JP2567390B2 - Optical connector - Google Patents
Optical connectorInfo
- Publication number
- JP2567390B2 JP2567390B2 JP62071753A JP7175387A JP2567390B2 JP 2567390 B2 JP2567390 B2 JP 2567390B2 JP 62071753 A JP62071753 A JP 62071753A JP 7175387 A JP7175387 A JP 7175387A JP 2567390 B2 JP2567390 B2 JP 2567390B2
- Authority
- JP
- Japan
- Prior art keywords
- locking
- elastic
- piece
- projection
- locking claw
- 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 - Lifetime
Links
Landscapes
- Mechanical Coupling Of Light Guides (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は光ファイバ相互間、あるいは光ファイバと光
素子間を光学的に結合するための光コネクタに関するも
のである。TECHNICAL FIELD The present invention relates to an optical connector for optically coupling optical fibers to each other or between an optical fiber and an optical element.
（従来の技術） 一般に、光コネクタはアダプタとプラグの締結方式か
ら大別すると、回転締結式と非回転締結式とがある。非
回転締結式の光コネクタはプラグ挿抜に必要な操作空間
が小さく高密度実装に適する。非回転締結式の光コネク
タとしては、従来、電子通信学会技術報告C85−128「低
コスト、高性能プッシュホン光コネクタ」に記載され
た、第２図に示すようなプッシュオンロックの光コネク
タが知られている。(Prior Art) Generally, an optical connector is roughly classified into a rotary fastening type and a non-rotational fastening type, according to a fastening system of an adapter and a plug. The non-rotational fastening type optical connector requires a small operation space for plug insertion / removal and is suitable for high-density mounting. As a non-rotatable type optical connector, a push-on lock type optical connector as shown in Fig. 2 described in the technical report C85-128 "low cost, high performance push-phone optical connector" has been known. Has been.
第２図において、１はアダプタ、８はプラグである。
アダプタ１は、ハウジング２内に片持ち梁状に支持され
た弾性片４の先端に係止爪６と挿抜用突起５とを形成し
てなる弾性係止片３と整列スリーブ７を有する。プラグ
８はプラグフレーム９とツマミ10を有する。プラグフレ
ーム９は光コード11の図示されてない光ファイバを整列
固定したフェルール12を揺動させて内蔵するとともに、
弾性係止片３の係止爪６を係止する締結用突起13と凹部
14を設けている。またプラグフレーム９の後端には光コ
ード11の図示されてないケブラが取り付けられている。
ツマミ10はプラグフレーム９の外面上に摺動可能に挿着
されるとともに、アダプタ１に対するプラグ８の挿抜に
おいて、プラグフレーム９の前進又は後退に際し、挿抜
用突起５を押し上げて弾性係止片３を開く斜面15と斜面
16を設けている。In FIG. 2, 1 is an adapter and 8 is a plug.
The adapter 1 has an elastic locking piece 3 formed by forming a locking claw 6 and an insertion / removal projection 5 at the tip of an elastic piece 4 supported in a cantilever shape inside the housing 2, and an alignment sleeve 7. The plug 8 has a plug frame 9 and a knob 10. The plug frame 9 oscillates and incorporates a ferrule 12 in which an optical fiber (not shown) of an optical cord 11 is aligned and fixed, and
Fastening protrusion 13 and recess for locking the locking claw 6 of the elastic locking piece 3
14 are provided. A Kevlar (not shown) of the optical cord 11 is attached to the rear end of the plug frame 9.
The knob 10 is slidably mounted on the outer surface of the plug frame 9, and when the plug 8 is inserted into or removed from the adapter 1, when the plug frame 9 is moved forward or backward, the insertion projection 5 is pushed up and the elastic locking piece 3 is inserted. Open slope 15 and slope
16 are provided.
このような構成になっているので、プラグ挿抜はツマ
ミ10を摺動して次のように行なえる。まず、プラグ８を
挿入するとツマミ10の斜面15がアダプタ１の挿抜用突起
５に突き当り、次いで挿抜用突起５が斜面15に沿って上
方に変位するので、弾性係止片３が開く。さらにプラグ
８を挿入すると、挿抜用突起５が斜面16を下り、弾性係
止片３が初めの位置に戻ることにより、係止爪６が凹部
14に入り、締結用突起13に係止してロックが完了する。
プラグ８を引抜く場合はツマミ10を後方に引くとツマミ
10だけが動いて斜面16が挿抜用突起５に突き当り、これ
を上方に押し上げる。その結果、弾性係止片３が開き、
係止爪６がプラグ８の凹部14から抜けて締結用突起13と
の係止が外れ、ロックが解除される。ロックされた状態
ではツマミ10を動かさない限り、光コード11に引張力が
働いてもプラグ８がアダプタ１から外れることはない、
光コード11に引張力が働いたときは引張力はプラグフレ
ーム９の後端、プラグフレームの凹部14、係止爪６、弾
性係止片３、アダプタハウジング２と伝わる。このとき
フェルール12はプラグフレーム９内で浮動しているの
で、上述の引張力がフェルール12に加わることはなく、
したがって光信号が減少することもない。With such a structure, the plug can be inserted and removed by sliding the knob 10 as follows. First, when the plug 8 is inserted, the slant surface 15 of the knob 10 abuts on the insertion / removal projection 5 of the adapter 1, and then the insertion / removal projection 5 is displaced upward along the slant surface 15, so that the elastic locking piece 3 is opened. When the plug 8 is further inserted, the insertion / removal projection 5 goes down the slope 16 and the elastic locking piece 3 returns to the initial position, so that the locking claw 6 is recessed.
14 enters and is locked to the fastening projection 13 to complete the lock.
When pulling out the plug 8, pull the knob 10 backwards.
Only 10 moves and the slope 16 hits the insertion / extraction projection 5 and pushes it upward. As a result, the elastic locking piece 3 opens,
The locking claw 6 comes out of the recess 14 of the plug 8 and is disengaged from the fastening projection 13 to release the lock. In the locked state, unless the knob 10 is moved, the plug 8 will not come off from the adapter 1 even if a tensile force acts on the optical cord 11.
When a tensile force acts on the optical cord 11, the tensile force is transmitted to the rear end of the plug frame 9, the recess 14 of the plug frame, the locking claw 6, the elastic locking piece 3, and the adapter housing 2. At this time, since the ferrule 12 is floating in the plug frame 9, the above-mentioned tensile force is not applied to the ferrule 12,
Therefore, the optical signal does not decrease.
（発明が解決しようとする問題点） しかし、上記のような構成の光コネクタにおいては、
引張力が大きくなると係止爪６と締結用突起13との係止
状態において、係止爪６が締結用突起13との係止部を滑
り、係止が外れてプラグ８がアダプタ１から外れる欠点
があった。(Problems to be Solved by the Invention) However, in the optical connector having the above configuration,
When the pulling force becomes large, the locking claw 6 slides on the locking portion with the fastening projection 13 in the locked state of the locking claw 6 and the fastening projection 13, and the locking is released so that the plug 8 is disengaged from the adapter 1. There was a flaw.
本発明の目的はこれらの欠点に鑑み、光コードに大き
な引張力が加わっても、ツマミを動かさないかぎり、プ
ラグがアダプタから外れることがない光コネクタを提供
することにある。In view of these drawbacks, an object of the present invention is to provide an optical connector in which the plug does not come off from the adapter unless the knob is moved even when a large tensile force is applied to the optical cord.
（問題点を解決するための手段） 本発明は上記目的を達成するため、ハウジング内に片
持ち梁状に支持された弾性片の先端に係止爪と挿抜用突
起とを形成してなる弾性係止片を有するアダプタ並びに
該アダプタに挿入され該係止爪を係止する締結用突起を
有するプラグフレームと、該プラグフレームの外面上に
摺動可能に装着され後退に際し該挿抜用突起を押し上げ
て該弾性係止片を開き、該係止爪と締結用突起との係止
を解除するツマミとを有するプラグから構成された光コ
ネクタにおいて、 該弾性片の中心軸と該係止爪が該締結用突起と接する
点との距離をＳとし、該弾性片の支持部と該係止爪が該
締結用突起と接する点との距離をｌとした場合、該係止
爪と該締結用突起との摩擦係数μを μ3S/2l を満足させるようにした。(Means for Solving the Problems) In order to achieve the above object, the present invention is an elastic member in which a locking claw and an insertion / removal projection are formed at the tip of an elastic piece supported in a cantilever shape in a housing. An adapter having a locking piece, a plug frame having a fastening projection that is inserted into the adapter to lock the locking claw, and is slidably mounted on the outer surface of the plug frame and pushes up the insertion / removal projection when retracting. In the optical connector including a plug having a knob for opening the elastic locking piece and releasing the locking between the locking claw and the fastening projection, the central axis of the elastic piece and the locking claw are When the distance between the point of contact with the fastening projection is S and the distance between the support portion of the elastic piece and the point of contact between the locking claw and the fastening projection is l, the locking claw and the fastening projection The friction coefficient μ with and is set to satisfy μ3S / 2l.
（作用） 本発明によれば、係止爪と締結用突起との摩擦係数を
大きくしたので、係止爪と締結用突起との係止を強固に
でき、光コードに大きな引張力が加わっても、ツマミを
動かさないかぎりプラグがアダプタから外れることがな
い。(Operation) According to the present invention, since the coefficient of friction between the locking claw and the fastening projection is increased, the locking claw and the fastening projection can be firmly locked, and a large tensile force is applied to the optical code. However, the plug will not come off from the adapter unless the knob is moved.
（実施例） 第１図は本発明の実施例を説明するために要部を拡大
して示した正面図で、従来例と同一構成部分は同一符号
をもって表わす。すなわち、第１図は第２図に示した光
コネクタにおいて、ハウジング２内に片持ち梁状に支持
された弾性係止片３の弾性片４の先端側が支持部2aを通
る弾性片４の中心軸4aに対して一定量跳ね上がって、係
止爪６と締結用突起13とが係止している状態を示してお
り、その他の構成は第２図と同様である。(Embodiment) FIG. 1 is a front view showing an enlarged main part for explaining an embodiment of the present invention, and the same components as those of the conventional example are represented by the same reference numerals. That is, FIG. 1 shows that in the optical connector shown in FIG. 2, the tip of the elastic piece 4 of the elastic locking piece 3 supported in the housing 2 in a cantilever manner is the center of the elastic piece 4 passing through the support portion 2a. The figure shows a state in which the locking claw 6 and the fastening projection 13 are locked by jumping up a certain amount with respect to the shaft 4a, and other configurations are the same as in FIG.
かかる状態において、係止爪６と締結用突起13との接
点における力の釣り合いを考えると次式が成立する。In this state, considering the balance of forces at the contact points between the locking claw 6 and the fastening projection 13, the following equation is established.
（3S/2l）・Ｆ−μ0Fcos2φ ＋Fsinφcosφ＝6EIδ/l3 ……（１） ここで左辺の第１項は光コード引張力Ｆによって発生
するモーメントにより弾性係止片３を上方に押し上げる
力、第２項は係止爪６と締結用突起13との摩擦力、第３
項は引張力Ｆの分力である。また右辺は弾性係止片３に
おける弾性片４のバネ力である。δは弾性係止片３のた
わみ、Ｓは弾性片４の中心軸4aと、係止爪６が締結用突
起13と接する点との距離、ｌは弾性片４の根元すなわち
支持部2aから係止爪６が締結用突起と接する点との距
離、μは係止爪６と締結用突起13の摩擦係数であり、φ
は係止爪６の係止用側面6aと締結用突起13の係止用側面
13aとのなす角である。ただし、締結用突起13の係止爪
６と接する側面13aは弾性係止片３の弾性片４の中心軸4
aに対して直角になっているものとし、また弾性片４に
おける中心軸4aに平行な下辺と係止爪６の係止用側面6a
とのなす角17は直角になっているものとする。(3S / 2l) ・ F−μ 0 Fcos 2 φ + Fsin φcos φ = 6EIδ / l 3 (1) Here, the first term on the left side moves the elastic locking piece 3 upward by the moment generated by the optical cord tensile force F. The pushing force, the second term is the frictional force between the locking claw 6 and the fastening projection 13, and the third term is
The term is the component force of the tensile force F. The right side is the spring force of the elastic piece 4 in the elastic locking piece 3. δ is the deflection of the elastic locking piece 3, S is the distance between the center axis 4a of the elastic piece 4 and the point where the locking claw 6 contacts the fastening projection 13, and l is the root of the elastic piece 4, that is, the support portion 2a. The distance between the stop claw 6 and the point of contact with the fastening projection, μ is the coefficient of friction between the locking claw 6 and the fastening projection 13, and φ
Is the locking side surface 6a of the locking claw 6 and the locking side surface of the fastening protrusion 13.
It is an angle with 13a. However, the side surface 13a of the fastening projection 13 that contacts the locking claw 6 has the central axis 4 of the elastic piece 4 of the elastic locking piece 3.
It is assumed that it is perpendicular to a, and the lower side of the elastic piece 4 parallel to the central axis 4a and the locking side surface 6a of the locking claw 6
The angle 17 formed by and is assumed to be a right angle.
ここで、光コード引張力Ｆの最大値が締結強度FIMAX
になるから、式（１）からFIMAXは式（２）のようにな
る。Here, the maximum value of the tensile force F of the optical cord is the fastening strength F IMAX.
Therefore, from formula (1), F IMAX becomes like formula (2).
FIMAX＝（6EIδM／l3） ／（3S/2l−μ0cos2φM＋sinφMcos
φM） ……（２） 但し、δM，φMは締結が維持できるδ，φの最大値で
ある。締結強度を高くするには式（２）の分母を小さく
すればよい。分母＝０でかつφM＝０と置いたとき得ら
れる式（３）の値以下に摩擦係数μを設定すれば、締結
力の低下はない。F IMAX = (6EIδ M / l 3 ) / (3S / 2l−μ 0 cos 2 φ M + sin φ M cos
φ M ) (2) where δ M and φ M are the maximum values of δ and φ that can maintain the fastening. To increase the fastening strength, the denominator of equation (2) may be reduced. If the friction coefficient μ is set to be equal to or less than the value of the equation (3) obtained when denominator = 0 and φ M = 0, the fastening force does not decrease.
μ3S/2l ……（３） すなわち係止爪６と締結用突起13とは完全に係止さ
れ、光コードを引張ってもアダプタ１からプラグ８が外
れることはない。アダプタ１からプラグ８が外れるのは
弾性係止片３が破壊される場合であり、弾性係止片３の
材料定数と構造寸法で決まる強度以上の光コード引張力
が働いた場合である。μ3S / 2l (3) That is, the locking claw 6 and the fastening projection 13 are completely locked, and the plug 8 does not come off from the adapter 1 even if the optical cord is pulled. The plug 8 is disengaged from the adapter 1 when the elastic locking piece 3 is broken, and when the optical cord tensile force greater than the strength determined by the material constant of the elastic locking piece 3 and the structural dimension is exerted.
さらに、第３図に示すように弾性片４におけるその下
辺と係止爪６の係止用側面6aとのなす角17を鋭角にすれ
ば、係止爪６の係止用側面6aと締結用突起13の係止用側
面13aとのなす角は−φになるので、式（２）の分母の
第３項は負になる。このとき式（３）のμ＝3S/2lより
も小さな摩擦係数μで式（３）の分母＝０を満足するこ
とができるので、より望ましい効果が得られる。Furthermore, as shown in FIG. 3, if the angle 17 formed between the lower side of the elastic piece 4 and the locking side surface 6a of the locking claw 6 is an acute angle, the locking side surface 6a of the locking claw 6 for fastening. Since the angle formed by the protrusion 13 and the locking side surface 13a is -φ, the third term of the denominator of the equation (2) becomes negative. At this time, since the denominator of Expression (3) = 0 can be satisfied with the friction coefficient μ smaller than μ = 3S / 2l of Expression (3), a more desirable effect can be obtained.
なお、係止爪６の係止用側面6aおよび締結用突起13の
係止用側面13aの摩擦係数を大きくするには、公知の技
術が適用できるが、例えば次に示すようないずれかの方
法を用いればよい。A known technique can be applied to increase the friction coefficient of the locking side surface 6a of the locking claw 6 and the locking side surface 13a of the fastening projection 13; for example, one of the following methods Can be used.
（ｉ） 成形用の金型を放電加工で作成する場合、少な
くとも、係止爪６の係止用側面6aおよび締結用突起13の
係止用側面13aは、放電加工後の仕上げ加工を省略し、
荒れた状態のままにしておく。(I) When a molding die is created by electrical discharge machining, at least the engaging side surface 6a of the engaging claw 6 and the engaging side surface 13a of the fastening projection 13 need not be finished after the electric discharge machining. ,
Leave it rough.
（ii） 成形用の金型を作成する場合、少なくとも係止
爪６の係止用側面6aおよび締結用突起13の係止用側面13
aについては、微少な凹凸を付けて、荒らした状態にす
る。(Ii) When creating a molding die, at least the locking side surface 6a of the locking claw 6 and the locking side surface 13 of the fastening projection 13
About a, make a rough state with a slight unevenness.
なお、少量生産の形態としては成形した係止爪６の係
止片用側面6aおよび締結用突起13の係止用側面13aにサ
ンドペーパーをかけ、粗面化する方法でもよい。As a mode of small-scale production, a method may be used in which sandpaper is applied to the locking piece side surface 6a of the molded locking claw 6 and the locking side surface 13a of the fastening projection 13 to roughen the surface.
（発明の効果） 以上説明したように、本発明によれば、係止爪と締結
用突起との摩擦係数を所定値より大きくすることで、係
止爪と締結用突起との係止は外れることがなくなり、光
コードに引張力が加わった場合、弾性係止片の破断強度
まで引張力に耐えるので、アダプタとプラグとの締結強
度が向上する利点がある。(Effects of the Invention) As described above, according to the present invention, the locking between the locking claw and the fastening projection is released by increasing the friction coefficient between the locking claw and the fastening projection above a predetermined value. When the tensile force is applied to the optical cord, the tensile strength can withstand the breaking strength of the elastic locking piece, so that the fastening strength between the adapter and the plug is improved.
第１図は本発明の一実施例を説明するための光コネクタ
要部の拡大正面図、第２図は従来の光コネクタの一部切
欠き斜視図、第３図は本発明の他の実施例を示す第１図
と同様の図である。 １……アダプタ、２……ハウジング、2a……支持部、３
……弾性係止片、４……弾性片、4a……中心軸、５……
挿抜用突起、６……係止爪、6a……係止用側面、７……
整列スリーブ、８……プラグ、９……プラグフレーム、
10……ツマミ、11……光コード、12……フェルール、13
……締結用突起、13a……係止用側面、14……凹部、15,
16……斜面。FIG. 1 is an enlarged front view of an essential part of an optical connector for explaining an embodiment of the present invention, FIG. 2 is a partially cutaway perspective view of a conventional optical connector, and FIG. 3 is another embodiment of the present invention. It is a figure similar to FIG. 1 which shows an example. 1 ... Adapter, 2 ... Housing, 2a ... Support part, 3
...... Elastic locking piece, 4 ...... Elastic piece, 4a ...... Central axis, 5 ......
Insertion / extraction projection, 6 ... Locking claw, 6a ... Locking side surface, 7 ...
Alignment sleeve, 8 ... Plug, 9 ... Plug frame,
10 …… knob, 11 …… optical cord, 12 …… ferrule, 13
...... Fastening projections, 13a …… Locking side surfaces, 14 …… Recesses, 15,
16 …… Slope.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 岩佐 恭一 武蔵野市緑町３丁目９番11号 日本電信 電話株式会社電子機構技術研究所内 (72)発明者 長瀬 亮 武蔵野市緑町３丁目９番11号 日本電信 電話株式会社電子機構技術研究所内 (72)発明者 森本 芳隆 東京都港区芝５丁目33番１号 日本電気 株式会社内 (72)発明者 鈴木 紀夫 川崎市中原区上小田中1015番地 富士通 株式会社内 (72)発明者 小玉 敏郎 横浜市戸塚区戸塚町216番地 株式会社 日立製作所戸塚工場内 (56)参考文献 特開 昭59−126508（ＪＰ，Ａ) 実開 昭54−23654（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kyoichi Iwasa 3-9-11 Midoricho, Musashino City Nippon Telegraph and Telephone Corporation, Institute of Electronics and Mechanical Engineers (72) Inventor Ryo Nagase 3-9-11 Midoricho, Musashino City Japan (72) Inventor Yoshitaka Morimoto 5-33-1 Shiba, Minato-ku, Tokyo Within NEC Corporation (72) Inventor Norio Suzuki, 1515 Uedotaka, Nakahara-ku, Kawasaki City Fujitsu Limited (72) Inventor Toshiro Kodama 216 Totsuka-cho, Totsuka-ku, Yokohama-shi, Hitachi Ltd. Totsuka Plant (56) References JP 59-126508 (JP, A) Actual development 54-23654 (JP, U)
Claims (2)
性片の先端に係止爪と挿抜用突起とを形成してなる弾性
係止片を有するアダプタ並びに該アダプタに挿入され該
係止爪を係止する締結用突起を有するプラグフレーム
と、該プラグフレームの外面上に摺動可能に装着され後
退に際し該挿抜用突起を押し上げて該弾性係止片を開
き、該係止爪と該締結用突起との係止を解除するツマミ
とを有するプラグから構成された光コネクタにおいて、 該弾性片の中心軸と該係止爪が該締結用突起と接する点
との距離をＳとし、該弾性片の支持部と該係止爪が該締
結用突起と接する点との距離をｌとした場合、該係止爪
と該締結用突起との摩擦係数μを μ3S/2l を満足させるようにした ことを特徴とする光コネクタ。Claim: What is claimed is: 1. An adapter having an elastic locking piece having a locking claw and a projection for insertion / removal formed at a tip of an elastic piece supported in a cantilever shape in a housing, and the locking inserted into the adapter. A plug frame having a fastening projection for locking the claw, and a slidable mount on the outer surface of the plug frame, which pushes up the insertion / withdrawal projection when retracting to open the elastic locking piece, and the locking claw and the In an optical connector composed of a plug having a knob for releasing engagement with the fastening projection, a distance between a central axis of the elastic piece and a point at which the engaging claw is in contact with the fastening projection is S, and When the distance between the support portion of the elastic piece and the point at which the locking claw contacts the fastening projection is l, the friction coefficient μ between the locking claw and the fastening projection is set to satisfy μ3S / 2l. Optical connector characterized by
爪とのなす角を鋭角にしたことを特徴とする特許請求の
範囲第１項記載の光コネクタ。2. The optical connector according to claim 1, wherein an angle formed by the elastic piece and the locking claw in the elastic locking piece is an acute angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62071753A JP2567390B2 (en) | 1987-03-27 | 1987-03-27 | Optical connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62071753A JP2567390B2 (en) | 1987-03-27 | 1987-03-27 | Optical connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63239407A JPS63239407A (en) | 1988-10-05 |
| JP2567390B2 true JP2567390B2 (en) | 1996-12-25 |
Family
ID=13469608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62071753A Expired - Lifetime JP2567390B2 (en) | 1987-03-27 | 1987-03-27 | Optical connector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2567390B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5537501A (en) * | 1989-11-24 | 1996-07-16 | Nippon Telegraph And Telephone Corporation | Optical connector |
| US5673346A (en) * | 1989-11-24 | 1997-09-30 | Nippon Telegraph And Telephone Corporation | Optical jack for plug-jack optical connector |
| US5121454A (en) * | 1989-11-24 | 1992-06-09 | Nippon Telegraph And Telephone Corporation | Optical connector |
| US5528711A (en) * | 1989-11-24 | 1996-06-18 | Nippon Telegraph And Telephone Corp. | Optical connector for connecting a plurality of optical plugs to a connector housing |
| JPH0812309B2 (en) * | 1990-08-20 | 1996-02-07 | 日本電信電話株式会社 | Optical connector |
| JPH0517606U (en) * | 1991-08-14 | 1993-03-05 | 日本電信電話株式会社 | Optical connector plug structure |
| JP5041452B2 (en) | 2008-03-18 | 2012-10-03 | 古河電気工業株式会社 | Optical connector |
| JP5940379B2 (en) * | 2012-06-07 | 2016-06-29 | 三和電気工業株式会社 | Optical connector plug half-insertion prevention device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5757361Y2 (en) * | 1977-07-19 | 1982-12-09 | ||
| JPS59126508A (en) * | 1983-01-08 | 1984-07-21 | Sumitomo Electric Ind Ltd | Optical connector |
-
1987
- 1987-03-27 JP JP62071753A patent/JP2567390B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63239407A (en) | 1988-10-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (event date is renewal date of database) |
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