JPS6227709A - Optical fiber coupling device - Google Patents

Abstract

PURPOSE:To attach and detach an optical fiber with one touch by putting a pushing piece incorporating a ball in an internal screw hole orthogonal to a fitting hole and projecting a part of the spherical surface of the ball, which is projected from the front end of the pushing piece, to the inside peripheral surface of the fitting hole to engage this part with an annular groove of a cylindrical chip. CONSTITUTION:A metallic pushing piece 7 has an external screw on the outside peripheral surface, and an incorporated ball 9 is pushed by a coiled spring 8 and a part of its peripheral surface is projected from the front end of the pushing piece 7. The pushing piece 7 is forced into an internal screw hole 5 to project a part of its peripheral surface projected from the front end to the inside peripheral surface of a fitting hole 4. Though the ball 9 is first forced into the pushing piece against the spring 8 by the outside peripheral surface of the front end part of a cylindrical chip 3 when the cylindrical chip 3 is inserted to the fitting hole 4, the ball 9 is pushed by the spring 9 and is put into an annular groove 2 when the annular groove 2 reaches the position of the ball 2, and the cylindrical chip is prevented from slipping then to couple or fix an optical fiber 1. In case that the optical fiber 1 is detached, a slight force is applied to pull the optical fiber reverse.

Description

【発明の詳細な説明】 （産業上の利用分野） この発明はプラスチック製品成形用金型に取付け、金型
を開いても一部の成形品（製品やランナ〕が付着、残存
している場合にこれを検出し、次の型締めを中止し且つ
残存成形品の除去を警告する光電式の金型監視装置その
他で、光ファイバーの端部を着脱可能に連結したり、二
本の光ファイバーの端部同志を対向して着脱可能に連結
する光ファイバーの連結装置。[Detailed description of the invention] (Industrial application field) This invention is installed in a mold for molding plastic products, and if some molded products (products or runners) adhere or remain even after the mold is opened. A photoelectric mold monitoring device or other device that detects this, stops the next mold clamping, and warns of the removal of the remaining molded product, can be used to removably connect the ends of optical fibers, or to connect the ends of two optical fibers. An optical fiber coupling device that connects two optical fibers facing each other in a removable manner.

（従来の技術〕 上述の様な光電式の金型監視装置を本出願人は特願昭６
０−一＆／Ａ７号で提案した。これでは第３図に示す様
に光ファイバー／の端部に、外周に環状溝二を有する筒
形チップ３を嵌着し、上記筒形チップが嵌合するホルダ
などの嵌合孔ダには雌ねじ孔５を直交して開設し、この
雌ねじ孔に押ねじ６χ螺装し、嵌合孔に挿入した筒形チ
ップの環状溝−に押ねじ６の先端？突入させて光ファイ
バーが嵌合孔から抜けるのを防止している。(Prior art) The applicant has filed a patent application for the photoelectric mold monitoring device as described above in 1983.
It was proposed in issue 0-1 &/A7. In this case, as shown in Fig. 3, a cylindrical tip 3 having an annular groove 2 on the outer periphery is fitted to the end of the optical fiber, and the fitting hole of the holder, etc. into which the cylindrical tip fits is fitted with a female thread. The holes 5 are opened perpendicularly to each other, a set screw 6x is screwed into this female threaded hole, and the tip of the set screw 6 is inserted into the annular groove of the cylindrical tip inserted into the fitting hole. This prevents the optical fiber from coming out of the fitting hole.

（発明が解決しようとする問題点） 上記従来装置によれば筒形チップＺ嵌合孔に差込み、そ
ｎから押ねじを回してその先端を筒形チップ外周の環状
溝に突入させて連結し、又、筒形チップを嵌合孔から抜
く際は押ねじを逆に回し押ねじの先端部を環状溝から脱
出させることが必要で、押ねじを回すのに手数がか−る
。(Problems to be Solved by the Invention) According to the above-mentioned conventional device, the cylindrical tip is inserted into the Z fitting hole, and then the set screw is turned to push the tip into the annular groove on the outer periphery of the cylindrical tip to connect it. Furthermore, when removing the cylindrical tip from the fitting hole, it is necessary to turn the set screw in the opposite direction to make the tip of the set screw escape from the annular groove, which takes time and effort to turn the set screw.

（問題点を解決するための手段） そこで本発明はバネと、上記バネにより押されて球面の
一部が先端から突出するボールを内蔵した押圧子乞嵌合
孔に直交した雌ねじ孔に螺装し、上記押圧子の先端から
突出するボールの球面の一部を嵌合孔の内周に突出させ
て筒形チップの環状溝に係合させることを特徴とする。(Means for Solving the Problems) Therefore, the present invention provides a pusher which has a spring and a ball inside which is pushed by the spring and has a part of its spherical surface protruding from its tip. The present invention is characterized in that a part of the spherical surface of the ball protruding from the tip of the presser protrudes to the inner periphery of the fitting hole and engages with the annular groove of the cylindrical tip.

（作　用） 本発明によれば低合孔に筒形チップを差込むと筒形チッ
プの先端で押されてボールはバネに抗し押圧子内に一旦
引込み、筒形チップの環状溝がボールの位置に到達する
とボールはバネで押さｎ″′Ｃ環状溝内に突入する。(Function) According to the present invention, when the cylindrical tip is inserted into the low mating hole, the ball is pushed by the tip of the cylindrical tip and is temporarily pulled into the presser against the spring, and the annular groove of the cylindrical tip pushes against the ball. When the ball reaches the position n'''C, it is pushed by the spring and plunges into the annular groove.

（実施例） 筆１図は７本の光ファイバーの一端を着脱可能に連結す
る一実施例、第２図は２本の光ファイバーの各一端同志
を対向して着脱可能に連結する他の一実施例で、前述し
た従来例（第３図］と同一の要素には同じ符号を付しで
ある。(Example) Figure 1 shows an example in which one end of seven optical fibers are removably connected, and Figure 2 is another example in which the ends of two optical fibers are connected removably so that they face each other. The same elements as those in the conventional example (FIG. 3) described above are given the same reference numerals.

７は雌ねじ孔Ｓにねじ込む円形断面の金属製押圧子で、
外周に雄ねじを有し、先端から開設した盲孔７′中には
コイルバネｔと、ボールワを内蔵し、ボールタはコイル
バネざで押されて押圧子の先端から球面の一部が突出す
る。ボールｔが盲孔７′中から外に抜は出すのを防ぐた
め、コイルバネざ、ボー／Ｉ／９を盲孔７′に収容後、
盲孔の開口端部の直径をボールの直径よりも少し小さく
なる様に変形させろ。これにより押圧子の先端からのボ
ールデの突出量は半分よりも少し小である。7 is a metal presser with a circular cross section that is screwed into the female threaded hole S;
It has a male thread on its outer periphery, and a coil spring t and a bouler are built in a blind hole 7' opened from the tip, and the boulter is pushed by the coil spring lug so that a part of the spherical surface protrudes from the tip of the presser. In order to prevent the ball t from being pulled out from the blind hole 7', after storing the coil spring spring BO/I/9 in the blind hole 7',
Change the diameter of the open end of the blind hole to be slightly smaller than the diameter of the ball. As a result, the amount of protrusion of the bold from the tip of the presser is slightly smaller than half.

この押圧子７を雌ねじ孔３中にねじ込み、その先端から
突出するボール？の球面の一部を嵌合孔ダの内周に突出
させる。This presser 7 is screwed into the female screw hole 3, and a ball protrudes from its tip? A part of the spherical surface is made to protrude to the inner periphery of the fitting hole.

勿論、雌ねじ孔３は、筒形チップ３を嵌合孔ダに嵌合し
たとき筒形チップの環状溝コに対向する様に嵌合孔九対
し直交して開設しである。Of course, the female screw hole 3 is opened perpendicularly to the fitting hole 9 so as to face the annular groove of the cylindrical tip when the cylindrical tip 3 is fitted into the fitting hole.

嵌合孔ダに筒形チップ３を差込んで行くと、当初は筒形
チップの先端部外周によりボールデはバネｔに抗して押
圧子内に押込められるが、ボールデの位置に環状溝コが
到達するとバネ９で押されて環状溝コ内に突入し、筒形
チップが抜けるのを防止し、光ファイバー／を連結ない
し固定する。光ファイバーｌの連結を外すには、少し力
を加えて光ファイバー乞逆方向に引く。When the cylindrical tip 3 is inserted into the fitting hole, the cylindrical tip is initially pushed into the presser against the spring t by the outer periphery of the tip of the cylindrical tip, but an annular groove is formed at the position of the cylindrical tip. When the tip reaches the tip, it is pushed by the spring 9 and plunges into the annular groove, preventing the cylindrical tip from coming off and connecting or fixing the optical fiber. To disconnect the optical fiber l, apply a little force and pull the optical fiber in the opposite direction.

こｎによりボールデは再びバネにに抗して押圧子内に押
込めら几、筒形チップの先端がボールを通り過ぎると再
びバネｇで押されて嵌合孔の内周から突出てろ。As a result, the ball is pushed into the pusher again against the spring, and when the tip of the cylindrical tip passes the ball, it is pushed again by the spring and protrudes from the inner periphery of the fitting hole.

（効　果） こうして本発明によれば光ファイバーの着脱がネジを回
さないでワンタッチで行うことができろ。(Effects) Thus, according to the present invention, optical fibers can be attached and detached with one touch without turning a screw.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の一実施例の断面図、＠２図は同じく他
の一実施例力断面図、第３図は従来例の断面図で、図中
、／は光ファイバー、コは環状溝、３は筒形チップ、亨
は嵌合孔、夕は雌ねじ孔、７は押圧子、ｇはバネ、りは
ボールな示す。 特許出願人　　株式会社　ニ　フ　コ 同　代理人　弁理士　福　１）信　行（同　代理人　弁
理士　福　１）武　通、、（。 同　代理人　弁理士　福　１）賢　三１・１．′Fig. 1 is a sectional view of an embodiment of the present invention, Fig. 2 is a force sectional view of another embodiment, and Fig. 3 is a sectional view of a conventional example. , 3 is a cylindrical tip, ⌨ is a fitting hole, ▲ is a female screw hole, 7 is a presser, g is a spring, and ri is a ball. Patent applicant Nifco Co., Ltd. Agent: Patent attorney Fuku 1) Nobuyuki (same agent: Patent attorney Fuku 1) Michi Take, (.Same agent: Patent attorney Fuku 1) Kenzo 1.1. ′

Claims (1)

【特許請求の範囲】 外周に環状溝を有する筒形チップを端部に嵌着した光フ
ァイバーの連結装置において、 上記筒形チップが嵌合する嵌合孔に直交して雌ねじ孔を
開設し、バネと、上記バネにより押されて球面の一部が
先端から突出するボールを内蔵した押圧子を上記雌ねじ
孔に螺装し、上記押圧子の先端から突出したボールの球
面の一部を嵌合孔の内周に突出させて環状溝に係合させ
ることを特徴とする光ファイバーの連結装置。[Scope of Claim] In an optical fiber coupling device in which a cylindrical tip having an annular groove on the outer periphery is fitted to the end thereof, a female threaded hole is opened orthogonally to the fitting hole into which the cylindrical tip is fitted, and a spring is inserted into the coupling device. Then, a presser with a built-in ball that is pushed by the spring and has a part of its spherical surface protruding from its tip is screwed into the female screw hole, and a part of the spherical surface of the ball that protrudes from the tip of the presser is inserted into the fitting hole. What is claimed is: 1. An optical fiber coupling device that protrudes from the inner periphery of the optical fiber and engages with an annular groove.