JPH0228427Y2 - - Google Patents
Info
- Publication number
- JPH0228427Y2 JPH0228427Y2 JP12939683U JP12939683U JPH0228427Y2 JP H0228427 Y2 JPH0228427 Y2 JP H0228427Y2 JP 12939683 U JP12939683 U JP 12939683U JP 12939683 U JP12939683 U JP 12939683U JP H0228427 Y2 JPH0228427 Y2 JP H0228427Y2
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- mandrel
- wound
- passage
- passages
- 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
Links
- 239000013307 optical fiber Substances 0.000 claims description 33
- 238000010586 diagram Methods 0.000 description 8
- 239000000835 fiber Substances 0.000 description 6
- 239000000758 substrate Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Testing Of Optical Devices Or Fibers (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
【考案の詳細な説明】
本考案は、主として光フアイバの曲げ試験用の
マンドレルに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention primarily relates to a mandrel for bending testing of optical fibers.
従来のマンドレルについて
「第１図」のマンドレル１０ａのように円柱形
のものを用い、その外側面に光フアイバ２０を巻
き付けるようにしている。３０は基板である。Regarding conventional mandrels, a cylindrical mandrel like the mandrel 10a shown in FIG. 1 is used, and an optical fiber 20 is wound around the outer surface of the mandrel. 30 is a substrate.
しかしこの方法では、１）自身の持つている復
元力によつて光フアイバ２０がゆるむ、２）測定
中に光フアイバが動く、３）光フアイバ２０をし
つかり固定するのがむずかしい、などの点で問題
があつた。 However, with this method, 1) the optical fiber 20 loosens due to its own restoring force, 2) the optical fiber moves during measurement, and 3) it is difficult to firmly fix the optical fiber 20. There was a problem.
考案の目的と要点
本考案の目的は、上記のような問題のない光フ
アイバ用マンドレルを提供することであつて「第
２図、第３図」のように、内面が円筒面を形成す
る中空の筒体からなる本体１２を持つマンドレル
１０を用いて、その内面１４に光フアイバ２０を
巻き付けるようにするとともに、本体１２の側壁
を貫通する通路１６，１８を設けて、その部分を
通して光フアイバ２０を出入れするようにしたも
のである。Purpose and main points of the invention The purpose of the invention is to provide an optical fiber mandrel that does not have the above-mentioned problems. An optical fiber 20 is wound around the inner surface 14 of the mandrel 10 having a main body 12 made of a cylindrical body, and passages 16 and 18 are provided to pass through the side walls of the main body 12 so that the optical fiber 20 can be wound through the mandrel 10. It was designed so that it could be taken in and out.
実施例
「第２図」において１０はマンドレルの全体、
１２はその本体である。これはたとえば内径が20
mm、肉厚が２mm、高さが20mmの円筒体で、材質は
鉄、真ちゆう、アルミなどの金属あるいは適当な
プラスチツクである。ただし必要なのは内面１４
で、それが円筒面をなしていれば、外側面は適当
な形状でもかまわない。Example In "Fig. 2", 10 is the entire mandrel,
12 is its main body. For example, the inner diameter is 20
It is a cylindrical body with a wall thickness of 2 mm and a height of 20 mm, and is made of metal such as iron, brass, aluminum, or a suitable plastic. However, what is required is the inner surface 14
As long as it has a cylindrical surface, the outer surface may have any suitable shape.
１６と１８は光フアイバ２０の通路で、これら
はたとえば次のように作つてある。すなわち「第
３図＊ａ」のように、内面１４の描く円筒面に任
意の位置Ａにおいて外接する仮想平面BACを考
え、通路１６と１８の１方の側面１６０と１８０
はその平面に沿うように設ける。そしてそれらに
平行にもう１方の側面１６２と１８２とを設け
る。したがつて通路１６と１８はみぞの形にな
る。その幅Ｗは、試験をする光フアイバ２０の太
さにより決まるが、フアイバコードの場合は３mm
くらいである。なおこれらの通路１６，１８は、
本体１２の上端面１３から基板３０に達するまで
の全長にわたつて設ける。 16 and 18 are passages for the optical fiber 20, which are made, for example, as follows. That is, as shown in "Fig. 3 *a", consider a virtual plane BAC that circumscribes the cylindrical surface drawn by the inner surface 14 at an arbitrary position A, and define side surfaces 160 and 180 of one side of the passages 16 and 18.
is placed along that plane. Another side surface 162 and 182 are provided parallel to these. Passages 16 and 18 are therefore groove-shaped. The width W is determined by the thickness of the optical fiber 20 to be tested, but in the case of a fiber cord it is 3 mm.
That's about it. Note that these passages 16 and 18 are
It is provided over the entire length from the upper end surface 13 of the main body 12 to the substrate 30.
「第３図ｂ」に光フアイバ２０を巻いた状態を
示す。 "Fig. 3b" shows the state in which the optical fiber 20 is wound.
光フアイバ２０は通路１６から入りＡにおいて
初めて内面１４に接し、所定のＮ回（Ｎは正の整
数でたとえば２〜５回）内面１４に巻かれ、また
Ａにおいて内面１４から離れて通路１８から外に
出る。したがつてこのマンドレル１０では光フア
イバ２０を正確にＮ回だけ巻くことができる。 The optical fiber 20 enters from the passage 16 and contacts the inner surface 14 for the first time at A, is wound around the inner surface 14 a predetermined N times (N is a positive integer, for example, 2 to 5 times), and leaves the inner surface 14 at A and exits from the passage 18. I go outside. Therefore, with this mandrel 10, the optical fiber 20 can be wound exactly N times.
光フアイバ２０は自身の弾性で外側に広がろう
とするから、特別に固定のための処置をとらなく
ても、ずり落ちたりはずれたりしない。 Since the optical fiber 20 tends to spread outward due to its own elasticity, it will not slip down or come off even if no special fixing measures are taken.
なお本体１２の内径は数〜数百mm程度にするこ
とができる。 Note that the inner diameter of the main body 12 can be approximately several to several hundred mm.
その他の実施例
(1) 第４図の場合
同図ａのように通路１６と１８とを平行に設け
る。すなわち、通路１６の１方の側面１６０は、
内面１４の円筒面に外接する仮想平面A1Bに沿つ
て設け、通路１８のもう１方の側面１８０はA1
と180離れた位置のA2において内面１４に外接す
る仮想平面A2Cに沿うように設ける。Other embodiments (1) In the case of Fig. 4 As shown in Fig. 4, passages 16 and 18 are provided in parallel. That is, one side 160 of the passage 16 is
The other side surface 180 of the passage 18 is provided along an imaginary plane A 1 B circumscribing the cylindrical surface of the inner surface 14, and the other side surface 180 of the passage 18 is A 1
It is provided along the imaginary plane A 2 C circumscribing the inner surface 14 at a position A 2 180 apart from .
光フアイバ２０を巻いた状態を同図ｂに示す。
通路１６から入つた光フアイバ２０はA1におい
て初めて内面１４に接し、Ｎ回巻かれた後A2に
おいて内面１４から離れて通路１８を通つて外に
出る。 Figure b shows the state in which the optical fiber 20 is wound.
The optical fiber 20 entering from the passage 16 comes into contact with the inner surface 14 for the first time at A 1 , and after being wound N times, leaves the inner surface 14 at A 2 and exits through the passage 18 .
したがつてこのマンドレル１０を使うと、光フ
アイバ２０を（Ｎ＋１／２）回だけ巻くことがで
きる。 Therefore, using this mandrel 10, the optical fiber 20 can be wound only (N+1/2) times.
(2) 第５図の場合
同図ａのように通路１６と１８とが90゜の角度
をなすようにする。(2) In the case of Fig. 5 As shown in Fig. 5, the passages 16 and 18 should form a 90° angle.
すなわち互いに90゜だけ離れたA1とA2において
内面１４の円筒面に外接する仮想平面A1BとA2C
を考え、それらに沿うように通路１６と１８の側
面１６０と１８０とを決める。 That is, virtual planes A 1B and A 2 C circumscribing the cylindrical surface of the inner surface 14 at A 1 and A 2 separated by 90° from each other.
The sides 160 and 180 of the passages 16 and 18 are determined along these lines.
同図ｂに光フアイバ２０を巻いた状態を示す。
この場合は光フアイバ２０を（Ｎ＋１／４）回だ
け巻くことができる。 Figure b shows the state in which the optical fiber 20 is wound.
In this case, the optical fiber 20 can be wound only (N+1/4) times.
(3) 第６図の場合
同図ａのように通路１６が１つになつている。
すなわち270゜だけ離れたA1とA2において内面１
４の円筒面に外接する仮想平面A1BおよびA2Cに
それぞれ沿うように、通路１６の側面１６０と１
６２とを設ける。(3) In the case of Fig. 6 The passage 16 is integrated into one as shown in Fig. 6 a.
That is, the inner surface 1 at A 1 and A 2 separated by 270°
The side surfaces 160 and 1 of the passage 16 are aligned along the virtual planes A 1 B and A 2 C circumscribing the cylindrical surface of the passage 16, respectively.
62 is provided.
同図ｂに光フアイバ２０を巻いた状態を示す。
この場合は光フアイバ２０を（Ｎ＋３／４）回だ
け巻くことができる。 Figure b shows the state in which the optical fiber 20 is wound.
In this case, the optical fiber 20 can be wound only (N+3/4) times.
(4) 第７図の場合
上記の第２、第３図のマンドレル１０と同じも
ので太さの違うマンドレル１０Ａ，１０Ｂを、同
軸上にならべたものである。なお外側のマンドレ
ル１０Ｂに設けた通路１７と１９は、内側のマン
ドレル１０Ａに光フアイバ２０を入れるためのも
のである。(4) In the case of FIG. 7 Mandrels 10A and 10B, which are the same as the mandrels 10 shown in FIGS. 2 and 3 above but have different thicknesses, are arranged coaxially. Note that the passages 17 and 19 provided in the outer mandrel 10B are for inserting the optical fiber 20 into the inner mandrel 10A.
光フアイバ２０を巻いた状態を同図ｂとｃに示
す。 Figures b and c show the state in which the optical fiber 20 is wound.
(5) 第８図、第９図の場合
基板３０上に固定治具３２を取付けて、光フア
イバ２０の直線部分に加わつた力が曲げ部分にお
よばないようにしたものである。なおこの場合は
第９図（第８図の−断面を示し、フアイバ２
０は省略）に示すように、通路１６，１８の下端
および本体１２の底面１５の高さを、固定治具３
２におけるフアイバ押え面３３と同じ高さにして
いる。(5) In the case of FIGS. 8 and 9 A fixing jig 32 is mounted on the substrate 30 to prevent the force applied to the straight portion of the optical fiber 20 from reaching the bent portion. In this case, Figure 9 (- cross section of Figure 8 is shown, and the fiber 2
0 is omitted), the heights of the lower ends of the passages 16 and 18 and the bottom surface 15 of the main body 12 are adjusted using the fixing jig 3.
The height is the same as that of the fiber pressing surface 33 in No. 2.
第１０図に各種の固定治具３２を示した。 FIG. 10 shows various fixing jigs 32.
ａは台３４にフツク状のフアイバ押え３６を取
付けたもの、ｂは台３４上にフアイバ押え３６を
ヒンジ３８し、それをバネ４０によつて付勢する
もの、ｃは台３４にＶみぞ４２を設けるとともに
フアイバ押え３６をネジ４４で締めるもの、ｄは
磁石４６を使うものである。 A is a case in which a hook-shaped fiber presser 36 is attached to a stand 34, b is a case in which the fiber presser 36 is hinged 38 on the stand 34 and is biased by a spring 40, and c is a case in which a V groove 42 is attached to the stand 34. is provided and the fiber presser 36 is tightened with a screw 44, and d uses a magnet 46.
考案の効果
(1) マンドレル１０の円筒面をなす内面１４に光
ハアイバ２０を巻き付けるので、上記のように
光フアイバ２０は自身の持つている外側に広が
ろうとする力によつて内面１４に密着してはず
れない。したがつて光ハアイバ２０をマンドレ
ル１０に固定するために特別の処置をする必要
がない。Effects of the invention (1) Since the optical fiber 20 is wound around the inner surface 14 of the mandrel 10, which is a cylindrical surface, the optical fiber 20 is tightly attached to the inner surface 14 due to its own force of spreading outward, as described above. I can't do it. Therefore, there is no need to take any special measures to fix the optical fiber 20 to the mandrel 10.
(2) 本体１２の側壁に光フアイバ２０の貫通する
通路１６を設けているので、光フアイバ２０は
マンドレル１０の内面に接するまでまつたく曲
げを受けずに入り、また曲げを受けずに出るこ
とができる。(2) Since the passage 16 through which the optical fiber 20 passes is provided in the side wall of the main body 12, the optical fiber 20 can enter the mandrel 10 without being bent until it comes into contact with the inner surface of the mandrel 10, and can come out without being bent. Can be done.
(3) 上記のように通路１６などの位置の決め方に
より、きわめて正確にＮ回、（Ｎ＋１／２）回
などの所定の回数だけ巻くことができる。(3) By determining the positions of the passages 16 and the like as described above, it is possible to wind the coil a predetermined number of times, such as N times or (N+1/2) times, with great accuracy.
第１図は従来技術の説明図、第２図は本考案の
実施例の説明図、第３図ａは通路１６，１８の決
め方の説明図で、ｂは光フアイバ２０を巻いた状
態の説明図、第４図、第５図、第６図の各ａはそ
の他の実施例における通路１６，１８の決め方の
説明図で、各ｂはそれぞれの場合における光フア
イバ２０を巻いた状態の説明図、第７図はマンド
レル１０を２重にした場合の説明図、第８図は固
定治具３２を用いる場合の説明図で、その−
断面を第９図に示す。第１０図のａ，ｂ，ｃ，ｄ
は各種の固定治具３２の説明図。
１０……マンドレル、１２……本体、１４……
内面、１６，１８……通路、２０……光フアイ
バ、３０……基板。
FIG. 1 is an explanatory diagram of the prior art, FIG. 2 is an explanatory diagram of an embodiment of the present invention, FIG. 3 a is an explanatory diagram of how to determine the passages 16 and 18, and FIG. 4, 5, and 6 are explanatory diagrams of how to determine the passages 16 and 18 in other embodiments, and each b is an explanatory diagram of the state in which the optical fiber 20 is wound in each case. , FIG. 7 is an explanatory diagram when the mandrel 10 is doubled, and FIG. 8 is an explanatory diagram when the fixing jig 32 is used.
A cross section is shown in FIG. a, b, c, d in Figure 10
FIG. 3 is an explanatory diagram of various fixing jigs 32. 10...Mandrel, 12...Main body, 14...
Inner surface, 16, 18... passage, 20... optical fiber, 30... substrate.
Claims (1)
に、側壁を貫通する光フアイバの通路を設けたこ
と、を特徴とする光フアイバ用マンドレル。 A mandrel for an optical fiber, characterized in that the main body is a hollow cylinder whose inner surface is a cylindrical surface, and a passage for the optical fiber is provided through the side wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12939683U JPS6037848U (en) | 1983-08-22 | 1983-08-22 | Mandrel for optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12939683U JPS6037848U (en) | 1983-08-22 | 1983-08-22 | Mandrel for optical fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6037848U JPS6037848U (en) | 1985-03-15 |
| JPH0228427Y2 true JPH0228427Y2 (en) | 1990-07-31 |
Family
ID=30293202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12939683U Granted JPS6037848U (en) | 1983-08-22 | 1983-08-22 | Mandrel for optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6037848U (en) |
-
1983
- 1983-08-22 JP JP12939683U patent/JPS6037848U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6037848U (en) | 1985-03-15 |
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