M384424 五、新型說明： 【新型所屬之技術領域】 本創作涉及一種連接器，尤其涉及一種卡連接器。 【先前技術】 按，SIM卡或者SD卡等電子卡需要卡連接器與電子產品 的其它部件電性連接，當前之卡連接器常設置偵測電子卡是否 完全插入的功能。 習知技術中已有可提供電子卡插入偵測功能之卡連接 器，如第三圖所示。該卡連接器包括一絕緣本體10’、複數訊 號端子20’及一偵測機構。該偵測機構包括並排的一可動端子 30’及一固定端子40’，藉由可動端子30’與固定端子40’的分離 或接觸來實現偵測電子卡是否插入之目的。 惟，習知之電子卡連接器在其侧面增加兩並排的可動端子 30’及一固定端子40’，雖然可以實現檢測功能，但卻也加大了 卡連接器的寬度，且習知之卡連接器需要用不相同的可動端子 30’、固定端子40’組成偵測機構，在產品生產時需要開發出兩 種模具，因而其產品的製造成本較高。 【新型内容】 本創作的主要目的係針對上述習知技術存在之缺陷提供 一種寬度小、可降低製造成本且具有電子卡檢測功能的卡連接 器。 為實現上述目的，本創作卡連接器包括一絕緣本體、複數 訊號端子、一開關端子及一殼體。絕緣本體設有一插卡空間， 絕緣本體於插卡空間之一側上設有一收容槽；複數訊號端子固 持於絕緣本體上；開關端子具有一固持部，固持部一邊緣向一 側延伸形成一焊接部，另一邊緣向另一側延伸形成一彈性部， 3 M384424 彈性部末端延伸形成一第一接觸部，固持部固持於絕緣本體 上，彈性部收容於收容槽内，第一接觸部彈性地伸入到插卡空 間内；殼體覆蓋於該絕緣本體上，殼體上於開關端子位置處設 有一接觸彈片，該接觸彈片可與開關端子活動接觸，殼體上並 設有複數焊接腳。 由上所述，本創作卡連接器在插卡前接觸彈片與開關端子 相接觸，從而構成一導電回路，插入電子卡後，電子卡下壓開 關端子，使得接觸彈片與開關端子相分開，此時回路斷開，從 而可實現對電子卡是否正確插入的檢測功能；開關端子與接觸 彈片為上下接觸式，可減小卡連接器的寬度，且藉由殼體上接 觸彈片之設計，可減少一套模具，從而降低製造成本。 【實施方式】 為詳細說明本創作之技術内容、構造特徵及其所達成之目 的與功效，下面將結合實施例並配合圖式詳予說明。 請參閱第一圖及第二圖，本創作卡連接器100包括一絕緣 本體1、複數訊號端子2、一殼體3、一退卡機構4及一開關 端子5。 請參閱第二圖，絕緣本體1大致呈矩形塊狀，其上開設有 一可用於容置電子卡（圖未示）的插卡空間11，絕緣本體1 上設有複數端子收容槽13，絕緣本體1上設有一位於插卡空 間11左側的滑動空間14及一軌跡曲線槽12，滑動空間14後 側壁上凸設有一限位柱15，絕緣本體1上於滑動空間14右側 設有一滑動槽16 ;絕緣本體1於插卡空間11右側設有一收容 槽17及一缺槽18 ;絕緣本體1兩側外壁突設有複數個卡塊 19，底部凹設有複數凹槽111。 訊號端子2係以具有導電性及彈性的金屬材料製成，每一 4 M384424 端子2各具有一固定部21、一由固定部21之一邊緣端向一側 延伸形成之連接部22、一從連接部22末端處延伸形成之第三 接觸部23及一從固定部21另一側邊緣處延伸形成之焊腳24。 固定部21固持於絕緣本體1上，連接部22收容於端子收容槽 13内，第三接觸部23伸入到插卡空間内，焊腳24伸出到絕 緣外，以焊接於電路板（圖未示）上相對應的電性接點。 退卡機構4包括一滑動塊41、一導引桿42及一彈性元件 43。滑動塊41具有一基部411，基部411前後兩端分別向左 右兩侧延伸形成一凸塊412，前端之凸塊412上設有一定位柱 413及一固定孔414，後端之凸塊412上延伸形成一勾持部 415，勾持部415伸入到滑動槽16内並鉤持於滑動槽16底壁 上，勾持部415可沿著滑動槽16兩側壁自由滑動。該滑動塊 41係可滑動地裝置於該滑動空間14中，彈性元件43 —端套 設於限位柱15上，另一端套設於定位柱413上，限位柱15及 定位柱413用以限制彈性元件43之活動範圍，彈性元件43可 施予該滑動塊41向前移動的復位力量。導引桿42後端固定於 固定孔41中，前端活動配合於軌跡曲線槽12中，該導引桿 42可在該軌跡曲線槽12中分兩段運動以分別達成插卡、退卡 的功效。 開關端子5具有一片狀之固持部51，固持部51右側邊緣 向右彎折延伸形成一焊接部54，後側邊緣向後並向上傾斜延 伸形成一彈性部52，彈性部52末端彎折延伸形成一第一接觸 部53，固持部51固持於絕緣本體1上，彈性部52收容於收 容槽17内，第一接觸部53彈性地伸入到插卡空間11内，焊 接部54收容於缺槽18内，用以焊接到電路板（圖未示）上。 殼體3具有一上板31及兩分別從上板31 —側向下延伸形 成之側板32,兩侧板32上各設有複數卡接口 36及焊接腳37, 5 M384424 焊接腳37收容於凹槽111内，用以焊接到電路板（圖未示） 上。複數卡接口 36分別與絕緣本體1上之一卡塊19配合以使 殼體3與絕緣本體1接合為一體。上板31於開關端子5處設 有一第一開槽33，上板左侧設有一第二開槽35，第一開槽33 前側邊緣處向後並向下傾斜延伸形成一接觸彈片34,接觸彈 片34具有一彈臂部341及一由彈臂部341末端延伸形成之第 二接觸部342，第二接觸部342可與開關端子5呈上下活動地 相接觸，第二開槽35前側邊緣處向後並向下傾斜延伸形成一 彈性壓制片35，該彈性壓制片35抵壓於導引桿42上，使導 引桿42可穩定的配合於該軌跡曲線槽12中。 本創作卡連接器1〇〇尚未插入電子卡（圖未示）前，接觸 彈片34之第二接觸部342與開關端子5之第一接觸部53相接 觸，從而構成一導電回路，插入電子卡（圖未示）後，電子卡 下壓開關端子5之第一接觸部53，接觸彈片34與開關端子5 相分開，此時回路斷開，從而使導電回路斷開，實現檢測功能。 由上所述，本創作卡連接器100在插卡前接觸彈片34與 開關端子5相接觸，從而構成一導電回路，插入電子卡（圖未 示）後，電子卡（圖未示）下壓開關端子5，接觸彈片34與 開關端子5相分開，此時回路斷開，從而可實現對電子卡（圖 未示）是否正確插入的檢測功能；開關端子5與接觸彈片34 為上下接觸式，可減小卡連接器100的寬度，且藉由殼體3上 接觸彈片34之設計，可減少一套模具，從而降低製造成本。 【圖式簡單說明】 第一圖係本創作卡連接器一種實施例的立體圖。 第二圖係第一圖所示卡連接器的立體分解圖。 第三圖係習知卡連接器的立體圖。 6M384424 V. New description: [New technical field] The present invention relates to a connector, and more particularly to a card connector. [Prior Art] Pressing, an electronic card such as a SIM card or an SD card requires the card connector to be electrically connected to other components of the electronic product. The current card connector is often provided with a function of detecting whether the electronic card is fully inserted. A card connector that provides an electronic card insertion detection function is known in the prior art, as shown in the third figure. The card connector includes an insulative housing 10', a plurality of signal terminals 20', and a detecting mechanism. The detecting mechanism includes a movable terminal 30' and a fixed terminal 40' arranged side by side, and the purpose of detecting whether the electronic card is inserted or not is achieved by separating or contacting the movable terminal 30' and the fixed terminal 40'. However, the conventional electronic card connector has two side-by-side movable terminals 30' and a fixed terminal 40' on its side. Although the detection function can be realized, the width of the card connector is also increased, and the conventional card connector is known. It is necessary to form a detecting mechanism by using different movable terminals 30' and fixed terminals 40', and two kinds of molds need to be developed in the production of the products, so that the manufacturing cost of the products is high. [New Content] The main purpose of this creation is to provide a card connector having a small width, a low manufacturing cost, and an electronic card detection function in view of the defects of the above-mentioned prior art. To achieve the above object, the present invention card connector includes an insulative housing, a plurality of signal terminals, a switch terminal, and a housing. The insulative housing is provided with a card slot, and the insulative housing is provided with a receiving slot on one side of the card slot; the plurality of signal terminals are fixed on the insulative housing; the switch terminal has a retaining portion, and an edge of the retaining portion extends to one side to form a soldering The other end extends to the other side to form an elastic portion, and the end of the elastic portion extends to form a first contact portion. The retaining portion is retained on the insulative housing, and the elastic portion is received in the receiving slot. The first contact portion is elastically The housing is placed on the insulative housing. The housing is disposed on the insulative housing. The housing is provided with a contact elastic piece at a position of the switch terminal. The contact elastic piece can be in operative contact with the switch terminal, and a plurality of soldering legs are disposed on the housing. As described above, the creative card connector contacts the spring and the switch terminal before the card is inserted, thereby forming a conductive loop. After the electronic card is inserted, the electronic card presses the switch terminal, so that the contact spring is separated from the switch terminal. When the circuit is disconnected, the detection function of whether the electronic card is correctly inserted can be realized; the switch terminal and the contact elastic piece are up-and-down contact type, which can reduce the width of the card connector, and can be reduced by the design of the contact elastic piece on the casing. A set of molds to reduce manufacturing costs. [Embodiment] In order to explain the technical contents, structural features, and the objects and effects of the present invention in detail, the embodiments will be described in detail below with reference to the drawings. Referring to the first and second figures, the present invention card connector 100 includes an insulative housing 1, a plurality of signal terminals 2, a housing 3, a card ejecting mechanism 4, and a switch terminal 5. Referring to the second figure, the insulative housing 1 has a substantially rectangular block shape, and has a card space 11 for receiving an electronic card (not shown). The insulative housing 1 is provided with a plurality of terminal receiving slots 13 and an insulating body. The sliding space 14 and the trajectory curve groove 12 are disposed on the left side of the sliding space 14. The sliding body 14 is provided with a sliding column 16 on the rear side of the sliding space 14. The insulative housing 1 is provided with a receiving slot 17 and a slot 18 on the right side of the card slot 11; a plurality of latching blocks 19 are protruded from the outer wall of the insulative housing 1 , and a plurality of recesses 111 are defined in the bottom recess. The signal terminal 2 is made of a metal material having electrical conductivity and elasticity. Each of the 4 M384424 terminals 2 has a fixing portion 21, a connecting portion 22 extending from one edge end of the fixing portion 21 to one side, and a connecting portion. A third contact portion 23 extending at the end of the connecting portion 22 and a solder fillet 24 extending from the other side edge of the fixing portion 21 are formed. The fixing portion 21 is fixed on the insulative housing 1 , the connecting portion 22 is received in the terminal receiving slot 13 , the third contact portion 23 extends into the card insertion space, and the solder tail 24 protrudes out of the insulation to be soldered to the circuit board (Fig. Corresponding electrical contacts are not shown. The card ejecting mechanism 4 includes a slider 41, a guiding rod 42 and an elastic member 43. The sliding block 41 has a base portion 411. The front and rear ends of the base portion 411 extend to the left and right sides to form a protrusion 412. The front end of the protrusion 412 is provided with a positioning post 413 and a fixing hole 414. The rear end of the protrusion 412 extends. A hooking portion 415 is formed. The hooking portion 415 extends into the sliding slot 16 and is hooked on the bottom wall of the sliding slot 16. The hooking portion 415 can slide freely along both sidewalls of the sliding slot 16. The sliding block 41 is slidably disposed in the sliding space 14. The elastic member 43 is sleeved on the limiting post 15 and the other end is sleeved on the positioning post 413. The limiting post 15 and the positioning post 413 are used. The range of motion of the elastic member 43 is restricted, and the elastic member 43 can impart a restoring force to the forward movement of the slider 41. The rear end of the guiding rod 42 is fixed in the fixing hole 41, and the front end is movably fitted in the trajectory curved groove 12. The guiding rod 42 can be moved in two stages in the trajectory curved groove 12 to achieve the functions of card insertion and card withdrawal respectively. . The switch terminal 5 has a one-piece retaining portion 51. The right edge of the retaining portion 51 is bent to the right to form a welded portion 54. The rear side edge extends rearward and upwardly to form an elastic portion 52. The elastic portion 52 is bent and extended at the end. The first contact portion 53 is fixed to the insulative housing 1 , and the elastic portion 52 is received in the receiving slot 17 . The first contact portion 53 elastically extends into the card insertion space 11 , and the soldering portion 54 is received in the slot portion 18, used to solder to the circuit board (not shown). The housing 3 has an upper plate 31 and two side plates 32 extending downward from the side of the upper plate 31. The two side plates 32 are respectively provided with a plurality of card interfaces 36 and soldering legs 37. The 5 M384424 soldering legs 37 are received in the concave portion. The slot 111 is for soldering to a circuit board (not shown). The plurality of card interfaces 36 cooperate with one of the blocks 19 on the insulative housing 1 to integrally engage the housing 3 with the insulative housing 1. The upper plate 31 is provided with a first slot 33 at the switch terminal 5, and a second slot 35 is formed on the left side of the upper plate. The front edge of the first slot 33 is inclined rearwardly and downwardly to form a contact elastic piece 34, and the contact spring piece is contacted. 34 has a spring arm portion 341 and a second contact portion 342 extending from the end of the elastic arm portion 341. The second contact portion 342 can be in active contact with the switch terminal 5, and the front side edge of the second slot 35 is rearward. And extending downwardly to form an elastic pressing piece 35, the elastic pressing piece 35 is pressed against the guiding rod 42, so that the guiding rod 42 can be stably fitted in the trajectory curve groove 12. Before the electronic card connector 1 is not inserted into the electronic card (not shown), the second contact portion 342 of the contact spring 34 contacts the first contact portion 53 of the switch terminal 5, thereby forming a conductive loop and inserting the electronic card. (not shown), the first contact portion 53 of the electronic card pressing switch terminal 5, the contact elastic piece 34 is separated from the switch terminal 5, and the circuit is disconnected at this time, thereby disconnecting the conductive loop and realizing the detecting function. As described above, the present card connector 100 contacts the switch terminal 5 in front of the card to form a conductive loop. After the electronic card (not shown) is inserted, the electronic card (not shown) is pressed. The switch terminal 5, the contact elastic piece 34 is separated from the switch terminal 5, and the circuit is disconnected at this time, so that the detection function of whether the electronic card (not shown) is correctly inserted can be realized; the switch terminal 5 and the contact elastic piece 34 are in up-and-down contact type. The width of the card connector 100 can be reduced, and by designing the cover 3 on the housing 3, a set of molds can be reduced, thereby reducing manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS The first figure is a perspective view of an embodiment of the present invention card connector. The second figure is an exploded perspective view of the card connector shown in the first figure. The third figure is a perspective view of a conventional card connector. 6