201250312 六、發明說明： 【發明所屬之技術領域】 本發明係關於使用光準直器之光連接器。 【先前技術】 在使用光連接器將光纖與各種光裝置結合之情形中，已 提案有使用透鏡提高結合效率之技術且應用使單數或複數 個光纖結合之光準直器。 如此光準直器中，需要進行光纖之端面與準直透鏡之定 位。先前，作為進行如此光纖之端面與準直透鏡之定位方 法’已知有將其他零件之間隔件插入於保持構件内之方法 (例如參照專利文獻1 )。 先行技術文獻 專利文獻 專利文獻1:曰本特開2007-241094號公報 【發明内容】 發明所欲解決之問題 在結合光纖與各種光裝置之用途下使用之光連接器中， 要求於形狀面上其尺寸較小、於機器面上即使重複插拔亦 可維持光纖與準直透鏡之位置關係。 但，如專利文獻1所揭示之技術，若於光纖之端面與準 直透鏡之定位上使用其他零件，則有零件件數增加，且组 裝步驟變複雜之問題…將其他零件插入保持構件内之 ::上，光連接器之尺寸越小越困難，有該作業所需要之 成本上升之問題。 I63078.doc 201250312 本發明係鑑於上述之點而完成者，纟目的係提供—種無 需煩雜之組裝步驟，可使準直透鏡與光纖高精度定位之光 連接器。 解決問題之技術手段 本發明之光連接器之特徵在於包含：金屬製保持構件， 其於一端形成有收納準直透鏡之收納部，於另一端形成有 使光纖插入之插入孔；樹脂接頭，其於一端形成有使前述 保持構件插人之第1插A孔，於另—端形成有使前述光纖 插入之第2插入孔；及夾頭，其包含前述光纖之固持部， 且插入前述樹脂接頭之通孔中；且，使前述準直透鏡及前 述光纖之端面之至少一者與形成於前述保持構件之收納部 附近之凹陷部抵接而進行定位，並藉由插入前述通孔之前 述夾頭向半徑方向内側彈性變形，藉此以前述固持部固定 前述光纖。 根據上述光連接器，使準直透鏡及光纖之至少一者與設 於保持構件之凹陷部抵接而定位，因此可以凹陷部為基準 定位準直透鏡及/或光纖，因此與如先前般將其他構件插 入保持構件内之情形相比可提高作業效率、可抑制成本上 升’且可簡單地進行準直透鏡與光纖之定位。又，藉由插 入樹脂接頭之通孔之夾頭.向半徑方向内側彈性變形而以固 持部固定光纖，因此可強固地固定經定位之光纖。其妗 果’無需煩雜之組裝步驟，可使準直透鏡與光纖高精度對 齊。 例如，於上述光連接器中，4量前述接頭具有將相對於 163078.doc • 4 · 201250312 前述通孔之插人方向之前端部設成比後端部小徑之圓筒形 狀’且沿著前述插人方向設置縫隙，藉由與設於前述通孔 之内壁之錐形面抵接而向半徑方向内側彈性變形，藉此以 前述固持部固定前述光纖。此情形時，僅 孔插入即可使失頭變形，且伴隨於此可以固持 纖，因此可簡單組裝光連接器。 上述光連接器中，前述夾頭具有以彈性材料形成之圓筒 形狀’藉由與前述通孔之内壁抵接而向半徑方向内侧彈性 變形，藉此柯以前述固持部固定前述光纖。^清形時， 僅對樹脂接頭之通孔插入即可使夾頭變形，且伴隨於此可 以固持部固定光纖，因此可簡單組裝光連接器。尤其，由 於是以彈性材料形成夾頭，因此無需設置用以引起彈性變 形之縫隙等之構成，故可降低夾頭之製造所需要之成本。 又，上述光連接器中，前述夾頭具有在相對於前述通孔 之插入方向上連結大徑部與小徑部而設之圓筒形狀，且沿 著前述插入方向設置縫隙，藉由前述大徑部之外表面與前 述通孔之内壁抵接而向半徑方向内側彈性變形，藉此亦可 以設於前述小徑部之内面之前述固持部固定前述光纖。此 情形時’僅對樹脂接頭之通孔插入即可使夾頭變形，且伴 隨於此可以固持部固定光纖，因此可簡單組裝光連接器。 又，由於可以與爻與樹脂接頭之通孔之抵接之大徑部不同 之小徑部之内面所設之固持部保持光纖，因此可防止過度 之按壓力施加於光纖，而可不損傷光纖地將其固定。 再者，上述光連接器中，前述接頭具有在相對於前述通 163078.doc 201250312 孔之插入方向上連結大徑部與小徑部而設之圓筒形狀，且 沿著前述插入方向於前述大徑部設置複數個縫隙，藉由前 述大徑部之外表面與前述通孔之内壁抵接而向半徑方向内 側彈性變形’藉此亦可以設於前述大徑部之内面之前述固 持部固定前述光纖。此情形時，僅對樹脂接頭之通孔插入 即可使夾頭變形，且伴隨於此可以固持部固定光纖，因此 可簡單組裝光連接器。又，於大徑部設有複數個縫隙，因 此大徑部向半徑方向内側彈性變形時，可對光纖均等地施 力而保持光纖’因此可以穩定狀態固定光纖。 上述光連接器中，亦可具備與前述夾頭之端部接觸而固 定前述夾頭之按壓具。此情形時，藉由以按壓具固定夾 頭，可防止夾頭之位置偏差，故可確實固定光纖。 上述光連接器中，較佳具備覆蓋前述第2插入孔及從前 述第2插入孔露出之前述光纖之罩。此情形時，藉由以罩 固定夾頭及光纖，可防止夾頭及光纖之位置偏差，故可確 實固定光纖。 上述光連接器中，較佳於前述罩之覆蓋前述光纖之部分 設有複數個凸部。此情形時，可以罩之一部分保持護套， 因此可不增加零件件數而有效固定被覆光纖之護套。 上述光連接器中’較佳於前述樹脂接頭之外周，設置與 裝置連接時與前述裝置側之扣合部扣合之被扣合部。此情 形時，藉由設於樹脂接頭之一部分之被扣合部，可防止插 入裝置之光連接器之位置偏差，因此可使光連接器與裝置 之接觸良好。 163078.doc 201250312 上述光連接器中’較佳於前述樹脂接頭之外周，設置突 出成可對裝置插人至連接位置之環狀之凸緣。此情形時， 由於藉由凸緣可對裝置插人至連接位置，因此可將光連接 器定位於裝置之特定位置β 發明之效果 根據本發明’無需煩雜之組裝步驟，可使準直透鏡與光 纖高精度定位。 【實施方式】 以下’針對本發明之實施形態參照附圖詳細說明。 首先’針對將本發明之光連接器連接於裝置之狀態進行 說明。圖1係模式化顯示將本發明之光連接器連接於裝置 之狀態之側剖面圖。另，圖1中’為說明方便而針對具備 受光/發光元件之裝置進行說明，但對於裝置之構成不限 於此，可適當變更。 如圖1所示’連接本發明之光連接器10之裝置1〇〇構成為 將受光/發光元件101配置於殼體}〇2之内部，且於該受光/ 發光元件101之光軸上配置由未圖示之支持機構予以支持 之聚光透鏡103及斜研磨面104。又，於裝置1〇〇之殼體1〇2 之側面設有插入光連接器10之開口部105。 裝置100中，從發光元件101出射之雷射光經由聚光透鏡 103藉由斜研磨面104反射，而被導入開口部1〇5。然後， 藉由斜研磨面104反射之光藉由光連接器1〇之準直透鏡12 聚光’入射至光纖13。然後’如此入射之光於光纖13内傳 播。另，圖1中以點線顯示從發光元件1 〇 1出射之雷射光之 163078.doc 201250312 光路。 又，裝置100中，於光纖13中傳播之光經由準直透鏡12 而校準。然後，從光纖13出射之雷射光藉由斜研磨面1〇4 反射，經由聚光透鏡103而被導入受光元件101。另，圖i 中以點線顯示從光纖13出射之雷射光之光路。 本實施形態之裝置100中，設計為當光連接器10插入至 殼體102内之特定位置時，於受光/發光元件101與光纖13 間傳播之雷射光可經由聚光透鏡103及斜研磨面1 〇4而適當 出射入射。以下，針對連接於如此之裝置1〇〇之本發明之 光連接器10之構成進行說明。 (第1實施形態） 圖2係本發明之第1實施形態之光連接器1 〇之側剖面圖。 如圖2所示，光連接器1〇構成為包含：保持器n，其作為 具有大致圓筒形狀之保持構件；準直透鏡12，其被保持於 該保持器11之一端部；光纖1 3 ’其從設於保持器11之另一 端部之插入孔11 a插入；樹脂接頭14，其保持保持器11及 光纖13;夾頭15,其固定光纖13;罩16，其覆蓋樹脂接頭 14及夾頭15;護套17,其被覆光纖π;及金屬構件18，其 具有用以固定護套17之大致圓筒形狀。另，第丨實施形態 之光連接器10中，較佳插入塑料光纖作為光纖13。 保持器11、準直透鏡12及光纖13構成光連接器1〇a。關 於該光連接器10a之詳情如後述。 圖3係樹脂接頭4之側剖面圖。如圖3所示，樹脂接頭14 具有大致圓筒形狀，於沿著樹脂接頭14之長度方向之通孔 I63078.doc 201250312 之一端設有插入保持器11之插入孔14a，於另一端設有插 入光纖13之開口部14b »另，插入孔14a構成第1插入孔， 開口部14b構成第2插入孔》又，於樹脂接頭14之中央附近 設有凸緣14c。樹脂接頭14中，將凸緣14c至插入孔14a之 部分稱作第1圓筒部14d，將凸緣14c至開口部14b之部分稱 作第2圓筒部14e。第1圓筒部14d中，於中央設置槽狀之被 扣合部14f。又，第1圓筒部I4d比第2圓筒部14e小徑地構 成。 又，於樹脂接頭14之通孔中，在凸緣部14c與第2圓筒部 14e之交界設有定位部I4g ’在第2圓筒部14e中靠近凸緣 14c之部分設有固持區域I4h，在靠近開關部i4b之部分設 有錐形區域14i。此處，以定位部14g至插入孔14a之内徑 與保持器11之外徑成大致同徑、固持區域14h之内徑與光 纖13之外徑成大致同徑之方式構成。錐形區域i4i之内徑 構成為從開口部14b側越往凸緣14c側則越小之錐形狀。 又，於錐形區域14i之開口部14b附近，沿著其内周設有切 口部 14j。 凸緣14c之外徑構成為大於連接光連接器10之裝置1〇〇中 之開口部105之内徑。因此’將光連接器1〇插入裝置1〇〇 時，通常插入至裝置100内直至凸緣14c為止，而可於殼體 102内之特定位置定位光連接器1〇。又，設置樹脂接頭μ 之被扣合部14f ’是為了與設於裝置1〇〇之開口部ι〇5之内 周之扣合部105a唾合（參照圖1)，藉此防止插入裝置1〇〇之 光連接器10之位置偏差’使光連接器1〇與裝置之連接 163078.doc 201250312 圖4係夾頭15之（a)立體圖，（b)侧剖面圖。如圖4所示， 夾頭15具有相對於樹脂接頭14之通孔之錐形區域i4i之插 入方向之前端部（圖4(a)之左下側）設為比後端部（圖4(a)之 右上側）小徑之圓筒形狀’且沿著相對於錐形區域l4i之插 入方向設有縫隙15a。又，夾頭15在相對於錐形區域14i之 插入方向之後端附近之外周設有卡合部15b，於後端部之 外周設有凸緣15c。又’於夾頭15之前端部側之内周設有 光纖固持部15 d。該光纖固持部15 d之内徑以與光纖13之外 徑成大致同徑之方式構成。夾頭15只要結構上展現彈性即 可，作為材料，可使用橡膠 '彈性體、金屬等。 罩16係用以防止插入樹脂接頭14内之夾頭15外露而設， 如圖2所示’其覆蓋樹脂接頭14之第2圓筒部14e及開口部 14b以及從樹脂接頭14之開口部14b露出之光纖13之一部 分。安裝有罩16之第2圓筒部14e與凸緣14c大致同徑。在 覆蓋罩16之光纖13部分之外周，構成將複數個凸部16&間 隔而設之護套保持部16b。 護套17例如以彈性素材或抗張力纖維形成，沿著從罩j 6 之護套保持部16b乃至從罩16露出之光纖13之長度方向， 覆蓋整個光纖13。護套17與光纖13不密接，而空出間隙安 裝。因此’即使護套17被拉扯亦會不對光纖13施力，可防 止光纖13之斷線。 金屬構件18於長度方向形成z字狀之縫隙《金屬構件18 覆蓋安裝於罩16之護套保持部16b之護套17而固定。 163078.doc •10· 201250312 接者，針對本發明之第1實施形態之光連接器ίο所使用 之由保持器11、準直透鏡12及光纖13構成之光準直器l〇a 詳細說明。圖5係本發明之第!實施形態之光準直器1〇&之 側視圖圖6係圖5所示之A-A箭頭方向剖面圖。 保持器11例如以不鏽鋼等金屬材料形成。尤其由加工性 而a，保持器π以沃斯田鐵系不鏽鋼形成較佳。如圖6所 示，於保持器11之準直透鏡丨2側之端部設有開口部丨丨 於該開口部lib之内側設有收納準直透鏡12之收納部丨lc。 為防止準直透鏡12表面之損傷，該收納部丨丨c設成可將準 直透鏡12全體收納於其内側之尺寸，且構成為可將準直透 鏡12壓入其中。又，於保持器丨丨内部設有比光纖13之外徑 稍大徑之貫通孔lid。該貫通孔lid與插入孔iia連通，且 與收納部1 lc連通而設。再者，於保持器丨丨上設有從其外 周部藉由工具等實施按壓加工而形成之複數個凹陷部 1 le。該等凹陷部lie設於收納部1卜與貫通孔丨ld之間，用 於準直透鏡12及光纖13之定位，詳情如後述。 準直透鏡12例如以玻璃材料形成，以具有球形狀之球面 鏡構成。如圖6所示，準直透鏡12在收納於保持器11之收 納部11c内之狀態下，以面對插入貫通孔lid之光纖13之前 端部之方式配置。 光纖13由貫通其中心而設之芯材13a、被覆該芯材13a之 包層13b、被覆並強化該包層13b之強化層13c構成。與光 纖13之準直透鏡12對向之端面上，芯材13a、包層13b及強 化層13c配置於同一平面上。即，與準直透鏡12對向之端 163078.doc 201250312 面上，芯材13a、包層13b及強化層13c對齊配置。 又，光纖13經由插入孔11a而插入貫通孔lid，以其前端 部在準直透鏡12附近與其球面對向之方式配置之狀態下固 定。 第1實施形態之光準直器10a中，光纖13例如以漸變折射 率（GI)型光纖構成，以折射率在與光纖軸垂直之剖面上連 續變化之方式構成。又，芯材13a及包層13b例如以將C-H 鍵合之Η置換成F之全氟置換光學樹脂構成《如此，以全氟 置換光學樹脂構成光纖13，且以GI型光纖構成，藉此可實 現高速且大容量通信。 具有如此構成之第1實施形態之光準直器10a，為抑制成 本上升，且簡便地進行準直透鏡12與光纖13之定位，而利 用設於保持器11之凹陷部lie。具體言之，藉由使準直透 鏡12及光纖13之一部分與設於保持器11之凹陷部iie抵接 而進行定位，藉此無需採用該等定位用間隔件等之構成， 可抑制成本上升，且簡便地進行準直透鏡12與光纖13之定 位。 此處，針對第1實施形態之光準直器l〇a之保持器11中之 準直透鏡12及光纖13之定位方法，使用圖7說明。圖7係圖 6所示之2點鏈線B内之放大圖》如圖7所示，準直透鏡12之 一部分與凹陷部lie中與準直透鏡12對向之部分抵接，另 一方面，構成光纖13之芯材13a以外之包層13b或強化層 13c、或包層13b及強化層13c之一部分與凹陷部lie中對向 於光纖13之部分抵接《如此在抵接狀態下，準直透鏡12及 163078.doc -12- 201250312 光纖13分別定位於保持器11之特定位置。 如圖7所示，凹陷部lle相對於與光纖13之插入方向正交 之平面（例如與圖7所示之光纖13之端面平行配置，且通過 凹陷部lie中心之平面c)，對向於準直透鏡12部分之角度 與對向於光纖13部分之角度設成不同角度。如此凹陷部 1 le例如係藉由使用前端部之形狀不同之錐形工具實施按 壓加工而設《藉由以如此工具進行按壓加工，以該按壓加 工時之中心轴為基準，使凹陷部lle對向於準直透鏡12部 分之角度與對向於光纖13部分之角度成不同角度，從而可 有效定位形狀不同之準直透鏡12與光纖13。 又’第1實施形態之光準直器l〇a中，如此之凹陷部ne 在保持器11之同一周上設有複數個（本實施形態中為3個）。 對同一周上之凹陷部lie之形成，例如考慮藉由上述前端 形狀不同之工具從保持器11之外周同時實施按壓加工。如 此’藉由於同一周上設置複數個凹陷部lle，可在各複數 個位置使準直透鏡12及光纖13抵接，因此可更高精度地進 行準直透鏡12及光纖13之定位。 凹陷部lie之與準直透鏡12對向之部分構成傾斜面iiei。 該傾斜面11以以相對於與圓7中箭頭所示之光纖13之插入 方向正交之平面（例如圖7所示之與光纖13之端面平行配 置’且通過凹陷部lie之基端部之平面D)之角度91成〇。以上 45。以下之方式設置》如此將準直透鏡12側之傾斜面丨丨〜之 角度Θ丨相對於與光纖13之插入方向正交之平面d設成〇。以 上45。以下，藉此可以支持準直透鏡12之光纖13側之一部 163078.doc •13· 201250312 分之狀態定位，因此可提高準直透鏡12之位置精度。 另一方面，凹陷部lle之與光纖13對向之部分構成傾斜 面。傾斜面Uh以相對於與光纖13之插入方向正交之 平面（例如圖7所示之與光纖13之端面平行配置之平面E)之 角度Θ2成0。以上20。以下之方式設置。如此將傾斜面之 角度相對於平面E設成0。以上20。以下，而如上述，光纖13 在以怒材13a、包層13b及強化層13c配置於同一平面上之 光纖構成之情形中’藉由使該光纖13之端面與凹陷部Ue 抵接’可容易確保該等之位置精度。 如上說明’第1實施形態之光準直器10a中，使準直透鏡 12之一部分及光纖13之一部分與設於保持器丨丨之凹陷部 lie抵接而定位’因此可以凹陷部lie為基準而定位準直透 鏡12及光纖13 ’因此如先前般將其他零件插入保持器11之 情形相比，可提高作業效率，可抑制成本上升，且可簡軍 地進行準直透鏡12與光纖13之定位。 接著’針對第1實施形態之光連接器1〇之組裝步驟，基 於圖8〜圖12說明。圖8~圖12係依次顯示光連接器之組裝 步驟之說明圖。光連接器10之組裝步驟包含：將保持器11 壓入樹脂接頭14之步驟（a);插入光纖13之步驟（b);插入 夾頭15之步驟（c);安裝罩16之步驟（d);安敦護套17之步 驟（e);及安裝金屬構件18之步驟（f)。以下針對各步驟詳 細說明8 [步驟（a)] 首先如圖8所示’從樹脂接頭14之插入孔Ma壓入保持器 163078.doc • 14· 201250312 11。於保持器11之收納部11C中，在與凹陷部丨le抵接之狀 態下定位並收納準直透鏡12。從插入孔14a壓入之保持器 11在保持器11之插入孔11&與定位部14g抵接時靜止。此 時’保持器11成為定位於特定位置之狀態。 [步驟（b)] 接著，如圖9所示，從樹脂接頭14之開口部14b插入光纖 13。光纖13受樹脂接頭13之内徑引導而到達保持器u之插 入孔1 la，且受保持器丨丨之内徑引導而到達凹陷部丨u。當 光纖13與凹陷部Ue抵接時插入作業結束。此時，光纖13 成為定位於特定位置之狀態。 [步驟（c)] 接著’如圖1 0所示’將夾頭1 5從小徑之前端部侧插入並 壓入樹脂接頭14之開口部14b。夾頭15在夾頭15之前端部 與樹脂接頭14之錐形區域14i及固持區域14h之交界抵接時 靜止。此時’夾頭15之凸緣15c與設於樹脂接頭14之錐形 區域14i之切口部14j扣合，其端部未從樹脂接頭14之端面 突出。又，夾頭15之卡合部15b使樹脂接頭14之内周面彈 性變形而與樹脂接頭14之内周面扣合。藉此，夾頭15不易 .從樹脂接頭14脫落。夾頭15之縫隙15a隨著進入樹脂接頭 14之錐形區域14i而束緊，夾頭15向半徑方向内側彈性變 形，藉此於夾頭15之光纖固持部15d將光纖13固持固定。 [步驟（d)] 接著，如圖11所示，以覆蓋樹脂接頭14之第2圓筒部14e 及開口部14b以及從開口部14b露出之光纖13之一部分之方 163078.doc 15 201250312 式安裝罩16。藉由以罩16固定夾頭15及光纖13，而可防止 夾頭15及光連接器13之位置偏差，可確實固定光纖η。 [步驟（e)] 接著，如圖12所示，沿著罩16之護套保持部16b乃至從 罩16露出之光纖13之長度方向，以覆蓋整個光纖13之方式 安裝護套17。護套17藉由設於罩16之護套保持部16b之凸 部16a而固定於護套保持部16b，因此無需增加零件件數即 可有效固定被覆光纖13之護套17。 [步驟⑴] 最後，以覆蓋安裝於罩16之護套保持部16b之護套17之 方式女裝金屬構件18 ’從而獲得圖2所示之光連接器。 金屬構件18可藉由將金屬構件丨8之縫隙大幅打開並夾入罩 16及護套17，其後閉合金屬構件18之縫隙而安裝。金屬構 件18係用以使罩16及護套π之固定更確實者而安裝。惟亦 可構成為藉由以接合劑將罩16自身接合於樹脂接頭14或光 纖13而固定罩16 » 如上說明，第1實施形態之光連接器1〇中，使準直透鏡 12之一部分及光纖13之一部分與設於保持器丨丨之凹陷部 lie抵接而定位，因此可以凹陷部lle為基準定位準直透鏡 12及光纖13,因此與如先前般將其他零件插入保持器丨丨内 之情形相比，可提高作業效率、可抑製成本上升，且簡單 地進行準直透鏡12與光纖13之定位。又，第1實施形態之 光連接器10中，僅插入樹脂接頭14之通孔即可使夾頭15變 形，伴隨於此可以光纖固持部15d固定光纖13，因此可簡 I63078.doc 201250312 單地進行組裝作業。 例如使用光纖進行機器間或機器内之大容量通信所使用 之光連接器中’如先前’在光纖與準直透鏡之定位上形成 隔板（間隔件部）之情形中’需要對以金屬材料等構成之保 持構件（保持器）實施切削加工等加工處理。但上述用途所 使用之光連接器之保持構件中’由於其尺寸變小，因此切 削加工之加工精度下降，且伴隨加工處理之成本（例如因 產生尺寸不良所竹生之成本）顯著增加。相對於此，第1 實施形態之光連接器10之保持器11中，並非對保持構件即 保持器11實施切削加工而形成隔板（間隔件部），而是實施 塑性加工而形成凹陷部11 e ’因此可大幅降低伴隨加工處 理之成本。 又，第1實施形態之光連接器10中’藉由形成於保持器 11之凹陷部lie進行準直透鏡12與光纖13之定位，另一方 面’藉由形成於樹脂接頭14之固持區域i4h及形成於夹頭 15之光纖固持部i5d而固定光纖π。此情形時，光纖13在 定位狀態下被強固固定β因此，使用光纖13進行機器間或 機器内之大容量通信之用途下，即時進行重複插拔之情形 中’亦可維持光纖Π與準直透鏡12之位置關係。 另，以上說明中，針對使準直透鏡12之一部分及光纖13 之一部分與設於保持器丨丨之凹陷部lle抵接而進行準直透 鏡12與光纖13之定位之情形進行說明。但對於準直透鏡 與光纖13之定位方法不限於此，可適當變更。例如亦可不 使準直透鏡12及光纖13兩者與凹陷部抵接，而使準直透鏡 163078.doc 201250312 12或光纖13之一者抵接，至於另一者則在凹陷部u e以外 之保持器11之部分進行定位。惟此情形時’係以用以定位 另一者之部分與凹陷部11 e之關設計成一定之位置關係為 前提。即，本發明之光連接器10中，亦包含使準直透鏡12 或光纖13之一者與凹陷部Ue抵接之構想。 (第2實施形態） 針對與第1實施形態所示之光連接器1 〇不同結構之光連 接器20進行說明。光連接器20中，樹脂接頭24之一部分結 構及夾頭25之結構與光連接器1〇不同。以下針對第2實施 形態之光連接器20，基於圖13、圖14進行說明。圖13係第 2實施形態之光連接器20之側剖面圖。圖14係失頭25之（a) 立體圖，（b)側剖面圖。另，第2實施形態中，對於與第1實 施形態之光連接器10共通之構成附加同一符號，省略其說 明。 於樹脂接頭24之内周，於第2圓筒部i4e中靠近凸緣14c 之部分設有固持區域14h，於靠近14b之部分設有筒部 24a。筒部24a之内徑構成為從開口部Mb側至固持區域Mh 相等。如此，樹脂接頭14由於為簡單結構，因此可以低成 本製作。 如圖14所示，夾頭25具有以彈性材料形成之圓筒形狀。 另，作為彈性材料，較佳為橡膠、彈性體❶夾頭25之外徑 為從中間部越向相對於樹脂接頭24之通孔之筒部24a之插 入方向之前端部25a進入越小徑之圓錐狀，從中間部起， 後端部25b與樹脂接頭24之筒部24a之内徑大致構成為同 163078.doc -18- 201250312 么。又，於夹頭25之前端部側内周，設有内徑與光纖I]之 外徑成大致同徑之光纖固持部25c。 接著，針對第2實施形態之光連接器2〇之組裝步驟進行 說明。光連接器20之組裝步驟與第！實施形態之光連接器 10之組裝步驟中，[步驟（b)]及[步驟（c)]不同。 光連接器20之組裝步驟中，將保持器i丨定位於樹脂接頭 24内後’將固定有夾頭25之光纖13從樹脂接頭24之開口部 14b插入。光纖13受樹脂接頭24之内徑引導而到達保持器 11之插入孔1 la，且受保持器11之内徑引導而到達凹陷部 lie。當光纖13與凹陷部lie抵接時插入作業結束。又，夾 頭25與樹脂接頭24之筒部24a之内壁抵接，向半徑方向内 側彈性變形，藉此在夾頭25之光纖固持部25c中固持固定 光纖13。此時，光纖13成為定位於特定位置之狀態，夾頭 25成為藉由摩擦而保持在筒部24a内之狀態。如此僅插入 樹脂接頭24之通孔即可使夾頭25變形，且伴隨於此可以光 纖固持部25c固定光纖13，因此可簡單進行組裝作業。尤 其夾頭25係以彈性材料形成，因此無需設置用以引起彈性 變形之縫隙等之構成，故可降低夾頭25之製造所需之成 本。 第2實施形態之光連接器20中，藉由形成於保持器丨丨之 凹陷部lie進行準直透鏡12與光纖13之定位，另一方面， 藉由形成於樹脂接頭24之固持區域14h與形成於夾頭25之 光纖固持部25c固定光纖13。此情形時，光纖13在定位狀 態下被強固固定。因此，使用光纖13進行機器間或機器内 163078.doc 201250312 之大容量通信之用途下，即時進行重複插拔之情形中，亦 可維持光纖13與準直透鏡12之位置關係。 (第3實施形態） 針對與第1實施形態所示之光連接器10不同結構之光連 接器30進行說明。光連接器3〇在樹脂接頭34之一部分結構 及夾頭35之結構以及使用按壓具36之點與光連接器1〇不 同。以下針對第3實施形態之光連接器30，基於圖15、圖 16進行說明。圖15係第3實施形態之光連接器3〇之側剖面 圖。圖16係夾頭35之（a)立體圖，（b)側剖面圖。另，第3實 施形態中，針對與第1實施形態之光連接器1〇共通之構成 附加同一符號，省略其說明。 於樹脂接頭34之内周，於第2圓筒部14e中靠近凸緣14c 之部分設有固持區域14h，於第2圓筒部14e中靠近14b之部 分設有第2圓筒部34b ’在固持區域14h與第2圓筒部34b間 设有第1圓筒部34a。第1圓筒部34a之内徑大於固持區域 14h之内徑’且小於第2圓筒部34b之内徑而構成。又，於 第2圓筒部34b之開口部附近14b附近，沿著其内周設有切 口部 34c。 如圖16所示’夾頭35具備薄板彈簧之作用，且具有在相 對於樹脂接頭34之通孔之第1筒部34a之插入方向上連結大 徑部35a與小徑部35b而設之圓筒形狀，且沿著相對於第【 筒部34a之插入方向設有縫隙35c，於後端部設有凸緣 35d。大徑部35a之外徑與樹脂接頭34之第1筒部34a之内經 構成為大致相同徑。又，於小徑部35b之内周，設有由向 163078.doc -20- 201250312 半輕方向内側鼓出之鼓出部之光纖固持部35e。另，例如 爽頭35以板厚0.1 mm左右之薄板金屬構成，對該薄板金屬 實施彎曲加工而構成圓筒形狀。夾頭35以金屬形成較佳。 因為若將樹脂、橡膠、彈性體等作為材料，則會有強度不 足之情形之故。 按壓具36具有大致圓筒形狀’於一端設有凸緣36&。按 壓具36之外徑與樹脂接頭34之第2筒部34b之内徑構成為大 致同徑。 接著’針對第3實施形態之光連接器3〇之組裝步驟進行 說明。光連接器30之組裝步驟與第1實施形態之光連接器 1〇之組裝步驟中，[步驟（b)]及[步驟（c)]不同。 光連接器30之組裝步驟中’將保持器丨丨定位於樹脂34内 後’將固定有夾頭35之光纖13從樹脂接頭34之開口部14b 插入。夾頭35在凸緣35d與第1筒部3乜及第2筒部34b之交 界抵接時靜止。夾頭35之縫隙3 5c在第1筒部34a内被束 緊，夾頭35全體之徑縮小。光纖13受樹脂接頭34之内徑引 導而到達保持器11之插入孔11 a，且受保持器11之内徑引 導而到達凹陷部1 le。當光纖13與凹陷部Ue抵接時插入作 業結束。此時，光纖13成為定位於特定位置之狀態，夾頭 3 5在第1筒部34a内藉由朝向半徑方向外側之彈性賦能力而 成為向第1筒部34a之内壁撐開之狀態’其大徑部353之外 表面與第1筒部34a之内壁抵接且向半徑方向内側彈性變 形’藉此可以設於小徑部35b内面之光纖固持部35e固定光 纖13。如此’夾頭35以不與第1筒部34a之内壁接觸之光纖 163078.doc 201250312 固持部35e保持光纖13，因此可防止過度之按壓力施加於 光纖13，可不損傷光纖13地將其固定。另，夾頭35之凸緣 35d在第2筒部34b中，發揮朝向半徑方向外側之彈性賦能 力。 疋位光纖13後’從樹脂接頭34之開口 14b插入壓入按遂 具36。按壓具36當其端部與第1筒部34a及第2筒部3仆之交 界抵接時靜止，而固定夾頭35。按壓具36之凸緣36a與設 於樹脂接頭34之第2筒部34b之切口部34c扣合。另，按壓 具36亦可構成為非將夾頭35固定於第1筒部34a後壓入，而 是在定位光纖13時與夾頭35同樣地固定於光纖13，在該狀 態下壓入按壓具36。此情形時，藉由將按壓具36壓入第2 筒部34b ’夾頭35亦被壓入第1筒部34a，而可分別固定於 特定位置。 第3實施形態之光連接器3〇中，藉由形成於保持器^之 凹陷部Ue進行準直透鏡12與光纖13之定位，另一方面， 藉由形成於樹脂接頭34之固持區域14h及形成於夾頭35之 光纖固持部35e固定光纖13。此情形時，光纖13在定位狀 態下被強固固定。因此在使用光纖13進行機器間或機器内 之大容量通信之用途下，即使進行重複插拔之情形中，亦 可維持光纖13與準直透鏡12之位置關係。 (第4實施形態） 針對與第1實施形態所示之光連接器10不同結構之光連 接器40進行說明。光連接器40在樹脂接頭44之一部分結構 及夾頭45之結構以及使用按壓具36之點與光連接器1〇不 163078.doc -22- 201250312 同。以下針對第4實施形態之光連接器40，基於圖17、圖 18進行說明。圖丨7係第4實施形態之光連接器4〇之側剖面 圖，圖18係失頭45之（a)立體圖，（b)側視圖。另，第4實施 形態中’針對與第1實施形態之光連接器丨〇共通之構成附 加同一符號，省略其說明。 於樹脂接頭44之内周，於第2圓筒部14e中靠近凸緣14c 之部分設有固持區域14h ’於第2圓筒部14e中靠近開口部 14b之部分設有第2筒部44b，在固持區域14h與第2筒部44b 間設有第1筒部44a。第1筒部44a之内徑大於固持區域i4h 之内徑’且小於第2筒部44b之内徑而構成。又，第1筒部 44a與第2筒部44b之交界設有錐形部44c。再者，第2筒部 44b之開口部14b附近，沿著其内周設有切口部44d。 如圖18所示’夾頭45具有在相對於樹脂接頭44之通孔之 第1筒部44a及第2筒部44b之插入方向上連結小徑部45a與 大徑部45b而設之圓筒形狀’且沿著該插入方向於大徑部 45b設有複數個（本實施形態中為3個）縫隙45c ^小徑部45a 之外徑與第1筒部44a之内徑構成為大致同徑。又，大徑部 45b之外徑與第2筒部44b之内徑構成為大致相同徑。又， 於大徑部45b之内周設有光纖固持部45d。再者，於大徑部 45b之連結部分設有與樹脂接頭44之錐形部44c之形狀一致 之錐形部。 接著’針對第4實施形態之光連接器4〇之組裝步驟進行 說明。光連機器40之組裝步驟與第1實施形態之光連接器 10之組裝步驟中，[步驟（b)]及[步驟（c)]不同。 163078.doc •23- 201250312 光連接器40之組裝步驟中，將保持器丨丨定位於樹脂接頭 44内後，將固定有夾頭45之光纖13從樹脂接頭44之開口部 14b插入。此時’夾頭45將小徑部45a作為前端側插入樹脂 接頭44之通孔内’隨著進入通孔内而束緊縫隙45c。光纖 13受樹脂接頭44之内徑引導而到達保持器丨丨之插入孔 11 a ’且受保持器π之内徑引導而到達凹陷部11 e。當光纖 13與凹陷部lie抵接時插入作業結束◊此時，光纖13成為 定位於特定位置之狀態。又，夾頭45在大徑部45b之錐形 部與樹脂接頭44之錐形部44c抵接之狀態下，大徑部45b之 外表面與樹脂接頭44之通孔之第2筒部44b之内壁抵接而向 半徑方向内側彈性變形，藉此，以設於大徑部45b内面之 光纖固持部45d固持固定光纖13。如此，藉由於大徑部45b 設置複數個縫隙4 5 c，於大徑部4 5 b向半徑方向側彈性變形 時’可對光纖13均等地施力而保持光纖13，因此可以穩定 狀態固定光纖13。 定位光纖13後’從樹脂接頭44之開口部14b插入壓入按 壓具36。按壓具36在其端部與夾頭45之大徑部45b之端部 抵接時靜止，而固定夾頭45。按壓具36之凸緣36a與設於 樹脂接頭44之第2筒部44b之切口部44d扣合《另，按壓具 36亦可構成為非在固定夾頭45後壓入，而是在定位光纖13 時與夾頭45同樣地固定於光纖13，在該狀態下壓入按壓具 36。此情形時，藉由將按壓具36壓入第2筒部44b，夾頭45 亦被壓入第1筒部44a ’而可分別固定於特定位置。 第4實施形態之光連接器4〇中，藉由形成於保持器η之 I63078.doc •24- 201250312 凹陷部lie進行準直透鏡12與光纖13之定位，另一方面， 藉由形成於樹脂接頭44之固持區域i4h及形成於夾頭45之 光纖固持部45d固定光纖13。此情形時，光纖13在定位狀 態下被強固固定。因此，使用光纖丨3進行機器間或機器内 之大容量通信之用途下，即使進行重複插拔之情形中，亦 可維持光纖13與準直透鏡12之位置關係》 另’本發明不限於上述實施形態，可進行各種變更而實 施。上述實施.形態中，對於附圖所示之大小或形狀等不限 於此，在發揮本發明效果之範圍内可適當變更。此外，在 不脫離本發明目的之範圍内可適當變更實施。 上述實施形態中，將塑性光纖作為光纖13之一例進行說 明’但上述實施形態之光連接器1 〇所應用之光纖丨3不限於 塑性光纖。例如亦可應用玻璃纖維。 又，上述第1實施形態中，構成為於樹脂接頭14内僅插 入夾頭15而固定光纖13，但本發明不限於該構成。亦可構 成為於樹脂接頭14内插入夾頭15及按壓具而固定光纖13。 同樣的，第2實施形態中，不限於在樹脂接頭24内僅插入 夾頭25而固定光纖13之構成，亦可構成為在樹脂接頭24内 插入夾頭25及按壓具而固定光纖13。又，第3實施形態 中，不限於在樹脂接頭34内插入夾頭35及按壓具36而固定 光纖13之構成，亦可構成為在樹脂接頭34内僅插入夹頭35 而固定光纖13。同樣，第4實施形態中亦不限於在樹脂接 頭44内插入夾頭45及按壓具36而固定光纖13之構成，亦可 構成為在樹脂接頭44内僅插入夾頭45而固定光纖13。 I63078.doc -25- 201250312 本申請案係以2011年3月17曰申請之曰本專利2011-05 8813號為基礎，該案之整體内容以引用的方式併.入本文 中。 【圖式簡單說明】 圖1係模式化顯示將本發明之光連接器與裝置連接之狀 態之側剖面圖。 圖2係第1實施形態之光連接器之側剖面圖。 圖3係第1實施形態之樹脂接頭之側剖面圖。 圖4係第1實施形態之夾頭之（a)立體圖，（b)側剖面圖。 圖5係第1實施形態之光準直器之側視圖。 圖6係圖5所示之A-A剖面圖。 圖7係圖6所示之2點鏈線B内之放大圖。 圖8係顯示第1實施形態之光連接器之組裝步驟之說明 圖。 圖9係顯示第1實施形態之光連接器之組裝步驟之說明 圖。 圖10係顯示第1實施形態之光連接器之組裝步驟之說明 圖。 圖η係顯示第1實施形態之光連接器之組裝步驟之說曰月 圖。 圖12係顯示第1實施形態之光連接器之組裝步驟之說明 圖。 圖13係第2實施形態之光連接器之側剖面圖。 圖14係第2實施形態之夾頭之（a)立體圖，（b)側剖面圖。 163078.doc •26· 201250312 圖15係第3實施形態之光連接器之側刹面圖。 圖16係第3實施形態之夾頭之（a)立體圖，（b)側剖面圖。 圖1 7係第4實施形態之光連接器之側剖面圖。 圖18係第4實施形態之夾頭之（a)立體圖，（b)側剖面圖。 【主要元件符號說明】 10 光連接器 10a 光連接器 11 保持構件 11a 插入孔 lib 開口部 11c 收納部 lid 貫通孔 lie 凹陷部 lie, 傾斜面 lle2 傾斜面 12 準直透鏡 13 插入光纖 13a 芯材 13b 包層 13c 強化層 14 樹脂接頭 14a 插入孔 14b 開口部 14c 凸緣 163078.doc 201250312 14d 第1圓筒部 14e 第2圓筒部 14f 被扣合部 14g 定位部 14h 固持區域 14i 錐形區域 14j 切口部 15 夾頭 15a 縫隙 15b 卡合部 15c 凸緣 15d 光纖固持部 16 罩 16a 凸部 16b 護套保持部 17 護套 18 金屬構件 24 樹脂接頭 24a 筒部 25 夾頭 25a 前端部 25b 後端部 25c 光纖固持部 34 樹脂接頭 I63078.doc 201250312 34a 第1圓筒部 34b 第2圓筒部 34c 切口部 35 夾頭 35a 大徑部 35b 小徑部 35c 縫隙 35d 凸緣 35e 光纖固持部 36 按壓具 36a 凸緣 40 光連接器 44 樹脂接頭 44a 第1筒部 44b 第2筒部 44c 錐形部 45 夾頭 45a 小徑部 45b 大徑部 45c 縫隙 45d 光纖固持部 100 裝置 101 受光/發光元件 102 殼體 ·29· 163078.doc 201250312 103 104 105 105a 聚光透鏡 斜研磨面 開口部 扣合部 163078.doc201250312 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to an optical connector using a light collimator. [Prior Art] In the case of using an optical connector to combine an optical fiber with various optical devices, a technique of using a lens to improve the bonding efficiency and applying a light collimator that combines a single or a plurality of optical fibers has been proposed. In such a light collimator, the end face of the optical fiber and the collimating lens need to be positioned. In the prior art, a method of positioning the end face of the optical fiber and the collimator lens is known, and a method of inserting a spacer of another component into the holding member is known (for example, see Patent Document 1). CITATION LIST Patent Literature Patent Literature 1: JP-A-2007-241094 SUMMARY OF THE INVENTION Problems to be Solved by the Invention In an optical connector used in combination with an optical fiber and various optical devices, it is required to be on a shape surface. Its small size keeps the positional relationship between the fiber and the collimating lens even if it is repeatedly inserted and removed on the machine surface. However, as disclosed in Patent Document 1, if other parts are used for the positioning of the end face of the optical fiber and the collimator lens, the number of parts increases, and the assembly procedure becomes complicated... Inserting other parts into the holding member On the other hand, the smaller the size of the optical connector, the more difficult it is, and the cost required for the operation increases. I63078. Doc 201250312 The present invention has been made in view of the above points, and an object of the present invention is to provide an optical connector capable of accurately positioning a collimating lens and an optical fiber without requiring an cumbersome assembly step. Means for Solving the Problem An optical connector according to the present invention includes a metal holding member having a receiving portion for accommodating a collimating lens at one end and an insertion hole for inserting an optical fiber at the other end, and a resin joint. a first insertion hole A for inserting the holding member at one end, a second insertion hole for inserting the optical fiber at the other end, and a chuck including a holding portion of the optical fiber, and inserting the resin joint And positioning at least one of the collimator lens and the end surface of the optical fiber with a recess formed in a vicinity of the housing portion of the holding member, and positioning by inserting the through hole The head is elastically deformed toward the inner side in the radial direction, whereby the optical fiber is fixed by the holding portion. According to the optical connector, at least one of the collimator lens and the optical fiber is positioned in contact with the recessed portion provided in the holding member, so that the collimating lens and/or the optical fiber can be positioned with respect to the depressed portion, and thus, as before When other members are inserted into the holding member, the work efficiency can be improved, the cost can be suppressed, and the positioning of the collimator lens and the optical fiber can be easily performed. Also, by inserting the through hole of the resin joint. The optical fiber is elastically deformed toward the inner side in the radial direction to fix the optical fiber with the holding portion, so that the positioned optical fiber can be strongly fixed. The result is that the collimating lens can be aligned with the fiber with high precision without complicated assembly steps. For example, in the above optical connector, 4 of the aforementioned joints will have a relative to 163078. Doc • 4 · 201250312 The front end of the through hole is formed in a cylindrical shape with a smaller diameter than the rear end portion, and a slit is provided along the insertion direction by a cone provided on the inner wall of the through hole The surface is abutted and elastically deformed toward the inner side in the radial direction, whereby the optical fiber is fixed by the holding portion. In this case, only the hole is inserted to deform the head, and the fiber can be retained with this, so that the optical connector can be easily assembled. In the above optical connector, the chuck has a cylindrical shape formed of an elastic material, and is elastically deformed inward in the radial direction by abutting against the inner wall of the through hole, whereby the optical fiber is fixed by the holding portion. When the shape is clear, the chuck can be deformed only by inserting the through hole of the resin joint, and the optical fiber can be fixed by the holding portion, so that the optical connector can be easily assembled. In particular, since the chuck is formed of an elastic material, it is not necessary to provide a slit for causing elastic deformation, and the like, so that the cost required for the manufacture of the chuck can be reduced. Further, in the optical connector, the chuck has a cylindrical shape in which a large diameter portion and a small diameter portion are connected to an insertion direction of the through hole, and a slit is provided along the insertion direction. The outer surface of the diameter portion is in contact with the inner wall of the through hole and is elastically deformed inward in the radial direction. The optical fiber may be fixed to the holding portion provided on the inner surface of the small diameter portion. In this case, the chuck can be deformed only by inserting the through hole of the resin joint, and the optical fiber can be fixed by the holding portion, so that the optical connector can be easily assembled. Further, since the optical fiber can be held by the holding portion provided on the inner surface of the small-diameter portion different from the large-diameter portion of the contact of the through-hole of the resin joint, it is possible to prevent excessive pressing force from being applied to the optical fiber without damaging the optical fiber. Fix it. Furthermore, in the above optical connector, the aforementioned connector has a pass with respect to the aforementioned 163078. Doc 201250312 A cylindrical shape in which a large diameter portion and a small diameter portion are connected in a hole insertion direction, and a plurality of slits are provided in the large diameter portion along the insertion direction, and the outer surface of the large diameter portion is connected to the outer surface The inner wall of the hole abuts and is elastically deformed toward the inner side in the radial direction. Thus, the optical fiber may be fixed to the holding portion provided on the inner surface of the large diameter portion. In this case, the chuck can be deformed only by inserting the through hole of the resin joint, and the optical fiber can be fixed by the holding portion, so that the optical connector can be easily assembled. Further, since a plurality of slits are provided in the large-diameter portion, when the large-diameter portion is elastically deformed inward in the radial direction, the optical fiber can be uniformly applied to the optical fiber, and the optical fiber can be held in a stable state. In the optical connector described above, a pressing device that contacts the end portion of the chuck to fix the chuck may be provided. In this case, by fixing the chuck with the pressing device, the positional deviation of the chuck can be prevented, so that the optical fiber can be surely fixed. Preferably, in the optical connector, a cover that covers the second insertion hole and the optical fiber exposed from the second insertion hole is provided. In this case, by fixing the chuck and the optical fiber with the cover, the positional deviation of the chuck and the optical fiber can be prevented, so that the optical fiber can be surely fixed. In the above optical connector, it is preferable that a plurality of convex portions are provided in a portion of the cover that covers the optical fiber. In this case, the sheath can be held in one part of the cover, so that the sheath of the coated optical fiber can be effectively fixed without increasing the number of parts. Preferably, in the optical connector, the outer peripheral portion of the resin joint is provided with a fastened portion that is engaged with the engaging portion on the device side when the device is connected. In this case, the position of the optical connector of the insertion device can be prevented from being displaced by the engaged portion provided in one of the resin joints, so that the optical connector can be brought into good contact with the device. 163078. Doc 201250312 In the above optical connector, it is preferable that the outer periphery of the resin joint is provided with an annular flange which can be inserted into the connection position of the device. In this case, since the device can be inserted into the connection position by the flange, the optical connector can be positioned at a specific position of the device. Invention Effect of the Invention According to the present invention, the collimating lens can be made without complicated assembly steps. High precision fiber positioning. [Embodiment] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, the state in which the optical connector of the present invention is connected to the device will be described. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a side cross-sectional view showing a state in which an optical connector of the present invention is attached to a device. Further, in Fig. 1, the device having the light receiving/emitting element is described for convenience of explanation, but the configuration of the device is not limited thereto, and can be appropriately changed. As shown in Fig. 1, the apparatus 1 for connecting the optical connector 10 of the present invention is configured such that the light-receiving/light-emitting element 101 is disposed inside the casing 〇2, and is disposed on the optical axis of the light-receiving/light-emitting element 101. The condensing lens 103 and the obliquely polished surface 104 are supported by a support mechanism not shown. Further, an opening portion 105 into which the optical connector 10 is inserted is provided on the side surface of the casing 1A of the apparatus 1A. In the apparatus 100, the laser light emitted from the light-emitting element 101 is reflected by the obliquely polished surface 104 via the collecting lens 103, and is introduced into the opening 1〇5. Then, the light reflected by the obliquely-polished surface 104 is condensed by the collimator lens 12 of the optical connector 1 to be incident on the optical fiber 13. The light thus incident is then propagated within the optical fiber 13. In addition, in FIG. 1, the 163078 of the laser light emitted from the light-emitting element 1 〇 1 is shown by a dotted line. Doc 201250312 Light path. Further, in the device 100, light propagating through the optical fiber 13 is calibrated via the collimator lens 12. Then, the laser light emitted from the optical fiber 13 is reflected by the obliquely polished surface 1〇4, and introduced into the light receiving element 101 via the collecting lens 103. In addition, the optical path of the laser light emitted from the optical fiber 13 is shown by a dotted line in FIG. In the apparatus 100 of the present embodiment, when the optical connector 10 is inserted into a specific position in the casing 102, the laser light propagating between the light receiving/emitting element 101 and the optical fiber 13 can pass through the collecting lens 103 and the obliquely polished surface. 1 〇 4 and properly exit the incident. Hereinafter, the configuration of the optical connector 10 of the present invention connected to such a device will be described. (First Embodiment) Fig. 2 is a side cross-sectional view showing the optical connector 1 according to the first embodiment of the present invention. As shown in FIG. 2, the optical connector 1 is configured to include a holder n as a holding member having a substantially cylindrical shape, a collimator lens 12 held at one end of the holder 11, and an optical fiber 13 'It is inserted from the insertion hole 11 a provided at the other end of the holder 11; the resin joint 14 holding the holder 11 and the optical fiber 13; the chuck 15 fixing the optical fiber 13; and the cover 16 covering the resin joint 14 and The collet 15; a sheath 17 covering the optical fiber π; and a metal member 18 having a substantially cylindrical shape for fixing the sheath 17. Further, in the optical connector 10 of the second embodiment, a plastic optical fiber is preferably inserted as the optical fiber 13. The holder 11, the collimator lens 12, and the optical fiber 13 constitute an optical connector 1A. Details of the optical connector 10a will be described later. 3 is a side cross-sectional view of the resin joint 4. As shown in FIG. 3, the resin joint 14 has a substantially cylindrical shape, and a through hole I63078 along the length direction of the resin joint 14. Doc 201250312 is provided with an insertion hole 14a into which the holder 11 is inserted, and an opening 14b into which the optical fiber 13 is inserted at the other end. » The insertion hole 14a constitutes a first insertion hole, and the opening 14b constitutes a second insertion hole. A flange 14c is provided near the center of the resin joint 14. In the resin joint 14, a portion of the flange 14c to the insertion hole 14a is referred to as a first cylindrical portion 14d, and a portion of the flange 14c to the opening portion 14b is referred to as a second cylindrical portion 14e. In the first cylindrical portion 14d, a groove-shaped engaged portion 14f is provided at the center. Further, the first cylindrical portion I4d is formed to have a smaller diameter than the second cylindrical portion 14e. Further, in the through hole of the resin joint 14, a positioning portion I4g is provided at the boundary between the flange portion 14c and the second cylindrical portion 14e. "The holding portion I4h is provided in a portion of the second cylindrical portion 14e close to the flange 14c. A tapered region 14i is provided in a portion close to the switch portion i4b. Here, the inner diameter of the positioning portion 14g to the insertion hole 14a is substantially the same as the outer diameter of the retainer 11, and the inner diameter of the holding region 14h is formed to have substantially the same diameter as the outer diameter of the optical fiber 13. The inner diameter of the tapered region i4i is formed to have a tapered shape from the side of the opening portion 14b toward the side of the flange 14c. Further, in the vicinity of the opening portion 14b of the tapered region 14i, a notch portion 14j is provided along the inner circumference thereof. The outer diameter of the flange 14c is configured to be larger than the inner diameter of the opening portion 105 in the device 1A to which the optical connector 10 is attached. Therefore, when the optical connector 1 is inserted into the device 1 ,, it is usually inserted into the device 100 up to the flange 14c, and the optical connector 1 can be positioned at a specific position within the casing 102. Further, the engaged portion 14f' of the resin joint μ is provided to be in contact with the engaging portion 105a provided on the inner circumference of the opening portion ι of the device 1 (see Fig. 1), thereby preventing the insertion device 1〇〇. The positional deviation of the optical connector 10 'connects the optical connector 1 to the device 163078. Doc 201250312 Figure 4 is a (a) perspective view of the collet 15 and a side cross-sectional view (b). As shown in Fig. 4, the chuck 15 has a front end portion (the lower left side of Fig. 4(a)) which is inserted in the direction of the insertion of the tapered region i4i of the through hole of the resin joint 14 (Fig. 4 (a). The upper right side of the upper side) is a cylindrical shape of a small diameter and is provided with a slit 15a along the insertion direction with respect to the tapered region 14i. Further, the chuck 15 is provided with an engaging portion 15b on the outer periphery of the rear end portion in the insertion direction with respect to the tapered region 14i, and a flange 15c is provided on the outer periphery of the rear end portion. Further, an optical fiber holding portion 15d is provided on the inner circumference of the end portion on the front side of the chuck 15. The inner diameter of the optical fiber holding portion 15d is configured to have substantially the same diameter as the outer diameter of the optical fiber 13. As long as the chuck 15 exhibits elasticity in structure, a rubber 'elastomer, metal, or the like can be used as the material. The cover 16 is provided to prevent the chuck 15 inserted into the resin joint 14 from being exposed, and as shown in FIG. 2, 'the second cylindrical portion 14e and the opening 14b covering the resin joint 14 and the opening 14b of the resin joint 14 A portion of the exposed fiber 13 is shown. The second cylindrical portion 14e to which the cover 16 is attached has substantially the same diameter as the flange 14c. On the outer circumference of the portion of the optical fiber 13 of the cover 16 is formed a sheath holding portion 16b which is provided with a plurality of convex portions 16 & The sheath 17 is formed, for example, of an elastic material or a tensile-resistant fiber, and covers the entire optical fiber 13 along the longitudinal direction of the optical fiber 13 from the sheath holding portion 16b of the cover j 6 to the cover 16 . The sheath 17 is not in close contact with the optical fiber 13 and is vacantly installed. Therefore, even if the sheath 17 is pulled, the optical fiber 13 is not biased, and the disconnection of the optical fiber 13 can be prevented. The metal member 18 is formed in a z-shaped slit in the longitudinal direction. The metal member 18 is fixed by covering the sheath 17 attached to the sheath holding portion 16b of the cover 16. 163078. Doc 10: 201250312 The light collimator 10a composed of the holder 11, the collimator lens 12, and the optical fiber 13 used in the optical connector of the first embodiment of the present invention will be described in detail. Fig. 5 is a side elevational view of the optical collimator 1 & embodiment of the present invention. Fig. 6 is a cross-sectional view taken along the line A-A of Fig. 5; The holder 11 is formed of, for example, a metal material such as stainless steel. In particular, the workability is a, and the retainer π is preferably formed of a Worthfield iron-based stainless steel. As shown in Fig. 6, an opening portion is provided at an end portion of the holder 11 on the side of the collimator lens 2, and a housing portion lc1 for accommodating the collimator lens 12 is provided inside the opening portion lib. In order to prevent damage to the surface of the collimator lens 12, the accommodating portion 丨丨c is provided so as to accommodate the entire size of the collimator lens 12 inside thereof, and is configured to press the collimator lens 12 therein. Further, a through hole lid having a diameter slightly larger than the outer diameter of the optical fiber 13 is provided inside the holder. The through hole lid is connected to the insertion hole iia and is provided to communicate with the accommodating portion 1 lc. Further, the holder cymbal is provided with a plurality of depressed portions 1 le formed by pressing processing from a peripheral portion thereof by a tool or the like. The recesses lie are provided between the accommodating portion 1 and the through hole 丨ld for positioning of the collimator lens 12 and the optical fiber 13, and the details thereof will be described later. The collimator lens 12 is formed, for example, of a glass material, and is formed of a spherical mirror having a spherical shape. As shown in Fig. 6, the collimator lens 12 is disposed so as to face the end portion of the optical fiber 13 inserted through the through hole lid in a state of being housed in the receiving portion 11c of the holder 11. The optical fiber 13 is composed of a core material 13a provided through the center thereof, a clad layer 13b covering the core material 13a, and a reinforcing layer 13c covering and reinforcing the clad layer 13b. The core material 13a, the clad 13b, and the strengthening layer 13c are disposed on the same plane on the end surface opposite to the collimator lens 12 of the optical fiber 13. That is, opposite to the end of the collimator lens 12 163078. On the surface of doc 201250312, the core material 13a, the cladding layer 13b and the reinforcing layer 13c are arranged in alignment. Further, the optical fiber 13 is inserted into the through hole lid through the insertion hole 11a, and is fixed in a state where the tip end portion thereof is disposed in the vicinity of the collimator lens 12 so as to face the ball. In the optical collimator 10a of the first embodiment, the optical fiber 13 is formed of, for example, a graded refractive index (GI) type optical fiber, and is configured such that the refractive index continuously changes in a cross section perpendicular to the optical fiber axis. Further, the core material 13a and the clad layer 13b are formed, for example, by a perfluoro-substituted optical resin in which CH is bonded to F, and thus the optical fiber 13 is composed of a perfluoro-substituted optical resin, and is formed of a GI-type optical fiber. Achieve high speed and large capacity communication. The optical collimator 10a of the first embodiment having the above-described configuration is configured to facilitate the positioning of the collimator lens 12 and the optical fiber 13 in order to suppress the increase in cost, and to use the recessed portion lie provided in the holder 11. Specifically, by positioning one of the collimator lens 12 and the optical fiber 13 in contact with the recessed portion iie provided in the holder 11, it is possible to suppress the increase in cost without using such a positioning spacer or the like. The positioning of the collimator lens 12 and the optical fiber 13 is simply performed. Here, a method of positioning the collimator lens 12 and the optical fiber 13 in the holder 11 of the optical collimator 10a of the first embodiment will be described with reference to Fig. 7 . 7 is an enlarged view of the 2-point chain line B shown in FIG. 6. As shown in FIG. 7, one portion of the collimator lens 12 abuts against a portion of the recess portion lie that faces the collimator lens 12, and a portion of the cladding 13b or the reinforcing layer 13c, or the cladding 13b and the reinforcing layer 13c constituting the core material 13a of the optical fiber 13 abuts against a portion of the recessed portion lie facing the optical fiber 13 "so in the abutting state, Collimating lens 12 and 163078. Doc -12- 201250312 The optical fibers 13 are respectively positioned at specific positions of the holder 11. As shown in FIG. 7, the recessed portion lle is opposed to a plane orthogonal to the insertion direction of the optical fiber 13 (for example, disposed in parallel with the end surface of the optical fiber 13 shown in FIG. 7 and passing through the plane c of the center of the depressed portion lie). The angle of the portion of the collimating lens 12 is set at a different angle from the angle of the portion opposite to the optical fiber 13. Such a depressed portion 1 le is, for example, subjected to pressing processing by using a tapered tool having a different shape of the distal end portion, and is formed by pressing with such a tool, and the depressed portion lle is made based on the central axis at the time of the pressing processing. The angle toward the portion of the collimator lens 12 is at an angle different from the angle of the portion opposite to the optical fiber 13, so that the collimator lens 12 and the optical fiber 13 having different shapes can be effectively positioned. Further, in the optical collimator 10a of the first embodiment, the recessed portions ne are provided in plural numbers (three in the present embodiment) on the same circumference of the holder 11. For the formation of the depressed portion lie on the same week, for example, it is considered that the pressing process is simultaneously performed from the outer periphery of the holder 11 by means of the above-described tool having a different front end shape. Thus, since the plurality of recessed portions lle are provided on the same circumference, the collimator lens 12 and the optical fiber 13 can be abutted at a plurality of positions, so that the positioning of the collimator lens 12 and the optical fiber 13 can be performed with higher precision. The depressed portion lie forms an inclined surface iiei with the portion opposite to the collimator lens 12. The inclined surface 11 is disposed in a plane orthogonal to the insertion direction of the optical fiber 13 indicated by the arrow in the circle 7 (for example, disposed in parallel with the end surface of the optical fiber 13 as shown in FIG. 7) and passing through the base end portion of the depressed portion lie The angle of plane D) is 91. Above 45. In the following manner, the angle Θ丨 of the inclined surface 侧 of the collimator lens 12 side is set to 〇 with respect to the plane d orthogonal to the insertion direction of the optical fiber 13. Above 45. Hereinafter, one side of the optical fiber 13 side of the collimator lens 12 can be supported by this. Doc •13· 201250312 The state of positioning, so the positional accuracy of the collimator lens 12 can be improved. On the other hand, the portion of the depressed portion lle that faces the optical fiber 13 constitutes an inclined surface. The inclined surface Uh is set to 0 at an angle Θ2 with respect to a plane orthogonal to the insertion direction of the optical fiber 13 (e.g., a plane E disposed parallel to the end surface of the optical fiber 13 shown in Fig. 7). Above 20. The following way is set. Thus, the angle of the inclined surface is set to 0 with respect to the plane E. Above 20. Hereinafter, as described above, in the case where the optical fiber 13 is constituted by an optical fiber in which the anger material 13a, the cladding layer 13b, and the reinforcing layer 13c are disposed on the same plane, it is easy to "contact the end surface of the optical fiber 13 with the concave portion Ue". Ensure the accuracy of these positions. As described above, in the optical collimator 10a of the first embodiment, one portion of the collimator lens 12 and one portion of the optical fiber 13 are positioned in contact with the recessed portion lie provided on the holder ', so that the depressed portion lie can be used as a reference. When the collimator lens 12 and the optical fiber 13' are positioned, the work efficiency is improved as compared with the case where the other components are inserted into the holder 11 as before, and the cost increase can be suppressed, and the collimator lens 12 and the optical fiber 13 can be simply performed. Positioning. Next, the assembly procedure of the optical connector 1 according to the first embodiment will be described with reference to Figs. 8 to 12 . 8 to 12 are explanatory views sequentially showing an assembly procedure of the optical connector. The assembly step of the optical connector 10 includes the step (a) of pressing the holder 11 into the resin joint 14; the step (b) of inserting the optical fiber 13; the step (c) of inserting the chuck 15; and the step of installing the cover 16 (d) The step (e) of the Anton jacket 17; and the step (f) of mounting the metal member 18. The following is a detailed description of each step. [Step (a)] First, as shown in Fig. 8, 'inserted into the holder 163078 from the insertion hole Ma of the resin joint 14. Doc • 14· 201250312 11. In the accommodating portion 11C of the retainer 11, the collimator lens 12 is positioned and housed in a state in which it is in contact with the recessed portion 丨le. The retainer 11 that is press-fitted from the insertion hole 14a is stationary when the insertion hole 11& of the holder 11 comes into contact with the positioning portion 14g. At this time, the holder 11 is in a state of being positioned at a specific position. [Step (b)] Next, as shown in Fig. 9, the optical fiber 13 is inserted from the opening 14b of the resin joint 14. The optical fiber 13 is guided by the inner diameter of the resin joint 13 to reach the insertion hole 1 la of the holder u, and is guided by the inner diameter of the holder 而 to reach the depressed portion 丨u. The insertion operation ends when the optical fiber 13 abuts against the recess Ue. At this time, the optical fiber 13 is in a state of being positioned at a specific position. [Step (c)] Next, as shown in Fig. 10, the chuck 15 is inserted from the end side of the small diameter and pressed into the opening portion 14b of the resin joint 14. The chuck 15 is stationary when the front end of the chuck 15 abuts against the boundary between the tapered region 14i of the resin joint 14 and the holding region 14h. At this time, the flange 15c of the chuck 15 is engaged with the slit portion 14j provided in the tapered region 14i of the resin joint 14, and the end portion thereof does not protrude from the end surface of the resin joint 14. Further, the engaging portion 15b of the chuck 15 elastically deforms the inner circumferential surface of the resin joint 14 to be engaged with the inner circumferential surface of the resin joint 14. Thereby, the collet 15 is not easy. It falls off from the resin joint 14. The slit 15a of the collet 15 is tightened as it enters the tapered region 14i of the resin joint 14, and the collet 15 is elastically deformed toward the inner side in the radial direction, whereby the optical fiber 13 is held and fixed by the optical fiber holding portion 15d of the collet 15. [Step (d)] Next, as shown in Fig. 11, the second cylindrical portion 14e and the opening portion 14b covering the resin joint 14 and the portion of the optical fiber 13 exposed from the opening portion 14b are 163078. Doc 15 201250312 Mounting cover 16. By fixing the chuck 15 and the optical fiber 13 with the cover 16, the positional deviation of the chuck 15 and the optical connector 13 can be prevented, and the optical fiber η can be surely fixed. [Step (e)] Next, as shown in Fig. 12, the sheath 17 is attached so as to cover the entire optical fiber 13 along the longitudinal direction of the sheath holding portion 16b of the cover 16 or the optical fiber 13 exposed from the cover 16. The sheath 17 is fixed to the sheath holding portion 16b by the convex portion 16a provided in the sheath holding portion 16b of the cover 16, so that the sheath 17 of the coated optical fiber 13 can be effectively fixed without increasing the number of parts. [Step (1)] Finally, the female metal member 18' is attached so as to cover the sheath 17 attached to the sheath holding portion 16b of the cover 16 to thereby obtain the optical connector shown in Fig. 2. The metal member 18 can be mounted by largely opening the gap of the metal member 丨8 and sandwiching the cover 16 and the sheath 17, and thereafter closing the gap of the metal member 18. The metal member 18 is used to mount the cover 16 and the sheath π more reliably. However, it is also possible to fix the cover 16 by bonding the cover 16 itself to the resin joint 14 or the optical fiber 13 by a bonding agent. As described above, in the optical connector 1 of the first embodiment, one portion of the collimator lens 12 is One portion of the optical fiber 13 is positioned in contact with the recess lie provided on the holder ,, so that the collimator lens 12 and the optical fiber 13 can be positioned with respect to the recess lle, so that other parts are inserted into the holder as before. In comparison with the case, the work efficiency can be improved, the cost increase can be suppressed, and the positioning of the collimator lens 12 and the optical fiber 13 can be simply performed. Further, in the optical connector 10 of the first embodiment, the collet 15 can be deformed only by inserting the through hole of the resin joint 14, and the optical fiber 13 can be fixed by the optical fiber holding portion 15d, so that it can be simplified. Doc 201250312 Assembly work on a single location. For example, in the case where an optical fiber is used for optical communication between machines or in a large-capacity communication in a machine, as in the case of forming a spacer (a spacer portion) on the positioning of an optical fiber and a collimating lens, it is necessary to use a metal material. The holding member (holder) configured as described above performs processing such as cutting. However, since the size of the holding member of the optical connector used in the above-described use is small, the processing accuracy of the cutting process is lowered, and the cost associated with the processing (e.g., the cost of the chip due to dimensional defects) is remarkably increased. On the other hand, in the holder 11 of the optical connector 10 of the first embodiment, the spacer 11 (the spacer portion) is formed by not cutting the holder 11 as the holding member, and the recess 11 is formed by plastic working. e 'This can significantly reduce the cost associated with processing. Further, in the optical connector 10 of the first embodiment, the positioning of the collimator lens 12 and the optical fiber 13 is performed by the depressed portion lie formed in the holder 11, and the holding region i4h formed on the resin joint 14 is formed on the other hand. And the optical fiber holding portion i5d formed in the chuck 15 fixes the optical fiber π. In this case, the optical fiber 13 is firmly fixed in the positioning state. Therefore, in the case of using the optical fiber 13 for large-capacity communication between machines or in the machine, the optical fiber cassette can be maintained and collimated in the case of repeated insertion and removal. The positional relationship of the lens 12. In the above description, a case where one of the collimator lens 12 and a part of the optical fiber 13 are brought into contact with the recessed portion lle provided in the holder 而 to position the collimator lens 12 and the optical fiber 13 will be described. However, the positioning method of the collimator lens and the optical fiber 13 is not limited thereto, and can be appropriately changed. For example, the collimator lens 163078 may be omitted without causing both the collimator lens 12 and the optical fiber 13 to abut the recessed portion. Doc 201250312 12 or one of the optical fibers 13 abuts, while the other is positioned in a portion of the holder 11 other than the recess u e . In this case, however, it is premised that the portion for positioning the other is designed to have a certain positional relationship with the recess 11 e. That is, the optical connector 10 of the present invention also includes a concept in which one of the collimator lens 12 or the optical fiber 13 is brought into contact with the recess Ue. (Second Embodiment) An optical connector 20 having a different configuration from the optical connector 1 shown in the first embodiment will be described. In the optical connector 20, a part of the structure of the resin joint 24 and the structure of the chuck 25 are different from those of the optical connector. The optical connector 20 of the second embodiment will be described below with reference to Figs. 13 and 14 . Fig. 13 is a side sectional view showing the optical connector 20 of the second embodiment. Figure 14 is a (a) perspective view and a (b) side sectional view of the head loss 25. In the second embodiment, the same components as those of the optical connector 10 of the first embodiment are denoted by the same reference numerals and will not be described. On the inner circumference of the resin joint 24, a holding portion 14h is provided in a portion of the second cylindrical portion i4e close to the flange 14c, and a cylindrical portion 24a is provided in a portion close to 14b. The inner diameter of the tubular portion 24a is configured to be equal from the opening portion Mb side to the holding region Mh. Thus, since the resin joint 14 has a simple structure, it can be produced at a low cost. As shown in Fig. 14, the collet 25 has a cylindrical shape formed of an elastic material. Further, as the elastic material, it is preferable that the outer diameter of the rubber and the elastic jaws 25 is smaller than the outer end portion 25a from the intermediate portion toward the insertion direction of the cylindrical portion 24a of the through hole of the resin joint 24. Conical, from the middle portion, the inner diameter of the rear end portion 25b and the cylindrical portion 24a of the resin joint 24 is substantially the same as 163078. Doc -18- 201250312 What? Further, an optical fiber holding portion 25c having an inner diameter substantially equal to the outer diameter of the optical fiber I] is provided on the inner circumference of the end portion side of the chuck 25. Next, an assembly procedure of the optical connector 2A of the second embodiment will be described. The assembly steps of the optical connector 20 and the first! In the assembly step of the optical connector 10 of the embodiment, [step (b)] and [step (c)] are different. In the assembly step of the optical connector 20, after the holder i is positioned in the resin joint 24, the optical fiber 13 to which the chuck 25 is fixed is inserted from the opening portion 14b of the resin joint 24. The optical fiber 13 is guided by the inner diameter of the resin joint 24 to the insertion hole 1 la of the holder 11 and guided by the inner diameter of the holder 11 to reach the depressed portion lie. The insertion operation ends when the optical fiber 13 abuts against the recessed portion lie. Further, the chuck 25 is in contact with the inner wall of the cylindrical portion 24a of the resin joint 24, and is elastically deformed inward in the radial direction, whereby the fixed optical fiber 13 is held in the optical fiber holding portion 25c of the chuck 25. At this time, the optical fiber 13 is in a state of being positioned at a specific position, and the chuck 25 is held in the tubular portion 24a by friction. By inserting only the through hole of the resin joint 24, the chuck 25 can be deformed, and the optical fiber 13 can be fixed by the optical fiber holding portion 25c. Therefore, the assembly work can be easily performed. In particular, since the collet 25 is formed of an elastic material, it is not necessary to provide a slit or the like for causing elastic deformation, so that the cost required for the manufacture of the collet 25 can be reduced. In the optical connector 20 of the second embodiment, the positioning of the collimator lens 12 and the optical fiber 13 is performed by the depressed portion lie formed in the holder ,, and on the other hand, by the holding region 14h formed in the resin joint 24 and The optical fiber holding portion 25c formed in the chuck 25 fixes the optical fiber 13. In this case, the optical fiber 13 is firmly fixed in the positioned state. Therefore, use fiber 13 for inter-machine or machine 163078. In the case of the large-capacity communication of doc 201250312, the positional relationship between the optical fiber 13 and the collimator lens 12 can be maintained even in the case of repeated insertion and removal. (Third Embodiment) An optical connector 30 having a different configuration from the optical connector 10 shown in the first embodiment will be described. The optical connector 3 is different from the optical connector 1 at a portion of the structure of the resin joint 34 and the structure of the chuck 35 and the point of using the pressing member 36. The optical connector 30 of the third embodiment will be described below with reference to Figs. 15 and 16 . Fig. 15 is a side sectional view showing the optical connector 3 of the third embodiment. Figure 16 is a perspective view of (a) of the collet 35, and (b) a side cross-sectional view. In the third embodiment, the same components as those of the optical connector 1 of the first embodiment are denoted by the same reference numerals and will not be described. On the inner circumference of the resin joint 34, a holding portion 14h is provided in a portion of the second cylindrical portion 14e close to the flange 14c, and a second cylindrical portion 34b is provided in a portion close to 14b of the second cylindrical portion 14e. The first cylindrical portion 34a is provided between the holding region 14h and the second cylindrical portion 34b. The inner diameter of the first cylindrical portion 34a is larger than the inner diameter ' of the holding region 14h and smaller than the inner diameter of the second cylindrical portion 34b. Further, in the vicinity of the vicinity 14b of the opening portion of the second cylindrical portion 34b, a notch portion 34c is provided along the inner circumference thereof. As shown in Fig. 16, the chuck 35 is provided with a thin plate spring and has a circle formed by connecting the large diameter portion 35a and the small diameter portion 35b in the insertion direction of the first cylindrical portion 34a of the through hole of the resin joint 34. The cylindrical shape is provided with a slit 35c along the insertion direction of the [tubular portion 34a], and a flange 35d is provided at the rear end portion. The outer diameter of the large diameter portion 35a and the first cylindrical portion 34a of the resin joint 34 are configured to have substantially the same diameter. Further, in the inner circumference of the small diameter portion 35b, there is a direction 163078. Doc -20- 201250312 The fiber holding portion 35e of the bulging portion that bulges from the inside in the semi-light direction. In addition, for example, the cool head 35 is 0. The sheet metal is made up of about 1 mm, and the sheet metal is bent to form a cylindrical shape. The chuck 35 is preferably formed of metal. If a resin, a rubber, an elastomer or the like is used as a material, there is a case where the strength is insufficient. The presser 36 has a substantially cylindrical shape & is provided with a flange 36 & at one end. The outer diameter of the presser 36 and the inner diameter of the second cylindrical portion 34b of the resin joint 34 are formed to have substantially the same diameter. Next, the assembly procedure of the optical connector 3A of the third embodiment will be described. In the assembly procedure of the optical connector 30 and the assembly procedure of the optical connector 1 of the first embodiment, [step (b)] and [step (c)] are different. In the assembling step of the optical connector 30, 'the holder 丨丨 is positioned inside the resin 34', the optical fiber 13 to which the chuck 35 is fixed is inserted from the opening 14b of the resin joint 34. The chuck 35 is stationary when the flange 35d abuts against the boundary between the first tubular portion 3A and the second tubular portion 34b. The slit 3 5c of the chuck 35 is tightened in the first tubular portion 34a, and the diameter of the entire chuck 35 is reduced. The optical fiber 13 is guided by the inner diameter of the resin joint 34 to reach the insertion hole 11a of the holder 11, and is guided by the inner diameter of the holder 11 to reach the depressed portion 1le. The insertion operation ends when the optical fiber 13 abuts against the recess Ue. At this time, the optical fiber 13 is in a state of being positioned at a specific position, and the chuck 35 is in a state of being stretched toward the inner wall of the first tubular portion 34a by the elastic imparting force toward the outer side in the radial direction in the first tubular portion 34a. The outer surface of the large diameter portion 353 is in contact with the inner wall of the first cylindrical portion 34a and is elastically deformed inward in the radial direction. The optical fiber 13 can be fixed to the optical fiber holding portion 35e provided on the inner surface of the small diameter portion 35b. Thus, the chuck 35 is an optical fiber that does not contact the inner wall of the first cylindrical portion 34a. Doc 201250312 The holding portion 35e holds the optical fiber 13, so that excessive pressing force can be prevented from being applied to the optical fiber 13, and the optical fiber 13 can be fixed without being damaged. Further, the flange 35d of the chuck 35 exerts an elastic force toward the outer side in the radial direction in the second tubular portion 34b. After the optical fiber 13 is clamped, the push-in tamper 36 is inserted from the opening 14b of the resin joint 34. When the end portion of the pressing device 36 comes into contact with the first cylindrical portion 34a and the second tubular portion 3, the holder 36 is stationary, and the chuck 35 is fixed. The flange 36a of the pressing tool 36 is engaged with the notch portion 34c of the second cylindrical portion 34b of the resin joint 34. Further, the pressing device 36 may be configured such that the chuck 35 is not fixed to the first cylindrical portion 34a and is pressed in, but is fixed to the optical fiber 13 in the same manner as the chuck 35 when positioning the optical fiber 13, and the pressing is pressed in this state. With 36. In this case, the pressing member 36 is pressed into the second cylindrical portion 34b'. The chuck 35 is also pressed into the first cylindrical portion 34a, and can be fixed to a specific position. In the optical connector 3 of the third embodiment, the positioning of the collimator lens 12 and the optical fiber 13 is performed by the recess Ue formed in the holder, and on the other hand, the holding region 14h formed in the resin joint 34 and The optical fiber holding portion 35e formed on the chuck 35 fixes the optical fiber 13. In this case, the optical fiber 13 is firmly fixed in the positioned state. Therefore, in the case of using the optical fiber 13 for large-capacity communication between machines or in the machine, the positional relationship between the optical fiber 13 and the collimator lens 12 can be maintained even in the case of repeated insertion and removal. (Fourth Embodiment) An optical connector 40 having a different configuration from the optical connector 10 shown in the first embodiment will be described. The optical connector 40 has a partial structure of the resin joint 44 and the structure of the collet 45 and the point of using the pressing member 36 and the optical connector 1 is not 163078. Doc -22- 201250312 The same. The optical connector 40 of the fourth embodiment will be described below with reference to Figs. 17 and 18 . Fig. 7 is a side cross-sectional view of the optical connector 4A of the fourth embodiment, and Fig. 18 is a perspective view of (a) and (b) of the head 45. In the fourth embodiment, the same components as those of the optical connector of the first embodiment are denoted by the same reference numerals and will not be described. In the inner circumference of the resin joint 44, a holding portion 14h' is provided in a portion of the second cylindrical portion 14e close to the flange 14c, and a second cylindrical portion 44b is provided in a portion of the second cylindrical portion 14e close to the opening 14b. The first cylindrical portion 44a is provided between the holding region 14h and the second cylindrical portion 44b. The inner diameter of the first cylindrical portion 44a is larger than the inner diameter ' of the holding region i4h and smaller than the inner diameter of the second cylindrical portion 44b. Further, a tapered portion 44c is provided at the boundary between the first tubular portion 44a and the second tubular portion 44b. Further, in the vicinity of the opening portion 14b of the second cylindrical portion 44b, a notch portion 44d is provided along the inner circumference thereof. As shown in Fig. 18, the chuck 45 has a cylinder that is connected to the small diameter portion 45a and the large diameter portion 45b in the insertion direction of the first cylindrical portion 44a and the second tubular portion 44b of the through hole of the resin joint 44. A plurality of (three in the present embodiment) slits 45c are formed in the large-diameter portion 45b along the insertion direction. The outer diameter of the small-diameter portion 45a and the inner diameter of the first tubular portion 44a are substantially the same. . Further, the outer diameter of the large diameter portion 45b and the inner diameter of the second cylindrical portion 44b are formed to have substantially the same diameter. Further, an optical fiber holding portion 45d is provided on the inner circumference of the large diameter portion 45b. Further, a tapered portion that conforms to the shape of the tapered portion 44c of the resin joint 44 is provided at the joint portion of the large diameter portion 45b. Next, the assembly procedure of the optical connector 4A of the fourth embodiment will be described. In the assembly procedure of the optical connector 40 and the assembly procedure of the optical connector 10 of the first embodiment, [step (b)] and [step (c)] are different. 163078. Doc • 23-201250312 In the assembly step of the optical connector 40, after the holder 丨丨 is positioned in the resin joint 44, the optical fiber 13 to which the chuck 45 is fixed is inserted from the opening 14b of the resin joint 44. At this time, the chuck 45 inserts the small-diameter portion 45a as a distal end side into the through hole of the resin joint 44, and tightens the slit 45c as it enters the through hole. The optical fiber 13 is guided by the inner diameter of the resin joint 44 to reach the insertion hole 11 a ' of the holder 且 and guided by the inner diameter of the holder π to reach the depressed portion 11 e. When the insertion of the optical fiber 13 with the recessed portion lie is completed, the optical fiber 13 is positioned at a specific position. In the state in which the tapered portion of the large-diameter portion 45b is in contact with the tapered portion 44c of the resin joint 44, the outer surface of the large-diameter portion 45b and the second cylindrical portion 44b of the through-hole of the resin joint 44 are The inner wall abuts and is elastically deformed inward in the radial direction, whereby the fixed optical fiber 13 is held by the optical fiber holding portion 45d provided on the inner surface of the large diameter portion 45b. In this way, when the large-diameter portion 45b is provided with a plurality of slits 4 5 c, when the large-diameter portion 45 b is elastically deformed in the radial direction side, the optical fiber 13 can be uniformly applied to the optical fiber 13 to hold the optical fiber 13 uniformly. 13. After positioning the optical fiber 13, the push-in presser 36 is inserted from the opening 14b of the resin joint 44. The pressing tool 36 is stationary when its end portion comes into contact with the end portion of the large diameter portion 45b of the chuck 45, and the chuck 45 is fixed. The flange 36a of the pressing tool 36 is engaged with the notch portion 44d of the second cylindrical portion 44b of the resin joint 44. Alternatively, the pressing member 36 may be configured not to be pressed after the fixing chuck 45, but to position the optical fiber. At the time of 13 o'clock, it is fixed to the optical fiber 13 like the chuck 45, and the presser 36 is press-fitted in this state. In this case, by pressing the pressing device 36 into the second cylindrical portion 44b, the collet 45 is also pressed into the first cylindrical portion 44a' to be fixed to a specific position. In the optical connector 4 of the fourth embodiment, it is formed by the holder η I63078. Doc •24-201250312 The recessed portion lie positions the collimator lens 12 and the optical fiber 13. On the other hand, the optical fiber 13 is fixed by the holding region i4h formed in the resin joint 44 and the optical fiber holding portion 45d formed on the chuck 45. In this case, the optical fiber 13 is firmly fixed in the positioned state. Therefore, in the case of using the optical fiber cassette 3 for large-capacity communication between machines or in the machine, the positional relationship between the optical fiber 13 and the collimator lens 12 can be maintained even in the case of repeated insertion and removal. The embodiment can be implemented by various modifications. The above implementation. The size, shape, and the like shown in the drawings are not limited thereto, and can be appropriately changed within the range in which the effects of the present invention are exerted. Further, the implementation can be appropriately modified without departing from the scope of the invention. In the above embodiment, the plastic optical fiber is described as an example of the optical fiber 13. However, the optical fiber bundle 3 to which the optical connector 1 of the above embodiment is applied is not limited to the plastic optical fiber. For example, glass fibers can also be used. Further, in the above-described first embodiment, the optical fiber 13 is fixed by inserting only the chuck 15 into the resin joint 14, but the present invention is not limited to this configuration. Alternatively, the chuck 15 and the pressing member may be inserted into the resin joint 14 to fix the optical fiber 13. In the second embodiment, the optical fiber 13 is not limited to the configuration in which the chuck 25 is inserted into the resin joint 24, and the optical fiber 13 can be fixed by inserting the chuck 25 and the pressing member into the resin joint 24. In the third embodiment, the configuration is not limited to the configuration in which the chuck 35 and the presser 36 are inserted into the resin joint 34 to fix the optical fiber 13. The optical fiber 13 can be fixed by inserting only the chuck 35 into the resin joint 34. Similarly, the fourth embodiment is not limited to the configuration in which the chuck 45 and the pressing tool 36 are inserted into the resin joint 44 to fix the optical fiber 13, and the optical fiber 13 may be fixed by inserting only the chuck 45 in the resin joint 44. I63078. Doc -25- 201250312 This application is based on the patent No. 2011-05 8813 filed on March 17, 2011. The overall content of the case is quoted. Into this article. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a side cross-sectional view showing the state in which the optical connector of the present invention is connected to a device. Fig. 2 is a side sectional view showing the optical connector of the first embodiment. Fig. 3 is a side sectional view showing the resin joint of the first embodiment. Fig. 4 is a perspective view of (a) of the collet of the first embodiment, and Fig. 4 is a side sectional view of (b). Fig. 5 is a side view of the optical collimator of the first embodiment. Figure 6 is a cross-sectional view taken along line A-A of Figure 5. Fig. 7 is an enlarged view of the 2-point chain line B shown in Fig. 6. Fig. 8 is an explanatory view showing an assembly procedure of the optical connector of the first embodiment. Fig. 9 is an explanatory view showing an assembly procedure of the optical connector of the first embodiment. Fig. 10 is an explanatory view showing an assembly procedure of the optical connector of the first embodiment. Fig. η is a view showing the assembly procedure of the optical connector of the first embodiment. Fig. 12 is an explanatory view showing an assembly procedure of the optical connector of the first embodiment. Fig. 13 is a side sectional view showing the optical connector of the second embodiment. Fig. 14 is a perspective view of (a) of the collet of the second embodiment, and Fig. 14 is a side cross-sectional view of (b). 163078. Doc •26·201250312 Fig. 15 is a side view of the side of the optical connector of the third embodiment. Fig. 16 is a perspective view of (a) of the chuck of the third embodiment, and Fig. 16 is a side sectional view of Fig. (b). Fig. 1 is a side sectional view showing the optical connector of the fourth embodiment. Fig. 18 is a perspective view of (a) of the collet of the fourth embodiment, and (b) is a side sectional view of the same. [Explanation of main component symbols] 10 Optical connector 10a Optical connector 11 Holding member 11a Inserting hole lib Opening portion 11c Storage portion lid Through hole lie Rectangular portion lie, inclined surface lle2 Inclined surface 12 Collimating lens 13 Inserting optical fiber 13a Core material 13b Cladding layer 13c reinforcing layer 14 resin joint 14a insertion hole 14b opening portion 14c flange 163078. Doc 201250312 14d First cylindrical portion 14e Second cylindrical portion 14f Engaged portion 14g Positioning portion 14h Holding region 14i Tapered region 14j Notched portion 15 Chuck 15a Slit 15b Engagement portion 15c Flange 15d Optical fiber holding portion 16 Cover 16a convex portion 16b sheath holding portion 17 sheath 18 metal member 24 resin joint 24a cylindrical portion 25 chuck 25a front end portion 25b rear end portion 25c optical fiber holding portion 34 resin joint I63078. Doc 201250312 34a First cylindrical portion 34b Second cylindrical portion 34c Notched portion 35 Chuck 35a Large diameter portion 35b Small diameter portion 35c Slit 35d Flange 35e Optical fiber holding portion 36 Pressing member 36a Flange 40 Optical connector 44 Resin joint 44a First tubular portion 44b Second tubular portion 44c Tapered portion 45 Chuck 45a Small diameter portion 45b Large diameter portion 45c Slit 45d Optical fiber holding portion 100 Device 101 Light receiving/light emitting element 102 Housing · 29· 163078. Doc 201250312 103 104 105 105a Condenser lens Oblique grinding surface Opening part Fastening part 163078. Doc