200914902 九、發明說明： 【發明所屬之技術領域】 本發明係關於光纖的定位構造及光纖的定位方法。 本申請案係基於2007年5月23曰申請之曰本專利申請（特 願2007-137197) ’其内容係作為參照而併入本文。 【先前技術】 作為高精度定位光纖之核心（光軸）的方法，一般係將光 纖之被覆去除，用沾有無水酒精等之脫脂棉清潔後，插入 具有高精度且一定長度之V字溝或圓穴等進行定位。該等 方法須去除光纖之被覆，然而，已提案有無須去除光纖之 被覆便可進行定位之光纖定位方法及光連接器具（例如參 照專利文獻1)。 將專利文獻1之光連接器具用圖6表示。 圖6所示之光連接器具1〇〇具有連接器本體1〇1與蓋部件 102。連接器本體101具備導向部1〇3，其具有引導光纖（圖 示省略）並將光纖定位於寬度方向之溝丨〇3a ;及纖維孔 104，與上述導向部103相連，用來將光纖之前端插入其 中。蓋部件102，由連接器本體101之溝1〇3a之上方嵌合安 裝並將光纖向溝l〇3a按壓，且設置為可沿著溝1〇3a移動而 設置。 進行光纖之定位時，將多心之光纖插入連接器本體丨〇1 之導向部103之溝1〇3 a後，藉由於導向部1〇3安裝蓋部件 102，使插入之多心的光纖於溝103a之底面以一列特定之 排列間距排成一列而進行定位。 131534.doc 200914902 [專利文獻1]曰本公開專利：特開20064 6321〇號公報 【發明内容】 然而，過去定位用的溝或圓穴等，由於必須於光纖之長 度方向接觸數mm左右之長度，故不僅須盡量減少表面之 凹凸等’亦要求軸方向之真直度。因此要求高精度之部件 成形，因而光纖之定位部件較耗費成本。 "士此’本發明之目的在於提供一種能夠以簡易的構成進 f 行，精度之光纖^位之光纖的定位構造及定位方法。 能解決上述課題之本發明之光纖的定位構造，其特徵 為，於與光纖之轴線正交之同一剖面内，藉由在上述光纖 之周向的多處以刀尖抵接之刀部件，使上述光纖定位。 本發明之光纖的定位構造中，較好的是，上述刀尖之角 度為2〇。以上6〇。以下’且該刀尖之前端倒角為半徑20 μ. 以上125 μηι以下之圓弧狀。 :，本發明之光纖的定位構造中，較好的是，上述刀部 上丨塑膠:冓成，且上述刀部件之彈性率為〇.lxl〇i〇N/m2以 上 1.0x10 N/m2以下。 =發明之光纖的定位方法’其特徵為，於與光纖之 軸線正交之同_剖面内，於上 部件之刀尖而將上述光纖定位。纖之周向之多處抵接刃 【實施方式】 向：”Γ明，由於藉由將刀部件之刀尖抵接於光纖之周 向的夕處來進行定位，因此不要求 β 且相較於矾土 „ 件之同尺寸精度， 、過去使収位用之溝或圓穴等沿光纖之長度方向 131534,doc 200914902 的定位部件，可以簡易又廉價之構成 心仃円精度之定位。 又，用塑膠製刀部件之情形，可以不指 个相傷光纖之玻璃而定 位。 以下’茲佐參照圖示說明本發明之异 〈九纖的定位構造及定 位方法之實施形態之例。200914902 IX. Description of the Invention: [Technical Field of the Invention] The present invention relates to a positioning structure of an optical fiber and a positioning method of an optical fiber. The present application is based on a patent application filed on May 23, 2007, the entire disclosure of which is hereby incorporated by reference. [Prior Art] As a method of accurately positioning the core (optical axis) of an optical fiber, the coating of the optical fiber is generally removed, and after cleaning with a cotton wool impregnated with anhydrous alcohol, a V-shaped groove or a circle having a high precision and a certain length is inserted. Positioning such as holes. These methods are required to remove the coating of the optical fiber. However, an optical fiber positioning method and an optical connecting device capable of positioning without removing the coating of the optical fiber have been proposed (for example, refer to Patent Document 1). The optical connecting device of Patent Document 1 is shown in Fig. 6. The optical connector 1 shown in Fig. 6 has a connector body 1〇1 and a cover member 102. The connector body 101 is provided with a guiding portion 1〇3 having a guiding optical fiber (not shown) and positioning the optical fiber in the width direction of the groove 3a; and a fiber hole 104 connected to the guiding portion 103 for the optical fiber The front end is inserted into it. The cover member 102 is fitted and mounted by the groove 1〇3a of the connector body 101, and presses the optical fiber toward the groove 10a, and is provided so as to be movable along the groove 1〇3a. When positioning the optical fiber, inserting the multi-core optical fiber into the groove 1〇3 a of the guide portion 103 of the connector body 丨〇1, and installing the cover member 102 by the guiding portion 1〇3, the inserted multi-core optical fiber is The bottom surface of the groove 103a is positioned in a row at a specific arrangement pitch. [Patent Document 1] Japanese Laid-Open Patent Publication No. Hei. No. 20064 6321 No. JP-A No. 20064 6321 No. JP-A No. 20064 6321 No. Therefore, it is necessary to not only minimize the unevenness of the surface, but also the true straightness of the axial direction. Therefore, high-precision components are required to be formed, and thus the positioning components of the optical fiber are costly. The purpose of the present invention is to provide a positioning structure and a positioning method of an optical fiber capable of achieving an accurate optical fiber position with a simple configuration. The positioning structure of the optical fiber according to the present invention which solves the above-described problems is characterized in that, in the same cross section orthogonal to the axis of the optical fiber, the blade member abutting at a plurality of locations in the circumferential direction of the optical fiber causes the blade member to abut against the blade edge. The above fiber positioning. In the positioning structure of the optical fiber of the present invention, it is preferable that the angle of the cutting edge is 2 〇. Above 6〇. The following 'and the chamfering of the front end of the cutting edge is an arc of a radius of 20 μ. or more and 125 μηι or less. In the positioning structure of the optical fiber according to the present invention, it is preferable that the knives of the knives are formed of 丨, and the elastic modulus of the knives is 〇.lxl〇i〇N/m2 or more and 1.0x10 N/m2 or less. . The method of positioning an optical fiber according to the invention is characterized in that the optical fiber is positioned at a blade edge of the upper member in a cross section orthogonal to the axis of the optical fiber. A plurality of abutting edges in the circumferential direction of the fiber [Embodiment] To: "Ming Ming, since the blade tip of the blade member abuts on the circumferential direction of the optical fiber to perform positioning, β is not required and compared with 矾The same dimensional accuracy of the soil, the positioning of the groove or the hole in the past, along the length of the fiber 131534, doc 200914902 positioning components, can be simple and inexpensive to form the positioning of the heart. Moreover, in the case of a plastic knife component, it can be positioned without referring to the glass of the phase-damaged fiber. Hereinafter, an example of an embodiment of the positioning structure and the positioning method of the nine-fiber according to the present invention will be described with reference to the drawings.
圖1(A)係第1實施形態之光纖的定位構造的剖面圖丨圖 _從圖帽B方向所見之平面圖；圖2㈧係塑膠穿』 刃部件之刃尖形狀之一例的厚度方向的剖面圖；圖2(b)係 塑朦製刀部件之刀尖形狀之另一例的厚度方向的剖面圖； 圖3(A)及（B)係用本發明之光纖的定位構造進行光纖之連 接時之一例的側面圖；圖4(A)係玻璃部從被覆突出之切斷 方法的說明圖；圖4(B)係被覆之端部的放大剖面圖。 如圖1(A)及（B)所示，本發明之第上實施形態之光纖的定 位構造10係於與光纖11之軸線CL正交之同一剖面内進行該 光纖π之定位者’且具有塑膠製之刃部件20，其於光纖11 之玻璃部12之周向的多處以刀尖21抵接。 光纖之定位構造10，如圖1 (A)所示，設有2個刀尖21， 及將21以V字形配置之1個刃部件2〇，由圖1 (A)中上方將光 纖11推入2個刀尖21、21之間。由此，當光纖11有被覆！ 3 時’刃部件20之刃尖21將切入被覆13而貫通，並抵接於玻 璃部12之外周。另’以V字形配置之2個刀尖21、21，可於 1個刃部件2 0形成，然而，亦可於分別具有1個刃尖21之2 個塑膠製刃部件將刃尖21以V字形配置。 刃部件20’如圖2所示’較好的是，刃尖21之角度α為 131534.doc 200914902 20。以上60。以下，且該刀尖21之前端作半徑R=2〇 以上 125 μπι以下之圓弧狀斜劈。另，圖2(Α)為於刃尖以之兩側 設有錐面21a、21a之情形（即雙刃形），圖2(Β)為僅於刃尖 21之一方設有錐面21 a之情形（即單刃形）。 即，當刃尖21之角度《小於2〇。時刀尖21之強度將不足， 故不適宜。另一方面，當刀尖21之角度α大於6〇。時，切開 被覆13之銳利度將不夠充分。又，刃尖21之前端的倒角， 當半徑α小於20 μιη時，刃尖21之強度較弱，有可能在切開 Γ 被覆13前斷裂。另一方面，當倒角之半徑α大於125 μηι 時’切開被覆13之銳利度將不夠充分。 因此’藉由將刃尖角度α設在2〇。以上60。以下，由於切 開被覆13後刃尖21會到達玻璃部12，故可以進行玻璃部12 之疋位。又，藉由將刀尖21之前端的倒角半徑r設在2〇 μιη 以上125 μιη以下，當刀尖21抵接於玻璃部12時，可防止損 傷玻璃部12。 又’較好的是’塑膠製之刃部件20的彈性率為〇.1χ1〇ι〇 U N/m2以上N/m2以下。即，使刃部件2〇設為硬於被 覆13之材質，但例如比尼龍軟。 ' 因此，藉由將刃部件20之彈性率設於該範圍内，可切開 • 被覆丨3使刃尖21到達玻璃部12，且當刃尖21抵接於玻璃部 1 2時，可防止損傷玻璃部丨2。 其次，說明光纖之定位方法之例。 如圖1所示，本實施形態之光纖的定位方法，係於與光 纖11之軸線CL正交之同一剖面内，於光纖11之玻璃部丨2之 131534.doc 200914902 周向的多處（此處為2個）抵接刃部件2〇之刃尖21，而將光纖 11之玻璃部12定位。即’於設於特定位置之刃部件2〇將光 纖11於直控方向推入’藉由複數個刃尖2丨切開被覆丨3，使 刃尖21之前端抵接於玻璃部12。由此，將玻璃部12由周向 之複數點支撐而進行定位。 圖3(A)及（B)表示利用了上述本發明之光纖之定位構造 及定位方法的光纖11的連接狀態之一例。 圖3(A)所示之連接狀態中，藉由各刀部件2〇、2〇將連接 之兩方的光纖11、II定位並支撐。光纖n、u之端部有玻 璃部12突出，能夠將玻璃部丨2、丨2之端面丨i 2a相互對 接。另，亦可使折射率匹配劑之膠狀物或膜介在於玻璃部 12 12之鈿面12a、12a間。另，藉由使支撐光纖n、丨丨之 兩方的刃部件20、20可以向光纖丨丨之軸方向（圖3中左右方 向）作水平移動，使支撐光纖U之刃部件2〇、2〇相互接 近，便可將兩端面12a、12a對接。 又，如圖3(A)所示，為使玻璃部12突出於光纖n之端 部，如圖4(A)，將光纖丨1向兩側拉伸賦與其張力，於該狀 態下藉由用切斷用之刀丨4將玻璃部12劃一道口使之裂開即 可切斷光纖11。由此，被覆13於拉伸狀態下被切斷後，如 圖4(B)所心由於被覆13之端部收縮成波紋狀（波紋部叫 收縮，故玻璃部12之端部12b突出。 另，如圖3(B)所示’即使光纖"之端部破璃部12未由被 覆13突出，亦可與圖3(A)之情形同樣進行連接。 根據以上說明之光纖之定位構造及其定位方法，由於刀 I31534.doc -10· 200914902 部件20之複數刃尖2丨抵接於光纖u之玻璃部^之周向的多 處以玻璃部12之外周面作為基準而定位，故可以簡易且 廉價之構成高精度地進行光纖〗〗之定位（尤其，玻璃部12 之定位）。 又，如圖4(B)所說明，即使被覆丨3呈波紋狀凹凸，只要 用上述刃部件20即可切開被覆13進行定位，故被覆13可以 如同平坦時一樣支撐，且由於是以玻璃部12為基準定位， 故可進行高精度之定位。 其次，說明本發明之光纖之定位構造之第2實施形態。 圖5(A)及（B)係本發明之第2實施形態之光纖的定位構造 的剖面圖。另’與上述第丨實施形態共通之部位賦與其相 同符號，省略重複之說明。 如圖5(A)及（B)所示，第2實施形態之光纖的定位構造 1 0A具備前端上有刃尖2丨之3個刃部件2〇a。各刀部件 20A，可以以於圓周之3等分之位置（即，12〇度間隔）將刀 尖21抵接於玻璃部12而配置。該情形時，由於是以於周向 保持平衡之3處藉由刃尖21支撐’故能可靠地防止向直徑 方向之位置偏離。 進行光纖11之定位時，如圖5(A)所示，於光纖11之被覆 13之外周面的3處抵接刀部件20之刃尖21，再如圖5(B)所 示將3個刃尖21分別推入被覆13。藉此，刀尖21會將被覆 13切開而到達玻璃部12，玻璃部12便藉由刀尖21由3方定 位並被支樓。 另’上述各實施形態說明了附有被覆13之光纖之定 131534.doc -11 - 200914902 亦可使用 位，然而本發明之光纖的定位構造及定位方法 於無被覆而僅有玻璃部之光纖。 又’上述實施形態， 2處或3處來定位之情 位。 說月了藉由刀尖21支擇玻璃部12之 形’然亦可支揮4處卩上進行定Fig. 1(A) is a cross-sectional view showing a positioning structure of an optical fiber according to a first embodiment, a plan view seen from a direction of a hat B, and Fig. 2(8) is a cross-sectional view in the thickness direction of an example of a tip shape of a plastic member. Fig. 2(b) is a cross-sectional view in the thickness direction of another example of the shape of the tip of the plastic knives; Fig. 3(A) and Fig. 3(B) are diagrams showing the connection of the optical fibers by the positioning structure of the optical fiber of the present invention; Fig. 4(A) is an explanatory view showing a method of cutting the glass portion from the coating; and Fig. 4(B) is an enlarged cross-sectional view showing the end portion of the coating. As shown in Figs. 1(A) and (B), the positioning structure 10 of the optical fiber according to the first embodiment of the present invention is such that the optical fiber π is positioned in the same cross section orthogonal to the axis CL of the optical fiber 11 and has The plastic blade member 20 is abutted by the blade edge 21 at a plurality of locations in the circumferential direction of the glass portion 12 of the optical fiber 11. As shown in Fig. 1(A), the optical fiber positioning structure 10 is provided with two blade tips 21 and one blade member 2〇 which is disposed in a V shape, and is pushed by the optical fiber 11 from the upper side in Fig. 1(A). Enter between two cutting edges 21, 21. Thus, when the optical fiber 11 is covered! At 3 o'clock edge 21, the blade edge 21 of the blade member 20 is cut into the cover 13 and penetrates, and abuts against the outer periphery of the glass portion 12. Further, the two cutting edges 21 and 21 arranged in a V shape may be formed by one blade member 20, but the blade tips 21 may be V at the two plastic blade members each having one blade edge 21. Glyph configuration. The blade member 20' is as shown in Fig. 2. Preferably, the angle ? of the blade tip 21 is 131534.doc 200914902 20. Above 60. Hereinafter, the front end of the cutting edge 21 is made of an arc-shaped oblique ridge having a radius R = 2 〇 or more and 125 μπι or less. 2(Α) is a case where the blade tips are provided with tapered surfaces 21a and 21a on both sides (ie, a double-edged shape), and FIG. 2(Β) is a tapered surface 21a only on one of the blade tips 21. The situation (ie single-edged). That is, when the angle of the blade tip 21 is "less than 2 inches. When the strength of the tip 21 is insufficient, it is not suitable. On the other hand, when the angle α of the cutting edge 21 is larger than 6 〇. When cutting, the sharpness of the covering 13 will not be sufficient. Further, when the radius α is less than 20 μm, the chamfering of the tip end 21 is weak, and it is possible to break before the Γ coating 13 is cut. On the other hand, when the radius α of the chamfer is larger than 125 μη, the sharpness of the cut-away coating 13 will be insufficient. Therefore, by setting the blade tip angle α to 2〇. Above 60. Hereinafter, since the blade edge 21 reaches the glass portion 12 after the coating 13 is cut, the glass portion 12 can be clamped. Further, by setting the chamfering radius r of the front end of the blade edge 21 to 2 μm or more and 125 μm or less, when the blade edge 21 abuts against the glass portion 12, the glass portion 12 can be prevented from being damaged. Further, it is preferable that the elastic modulus of the plastic blade member 20 is χ1χ1〇ι〇 U N/m2 or more and N/m2 or less. That is, the blade member 2 is made harder than the material of the cover 13, but is, for example, softer than nylon. Therefore, by setting the elastic modulus of the blade member 20 within this range, it is possible to cut the coating 丨3 so that the blade edge 21 reaches the glass portion 12, and when the blade edge 21 abuts against the glass portion 12, damage can be prevented. Glass part 丨 2. Next, an example of a method of positioning an optical fiber will be described. As shown in FIG. 1, the positioning method of the optical fiber according to the present embodiment is in the same cross section orthogonal to the axis CL of the optical fiber 11, and is in the circumferential direction of the glass portion 丨2 of the optical fiber 11 (131534.doc 200914902). At the same time, the blade portion 21 of the blade member 2 is abutted, and the glass portion 12 of the optical fiber 11 is positioned. That is, the blade member 2 is placed at a specific position to push the optical fiber 11 in the direct control direction. The cover 丨 3 is cut by a plurality of blade tips 2, and the front end of the blade edge 21 abuts against the glass portion 12. Thereby, the glass portion 12 is supported by a plurality of points in the circumferential direction to be positioned. 3(A) and 3(B) show an example of a connection state of the optical fiber 11 using the positioning structure and the positioning method of the optical fiber of the present invention. In the connected state shown in Fig. 3(A), the connected optical fibers 11 and II are positioned and supported by the respective blade members 2A and 2B. At the ends of the optical fibers n and u, the glass portion 12 is protruded, and the end faces 丨i 2a of the glass portions 丨2 and 丨2 can be brought into contact with each other. Alternatively, a gel or film of the index matching agent may be interposed between the top faces 12a, 12a of the glass portion 1212. Further, by causing the blade members 20 and 20 supporting the optical fibers n and 丨丨 to be horizontally moved in the axial direction of the optical fiber ( (the horizontal direction in FIG. 3), the blade members 2, 2 supporting the optical fiber U are provided. When the crucibles are close to each other, the end faces 12a and 12a can be butted. Further, as shown in FIG. 3(A), in order to cause the glass portion 12 to protrude from the end portion of the optical fiber n, as shown in FIG. 4(A), the optical fiber bundle 1 is stretched to the both sides and tension is applied thereto. The optical fiber 11 can be cut by slitting the glass portion 12 with a knife 4 for cutting. Thereby, after the cover 13 is cut in the stretched state, the end portion of the cover 13 is contracted into a corrugated shape as shown in Fig. 4(B) (the corrugated portion is contracted, so that the end portion 12b of the glass portion 12 protrudes. As shown in Fig. 3(B), even if the end glass frit 12 of the optical fiber is not protruded by the covering 13, it can be connected in the same manner as in the case of Fig. 3(A). In the positioning method, since the plurality of blade tips 2 of the member 20 in the circumferential direction of the glass portion of the optical fiber u are positioned in the circumferential direction of the glass portion 12 as a reference, it is easy to use. The inexpensive structure is positioned with high precision (in particular, the positioning of the glass portion 12). Further, as shown in Fig. 4(B), even if the coating 丨3 has corrugated irregularities, the blade member 20 can be used. Since the covering 13 is positioned and positioned, the covering 13 can be supported as if it were flat, and since the glass portion 12 is positioned as a reference, positioning with high precision can be performed. Next, a second embodiment of the positioning structure of the optical fiber of the present invention will be described. Figure 5 (A) and (B) are the second aspect of the present invention The cross-sectional view of the locating structure of the optical fiber according to the embodiment. The same components as those of the above-described embodiment are denoted by the same reference numerals, and the description thereof will not be repeated. As shown in Figs. 5(A) and (B), the second embodiment The positioning structure 10A of the optical fiber includes three blade members 2A having a blade edge 2'' on the tip end. Each blade member 20A can be used to position the blade tip 21 at a position equal to three points of the circumference (that is, at intervals of 12 degrees). It is disposed in contact with the glass portion 12. In this case, since the three points in the circumferential direction are supported by the blade tip 21, it is possible to reliably prevent the positional deviation in the radial direction. When the optical fiber 11 is positioned, As shown in Fig. 5(A), the blade edge 21 of the blade member 20 is abutted at three outer circumferential surfaces of the coating 13 of the optical fiber 11, and the three blade tips 21 are pushed into the coating as shown in Fig. 5(B). 13. Thereby, the blade edge 21 cuts the cover 13 to reach the glass portion 12, and the glass portion 12 is positioned by three sides by the blade edge 21 and is branched. The other embodiments described above are attached with the cover 13 Fiber optics can be used 131534.doc -11 - 200914902 can also use bits, however, the positioning structure and positioning method of the optical fiber of the present invention In the above-mentioned embodiment, two or three places are positioned for positioning. In the month, the shape of the glass portion 12 is selected by the cutting edge 21. Set on the raft
以上參照詳細或特定的實施形態說明了本發明，秋而， 同業者應明瞭’只要不脫離本發明之精神與範圍可加以種 種更改或修正【圖式簡單說明】 圖1⑷係本發明之第1實施形態之光纖的定位構造的剖 面圖’（B)係從圖方向所見之平面圖； 圖2(A)係塑膝製刃部件之刃尖形狀之—例的剖面圖， (B)係塑膠製刀部件之刃尖形狀之另一例的剖面圖； 圖3(A)及（B)係用本發明之光纖的定位構造進行光纖之 連接時之例的側面圖；The present invention has been described above with reference to the detailed or specific embodiments of the present invention. It is to be understood by those skilled in the art that the present invention may be modified or modified without departing from the spirit and scope of the invention. FIG. 1(4) is the first aspect of the present invention. FIG. 2(A) is a cross-sectional view showing a shape of a blade tip of a knee-shaped blade member, and FIG. 2(A) is a plastic case. A cross-sectional view showing another example of the shape of the blade edge of the blade member; and Figs. 3(A) and (B) are side views showing an example of the connection of the optical fibers by the positioning structure of the optical fiber of the present invention;
圖4(A)係玻璃部突出之切斷方法的說明圖’（b)係被覆 之端部的放大剖面圖； 圖5(A)係本發明之第2實施形態之光纖的定位構造及定 位方法之—步驟的剖面圖，（B)係定位後之狀態的剖面 圖； 圖6係具有過去之定位構造的光連接器具之例的概略 圖0 【主要元件符號說明】 1(3 ’ 1QA 定位構造 131534.doc •12· 200914902 11 光纖 12 玻璃部 20 ， 20A 塑膠製刃部件 21 刀尖 CL 軸線 α 刃尖之角度 R 刃尖之前端 131534.doc - 13 -4(A) is an explanatory view of a cutting method of a glass portion protruding; FIG. 5(A) is an enlarged cross-sectional view of an end portion of the coating; FIG. 5(A) is a positioning structure and positioning of the optical fiber according to the second embodiment of the present invention. The cross-sectional view of the method-step, (B) is a cross-sectional view of the state after positioning; FIG. 6 is a schematic diagram of an example of the optical connector having the past positioning structure [Description of main component symbols] 1 (3 ' 1QA positioning Construction 131534.doc •12· 200914902 11 Fiber 12 Glass 20 , 20A Plastic blade part 21 Tip CL axis α Angle of the tip R Tip end 131534.doc - 13 -