JP2003121695A - Optical fixed attenuator - Google Patents

Optical fixed attenuator

Info

Publication number
JP2003121695A
JP2003121695A JP2001314816A JP2001314816A JP2003121695A JP 2003121695 A JP2003121695 A JP 2003121695A JP 2001314816 A JP2001314816 A JP 2001314816A JP 2001314816 A JP2001314816 A JP 2001314816A JP 2003121695 A JP2003121695 A JP 2003121695A
Authority
JP
Japan
Prior art keywords
optical
attenuator
adapter
fixed
optical fixed
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.)
Pending
Application number
JP2001314816A
Other languages
Japanese (ja)
Inventor
Kosuke Hioki
康祐 日置
Tatsuto Shinozaki
達人 篠崎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanwa Denki Kogyo Co Ltd
Original Assignee
Sanwa Denki Kogyo Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sanwa Denki Kogyo Co Ltd filed Critical Sanwa Denki Kogyo Co Ltd
Priority to JP2001314816A priority Critical patent/JP2003121695A/en
Publication of JP2003121695A publication Critical patent/JP2003121695A/en
Pending legal-status Critical Current

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  • Light Guides In General And Applications Therefor (AREA)
  • Mechanical Coupling Of Light Guides (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide an optical fixed attenuator which can be inserted into a multicore adapter together with another optical fixed attenuator at the same time, facilitates plug insertion, and can be made small-sized and lightweight. SOLUTION: A lower wall of a quadrilaterally cross-sectioned prismatic casing 8 constituting a plug coupling part 7 of one of the optical fixed attenuators which have adapter coupling parts 6 and 9, matching an upper connection opening 4 and a lower connection opening 5 of an adapter 3, formed at one-end sides and plug coupling parts 7 and 10 formed at the other-end sides is cut and an upper wall 12 of a quadrilaterally cross-sectioned prismatic casing 11 constituting a plug coupling part 10 of the other optical fixed attenuator 2 is made thin and has its center part cut along the length; and guide plates 14 and 14 are projected opposite on both the sides of the cut part 13 and the lower wall and upper wall 12 are made to abut against each other and fixed in one body.

Description

【発明の詳細な説明】 【０００１】 【発明の属する技術分野】本発明は、一端をプラグ結合
部に、他端はアダプタ結合部に各形成されている光固定
減衰器に関する。 【０００２】 【従来の技術】従来の光固定減衰器ａは、図１６及び図
１７に示したように、一端をアダプタｂの結合部ｃに、
他端は図示しないプラグの結合部ｄに各形成されてい
る。上記プラグ結合部ｄは、アダプタ結合部ｃに比べて
大きく形成されている。そして、プラグ結合部ｄの外形
は、横断面四角筒状のケーシングｅで形成されている。 【０００３】一方、光固定減衰器用のアダプタｂは、そ
の用途が多芯用（二芯、四芯等）の場合、光固定減衰器
ａには二芯単位毎のプラグ挿入孔ｆ、ｆが互に連通状態
にて形成され、これら挿入孔ｆ、ｆには、二個のプラグ
（図示せず）が差し込まれる。 【０００４】 【発明が解決しようとする課題】しかし乍ら、上記した
従来の光固定減衰器ａは、アダプタｂの二個の差込口
ｇ、ｇに差し込んで接続しようとすると、図１７に示し
たように、両光固定減衰器ａ、ａのプラグ結合部ｄ、ｄ
を形成するケーシングｅ、ｅの対向部分が邪魔になっ
て、互いに重なり合う部分ｈができてしまい、二個同時
に差し込むことができない。かくして、このようなアダ
プタｂに対応する光固定減衰器の開発が当該業者間で希
求されている。 【０００５】 【目的】本発明は、上記した従来の光固定減衰器が有す
るこのような問題点に鑑みてなされたもので、アダプタ
の上部接続口と、下部接続口に各整合する形状とした一
方の光固定減衰器のケーシング下壁を切欠し、他方の光
固定減衰器のケーシング上壁を薄肉に、かつ中央部を長
手方向へ切欠して、両側に案内板を対向突設して形成
し、これら下壁と上壁とを突き合わせて一体に構成した
ことにより、アダプタに対して二個同時に差し込むこと
ができると共に、プラグ結合部が、案内板によって上下
に区分されることでプラグ挿入が容易であり、また、ケ
ーシング上壁が薄肉で、かつ両ケーシングの下壁、上壁
が切欠されていることで、小型、軽量化できる光固定減
衰器を提供することを目的とする。 【０００６】 【課題を解決するための手段】上記目的を達成するため
に、本発明に係る光固定減衰器は、アダプタの上部接続
口及び下部接続口に各整合するアダプタ結合部を一端
に、プラグ結合部を他端に各形成した一方の光固定減衰
器のプラグ結合部を構成する横断面四角筒状のケーシン
グ下壁を切欠形成し、他方の光固定減衰器のプラグ結合
部を構成する横断面四角筒状のケーシング上壁を薄肉に
して、かつ中央部を長手方向へ切欠し、その切欠部の両
側に案内板を対向突設し、前記下壁、上壁を互いに突き
合わせて一体に固定して構成したことを特徴とする。 【０００７】 【発明の実施の形態】以下、本発明に係る光固定減衰器
の実施の形態について図面を参照して説明する。図１
は、アダプタに、上部、下部両光固定減衰器を差し込ん
だ状態の端面図を示し、図２は、上部光固定減衰器の側
面図を示し、図３は、上部光固定減衰器の正面図を示
し、図４は、図２におけるＡ−Ａ線矢視断面図を示し、
図５は、図３におけるＢ−Ｂ線矢視断面図を示し、図６
は、図３におけるＣ−Ｃ線矢視断面図を示し、図７は、
下部光固定減衰器の側面図を示し、図８は、下部光固定
減衰器の正面図を示し、図９は、図７におけるＤ−Ｄ線
矢視断面図を示し、図１０は、図８におけるＥ−Ｅ線矢
視断面図を示し、図１１は、図８におけるＦ−Ｆ線矢視
断面図を示し、図１２（Ａ）は、上部光固定減衰器の斜
視図を示し、（Ｂ）は、下部光固定減衰器の斜視図を示
し、図１３は、上部、下部両光固定減衰器を合体した状
態の斜視図を示し、図１４は、アダプタと、上部、下部
両光固定減衰器と、プラグの斜視図を示し、図１５は、
アダプタと、二個一対の光固定減衰器と、二個一対のプ
ラグを各差し込んだ状態の斜視図を示し、図１６は、従
来のアダプタと、光固定減衰器の正面図を示し、図１７
は、従来のアダプタと光固定減衰器を接続する際の説明
図を示す。 【０００８】本発明の二芯単位の光固定減衰器は、上部
光固定減衰器１と、下部光固定減衰器２とで構成され
る。上記上部光固定減衰器１は、次のように構成され
る。図１及び図２ないし図６並びに図１２（Ａ）、図１
３ないし図１５に示したように、一端をアダプタ３の上
部接続口４に対応して整合されるアダプタ結合部６に、
他端はプラグ結合部７に各形成されている。 【０００９】上記プラグ結合部７は、上記アダプタ結合
部６と比べて大きく、かつプラグ１５を挿入できる内部
形状に形成されていると共に、該プラグ結合部７の外壁
は、横断面四角筒状のケーシング８で形成されている。
そして、上部光固定減衰器１におけるケーシング８の下
壁は切欠して、下向きに開口する開口部８ａを形成させ
てある。 【００１０】上記下部光固定減衰器２は、次のように構
成される。上記した上部光固定減衰器１と同様、図１、
図７ないし図１１並びに図１２（Ｂ）、図１３ないし図
１５に示したように、一端をアダプタ３の下部接続口５
に対応して整合されるアダプタ結合部９に、他端はプラ
グ結合部１０に各形成されている。 【００１１】上記プラグ結合部１０は、アダプタ結合部
９と比べて大きく、かつプラグ１５を挿入できる内部形
状に形成されていると共に、該プラグ結合部１０の外壁
は、横断面四角筒状のケーシング１１で形成されてい
る。そして、下部光固定減衰器２におけるケーシング１
１の上壁１２を薄肉に形成して、その中央部を長手方向
へ切欠し、この切欠部１３の長手方向と直角方向の両側
に狭幅の案内板１４、１４を対向突設して形成されてい
る。 【００１２】上記したように形成した上部、下部両光固
定減衰器１と２は、次のように組み立てることで、二芯
単位毎のアダプタ３に対応する光固定減衰器が構成され
る。図４ないし図６及び図９ないし図１１に示したよう
に、上部、下部両光固定減衰器１、２内に、横断面四角
筒状にして、内面に、図１４に示すプラグ１５、１５を
挿入保持する二個一対の係止爪１６、１６を対向突設
し、中心に貫通形成した嵌合孔１７に、割スリーブ１８
を介在してフェルール１９を嵌合固定した内部ハウジン
グ２０を、プラグ結合部７、１０側から嵌合し、上部、
下部両光固定減衰器１、２におけるケーシング８、１１
から、各アダプタ結合部６、９側へ突設したケーシング
８、１１の四角筒状部２１に外部ハウジング２２を外装
固定する。 【００１３】次いで、図１３に示したように、上部光固
定減衰器１の下壁と、下部光固定減衰器２の上壁１２と
を突き合わせ、ビスや接着材等の公知の固定手段によっ
て、上部、下部両光固定減衰器１、２を組み合せて一体
に固定することで二芯単位の光固定減衰器Ａは構成され
る。このようにして、上部光固定減衰器１の開口部８ａ
と、下部光固定減衰器２の切欠部１３によって、図１３
に示したように二芯単位毎のプラグ挿入孔１ａ、２ａ
が、互いに連通した状態に形成される。 【００１４】 【発明の効果】本発明は、以上説明したように構成され
ているので、一方（上部）の光固定減衰器の下壁を切欠
開口し、他方（下部）の光固定減衰器の上壁を薄肉にし
て、かつ中央部を長手方向へ切欠したので、両光固定減
衰器のプラグ結合部の外壁を形成するケーシングの対向
部分が邪魔になることはないからアダプタに対して、従
来のように一個おきにではなく、二個同時に差し込むこ
とができると共に、中央両側に突設した案内板によっ
て、上部、下部両プラグ挿入孔を区分けできるので、プ
ラグ挿入がきわめて容易となる。 【００１５】さらに、一方の光固定減衰器のケーシング
下壁を切欠し、他方の光固定減衰器のケーシング上壁を
薄肉にして、かつ中央部を長手方向へ切欠したので、全
体を小型、軽量化できる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixed optical attenuator having one end formed on a plug connecting portion and the other end formed on an adapter connecting portion. 2. Description of the Related Art As shown in FIGS. 16 and 17, a conventional optical fixed attenuator a has one end connected to a coupling portion c of an adapter b.
The other end is formed at a coupling portion d of a plug (not shown). The plug coupling part d is formed larger than the adapter coupling part c. The outer shape of the plug connection portion d is formed by a casing e having a rectangular cross section. On the other hand, when the adapter b for the optical fixed attenuator is used for multiple cores (two-core, four-core, etc.), the optical fixed attenuator a has plug insertion holes f, f for each two-core unit. Two plugs (not shown) are inserted into these insertion holes f, f. [0004] However, when the conventional optical fixed attenuator a described above is plugged into the two insertion ports g, g of the adapter b and connected, FIG. As shown, the plug coupling portions d, d of the two optical fixed attenuators a, a
Of the casings e and e forming an obstacle hinder each other, resulting in a part h overlapping each other, and two casings cannot be inserted at the same time. Thus, the development of an optical fixed attenuator corresponding to such an adapter b is desired by those skilled in the art. SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the above-described conventional optical fixed attenuator, and has a shape matching each of an upper connection port and a lower connection port of an adapter. The lower wall of the casing of one optical fixed attenuator is cut out, the upper wall of the casing of the other optical fixed attenuator is made thin, and the center is cut out in the longitudinal direction. However, since the lower wall and the upper wall are abutted and integrally formed, two adapters can be simultaneously inserted into the adapter, and the plug insertion portion is divided into upper and lower portions by the guide plate, so that the plug can be inserted. An object of the present invention is to provide an optical fixed attenuator that is easy and can be reduced in size and weight because the upper wall of the casing is thin and the lower and upper walls of both casings are notched. In order to achieve the above object, an optical fixed attenuator according to the present invention has an adapter coupling portion at one end which is aligned with an upper connection port and a lower connection port of an adapter. The lower end of the casing having a rectangular cross-section having a rectangular cross section that forms the plug coupling portion of one optical fixed attenuator having the plug coupling portion formed at the other end is formed, and the plug coupling portion of the other optical fixed attenuator is configured. The upper wall of the casing having a rectangular cross section is made thinner, and the central portion is cut out in the longitudinal direction, and guide plates are provided on both sides of the cutout so as to face each other. It is characterized by being fixed. An embodiment of an optical fixed attenuator according to the present invention will be described below with reference to the drawings. FIG.
Shows an end view of a state where both upper and lower optical fixed attenuators are inserted into an adapter, FIG. 2 shows a side view of the upper optical fixed attenuator, and FIG. 3 shows a front view of the upper optical fixed attenuator. 4 is a cross-sectional view taken along line AA in FIG.
FIG. 5 is a sectional view taken along line BB in FIG. 3, and FIG.
Shows a cross-sectional view taken along line CC in FIG. 3, and FIG.
8 shows a side view of the lower optical fixed attenuator, FIG. 8 shows a front view of the lower optical fixed attenuator, FIG. 9 shows a cross-sectional view taken along the line DD in FIG. 7, and FIG. 11 is a sectional view taken along line EE in FIG. 8, FIG. 11 is a sectional view taken along line FF in FIG. 8, FIG. 12 (A) is a perspective view of the upper fixed optical attenuator, and FIG. ) Shows a perspective view of the lower optical fixed attenuator, FIG. 13 shows a perspective view of a state where the upper and lower optical fixed attenuators are combined, and FIG. 14 shows an adapter and upper and lower optical fixed attenuators. FIG. 15 shows a perspective view of a container and a plug, and FIG.
FIG. 16 is a perspective view showing an adapter, two pairs of optical fixed attenuators, and two pairs of plugs inserted therein. FIG. 16 is a front view of the conventional adapter and the optical fixed attenuator.
Fig. 2 shows an explanatory diagram when a conventional adapter and an optical fixed attenuator are connected. The two-core fixed optical attenuator of the present invention comprises an upper fixed optical attenuator 1 and a lower fixed optical attenuator 2. The upper fixed optical attenuator 1 is configured as follows. 1 and FIGS. 2 to 6 and FIGS.
As shown in FIGS. 3 to 15, one end of the adapter coupling portion 6 is aligned with the upper connection port 4 of the adapter 3.
The other end is formed on each of the plug coupling portions 7. The plug connecting portion 7 is larger than the adapter connecting portion 6 and is formed in an internal shape into which the plug 15 can be inserted, and the outer wall of the plug connecting portion 7 has a rectangular cross section in a rectangular cross section. The casing 8 is formed.
The lower wall of the casing 8 in the upper fixed optical attenuator 1 is notched to form an opening 8a that opens downward. The lower optical fixed attenuator 2 is configured as follows. As with the upper fixed optical attenuator 1 described above, FIG.
As shown in FIG. 7 to FIG. 11, FIG. 12 (B), and FIG. 13 to FIG.
The other end is formed on the adapter connecting part 9 and the other end is formed on the plug connecting part 10, respectively. The plug connecting portion 10 is larger than the adapter connecting portion 9 and is formed to have an internal shape into which the plug 15 can be inserted, and the outer wall of the plug connecting portion 10 has a casing having a quadrangular cylindrical cross section. 11. Then, the casing 1 in the lower optical fixed attenuator 2
The upper wall 12 is formed to be thin, the center portion thereof is cut out in the longitudinal direction, and narrow guide plates 14, 14 are formed on opposite sides of the notch portion 13 in the direction perpendicular to the longitudinal direction so as to face each other. Have been. The upper and lower optical fixed attenuators 1 and 2 formed as described above are assembled as follows to form an optical fixed attenuator corresponding to the adapter 3 for each two-core unit. As shown in FIGS. 4 to 6 and FIGS. 9 to 11, the upper and lower fixed optical attenuators 1 and 2 each have a rectangular tubular cross section, and the inner surfaces thereof have plugs 15 and 15 shown in FIG. A pair of locking claws 16, 16 for inserting and holding the same are provided so as to face each other, and a split sleeve 18 is inserted into a fitting hole 17 formed through the center.
The inner housing 20 in which the ferrule 19 is fitted and fixed with the interposition therebetween is fitted from the plug coupling parts 7 and 10 side,
Casings 8, 11 in lower two-light fixed attenuators 1, 2
Then, the outer housing 22 is externally fixed to the square tubular portions 21 of the casings 8 and 11 projecting toward the respective adapter coupling portions 6 and 9. Next, as shown in FIG. 13, the lower wall of the upper fixed optical attenuator 1 and the upper wall 12 of the lower fixed optical attenuator 2 are abutted, and are fixed by a known fixing means such as a screw or an adhesive. The fixed optical attenuator A of two cores is constituted by combining the upper and lower optical fixed attenuators 1 and 2 and fixing them integrally. Thus, the opening 8a of the upper fixed optical attenuator 1
13 and the notch 13 of the lower optical fixed attenuator 2
As shown in the figure, the plug insertion holes 1a, 2a
Are formed so as to communicate with each other. Since the present invention is constructed as described above, the lower wall of one (upper) optical fixed attenuator is cut open, and the other (lower) optical fixed attenuator is opened. Since the upper wall is made thinner and the center part is cut out in the longitudinal direction, the opposed part of the casing forming the outer wall of the plug connection part of both optical fixed attenuators does not become an obstacle. It is possible to insert two plugs at the same time instead of every other plug, and to separate the upper and lower plug insertion holes by the guide plates protruding on both sides of the center, so that the plug insertion becomes very easy. Further, the lower wall of the casing of one of the optical fixed attenuators is cut out, the upper wall of the casing of the other optical fixed attenuator is made thinner, and the central portion is cut out in the longitudinal direction. Can be

【図面の簡単な説明】 【図１】本発明に係る光固定減衰器の実施の形態におい
て、アダプタに光固定減衰器を差し込んだ状態を、その
プラグ結合部側から見た端面図である。 【図２】同上光固定減衰器における上部光固定減衰器を
示す側面図である。 【図３】同上上部光固定減衰器を示す正面図である。 【図４】図２におけるＡ−Ａ線矢視断面図である。 【図５】図３におけるＢ−Ｂ線矢視断面図である。 【図６】図３におけるＣ−Ｃ線矢視断面図である。 【図７】同上光固定減衰器における下部光固定減衰器を
示す側面図である。 【図８】同上下部光固定減衰器を示す正面図である。 【図９】図７におけるＤ−Ｄ線矢視断面図である。 【図１０】図８におけるＥ−Ｅ線矢視断面図である。 【図１１】図８におけるＦ−Ｆ線矢視断面図である。 【図１２】（Ａ）、（Ｂ）（Ａ）は上部光固定減衰器を
示す斜視図である。（Ｂ）は下部光固定減衰器を示す斜
視図である。 【図１３】上部、下部両光固定減衰器を合体して形成し
た光固定減衰器を示す斜視図である。 【図１４】アダプタと、光固定減衰器と、プラグの差し
込み前の状態を示す各斜視図である。 【図１５】アダプタと、光固定減衰器と、プラグを差し
込んだ状態を示す斜視図である。 【図１６】従来のアダプタと、二芯単位の光固定減衰器
を示す各正面図である。 【図１７】従来の二芯用アダプタと、二芯単位の光固定
減衰器とを差し込み接続する際の説明図である。 【符号の説明】 １ 一方（上部）の光固定減衰器 ２ 他方（下部）の光固定減衰器 ３ 二芯用アダプタ ４、５ アダプタの両光固定減衰器の接続口 ６、９ アダプタ結合部 ７、１０ プラグ結合部 ８、１１ ケーシング １３ 切欠部 １４、１４ 案内板BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an end view of an embodiment of an optical fixed attenuator according to the present invention, in a state where an optical fixed attenuator is inserted into an adapter, as viewed from a plug coupling portion side. FIG. 2 is a side view showing an upper fixed optical attenuator in the same fixed optical attenuator. FIG. 3 is a front view showing the same upper optical fixed attenuator. FIG. 4 is a sectional view taken along line AA in FIG. 2; FIG. 5 is a sectional view taken along line BB in FIG. 3; 6 is a sectional view taken along line CC in FIG. 3; FIG. 7 is a side view showing a lower fixed optical attenuator in the same fixed optical attenuator. FIG. 8 is a front view showing the upper and lower optical fixed attenuators. FIG. 9 is a sectional view taken along line DD in FIG. 7; FIG. 10 is a sectional view taken along line EE in FIG. 8; 11 is a sectional view taken along line FF in FIG. 8; FIGS. 12A, 12B and 12A are perspective views showing an upper fixed optical attenuator. (B) is a perspective view showing a lower optical fixed attenuator. FIG. 13 is a perspective view showing an optical fixed attenuator formed by combining upper and lower optical fixed attenuators. FIG. 14 is a perspective view showing a state before an adapter, an optical fixed attenuator, and a plug are inserted. FIG. 15 is a perspective view showing a state where an adapter, an optical fixed attenuator, and a plug are inserted. FIG. 16 is a front view showing a conventional adapter and an optical fixed attenuator in units of two cores. FIG. 17 is an explanatory diagram when a conventional two-core adapter and a two-core unit optical fixed attenuator are inserted and connected. [Description of Signs] 1 One (upper) optical fixed attenuator 2 The other (lower) optical fixed attenuator 3 Two-core adapters 4, 5 Connection ports 6, 9 for both optical fixed attenuators of adapter Adapter coupling part 7 , 10 plug connection part 8, 11 casing 13 notch part 14, 14 guide plate

Claims (1)

【特許請求の範囲】 【請求項１】アダプタの上部接続口及び下部接続口に各
整合するアダプタ結合部を一端に、プラグ結合部を他端
に各形成した一方の光固定減衰器のプラグ結合部を構成
する横断面四角筒状のケーシング下壁を切欠形成し、他
方の光固定減衰器のプラグ結合部を構成する横断面四角
筒状のケーシング上壁を薄肉にして、かつ中央部を長手
方向へ切欠し、その切欠部の両側に案内板を対向突設
し、前記下壁、上壁を互いに突き合わせて一体に固定し
て構成したことを特徴とする光固定減衰器。Claims: 1. An optical fixed attenuator having one adapter fixed portion formed at one end and an adapter connected portion matching with an upper connection port and a lower connection port of an adapter. The lower wall of the casing having a rectangular cross section that forms a part is cut out, the upper wall of the casing that has a rectangular cross section that forms a plug coupling part of the other optical fixed attenuator is made thinner, and the central part is elongated. A light fixed attenuator comprising a notch in a direction, a guide plate protruding on both sides of the notch, and the lower wall and the upper wall abutting each other and integrally fixed.
JP2001314816A 2001-10-12 2001-10-12 Optical fixed attenuator Pending JP2003121695A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001314816A JP2003121695A (en) 2001-10-12 2001-10-12 Optical fixed attenuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001314816A JP2003121695A (en) 2001-10-12 2001-10-12 Optical fixed attenuator

Publications (1)

Publication Number Publication Date
JP2003121695A true JP2003121695A (en) 2003-04-23

Family

ID=19133070

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001314816A Pending JP2003121695A (en) 2001-10-12 2001-10-12 Optical fixed attenuator

Country Status (1)

Country Link
JP (1) JP2003121695A (en)

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