1374296 九、發明說明： 【發明所屬之技術領域】 本發明涉及一種光纖連接器。 【先前技術】 光纖連接器係光通信系統中不可缺少之接續性光無 源器件，隨著光通信技術之日益發展，光纖連接器被大量 應用於光纖與光纖、光纖與儀器之連接中，其性能對光通 信系統產生很大影響。 請參閱圖1 ’所示係一種習知之光纖連接器1〇〇。光 纖連接器1〇〇包括前殼ίο、套管η、法蘭12、彈簧13及 後殼14。 前殼ίο包括一長條狀中空本體1〇1。本體1〇1外側壁 一端延伸形成一閃臂103而另一端形成第一卡合部1〇7。 該第一卡合部107用於與後殼14相配合，且該卡合部1〇7 上開設有鎖合孔1071。並且，該本體1〇1内侧形成一凸 (圖未示）。 後喊14包括一長條狀中空本體141。該本體141其中 一端形成一第二卡合部142而另一端形成一光纖入口邱 143。第二卡合部142可與該第一卡合部1〇7相配合以將前 殼10與後殼14固定於一起。該第二卡合部142形成有可 與鎖合孔1071相配合之卡合凸起1423。 裝配時，法蘭12固持套管u，光纖（圖未示）自 纖入口部1U穿過後殼14之本體141及彈簧13之簧 固定於法蘭u及套管u内。第二卡合部142插入第—卡 7 1374296 合部107内且使凸起1423與鎖合孔1071配合，此時，彈 簧13之一端抵持後殼14而另一端抵持法蘭12並使法蘭抵 持本體101内側之凸起105，從而使彈簧13、法蘭12及套 管11被收容於前殼10與後殼14所形成之空腔内。 前殼10 —般係藉由塑膠射出成型製備，且由於前殼 10包括本體101及閂臂103，為便於射出成型過程中熔融 樹脂材料之流動，射出成型時之澆口一般需設置於鄰近閂 臂103之一端，以便成型時熔融樹脂材料在流動時流經較 _ 短之距離而加快成型速度並減少成型縮水尺寸。 如是，熔融材料自遠離鎖合孔1071之一端向鎖合孔 1071之一端流動，而成型模具於形成鎖合孔1071之對應 位置係一凸起，如是，熔融材料流至該凸起處被分離成兩 支分流，兩支分流繞過凸起後會合形成位於鎖合孔1071 邊緣之熔接線108，且該熔接線108從鎖合孔1071出發沿 前殼14之長度方向方向延伸至第一卡合部107端面。 組裝時，在第二卡合部142插入第一卡合部107之過 鲁程中，第二卡合部142擠壓第一卡合部107並使第一卡合 部107之侧壁内產生拉應力，且熔接線108之延伸方向與 . 拉應力之方向垂直，常常導致前殼10於熔接線108處開裂 • 而導致產品報廢。 【發明内容】 鑒於以上内容，有必要提供一種不易開裂之光纖連接 1374296 .一種光纖連接器’其包括第-殼體及第二殼體，第一 设體包括長條狀之中空本體及自該長條狀之中空本體 .一端延伸形成之„臂，與„相對之中空本體之另一端 成有第一卡合部，該第一卡合部上開設有至少一鎖合孔， =二殼體其端形成與該第—卡合部相配合之第二卡 合部，該第二卡合部形成有可與該鎖合孔相配合之鎖合凸 起，該中空本體上形成有鄰近該至少一鎖合孔之炫接線， 且該熔接線之延伸方向與第一殼體之長度方向垂直。 # 上述光纖連接器中，第一殼體熔接線之延伸方向與第 一殼體長度方向垂直，當第二殼體之第二卡合部插入第一 殼體之第一卡合部時，第二卡合部擠壓第一卡合部外壁使 其產生拉應力，且此拉應力方向與熔接線延伸方向一致， 故不易發生開裂現象。 【實施方式】 下面將結合附圖及實施例對本發明之光纖連接器作 鲁進一步詳細說明。 請參閱圖2 ’其為本發明較佳實施例之光纖連接器 • 200。該光纖連接裔200包括前殼20、套管21、法蘭22、 彈簧23及後殼24。 再請參閱圖3及圖4’前殼20包括一長條狀中空本體 201。該中空本體201之截面呈方形且該中空本體包括四相 互連接之側壁。本體201其中一側壁一端向本體201長度 方向延伸形成一閂臂203而本體201之另一端形成第一卡 9 1374296 合部205。該閂臂203具有一凸起2031，以便光纖連接器 200插入適配器（圖未示）時，閂臂203之凸起2031與適 配器上之凹槽配合，將光纖連接器200與適配器固定。該 第一卡合部205用於與後殼24相配合，且該第一卡合部 « 205上開設有相對之鎖合孔2051及一溝槽2053。鎖合孔 2051位於與閂臂203相鄰之側壁上且該鎖合孔2051為方 形。該溝槽2053開設於閂臂203所在之本體201之側壁上 且其延伸方向與本體201長度方向相同。並且，該本體201 φ 内側形成一凸起2〇7。 套管21呈柱狀，其開設有一容納光纖之通孔211。 法蘭22包括一底座221及自該底座221 —端延伸形 成之一導柱223。底座221上開設有用以固定套管21之開 口（圖未標），導枉223内部開設有用以容納光纖之通孔 227，該通孔227與套管21之開口相連通。 後殼24包括一長條狀方形本體241。該本體241其中 一端形成一第二卡合部242而另一端形成一光纖入口部 鲁 243。第二卡合部242可與該第一卡合部205相配合以將前 殼20與後殼24固定在一起。第二卡合部242之内側形成 . 有用以固定彈簧23之開口 2425而外側形成有兩相對之卡 合凸起2423，該卡合凸起2423可與鎖合孔2051相配合。 光纖入口部243呈柱形且一端與本體241相連。後殼24 内部開設有收容光纖之通孔245，該通孔245貫穿光纖入 口部243及後殼24之本體241並與開口 2425連通，後殼 24内部在通孔245與開口 2425交接處形成一肩部247。 1374296 另，本體241之外壁延伸形成一握持部2411以方便光纖連 接器200與適配器配合時之手動插拔。 裝配時，套管21固設於法蘭22之開口，光纖（圖未 示）依次穿過後殼24之通孔245、彈簧23簧圈、法蘭22 之通孔227及套管21之通孔211，並固定於套管21通孔 211内。彈簧23套設於法蘭22之導柱223上，且與導柱 223 —起被收容於第二卡合部242之開口 2425内。後殼24 之第二卡合部242插入前殼20之空腔時，溝槽2053彈性 籲張開並使卡合凸起2423與鎖合孔2051對應卡合。此時， 彈簧23—端偏壓法蘭底座22使之抵持前殼20之内部凸起 207，彈簧23之另一端抵持肩部247。且使套管21可以沿 前殼20之長度方向滑動。 前殼20係塑膠材質，藉由雙澆口注射一體成型，將 兩澆口相隔一定距離地設於前殼20之與閂臂203相對之側 面上，並保證至少有一澆口位於鎖合孔2051正上方附近。 然後將熔融之塑膠由澆口注入模腔，熔融之塑膠將由澆口 ® 位置流向鎖合孔2051位置。由於模腔内對應於鎖合孔2051 之位置為一凸起，如是，熔融塑膠流被凸起分割成兩支流 . 並繞過凸起而會合，其會合之位置冷卻後即形成熔接線 208。該熔接線208從鎖合孔2051出發沿垂直於前殼20 本體201之長度方向延伸。 在第二卡合部242插入前殼20空腔時，第二卡合部 • 242擠壓第一卡合部205外壁並使其產生拉應力，由於熔 接線208由鎖合孔2051附近出發沿垂直於前殼20長度方 11 1374296 向延伸，第一卡合部205外壁拉應力方向與熔接線延伸方 向一致，且溶接線208與第--^合部205端面沒有交點， 所以第一卡合部205端面所有位置強度都較高，故不易發 由於注射時採用雙澆口，每一澆口材料注射量遠小於 單澆口注射時之注射量，故其成型後所形成之料頭报小，' 開模時就被滑塊自動清除，無需進行額外之料頭切除程 式，生產比較方便，同時亦降低了成本。 可以理解，第一卡合部205亦可設置於後殼24，第二 卡合部242亦可設置於後前殼2〇，即假設前殼2〇係第: 殼體而後殼24係第二殼體，則第一卡合部2〇5既可設置於 第一殼體，亦可設置於第二殼體；若假設後殼24為第—殼 體而刖殼20係第二殼體’則第一卡合部2〇5既可設置於第 一殼體’亦可設置於第二殼體。 可以理解，還可採用二個以上之洗口成型亦可達到相 同效果。 綜上所述，本發明符合發明專利要件，爰依法提出專 利申請。惟，以上所述者僅為本發明之較佳實施例，本發 明之範圍並不以上述實施方式為限，舉凡熟悉本案技藝^ 人士，在爰依本發明精神所作之等效修飾或變化，皆應涵 蓋於以下之申請專利範圍内。 【圖式簡單說明】 系：？習知之光纖連接器之立體分解示意圖。 圖’糸本發明較佳之實施例之光纖連接器之立體分解 12 1374296 示意圖。 圖3係圖2所示光纖連接器之剖面圖。 圖4係圖2所示光纖連接器另一角度之刮面圖。 【主要零件符號說明】 (本發明）1374296 IX. Description of the Invention: [Technical Field of the Invention] The present invention relates to a fiber optic connector. [Prior Art] Optical fiber connectors are indispensable continuous optical passive devices in optical communication systems. With the development of optical communication technologies, optical fiber connectors are widely used in the connection of optical fibers and optical fibers, optical fibers and instruments. Performance has a large impact on optical communication systems. Referring to Figure 1 ', a conventional fiber optic connector 1 is shown. The optical fiber connector 1 includes a front case ίο, a sleeve η, a flange 12, a spring 13, and a rear case 14. The front case ίο includes a long strip-shaped hollow body 1〇1. The outer side wall of the body 1〇1 extends to form a flashing arm 103 at one end and the first engaging portion 1〇7 at the other end. The first engaging portion 107 is configured to cooperate with the rear case 14 , and the engaging portion 1 7 is provided with a locking hole 1071 . Further, a convex portion (not shown) is formed inside the body 1〇1. The rear shout 14 includes an elongated hollow body 141. The body 141 has a second engaging portion 142 at one end and a fiber entrance 143 at the other end. The second engaging portion 142 can cooperate with the first engaging portion 1〇7 to fix the front case 10 and the rear case 14 together. The second engaging portion 142 is formed with an engaging projection 1423 that can engage with the locking hole 1071. During assembly, the flange 12 holds the sleeve u, and the optical fiber (not shown) is fixed from the fiber inlet portion 1U through the body 141 of the rear case 14 and the spring of the spring 13 to the flange u and the sleeve u. The second engaging portion 142 is inserted into the engaging portion 107 of the first card 7 1374296 and the projection 1423 is engaged with the locking hole 1071. At this time, one end of the spring 13 abuts against the rear case 14 and the other end abuts the flange 12 and The flange abuts the projection 105 on the inner side of the body 101 such that the spring 13, the flange 12 and the sleeve 11 are received in the cavity formed by the front case 10 and the rear case 14. The front case 10 is generally prepared by plastic injection molding, and since the front case 10 includes the body 101 and the latch arm 103, in order to facilitate the flow of the molten resin material during the injection molding process, the gate during injection molding is generally disposed adjacent to the latch. One end of the arm 103 allows the molten resin material to flow over a relatively short distance while flowing to speed up the forming speed and reduce the size of the formed shrinkage. If so, the molten material flows from one end away from the locking hole 1071 toward one end of the locking hole 1071, and the molding die is convex at a corresponding position forming the locking hole 1071, and if so, the molten material flows to the convex portion to be separated. Two shunts are formed, and the two shunts pass around the protrusions to form a weld line 108 at the edge of the lock hole 1071, and the weld line 108 extends from the lock hole 1071 along the length direction of the front case 14 to the first card. End face 107. During assembly, when the second engaging portion 142 is inserted into the first engaging portion 107, the second engaging portion 142 presses the first engaging portion 107 and generates the side wall of the first engaging portion 107. The tensile stress, and the direction in which the weld line 108 extends is perpendicular to the direction of the tensile stress, often causes the front case 10 to crack at the weld line 108. SUMMARY OF THE INVENTION In view of the above, it is necessary to provide an optical fiber connection 1374296 that is not easily cracked. A fiber optic connector includes a first housing and a second housing, the first housing comprising an elongated hollow body and a long strip-shaped hollow body. One end extends to form an arm, and the opposite end of the hollow body has a first engaging portion, and the first engaging portion is provided with at least one locking hole, and the second housing The second engaging portion is formed with the second engaging portion, and the second engaging portion is formed with a locking protrusion that can cooperate with the locking hole, and the hollow body is formed adjacent to the at least a locking wire, and the extending direction of the welding wire is perpendicular to the longitudinal direction of the first casing. In the above optical fiber connector, the extending direction of the first housing weld line is perpendicular to the longitudinal direction of the first housing, and when the second engaging portion of the second housing is inserted into the first engaging portion of the first housing, The two engaging portions press the outer wall of the first engaging portion to generate tensile stress, and the tensile stress direction is consistent with the extending direction of the welding wire, so that cracking is less likely to occur. [Embodiment] Hereinafter, the optical fiber connector of the present invention will be further described in detail with reference to the accompanying drawings and embodiments. Please refer to FIG. 2, which is a fiber optic connector of the preferred embodiment of the present invention. The fiber optic connection 200 includes a front case 20, a sleeve 21, a flange 22, a spring 23, and a rear case 24. Referring again to Figures 3 and 4, the front housing 20 includes an elongated hollow body 201. The hollow body 201 has a square cross section and the hollow body includes four side interconnected side walls. One end of one side wall of the body 201 extends toward the length of the body 201 to form a latch arm 203, and the other end of the body 201 forms a first card 9 1374296 joint 205. The latch arm 203 has a projection 2031 so that when the fiber optic connector 200 is inserted into an adapter (not shown), the projection 2031 of the latch arm 203 mates with a recess in the adapter to secure the fiber optic connector 200 to the adapter. The first engaging portion 205 is configured to cooperate with the rear casing 24, and the first engaging portion «205 is provided with an opposite locking hole 2051 and a groove 2053. The locking hole 2051 is located on a side wall adjacent to the latch arm 203 and the locking hole 2051 is square. The groove 2053 is formed on the side wall of the body 201 where the latch arm 203 is located and extends in the same direction as the length direction of the body 201. Moreover, a protrusion 2〇7 is formed on the inner side of the body 201 φ. The sleeve 21 has a columnar shape and defines a through hole 211 for accommodating the optical fiber. The flange 22 includes a base 221 and a guide post 223 extending from the end of the base 221 . An opening (not shown) for fixing the sleeve 21 is defined in the base 221, and a through hole 227 is formed in the guide 223 for accommodating the optical fiber. The through hole 227 communicates with the opening of the sleeve 21. The rear case 24 includes an elongated square body 241. The body 241 has a second engaging portion 242 at one end and a fiber entrance portion 243 at the other end. The second engaging portion 242 can cooperate with the first engaging portion 205 to fix the front case 20 and the rear case 24 together. The inner side of the second engaging portion 242 is formed. There is an opening 2425 for fixing the spring 23, and two opposite engaging projections 2423 are formed on the outer side, and the engaging protrusions 2423 can be engaged with the locking holes 2051. The fiber entrance portion 243 has a cylindrical shape and one end is connected to the body 241. A through hole 245 for receiving an optical fiber is formed in the rear casing 24. The through hole 245 extends through the fiber inlet portion 243 and the body 241 of the rear casing 24 and communicates with the opening 2425. The interior of the rear casing 24 forms a junction between the through hole 245 and the opening 2425. Shoulder 247. 1374296 In addition, the outer wall of the body 241 extends to form a grip portion 2411 to facilitate manual insertion and removal of the fiber optic connector 200 when mated with the adapter. During assembly, the sleeve 21 is fixed to the opening of the flange 22, and the optical fiber (not shown) sequentially passes through the through hole 245 of the rear case 24, the spring 23 coil, the through hole 227 of the flange 22, and the through hole of the sleeve 21. 211, and is fixed in the through hole 211 of the sleeve 21. The spring 23 is sleeved on the guide post 223 of the flange 22 and is received in the opening 2425 of the second engaging portion 242 together with the guide post 223. When the second engaging portion 242 of the rear case 24 is inserted into the cavity of the front case 20, the groove 2053 is elastically opened and the engaging protrusion 2423 is engaged with the locking hole 2051. At this time, the spring 23 end biases the flange base 22 against the inner projection 207 of the front case 20, and the other end of the spring 23 abuts the shoulder 247. And the sleeve 21 can be slid along the length of the front case 20. The front shell 20 is made of a plastic material, and is integrally formed by double gate injection, and the two gates are disposed at a distance from the opposite side of the front shell 20 opposite to the latch arm 203, and at least one gate is located at the locking hole 2051. Near the top. The molten plastic is then injected into the mold cavity from the gate, and the molten plastic will flow from the gate ® position to the position of the lock hole 2051. Since the position of the cavity corresponding to the locking hole 2051 is a protrusion, if the molten plastic flow is divided into two streams by the protrusion, and the protrusion is merged around the protrusion, the position of the meeting is cooled to form the weld line 208. The weld line 208 extends from the lock hole 2051 in a length direction perpendicular to the body 201 of the front case 20. When the second engaging portion 242 is inserted into the cavity of the front casing 20, the second engaging portion 242 presses the outer wall of the first engaging portion 205 and causes tensile stress thereof, since the welded wire 208 is caused by the vicinity of the locking hole 2051. The direction of the tensile force of the outer wall of the first engaging portion 205 is consistent with the extending direction of the welding wire, and the melting wire 208 has no intersection with the end surface of the first portion 205, so the first engagement is performed. The strength of all the positions of the end face of the part 205 is relatively high, so it is not easy to send. Because the double gate is used during the injection, the injection amount of each gate material is much smaller than the injection amount when the single gate is injected, so the material formed after the molding is small. , 'The slider is automatically cleared when the mold is opened, no additional head cutting program is needed, the production is convenient, and the cost is also reduced. It can be understood that the first engaging portion 205 can also be disposed on the rear casing 24, and the second engaging portion 242 can also be disposed on the rear front casing 2, that is, the front casing 2 is assumed to be the first casing and the rear casing 24 is the second casing. For the housing, the first engaging portion 2〇5 may be disposed on the first housing or the second housing; if the rear housing 24 is assumed to be the first housing and the housing 20 is the second housing The first engaging portion 2〇5 can be disposed in the first housing or in the second housing. It will be appreciated that more than two washouts can be used to achieve the same effect. In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and those skilled in the art will be equivalently modified or changed in accordance with the spirit of the present invention. All should be covered by the following patent application. [Simple description of the diagram] Department:? A schematic exploded view of a conventional fiber optic connector. Figure 3 is a schematic exploded view of a fiber optic connector of a preferred embodiment of the present invention 12 1374296. Figure 3 is a cross-sectional view of the fiber optic connector of Figure 2. Figure 4 is a plan view of another angle of the fiber optic connector of Figure 2. [Main part symbol description] (Invention)
光纖連接器 200 前殼 20 本體 201 閂臂 203 第·—^合部 205 凸起 2031 ' 207 鎖合孔 2051 溝槽 2053 熔接線 208 套管 21 法蘭 22 通孔 211、227、245 後柱 223 底座 221 彈簧 23 後殼 24 後殼本體 241 第二卡合部 242 握持部 2411 卡合凸起 2423 開口 2425 光纖入口部 243 肩部 247 13Fiber Connector 200 Front Case 20 Body 201 Latch Arm 203 Section 205 Bump 2031 ' 207 Lock Hole 2051 Groove 2053 Fuse 208 Bushing 21 Flange 22 Through Hole 211, 227, 245 Rear Column 223 Base 221 spring 23 rear case 24 rear case body 241 second engaging portion 242 grip portion 2411 engaging projection 2423 opening 2425 fiber entrance portion 243 shoulder portion 247 13