•M297560 八、新型說明： 【新型所屬之技藝領域】 本創作係關於一種電連接器，尤其係關於一種具有接地 端子並可與一對應電連接器對接的電連接器。 【先前技藝】 如圖1所示，中國專利第02286721號揭示一習知電連接 器。該電連接器包含一絕緣本體7、一遮蔽殼體8及複數容 置於絕緣本體7的信號端子C。 該絕緣本體7包含一基部70及自基部70縱長方向一側豎 , 直延伸的配合部71，基部70延伸該配合部71的面即為一配 合面700。基部7〇與配合部71相對的另一側貫穿有複數收容 槽701 ’配合部71面向收容槽701的侧壁上設有複數容置槽 710’各容置槽710—體貫穿基部70。各信號端子C即插設于 相應容置槽710内。 遮蔽殼體8包覆於絕緣本體7的外表面，其具有相互平行 # 的第一擋壁80與第二擋壁81。第二擋壁81具有一可抵於絕 緣本體7的配合面700的抵接面8 10，抵接面8 10於絕緣本體7 的收谷槽701的相應位置向絕緣本體7反向延伸有插腳8 11 以插設於收容槽701内而將遮蔽殼體8組接於絕緣本體7。第 二擔壁8 1延其縱長方向對應絕緣本體7的收容槽7〇丨位置設 有複數方形窗口 812,各窗口 812靠近抵接面810的側壁向遠 離抵接面8 1 0的方向延伸有一懸臂狀接地端子〇。該接地端 子G整體向第一擋壁8〇傾斜一定角度延伸，其自由末端向第 一擋壁80方向凸設有導接部G〇以與另一對接電連接器的接 108097.doc M297560 地端子（未圖示）相配合。 该接地端子G自遮蔽殼體8—體傾斜延伸而成，雖加工方 便；然其是自窗口 8 12的側壁上延伸，因而懸臂過短。在與 配合電連接器的接地端子對接時彈性不足，對接狀態難易 保持穩定。因而該習知電連接器仍需進一步改進，以獲得 更好的接地效果。 【新型内容】 本創作提供一種電連接器，該電連接器的接地端子與配 合電連接器的接地端子對接時彈性足夠強，可保持對接的 穩定性。 本創作提供下述技術方案：一種電連接器可供一配合電 連接器由其插接口插入對接；包含一遮蔽殼體、一為該遮 蔽殼體包覆的絕緣本體，及複數收容於該絕緣本體内的信 號端子。該絕緣本體具有一面向插接口的配合面，該遮蔽 般體具有一第一壁。自該第一壁靠近配合面的配合側向遮 蔽殼體内彆折有複數延伸向插接口的接地端子，各接地端 子的自由端形成有一接觸部。 在一實施例中，自該第一壁的配合側的相對側向該配合 側方向彎折延伸有複數輔助接地端子，各接地端子具有一 接觸部。該接地端子與輔助接地端子的接觸部在一橫的方 向上交錯排列。該遮蔽殼體的第一壁對應各接地端子的接 觸部位置設有一窗口。該遮蔽殼體靠近插接口的一側向遮 蔽殼體内延伸有至少一固持片。自該遮蔽殼體的兩端分別 彎折延伸有可將遮蔽殼體固定於電路板上的固定部。在一 108097.doc M297560 實施例中，該遮蔽殼體的兩端分別一體彎折延伸有一接地 焊接腳。在另一實施例中，該遮蔽殼體設有分離的接地烊 接腳，各接地焊接腳具有一固持部，自該固持部一側延伸 的尾部，及自該側彎折向相對側方向延伸並與遮蔽殼體抵 罪接觸的接觸部。自該第一壁上設有延伸於各接地端子旁 側的保護體。各保護體的高度低於各接地端子的接觸部， 且各保護體面向插接口的一端較接地端子的自由端更靠近 I 插接口。 本創作的電連接器較習知技術，其接地端子自第一壁的 • 配合側延伸，彈性臂足夠長，可最大程度上提供了接地端 _ 子與配合的電連接器對接時的彈性，保證了電連接的穩 定。同時輔助接地端子進一步加強了穩定的狀態，從而獲 得更好的接地效果。 【實施方式】 為更好的理解本創作的精神，以下結合本創作的較佳實 _ 施例對其作進一步說明。 如圖2所示，一根據本創作一實施例的電連接器1包含一 絕緣本體2、一包覆該絕緣本體2的遮蔽殼體3及複數收容於 絕緣本體2内的信號端子4。進一步的，根據本創作的電連 接器1可設置於一電路板p上（可參照圖8)，供一配合的電連 接器（未圖示）由其插接口 1〇插入對接而實現相互間的信號 傳輸。 如圖3、4、5(a)、5(b)、5(c)所示，一根據本創作一實施 例的電連接器1的絕緣本體2具有一長方形的基部20及自該 108097.doc M297560 基部20的配合面200 —側垂直延伸的配合部21，該配合面 200是該電連接器1面向其插接口 1〇的面。自該配合面2〇〇 上相對於延伸配合部2 1的一側設有複數貫穿至其相對面的 第一固持槽201，相鄰的第一固持槽201之間自配合面200 上凹陷一凹槽202。自該配合部21靠近第一固持槽201的側 壁上設有複數端子收容槽210，該端子收容槽210是垂直於 配合面200延伸，並一體貫穿該基部20。此外，自該基部20 與配合部21的短邊兩側面分別凸伸有一梯形部22，各梯形 部22上與第一固持槽201同向延伸有一容置槽220與第二固 持槽221，其中該第二固持槽221位於外侧。 各信號端子4可收容於相應的端子收容槽210中，具有一 固持部40及自固持部40相對兩端延伸的對接部41與尾部 42。固持部40可與端子收容槽210的内壁干涉配合而將信號 端子4固持於端子收容槽210内。對接部41可與配合電連接 器對接實現電連接。而尾部42可焊接至電路板P，一方面 將電連接器1固定至電路板P，另一方面可實現與電路板p 間的電連接（請參考圖8)。 遮蔽殼體3具有一第一壁30及與該第一壁30相對的第二 壁31。該第一壁30與絕緣本體2的配合面200靠近的一側為 配合側300，自該配合側3〇〇對應絕緣本體2的凹槽202位置 延伸有複數接地端子32。該接地端子32自該配合側300向遮 蔽殼體3内彎折而向插接口 1〇方向延伸，具有一足夠長的彈 性’320及一在其自由端形成的凸向第二壁31的接觸部 321 ’該接觸部321可與配合的電連接器的接地端子接觸。 108097.doc •M297560 對應該接觸部321，該第一壁30上形成有複數窗口 3〇1，以 提供足夠的對接空間。各接地端子3 2旁側，自該第一壁3 〇 的配合側300大致水平凸伸有複數固持部33。各固持部33 可收容於絕緣本體2的相應第一固持槽2〇1内，而將該遮蔽 殼體3與絕緣本體2裝配在一起。 為加強與配合電連接器對接時的接地效果，對應該固持 部33 ’自第一壁30的配合側300的相對側向該配合側3〇〇方 向f折延伸有複數輔助接地端子34。該輔助接地端子34的 自由端形成有接觸部340，各接觸部340與接地端子32的接 觸部321在一橫列上交錯排列，除與配合電連接器的接地端 子對接外’其還可導引配合電連接器與該電連接器1的對 接。如圖4、5(c)所示，在本實施例中，各接地端子32與輔 助接地端子34旁側，自第一壁30上向遮蔽殼體3内凸伸有複 數保護體35。該保護體35自該第一壁30靠近插接口 1〇的一 側反折向該配合側300方向延伸。各保護體35具有一自該靠 近插接口 10的一側彎折的導引部35〇，及自該導引部35〇水 平向配合側300方向延伸的止擋部3 5 1。該位於保護體3 5前 端的導引部350較各接地端子32的接觸部321更靠近插接口 10’而止擋部351的高度低於各接地端子32、輔助接地端子 34的接觸部321、340。如此，當配合的電連接器由插接口 10插入時，其首先由保護體35的導引部35〇導引擡高，不至 於因位置過低而擠壓損壞接地端子32與輔助接地端子34 ; 當配合電連接器與本創作的電連接器1對接後，由於止擋部 3 5 1的南度限制’該電連接器1的各接地端子32與輔助接地 108097.doc M297560 端子34的接觸部32卜340至多被壓至與止擋部351同高，從 而避免被過壓而永久變形。 此外，結合圖3、4、6(a)、6(b)，為將遮蔽殼體3固定於 電路板P上，自該遮蔽殼體3的第二壁31(也可為第一壁3〇) 的兩端分別寶折延伸有一固定部3 6 ;自第一壁3 〇的配合侧 3 00兩端分別一體彎折延伸有一接地焊接腳3 7，其可收容於 絕緣本體2的容置槽220。該固定部36及接地焊接腳37的自 由端與信號端子4的尾部42在一水平面上，從而可一併焊接 於電路板？上結合圖3、4、6(a)、6(c)對應絕緣本體2的第 二固持槽221，自遮蔽殼體3靠近插接口 10的兩端分別向遮 蔽殼體3内延伸一固持片38,該固持片38藉由其兩側與第二 固持槽221的干涉配合，可進一步將遮蔽殼體3與絕緣本體2 固持在一起。 如圖7、8、9(a)、9(b)所示，根據本創作的另一實施例的 電連接器1’，其接地焊接腳37,可為分離獨立的端子而非自 遮蔽殼體3’上一體延伸。該接地焊接腳37，具有一固持部 370’，自該固持部370’一側延伸的尾部371，，及自該側彎折 向相對側延伸的接觸部372,。該尾部371，可焊接至電路板p 上’而該接觸部372’則可與遮蔽殼體3,的第一壁3〇，抵靠接 觸。相應的，絕緣本體2,上的容置槽22G，也需根據該接地焊 接腳37,的結構設計成一側開口的形式。 本創作還可根據配合電連接器的結構不同，産生各種相 應的實施例。如圖10所示，根據本創作的另一實施例的電 連接器m壁3G上不設置辅助接地端子。各保護體 108097.doc -10· M297560 35自第一壁30靠近插接口 10的一端分別反折至各接地端子 的旁側。如圖11所示，根據本創作的又一實施例，第一壁 3 0上同樣不設置輔助接地端子，而各保護體35自第—壁“ 上直接成型凸伸一類半圓柱狀塊延伸於各接地端子32 一 側。當然上述這些變化及其簡單替換並不影響本創作的實 質所在，均應在本創作的保護範圍之内。 本創作的電連接器的接地端子自第一壁的配合側向遮蔽 馨 殼體内彎折而向插接口方向延伸，彈性臂長度大致與電連 接器的寬度相當，較習知的自視窗上延伸的接地端子的彈 • 性大幅度增加。因而與配合的電連接器對接時，接觸穩定。 另外，輔助接地端子的設置也進一步加強了對接時的接地 效果。 本創作的技術内容及技術特點已揭示如上，然而熟悉本 領域的技術人員仍可能基於本創作的教示及揭示而作種種 不背離本創作精神的替換及修飾。因此，本創作的保護範 φ 圍應不限於實施例所揭示的内容，而應包括各種不背離本 創作的替換及修飾，並為本專利申請請求項所涵蓋。 【圖式簡單說明】 圖1係一習知電連接器的立體分解圖； 圖2係一根據本創作一實施例的電連接器的立體圖； 圖3係圖2中電連接器的分解圖； 圖4係圖2中電連接器的部分分解圖； 圖5(a)係圖2中電連接器的仰視圖； 圖5(b)係沿圖5(a)中ΑΑ截取的剖視圖； 108097.doc -11- M2^7560 圖5(c)係沿圖5(a)中bb截取的剖視圖； 圖6(a)係圖2中電連接器的俯視圖； 圖6(b)係沿圖6(a)中CC截取的剖視圖； 圖6(c)係沿圖6(a)中DD截取的剖視圖； 圖7係一根據本創作另一實施例的電連接器的立體分解 圖； 圖8係圖7中電連接器裝設於一電路板上的立體圖； _ 圖9(a)係圖7中電連接器的俯視圖； 圖9(b)係沿圖9(a)中EE截取的剖視圖； • 圖10係根據本創作另一實施例的電連接器的立體圖；以 及 圖11係根據本創作又一實施例的電連接器的立體圊。 【主要組件符號說明】 1 > 1 ’、1’，電連接器 2、 2’ 絕緣本體 3、 3’遮蔽殼體 4 信號端子 7 絕緣本體 8 遮蔽殼體 10 插接口 20 基部 21 配合部 22 梯形部 30 、30’ 第一壁 31 第二壁 32 接地端子 33 固持部 34 辅助接地端子 35 保護體 36 固定杳P 37 、3 7’ 接地焊接腳 38 固持片 40 固持部 41 對接部 42 尾部 108097.doc -12- M297560 70 基部 71 配合部 80 第一擋壁 81 第二擋壁 200 配合面 201 第一固持槽 202 凹槽 210 端子收容槽 220 、2201 容置槽 221 第二固持槽 300 配合側 301 窗口 320 彈性臂 321 接觸部 340 接觸部 350 導引部 351 止擋部 3701 1固持部 3711 1尾部 372' '接觸部 700 配合面 701 收容槽 710 容置槽 810 抵接面 811 插腳 812 窗口 C 信號端子 G 接地端子 P 電路板 G0 導接部 108097.doc . π -• M297560 VIII. New Description: [New Technology Field] This paper is about an electrical connector, especially an electrical connector that has a grounding terminal and can be interfaced with a corresponding electrical connector. [Prior Art] As shown in Fig. 1, a conventional electrical connector is disclosed in Chinese Patent No. 02286721. The electrical connector includes an insulative housing 7, a shielding housing 8, and a plurality of signal terminals C housed in the insulative housing 7. The insulative housing 7 includes a base portion 70 and a mating portion 71 extending vertically from a longitudinal direction of the base portion 70. The surface of the base portion 70 extending the mating portion 71 is a mating surface 700. The other side of the base portion 7's opposite to the engaging portion 71 is inserted through the plurality of receiving grooves 701'. The fitting portion 71 is provided with a plurality of receiving grooves 710'. Each signal terminal C is inserted into the corresponding receiving slot 710. The shielding case 8 covers the outer surface of the insulative housing 7 and has a first blocking wall 80 and a second blocking wall 81 which are parallel to each other. The second retaining wall 81 has an abutting surface 8 10 that can abut against the mating surface 700 of the insulative housing 7 . The abutting surface 8 10 extends in opposite directions of the trough slot 701 of the insulative housing 7 to the insulative housing 7 . 8 11 is inserted into the receiving groove 701 to assemble the shielding case 8 to the insulative housing 7 . The second support wall 8 1 has a plurality of square windows 812 at positions corresponding to the receiving slots 7 of the insulative housing 7 in the longitudinal direction. The side walls of the windows 812 adjacent to the abutting surface 810 extend away from the abutting surface 8 1 0 . There is a cantilevered ground terminal 〇. The grounding terminal G extends obliquely at an angle to the first barrier wall 8 , and the free end of the grounding terminal G protrudes from the first barrier wall 80 to the first barrier wall 80 to be connected to the other butt electrical connector 108097.doc M297560 The terminals (not shown) match. The grounding terminal G is formed by obliquely extending from the shielding housing 8 and is easy to process. However, it extends from the side wall of the window 820 and the cantilever is too short. When the docking is made with the grounding terminal of the electrical connector, the elasticity is insufficient, and the docking state is difficult to maintain. Therefore, the conventional electrical connector still needs further improvement to obtain a better grounding effect. [New content] The present invention provides an electrical connector in which the grounding terminal of the electrical connector is sufficiently flexible to be mated with the grounding terminal of the electrical connector to maintain the stability of the docking. The present invention provides the following technical solution: an electrical connector can be inserted into and docked by a mating electrical connector; and includes a shielding shell, an insulating body covered by the shielding shell, and a plurality of insulating housings Signal terminals in the body. The insulative housing has a mating face facing the plug connector, the shield body having a first wall. The grounding terminal extending from the mating side shielding housing of the first wall close to the mating surface is folded into a plurality of grounding terminals, and the free ends of the grounding terminals are formed with a contact portion. In one embodiment, a plurality of auxiliary ground terminals are bent and extended from the opposite sides of the mating side of the first wall toward the mating side, and each of the ground terminals has a contact portion. The contact portions of the ground terminal and the auxiliary ground terminal are staggered in the lateral direction. The first wall of the shielding case is provided with a window corresponding to the contact portion of each of the ground terminals. The shielding housing has at least one holding piece extending from a side of the insertion interface toward the shielding housing. A fixing portion for fixing the shielding case to the circuit board is bent and extended from both ends of the shielding case. In a 108097.doc M297560 embodiment, the two ends of the shield housing are integrally bent and extended with a grounded solder joint. In another embodiment, the shielding housing is provided with separate grounding straps, each grounding soldering leg has a retaining portion, a tail portion extending from the side of the retaining portion, and extending from the side to the opposite side And a contact portion that is in contact with the shielding shell. A protective body extending from the side of each of the grounding terminals is provided on the first wall. The height of each protection body is lower than the contact portion of each ground terminal, and one end of each protection body facing the insertion interface is closer to the I insertion interface than the free end of the ground terminal. The electrical connector of the present invention is more conventionally known, and the grounding terminal extends from the mating side of the first wall, and the elastic arm is long enough to provide the maximum flexibility of the grounding terminal _ sub-connecting with the mating electrical connector. The stability of the electrical connection is guaranteed. At the same time, the auxiliary grounding terminal further strengthens the stable state, thereby achieving better grounding effect. [Embodiment] In order to better understand the spirit of the present creation, the following will be further described in conjunction with the preferred embodiment of the present invention. As shown in FIG. 2, an electrical connector 1 according to an embodiment of the present invention includes an insulative housing 2, a shielding housing 3 covering the insulative housing 2, and a plurality of signal terminals 4 housed in the insulative housing 2. Further, the electrical connector 1 according to the present invention can be disposed on a circuit board p (refer to FIG. 8), and a mating electrical connector (not shown) is inserted and docked by the plug connector 1 to realize mutual interaction. Signal transmission. As shown in Figures 3, 4, 5(a), 5(b), and 5(c), an insulative housing 2 of an electrical connector 1 according to an embodiment of the present invention has a rectangular base 20 and from 108097. Doc M297560 The mating face 200 of the base 20 is a laterally extending mating portion 21 which is the face of the electrical connector 1 facing the plug 1 . A first holding groove 201 penetrating from the mating surface 2 to the opposite side of the mating surface 2 1 is provided, and the first holding groove 201 is recessed from the mating surface 200. Groove 202. A plurality of terminal receiving grooves 210 are formed on the side wall of the engaging portion 21 adjacent to the first holding groove 201. The terminal receiving groove 210 extends perpendicularly to the mating surface 200 and integrally penetrates the base portion 20. In addition, a trapezoidal portion 22 is protruded from the two sides of the short side of the base portion 20 and the mating portion 21, and each of the trapezoidal portions 22 has a receiving groove 220 and a second retaining groove 221 extending in the same direction as the first retaining groove 201. The second holding groove 221 is located on the outer side. Each of the signal terminals 4 can be received in the corresponding terminal receiving groove 210, and has a holding portion 40 and an abutting portion 41 and a tail portion 42 extending from opposite ends of the holding portion 40. The holding portion 40 can interfere with the inner wall of the terminal receiving groove 210 to hold the signal terminal 4 in the terminal receiving groove 210. The docking portion 41 can be electrically connected to the mating electrical connector. The tail portion 42 can be soldered to the circuit board P to fix the electrical connector 1 to the circuit board P on the one hand and to electrically connect to the circuit board p on the other hand (refer to Fig. 8). The shield housing 3 has a first wall 30 and a second wall 31 opposite the first wall 30. The side of the first wall 30 adjacent to the mating surface 200 of the insulative housing 2 is a mating side 300 from which a plurality of grounding terminals 32 extend corresponding to the recess 202 of the insulative housing 2. The grounding terminal 32 is bent from the mating side 300 into the shielding case 3 and extends in the direction of the plug connector 1 , and has a sufficiently long elastic '320 and a contact formed at the free end thereof toward the second wall 31. The portion 321 'the contact portion 321 can be in contact with the ground terminal of the mating electrical connector. 108097.doc • M297560 corresponds to the contact portion 321 on which the plurality of windows 3〇1 are formed to provide sufficient docking space. A plurality of holding portions 33 are substantially horizontally protruded from the mating side 300 of the first wall 3 。 on the side of each of the grounding terminals 3 2 . Each of the holding portions 33 can be received in the corresponding first holding groove 2〇1 of the insulative housing 2, and the shielding case 3 and the insulative housing 2 are assembled together. In order to enhance the grounding effect when mating with the electrical connector, a plurality of auxiliary ground terminals 34 are extended from the opposite sides of the mating side 300 of the first wall 30 to the mating side 3''. The free end of the auxiliary ground terminal 34 is formed with a contact portion 340, and the contact portions 321 of the contact portions 340 and the ground terminal 32 are staggered in a row, except for mating with the ground terminal of the mating electrical connector. The mating electrical connector is mated with the electrical connector 1. As shown in Figs. 4 and 5(c), in the present embodiment, a plurality of protective bodies 35 are projected from the first wall 30 toward the shielding case 3 on the side of each of the grounding terminals 32 and the auxiliary grounding terminals 34. The protective body 35 extends from the side of the first wall 30 adjacent to the insertion port 1 反 to the mating side 300. Each of the protection bodies 35 has a guide portion 35b bent from the side closer to the insertion port 10, and a stopper portion 351 extending from the guide portion 35 in the direction of the horizontal engagement side 300. The guiding portion 350 at the front end of the protecting body 35 is closer to the plug connector 10' than the contact portion 321 of each grounding terminal 32, and the height of the stopping portion 351 is lower than the contact portion 321 of each of the grounding terminal 32 and the auxiliary grounding terminal 34, 340. Thus, when the mating electrical connector is inserted by the plug connector 10, it is first guided and raised by the guiding portion 35 of the protecting body 35, so as not to crush and damage the grounding terminal 32 and the auxiliary grounding terminal 34 due to the position being too low. When the electrical connector is mated with the electronic connector 1 of the present invention, the contact between the ground terminals 32 of the electrical connector 1 and the auxiliary ground 108097.doc M297560 terminal 34 is limited due to the south limit of the stopper portion 351. The portion 32 340 is at most pressed to the same height as the stopper portion 351 to avoid permanent deformation by overpressure. In addition, in conjunction with FIGS. 3, 4, 6 (a), 6 (b), in order to fix the shield case 3 to the circuit board P, the second wall 31 (which may also be the first wall 3) of the shield case 3 The two ends of the first side wall 3 〇 are integrally bent and extended with a grounding soldering leg 3 7 , which can be received in the insulating body 2 . Slot 220. The fixing portion 36 and the free end of the grounding soldering leg 37 and the tail portion 42 of the signal terminal 4 are on a horizontal surface so as to be soldered to the circuit board together. 3, 4, 6 (a), 6 (c) corresponding to the second holding slot 221 of the insulative housing 2, a retaining piece extends from the shielding housing 3 to the shielding housing 3 near the two ends of the insertion interface 10 38. The holding piece 38 can further hold the shielding shell 3 and the insulating body 2 together by the interference fit between the two sides thereof and the second holding groove 221 . As shown in FIGS. 7, 8, 9(a), 9(b), the electrical connector 1' according to another embodiment of the present invention, the grounding soldering leg 37, may be a separate independent terminal instead of a self-shielding shell The body 3' extends integrally. The grounding soldering leg 37 has a holding portion 370', a tail portion 371 extending from the side of the holding portion 370', and a contact portion 372 extending from the side to the opposite side. The tail portion 371 can be soldered to the circuit board p and the contact portion 372' can be in contact with the first wall 3 of the shielding case 3. Correspondingly, the accommodating groove 22G on the insulative housing 2 is also designed to be open on one side according to the structure of the grounding soldering leg 37. The present invention can also produce various corresponding embodiments depending on the structure of the mating electrical connector. As shown in Fig. 10, an auxiliary ground terminal is not provided on the wall 3G of the electrical connector m according to another embodiment of the present creation. Each protective body 108097.doc -10· M297560 35 is folded back from the first wall 30 to the side of the grounding terminal 10 to the side of each grounding terminal. As shown in FIG. 11, according to still another embodiment of the present invention, the auxiliary grounding terminal is also not disposed on the first wall 30, and each of the protective bodies 35 extends from the first wall to the semi-cylindrical block. Each of the grounding terminals 32. Of course, these changes and their simple replacement do not affect the essence of the creation, and should be within the scope of this creation. The grounding terminal of the electrical connector of the present invention is fitted from the first wall. The lateral shielding shell is bent and extends in the direction of the plug connector, and the length of the elastic arm is substantially equal to the width of the electrical connector, and the elasticity of the grounding terminal extending from the window is greatly increased. When the electrical connector is docked, the contact is stable. In addition, the setting of the auxiliary ground terminal further enhances the grounding effect at the time of docking. The technical content and technical features of the present disclosure have been disclosed above, but those skilled in the art may still The teachings and revelations of creation do not deviate from the substitution and modification of the spirit of this creation. Therefore, the protection of this creation should not be limited to the examples. The content of the present invention should include various alternatives and modifications that do not depart from the present invention and are covered by the present patent application. [Simplified Schematic Description] Fig. 1 is an exploded perspective view of a conventional electrical connector; FIG. 3 is an exploded view of the electrical connector of FIG. 2; FIG. 4 is a partially exploded view of the electrical connector of FIG. 2; FIG. 5(a) is a diagram of FIG. Figure 5(b) is a cross-sectional view taken along line 图 in Figure 5(a); 108097.doc -11- M2^7560 Figure 5(c) is a cross-sectional view taken along bb in Figure 5(a) Figure 6 (a) is a plan view of the electrical connector of Figure 2; Figure 6 (b) is a cross-sectional view taken along line CC of Figure 6 (a); Figure 6 (c) is taken along DD of Figure 6 (a) Figure 7 is an exploded perspective view of an electrical connector according to another embodiment of the present invention; Figure 8 is a perspective view of the electrical connector of Figure 7 mounted on a circuit board; _ Figure 9 (a) is Figure 7 FIG. 9(b) is a cross-sectional view taken along line EE of FIG. 9(a); FIG. 10 is a perspective view of an electrical connector according to another embodiment of the present creation; and FIG. 11 is based on the present creation Another Stereo 圊 of the electrical connector of the embodiment. [Main component symbol description] 1 > 1 ', 1', electrical connector 2, 2' Insulating body 3, 3' shielding housing 4 Signal terminal 7 Insulating body 8 Shielding shell Body 10 plug connector 20 base 21 mating portion 22 trapezoidal portion 30, 30' first wall 31 second wall 32 ground terminal 33 retaining portion 34 auxiliary ground terminal 35 protection body 36 fixed 杳 P 37 , 3 7 ' grounding soldering foot 38 holding Sheet 40 Holding portion 41 Butting portion 42 Tail portion 108097.doc -12- M297560 70 Base portion 71 Mating portion 80 First retaining wall 81 Second retaining wall 200 Mating surface 201 First retaining groove 202 Groove 210 Terminal receiving groove 220, 2201 Slot 221 second holding groove 300 mating side 301 window 320 elastic arm 321 contact portion 340 contact portion 350 guiding portion 351 stopper portion 3701 1 holding portion 3711 1 tail portion 372 ' 'contact portion 700 mating surface 701 receiving groove 710 accommodating Slot 810 Abutment surface 811 Pin 812 Window C Signal terminal G Ground terminal P Circuit board G0 Guide 108097.doc . π -