conventional coaxial cable.
[Explanation of symbols]
1. Insulator, 2. Main body, 2a, Back, 2b, Front, 3. Lid, 3b, Front, 4. Hinge-like connecting part, 9. Holding wall.

Claims

A contact pin having a bulge portion at the center and holding the central conductor of the coaxial cable on the central axis can be fixed, and has an insertion hole for inserting the central conductor of the coaxial cable on the front surface, and the contact pin on the rear surface. A cylindrical coaxial cable connection terminal insulator in which a feed groove for projecting the terminal lead-out portion is engraved in the vertical direction ,
It consists of a body and a lid which are formed a cylindrical body in the axial direction by half the contour, provided with the back to the body, and its body and a lid, and inwardly from the circumference line of the cylindrical body While connecting via a hinge-like connecting part formed on the side surface ,
A pair of opposing holding walls are continuously formed on the back surface, and the bulging portion can be sandwiched by the holding walls,
The contact pin is placed vertically on the main body before the cover is put on the main body by embedding the bulging portion between the holding walls in a state where the terminal lead-out portion protrudes from the transmission groove. Insulator for coaxial cable connection terminal, characterized in that it can be held by