M443302 五、新型說明： 【新型所屬之技術領域】 ，特別是指一種線 本新型是有關於一種線境連接器 纜電連接器中的殼體結構。 【先前技術】M443302 V. New description: [New technical field], especially a kind of wire. The present invention relates to a housing structure in a wire connector cable electrical connector. [Prior Art]
線欖連接^是㈣日益小型化的方向發展，因此在 將固持部件（如卡扣元件等）組裝到料連接器的絕緣 殼體時也經常會面臨裝配空間不足的問題。如先前的中 國大陸專利ZL200820009514.3揭露了一種線纜連接器， 其包括：一絕緣殼體，其前端設置有多個導電部，其後 端設有與這些導電部電性連接的線纜；該絕緣殼體的一 侧面上設有沿前後方向延伸的一滑槽，該滑槽的兩側各 設有一導溝，該滑槽内設有一擋塊，以及一裝設在該絕 緣殼體上的卡扣元件，該卡扣元件包括一基部、從基部 的一端反向彎折延伸而成的一彈性卡扣部以及從該彈性 卡扣部的另一端延伸出的一按壓部，該基部的兩侧對應 固定在該絕緣殼體滑槽兩侧的導溝内；該絕緣殼體的擋 塊朝向後端的一側設有一第一斜面；該卡扣元件的基部 向下延伸出一定位彈片；該定位彈片具有可相對於該基 部上下彈性活動的活動端，該定位彈片的活動端抵頂在 該絕緣殼體擋塊的第一斜面上，以防止該卡扣元件向前 滑出脫離該絕緣殼體。這種卡扣元件固定結構雖然可以 降低絕緣殼體的整體長度有利於產品小型化，但由於其 需要在連接器的前端開設一開放的滑槽來組裝該卡扣元 3 M443302 件，將會降低上舌板的結構強度，導致上舌板較易折 斷。可見，實有必要對現有的線纜連接器的結構予以進 一步改進。 【新型内容】 本新型所要解決的技術問題在於克服上述現有技術 存在的不足’而提出一種線纜連接器，其符合線镜連接 器小型化的發展方向，並且結構強度較好，製造與組裝 也較為簡便。 本新型針對上述技術問題而提出一種線纜連接器，· 包括一對接電路板及一線纜，該對接電路板其前部設有 若干對接觸點、後部設有若干焊接點；該線镜具有一連 接·^和由該連接段的後端向上彎折延伸出的一彎折延伸 段’該連接段的前端是對應焊接在該對接電路板的谭接 點上；該線纜連接器還包括一第一殼體、一第二殼體， 及一扣持彈片’該第一殼體包括有一第一内殼和一第一 外设，該第一内殼包覆成型在該線纜的連接段與對接電 路板的焊接點外周，該第一外殼再次包覆成型在該第一· 内A3C的外周，並具有位在别方的一對接部位在後方的 一結合部以及位在上表面的前端封閉後端開放的一容 置槽；該第二殼體包括有—第二内殼和一第二外殼，該 第二内殼是包覆成型在該線纜的彎折延伸段外周以固定 出線方向’其具有一水平結合部和一彎折延伸部，該水 平結合部與該第一外殼的結合部相配合，該彎折延伸部 包覆成型在該線瘦的弯折延伸段外周，該第二外殼再次 4 M443302 包覆成型在該第二内殼的外周；該扣持彈片沿水平方向 設置有多個卡固突部，該扣持彈片是從後向前插置卡固 在該第一外殼的容置槽中》 該第一内殼與該第二内殼是選用成型壓力及溫度較 低的材料包覆成型的，該第一外殼與該第二外殼是選用 成型壓力及溫度較高的材料包覆成型的。 該第一内忒與該第二内殼是PE材質的，該第一外殼 與該第二外殼是PBT或ABS材質的。 該第一外殼的結合部上設置有凹陷不平的二咬合結 構，該第二内殼與該第-外殼的二咬合結構結合在一 起0 該扣持彈片包括-基部以&由該基部的前端反向彎 折延伸而成的一彈性卡扣部，該基部的兩側水平向外突 伸有所述的多個卡固突部，這些卡固突部是對應卡設固 定在該第一外殼的容置槽内。 該扣持彈片還進- #包括由該彈性卡扣部延伸出的 -按壓部，以及由該按壓部延伸出的一尾部，該尾部的 兩側各向外突伸有一限位部；該第一外殼上的容置槽包 括一第一配接槽以對應卡固收容該扣持彈片的基部，和 一第二配接槽以對應收容該扣持彈片的限位部並可供該 扣持彈片的尾部在其内上下活動。 該第二外殼也具有一水平結合部，和從該水平結合 -P垂直向上延伸出的—彎折延伸部，該容置槽與該第二 外殼的f折延伸部前後„，並且該第：外殼的彎折延 5 M443302 伸部的前表面與該容置槽的後端之間的前後距離小於該 扣持彈片沿前後方向的長度。 該對接電路板的兩側各設置有一定位孔，該第一内 殼和第一外殼上均形成有相應的二定位孔並分別與該對 接電路板的二定位孔相貫通。 該第一外殼包括包覆在該第一内殼外周的一本體， 及由該本體的前端向前延伸出的一上舌板和一下舌板， 該對接電路板是向前伸出於該第一外殼的本體並位在該 上舌板與該下舌板之間。 該第一外殼還包括由該本體後端中部向後延伸出的 一突出部，所述的結合部是由該本體向後延伸出並包括 凹a又置於該突出部的兩側的兩部分，每部分上均設置 有凹陷不平的一咬合結構。 與現有技術相比’本新型的線纜連接器的有益效果 包括：通過先成型一第一殼體，並在該第—殼體上成型 後端開放的谷置槽’在將扣持彈片從後向前插置卡固到 該容置槽中後再在該第一殼體後端成型一第二殼體，本 線镜連接器不需要如現有技術那樣在上舌板上設置前端 開放的槽道’其結構強度較好’並且製造與組裝也較為 簡便。 【實施方式】 有關本新型之前述及其他技術内容、特點與功效， 在以下配合參考圖式之一個較佳實施例的詳細說明中， 將可清楚地呈現。 6 M443302 參見圖1至圖8，本新型線纜連接器的一較佳實施例 包括：-對接電純卜_線纜2、一第一殼體一扣持 彈片5,及-第二殼體。第一殼體包括一第一内殼3與一 第-外殼4 ;第二殼體包括一第二内殼6以及一第二外 殼7 〇 參見圖7和圖8，該對接電路板1包括設置在其前 部，也就是對接端的若干對接觸點U以及設置在其後部 的若干焊接點12;該對接電路板！的兩侧還各設置有一 個定位孔16。 該線纜2的外形i L开），其包括若干導電線，每根 導電線具有連接段21和由該連接段21的後端豎直向 上彎折延伸出[彎折延伸段⑴料接段21的前端是 對應焊接在該對接電路板丨後部的焊接點12上。 參見圖6、圖7和圖8，該第一内殼3是pe (polyurethane聚氨基曱酸酯）材質製成，其包覆成型在 該線纜2的連接段21與對接電路板丨的焊接點12外 周，以防止外力對連接處造成損壞，其中pE材料注塑成 型時的壓力和溫度較低，有利於減少成型工藝對連接處 造成的損害。該第一内殼3具有包覆在該線纜2的連接 段21上的一本體31和由該本體31的前端向前延伸出的 一上封板32和一下封板33，該上封板32包覆在該對接 電路板1的上側，該下封板33包覆在該對接電路板i的 下側。該上封板32和下封板33的兩側各形成有一定位 孔36 ’參見圖3，各個定位孔36與對應的該對接電路板 7 M443302 1的定位孔16相貫通，其可供成型該第一内殼3時年塑 模具上的定位柱（圖未示）穿設於其内，從而準破固定 該第一内殼3與對接電路板1的相對位置以精確成型。 參見圖3、圖6、圖7和圖8，該第一外殼4是pbt (polybutylece terephthalate 聚對苯二甲酸 丁二酿）材質 製成或者 ABS( Acrylonitrile butadiene styrene 丙稀猜 _ 丁二烯-苯乙烯）材質製成’其中PBT或ABS材料注塑成 型時的壓力和溫度較高’但具有較好的物理特性可以使 線繞連接器經久耐用。該第一外殼4再次包覆成型在該鲁 第一内殼3的外周，其包括包覆在該第一内殼3外周的 一本體47、由該本體47的前端上下兩側向前延伸出的一 上舌板48和一下舌板49、位在前方的一對接部41、位 在後方的一結合部42以及位在該第一外殼4上表面44 的前端封閉、後端開放的一容置槽43。該對接電路板i 是向前伸出於該本體47並位在上舌板48與下舌板49之 間。該第一外殼4還包括由該本體47後端中部向後延伸 出的一突出部45，該結合部42由該本體47向後延伸出· 並包括凹陷設置於該突出部45的兩側的兩部分，每部分 均設置有凹陷不平的一咬合結構421。該容置槽43包括 設置在前端的第一配接槽431和設置在後端並進一步向 兩側凹陷的第二配接槽432 »該本體47的兩側各形成有 定位孔46，參見圖3，各個定位孔46也是與對應的該 對接電路板1的定位孔16相貫通的，其可供成型該第一 外殼4時注塑模具上的定位柱（圖未示）穿設於其内。 8 參見圖4與圖6,該扣持彈月5包括一基部51、由 該基部51㈣端反向彎折延伸而成的一彈性卡扣部 由該彈性卡扣杳"2的另一端延伸出的一按塵部Μ以及 由該按壓部53的另一端延伸出的一尾部54。該基部51 的兩側沿水平方向向外突伸出多個卡固突冑5ιι，該尾部 54的兩側各向外突伸有_限位部54卜該基部η的卡固 突部5Η對應卡固在該第一外殼4上的容置槽43的第一 :接槽431中’該尾部54的限位部541可上下活動地收 容在該第一外殼4上的第二配接槽432中。 參閱圖4、圖5與圖8，該第二内殼6是ρΕ材質製 成其包覆成型在s玄線纜2的外周以固定出線方向，其 具有一水平結合部61和一彎折延伸部62。該水平結合部 61與第夕卜殼4的結合部42對應配合在一起，其與第一 外成4的一咬合結構421結合在—起從而獲得較好的結 合效果。該彎折延伸部62對應包覆成型在該線纜2的彎 折延伸段22的外周。 該第二外殼7是ABS或PBT材質的，其再次包覆成 型在該第二内㉟6外周，其也具有一水平結合部η和從 該水平結合部71向上垂直延伸而出的—彎折延伸部72， 該容置槽43與該第二外殼7的彎折延㈣72呈前後相 對設置’該第二外殼7的彎折延伸部72的前表面73與 該容置槽43㈣端之間的前後距離小於該扣持彈片$沿 前後方向的長度以達到小型化的目的，在其他的一些實 施例中彎折延伸部的前表面還可以與該容置槽的後端相 M443302 貼接以最大程度地縮短殼體的總體長度（圖未示）。需要 說明的是，該第二内殼6的水平結合部61以及第二外殼 7的水平結合部71被第一外殼4上的突出部45分割為兩 部分，從而可以防止第二殼體冷卻成型後由於收縮率不 同導致在第一殼體與第二殼體之間的結合處出現毛邊， 及縮水等問題。先由PE材料製成的第二内殼6有利於減 少對導線的彳貝害’且在該第二内殼6外周成型第二外殼7 可使線纜連接器經久耐用；另外，雖然在本優選實施例 中’因為該線缓2的連接段21與彎折延伸段22是大致 垂直彎折的’所以該第一殼邊的水平結合部61、71與弯 折延伸部62、72也相應地是大致垂直的，而在其他實施 例中，當該線纜2的連接段21與彎折延伸段22相交成 不等於90度的夾角（如70度、12〇度）時，該第二殼體 的水平結合部61、71與彎折延伸部62、72也相應地可 以是不等於90度的夾角而傾斜地彎折延伸的（圖未 示）。 本新型的線纜連接器的製造過程大致包括： 先將線纜2中的各導電線對應焊接到對接電路板】 的各個焊接點12;再在該對接電路板丨上下兩侧及該線 纜2的連接段21外周包覆成型該第一内殼3;接著在該 第一内殼3的外周再次包覆成型該第一外殼4 ;然後將該 扣持彈片5從後往前地插入裝設到該第一外殼4的容置 槽43中；接著將線纜2進行彎折以形成該彎折延伸段 22，並在該第一外殼4的後部包覆成型該第二内殼6 ;最 10 後在該第二内殼6外周包覆成型該第二外殼7。 與現有技術相比，本新型的線纜連接器的有益效果 包括：通過在料有線纜2㈣接f路板丨的外周先成 型第-殼體’組裝上扣持彈片5後再在第一殼體後端成 里呈L形的第二殼體’這種連接器結構可以解決產品小 型化後該第二外殼7的彎折延伸冑72的前表面73與該 容置槽43的後端之間的前後距離不足導致在第一殼體與 第二殼體完全成型後無法裝入該扣持彈片5的難題，並 且也不需要如現有技術那樣在上舌板上設置前端開放的 槽道，其結構強度較好，製造工序也較為簡便。 惟以上所述者，僅為本新型之較佳實施例而已，當 不能以此限定本新型實施之範圍，即大凡依本新型申請 專利範圍及新型說明内容所作之簡單的等效變化與修 飾，皆仍屬本新型專利涵蓋之範圍内。 【圖式簡單說明】 圖1疋本新型線麗連接器一較佳實施例的立體圖; 圖2是本較佳實施例的俯視圖； 圖3是圖2中Z-Z向的剖面視圖； 圖4、圖5是本較佳實施例二個不同視角的立體分解 國， 圖6是本較佳實施例中對接電路板、線纜、第一殼體 以及扣持彈片的立體分解圖；及 圖7、圖8是本較佳實施例二個不同視角的進一步的 立體分解圖。 11 M443302 【主要元件符號說明】 1…… •…對接電路板 45·...· …·突出部 11 ·_.·· •…對接觸點 46···. •…定位孔 12·.··· •…焊接點 47·.·.· •…本體 16 •… •…定位孔 48….· •…上舌板 2…… …·線纜 49··..· •…下舌板 21••… •…連接段 5…… •…扣持彈片 〇 〇..... ...·撒Ζ.ί 乂山仍 C 1..... ____立 LL..... .....嘗祈延彳甲"f又 J 1 丞〇卩 3…… —第内设 511… •…卡固突部 31••… •…本體 52••… •…彈性卡扣部 32···.. •…上封板 53••… •…按壓部 33••… •…下封板 54···_. •…尾部 36·...· •…定位孔 541… •…限位部 ____势 C ...... ____楚—Λ奶 4...... 弟 外汰 0 矛"一 ri %x. 41 •…對接部 61•.… ····水平結合部 • · · ·会士人加 c ο..... ....J# 4ζ..... 0 ^ ^ ^ 1Τ ΰΓ 421… •…咬合結構 7…… •…第二外殼 43••… •…容置槽 71 ··.·. •…水平結合部 431… •…第一配接槽 72……· …·彎折延伸部 432… •…第二配接槽 73••… —刖表面 44…… •…上表面 12The wire connection is a direction in which (4) is increasingly miniaturized, and therefore, when the holding member (such as a snap member) is assembled to the insulating case of the material connector, the assembly space is often insufficient. A cable connector is disclosed in the prior art, which comprises: an insulative housing having a plurality of conductive portions disposed at a front end thereof, and a cable electrically connected to the conductive portions at a rear end thereof; A sliding slot extending in the front-rear direction is disposed on one side of the insulating housing, and a guiding groove is disposed on each side of the sliding slot, a stopper is disposed in the sliding slot, and a slot is disposed on the insulating housing a snap element comprising a base portion, an elastic snap portion extending in a reverse direction from one end of the base portion, and a pressing portion extending from the other end of the elastic buckle portion, the base portion The two sides of the insulating housing are disposed on a side of the sliding groove of the insulating housing; the first sliding surface of the insulating housing is opposite to the rear end; the base of the fastening component extends downwardly to a positioning elastic piece; The positioning elastic piece has a movable end elastically movable up and down with respect to the base portion, and the movable end of the positioning elastic piece abuts against the first inclined surface of the insulating housing block to prevent the fastening component from sliding forwardly out of the insulation case. Although the fastening component fixing structure can reduce the overall length of the insulating housing, which is advantageous for miniaturization of the product, it is required to be assembled by opening an open chute at the front end of the connector to assemble the latching member 3 M443302. The structural strength of the upper tongue plate makes the upper tongue plate easier to break. It can be seen that it is necessary to further improve the structure of the existing cable connector. [New content] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art described above and propose a cable connector which conforms to the development direction of the miniaturization of the wire mirror connector, and has good structural strength, manufacturing and assembly. It's easier. The present invention provides a cable connector for the above technical problem, comprising a pair of circuit boards and a cable, the docking circuit board is provided with a plurality of pairs of contact points at the front portion and a plurality of solder joints at the rear portion; the line mirror has a connecting portion ^ and a bent extension extending from the rear end of the connecting portion upwardly. The front end of the connecting portion is correspondingly soldered to the tan junction of the docking circuit board; the cable connector further includes a first housing, a second housing, and a latching elastic piece. The first housing includes a first inner casing and a first outer casing, and the first inner casing is overmolded to the cable. The outer periphery of the solder joint of the segment and the docking board, the first outer casing is overmolded again on the outer circumference of the first inner A3C, and has a joint portion at the rear of the other pair of joint portions and the upper surface The front end closes a receiving slot open at the rear end; the second housing includes a second inner casing and a second outer casing, and the second inner casing is overmolded on the outer periphery of the bent extension of the cable to fix Outlet direction 'It has a horizontal joint and a bend extension And the horizontal joint portion cooperates with the joint portion of the first outer casing, the bent extension portion is overmolded on the outer circumference of the thin bent extension portion, and the second outer casing is overmolded again in the second portion 4 M443302 The outer periphery of the inner casing; the fastening elastic piece is provided with a plurality of fastening protrusions in a horizontal direction, and the fastening elastic piece is inserted into the receiving groove of the first outer casing from the rear to the front. The second inner casing is overmolded with a material having a lower molding pressure and a lower temperature, and the first outer casing and the second outer casing are overmolded with a material having a higher molding pressure and a higher temperature. The first inner casing and the second inner casing are made of PE material, and the first outer casing and the second outer casing are made of PBT or ABS. The joint portion of the first outer casing is provided with a recessed two-biting structure, and the second inner shell is combined with the second snap-fit structure of the first outer casing. The fastening elastic piece includes a base portion and a front end of the base portion. a plurality of fastening protrusions protruding from the two sides of the base portion, wherein the two sides of the base portion protrude horizontally outwardly, and the plurality of fastening protrusions are correspondingly fixed to the first housing Inside the housing. The holding elastic piece further includes a pressing portion extending from the elastic locking portion, and a tail portion extending from the pressing portion, and a limiting portion is protruded outwardly from the two sides of the tail portion; The receiving slot of the housing includes a first mating slot for receiving and receiving the base portion of the latching elastic piece, and a second mating slot for receiving and retaining the limiting portion of the latching elastic piece. The tail of the shrapnel moves up and down within it. The second outer casing also has a horizontal joint portion, and a bent extension portion extending vertically upward from the horizontal joint -P, the accommodating groove and the f-fold extension portion of the second outer casing are front and rear, and the first: The front and rear distance between the front surface of the extending portion and the rear end of the receiving groove is smaller than the length of the locking elastic piece in the front-rear direction. The positioning circuit board is provided with a positioning hole on each side of the mating circuit board. The first inner casing and the first outer casing are respectively formed with corresponding two positioning holes and respectively penetrate with the two positioning holes of the docking circuit board. The first outer casing includes a body covering the outer circumference of the first inner casing, and An upper tongue and a lower tongue extending forward from the front end of the body, the docking board extending forwardly from the body of the first casing and between the upper tongue and the lower tongue. The first outer casing further includes a protrusion extending rearward from a central portion of the rear end of the body, the joint portion being two portions extending rearwardly from the body and including a concave a and two sides of the protruding portion. Partially provided with a bite knot The advantages of the cable connector of the present invention are as follows: by first molding a first housing, and forming a rear open valley groove on the first housing, the spring clip will be held Forming a second housing at the rear end of the first housing from the rear to the front and then inserting the second housing. The line mirror connector does not need to be provided with an open front end on the upper tongue plate as in the prior art. The channel 'is structurally strong' and is relatively simple to manufacture and assemble. [Embodiment] The foregoing and other technical contents, features and effects of the present invention are described in detail below with reference to a preferred embodiment of the drawings. 6 M443302 Referring to FIG. 1 to FIG. 8 , a preferred embodiment of the cable connector of the present invention comprises: a docking power cable _ cable 2, a first housing and a fastening spring clip. 5, and - a second housing. The first housing includes a first inner casing 3 and a first outer casing 4; the second casing includes a second inner casing 6 and a second casing 7 〇 see Figure 7 and 8, the docking circuit board 1 includes a front portion, that is, a butt end a pair of contact points U and a plurality of solder joints 12 disposed at a rear portion thereof; each of the two sides of the docking circuit board! is further provided with a positioning hole 16. The outer shape of the cable 2 is opened, which includes a plurality of conductive lines. Each of the conductive wires has a connecting portion 21 and is bent upwardly from the rear end of the connecting portion 21 to extend [the front end of the bent connecting portion (1) of the connecting portion 21 is corresponding to the soldering point 12 welded to the rear portion of the mating circuit board Referring to FIG. 6, FIG. 7, and FIG. 8, the first inner casing 3 is made of pe (polyurethane polyurethane) material, which is overmolded on the connecting portion 21 of the cable 2 and the docking circuit board. The outer periphery of the solder joint 12 is to prevent external force from causing damage to the joint, wherein the pressure and temperature of the pE material during injection molding are low, which is advantageous for reducing the damage caused by the molding process to the joint. The first inner shell 3 has a coating on the joint. a body 31 on the connecting portion 21 of the cable 2 and an upper sealing plate 32 and a lower sealing plate 33 extending forward from the front end of the body 31, the upper sealing plate 32 covering the docking circuit board 1 On the upper side, the lower sealing plate 33 is wrapped on the lower side of the docking circuit board i. A positioning hole 36 is formed on each of the two sides of the upper sealing plate 32 and the lower sealing plate 33. Referring to FIG. 3, each positioning hole 36 passes through the positioning hole 16 of the corresponding docking circuit board 7 M443302 1 , which can be used for molding. A positioning post (not shown) on the first inner casing 3 is inserted therein to accurately fix the relative position of the first inner casing 3 and the mating circuit board 1 for precise molding. Referring to FIG. 3, FIG. 6, FIG. 7 and FIG. 8, the first outer casing 4 is made of pbt (polybutylece terephthalate) or ABS (Acrylonitrile butadiene styrene). Ethylene) is made of 'PBT or ABS material with high pressure and temperature during injection molding' but has good physical properties to make wire-wound connectors durable. The first outer casing 4 is overmolded again on the outer circumference of the first inner casing 3, and includes a body 47 covering the outer periphery of the first inner casing 3, and extending forwardly from the upper and lower sides of the front end of the body 47. a lower tongue plate 48 and a lower tongue plate 49, a pair of joint portions 41 located at the front, a joint portion 42 positioned at the rear, and a front end closed at the front surface 44 of the first outer casing 4, and a rear end opening The slot 43 is placed. The docking board i projects forwardly from the body 47 and is positioned between the upper tongue 48 and the lower tongue 49. The first outer casing 4 further includes a protruding portion 45 extending rearward from a rear end portion of the main body 47. The joint portion 42 extends rearwardly from the main body 47 and includes two portions recessed on two sides of the protruding portion 45. Each part is provided with a bite structure 421 which is not flat. The accommodating groove 43 includes a first matching groove 431 disposed at the front end and a second matching groove 432 disposed at the rear end and further recessed toward the two sides. The positioning hole 46 is formed on each side of the body 47. 3, each of the positioning holes 46 is also penetrated with the corresponding positioning hole 16 of the docking circuit board 1, and the positioning post (not shown) on the injection mold can be inserted therein when the first outer casing 4 is formed. 8 and FIG. 6, the fastening spring 5 includes a base portion 51, and an elastic buckle portion extending from the base portion (four) end is bent and extended by the other end of the elastic buckle 杳" A pressed dust portion and a tail portion 54 extending from the other end of the pressing portion 53. A plurality of fastening protrusions 5 ιι are protruded from the two sides of the base portion 51 in the horizontal direction, and the two sides of the tail portion 54 protrude outwardly from the limiting portion 54 corresponding to the fixing protrusion 5 of the base portion η. The second mating slot 432 of the first housing 4 is movably received in the first slot 431 of the receiving slot 43 of the first housing 4 in. Referring to FIG. 4, FIG. 5 and FIG. 8, the second inner casing 6 is made of ρΕ material and overmolded on the outer circumference of the sinuous cable 2 to fix the outgoing direction, and has a horizontal joint portion 61 and a bend. Extension 62. The horizontal joint portion 61 is fitted to the joint portion 42 of the outer shell 4, and is joined with a bite structure 421 of the first outer shell 4 to obtain a better bonding effect. The bent extension 62 is overmolded correspondingly to the outer circumference of the bent extension 22 of the cable 2. The second outer casing 7 is made of ABS or PBT, and is overmolded again on the outer circumference of the second inner portion 356. It also has a horizontal joint portion η and a vertical extension extending from the horizontal joint portion 71. The portion 72, the accommodating groove 43 and the bending extension (four) 72 of the second outer casing 7 are disposed in a front-rear direction, and before and after the front surface 73 of the bent extension portion 72 of the second outer casing 7 and the accommodating groove 43 (four) end The distance is less than the length of the fastening elastic piece in the front-rear direction for miniaturization. In other embodiments, the front surface of the bending extension may also be attached to the rear end of the receiving groove M443302 to the maximum extent. The overall length of the housing is shortened (not shown). It should be noted that the horizontal joint portion 61 of the second inner casing 6 and the horizontal joint portion 71 of the second outer casing 7 are divided into two parts by the protruding portion 45 on the first outer casing 4, so that the second casing can be prevented from being cooled and formed. Later, due to the difference in shrinkage rate, burrs, shrinkage, and the like occur at the joint between the first casing and the second casing. The second inner casing 6 made of PE material is first to reduce the damage of the wire to the wire' and the second outer casing 7 is formed on the outer periphery of the second inner casing 6 to make the cable connector durable; In the preferred embodiment, 'because the connecting section 21 of the line 2 and the bent extension 22 are substantially vertically bent, the horizontal joints 61, 71 of the first shell side and the bent extensions 62, 72 also correspond. The ground is substantially vertical, and in other embodiments, when the connecting section 21 of the cable 2 intersects the bent extension 22 at an angle not equal to 90 degrees (eg, 70 degrees, 12 degrees), the second The horizontal joints 61, 71 and the bent extensions 62, 72 of the casing may also be obliquely bent and extended (not shown) correspondingly at an angle not equal to 90 degrees. The manufacturing process of the cable connector of the present invention generally comprises: first soldering each conductive line in the cable 2 to each solder joint 12 of the docking circuit board; and then on the upper and lower sides of the docking circuit board and the cable The first inner casing 3 is overmolded by the outer connecting portion 21 of the second inner casing 3; then the first outer casing 4 is overmolded again on the outer circumference of the first inner casing 3; and then the fastening elastic piece 5 is inserted from the back to the front. The second outer casing 4 is formed by bending the cable 2 to form the bent extension 22, and overmolding the second inner casing 6 at the rear of the first outer casing 4; Finally, the second outer casing 7 is overmolded on the outer periphery of the second inner casing 6. Compared with the prior art, the cable connector of the present invention has the beneficial effects of: firstly forming the first-shell 'assembly on the outer circumference of the cable 2 (4), and then bucking the elastic piece 5 The second housing of the rear end of the housing is L-shaped. The connector structure can solve the front surface 73 of the bending extension 72 of the second outer casing 7 and the rear end of the receiving groove 43 after miniaturization of the product. Insufficient front-to-back distance between them results in the difficulty of loading the latching elastic piece 5 after the first housing and the second housing are completely formed, and it is not necessary to provide an open-ended channel on the upper tongue plate as in the prior art. The structural strength is good and the manufacturing process is relatively simple. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention cannot be limited thereto, that is, the simple equivalent change and modification made by the novel patent application scope and the novel description content, All remain within the scope of this new patent. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of a preferred embodiment of the present invention; Fig. 2 is a plan view of the preferred embodiment; Fig. 3 is a cross-sectional view taken along line ZZ of Fig. 2; 5 is a three-dimensional exploded view of two different viewing angles of the preferred embodiment, and FIG. 6 is an exploded perspective view of the docking circuit board, the cable, the first housing, and the holding elastic piece in the preferred embodiment; and FIG. 8 is a further exploded perspective view of two different viewing angles of the preferred embodiment. 11 M443302 [Description of main component symbols] 1... •...Docking circuit board 45·...···Protruding part 11 ·_.····...Contact point 46···.•...Positioning hole 12·.· ·· •...welding point 47····· •...body 16 •... •...positioning hole 48....•...upper tongue 2......·cable 49··..·......lower tongue 21 ••... •...Connecting section 5... •...Bucking shrapnel 〇〇...........·ΖΖ. 乂 乂山 still C 1..... ____立LL..... ....Taste the tempering armor"f and J 1 丞〇卩3...-The first set 511... •...the shackle 31••... •...the body 52••... •...elastic buckle 32···.. •...Upper cover plate 53••... •...Pressing part 33••... •... Lower sealing plate 54····. •...Tail part 36·...· •...Positioning hole 541... • ...Limited position ____ potential C ...... ____ Chu - Λ milk 4... 弟 汰 0 spear " ri %x. 41 •... docking part 61•.... ···Horizontal Joints • · · · Fellows plus c ο..... ....J# 4ζ..... 0 ^ ^ ^ 1Τ 421 421... •...Bite structure 7... •... Two outer casing 43 ••... •... accommodating groove 71 ·····.... horizontal joint 431... •...first mating groove 72...··bending extension 432... •...second mating slot 73•• ... —刖 surface 44... •...Upper surface 12