201142400 六、發明說明： 【發明所屬之技術領域】 本發明，是關於光纜，特別是關於凹槽核心的凹槽收 納有光纖的光纜。 【先前技術】 光纜，是有設置在凹槽核心的凹槽收納有光纖芯線的 槽型光纜。收納在槽型光纜的光纖芯線，爲了要提昇光纖 彼此連接時的作業性，多數是使用經並排配置複數條光纖 芯線在整批包覆該等光纖芯線後形成的光纖帶芯線。該光 纖帶芯線，是可由整批包覆後的複數條光纖芯線以整批焊 接連接或連接器連接構成。 近年來，光纜高密度細徑化的要求提高。對於槽型光 纜也是同樣的要求。槽型光纜的外徑，是大幅依據其凹槽 核心的粗細，若要實現槽型光纜的細徑化則需要有較細的 凹槽核心。接著，凹槽核心的粗細，是依據光纖芯線收納 用的凹槽尺寸，若凹槽能夠形成爲較小就能夠使凹槽核心 細徑化。 然而，如第8圖所示，在長度方向同樣位置收納經帶 化材加工後的光纖帶芯線111時，因層疊在凹槽中的光纖 帶芯線1 1 1是需要能夠旋轉，所以在設計凹槽尺寸時，是 需要先描繪光纖芯線1Π層疊爲所需片數時的外切圓140, 再將凹槽形成爲該外切圓14〇以上的尺寸。該方法是需要 將凹槽的尺寸形成爲和層疊後之光纖帶芯線1 1 1的外切圓 -5- 201142400 141相同尺寸’或者形成爲比外切圓140還大，因此 爲凹槽核心1 20細徑化的累贅，進而成爲光纜細徑 贅。 此外，近年來，與光纜細徑化的要求相同纜線 提昇的要求也變高，其中就要求光纜的焊接作業需 若只是要實現上述的光纜細徑化，是可不使用光纖 ，改採用單芯的光纖素線就能夠使凹槽核心細徑化 ’使用光纖素線的光纜，在黏赴作業時是比使用光 線的光纜還需要較多的焊接時間，以致成爲施工性 累贅。 〔先行技術文獻〕 〔專利文獻〕 〔專利文獻1〕日本特開2005-62427號公報 〔專利文獻2〕日本特開2007-279226號公報 【發明內容】 本發明是有鑑於上述情況所硏創的發明，目的 一種能夠實現高密度細徑化及提昇施工性的光纜。 根據本發明的一形態，其主旨爲，光纜，具帝 以上的光纖芯線；間歇性設置在光纖芯線的長度方 度方向的兩方向，並且以不接觸的狀態隔著距離相 在光纖芯線的寬度方向，固定彼此鄰接之2芯的光 間用的間隔固定部；外圍面設有收納光纖芯線用之 凹槽核心；及設置在凹槽核心外圍的外皮，構成爲 反而成 化的累 施工性 容易。 帶芯線 。然而 纖帶芯 提昇的 是提供 f : 3芯 向和寬 鄰設置 纖芯線 凹槽的 由間隔 -6- 201142400 固定部固定的光纖芯線是密集成束狀。 根據本發明的另一形態時，光纜，其主旨舄，光纖芯 線是扭曲成螺旋狀。 根據本發明的另一形態時，光纜，其主旨馬，％ _ $ 線是捲繞有識別線。 根據本發明的另一形態時，光纜，其主旨馬，光；纖芯 線是捲繞有識別帶。 根據本發明的另一形態時，光纜，其主旨爲，光纖芯 線是2芯帶芯線。 根據本發明的另一形態時，光纜，其主旨爲，間隔固 定部是紫外線固化樹脂。 根據本發明的另一形態時，光纜，其主旨爲，間隔固 定部是熱固化樹脂。 【實施方式】 〔發明之實施形態〕 以下’是參照圖面對本發明的實施形態進行說明。以 下的圖面記載中，對於同一或類似的部份是標示同一或類 似的圖號。但是，圖面爲模式性圖，厚度和平面尺寸的關 係’及’各層的厚度比率等是和實際不同。因此，具體性 的厚度或尺寸是參照以下說明就能夠判斷得知。此外，圖 面彼此間’理所當然是包括彼此的尺寸關係或比率不同的 部份。 201142400 (第1實施形態） 本發明第1實施形態相關的光纜1，如第1 ( a )圖及第 3圖所示，具備：3芯以上的光纖芯線1 〇 :間歇性設置在光 纖芯線10長度方向和寬度方向的兩方向，並且以不接觸的 狀態隔著距離相鄰設置在光纖芯線1 〇寬度方向，要固定彼 此鄰接之2芯的光纖芯線10間用的間隔固定部50 ;外圍面 設有要收納光纖芯線10用之凹槽22的凹槽核心20 ;及設置 在凹槽核心20外圍的外皮30，構成爲由間隔固定部50固定 的光纖芯線1 〇是密集成束狀。 光纜1，再加上，又具備有抗拉構件24在凹槽核心20 的軸中心。抗拉構件24，是一種可使光纜1所負荷的張力 不會直接傳達至光纖芯線10的抗拉體。抗拉構件24，例如 是由鋼線所構成。 外皮3 0 ’例如是由聚乙烯樹脂等樹脂形成。外皮3 0的 內圍側’是施有可防止光纖芯線1 0從凹槽核心2 0脫離的固 定圏套。 「光纖芯線10、110」，如第2(a)圖及第2(b)圖 所示，是指是在傳送光用的傳送路即裸光纖12' 112的外 圍包覆有包覆層14、11 4後的光纖芯線。裸光纖12、112, 例如是由直徑1 25 /z m的玻璃材及塑膠材形成之傳送光用的 傳送路。包覆層1 4、1 1 4，例如：紫外線固化樹脂、尼龍 、聚嫌烴、聚醯fee、聚醋、聚氨醋、聚氨醋丙嫌酸酯等。 凹槽核心20 ’是隔著指定間隔設有複數凹槽22在外圍 。凹槽22’是設置成週期性重覆交替s型圈繞、z型圈繞形 -8- 201142400 成連接著，即設置成所謂的SZ型螺旋形狀。 凹槽核心2 0的凹槽2 2，如第1 ( a )圖所示，是收納有 複數整理成束狀狀態之3芯以上的光纖芯線1 0。束狀的光 纖芯線10，如第3圖所示，是由η條的光纖芯線10 ,、1〇2 — …10«^、1〇η，經間歇性設置在光纖芯線10長度方向及寬 度方向之二方向的間隔固定部50固定成互相鄰接之2芯的 光纖芯線1 0彼此所形成。間隔固定部50，是隔著距離設置 在光纖芯線1 0寬度方向設置成彼此相鄰不接觸。 間隔固定部5 0，如第3圖所示，是一種可使鄰接之2芯 的光纖芯線1 〇形成固定的帶狀構件。複數設有間隔固定部 5 0時，是以位置錯開的狀態設置在光纖芯線10的長度。此 外，間隔固定部5 0，也可以是利用紫外線固化樹脂或熱塑 性樹脂從上下固定鄰接之2芯的光纖芯線1 〇之間。 經間隔固定部50固定的光纖芯線1 0，如第4圖所示， 是每4芯捲繞綁有識別線60。識別線60，是爲了要確保能 夠從複數條光纖芯線1 0當中辨識出所期望之光纖芯線1 0的 芯線識別性之識別用的有色線。用識別線60綁住的光纖芯 線1 0的芯數，並不限於4條，也可每2 0條至4 0條綁有識別 線。光纖芯線1 〇捆綁用及識別用的識別線60也可取代成第 5圖所示的識別帶62。若是使用識別帶62，則不僅能夠以 顏色做爲辨識’還能夠施有點陣印刷等加以辨識。 第1實施形態相關的光纜1，如第1 ( a )圖所示，當要 將複數的光纖芯線1 〇收納在凹槽2 2時，因成束狀的光纖芯 線10在凹槽22中是需要能夠旋轉，所以在設計凹槽22的尺 201142400 寸時，是需先描繪束狀的光纖芯線1 〇以需求芯線數成束時 的外切圓40再將凹槽22形成爲該外切圓40以上的尺寸。根 據束狀的光纖芯線10形成的外切圓40的直徑d3，是圖示在 第2 ( a )圖。根據束狀的光纖芯線1 0形成的外切圓40的直 徑d3，是在光纖芯線1 0爲密集狀態時成爲最細徑化的狀態 〇 此外，第1實施形態相關的光纜1，在將複數的光纖芯 線10收納在凹槽22時，因複數的光纖芯線10能以單芯單位 移動，所以即使是任何形狀的凹槽形狀，光纖芯線1 〇都能 夠在凹槽22內移動。因此，凹槽22的尺寸，只要形成爲能 夠組裝光纖芯線1〇的凹槽面積即可，所以凹槽22就能夠細 徑化。 另一方面，先前的光纜100，如第1 (b)圖所示，於 複數的光纖芯線110配置成並排後，將該光纖芯線no整批 包覆後的光纖帶芯線Π 1收納在凹槽122時，因光纖帶芯線 111在凹槽122中是需要能夠旋轉，所以在設計凹槽122的 尺寸時，是需先描繪光纖帶芯線111以需求片數層疊後的 外切圓140，再將凹槽的尺寸122形成爲該外切圓140以上 的尺寸。根據需求片數層疊後的光纖帶芯線Π1形成的外 切圓140的直徑d4，如第2 ( b )圖所示，因只是單純層疊 光纖帶芯線1 1，所以就形成爲比根據束狀的光纖芯線1 〇形 成的外切圓40的直徑d3還大。 第1實施形態相關的光纜1，如以上所述是能夠將根據 束狀的光纖芯線1 〇形成的外切圓40的直徑細徑化，所以 -10- 201142400 就能夠將凹槽22設計成較小，能夠使凹槽核心20細徑化。 此外，第1實施形態相關的光纜1，因能夠將凹槽核心20細 徑化，所以就能夠使光纜1的直徑6比先前的光纜1 00的直 徑d2還細徑化。 另外，第1實施形態相關的光纜1，是在複數設有間隔 固定部50時，將間隔固定部50間歇性設置在光纖芯線10長 度方向及寬度方向的二方向，因此就能夠防止間隔固定部 50重疊能夠使光纖芯線1〇捆綁成束。如此一來，就有助於 凹槽核心20及光纜1的細徑化。 此外，第1實施形態相關的光纜1，因是使用光纖芯線 1 0，所以和使用光纖素線的光纜相比是能夠減少焊接時間 ，因此能夠實施施工性的提昇。 於此，實施例，是對第1實施形態相關的光纜1和先前 的光纜100其尺寸等的相對値進行比較，該比較表是揭示 在表1。光纜是構成爲在第1實施形態相關的光纜1的凹槽 22及先前的光纜100的凹槽122，分別收納有100芯之光纖 芯線10的100芯型光纜。 [表1] 構造 先前的光纜 本發明的光纜 凹槽外徑 1 0.80 光纜外徑 1 0.86 光纜質量 1 0.77 槽寬 1 0.81 槽深 1 0.83 特性 〇 〇 -11 - 201142400 根據該表1的結果，凹槽核心外徑、光纜外徑、光纜 質量、凹槽寬度、凹槽深度的各項，第1實施形態相關的 光纜1是比先前的光纜1〇〇還減少約20%。此外，傳送特性 、防水特性等有關光纖的特性，第1實施形態相關的光纜1 及先前的光纜1 00雙方都能夠滿足特性條件。即，根據該 表1的結果，是呈現出第1實施形態相關的光纜1能夠滿足 特性條件的同時，還能夠細徑化。 (第2實施形態） 本發明第2實施形態相關的光纜1，如第6圖所示，其 與第1實施形態相關的光纜1不同之處爲3芯的光纖芯線10 是扭轉成螺旋狀。除此之外其他構成實質上是和第1實施 形態相同，因此省略相同構成的重複記載。 光轉芯線1 〇，是以扭轉成螺旋狀的狀態由間隔固定部 50固定著。扭轉成螺旋狀的光纖芯線10，在第6圖中是圖 示爲3芯，但並不限於3芯，也可以是3芯以上。 扭轉成螺旋狀的光纖芯線1〇，如第6圖所示’也可以 是於長度方向扭轉成一樣的狀態，但也可以是包含有未扭 轉的部份。 上述構成的第2實施形相關的光纜1，也是能夠獲得和 第1實施形態相關的光纜〗相同的效果。 另外，根據第2實施形態相關的光纜1時’因光纖芯線 1 〇是扭轉成螺旋狀，所以就能夠使光纖芯線1 0成爲更密集 •12- 201142400 的狀態，能夠使束狀的光纖芯線1 〇更加細徑化。 (第3實施形態） 本發明第3實施形態相關的光纜1，如第7圖所示，其 不同之處是將單芯的光纖芯線10改成由2芯的光纖芯.線10 構成的2芯帶芯線1 1。有關其他的構成，實質上是和上述 的實施形態相同，因此省略相同構成的重複記載。 2芯帶芯線1 1，是構成爲排列有光纖芯線1 0，利用紫 外線固化型樹脂或熱塑性樹脂從上下連結2條的光纖芯線 1 0之間。 上述構成的第3實施形相關的光纜1，也是能夠獲得和 第1實施形態相關的光纜1相同的效果。 此外，根據第3實施形相關的光纜1時，是使用由2芯 的光纖芯線1 〇所形成的2芯帶芯線1 1，因此整批連接特性 及識別性優越。接著，要收納在凹槽22時2芯帶芯線1 1是 可綁成束狀，因此還能夠有助於凹槽核心2〇及光纜1的細 徑化。 (其他的實施形態） 如上述，本發明是根據實施形態進行了記載’但應可 理解到論及該揭示一部份的記述及圖面並不能限定本發明 。足以明確的是該當業者能夠根據該揭示進行各式各樣的 實施形態、實施例及運用技術。 例如：第1實施形態中凹槽2 2 ’是以底部爲曲面進行 -13- 201142400 了說明，但並不限於曲面’也可以是平面。同樣地，凹槽 2 2的側面，是以平面進行了說明’但也可以是曲面。 再加上，第1實形態中，是針對收納有1 00芯之光纖芯 線10的100芯型的光纜進行了記載，但並不限於此，也可 應用在收納有200芯型、300芯型等其他條數之光纖芯線10 的光纜1。 如以上所述，讀者應可理解到本發明包括於此未記載 的各式各樣實施形態等。因此，本發明是從以上揭示藉由 妥當的申請專利範圍之發明特定事項加以限定。 〔產業上之可利用性〕 本發明的光纜，是可利用在光通訊產業及計測機器製 造產業等 【圖式簡單說明】 第1 ( a )圖爲本發明第1實施形態相關的槽型光纜剖 面圖，第1 (b)圖爲先前的槽型光纜剖面圖。 第2 ( a )圖爲本發明第丨實施形態相關的束狀光纖芯 線剖面圖，第2 ( b )圖爲先前的層疊狀光纖帶芯線剖面圖 〇 第3圖爲表示本發明第！實施形態相關的光纖芯線和間 隔固定部的透視圖。 第4圖爲表示本發明第1實施形態相關的光纖芯線和識 別線的透視圖。 -14- 201142400 第5圖爲表示本發明第1實施形態相關的光纖芯線和識 別帶的透視圖。 第6圖爲表示本發明第2實施形態相關的光纖芯線透視 圖。 第7圖爲表示本發明第3實施形態相關的光纖芯線（2 芯帶芯線）透視圖 第8圖爲先前凹槽光纜的凹槽部剖面圖。 【主要元件符號說明】 1、1 00 :光纜 1 0、1 1 0 :光纖芯線 1 1 : 2芯帶芯線 1 1 1 :光纖帶芯線 12、1 12 :裸光纖 1 4、1 1 4 :包覆層 2 0、1 2 0 :凹槽核心 22 、 122 :凹槽 2 4、1 2 4 :抗拉構件 3 0、1 3 0 :外皮 4 0、1 4 0 :外切圓 5 0 :間隔固定部 6〇 :識別線 62 :識別帶 1 0 1 ' 1 〇2 ' 1 〇3 ' 1 〇4 ' ......:光纖芯線 -15- 201142400 10n.3、10n.2、10η.,、10n :光纖芯線 d ^ :光纜1的直徑 d2 :光纜100的直徑 d3 :外切圓40的直徑 d4 :外切圓140的直徑 -16-201142400 VI. Description of the Invention: [Technical Field] The present invention relates to an optical cable, and more particularly to a fiber optic cable in which a groove of a groove core is received. [Prior Art] A fiber optic cable is a slot type optical cable in which a fiber core is accommodated in a groove provided in a groove core. In order to improve the workability when the optical fibers are connected to each other, the optical fiber core wires accommodated in the slot type optical fiber cable are mostly formed by arranging a plurality of optical fiber core wires side by side to cover the optical fiber core wires after the entire batch of the optical fiber core wires are coated. The fiber ribbon core wire can be composed of a plurality of bundled optical fiber cores which are coated in whole batches or connected by a whole batch of solder joints or connector connections. In recent years, the demand for high-density and thinning of optical cables has increased. The same is true for slotted cables. The outer diameter of the slot cable is based on the thickness of the core of the groove. To achieve the diameter of the slot cable, a fine groove core is required. Next, the thickness of the groove core is based on the size of the groove for accommodating the core of the optical fiber, and the groove core can be made thinner if the groove can be formed smaller. However, as shown in Fig. 8, when the optical fiber ribbon 111 processed by the tape processing is stored at the same position in the longitudinal direction, the optical fiber ribbon 11 1 1 laminated in the groove needs to be rotatable, so the design is concave. In the case of the groove size, it is necessary to first describe the circumscribed circle 140 when the optical fiber core 1 is stacked into a desired number of sheets, and then form the groove to have a size of the circumscribed circle of 14 〇 or more. The method is such that the size of the groove needs to be formed to be the same size as the circumscribed circle-5- 201142400 141 of the laminated optical fiber ribbon 1 1 1 or formed to be larger than the circumscribed circle 140, thus being the groove core 1 20 thinning and cumbersome, and then become the fine diameter of the cable. In addition, in recent years, the requirements for the cable diameter increase are also higher than the requirements for the thinning of the optical cable. Among them, the welding operation of the optical cable is required to achieve the above-mentioned thinning of the optical cable, and the optical fiber can be used instead of the single core. The fiber optic cable can make the groove core thinner. The fiber optic cable using the fiber optic cable requires more welding time than the fiber optic cable when it is stuck in the work, which is a construction cumber. [PRIOR ART DOCUMENT] [Patent Document 1] [Patent Document 1] JP-A-2005-62427 (Patent Document 2) JP-A-2007-279226 SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances. The invention aims to realize an optical cable capable of achieving high-density thinning and improving workability. According to an aspect of the present invention, an optical fiber cable having an optical fiber core of more than or equal to an emperor is intermittently disposed in two directions in a longitudinal direction of the optical fiber core, and is spaced apart from each other by a distance in a width of the optical fiber core. In the direction, the spacer fixing portion for the two cores adjacent to each other is fixed; the peripheral surface is provided with a groove core for accommodating the optical fiber core; and the outer skin disposed at the periphery of the groove core is formed to be easy to be formed. . With a core wire. However, the ribbon core is lifted to provide f: 3 cores and wide adjacent core lines. The fiber cores fixed by the spacers -6- 201142400 are tightly bundled. According to another aspect of the present invention, in the optical cable, the main point is that the optical fiber core is twisted into a spiral shape. According to another aspect of the present invention, in the optical cable, the subject horse, the % _ $ line is wound with the identification line. According to another aspect of the present invention, the optical cable has a subject horse, light; and the core wire is wound with an identification tape. According to another aspect of the present invention, the optical cable is characterized in that the optical fiber core is a 2-core cored wire. According to another aspect of the invention, the optical cable is characterized in that the spacer fixing portion is an ultraviolet curable resin. According to another aspect of the invention, the optical cable is characterized in that the spacer fixing portion is a thermosetting resin. [Embodiment] [Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following drawing, the same or similar parts are denoted by the same or similar drawing numbers. However, the drawing is a schematic diagram, and the relationship between the thickness and the plane size 'and the thickness ratio of each layer, etc., is different from the actual one. Therefore, the thickness or size of the specificity can be judged by referring to the following description. Further, it is a matter of course that the drawings include portions having different dimensional relationships or ratios from each other. 201142400 (1st Embodiment) The optical fiber 1 according to the first embodiment of the present invention includes three or more cores of optical fibers 1 as shown in the first (a) and third drawings: intermittently disposed on the optical fiber core 10 The two directions of the longitudinal direction and the width direction are disposed adjacent to each other in the width direction of the optical fiber core 1 in a non-contact state, and the spacer fixing portion 50 for the two-core optical fiber core 10 adjacent to each other is fixed; A groove core 20 for accommodating the recess 22 for the optical fiber core 10; and a sheath 30 provided at the periphery of the recess core 20 are formed so that the optical fiber core 1 固定 fixed by the spacer fixing portion 50 is densely bundled. The optical cable 1, in addition, is provided with a tensile member 24 at the center of the axis of the recess core 20. The tensile member 24 is a tensile body that allows the tension applied by the optical cable 1 to be not directly transmitted to the optical fiber core 10. The tensile member 24 is composed of, for example, a steel wire. The outer skin 30' is formed of, for example, a resin such as a polyethylene resin. The inner side of the outer skin 30 is a fixed ferrule that prevents the optical fiber core 10 from being detached from the groove core 20. The "optical fiber cores 10, 110", as shown in the second (a) and second (b) drawings, are coated with a cladding layer 14 on the periphery of the bare optical fiber 12' 112 which is a transmission path for transmitting light. , 11 4 after the fiber core wire. The bare optical fibers 12 and 112 are, for example, transmission paths for conveying light formed of a glass material and a plastic material having a diameter of 1 25 /z m. The coating layer 14 and 1 14 are, for example, an ultraviolet curable resin, a nylon, a polyene hydrocarbon, a polyfetone, a polyester, a polyurethane, a polyacrylic acid, or the like. The groove core 20' is provided with a plurality of grooves 22 at the periphery thereof at predetermined intervals. The groove 22' is arranged to be periodically overlapped with alternate s-shaped turns, and the z-ring is wound around -8-201142400, that is, arranged in a so-called SZ-shaped spiral shape. The groove 2 2 of the groove core 20 is an optical fiber core 10 in which three or more cores are stacked in a bundled state as shown in Fig. 1(a). The bundled optical fiber core 10, as shown in Fig. 3, is intermittently disposed in the longitudinal direction and the width direction of the optical fiber core 10 by n optical fiber cores 10, 1 〇 2 - 10, and 1 〇 η The spacer fixing portion 50 in the second direction is fixed so that the two-core optical fiber cores 10 adjacent to each other are formed. The spacer fixing portions 50 are disposed so as to be adjacent to each other in the width direction of the optical fiber core 10 with a distance therebetween. The spacer fixing portion 50, as shown in Fig. 3, is a strip-shaped member in which the adjacent two-core optical fiber cores 1 are formed and fixed. When the plurality of spacer fixing portions 50 are provided, the length of the optical fiber core 10 is set in a state where the position is shifted. Further, the spacer fixing portion 50 may be an optical fiber core 1 〇 which is fixed to the adjacent two cores from the upper and lower sides by an ultraviolet curable resin or a thermoplastic resin. The optical fiber core 10 fixed by the spacer fixing portion 50 has an identification line 60 wound around every four cores as shown in Fig. 4. The identification line 60 is for ensuring that a colored line for identifying the core line identification of the desired optical fiber core 10 can be identified from the plurality of optical fiber cores 10. The number of cores of the optical fiber core 10 tied by the identification line 60 is not limited to four, and the identification line may be tied every 20 to 40. The identification line 60 for the optical fiber core 1 〇 binding and identification can also be replaced with the identification tape 62 shown in Fig. 5. If the identification tape 62 is used, it can be recognized not only by color but also by dot matrix printing or the like. In the optical cable 1 according to the first embodiment, as shown in the first (a) diagram, when a plurality of optical fiber cores 1 are to be accommodated in the recess 2 2, the bundled optical fiber core 10 is in the recess 22 It needs to be able to rotate, so when designing the ruler 201142400 inch, it is necessary to first draw the bundled fiber core 1 〇 to form the circumcircle 40 when the number of cores is bundled, and then form the groove 22 into the circumscribed circle. Sizes above 40. The diameter d3 of the circumscribed circle 40 formed by the bundled optical fiber core 10 is shown in Fig. 2(a). The diameter d3 of the circumscribed circle 40 formed by the bundled optical fiber core 10 is the state in which the optical fiber core 10 is in a state where the optical fiber core 10 is in a dense state. When the optical fiber core 10 is housed in the recess 22, since the plurality of optical fiber cores 10 can be moved in a single core unit, the optical fiber core 1 can move within the recess 22 even in the shape of a groove of any shape. Therefore, the size of the recess 22 can be made as long as it is formed so as to be able to assemble the groove area of the optical fiber core 1〇, so that the recess 22 can be made thinner. On the other hand, in the prior optical cable 100, as shown in FIG. 1(b), after the plurality of optical fiber cores 110 are arranged side by side, the optical fiber ribbon Π 1 coated with the optical fiber core no is packaged in the groove. At 122 o'clock, since the optical fiber ribbon 111 needs to be rotatable in the groove 122, when designing the size of the groove 122, it is necessary to first describe the optical fiber ribbon 111 to require the number of stacked circumscribed circles 140, and then The size 122 of the groove is formed to a size above the circumscribed circle 140. The diameter d4 of the circumscribed circle 140 formed by the optical fiber ribbon Π1 laminated according to the required number of sheets, as shown in the second (b) diagram, is formed simply by laminating the optical fiber ribbon 1 1 The diameter d3 of the circumscribed circle 40 formed by the optical fiber core 1 还 is also large. As described above, the optical fiber cable 1 according to the first embodiment can reduce the diameter of the circumscribed circle 40 formed by the bundled optical fiber core 1 〇. Therefore, the groove 22 can be designed to be relatively larger than -10-201142400. Small, the groove core 20 can be made thinner. Further, in the optical cable 1 according to the first embodiment, since the groove core 20 can be made thinner, the diameter 6 of the optical cable 1 can be made smaller than the diameter d2 of the previous optical cable 100. In the optical cable 1 according to the first embodiment, when the spacer fixing portion 50 is provided in plural, the interval fixing portion 50 is intermittently provided in the longitudinal direction and the width direction of the optical fiber core 10, so that the interval fixing portion can be prevented. The 50 overlap enables the bundle of optical fibers 1〇 to be bundled. As a result, the groove core 20 and the optical cable 1 are reduced in diameter. In the optical cable 1 according to the first embodiment, since the optical fiber core 10 is used, the welding time can be reduced as compared with the optical fiber using the optical fiber, and therefore the workability can be improved. Here, in the embodiment, the relative enthalpy of the size and the like of the optical cable 1 according to the first embodiment and the previous optical cable 100 are compared. The comparison table is disclosed in Table 1. The optical cable is a 100-core type optical cable in which the optical fiber core 10 of the 100-core optical fiber 10 is accommodated in the groove 22 of the optical cable 1 according to the first embodiment and the groove 122 of the previous optical cable 100. [Table 1] Construction of the previous optical cable The outer diameter of the optical cable groove of the present invention is 1 0.80 Optical cable outer diameter 1 0.86 Optical cable quality 1 0.77 Groove width 1 0.81 Groove depth 1 0.83 Characteristic 〇〇-11 - 201142400 According to the results of Table 1, concave The optical cable 1 according to the first embodiment is reduced by about 20% from the previous optical cable 1 by the outer diameter of the slot core, the outer diameter of the cable, the quality of the cable, the width of the groove, and the depth of the groove. In addition, the characteristics of the optical fiber, such as the transmission characteristics and the waterproof characteristics, can satisfy the characteristic conditions of both the optical cable 1 and the previous optical cable 100 according to the first embodiment. In other words, according to the results of Table 1, the optical cable 1 according to the first embodiment can satisfy the characteristic conditions and can be made thinner. (Second Embodiment) As shown in Fig. 6, the optical fiber cable 1 according to the second embodiment of the present invention differs from the optical cable 1 according to the first embodiment in that the three-core optical fiber core 10 is twisted into a spiral shape. Other configurations are substantially the same as those of the first embodiment, and thus the duplicated description of the same configuration is omitted. The optical core 1 〇 is fixed by the spacer fixing portion 50 in a state of being twisted into a spiral shape. The optical fiber core 10 twisted into a spiral shape is illustrated as a three-core core in Fig. 6, but it is not limited to three cores, and may be three or more cores. The twisted optical fiber core 1〇, as shown in Fig. 6, may be twisted in the same direction in the longitudinal direction, but may also include an untwisted portion. The optical cable 1 according to the second embodiment of the above configuration is also capable of obtaining the same effects as those of the optical cable according to the first embodiment. Further, according to the optical cable 1 according to the second embodiment, the optical fiber core 1 is twisted into a spiral shape, so that the optical fiber core 10 can be made denser and 12-201142400, and the bundled optical fiber core 1 can be made. 〇 More refined. (Third Embodiment) An optical cable 1 according to a third embodiment of the present invention is different from that of Fig. 7 in that the single-core optical fiber core 10 is changed to a two-core optical fiber core. Core tape core 1 1. The other configurations are substantially the same as those of the above-described embodiment, and thus the duplicated description of the same configuration is omitted. The two-core cored wire 1 1 is configured such that an optical fiber core 10 is arranged, and two optical fiber cores 10 are connected from above to the other by an ultraviolet curable resin or a thermoplastic resin. The optical cable 1 according to the third embodiment of the above configuration can also obtain the same effects as those of the optical cable 1 according to the first embodiment. Further, according to the optical cable 1 according to the third embodiment, the two-core cored wire 1 formed of the two-core optical fiber core 1 is used, so that the entire batch connection characteristics and the identification are excellent. Next, when the recess 22 is to be accommodated, the 2-core core wire 1 1 can be bundled, so that the recess core 2 and the diameter of the optical cable 1 can be facilitated. (Other Embodiments) As described above, the present invention has been described in terms of the embodiments. However, it should be understood that the description and drawings of the disclosure are not intended to limit the invention. It is clear that the practitioner is able to carry out a wide variety of embodiments, embodiments and techniques of operation in accordance with the disclosure. For example, in the first embodiment, the groove 2 2 ' is described by the bottom surface as a curved surface -13-201142400, but it is not limited to the curved surface' and may be a flat surface. Similarly, the side surface of the recess 22 is illustrated as a plane 'but it may be a curved surface. In the first embodiment, the 100-core optical fiber cable in which the optical fiber core 10 of the ten-core core is stored is described. However, the present invention is not limited thereto, and may be applied to a 200-core type or a 300-core type. Other optical cables 1 of the number of optical fiber cores 10. As described above, the reader should understand that the present invention includes various embodiments and the like which are not described herein. Therefore, the invention is defined by the specifics of the invention disclosed by the appended claims. [Industrial Applicability] The optical cable of the present invention can be used in the optical communication industry and the measurement equipment manufacturing industry, etc., and the first embodiment of the present invention is a slot type optical cable according to the first embodiment of the present invention. Sectional view, Figure 1 (b) is a cross-sectional view of the previous slotted cable. Fig. 2(a) is a cross-sectional view of a bundled optical fiber according to a third embodiment of the present invention, and Fig. 2(b) is a cross-sectional view of a prior laminated optical fiber ribbon 〇 Fig. 3 is a view showing the present invention! A perspective view of an embodiment of the optical fiber core and the spacer fixing portion. Fig. 4 is a perspective view showing an optical fiber core and a recognition line according to the first embodiment of the present invention. -14- 201142400 Fig. 5 is a perspective view showing an optical fiber core and a recognition tape according to the first embodiment of the present invention. Fig. 6 is a perspective view showing an optical fiber core according to a second embodiment of the present invention. Fig. 7 is a perspective view showing an optical fiber core (2-core cored wire) according to a third embodiment of the present invention. Fig. 8 is a cross-sectional view showing a groove portion of the prior grooved optical cable. [Description of main component symbols] 1, 1 00: Optical cable 1 0, 1 1 0 : Optical fiber core 1 1 : 2 core with core wire 1 1 1 : Optical fiber ribbon 12, 1 12: bare optical fiber 1 4, 1 1 4 : package Cladding 2 0, 1 2 0 : groove core 22, 122: groove 2 4, 1 2 4 : tensile member 3 0, 1 3 0 : outer skin 4 0, 1 4 0 : circumscribed circle 50: interval Fixing part 6〇: identification line 62: identification band 1 0 1 ' 1 〇 2 ' 1 〇 3 ' 1 〇 4 ' ......: optical fiber core -15- 201142400 10n.3, 10n.2, 10η. , 10n : optical fiber core wire d ^ : diameter d2 of the optical cable 1 : diameter d3 of the optical cable 100 : diameter d4 of the circumscribed circle 40 : diameter of the circumscribed circle 140 - 16 -