JP2006337637A - Optical element coupling lock key and optical transmitter-receiver - Google Patents

Optical element coupling lock key and optical transmitter-receiver Download PDF

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JP2006337637A
JP2006337637A JP2005161138A JP2005161138A JP2006337637A JP 2006337637 A JP2006337637 A JP 2006337637A JP 2005161138 A JP2005161138 A JP 2005161138A JP 2005161138 A JP2005161138 A JP 2005161138A JP 2006337637 A JP2006337637 A JP 2006337637A
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optical
lock key
plug
receptacle
optical transceiver
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Takuya Komatsu
拓也 小松
Masayuki Iwase
正幸 岩瀬
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Furukawa Electric Co Ltd
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Furukawa Electric Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To prevent disconnection between an optical fiber plug and an optical transmitter-receiver with respect to a lock key that maintains coupling of the optical fiber plug with an optical element connector used for transmission of a digital video signal for example. <P>SOLUTION: The lock key is equipped with: an inserting part 22 that regulates, in the optical transmitter-receiver 1, the displacement of an elastic piece 31 engaging with a projection 48 on the surface of an optical waveguide plug 40 which is inserted into the optical transmitter-receiver; a locking part 26 that is installed in the tip end of the inserting part 22 and engaged with the wall of the optical transmitter-receiver 1; and a clamping part 21 that is connected with the inserting part 22. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、光素子結合ロックキー及び光送受信機に関し、より詳しくは、デジタルビデオ信号の伝送などに使用される光ファイバプラグと光素子コネクタとの結合を保持するロックキーと、そのロックキーが取り付けられる光送受信機に関する。   The present invention relates to an optical element coupling lock key and an optical transceiver, and more specifically, a lock key for holding a coupling between an optical fiber plug used for transmission of a digital video signal and an optical element connector, and the lock key. The present invention relates to an optical transceiver to be attached.

プラズマテレビ、液晶表示パネル等の平面型表示装置或いはリアプロジェクタなどの画像表示装置の薄型化や大画面化にともなって、これらの画像表示装置も単なるテレビ受像器として用いられるだけでなく、コンピュータを介したゲーム、広告、医療分野、交通機関、工場、銀行など様々な場所、用途で使用されるようになってきている。   As flat display devices such as plasma televisions and liquid crystal display panels or image display devices such as rear projectors become thinner and have larger screens, these image display devices are not only used as television receivers, but also used as computers. It has been used in various places and applications such as games, advertisements, medical fields, transportation, factories, and banks.

それらの画像表示に使用されるデジタル映像表示信号は、例えばコンピューターのグラフィックカードなどの信号源から画像表示装置に出力される。そして、デジタル映像表示信号をデバイス間で送受信するためのインターフェースの標準規格として米国のＶＥＳＡ（Video Electronic Standards Association) が提唱しているＤＶＩ（Digital Visual Interface）がある。   Digital video display signals used for displaying these images are output from a signal source such as a graphic card of a computer to the image display device. As an interface standard for transmitting and receiving digital video display signals between devices, there is DVI (Digital Visual Interface) proposed by VESA (Video Electronic Standards Association) in the United States.

ＤＶＩの規格の下で信号源と画像表示装置の間を結ぶ伝送路には光ファイバを用いる光方式があり、その伝送方式においては光信号と電気信号を相互に変換するための光送受信機（トランシーバ）が用いられる。光送受信機は光送信素子と光受信素子を内蔵しており、光送信素子として半導体レーザが、光受信素子としてフォトダイオードが用いられる。これにより、光ファイバから入力する光信号をフォトダイオードで受光して電気信号へ変換する一方、発光素子により電気信号を光信号に変換して他の光ファイバに伝搬させる。   There is an optical system using an optical fiber in a transmission path connecting a signal source and an image display device under the DVI standard. In the transmission system, an optical transceiver for converting an optical signal and an electrical signal to each other ( Transceiver) is used. The optical transceiver includes a light transmitting element and a light receiving element. A semiconductor laser is used as the light transmitting element, and a photodiode is used as the light receiving element. Thus, an optical signal input from the optical fiber is received by the photodiode and converted into an electric signal, while the electric signal is converted into an optical signal by the light emitting element and propagated to another optical fiber.

それらの光ファイバと光送受信機を接続するための構造として例えばＳＭＩ(Small Multimedia Interface)規格を採用したものがある。ＳＭＩ規格のプラグは例えば下記の非特許文献１に掲載されているＳＭＩプラグがある。また、ＳＭＩ規格のコネクタを備えた光送受信機として、下記の非特許文献２に掲載されているような光送受信モジュールがある。   As a structure for connecting these optical fibers and optical transceivers, there is one adopting, for example, the SMI (Small Multimedia Interface) standard. Examples of SMI standard plugs include SMI plugs described in Non-Patent Document 1 below. Further, as an optical transceiver having an SMI standard connector, there is an optical transceiver module described in Non-Patent Document 2 below.

光送受信機とＳＭＩプラグは、例えば図９に示すように接続される。図９において、光送受信機のケース本体１０１の開口端部には略筒状のレセプタクル１０２の一端が接続されている。また、レセプタクル１０２とケース本体１０１の接続領域には、ケース本体１０１内に配置される受光素子１３１に光ファイバ１２３を接続するための光結合素子１１０が取り付けられている。その光結合素子１１０の一面側には受光素子１３１が嵌め込まれる光素子嵌入筒１１１が形成され、その反対面側には光ファイバ１２３が挿入されるＳＭＩプラグ１２１のフェルール１２２が嵌め込まれるファイバ嵌入筒１１３が設けられている。なお、図９において受光素子１３１により隠れている発光素子は光結合素子１１０に取り付けられ、その発光素子もフェルール内の光ファイバに接続される。   The optical transceiver and the SMI plug are connected, for example, as shown in FIG. In FIG. 9, one end of a substantially cylindrical receptacle 102 is connected to the open end of the case body 101 of the optical transceiver. An optical coupling element 110 for connecting the optical fiber 123 to the light receiving element 131 disposed in the case main body 101 is attached to a connection region between the receptacle 102 and the case main body 101. An optical element insertion cylinder 111 into which the light receiving element 131 is fitted is formed on one side of the optical coupling element 110, and a fiber insertion cylinder into which the ferrule 122 of the SMI plug 121 into which the optical fiber 123 is inserted is fitted on the opposite side. 113 is provided. In FIG. 9, the light emitting element hidden by the light receiving element 131 is attached to the optical coupling element 110, and the light emitting element is also connected to the optical fiber in the ferrule.

そして、ＳＭＩプラグ１２１をレセプタクル１０２内に差し込むことによりＳＭＩプラグ１２１のフェルール１２２が光結合素子１１０のファイバ嵌入筒１１３に嵌入される。   Then, the ferrule 122 of the SMI plug 121 is inserted into the fiber insertion tube 113 of the optical coupling element 110 by inserting the SMI plug 121 into the receptacle 102.

また、ＳＭＩプラグ１２１の上面に形成された凹部１２４には、レセプタクル１０２の内側上部の係止爪１０３と係止可能な凸部１２５が形成され、これにより光結合素子１１０に接続されたＳＭＩプラグ１２１の抜けを抑制している。   Further, a concave portion 124 formed on the upper surface of the SMI plug 121 is formed with a convex portion 125 that can be engaged with the engaging claw 103 on the inner upper side of the receptacle 102, thereby connecting the optical coupling element 110 to the SMI plug. The omission of 121 is suppressed.

係止爪１０３は、レセプタクル１０２の内方への付勢力を持ち、ＳＭＩプラグ１２１をレセプタクル１０２に差し込む過程においてＳＭＩプラグ１２１の凸部１２５に乗り上げた後にその奥の凹部１２４に入り込んで凸部１２５と係止することになる。
pofeska.com ＳＭＩプラグ、［平成１７年５月３１日検索］、インターネット ＜http://www.pofeska.com/pofdev/plug/smi/smi.htm ＞ TOSHIBA Semiconductor 光半導体トピックス ＳＭＩ光コネクタ対応光送受信モジュール：TODX2404(F)、［平成１７年５月３１日検索］、インターネット ＜URL:http://www.semicon.toshiba.co.jp/prd/opto/topics_todx2404_200412.html＞ The locking claw 103 has an inward biasing force of the receptacle 102, and enters the concave portion 124 at the back of the SMI plug 121 after it rides on the convex portion 125 of the SMI plug 121 in the process of inserting the SMI plug 121 into the receptacle 102. Will be locked.
pofeska.com SMI Plug, [Search May 31, 2005], Internet <http://www.pofeska.com/pofdev/plug/smi/smi.htm> TOSHIBA Semiconductor Optical Semiconductor Topics Optical transceiver module for SMI optical connectors: TODX2404 (F), [Search May 31, 2005], Internet <URL: http://www.semicon.toshiba.co.jp/prd/opto /topics_todx2404_200412.html>

しかし、ＳＭＩプラグ１２１の凸部１２３は、係止爪１０３の乗り上げを可能にする傾斜面をその前後に有しているので、レセプタクル１０２から遠ざかる方向への力をＳＭＩプラグ１２１に少し加えるだけでＳＭＩプラグ１２３がレセプタクル１０２から簡単に外れてしまうので、光送受信機を作動させながら光ファイバを移動することは好ましくない。   However, since the convex portion 123 of the SMI plug 121 has inclined surfaces that allow the locking claw 103 to ride on the front and rear thereof, only a little force in the direction away from the receptacle 102 is applied to the SMI plug 121. Since the SMI plug 123 is easily detached from the receptacle 102, it is not preferable to move the optical fiber while operating the optical transceiver.

これに対して、凸部１２３のうち係止爪１０３との係止部分の傾斜面を無くして垂直面にする構造を採用することも考えられるが、ＳＭＩ規格によれば係止爪１０３を外部から持ち上げる構造が存在しないので、係止プラグ１２１が全く抜けなくなってしまうという新たな問題が生じてしまう。   On the other hand, it is conceivable to adopt a structure in which the inclined surface of the protruding portion 123 with the locking claw 103 is eliminated to make it a vertical surface, but according to the SMI standard, the locking claw 103 is externally provided. Since there is no structure that lifts up, the new problem arises that the locking plug 121 cannot be removed at all.

本発明の目的は、ＳＭＩプラグと光送受信機の接続解除の防止が可能な光素子結合ロックキーと及び光送受信機を提供することにある。   An object of the present invention is to provide an optical element coupling lock key and an optical transceiver that can prevent the SMI plug from being disconnected from the optical transceiver.

上記の課題を解決するための本発明の第１の態様に係る光素子結合ロックキーは、光送受信機内に嵌入される光導波路プラグ表面の凸部と係止する弾性片の変位を該光送受信機内で規制する差し込み部と、前記差し込み部の先端部分に設けられて前記光送受信機の壁に係止する係止部と、前記差し込み部に繋がる把持部とを有することを特徴とする。   An optical element coupling lock key according to a first aspect of the present invention for solving the above-described problems is obtained by detecting the displacement of an elastic piece that engages with a convex portion on the surface of an optical waveguide plug inserted into an optical transceiver. It has an insertion part to be regulated in the machine, a locking part provided at the tip of the insertion part and locked to the wall of the optical transceiver, and a gripping part connected to the insertion part.

本発明の第２の態様に係る光素子結合ロックキーは、第１の態様において、前記係止部は、前記差し込み部の途中から先端にかけて分岐された分岐部の先端で側方に突出して形成されていることを特徴とする。   An optical element coupling lock key according to a second aspect of the present invention is the optical element coupling lock key according to the first aspect, wherein the locking portion protrudes laterally at the distal end of the branch portion branched from the middle of the insertion portion to the distal end. It is characterized by being.

本発明の第３の態様に係る光素子結合ロックキーは、第２の態様において、少なくとも前記差し込み部と前記分岐部は弾性材より形成されていることを特徴とする。   The optical element coupling lock key according to a third aspect of the present invention is characterized in that, in the second aspect, at least the insertion part and the branch part are formed of an elastic material.

本発明の第４の態様に係る光素子結合ロックキーは、第１乃至第３の態様のいずれかにおいて、前記把持部は、前記差し込み部よりも幅が広くて前記光送受信機から露出する形状を有していることを特徴とする。   The optical element coupling lock key according to a fourth aspect of the present invention is the optical element coupling lock key according to any one of the first to third aspects, wherein the grip portion is wider than the insertion portion and exposed from the optical transceiver. It is characterized by having.

上記の課題を解決するための本発明の第５の態様に係る光送受信機は、光導波路プラグのフェルールを嵌入する光導波路嵌入筒と光素子を嵌入する光素子嵌入筒とが形成された光結合部と、前記光導波路プラグが差し込まれる挿入口を有するとともに前記光結合部が内部に装着される筒状部と、前記筒状部の内部に形成され且つ前記光導波路プラグの表面に現れる凸部に係止可能な弾性部と、前記光導波路プラグの前記凸部と係止を解く方向への前記弾性部の移動を規制するロックキーを挿入するロックキー挿入スペースとを有することを特徴とする。   An optical transceiver according to a fifth aspect of the present invention for solving the above-described problem is an optical device in which an optical waveguide insertion cylinder into which a ferrule of an optical waveguide plug is inserted and an optical element insertion cylinder into which an optical element is inserted are formed. A coupling portion; a cylindrical portion having an insertion slot into which the optical waveguide plug is inserted; and a convex portion formed inside the cylindrical portion and appearing on a surface of the optical waveguide plug. An elastic part that can be locked to a part, and a lock key insertion space for inserting a lock key that restricts movement of the elastic part in a direction to unlock the convex part of the optical waveguide plug. To do.

本発明の第６の態様に係る光送受信機は、第５の態様において、前記筒状部には前記ロックキーの先端をはみ出させる開口部が設けられていることを特徴とする。   The optical transceiver according to the sixth aspect of the present invention is characterized in that, in the fifth aspect, the cylindrical portion is provided with an opening for protruding the tip of the lock key.

本発明によれば光導波路プラグの凸部に係止される弾性片の変位を防止するロックキーを光送受信機内に挿入できるようにしたので、光送受信機内に光導波路プラグを差し込んだ状態でそのロックキーにより光導波路プラグの抜けが防止される。   According to the present invention, since the lock key for preventing the displacement of the elastic piece locked to the convex portion of the optical waveguide plug can be inserted into the optical transceiver, the optical waveguide plug is inserted into the optical transceiver in the state where the optical waveguide plug is inserted. The lock key prevents the optical waveguide plug from coming off.

以下に本発明の実施の形態を図面に基づいて詳細に説明する。
図１は、本発明の一実施形態に係る光送受信機の蓋体を外した状態を示す平面図、図２はその光送受信機の側面図である。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a plan view showing a state where a cover of an optical transceiver according to an embodiment of the present invention is removed, and FIG. 2 is a side view of the optical transceiver.

図１、図２に示す光送受信機１の外面には、上面開放のケース本体２と、ケース本体２の一端の開口部に嵌め合わされる略筒状のレセプタクル３と、ケース本体２の上に被せられる蓋体２ａとが現れ、それらは例えば樹脂から形成されている。ケース本体２の中には、受光素子４、発光素子５及び回路基板６等が収容され、さらに、ケース本体２の下からは回路基板６に一端が接続されるリードピン７の他端が突出している。レセプタクル３のうちケース本体２に接続されない側の端部にはプラグ挿入口３ｂが設けられている。なお、図中符合８は、レセプタクル３の側部に設けられた窓を示している。   On the outer surface of the optical transceiver 1 shown in FIGS. 1 and 2, there are a case body 2 with an open top surface, a substantially cylindrical receptacle 3 fitted into an opening at one end of the case body 2, and a case body 2. The cover 2a to be covered appears, and they are made of resin, for example. The case body 2 accommodates the light receiving element 4, the light emitting element 5, the circuit board 6, and the like, and the other end of the lead pin 7 whose one end is connected to the circuit board 6 protrudes from below the case body 2. Yes. A plug insertion port 3b is provided at the end of the receptacle 3 that is not connected to the case body 2. In the figure, reference numeral 8 indicates a window provided on the side of the receptacle 3.

受光素子４としてキャンタイプの光電変換素子、例えばｐｉｎ−フォトダイオードが用いられ、その外部端子４ｐは回路基板６の受信回路に電気的に接続される。また、発光素子５としてキャンタイプの例えば面発光型半導体レーザ（ＶＣＳＥＬ）が用いられ、その外部端子５ｐは回路基板６内のドライバ回路に電気的に接続される。   A can-type photoelectric conversion element such as a pin-photodiode is used as the light receiving element 4, and its external terminal 4 p is electrically connected to a receiving circuit on the circuit board 6. Further, a can type, for example, a surface emitting semiconductor laser (VCSEL) is used as the light emitting element 5, and its external terminal 5 p is electrically connected to a driver circuit in the circuit board 6.

受光素子４と発光素子５は、レセプタクル３とケース本体２との嵌合部分及びその周辺に配置される光結合素子１０に取り付けられる。   The light receiving element 4 and the light emitting element 5 are attached to the fitting portion between the receptacle 3 and the case main body 2 and the optical coupling element 10 disposed in the periphery thereof.

光結合素子１０は、レセプタクル３の内部で支持される略平板状の装着部１１と、装着部１１の一面側に横方向に配置される第１及び第２のファイバ嵌入筒１２，１３と、装着部１１の他面側に斜め方向に配置される受光素子嵌入筒１４及び発光素子嵌入筒１５と、発光素子嵌入筒１５と第２のファイバ嵌入筒１３を光結合するプリズム部１６とが樹脂材を用いて一体成形されている。その樹脂材として、例えば外部雰囲気に対する屈折率が高い材料、例えば屈折率が１．５以上の樹脂材、より具体的には水素メタセシス開環重合体がある。   The optical coupling element 10 includes a substantially flat mounting portion 11 supported inside the receptacle 3, first and second fiber insertion cylinders 12 and 13 disposed laterally on one surface side of the mounting portion 11, A light receiving element insertion tube 14 and a light emitting element insertion tube 15 which are arranged obliquely on the other surface side of the mounting portion 11, and a prism portion 16 which optically couples the light emitting element insertion tube 15 and the second fiber insertion tube 13 are made of resin. It is integrally molded using materials. Examples of the resin material include a material having a high refractive index with respect to the external atmosphere, such as a resin material having a refractive index of 1.5 or more, more specifically, a hydrogen metathesis ring-opening polymer.

第１及び第２のファイバ嵌入筒１２，１３の内径はそれぞれ非特許文献１に記載されたＳＭＩプラグのフェルールが嵌め込まれる大きを有している。また、受光素子嵌入筒１４は上述したようなキャンタイプの受光素子４を嵌め込み得る内径を有し、さらに、発光素子嵌入筒１５は上記のキャンタイプの発光素子５を嵌め込み得る内径を有している。   The inner diameters of the first and second fiber insertion cylinders 12 and 13 are large enough to fit the ferrules of the SMI plug described in Non-Patent Document 1, respectively. The light receiving element insertion cylinder 14 has an inner diameter capable of fitting the can type light receiving element 4 as described above, and the light emitting element insertion cylinder 15 has an inner diameter capable of fitting the can type light emitting element 5. Yes.

そして、第１、第２のファイバ嵌入筒１２，１３をレセプタクル３内に向けるとともに、受光素子４、発光素子５がそれぞれ嵌入された受光素子嵌入筒１４及び発光素子嵌入筒１５をケース本体２へ突出させるような向きで、装着部１１の上部の突起１１ａをレセプタクル３の取付溝３ａ内に嵌め込む。これにより光結合素子１０はレセプタクル３内に固定される。   Then, the first and second fiber insertion cylinders 12 and 13 are directed into the receptacle 3, and the light receiving element insertion cylinder 14 and the light emitting element insertion cylinder 15 into which the light receiving element 4 and the light emitting element 5 are inserted are respectively connected to the case body 2. The protrusion 11 a at the top of the mounting portion 11 is fitted into the mounting groove 3 a of the receptacle 3 in such a direction as to project. As a result, the optical coupling element 10 is fixed in the receptacle 3.

レセプタクル３のうち図２のII−II線から見た断面は図３のようになり、ケース本体２側から見たレセプタクル３の後端面は図４のように現れる。また、光結合素子１０が装着されたレセプタクル３とその近傍のケース本体２についての図１でのＩ−Ｉ線断面は図６（ａ）の右側に示すようになっている。   The section of the receptacle 3 viewed from the line II-II in FIG. 2 is as shown in FIG. 3, and the rear end surface of the receptacle 3 viewed from the case body 2 side appears as shown in FIG. Further, the cross section taken along the line II in FIG. 1 of the receptacle 3 to which the optical coupling element 10 is mounted and the case body 2 in the vicinity thereof is as shown on the right side of FIG.

レセプタクル３内部では、ケース本体２寄りの天井面を固定端とし、且つプラグ挿入口３ｂ寄りを自由端とした略Ｌ字形の弾性片３１が天井面にほぼ平行に伸びて形成され、その弾性片３１の自由端には下側に突出した係止部３２が形成されている。また、弾性片３１は、固定端を除いて、天井面に対して所定の大きさの隙間Ｗを有している。   Inside the receptacle 3, a substantially L-shaped elastic piece 31 having a ceiling surface near the case body 2 as a fixed end and a free end near the plug insertion port 3b is formed extending substantially parallel to the ceiling surface. The free end of 31 is formed with a locking portion 32 protruding downward. The elastic piece 31 has a gap W having a predetermined size with respect to the ceiling surface except for the fixed end.

また、レセプタクル３の内部には、プラグ挿入口３ｂから弾性片３１の上を通り、さらに弾性片３１の固定端の両側を通ってケース本体２寄りの端部に達するキー挿入スペース３３が形成され、その端部には図４に示すようなキーはみ出し用の開口部３５が形成されている。そのロックキー挿入スペース３３は、図５に示すロックキー２０を嵌め込むスペースであり、弾性片３１が退避可能なスペースでもある。   In addition, a key insertion space 33 is formed inside the receptacle 3 so as to pass from the plug insertion port 3b over the elastic piece 31 and further through both sides of the fixed end of the elastic piece 31 to reach the end near the case body 2. At the end, an opening 35 for protruding the key as shown in FIG. 4 is formed. The lock key insertion space 33 is a space into which the lock key 20 shown in FIG. 5 is fitted, and is also a space in which the elastic piece 31 can be retracted.

ロックキー２０は、レセプタクル３のプラグ挿入口３ｂよりも幅の広い把持部２１と、把持部２１に繋がる差し込み部２２と、差し込み部２２の途中から先端にかけて略Ｕ字状に割れた枝部２３，２４と、２つの枝部２３，２４のそれぞれの先端で外向きに突出した係止部２５，２６とが樹脂により一体成形された構造を有している。なお、ロックキー２０は、ケース本体２、蓋体２ａ及びレセプタクル３に対して目立ちやすい色、例えば赤に着色されている。   The lock key 20 includes a gripping part 21 wider than the plug insertion port 3b of the receptacle 3, an insertion part 22 connected to the gripping part 21, and a branch part 23 that is split in a substantially U shape from the middle of the insertion part 22 to the tip. , 24 and the locking portions 25, 26 projecting outward at the tips of the two branch portions 23, 24 are integrally formed of resin. The lock key 20 is colored in a color that is easily noticeable with respect to the case body 2, the lid 2a, and the receptacle 3, for example, red.

レセプタクル３のプラグ挿入口３ｂを通して光結合素子１０に接続されるＳＭＩプラグ４０は、図６（ａ）、図７（ａ）の左側に示すように、光ケーブル４１に接続されるプラグ本体４２と、光ケーブル４１内から引き出されたプラスチック光ファイバ４３が挿入され且つプラグ本体４２の先端から突出する２つのフェルール４４，４５と、プラグ本体４２のうちフェルール４４，４５の周囲に形成されて光結合素子１０のファイバ嵌入筒１２，１３を嵌め込む光結合素子嵌入溝４６と、プラグ本体４２の上面のうちフェルール４４，４５の上方とその後方に至る領域に形成された摺動溝４７と、摺動溝４７のほぼ中央領域の両側にそれぞれ形成された凸部４８とを有している。その凸部４８の前後の端は、レセプタクル３内で弾性片３１の乗り上げが可能な傾斜面となっている   The SMI plug 40 connected to the optical coupling element 10 through the plug insertion port 3b of the receptacle 3 includes a plug body 42 connected to the optical cable 41, as shown on the left side of FIGS. 6 (a) and 7 (a). Two optical ferrules 44 and 45 into which a plastic optical fiber 43 drawn out from the optical cable 41 is inserted and projecting from the tip of the plug main body 42, and the optical coupling element 10 are formed around the ferrules 44 and 45 of the plug main body 42. An optical coupling element insertion groove 46 into which the fiber insertion cylinders 12 and 13 are inserted, a sliding groove 47 formed in a region of the upper surface of the plug body 42 extending above and behind the ferrules 44 and 45, and a sliding groove 47 and convex portions 48 respectively formed on both sides of a substantially central region. The front and rear ends of the convex portion 48 are inclined surfaces that allow the elastic piece 31 to ride in the receptacle 3.

以上のような構成を有するＳＭＩプラグ４０と光送受信機１は次のような手順で接続され、さらにその接続がロックされる。
まず、図６（ａ）、図７（ａ）に示すように、ＳＭＩプラグ４０の先端と光送受信機１のレセプタクル３のプラグ挿入口３ｂを対向させた状態で、ＳＭＩプラグ４０を光送受信機１のプラグ挿入口３ｂ内に差し込むと、レセプタクル３内で弾性片３１の係止部３２がＳＭＩプラグ４０の摺動溝４７内を摺動する過程において摺動溝４７内の凸部４８により持ち上げられてキー挿入スペース３３内に一時的に退避し、さらに摺動することにより自身のバネ性によって凸部４８から降下してキー挿入スペース３３からほぼ元の位置に戻る。これにより、図６（ｂ）、図７（ｂ）に示すように、フェルール４４，４５は光結合体１０のファイバ嵌入筒１２，１３内に嵌め込まれるとともに、ファイバ嵌入筒１２，１３がＳＭＩプラグ４０の光結合素子嵌入溝４６内に嵌め込まれる。 The SMI plug 40 having the above configuration and the optical transceiver 1 are connected by the following procedure, and the connection is locked.
First, as shown in FIGS. 6A and 7A, the SMI plug 40 is connected to the optical transceiver with the tip of the SMI plug 40 and the plug insertion port 3b of the receptacle 3 of the optical transceiver 1 facing each other. 1 is inserted into the plug insertion slot 3b, the latch 32 of the elastic piece 31 is lifted by the projection 48 in the sliding groove 47 in the process of sliding in the sliding groove 47 of the SMI plug 40 in the receptacle 3. Then, it is temporarily retracted into the key insertion space 33 and further slides to descend from the convex portion 48 due to its own springiness, and returns almost from the key insertion space 33 to its original position. Accordingly, as shown in FIGS. 6B and 7B, the ferrules 44 and 45 are fitted in the fiber insertion cylinders 12 and 13 of the optical coupler 10, and the fiber insertion cylinders 12 and 13 are connected to the SMI plug. 40 optical coupling element insertion grooves 46 are fitted.

ＳＭＩプラグ４０の摺動溝４７内の凸部４８の前後端は弾性片３１の係止部３２が乗り上げが可能な傾斜面となっているので、図６（ｂ）、図７（ｂ）に示す状態のままでは、レセプタクル３に対してＳＭＩプラグ４０が抜けやすい状態となっている。   Since the front and rear ends of the convex portion 48 in the sliding groove 47 of the SMI plug 40 are inclined surfaces on which the engaging portion 32 of the elastic piece 31 can ride, FIG. 6B and FIG. In the state shown, the SMI plug 40 is easily removed from the receptacle 3.

そこで、図５に示したロックキー２０の把持部２１を手に持って、その先端をＳＭＩプラグ４０上に摺動させながらレセプタクル３のプラグ挿入口３ｂ内に押し込むと、ロックキー２０はレセプタクル３の天井面に接触しながら弾性片３１の自由端上の案内斜面３１ａの上に乗り、さらにキー挿入スペース３３に入り込んで把持部２１がレセプタクル３端に当たって停止する。この場合、ロックキー２０の２つの枝部２３，２４の先端の外向きの係止部２５，２６はキー挿入スペース３３の両側壁からの圧力により枝部２３，２４を撓ませて互いの間隔を狭めながら弾性片３１の固定端の両側を通ってレセプタクル３の開口部３５からケース本体２側にはみ出す。この状態では、２つの枝部２３，２４先端の外向きの係止部２５，２６はレセプタクル３の端部の開口３５からはみ出して枝部２３，２４の互いの間隔を戻す。   Therefore, when the holding part 21 of the lock key 20 shown in FIG. 5 is held and the tip of the lock key 20 is slid onto the SMI plug 40 and pushed into the plug insertion port 3b of the receptacle 3, the lock key 20 is moved to the receptacle 3. Steps on the guide slope 31a on the free end of the elastic piece 31 while coming into contact with the ceiling surface of the elastic piece 31, and further enters the key insertion space 33 so that the holding portion 21 hits the end of the receptacle 3 and stops. In this case, the outward locking portions 25 and 26 at the tips of the two branch portions 23 and 24 of the lock key 20 are bent by the pressure from both side walls of the key insertion space 33 so as to be spaced apart from each other. Narrows the width of the elastic piece 31 through the both ends of the fixed end and protrudes from the opening 35 of the receptacle 3 to the case body 2 side. In this state, the outward locking portions 25 and 26 at the tips of the two branch portions 23 and 24 protrude from the opening 35 at the end of the receptacle 3 to return the distance between the branch portions 23 and 24.

このようにしてレセプタクル３内に嵌め込まれたロックキー２０は、図６（ｃ）、図７（ｃ）、図８に示すように弾性片３１とレセプタクル３の天井面の間に挟まれるとともに、その先端の係止部２５，２６はレセプタクル３と後端面で係止するので、レセプタクル３から脱落しにくい状態となっている。   The lock key 20 fitted in the receptacle 3 in this way is sandwiched between the elastic piece 31 and the ceiling surface of the receptacle 3 as shown in FIGS. 6 (c), 7 (c), and 8, and Since the locking portions 25 and 26 at the front ends are locked to the receptacle 3 at the rear end surface, the locking portions 25 and 26 are not easily dropped from the receptacle 3.

また、レセプタクル３からＳＭＩプラグ４０を抜こうとしても、レセプタクル３内の弾性片３１は上方への変位がロックキー２０の差し込み部２２により規制されているので、弾性片３１は摺動溝３７内の凸部３８を乗り上げることができない状態となる。しかも、ＳＭＩプラグ４０を引き抜くと凸部３８により弾性片３１を持ち上げる力が加わるので、弾性片３１とレセプタクル３の天井面によるロックキー２０を挟む力が増し、ロックキー２０はさらに抜けにくい状態となる。   Even if the SMI plug 40 is to be removed from the receptacle 3, the elastic piece 31 in the receptacle 3 is restricted from being displaced upward by the insertion portion 22 of the lock key 20. It will be in the state which cannot ride on the convex part 38 of this. In addition, when the SMI plug 40 is pulled out, a force for lifting the elastic piece 31 by the convex portion 38 is applied, so that the force between the elastic piece 31 and the lock key 20 by the ceiling surface of the receptacle 3 is increased, and the lock key 20 is more difficult to remove. Become.

従って、ＳＭＩプラグ４０が嵌め込まれたレセプタクル３にロックキー２０を差し込むことにより、光送受信機１又は光ケーブル４１を移動しながらでも光信号の送受信を安心して行えることになる。   Therefore, by inserting the lock key 20 into the receptacle 3 in which the SMI plug 40 is fitted, it is possible to transmit and receive optical signals with peace of mind while moving the optical transceiver 1 or the optical cable 41.

また、ＳＭＩプラグ４０をレセプタクル３から積極的に抜く場合には、外部から僅かな力を加えてロックキー２０をレセプタクル３から引き出すと、ロックキー２０先端の係止部２５，２６とレセプタクル３後端との係止が解け、ロックキー２０は図７（ｂ）に示すようにキー挿入スペース３３から抜け出す。
これにより、レセプタクル３内で弾性片３１がキー挿入スペース３３へ退避することが可能になるので、弾性片３１の係止部３２とＳＭＩプラグ４０の突起３８の係止は容易に解ける状態となる。さらに、プラグ本体４２に少し力を加えてレセプタクル３から引き出せば、ＳＭＩプラグ４０と光送受信機１の接続が解除される。 When the SMI plug 40 is positively removed from the receptacle 3, when a slight force is applied from the outside to pull out the lock key 20 from the receptacle 3, the locking portions 25 and 26 at the front end of the lock key 20 and the receptacle 3 The lock with the end is released, and the lock key 20 comes out of the key insertion space 33 as shown in FIG.
As a result, the elastic piece 31 can be retracted into the key insertion space 33 in the receptacle 3, so that the engagement between the engagement portion 32 of the elastic piece 31 and the protrusion 38 of the SMI plug 40 can be easily released. . Further, if the plug body 42 is slightly pulled and pulled out from the receptacle 3, the connection between the SMI plug 40 and the optical transceiver 1 is released.

なお、上記のロックキー２０は２つの枝部２３，２４のうち一方だけでも係止状態にあれば、ロックキー２０のレセプタクル３からの脱落を防止できる。また、枝部２３，２４の先端に設けられた係止部２５，２６は２つの枝部２３，２４の内側に突出してレセプタクル３の後端の壁に係止できるものであってもよい。   If only one of the two branch portions 23 and 24 is in the locked state, the lock key 20 can be prevented from dropping from the receptacle 3. Further, the locking portions 25, 26 provided at the tips of the branch portions 23, 24 may protrude inside the two branch portions 23, 24 and can be locked to the rear end wall of the receptacle 3.

図１は、本発明の実施形態に係る光送受信機を示す平面図である。FIG. 1 is a plan view showing an optical transceiver according to an embodiment of the present invention. 図２（ａ）は、本発明の実施形態に係る光送受信機を示す側面図、図２（ｂ）はその内部に取り付けられる光結合素子を示す斜視図である。2A is a side view showing an optical transceiver according to the embodiment of the present invention, and FIG. 2B is a perspective view showing an optical coupling element attached to the inside thereof. 図３は、本発明の実施形態に係る光送受信機のレセプタクルを示す断面図である。FIG. 3 is a sectional view showing a receptacle of the optical transceiver according to the embodiment of the present invention. 図４は、本発明の実施形態に係る光送受信機のレセプタクルの端面図である。FIG. 4 is an end view of the receptacle of the optical transceiver according to the embodiment of the present invention. 図５は、本発明の実施形態に係る光結合ロックキーを示す斜視図である。FIG. 5 is a perspective view showing an optical coupling lock key according to an embodiment of the present invention. 図６（ａ）〜（ｃ）は、本発明の実施形態に係る光導波路プラグと光送受信機の接続の手順を示す断面図である。6A to 6C are cross-sectional views showing a procedure for connecting the optical waveguide plug and the optical transceiver according to the embodiment of the present invention. 図７（ａ）〜（ｃ）は、本発明の実施形態に係る光導波路プラグと光送受信機の接続の手順を示す平面図である。FIGS. 7A to 7C are plan views showing a procedure for connecting the optical waveguide plug and the optical transceiver according to the embodiment of the present invention. 図８は、本発明の実施形態に係る光送受信機にロックキーを差し込んだ状態を示す平面図である。FIG. 8 is a plan view showing a state in which the lock key is inserted into the optical transceiver according to the embodiment of the present invention. 図９は、従来技術に係る光結合素子を示す斜視図である。FIG. 9 is a perspective view showing an optical coupling element according to the prior art.

符号の説明Explanation of symbols

１：光送受信機
２：ケース本体
３：レセプタクル（筒状部）
４：受光素子
５：発光素子
６：回路基板
７：リードピン
１０：光結合素子
１１：装着部
１２，１３：ファイバ嵌入筒
１４：受光素子嵌入筒
１５：発光素子嵌入筒
１６：プリズム部
２０：ロックキー
２１：把持部
２２：差し込み部
２３，２４：枝部
２５，２６：係止部
３１：弾性片
３２：係止部
３３：キー挿入スペース
３５：開口
４０：ＳＭＩプラグ
４２：プラグ本体
４３：プラスチック光ファイバ
４７：摺動溝
４８：凸部 1: Optical transceiver 2: Case body 3: Receptacle (cylindrical part)
4: Light receiving element 5: Light emitting element 6: Circuit board 7: Lead pin 10: Optical coupling element 11: Mounting portion 12, 13: Fiber insertion cylinder 14: Light receiving element insertion cylinder 15: Light emitting element insertion cylinder 16: Prism section 20: Lock Key 21: Grasping part 22: Insertion part 23, 24: Branch part 25, 26: Locking part 31: Elastic piece 32: Locking part 33: Key insertion space 35: Opening 40: SMI plug 42: Plug body 43: Plastic Optical fiber 47: sliding groove 48: convex portion

Claims (6)

光送受信機内に差し込まれる光導波路プラグ表面の凸部と係止する弾性片の変位を該光送受信機内で規制する差し込み部と、
前記差し込み部の先端部分に設けられて前記光送受信機の壁に係止する係止部と、
前記差し込み部に繋がる把持部と
を有することを特徴とする光素子結合ロックキー。 An insertion part for restricting the displacement of the elastic piece to be engaged with the convex part of the surface of the optical waveguide plug inserted into the optical transceiver, in the optical transceiver;
A locking portion that is provided at a tip portion of the insertion portion and locks to a wall of the optical transceiver;
An optical element coupling lock key comprising: a grip portion connected to the insertion portion. 前記係止部は、前記差し込み部の途中から先端にかけて分岐された分岐部の先端で側方に突出して形成されていることを特徴とする請求項１に記載の光素子結合ロックキー。 2. The optical element coupling lock key according to claim 1, wherein the locking portion is formed to protrude laterally at a distal end of a branching portion branched from the middle to the distal end of the insertion portion. 少なくとも前記差し込み部と前記分岐部は弾性材より形成されていることを特徴とする請求項２に記載の光素子結合ロックキー。 3. The optical element coupling lock key according to claim 2, wherein at least the insertion part and the branch part are formed of an elastic material. 前記把持部は、前記差し込み部よりも幅が広くて前記光送受信機から露出する形状を有していることを特徴とする請求項１乃至請求項３のいずれか１つに記載の光素子結合ロックキー。 4. The optical element coupling according to claim 1, wherein the grip portion has a shape that is wider than the insertion portion and is exposed from the optical transceiver. 5. Lock key. 光導波路プラグのフェルールを嵌入する光導波路嵌入筒と光素子を嵌入する光素子嵌入筒とが形成された光結合部と、
前記光導波路プラグが差し込まれる挿入口を有するとともに前記光結合部が内部に装着される筒状部と、
前記筒状部の内部に形成され且つ前記光導波路プラグの表面に現れる凸部に係止可能な弾性部と、
前記光導波路プラグの前記凸部との係止を解く方向への前記弾性部の移動を規制するロックキーを挿入するロックキー挿入スペースと
を有することを特徴とする光送受信機。 An optical coupling portion formed with an optical waveguide insertion cylinder for inserting an optical waveguide plug ferrule and an optical element insertion cylinder for inserting an optical element;
A cylindrical portion having an insertion port into which the optical waveguide plug is inserted and in which the optical coupling portion is mounted;
An elastic part that is formed inside the cylindrical part and can be locked to a convex part appearing on the surface of the optical waveguide plug;
An optical transceiver comprising: a lock key insertion space into which a lock key for restricting movement of the elastic portion in a direction to release the engagement with the convex portion of the optical waveguide plug is inserted. 前記筒状部には前記ロックキーの先端をはみ出させる開口部が設けられていることを特徴とする請求項５に記載の光送受信機。 The optical transceiver according to claim 5, wherein an opening for protruding a tip of the lock key is provided in the cylindrical portion.
JP2005161138A 2005-06-01 2005-06-01 Optical element coupling lock key and optical transmitter-receiver Pending JP2006337637A (en)

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Cited By (22)

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