JP2007121859A - Optical connector receptacle and optical connector - Google Patents

Optical connector receptacle and optical connector Download PDF

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JP2007121859A
JP2007121859A JP2005316369A JP2005316369A JP2007121859A JP 2007121859 A JP2007121859 A JP 2007121859A JP 2005316369 A JP2005316369 A JP 2005316369A JP 2005316369 A JP2005316369 A JP 2005316369A JP 2007121859 A JP2007121859 A JP 2007121859A
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optical connector
ferrule
sleeve
connector receptacle
housing
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JP2005316369A
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JP4205093B2 (en
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Daigo Saito
大悟 斉藤
Kazuhiro Takizawa
和宏 瀧澤
Masanobu Toyonaga
雅信 豊永
Kuniaki Terakawa
邦明 寺川
Hiroyuki Tanase
博之 棚瀬
Tatsuya Nakajima
龍哉 中嶋
Masafumi Awamori
雅史 粟森
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Fujikura Ltd
Nippon Telegraph and Telephone Corp
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Fujikura Ltd
Nippon Telegraph and Telephone Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical connector receptacle and an optical connector that can reduce a projection size of a plug from the optical connector receptacle. <P>SOLUTION: The optical connector receptacle comprises a housing 21 which has an insertion opening 21a, into which the optical connector plug 3 to be connected is inserted, formed at one end and also has an internal hole, which extends along the axis with both ends open, formed inside, a sleeve inserted into the internal hole, a ferrule which is mounted atop of an optical fiber 4 and fitted in the sleeve from the other end side, an energizing member which energizes the ferrule toward the one end, and a stopper 26 which engages the sleeve to fix the sleeve to the housing 21. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、光コネクタレセプタクル及び光コネクタに関するものである。   The present invention relates to an optical connector receptacle and an optical connector.

従来、光コネクタレセプタクル内に内蔵されたフェルール（以下、レセ側フェルールと記す。）は、フェルールの軸線方向への移動が規制された状態でハウジング内に装着されており、つまり、ハウジングに固定された状態になっている。一方、光コネクタレセプタクルに接続される光コネクタプラグ内に内蔵されたフェルール（以下、プラグ側フェルールと記す。）は、光コネクタレセプタクル側に付勢するスプリングによって光コネクタレセプタクル側に付勢されている。スプリングは、プラグ側フェルールの後方（光コネクタレセプタクル側の反対側）に配置されており、このスプリングによって、突き合わせ接続される両フェルールの突き合わせ力が与えられ、両フェルールは適正に接続される。（例えば、特許文献１参照。）。
特開平１０−１６０９６９号公報 Conventionally, a ferrule built in an optical connector receptacle (hereinafter referred to as a receptacle-side ferrule) is mounted in the housing in a state where movement of the ferrule in the axial direction is restricted, that is, fixed to the housing. It is in the state. On the other hand, a ferrule built in an optical connector plug connected to the optical connector receptacle (hereinafter referred to as a plug-side ferrule) is biased toward the optical connector receptacle by a spring biased toward the optical connector receptacle. . The spring is disposed behind the plug-side ferrule (opposite side of the optical connector receptacle side), and the spring provides the butt force of both ferrules to be butt-connected, so that both ferrules are properly connected. (For example, refer to Patent Document 1).
JP-A-10-160969

しかしながら、上記した従来の光コネクタレセプタクルと光コネクタプラグとからなる光コネクタでは、光コネクタプラグ側にスプリングが内蔵され、さらにそのスプリングがプラグ側フェルールの後方に配設されているため、光コネクタプラグの全長は長くなり、光コネクタレセプタクルに光コネクタプラグが接続されたとき、光コネクタレセプタクルから突出する光コネクタプラグの突出寸法（以下、プラグ突出寸法と記す。）が大きいという問題が存在する。つまり、従来の光コネクタでは、スプリングがプラグ側フェルールの後方に配設されている分、光コネクタレセプタクルからのプラグ突出寸法が大きくなっている。したがって、作業スペースが狭い場合には、光コネクタレセプタクルに対する光コネクタプラグの挿脱が行い難くなり、接続作業或いは接続解除作業の作業性が悪くなり、また、光コネクタプラグから伸びるピグテイル光ファイバの取り回し（湾曲処理等）が難しくなるという不都合が生じる。   However, in the optical connector comprising the above-described conventional optical connector receptacle and optical connector plug, a spring is built in the optical connector plug side, and further, the spring is disposed behind the plug side ferrule. The total length of the optical connector becomes long, and when the optical connector plug is connected to the optical connector receptacle, there is a problem that the protruding dimension of the optical connector plug protruding from the optical connector receptacle (hereinafter referred to as a plug protruding dimension) is large. That is, in the conventional optical connector, the protrusion of the plug from the optical connector receptacle is increased by the amount of the spring disposed behind the plug-side ferrule. Therefore, when the work space is small, it becomes difficult to insert / remove the optical connector plug to / from the optical connector receptacle, the workability of the connection work or the connection release work deteriorates, and the handling of the pigtail optical fiber extending from the optical connector plug ( Inconvenience that the bending process becomes difficult.

本発明は、上記した従来の問題が考慮されたものであり、光コネクタレセプタクルからのプラグ突出寸法を小さくすることができる光コネクタレセプタクル及び光コネクタを提供することを目的としている。   The present invention has been made in consideration of the above-described conventional problems, and an object of the present invention is to provide an optical connector receptacle and an optical connector that can reduce the size of a plug protrusion from the optical connector receptacle.

本発明は、前記課題を解決するため、以下の構成を採用した。
すなわち、請求項１記載の発明に係る光コネクタレセプタクルは、接続相手である光コネクタプラグが差し込まれる差込口が一端に形成されているとともに、軸線方向に延在して両端が開放された内孔が内部に形成されたハウジングと、前記内孔の中に挿装されたスリーブと、光ファイバの先端に装着され、前記スリーブ内に他端側から挿嵌されたフェルールと、該フェルールを一端側へ付勢する付勢部材と、前記スリーブに係合して該スリーブを前記ハウジングに固定するストッパと、が備えられていることを特徴としている。 The present invention employs the following configuration in order to solve the above problems.
That is, the optical connector receptacle according to the first aspect of the present invention has an insertion port into which an optical connector plug as a connection partner is inserted at one end, and extends in the axial direction so that both ends are opened. A housing having a hole formed therein, a sleeve inserted into the inner hole, a ferrule attached to the tip of an optical fiber and inserted from the other end into the sleeve, and the ferrule at one end An urging member that urges toward the side and a stopper that engages with the sleeve and fixes the sleeve to the housing are provided.

また、請求項２記載の発明は、前記ハウジングの側面に、前記内孔に連通される開口が形成され、前記ストッパは、前記開口に嵌め込まれて前記スリーブを直接係止することを特徴としている。   The invention according to claim 2 is characterized in that an opening communicating with the inner hole is formed on a side surface of the housing, and the stopper is fitted into the opening to directly lock the sleeve. .

また、請求項３記載の発明は、前記ストッパが、前記スリーブの他端側の端面に当接する部材であることを特徴としている。   According to a third aspect of the present invention, the stopper is a member that abuts against an end face on the other end side of the sleeve.

また、請求項４記載の発明は、前記ストッパが、前記フェルールが挿通される門形状の部材であることを特徴としている。   According to a fourth aspect of the present invention, the stopper is a gate-shaped member through which the ferrule is inserted.

また、請求項４記載の発明に係る光コネクタは、上記した構成からなる光コネクタレセプタクルと、該コネクタレセプタクルに接続される光コネクタプラグと、からなる光コネクタであって、前記光コネクタプラグには、前記光コネクタプラグのハウジング内に固定されて前記スリーブ内に一端側から挿入されるフェルールが備えられ、前記光コネクタレセプタクルのフェルールが前記付勢部材によって付勢されることで、両フェルール同士が前記スリーブ内で突き合わせ接続されることを特徴としている。   An optical connector according to a fourth aspect of the present invention is an optical connector comprising an optical connector receptacle having the above-described configuration and an optical connector plug connected to the connector receptacle, and the optical connector plug includes A ferrule fixed in the housing of the optical connector plug and inserted into the sleeve from one end side, and the ferrule of the optical connector receptacle is urged by the urging member, so that both ferrules are A butt connection is made in the sleeve.

本発明に係る光コネクタレセプタクル及び光コネクタによれば、光コネクタレセプタクル内に内蔵されたフェルールが付勢部材によって付勢されているため、光コネクタプラグのフェルールの後方にスプリング等の付勢部材を配設する必要がなく、光コネクタレセプタクルからのプラグ突出寸法を小さくすることができる。
また、ストッパによってスリーブがハウジングに固定されているため、光コネクタレセプタクルに光コネクタプラグを接続する際、光コネクタプラグのフェルールがスリーブに当るなどしても、スリーブが後方（光コネクタレセプタクルの基端側）に移動することがなく、また、固定されたスリーブ内で光コネクタレセプタクルのフェルールが軸線方向に移動可能であり、そのフェルールは付勢部材により光コネクタプラグ側に付勢される。これによって、フェルール同士の突き合わせ接続を確実に行うことができ、所望の光特性を確実に得ることができる。 According to the optical connector receptacle and the optical connector according to the present invention, since the ferrule built in the optical connector receptacle is urged by the urging member, the urging member such as a spring is provided behind the ferrule of the optical connector plug. There is no need to dispose the plug, and the protruding dimension of the plug from the optical connector receptacle can be reduced.
In addition, since the sleeve is fixed to the housing by the stopper, when the optical connector plug is connected to the optical connector receptacle, the sleeve is rearward (the base end of the optical connector receptacle) even if the ferrule of the optical connector plug hits the sleeve. The ferrule of the optical connector receptacle is movable in the axial direction within the fixed sleeve, and the ferrule is urged toward the optical connector plug by the urging member. Thereby, the butt connection between the ferrules can be reliably performed, and desired optical characteristics can be reliably obtained.

以下、本発明に係る光コネクタレセプタクル及び光コネクタの実施の形態について、図面に基いて説明する。
図１は光コネクタレセプタクル２と光コネクタプラグ３からなる光コネクタ１の斜視図であり、図２は光コネクタレセプタクル２の分解断面図である。図１，図２に示すように、光コネクタ１は、雌側である光コネクタレセプタクル２と雄側の光コネクタプラグ３とを接続した構成からなる。 Embodiments of an optical connector receptacle and an optical connector according to the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view of an optical connector 1 including an optical connector receptacle 2 and an optical connector plug 3, and FIG. 2 is an exploded sectional view of the optical connector receptacle 2. As shown in FIGS. 1 and 2, the optical connector 1 has a configuration in which an optical connector receptacle 2 on the female side and an optical connector plug 3 on the male side are connected.

まず、光コネクタレセプタクル２について説明する。
光コネクタレセプタクル２は、現場で引き回し用光ファイバ４の先端に取り付けられる所謂現場付けのレセプタクルであり、ハウジング２１と、割スリーブ（スリーブ）２２と、クランプ部付きフェルール（以下、単にフェルール２３と記す。）と、スプリング（付勢部材）２４と、ストップリング２５と、ストッパ２６とが備えられている。なお、上記した引き回し用光ファイバ４は、ドロップケーブルやインドアケーブルの光ファイバや、光ファイバコード等の光ファイバであってもよい。 First, the optical connector receptacle 2 will be described.
The optical connector receptacle 2 is a so-called on-site receptacle that is attached to the front end of the routing optical fiber 4 at the site, and includes a housing 21, a split sleeve (sleeve) 22, a ferrule with a clamp portion (hereinafter simply referred to as a ferrule 23). ), A spring (biasing member) 24, a stop ring 25, and a stopper 26. The routing optical fiber 4 may be an optical fiber such as a drop cable or an indoor cable, or an optical fiber such as an optical fiber cord.

ハウジング２１は、内部に割スリーブ２２とフェルール２３とがそれぞれ装着されるとともに基端（図２における右側）にストップリング２５が挿嵌される樹脂製の矩形部材である。ハウジング２１の先端面（図２における左側端面）には、光コネクタプラグ３の先端（図２における右側端部）が差し込まれる差込口２１ａが形成されており、また、ハウジング２１の先端部は、光コネクタプラグ３の先端部を外嵌するように筒状に形成されている。   The housing 21 is a resin rectangular member in which the split sleeve 22 and the ferrule 23 are mounted, and a stop ring 25 is inserted into the base end (right side in FIG. 2). The front end surface of the housing 21 (left end surface in FIG. 2) is formed with an insertion port 21a into which the front end (right end portion in FIG. 2) of the optical connector plug 3 is inserted. The tip of the optical connector plug 3 is formed in a cylindrical shape so as to be fitted.

また、ハウジング２１の内部には、軸線方向に延在する断面円形状の内孔２１ｂが形成されており、この内孔２１ｂは、一端（先端）が筒状のハウジング２１先端部の内部に開放されているとともに、他端（基端）がハウジング２１の後方（基端側）に開放されている。具体的には、筒状のハウジング２１先端部の内部には、基端側の端面から先端方向に突出する円筒部２１ｃが形成されており、この円筒部２１ｃの内孔２１ｂがハウジング２１の基端面まで達した状態になっている。内孔２１ｂの基端部分２１ｄには、ストップリング２５の先端（図２における左側端部）が挿嵌され、内孔２１ｂの先端部分２１ｆには、割スリーブ２２が挿装される。また、基端部分２１ｄと先端部分２１ｆとの間の部分２１ｅは、先端方向に向かって窄まるテーパー形状になっている。また、内孔２１ｂ（円筒部２１ｃ）の先端には、内側に突出した小突起２１ｊが周設されており、この小突起２１ｊが割スリーブ２２の先端側の端面に係止されて割スリーブ２２の先端側への移動が規制されている。   Further, an inner hole 21b having a circular cross section extending in the axial direction is formed inside the housing 21, and one end (tip) of the inner hole 21b is opened to the inside of the tip of the cylindrical housing 21. In addition, the other end (base end) is open to the rear (base end side) of the housing 21. Specifically, a cylindrical portion 21 c that protrudes in the distal direction from the end surface on the proximal end side is formed inside the distal end portion of the cylindrical housing 21, and the inner hole 21 b of the cylindrical portion 21 c is the base of the housing 21. It has reached the end face. The distal end (left end portion in FIG. 2) of the stop ring 25 is inserted into the proximal end portion 21d of the inner hole 21b, and the split sleeve 22 is inserted into the distal end portion 21f of the inner hole 21b. Further, a portion 21e between the base end portion 21d and the tip end portion 21f has a tapered shape that is narrowed toward the tip end direction. Further, a small protrusion 21j protruding inward is provided at the tip of the inner hole 21b (cylindrical portion 21c), and the small protrusion 21j is engaged with the end surface of the front end side of the split sleeve 22 to be split. The movement to the tip side is restricted.

図３は図２に示すＡ−Ａ間の拡大断面図である。図３に示すように、ハウジング２１の中央側面には、ストッパ２６を嵌め込むための開口２１ｇが形成されている。この開口２１ｇは、内孔２１ｂの先端部分２１ｆの基端側の端部に直交して形成されており、その内孔２１ｂの先端部分２１ｆに連通された貫通孔状の開口である。また、開口２１ｇは、一端側（図４における左側）が２つに分かれており、また、中間部分の幅（図４における縦寸法）が内孔２１ｂの径よりも大きく、両端部が階段状に拡幅された形状になっている。   FIG. 3 is an enlarged cross-sectional view taken along the line A-A shown in FIG. As shown in FIG. 3, an opening 21 g for fitting the stopper 26 is formed on the central side surface of the housing 21. This opening 21g is a through-hole-shaped opening that is formed orthogonal to the proximal end of the distal end portion 21f of the inner hole 21b and communicates with the distal end portion 21f of the inner hole 21b. Further, the opening 21g is divided into two at one end side (left side in FIG. 4), the width of the intermediate portion (vertical dimension in FIG. 4) is larger than the diameter of the inner hole 21b, and both end portions are stepped. The shape is widened.

また、図１，図２に示すように、ハウジング２１の基端側面には、ストップリング２５の先端部を両側から挟み込んでストップリング２５を保持する挟持部２１ｈが形成されている。また、ハウジング２１の先端側面には、後述する光コネクタプラグ３のツメ部３１ａ，３１ａを掛止して光コネクタプラグ３を保持する被掛止孔２１ｉ，２１ｉが形成されている。   As shown in FIGS. 1 and 2, a clamping portion 21 h that holds the stop ring 25 by sandwiching the distal end portion of the stop ring 25 from both sides is formed on the proximal side surface of the housing 21. In addition, hooked holes 21 i and 21 i for holding the optical connector plug 3 by hooking claws 31 a and 31 a of the optical connector plug 3 to be described later are formed on the front end side surface of the housing 21.

図２，図３に示すように、内孔２１ｂ内に挿装された割スリーブ２２は、軸線方向に延在するスリット２２ａが入った断面Ｃ形状のスリーブであり、円筒バネ状の部材である。また、図４は図２に示すＢ部分の拡大断面図である。図４に示すように、割スリーブ２２は、その先端側の端面が内孔２１ｂの先端に形成された小突起２１ｊに当接するとともに、その基端側の端面がストッパ２６の先端側の面に当接されている。   As shown in FIGS. 2 and 3, the split sleeve 22 inserted in the inner hole 21b is a C-shaped sleeve having a slit 22a extending in the axial direction, and is a cylindrical spring-like member. . 4 is an enlarged cross-sectional view of a portion B shown in FIG. As shown in FIG. 4, the split sleeve 22 has an end surface on the distal end abutting against a small protrusion 21 j formed at the distal end of the inner hole 21 b, and an end surface on the proximal end side on the distal end surface of the stopper 26. It is in contact.

図５はフェルール２３を表す断面図である。図２，図５に示すように、フェルール２３は、引き回し用光ファイバ４の先端に装着される部材であり、図示せぬ接続用光ファイバ５（裸線）を内装固定するフェルール本体２３２と、このフェルール本体２３２の接合端面（先端面）２３２ａに対向する後端側に配置され、裸線からなる接続用光ファイバ５の後端（基端側の端部）と引き回し用光ファイバ４の先端（裸線）とを突き合わせ接続する接続機構（クランプ部）２３３とから構成されている。   FIG. 5 is a cross-sectional view showing the ferrule 23. As shown in FIGS. 2 and 5, the ferrule 23 is a member attached to the distal end of the routing optical fiber 4, and a ferrule body 232 for fixing the connection optical fiber 5 (bare wire) (not shown) internally, The ferrule body 232 is disposed on the rear end side facing the joining end surface (tip surface) 232a, and the rear end (base end side) of the connecting optical fiber 5 made of bare wire and the front end of the routing optical fiber 4 And a connection mechanism (clamp portion) 233 that butt-connects (bare wire).

フェルール本体２３２は、例えば、ジルコニア等のセラミック、或いはガラス等で形成されたキャピラリタイプ（単心用）のフェルールであり、その中心には、非常に細かい微細孔である光ファイバ孔２３２ｂが形成されている。このフェルール本体２３２は、割スリーブ２２内に基端側から緩挿されている。フェルール本体２３２の後端には、内孔２１ｂの中央部分２１ｅ内に嵌合されるとともに割スリーブ２２の基端側の端面に当接するフランジ部２３１が形成されている。   The ferrule body 232 is, for example, a capillary type (single core) ferrule formed of ceramic such as zirconia or glass, and an optical fiber hole 232b, which is a very fine micro hole, is formed at the center thereof. ing. The ferrule body 232 is loosely inserted into the split sleeve 22 from the proximal end side. At the rear end of the ferrule main body 232, a flange portion 231 is formed which is fitted in the central portion 21e of the inner hole 21b and abuts against the end surface on the proximal end side of the split sleeve 22.

接続機構２３３は、例えば、円柱形状の素子を半割りしたものであり、一対の半割り素子２３４，２３５，２３６の間で、接続用光ファイバ５の後端部５ａをクランプするとともに、引き回し用光ファイバ４の先端の素線或いは心線からなる部分４ａ及び引き回し用光ファイバ４の先端の裸線からなる部分４ｂをそれぞれクランプする構成からなっている。また、一対の半割り素子２３４，２３５，２３６は、Ｃ形バネ２３７の中に収容されており、このＣ形バネ２３７によって組み合せ状態が維持され、接続用光ファイバ５と引き回し用光ファイバ４との突き合わせ接続状態が維持されている。   The connection mechanism 233 is, for example, a half of a cylindrical element. The connection mechanism 233 clamps the rear end portion 5a of the connection optical fiber 5 between the pair of half-split elements 234, 235, and 236, and is used for routing. The optical fiber 4 has a configuration in which a portion 4a made of a strand or a core wire at the tip of the optical fiber 4 and a portion 4b made of a bare wire at the tip of the routing optical fiber 4 are clamped. The pair of halves 234, 235, and 236 are housed in a C-shaped spring 237, and the combined state is maintained by the C-shaped spring 237. The connecting optical fiber 5 and the routing optical fiber 4 The butt connection state is maintained.

上記したフェルール２３に引き回し用光ファイバ４の先端を挿入するときには、一対の半割り素子２３４，２３５，２３６の間に図示せぬ介挿部材が入れられ、一対の半割り素子２３４，２３５，２３６の間が僅かに開けられた状態になる。そして、接続用光ファイバ５の後端と引き回し用光ファイバ４の先端を突き合わせ接続した後、図示せぬ介挿部材を抜いて一対の半割り素子２３４，２３５，２３６の間で挟持する。   When the leading end of the routing optical fiber 4 is inserted into the ferrule 23 described above, an insertion member (not shown) is inserted between the pair of halves 234, 235, 236, and the pair of halves 234, 235, 236 is inserted. The space between is slightly opened. Then, after the rear end of the connection optical fiber 5 and the front end of the routing optical fiber 4 are butted and connected, an insertion member (not shown) is removed and sandwiched between the pair of halves 234, 235, and 236.

図１，図２に示すように、ストップリング２５は、ハウジング２１の基端からその中に嵌入され、その中に接続機構２３３を収容した状態でハウジング２１内に装着される筒状の部材である。
図２に示すように、スプリング２４は、ストップリング２５の中に収納されて、フェルール２３の接続機構２３３の後方（基端側）に配設されており、ストップリング２５の内壁で反力をとってフェルール２３を先端方向に付勢するものである。 As shown in FIGS. 1 and 2, the stop ring 25 is a cylindrical member that is fitted into the housing 21 from the proximal end and is mounted in the housing 21 with the connection mechanism 233 accommodated therein. is there.
As shown in FIG. 2, the spring 24 is housed in the stop ring 25, and is disposed on the rear side (base end side) of the connection mechanism 233 of the ferrule 23, and the reaction force is applied to the inner wall of the stop ring 25. Thus, the ferrule 23 is urged in the distal direction.

図１，図３，図４に示すように、ストッパ２６は、割スリーブ２２に係合してその割スリーブ２２をハウジング２１に固定するものである。このストッパ２６によってハウジング２１に固定された割スリーブ２２は、フェルール２３に追従移動せず、光コネクタレセプタクル２と光コネクタプラグ３とを接続した時に、フェルール２３がスプリング２４の弾性によって後退するのに対し、割スリーブ２２の後方への移動が規制されている。   As shown in FIGS. 1, 3, and 4, the stopper 26 engages with the split sleeve 22 and fixes the split sleeve 22 to the housing 21. The split sleeve 22 fixed to the housing 21 by the stopper 26 does not move following the ferrule 23. When the optical connector receptacle 2 and the optical connector plug 3 are connected, the ferrule 23 is retracted by the elasticity of the spring 24. On the other hand, the backward movement of the split sleeve 22 is restricted.

本実施の形態では、ハウジング２１の開口２１ｇに嵌め込まれて割スリーブ２２を直接係止するものであり、内孔２１ｂ内の割スリーブ２２の後端面に当接して割スリーブ２２の後方への移動を直接規制する門形形状の部材である。ストッパ２６の概略構成は、階段状に拡幅された開口２１ｇの一端部（図４における右側端部）に嵌め込まれる頭部２６ａと、開口２１ｇの中間部および他端部に嵌め込まれる二又部２６ｂとから構成されている。二又部２６ｂは、フェエルール本体２３２を両側から挟むように設置されており、二又部２６ｂの二又の間には、フェエルール本体２３２が挿通されている。また、二又部２６ｂの先端には、外側に突出したツメ２６ｃ，２６ｃがそれぞれ形成されており、このツメ２６ｃ，２６ｃは、段差形状の開口２１ｇ他端部（図４における左側端部）に掛止されている。また、二又部２６ｂは、その両側面には欠き込み（Ｕ溝）２６ｄ，２６ｄが形成されており、閉じ開きされ易い形状になっている。   In this embodiment, the split sleeve 22 is directly locked by being fitted into the opening 21g of the housing 21, and the split sleeve 22 is moved backward by contacting the rear end surface of the split sleeve 22 in the inner hole 21b. It is a gate-shaped member that directly regulates The schematic configuration of the stopper 26 includes a head portion 26a fitted into one end portion (right end portion in FIG. 4) of the opening 21g widened in a stepped manner, and a forked portion 26b fitted into the intermediate portion and the other end portion of the opening 21g. It consists of and. The forked portion 26b is installed so as to sandwich the ferrule body 232 from both sides, and the ferrule body 232 is inserted between the forked portions of the forked portion 26b. Further, claws 26c and 26c projecting outward are formed at the tip of the bifurcated portion 26b. The claws 26c and 26c are formed at the other end of the stepped opening 21g (the left end in FIG. 4). It is hanging. Further, the bifurcated portion 26b has notches (U-grooves) 26d and 26d formed on both side surfaces thereof, and has a shape that is easy to close and open.

上記した構成からなる光コネクタレセプタクル２の組み立て手順としては、まず、ハウジング２１、割スリーブ２２、フェルール２３、スプリング２４及びストップリング２５を組み立てる。具体的には、ハウジング２１の内孔２１ｂ内に基端側から割スリーブ２２を挿装させた後、ハウジング２１の開口２１ｇにストッパ２６を嵌め込み、割スリーブ２２をハウジング２１に固定する。次いで、ハウジング２１の内孔２１ｂ内に基端側からフェルール２３を挿入し、その後、スプリング２４を収納したストップリング２５をハウジング２１の内孔２１ｂ内に基端側から挿嵌させる。次いで、ハウジング２１やストップリング２５に形成された図示せぬ開口から、フェルール２３に備えられた接続機構２３３の一対の半割り素子２３４，２３５，２３６の間に図示せぬ介挿部材を差し込む。その後、引き回し用光ファイバ４の先端をストップリング２５の後端から挿入して接続用光ファイバ５に接続させる。次いで、上記した図示せぬ介挿部材をハウジング２１やストップリング２５に形成された図示せぬ開口から引き抜き、引き回し用光ファイバ４をフェルール２３の接続機構２３３にクランプさせる。   As a procedure for assembling the optical connector receptacle 2 having the above-described configuration, first, the housing 21, the split sleeve 22, the ferrule 23, the spring 24, and the stop ring 25 are assembled. Specifically, after the split sleeve 22 is inserted into the inner hole 21 b of the housing 21 from the proximal end side, a stopper 26 is fitted into the opening 21 g of the housing 21 to fix the split sleeve 22 to the housing 21. Next, the ferrule 23 is inserted into the inner hole 21 b of the housing 21 from the proximal end side, and then the stop ring 25 that houses the spring 24 is inserted into the inner hole 21 b of the housing 21 from the proximal end side. Next, an insertion member (not shown) is inserted between the pair of halves 234, 235, 236 of the connection mechanism 233 provided in the ferrule 23 from an opening (not shown) formed in the housing 21 and the stop ring 25. Thereafter, the leading end of the routing optical fiber 4 is inserted from the rear end of the stop ring 25 and connected to the connecting optical fiber 5. Next, the above-described insertion member (not shown) is pulled out from an opening (not shown) formed in the housing 21 and the stop ring 25, and the drawing optical fiber 4 is clamped to the connection mechanism 233 of the ferrule 23.

次に、光コネクタプラグ３について説明する。
図１，図２に示すように、光コネクタプラグ３は、ハウジング３１内にフェルール３２が装着・固定された構成からなる光コネクタプラグであり、フェルール３２をストップリング３３によって固定した構成からなる。なお、フェルール３２がハウジング３１に固定されている点以外は、公知の光コネクタプラグと同様であり、その他の部位の構成については、適宜変更可能である。 Next, the optical connector plug 3 will be described.
As shown in FIGS. 1 and 2, the optical connector plug 3 is an optical connector plug having a configuration in which a ferrule 32 is mounted and fixed in a housing 31, and has a configuration in which the ferrule 32 is fixed by a stop ring 33. Note that, except that the ferrule 32 is fixed to the housing 31, it is the same as a known optical connector plug, and the configuration of other parts can be appropriately changed.

上記した構成からなる光コネクタレセプタクル２及び光コネクタ１によれば、光コネクタレセプタクル２内に内蔵されたフェルール２３がスプリング２４によって付勢されているため、光コネクタプラグ３のフェルール３２の後方にスプリング等の付勢部材を配設する必要がなく、光コネクタレセプタクル２からのプラグ突出寸法を小さくすることができる。   According to the optical connector receptacle 2 and the optical connector 1 having the above-described configuration, the ferrule 23 built in the optical connector receptacle 2 is urged by the spring 24, so that the spring is located behind the ferrule 32 of the optical connector plug 3. It is not necessary to dispose a biasing member such as a plug, and the size of the plug protrusion from the optical connector receptacle 2 can be reduced.

また、ストッパ２６によって割スリーブ２２がハウジング２１に固定されているため、光コネクタレセプタクル２に光コネクタプラグ３を接続する際、光コネクタプラグ３のフェルール３２が割スリーブ２２に当るなどしても、割スリーブ２２が後方（光コネクタレセプタクル２の基端側）に移動することがなく、また、固定された割スリーブ２２内で光コネクタレセプタクル２のフェルール２３が軸線方向に移動可能であり、そのフェルール２３はスプリング２４により光コネクタプラグ３側に付勢される。これによって、フェルール２３，３２同士の突き合わせ接続を確実に行うことができ、所望の光特性を確実に得ることができる。   Further, since the split sleeve 22 is fixed to the housing 21 by the stopper 26, when the optical connector plug 3 is connected to the optical connector receptacle 2, even if the ferrule 32 of the optical connector plug 3 hits the split sleeve 22, The split sleeve 22 does not move rearward (base end side of the optical connector receptacle 2), and the ferrule 23 of the optical connector receptacle 2 can move in the axial direction within the fixed split sleeve 22, and the ferrule 23 is urged toward the optical connector plug 3 by a spring 24. Thereby, the butt connection between the ferrules 23 and 32 can be reliably performed, and desired optical characteristics can be reliably obtained.

また、ハウジング２１の側面には、内孔２１ｂに連通される開口２１ｇが形成され、ストッパ２６は、開口２１ｇに嵌め込まれて割スリーブ２２を直接係止するため、部材の寸法精度などに影響されることなく、割スリーブ２２を確実に固定することができる。   Further, an opening 21g communicating with the inner hole 21b is formed on the side surface of the housing 21, and the stopper 26 is fitted into the opening 21g and directly locks the split sleeve 22, so that it is affected by the dimensional accuracy of the member. Therefore, the split sleeve 22 can be securely fixed.

また、ストッパ２６が、スリーブ２６の後方端面に当接する部材であるため、割スリーブ２２の後方への移動を確実に防止することができる。また、ストッパ２６が、フェルール２３のフェルール本体２３２が挿通される門形状の部材であるため、ストッパ２６は簡単に取り付けられ、光コネクタレセプタクル２の組立作業を簡易にすることができる。   Further, since the stopper 26 is a member that contacts the rear end surface of the sleeve 26, the rearward movement of the split sleeve 22 can be reliably prevented. Further, since the stopper 26 is a gate-shaped member through which the ferrule body 232 of the ferrule 23 is inserted, the stopper 26 can be easily attached and the assembly work of the optical connector receptacle 2 can be simplified.

以上、本発明に係る光コネクタレセプタクル及び光コネクタの実施の形態について説明したが、本発明は上記した実施の形態に限定されるものではなく、その趣旨を逸脱しない範囲で適宜変更可能である。例えば、上記した実施の形態では、一対の半割り素子２３４，２３５，２３６の間で、接続用光ファイバ５の後端部分をクランプするとともに、引き回し用光ファイバ４の先端部分をクランプする所謂メカニカルスプライスの構成からなる接続機構２３３が備えられている現場付けの光コネクタレセプタクルについて説明しているが、本発明は、例えば、フェルールの微細孔内で接続用光ファイバの後端と引き回し用光ファイバの先端を突き合わせ接続してＵＶ接着剤で固定する接続機構が備えられている光コネクタレセプタクルであってもよく、或いは、工場等で予め引き回し用光ファイバが内挿固定されたフェルールが組み込まれた光コネクタレセプタクルであってもよい。   The embodiments of the optical connector receptacle and the optical connector according to the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and can be appropriately changed without departing from the scope of the present invention. For example, in the above-described embodiment, the rear end portion of the connection optical fiber 5 is clamped between the pair of halves 234, 235, and 236, and the front end portion of the routing optical fiber 4 is clamped. The field-attached optical connector receptacle provided with the connection mechanism 233 having the splice structure is described. The present invention is, for example, the rear end of the connection optical fiber and the optical fiber for routing in the microhole of the ferrule. It may be an optical connector receptacle provided with a connection mechanism that abuts and connects with the tip of the fiber and is fixed with UV adhesive, or a ferrule in which an optical fiber for routing is inserted and fixed in advance at a factory or the like is incorporated. An optical connector receptacle may be used.

本発明に係る光コネクタレセプタクル及び光コネクタの実施の形態を説明するための斜視図である。It is a perspective view for demonstrating embodiment of the optical connector receptacle and optical connector which concern on this invention. 本発明に係る光コネクタレセプタクル及び光コネクタの実施の形態を説明するための分解断面図である。It is an exploded sectional view for explaining an embodiment of an optical connector receptacle and an optical connector concerning the present invention. 図２に示すＡ−Ａ間の拡大断面図である。It is an expanded sectional view between AA shown in FIG. 図２に示すＢ部分の拡大断面図である。It is an expanded sectional view of B section shown in FIG. 本発明に係る光コネクタレセプタクル及び光コネクタの実施の形態を説明するための本発明に係る光コネクタレセプタクルを説明するための光コネクタレセプタクル側のフェルールの断面図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of an optical connector receptacle-side ferrule for explaining an optical connector receptacle according to the present invention for explaining an embodiment of the optical connector receptacle and the optical connector according to the present invention.

符号の説明Explanation of symbols

１…光コネクタ、２…光コネクタレセプタクル、３…光コネクタプラグ、４…引き回し用光ファイバ（光ファイバ）、２１…ハウジング、２１ａ…差込口、２１ｂ…内孔、２１ｇ…開口２２…割スリーブ（スリーブ）、２３…フェルール、２４…スプリング（付勢部材）、２６…ストッパ、３１…ハウジング、３２…フェルール DESCRIPTION OF SYMBOLS 1 ... Optical connector, 2 ... Optical connector receptacle, 3 ... Optical connector plug, 4 ... Optical fiber for drawing (optical fiber), 21 ... Housing, 21a ... Insert, 21b ... Inner hole, 21g ... Opening 22 ... Split sleeve (Sleeve), 23 ... ferrule, 24 ... spring (biasing member), 26 ... stopper, 31 ... housing, 32 ... ferrule

Claims (5)

接続相手である光コネクタプラグ（３）が差し込まれる差込口（２１ａ）が一端に形成されているとともに、軸線方向に延在して両端が開放された内孔（２１ｂ）が内部に形成されたハウジング（２１）と、
前記内孔の中に挿装されたスリーブ（２２）と、
光ファイバ（４）の先端に装着され、前記スリーブ内に他端側から挿嵌されたフェルール（２３）と、
該フェルールを一端側へ付勢する付勢部材（２４）と、
前記スリーブに係合して該スリーブを前記ハウジングに固定するストッパ（２６）と、
が備えられていることを特徴とする光コネクタレセプタクル。 An insertion port (21a) into which an optical connector plug (3) as a connection partner is inserted is formed at one end, and an inner hole (21b) that extends in the axial direction and is open at both ends is formed inside. A housing (21);
A sleeve (22) inserted into the inner hole;
A ferrule (23) attached to the tip of the optical fiber (4) and inserted into the sleeve from the other end;
A biasing member (24) for biasing the ferrule toward one end;
A stopper (26) that engages the sleeve and secures the sleeve to the housing;
An optical connector receptacle, comprising: 前記ハウジングの側面には、前記内孔に連通される開口（２１ｇ）が形成され、
前記ストッパは、前記開口に嵌め込まれて前記スリーブを直接係止することを特徴とする請求項１記載の光コネクタレセプタクル。 An opening (21g) communicating with the inner hole is formed on a side surface of the housing,
The optical connector receptacle according to claim 1, wherein the stopper is fitted into the opening to directly lock the sleeve. 前記ストッパは、前記スリーブの他端側の端面に当接する部材であることを特徴とする請求項１又は２記載の光コネクタレセプタクル。   The optical connector receptacle according to claim 1, wherein the stopper is a member that comes into contact with an end face on the other end side of the sleeve. 前記ストッパは、前記フェルールが挿通される門形状の部材であることを特徴とする請求項１から３の何れかに記載の光コネクタレセプタクル。   4. The optical connector receptacle according to claim 1, wherein the stopper is a gate-shaped member through which the ferrule is inserted. 請求項１から４の何れかに記載された光コネクタレセプタクル（２）と、該コネクタレセプタクルに接続される光コネクタプラグと、からなる光コネクタ（１）であって、
前記光コネクタプラグには、前記光コネクタプラグのハウジング（３１）内に固定されて前記スリーブ内に一端側から挿入されるフェルール（３２）が備えられ、
前記光コネクタレセプタクルのフェルールが前記付勢部材によって付勢されることで、両フェルール同士が前記スリーブ内で突き合わせ接続されることを特徴とする光コネクタ。 An optical connector (1) comprising the optical connector receptacle (2) according to any one of claims 1 to 4 and an optical connector plug connected to the connector receptacle,
The optical connector plug includes a ferrule (32) that is fixed in the housing (31) of the optical connector plug and is inserted into the sleeve from one end side,
An optical connector, wherein a ferrule of the optical connector receptacle is urged by the urging member so that both ferrules are butt-connected in the sleeve.
JP2005316369A 2005-10-31 2005-10-31 Optical connector receptacle and optical connector Active JP4205093B2 (en)

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