JP2607221B2 - Connector plug for coaxial cable - Google Patents
Connector plug for coaxial cableInfo
- Publication number
- JP2607221B2 JP2607221B2 JP6040647A JP4064794A JP2607221B2 JP 2607221 B2 JP2607221 B2 JP 2607221B2 JP 6040647 A JP6040647 A JP 6040647A JP 4064794 A JP4064794 A JP 4064794A JP 2607221 B2 JP2607221 B2 JP 2607221B2
- Authority
- JP
- Japan
- Prior art keywords
- conductor
- cylindrical
- center contact
- tail end
- coaxial cable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Coupling Device And Connection With Printed Circuit (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は、一般にはF型防水プラ
グと呼ばれている同軸ケーブル用コネクタプラグに関す
るものであり、更に詳しくは各種の高周波機器に設けら
れたF型接栓に対してF型同軸ケーブルを接続するため
にケーブル端部に取りつけられるF型防水コネクタプラ
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 connector plug for a coaxial cable generally called an F-type waterproof plug, and more particularly, to an F-type plug provided in various high-frequency devices. The present invention relates to an F-type waterproof connector plug attached to an end of a cable for connecting an F-type coaxial cable.
【0002】[0002]
【従来の技術】FL型、HFL型、あるいはFB型等の
各種のF型高周波同軸ケーブルは、いずれにせよ中心の
芯線導体と、該芯線導体の外周を被覆した内部絶縁層
と、該内部絶縁層の外周を被覆した一層又は複数層の外
部導体シース層と、該外部導体シース層の外周を被覆し
た外部絶縁被覆とからなる同心状構造を備えている。2. Description of the Related Art Various types of F type high frequency coaxial cables such as FL type, HFL type and FB type are provided with a central core conductor, an internal insulating layer covering the outer periphery of the core conductor, and an internal insulating layer. A concentric structure comprising one or more outer conductor sheath layers covering the outer periphery of the layer and an outer insulating coating covering the outer periphery of the outer conductor sheath layer is provided.
【0003】このようなF型同軸ケーブルの端部に接続
される防水コネクタプラグは、同軸ケーブルの芯線導体
先端部を受け入れるために軸方向の孔が尾端に開口され
た中心コンタクト導体を内部に絶縁状に保持する筒状本
体金具によって構成されている。この筒状金具本体は、
前記中心コンタクト導体と対をなす外部コンタクト導体
としての機能の少なくとも一部を担い、一般には筒状本
体金具の先端側にF型接栓と螺合する締付ナットが回動
自在に取りつけられている。A waterproof connector plug connected to the end of such an F-type coaxial cable has a center contact conductor having an axial hole opened at a tail end for receiving a core conductor tip of the coaxial cable. It is composed of a cylindrical main body fitting that is held in an insulating manner. This cylindrical fitting body
A tightening nut, which functions at least partially as an external contact conductor paired with the center contact conductor and is generally screwed to an F-type plug, is rotatably attached to a distal end side of the cylindrical main body fitting. I have.
【0004】前記筒状本体金具の内部には筒状導体フェ
ルールが前記中心コンタクト導体の尾端の近傍に同軸状
に間隔をあけて配置され、この筒状導体フェルールの尾
端側には前記同軸ケーブルの端面から内部に進入して該
同軸ケーブルの外部導体シース層に面接触する先端の鋭
利な筒体が形成されており、このようにして前記筒状本
体金具との電気的接続が筒状導体フェルールによって果
たされる。A cylindrical conductor ferrule is arranged inside the cylindrical main body fitting at a coaxial distance from the tail end of the center contact conductor, and is coaxially arranged at the tail end side of the cylindrical conductor ferrule. A sharp-pointed cylindrical body that enters the inside from the end face of the cable and is in surface contact with the outer conductor sheath layer of the coaxial cable is formed, and thus the electrical connection with the cylindrical main body fitting is cylindrical. Performed by conductor ferrules.
【0005】前記筒状本体金具の外周には尾端側から前
記筒状導体フェルールを囲むように筒状締付金具が螺合
され、この筒状締付金具の内部には、前記筒状締付金具
が前記筒状金具本体に螺入されたときに前記筒状締付金
具の内部で径方向内方に変形することにより前記筒状導
体フェルールと前記外部導体シース層との接触圧の確保
及び前記同軸ケーブルの外部絶縁被覆に対するクランプ
を果たす絶縁体製の筒状クランプが配置されている。[0005] A cylindrical fastener is screwed around the outer periphery of the cylindrical main body from the tail end side so as to surround the cylindrical conductor ferrule. The cylindrical fastener is provided inside the cylindrical fastener. When the metal fitting is screwed into the cylindrical metal fitting main body, it is deformed radially inward inside the cylindrical metal fitting to secure a contact pressure between the cylindrical conductive ferrule and the external conductive sheath layer. And a tubular clamp made of an insulator, which clamps the outer insulating coating of the coaxial cable.
【0006】この他、各嵌め合い部分や隙間部分には絶
縁リングやブッシュ、或はOリングパッキン等が配置さ
れ、適切な組立接続状態ではプラグ内部が外部に対して
ほぼ完全な密閉状態に保持されるように構成されてい
る。In addition, an insulating ring, a bush, an O-ring packing, and the like are arranged in each of the fitting portions and the gap portions, so that the inside of the plug is kept almost completely sealed from the outside in an appropriate assembly and connection state. It is configured to be.
【0007】[0007]
【発明が解決しようとする課題】このような従来のF型
防水コネクタプラグにおいて、特にケーブルの芯線導体
とプラグの中心コンタクト導体との電気的接続の信頼性
を確保するために、同軸ケーブル先端に対するコネクタ
プラグの接続作業に際して、芯線導体の先端を中心コン
タクト導体の尾端の孔内に挿入したのち、圧着工具によ
って中心コンタクト導体の尾端部を縮径状に圧着するこ
とが一般的に行われているが、この作業は細かな手作業
であることと、圧着力の加減が不適切であると却って接
続の信頼性が低下し、作業に熟練が要求されることなど
の不都合がある。In such a conventional F-type waterproof connector plug, in particular, in order to ensure the reliability of the electrical connection between the core conductor of the cable and the center contact conductor of the plug, the F-type waterproof connector plug is provided with the tip of the coaxial cable. When connecting the connector plug, it is common practice to insert the tip of the core conductor into the hole at the tail end of the center contact conductor and then crimp the tail end of the center contact conductor to a reduced diameter with a crimping tool. However, this operation is inconvenient in that it is a fine manual operation, and if the crimping force is improperly adjusted, the reliability of the connection is rather deteriorated and the operation requires skill.
【0008】一方、上述のような圧着工具による圧着作
業を不要とするために、前記中心コンタクト導体の尾端
面を先端側に傾斜する環状テーパー面に形成し、前記筒
状締付金具を前記筒状金具本体に螺入して締め込むとき
に前記筒状締付金具の内部で軸方向移動する絶縁体リン
グの動きを利用して、前記環状テーパー面に軸方向の力
を与えることにより中心コンタクト導体の尾端部を縮径
状に圧着するようにしたF型コネクタが例えば特開昭6
1−32976号公報によって公知である。On the other hand, in order to eliminate the need for the crimping operation by the crimping tool as described above, the tail end surface of the center contact conductor is formed in an annular tapered surface inclined to the front end side, and the cylindrical fastener is connected to the cylinder. The center contact is provided by applying an axial force to the annular tapered surface by utilizing the movement of an insulator ring that moves axially inside the tubular fastener when screwing and tightening into the cylindrical body. An F-type connector in which the tail end of a conductor is crimped to a reduced diameter is disclosed in, for example,
It is known from 1-32976.
【0009】しかしながら、このような従来の自己圧着
方式のF型コネクタでは、前記中心コンタクト導体の尾
端面が先端側に傾斜する環状テーパー面に形成され、こ
のテーパー面と作用する絶縁体リングが複雑な形状で中
心コンタクト導体から離反可能な別部品として構成され
ているため、ケーブルへの取り付け時に不安定な現場作
業で複雑な形状の複数の小さな精密部品を最新の注意を
払って組み立てなければならず、また現場作業で取り扱
う部品点数が多くなり、更には締付時に筒状本体金具の
内部で絶縁体リングが必ずしも正しい位置関係で環状テ
ーパー面に当接するとは限らないので、ややもすると圧
着が不適切になるなど、数多くの問題点が指摘されてい
る。However, in such a conventional self-crimping F-type connector, the tail end surface of the center contact conductor is formed in an annular tapered surface inclined to the tip end side, and an insulator ring acting on the tapered surface is complicated. Due to its unusual shape and being configured as a separate part that can be separated from the center contact conductor, it is necessary to assemble multiple small precision parts of complex shapes with the latest care in unstable field work when attaching to the cable In addition, the number of parts handled in the field work increases, and the insulator ring does not always abut the annular tapered surface in the correct positional relationship inside the cylindrical main body fitting at the time of tightening. A number of problems have been pointed out, such as the inadequacy of
【0010】本発明の主目的は、いずれにせよ同軸ケー
ブル先端への取付作業が簡便で安定した圧着効果を得る
ことのできる自己圧着方式の同軸ケーブル用コネクタプ
ラグを提供することである。A main object of the present invention is to provide a self-crimping type coaxial cable connector plug which can easily and stably obtain a crimping effect at the distal end of the coaxial cable.
【0011】本発明の別の目的は、複雑な形状の絶縁体
リングを不要とし、且つケーブルへの取り付け時に不安
定な現場作業で組み立てる部品点数を極力少なくするこ
とのできる自己圧着方式の同軸ケーブル用コネクタプラ
グを提供することである。Another object of the present invention is to provide a self-crimping type coaxial cable which does not require an insulator ring having a complicated shape, and can minimize the number of parts to be assembled in an unstable field work when attaching to a cable. The purpose of the present invention is to provide a connector plug.
【0012】本発明の更に別の目的は、締付時に筒状本
体金具の内部で絶縁体リングが常に正しい位置関係で中
心コンタクト導体のテーパー面に作用して安定な圧着効
果を得ることができる自己圧着方式の同軸ケーブル用コ
ネクタプラグを提供することである。Still another object of the present invention is to provide a stable press-fitting effect in which the insulator ring always acts on the tapered surface of the center contact conductor in the correct positional relationship inside the cylindrical main body fitting at the time of tightening. An object of the present invention is to provide a self-crimping type connector plug for a coaxial cable.
【0013】本発明の更に別の目的は、同軸ケーブルの
芯線導体の線径の大小に関してある程度の範囲で共通の
部品で対応できるようにした自己圧着方式の同軸ケーブ
ル用コネクタプラグを提供することである。Still another object of the present invention is to provide a self-crimping type coaxial cable connector plug which is capable of coping with the size of the core wire conductor of the coaxial cable in a certain range with common parts. is there.
【0014】[0014]
【課題を解決するための手段】請求項1による発明は、
同軸ケーブルの芯線導体先端部を受け入れるために軸方
向の孔が尾端に開口された中心コンタクト導体と、前記
中心コンタクト導体を内部に絶縁状に保持すると共に前
記中心コンタクト導体と対をなす外部コンタクト導体と
しての機能の少なくとも一部を担う筒状本体金具と、前
記筒状本体金具の内部にて前記中心コンタクト導体の尾
端の近傍に同軸状に間隔をあけて配置されると共に前記
同軸ケーブルの端面から内部に進入して該同軸ケーブル
の外部導体シース層と前記筒状本体金具との電気的接続
を果たす筒状導体フェルールと、前記筒状導体フェルー
ルを囲むように前記筒状本体金具の尾端側から外周に螺
合される筒状締付金具と、前記筒状締付金具が前記筒状
本体金具に螺入されたときに前記筒状締付金具の内部で
径方向内方に変形することにより前記筒状導体フェルー
ルと前記外部導体シース層との接触圧の確保及び前記同
軸ケーブルの外部絶縁被覆に対するクランプを果たす筒
状クランプ手段とを備えた同軸ケーブル用コネクタプラ
グであって、前記中心コンタクト導体の外周面には尾端
から先端方向に間隔をおいた位置に凹部が形成され、該
凹部の底面は先端側でテーパー面によって前記外周面に
連なると共に尾端側で前記外周面との間に段部を形成
し、前記筒状本体金具の内部には、前記筒状締付金具が
前記筒状本体金具に螺入されたときに前記筒状導体フェ
ルールを介して先端側へ押圧移動される環状絶縁体が前
記凹部によって前記中心コンタクト導体の尾端近傍に係
合して配置され、前記環状絶縁体には前記押圧移動時に
前記テーパー面と協動することにより前記中心コンタク
ト導体の尾端部を径方向内方に押圧する締付部が設けら
れていることを特徴とするものである。According to the first aspect of the present invention,
A center contact conductor having an axial hole opened at a tail end for receiving a tip end of a core conductor of a coaxial cable; and an external contact paired with the center contact conductor while holding the center contact conductor insulated therein. A cylindrical main body fitting that performs at least a part of the function as a conductor, and a coaxial cable that is coaxially arranged inside the cylindrical main body fitting near a tail end of the center contact conductor and is spaced apart coaxially; A tubular conductor ferrule which enters the inside from the end face and performs an electrical connection between the outer conductor sheath layer of the coaxial cable and the tubular body fitting; and a tail of the tubular body fitting surrounding the tubular conductor ferrule. A cylindrical fastener that is screwed to the outer periphery from an end side, and deforms radially inward inside the cylindrical fastener when the cylindrical fastener is screwed into the cylindrical main body. A connector plug for a coaxial cable comprising: a cylindrical clamp means for securing contact pressure between the cylindrical conductor ferrule and the outer conductor sheath layer and clamping the coaxial cable against an outer insulating coating of the coaxial cable, A concave portion is formed in the outer peripheral surface of the center contact conductor at a position spaced from the tail end in the distal direction, and the bottom surface of the concave portion is connected to the outer peripheral surface by a tapered surface on the distal end side and is connected to the outer peripheral surface on the tail end side. A step portion is formed between the cylindrical main body fittings, and when the cylindrical tightening fitting is screwed into the cylindrical main body fitting, it is pressed toward the distal end via the cylindrical conductor ferrule. An annular insulator to be moved is disposed in engagement with the vicinity of the tail end of the center contact conductor by the recess, and the annular insulator cooperates with the tapered surface during the pressing movement. It is characterized in that the tightening portion which presses the tail end of the serial central contact conductor radially inwards are provided.
【0015】請求項2による発明は、請求項1に記載の
同軸ケーブル用コネクタプラグにおいて、前記中心コン
タクト導体の尾端から前記孔の形成領域に向かって軸方
向のすり割りが形成されていることを特徴とするもので
ある。According to a second aspect of the present invention, in the connector plug for a coaxial cable according to the first aspect, an axial slit is formed from a tail end of the center contact conductor toward a region where the hole is formed. It is characterized by the following.
【0016】[0016]
【作用】請求項1による発明によれば、前記中心コンタ
クト導体の尾端面は前記自己圧着機能のための縮径作用
に関与しない。代わりに、前記中心コンタクト導体の外
周面には尾端から先端方向に間隔をおいた位置に凹部が
形成されている。この凹部の底面は、先端側でテーパー
面によって前記外周面に連なると共に尾端側で前記外周
面との間に段部を形成している。この凹部は全周に亙る
連続凹部または断続する部分的な凹部のいずれでも良
い。According to the first aspect of the present invention, the tail end surface of the center contact conductor does not participate in the diameter reducing operation for the self-compression bonding function. Instead, a recess is formed on the outer peripheral surface of the center contact conductor at a position spaced from the tail end in the distal direction. The bottom surface of the concave portion is connected to the outer peripheral surface by a tapered surface on the distal end side, and forms a step between the outer peripheral surface on the tail end side. The recess may be a continuous recess over the entire circumference or a partial recess intermittent.
【0017】また前記筒状本体金具の内部には、前述の
絶縁体リングの代わりに環状絶縁体が前記凹部によって
前記中心コンタクト導体の尾端近傍に係合して配置され
ており、これにより環状絶縁体は比較的単純な形状で済
むと共に、プラグ内部の精密部品である中心コンタクト
導体と筒状導体フェルールとを環状絶縁体と共に互いに
分離しない一つの部品セットとして現場での組立作業に
供することができることになる。In addition, inside the cylindrical main body fitting, an annular insulator is disposed by being engaged with the vicinity of the tail end of the center contact conductor by the concave portion instead of the above-mentioned insulator ring. The insulator can have a relatively simple shape, and the center contact conductor and the cylindrical conductor ferrule, which are precision components inside the plug, can be used together with the ring insulator as a single component set that is not separated from each other for assembly work on site. You can do it.
【0018】この環状絶縁体は、前記筒状締付金具が前
記筒状本体金具に螺入されたときに前記筒状導体フェル
ールを介して先端側へ押圧移動されるが、前記環状絶縁
体には、前記押圧移動時に前記テーパー面と協動するこ
とにより前記中心コンタクト導体の尾端部を径方向内方
に押圧する締付部が設けられており、しかも環状絶縁体
は、現場での組立作業時には既に中心コンタクト導体の
外周面の尾端から先端側へ間隔をおいた位置に設けられ
た前記凹部に係合されているので、締付時に筒状本体金
具の内部で環状絶縁体が偏心または離心運動することが
なく、常に正しい位置関係で中心コンタクト導体のテー
パー面に作用して安定な圧着効果を得ることができる。This annular insulator is pushed and moved toward the distal end via the tubular conductor ferrule when the tubular fastening fitting is screwed into the tubular main body fitting. Is provided with a tightening portion for pressing the tail end of the center contact conductor inward in the radial direction by cooperating with the tapered surface during the pressing movement, and furthermore, the annular insulator is assembled on site. At the time of work, the annular insulator is already eccentric inside the cylindrical main body fitting when tightening because it is already engaged in the recess provided at a position spaced from the tail end of the outer peripheral surface of the center contact conductor to the tip end side. Alternatively, a stable crimping effect can be obtained by always acting on the tapered surface of the center contact conductor in a correct positional relationship without eccentric movement.
【0019】請求項2の発明によれば、更に加えて同軸
ケーブルの芯線導体の線径の大小に関してある程度の範
囲で共通の部品で対応できるという効果を奏することが
できる。即ち、中心コンタクト導体の尾端に開口する孔
の内径は、本来、接続対象の同軸ケーブルの芯線導体の
外形に対応して定められるが、請求項2に記載の発明に
よれば、前記中心コンタクト導体の尾端から前記孔の形
成領域に向かって軸方向のすり割りが形成されているこ
とから、ケーブルの芯線導体の径が孔の内径よりも小さ
くても、前記自己圧着機能による中心コンタクト導体の
尾端部の縮径変形能が大きくなるため、前記テーパー面
の有効高さの範囲内で比較的小径の芯線導体に対しても
十分な圧着効果で電気的接続の信頼性を確保できる。According to the second aspect of the present invention, in addition to the above, there is an effect that common parts can cope with the size of the wire diameter of the core conductor of the coaxial cable within a certain range. That is, the inner diameter of the hole opened at the tail end of the center contact conductor is originally determined in accordance with the outer shape of the core conductor of the coaxial cable to be connected. Since the slit in the axial direction is formed from the tail end of the conductor toward the hole forming region, even if the diameter of the core conductor of the cable is smaller than the inner diameter of the hole, the center contact conductor by the self-crimping function is provided. Since the diameter-reducing deformability of the tail end becomes large, the reliability of the electrical connection can be secured with a sufficient crimping effect even for a core conductor having a relatively small diameter within the effective height of the tapered surface.
【0020】好ましい変形例では、前記すり割りが前記
尾端で閉じ気味の状態になるように中心コンタクト導体
の尾端部が予成形され、これにより、接続作業に際して
ケーブルの芯線導体先端部を前記孔に挿入したときに中
心コンタクト導体の尾端部がその弾性によって芯線導体
を挟着し、手を離しても芯線導体が孔から抜け落ちない
という仮押えの効果を得ることができる。またこの場
合、中心コンタクト導体の尾端面を擂り鉢の内面状に形
成しておくと芯線導体の挿入が容易となる。In a preferred modification, the tail end of the center contact conductor is preformed so that the slit is slightly closed at the tail end, whereby the tip end of the core conductor of the cable is connected during the connection operation. When inserted into the hole, the tail end portion of the center contact conductor sandwiches the core wire conductor due to its elasticity, and the effect of temporary holding that the core wire conductor does not fall out of the hole even when the hand is released can be obtained. In this case, if the tail end face of the center contact conductor is formed in the inner surface of the mortar, the insertion of the core conductor becomes easy.
【0021】[0021]
【実施例】図1において、A図は本発明の一実施例に係
る同軸ケーブル用コネクタプラグの締付前の状態におけ
る断面図、B図はその中心コンタクト導体部端部近傍の
拡大断面図である。また図2において、A図は本実施例
に係る同軸ケーブル用コネクタプラグの締付後の状態に
おける断面図、B図はその中心コンタクト導体部端部近
傍の拡大断面図である。更に図3は中心コンタクト導体
とその関連部品との組立を示す分解斜視図である。いず
れも図が複雑になるのを避けるために同軸ケーブルを省
略した内容で図示されている。1A is a sectional view of a coaxial cable connector plug according to an embodiment of the present invention in a state before tightening, and FIG. 1B is an enlarged sectional view of the vicinity of an end of a center contact conductor. is there. 2A is a cross-sectional view of the coaxial cable connector plug according to the present embodiment after being tightened, and FIG. 2B is an enlarged cross-sectional view near the center contact conductor end. FIG. 3 is an exploded perspective view showing the assembly of the center contact conductor and its related parts. In each case, coaxial cables are omitted to avoid complicating the figure.
【0022】本実施例は、F型同軸ケーブルの端部に接
続される防水コネクタプラグの場合を示しており、この
プラグは、接続対象の接栓に螺合すべき六角締付ナット
1をCリング8によって先端に回動自在に取りつけ、締
付ナット1の内面側にOリングパッキン7を介装した筒
状本体金具3を備えている。この筒状本体金具3の外面
は六角形状に形成されている。The present embodiment shows a case of a waterproof connector plug connected to the end of an F-type coaxial cable. This plug uses a hexagonal tightening nut 1 to be screwed to a plug to be connected. A cylindrical main body fitting 3 is rotatably attached to the distal end by a ring 8 and has an O-ring packing 7 interposed on the inner surface side of the tightening nut 1. The outer surface of the cylindrical main body fitting 3 is formed in a hexagonal shape.
【0023】この筒状本体金具3の先端側には、中心貫
通孔を有する絶縁体9が圧入されており、この絶縁体9
は、その中心貫通孔によって中心コンタクト導体2を絶
縁された状態で中心位置に保持し、この中心コンタクト
導体2は前記絶縁体9の中心貫通孔に挿入自在である。
中心コンタクト導体2の尾端には、図示しない同軸ケー
ブルの芯線導体先端部を受け入れるために軸方向の孔2
aが開口されており、この開口の端面は、図3にも示す
ように擂り鉢内面状の内向きテーパー面2bとなってい
る。筒状金具本体3は、前記中心コンタクト導体2と対
をなす外部コンタクト導体としての機能を前記締付ナッ
ト1と共に担うものである。An insulator 9 having a central through hole is press-fitted into the distal end side of the cylindrical main body fitting 3.
The center contact conductor 2 is held at the center position while being insulated by the center through hole. The center contact conductor 2 can be inserted into the center through hole of the insulator 9.
The tail end of the center contact conductor 2 has an axial hole 2 for receiving a core conductor tip of a coaxial cable (not shown).
a is opened, and the end face of this opening is an inwardly tapered surface 2b in the shape of a mortar as shown in FIG. The cylindrical metal body 3 has a function as an external contact conductor paired with the center contact conductor 2 together with the tightening nut 1.
【0024】前記筒状本体金具3の内部には、先端側に
すり割り付きの円筒部4aを向けた筒状導体フェルール
4が前記中心コンタクト導体2の尾端の近傍に同軸状に
間隔をあけて配置され、前記円筒部4aの外周面は筒状
本体金具3の内面と面接触している。筒状導体フェルー
ル4の尾端側には、同軸ケーブルの端面から被覆内部に
進入して該ケーブルの外部導体シース層に面接触する先
端の鋭利な筒体4bが一体形成されており、これによ
り、同軸ケーブルの外部導体シース層と筒状本体金具3
との電気的接続が筒状導体フェルール4によって果たさ
れるようになっている。In the inside of the cylindrical main body fitting 3, a cylindrical conductor ferrule 4 having a slotted cylindrical portion 4a directed to the front end side is coaxially spaced near the tail end of the center contact conductor 2. The outer peripheral surface of the cylindrical portion 4 a is in surface contact with the inner surface of the cylindrical main body 3. On the tail end side of the cylindrical conductor ferrule 4, a sharp cylindrical body 4b having a tip which enters the inside of the sheath from the end surface of the coaxial cable and comes into surface contact with the outer conductor sheath layer of the cable is integrally formed. , Outer conductor sheath layer of coaxial cable and cylindrical main body fitting 3
Is electrically connected to the conductor ferrule 4.
【0025】前記筒状本体金具3の外周には尾端側から
前記筒状導体フェルール4を包み込むように筒状締付金
具5が螺合され、この筒状締付金具5の外面も六角形状
に形成されている。筒状締付金具5の内部には、絶縁体
製の筒状クランプ13がストップリング12によって相
対回動可能に取りつけられており、このクランプ13
は、筒状締付金具5が前記筒状金具本体3に所定の締め
込み位置まで一杯に螺入されたときに前記筒状締付金具
5の内部で筒状本体金具3の尾端テーパー内面と作用し
て径方向内方に変形可能であり、これにより前記筒状導
体フェルール4と前記外部導体シース層との接触圧の確
保及び前記同軸ケーブルの外部絶縁被覆に対するクラン
プの役目を果たしている。A cylindrical fastener 5 is screwed around the outer periphery of the cylindrical main body 3 so as to enclose the cylindrical conductor ferrule 4 from the tail end side, and the outer surface of the cylindrical fastener 5 is also hexagonally shaped. Is formed. A cylindrical clamp 13 made of an insulator is attached to the inside of the cylindrical fastener 5 by a stop ring 12 so as to be relatively rotatable.
When the tubular fastener 5 is fully screwed into the tubular body 3 to a predetermined tightening position, the inner surface of the tail end of the tubular body 3 is tapered inside the tubular fastener 5. And deforms radially inward, thereby fulfilling the role of securing the contact pressure between the cylindrical conductor ferrule 4 and the outer conductor sheath layer and clamping the outer insulating coating of the coaxial cable.
【0026】筒状本体金具3の外面にはOリングパッキ
ン10が周溝内に装着されており、このOリングパッキ
ン10は、筒状締付金具5が前記筒状金具本体3に所定
の締め込み位置まで一杯に螺入されたときに筒状締付金
具5の先端部によって図2Aに示すように筒状本体金具
3の外面との間に押え込まれ、筒状本体金具3と筒状締
付金具5との間のシールを果たす。この他、筒状締付金
具5の内部にも筒状クランプ13の尾端との間にOリン
グパッキン6が配置され、このOリングパッキン6は、
筒状締付金具5の尾端側から内部に挿入される同軸ケー
ブルの外部絶縁被覆との間のシールを果たし、このよう
にして適切な組立接続状態ではプラグ内部が外部に対し
てほぼ完全な密閉状態に保持されるように構成されてい
る。An O-ring packing 10 is mounted on the outer surface of the cylindrical main body fitting 3 in the circumferential groove, and the O-ring packing 10 is configured such that the cylindrical fastening fitting 5 is fixed to the cylindrical fitting main body 3 in a predetermined manner. When fully screwed into the insertion position, the distal end portion of the cylindrical fastener 5 is pressed between the outer surface of the cylindrical main body 3 and the cylindrical main body 3 as shown in FIG. The seal between the fastener 5 is achieved. In addition, an O-ring packing 6 is arranged inside the cylindrical fastening member 5 between the tail end of the cylindrical clamp 13 and the O-ring packing 6.
A seal is provided between the outer end of the coaxial cable inserted into the inside from the tail end side of the tubular fastener 5, so that in a proper assembled connection state, the inside of the plug is almost completely external to the outside. It is configured to be kept in a sealed state.
【0027】さて、本実施例において、前記中心コンタ
クト導体2の外周面には、図3に示すように尾端から先
端方向に間隔をおいた位置に全周凹部2cが形成され、
該凹部2cの底面は、先端側で徐々に拡径するテーパー
面2dによって前記外周面に連なると共に尾端側で前記
外周面との間に段部2eを形成している。Now, in this embodiment, on the outer peripheral surface of the center contact conductor 2, as shown in FIG. 3, a circumferential recess 2 c is formed at a position spaced from the tail end toward the tip end,
The bottom surface of the concave portion 2c is connected to the outer peripheral surface by a tapered surface 2d whose diameter gradually increases on the distal end side, and forms a step 2e between the outer peripheral surface on the tail end side.
【0028】また、前記筒状本体金具3の内部におい
て、前記中心コンタクト導体の尾端部には、先端側に前
記凹部と嵌合する小径筒部11aを一体に備えた環状絶
縁体11が前記筒状導体フェルール4の円筒部4a内に
圧入された状態で配置されており、この環状絶縁体11
は、その小径筒部11aが前記凹部2cに嵌合すること
によって前記中心コンタクト導体の尾端近傍に係合し、
これにより、図3に示すように、環状絶縁体11は従来
の絶縁体リングよりも比較的単純な形状で済むと共に、
プラグ内部の精密部品である中心コンタクト導体2と筒
状導体フェルール4とを環状絶縁体11と共に互いに分
離しない一つの部品セットとして現場での組立作業に供
することができるようになっている。In the inside of the tubular main body fitting 3, an annular insulator 11 integrally provided with a small-diameter tubular portion 11a at the tip end side of the center contact conductor at the tip end thereof for fitting into the recess is provided. The annular insulator 11 is disposed in a state of being pressed into the cylindrical portion 4 a of the cylindrical conductor ferrule 4.
Is engaged with the vicinity of the tail end of the center contact conductor by fitting the small-diameter cylindrical portion 11a into the concave portion 2c,
As a result, as shown in FIG. 3, the annular insulator 11 has a relatively simple shape as compared with the conventional insulator ring, and
The center contact conductor 2 and the cylindrical conductor ferrule 4, which are precision parts inside the plug, can be provided together with the annular insulator 11 as one set of parts that are not separated from each other, and can be provided for on-site assembly work.
【0029】この環状絶縁体11は、前記筒状締付金具
5が前記筒状本体金具3に所定の締め込み位置まで一杯
に螺入されたときに前記筒状導体フェルール4を介して
先端側へ押圧移動されるが、前記環状絶縁体11の小径
筒部11aは、前記押圧移動時に前記テーパー面2dと
協動することにより前記中心コンタクト導体2の尾端部
を径方向内方に押圧する締付部として機能する。また環
状絶縁体11は、現場での組立作業時には既に中心コン
タクト導体2の外周面の尾端から先端側へ間隔をおいた
位置に設けられた前記凹部2cに係合されているので、
締付時に筒状本体金具3の内部で環状絶縁体11が偏心
または離心運動することがなく、常に正しい位置関係で
中心コンタクト導体2のテーパー面2dに作用して安定
な圧着効果を得ることができる。When the cylindrical fastening member 5 is fully screwed into the cylindrical main body member 3 to a predetermined tightening position, the annular insulator 11 is disposed on the distal end side via the cylindrical conductor ferrule 4. The small-diameter cylindrical portion 11a of the annular insulator 11 presses the tail end of the center contact conductor 2 radially inward by cooperating with the tapered surface 2d during the pressing movement. Functions as a fastening part. In addition, since the annular insulator 11 is already engaged with the concave portion 2c provided at a position spaced from the tail end of the outer peripheral surface of the center contact conductor 2 to the distal end side at the time of assembly work on site,
The annular insulator 11 does not move eccentrically or eccentrically inside the cylindrical main body fitting 3 at the time of tightening, and always acts on the tapered surface 2d of the center contact conductor 2 in a correct positional relationship to obtain a stable crimping effect. it can.
【0030】さらに本実施例では、中心コンタクト導体
2の尾端から前記孔2aの形成領域に向かって軸方向の
すり割り2fが形成されており、これにより、ケーブル
の芯線導体の径が孔2aの内径よりも小さくても、図2
Bに示すように自己圧着機能による中心コンタクト導体
2の尾端部の縮径変形能が大きくなるため、前記テーパ
ー面11dの有効高さの範囲内で比較的小径の芯線導体
に対しても十分な圧着効果で電気的接続の信頼性を確保
できる。Further, in this embodiment, an axial slit 2f is formed from the tail end of the center contact conductor 2 to the area where the hole 2a is formed, whereby the diameter of the core conductor of the cable is reduced to the hole 2a. Fig. 2
As shown in B, since the diameter of the tail end of the center contact conductor 2 can be reduced by the self-crimping function, the diameter of the tail end of the center contact conductor 2 can be reduced sufficiently within the effective height of the tapered surface 11d. The reliability of the electrical connection can be ensured by a simple crimping effect.
【0031】特にこの場合、前記すり割り2fが中心コ
ンタクト導体の尾端に向かって徐々に閉じるように中心
コンタクト導体2の尾端部が予じめ変形されていること
が好ましく、これにより、接続作業に際してケーブルの
芯線導体先端部を前記孔2aに挿入したときに中心コン
タクト導体2の尾端部がその弾性によって芯線導体を挟
着し、手を離しても芯線導体が孔から抜け落ちないとい
う仮押えの効果を得ることができる。Particularly in this case, it is preferable that the tail end of the center contact conductor 2 is deformed in advance so that the slit 2f gradually closes toward the tail end of the center contact conductor. When the tip of the core conductor of the cable is inserted into the hole 2a during work, the tail end of the center contact conductor 2 clamps the core conductor due to its elasticity, and the core conductor does not fall out of the hole even if the hand is released. The effect of holding down can be obtained.
【0032】[0032]
【発明の効果】以上に述べたように、請求項1の発明に
よれば、プラグ内部の精密部品である中心コンタクト導
体と筒状導体フェルールを環状絶縁体と共に分離しない
一つの部品として現場での組立作業に供することがで
き、環状絶縁体は従来の絶縁体リングよりも比較的単純
な形状で済むと共に、締付時に筒状本体金具の内部で環
状絶縁体が偏心または離心運動することがなく、常に正
しい位置関係で中心コンタクト導体のテーパー面に作用
して安定な圧着効果を得ることができ、従って同軸ケー
ブル先端への取付作業が簡便で安定した圧着効果を得る
ことのできる自己圧着方式の同軸ケーブル用コネクタプ
ラグを提供することが可能である。As described above, according to the first aspect of the present invention, the center contact conductor and the cylindrical conductor ferrule, which are precision parts inside the plug, are not separated from the annular insulator together with the annular insulator. It can be used for assembling work, the annular insulator has a relatively simple shape than the conventional insulator ring, and the annular insulator does not move eccentrically or eccentrically inside the cylindrical main body fitting when tightened. The self-crimping method, which always works on the tapered surface of the center contact conductor in the correct positional relationship and can obtain a stable crimping effect, and therefore can be easily attached to the end of the coaxial cable and obtains a stable crimping effect It is possible to provide a connector plug for a coaxial cable.
【0033】また請求項2の発明によれば、前述の効果
に加えて、中心コンタクト導体の尾端から軸方向のすり
割りが形成されていることから、ケーブルの芯線導体の
径が中心コンタクト導体の孔の内径より小さくても、自
己圧着機能による中心コンタクト導体の尾端部の縮径変
形能が大きくなるため、比較的小径の芯線導体に対して
も十分な圧着効果で電気的接続の信頼性を確保でき、従
って同軸ケーブルの芯線導体の線径の大小に関してある
程度の範囲で共通の部品で対応できるという効果を奏す
ることができる。According to the second aspect of the present invention, in addition to the above-described effects, since the axial slit is formed from the tail end of the center contact conductor, the diameter of the core conductor of the cable is reduced by the center contact conductor. Even if it is smaller than the inner diameter of the hole, the diameter of the tail end of the center contact conductor can be reduced and deformed by the self-crimping function. Therefore, it is possible to obtain an effect that common components can cope with the size of the wire diameter of the core conductor of the coaxial cable within a certain range.
【図1】A図は、本発明の一実施例に係る同軸ケーブル
用コネクタプラグの締付前の状態における断面図、B図
は、その中心コンタクト導体部端部近傍の拡大断面図で
ある。FIG. 1A is a cross-sectional view of a coaxial cable connector plug according to an embodiment of the present invention in a state before tightening, and FIG. 1B is an enlarged cross-sectional view of the vicinity of an end of a center contact conductor.
【図2】A図は、本実施例に係る同軸ケーブル用コネク
タプラグの締付後の状態における断面図、B図は、その
中心コンタクト導体部端部近傍の拡大断面図である。FIG. 2A is a cross-sectional view of the coaxial cable connector plug according to the present embodiment in a state after being tightened, and FIG. 2B is an enlarged cross-sectional view near the center contact conductor end;
【図3】中心コンタクト導体とその関連部品との組立を
示す分解斜視図である。FIG. 3 is an exploded perspective view showing assembly of a center contact conductor and its related components.
1 :六角締付ナット 2 :中心コンタクト導体 2a:孔 2c:凹部 2d:テーパー面 2e:段部 2f:すり割り 3 :筒状本体金具 4 :筒状導体フェルール 5 :筒状締付金具 9 :中心貫通孔付絶縁体 11 :環状絶縁体 11a:小径筒部(締付部) 12 :ストップリング 13 :筒状クランプ 1: hexagonal tightening nut 2: central contact conductor 2a: hole 2c: concave portion 2d: tapered surface 2e: stepped portion 2f: slot 3: cylindrical main body fitting 4: cylindrical conductor ferrule 5: cylindrical fastening metal 9: Insulator with central through hole 11: Annular insulator 11a: Small-diameter cylindrical part (tightening part) 12: Stop ring 13: Cylindrical clamp
Claims (2)
れるために軸方向の孔が尾端に開口された中心コンタク
ト導体と、前記中心コンタクト導体を内部に絶縁状に保
持すると共に前記中心コンタクト導体と対をなす外部コ
ンタクト導体としての機能の少なくとも一部を担う筒状
本体金具と、前記筒状本体金具の内部にて前記中心コン
タクト導体の尾端の近傍に同軸状に間隔をあけて配置さ
れると共に前記同軸ケーブルの端面から内部に進入して
該同軸ケーブルの外部導体シース層と前記筒状本体金具
との電気的接続を果たす筒状導体フェルールと、前記筒
状導体フェルールを囲むように前記筒状本体金具の尾端
側から外周に螺合される筒状締付金具と、前記筒状締付
金具が前記筒状本体金具に螺入されたときに前記筒状締
付金具の内部で径方向内方に変形することにより前記筒
状導体フェルールと前記外部導体シース層との接触圧の
確保及び前記同軸ケーブルの外部絶縁被覆に対するクラ
ンプを果たす筒状クランプ手段とを備えた同軸ケーブル
用コネクタプラグにおいて、 前記中心コンタクト導体の外周面には尾端から先端方向
に間隔をおいた位置に凹部が形成され、該凹部の底面は
先端側でテーパー面によって前記外周面に連なると共に
尾端側で前記外周面との間に段部を形成し、 前記筒状本体金具の内部には、前記筒状締付金具が前記
筒状本体金具に螺入されたときに前記筒状導体フェルー
ルを介して先端側へ押圧移動される環状絶縁体が前記凹
部によって前記中心コンタクト導体の尾端近傍に係合し
て配置され、 前記環状絶縁体には前記押圧移動時に前記テーパー面と
協動することにより前記中心コンタクト導体の尾端部を
径方向内方に押圧する締付部が設けられていることを特
徴とする同軸ケーブル用コネクタプラグ。1. A center contact conductor having an axial hole opened at a tail end for receiving a tip end of a core conductor of a coaxial cable, the center contact conductor being held inside in an insulating manner and the center contact conductor being A tubular main body fitting that performs at least a part of the function as a pair of external contact conductors, and are coaxially spaced apart near the tail end of the center contact conductor inside the tubular main body fitting. A cylindrical conductor ferrule that enters the interior of the coaxial cable from the end face thereof and performs an electrical connection between the outer conductor sheath layer of the coaxial cable and the cylindrical main body metal fitting; and the tube so as to surround the cylindrical conductor ferrule. A cylindrical fastener that is screwed to the outer periphery from the tail end of the cylindrical main body; and a diameter inside the cylindrical fastener when the cylindrical fastener is screwed into the cylindrical main body. One A connector plug for a coaxial cable, comprising: a cylindrical clamp means for securing contact pressure between the cylindrical conductor ferrule and the outer conductor sheath layer by deforming inward and clamping the outer insulating coating of the coaxial cable. In the outer peripheral surface of the center contact conductor, a concave portion is formed at a position spaced from the tail end in the distal direction, and the bottom surface of the concave portion is connected to the outer peripheral surface by a tapered surface on the distal end side and is formed on the tail end side. A step portion is formed between the outer peripheral surface and the inside of the cylindrical main body fitting, and the distal end is formed via the cylindrical conductor ferrule when the cylindrical fastening fitting is screwed into the cylindrical main body fitting. An annular insulator that is pressed and moved to the side is disposed in engagement with the vicinity of the tail end of the center contact conductor by the concave portion, and the annular insulator cooperates with the tapered surface during the pressing movement. The center contact connector for coaxial cable plug, characterized in that the tightening portion which presses the tail end radially inward of the conductor is provided by Rukoto.
孔の形成領域に向かって軸方向のすり割りが形成されて
いることを特徴とする請求項1に記載の同軸ケーブル用
コネクタプラグ。2. The coaxial cable connector plug according to claim 1, wherein an axial slit is formed from a tail end of the center contact conductor toward a region where the hole is formed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6040647A JP2607221B2 (en) | 1994-02-16 | 1994-02-16 | Connector plug for coaxial cable |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6040647A JP2607221B2 (en) | 1994-02-16 | 1994-02-16 | Connector plug for coaxial cable |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH07230855A JPH07230855A (en) | 1995-08-29 |
JP2607221B2 true JP2607221B2 (en) | 1997-05-07 |
Family
ID=12586354
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6040647A Expired - Fee Related JP2607221B2 (en) | 1994-02-16 | 1994-02-16 | Connector plug for coaxial cable |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2607221B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4743913B2 (en) * | 2009-04-13 | 2011-08-10 | 株式会社木村電気工業 | Clamp type power cable connection device |
CN116914452B (en) * | 2023-09-14 | 2023-11-17 | 中天射频电缆有限公司 | Connector capable of mounting protective tube and cable assembly |
-
1994
- 1994-02-16 JP JP6040647A patent/JP2607221B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH07230855A (en) | 1995-08-29 |
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