201023454 九、發明說明： 【發明所屬之技術領域】 本發明涉及一種電連接器’尤其涉及一種與相匹配的對接連接器對接的 電連接器。 【先前技術】 中國大陸實用新型專利第200520074311.9號揭示了一種電連接器，該電 連接器包括絕緣本體、固持於絕緣本體的端子、遮覆於絕緣本體的遮蔽殼體 及固持件i緣本體自前端面向後凹設有對接腔，該固持件包括矩形的基 部、自基部上下兩側向前相對突伸的—對彈性f及自基部向前垂直延伸的插 入.該固持件自絕緣本體的後端面組裝入對應的收容槽並藉插入部與對 Ό f的插入槽干涉而固定於絕緣本體，彈性臂則凸伸入對接腔。當對接連接器 儿全插入對接腔後，固持件的兩彈性臂末端相對設置的夾持部會夾持對接連 接器，從而可增加對接連接器的插入及拔出力❶ 惟，此電連接器需單獨言it置固持件來增加對接連接器的插入及拔出力， 絕緣本體雜㈣當的m⑽容制料，㈣會導致t連接辦體積增 加’不符合小型化的發展要求；同時，單獨增設固持件會導致電連接器的成 本增加’不利於企業的長期性發展。 故’希望設計出一種新型的電連接器。 【發明内容】 Ο 本發贿要解決之技朗題n種可增加對接連接@的插入及 拔出力的電連接器β 本發明所要解決之技術問題係通過以下技術方案。 相較於習知技術，本發明之第-端子的主體部上設置之突伸入對接腔的 =性部’可增加對接連接器的插入及拔出力，同時可防止對接連接器插入對 接腔後向一側發生傾斜。 以下結α圖式及實施方式對本發明進一步說明。 【實施方式】 明參閱第-圖及第二圖所示，本發明的電連接器1〇〇主要包括絕緣本體 1及固持於絕緣本體1的複數端子。 201023454 - 請參閱第三圖、第四圖所示，絕緣本體i包括—矩形的基部u及自基 部η向前延伸的圓筒狀對接部12。基部n包括前端面⑴、與前端面iu 相對設置的後端面、頂壁m、與頂壁113相對設置的底壁114及連接頂壁 113與底壁1H的兩相對側壁115，其中底壁114的底面形成一安裝面，對 接部12係自前端® m向前延伸形成。對接部12内凹設有圓柱狀對接腔 m ’該對接腔12ι自前向後貫通基部„，對接連接器(未圖示)係自前向後 插入對接腔121 » 基部Π自兩側壁ns的底面分別向上凹設有貫穿頂壁m力第一收容 槽及第二收容槽14 ’該第一、第二收容槽13、14分別位於對接腔ΐ2ΐ 的兩側，且與對接腔121連通。第一收容槽13包括固定槽13卜自固定槽 © 131呈擴大狀向前延伸的容置槽132及自固定槽131躺對接腔ΐ2ΐ延伸形 成的收容部133，該容置槽132及收容部133均與對接腔121連通收容部 的-內壁向前突設有支_丨…絕緣本體〗自後端面向前凹設有第三 收容槽15 ’該第三收容槽15與第二收容槽14位於對接腔ΐ2ΐ的同一側， j對接腔m連通。絕緣本體！奴有細餘槽16，該帛时容槽16 ”第-收容槽13位於對接腔⑵的同—側，第四收容槽16自上向下貫穿絕 $本體1的頂壁⑴及侧壁115，並於縫113上形成與對接腔i2i連通的 開口 161 〇 請繼續參閱第三@、第四圖所示，所述端子包括第—端子2、第n ® 接地端子5。其中，第—端子2為片狀金屬衝壓形成，自 第-端子2包括片狀的主體部21、自主體部21向前延伸的第一彈性臂2: =自主體部21後端緣下部彎折延伸的焊接部，該主體部2〗包括适 m及連接第一固持部2u與第一彈性臂22的連接部212，該連納 、第©持部211位於同一平面，但與第一彈性臂η不位於同一平面 固持部211的中間位置向前延伸形成的，且連接部21: :°寬又較第—固持部211的小。主趙部21上還設有彈性新 對接ί體部21前端的中間位置衝壓出的彈片向後並朝向 的ί= :;= 一固持部2U及連接部212上形成與彈片對應 第沾彈 與第一彈性臂22前端形成的第一接觸部221位於 第一h子2的同-側，第—接觸部221位於第一端子2的前端。彈性部犯 201023454 =呈Γ形且具有突伸入對接腔的弧形接觸面214，接觸面214上-有絕 緣層’如絕緣漆等以使彈性· 213絕緣 ，上叹有絕 扣連接，彈性部213遠離連接於第 的一端與第-固持部 置而可適當發生移動。彈性部213位於第二二11,的了端之自由端則懸空設 中，彈性部213亦可與第二端子2分離 部。在其他實施方式 固定於第-端子2的對應位置即可。置將該彎折呈孤形的彈性部213 第二端子3包括片狀的第二固持部31、 下延伸的第二彈性臂32及自第二固 31上側緣彎折向 第二彈性臂32的末端形成第：接_ 3^，^^^_接部33 ’ 前端面⑴及後端面的側緣延伸細部 槽14所在的側壁n5延伸。第三端子4呈框狀其包括由兩相^設置的^ f邊及兩相對設置的短框邊首尾相接形成的第三@持部4卜該^ 41於-短框邊的内側緣延伸形成第三彈性臂42 ^弯折 形成的焊接部43。第三彈性臂42上設右八杨入仙長汇遺外側緣賴 47m雄如… 有伸入對接腔121的第三接觸部 421第二接觸部421的自由端向後繼續延伸有盥 平行的抵擋部422。接地端子5包括槽的内壁大致 q 鶴針5匕括片狀的第四固持部5卜自第四固持部 2上側緣水平延伸的第四彈性臂52及自第四固持部51下側緣向外弯折的 焊接㈣。第四固持部51於鄰近第四彈性臂52的上部開設有開孔5ιι，該 開孔511可分散接地端子5的應力，從而可廷長該接地端子$的使用壽命。 請繼續參閲第三圖、第四圖所示，第一端子2及第二端子3均係自絕緣 蠼本體1的安裝面組裝。组裝第一端子2時，將第一固持部211與固定槽⑶ 對齊，並使彈性部213與收容部133對齊，再播麼第一端子2，最終使得第 -固持部211與固定槽131干涉而將第一端子2固持於第一收容槽，此 時，第一彈性臂22及連接部212位於容置槽132内，第一接觸部221凸伸 入對接腔121，而彈性部213對應收容於收容部〗33且部分突伸入對接腔 121(參第二圖所示）’接觸面214位於對接腔121内。第二端子3係自絕緣 本體1的安裝面組裝入第二收容槽14，第二固持部31固持於絕緣本體1的 側壁115 ’而第二接觸部321則凸伸入對接腔〗21(參第二圖所示），第二接 觸部321的導引部322可在對接連接器插入或拔出對接腔〗21的過程中起到 導引作用，從而防止第二端子3因第二接觸部32】的側緣受到對接連接器的 7 201023454 抵頂而發生變开；。第二端子4係自絕緣本體i的後端面組裝第三固持部 41固持於第三收容槽15，第三接觸部421則凸伸入對接腔121。接地端子5 係自絕緣本體1的頂壁U3組裝入第四收容槽16，其第四固持部51固持於 側壁115 ’第四彈性臂52凸露於頂壁113，而第四接觸部521貝,】穿過頂壁 113上形成的開口 161而凸伸入對接腔121。 請繼續參閱第五圖所示，當對接連接器2〇〇完全插入對接腔121後，第 第一第二及.第四接觸部221、321、421、521均與對接連接器200接 觸’第三端子4的第三彈性臂42彈性變形，使得抵擋部422抵靠於第三收 容715的内壁以防止第三彈性臂42過度變形。同時，對接連接器2〇〇的插 入端會與彈性部213的接觸面214接觸，並進一步擦壓彈性部213，從而使 ❹彈性213發生彈性形變，使得彈性部213的自由端朝向收容部阳内突伸 的^部134移動，直至彈性部213的自由端抵靠於支撐部134，此時，彈 陡邛213發生彈性形變而產生的彈力可增加對接連接器2〇〇的插入及拔出 力’支撐部m支撐彈性部213還可防止彈性部213過度變形^該彈性部 213彈性形變而產生的彈力，還可平衡對接連接器2〇〇的插入端所受的由第 -彈H臂42發生彈性形變時提供的彈力，從而避免了如現有電連接器中對 接連接器插入對接腔後因受力不平衡而向一側傾斜的現象發生。當對接連接 器200自對接腔121拔出後，彈性部213回復原狀。 明繼續參閲第六圖至第八圖所示，其顯示本發明的第二實施方式的電連 接1§ 100。該電連接器1〇〇’的結構與第一實施方式中電連接器1〇〇的結構 擊類似，不同點僅在於電連接器1〇〇,還增設了金屬件6〇 絕緣本體Γ於第三收容槽15，與抵擋部422，相對的内壁進一步向外凹設 有固持槽151，絕緣本體〗，自後端面112，凹設有扣持槽17，，該固持槽151， 與扣持槽17’分別位於對接腔121’的兩偾卜金屬件6由金屬片賴形成該 金屬件6包括矩开;的基部61、自基部61 一端向前延伸的播部&及自基部 61遠離撞部62的-端向前延伸的扣持部63。金屬件6自絕緣本體1，的後端 面112’組裝’並藉擋部62收容並固定於固持槽151’及扣持部砧扣持於扣 持槽Π而固定於絕緣本體i，，基部61貝，!凸露於後端面m，，金屬件6組 裝於f緣本體1’後，擋部62與第三端子4，的抵撞部422,相對設置。 s對接連接器(未圖示)插入對接腔121，後，第三端子4，的第三彈性臂42, 8 201023454 - 發生彈性變形，使得抵擋部422’朝向擋部62移動，並與擋部62相抵擋。該 金屬件6的設置，可使抵擋部422’與擋部62相抵擋，從而防止對接連接器 頻繁插拔時因抵擋部422’直接與第三收容槽15,的内壁干涉而產生塑朦屑， 進而可避免塑膠屑隨對接連接器黏附於端子的接觸部而破壞端子接觸的可 靠性。在其他實施方式中’金屬件6亦可僅包括擋部62，該擋部62與抵擒 部422’相抵擋，以防止抵擋部422’直接與第三收容槽15’的内壁干涉即可。 綜上前述’本發明確已符合發明專利之要件，爰依法提出申請專利。惟， 以上所述者僅係本發明之較佳實施方式，本發明之範圍並不以上述實施方式 爲限，舉凡熟習本案技藝之人士援依本發明之精神所作之等效修飾或變化， 皆應涵蓋於以下申請專利範圍内。 " ❹【圖式簡單說明】 第一圖係本發明電連接器第一實施方式的立體圖； 第二圖係第一圖所示電連接器另一角度的立體圖； 第三圖係第一圖所示電連接器的分解圖； 其顯示了電連接器與對接連 第四圖係第三圖所示另一角度的分解圖； 第五圖係沿第一圖中V-V線所示的剖視圖 接器對接後的狀態； 第六圖係本發明電連接器第二實施方式的立體圖； 第七圖係第六圖所示金屬件自電連接器分離八 第八圖係第六圖所示金屬件及第三端子自 j圖； 【主要元件符號說明】 伐15刀離的部分分解圖 電連接器 基部 後端面 底壁 對接部 第一收容槽 容置槽 支撐部 第三收容槽 100、100, 11 112’ 114 12 13 132 134 15、15， 絕緣本體 前端面 頂壁 側壁 對接腔 固定槽 收容部 第二收容槽 固持槽 111 、 111， 113 115 121 、 121’ 131 133 14 151， 201023454 第四收容槽 16 開口 161 扣持槽 17， 第一端子 2 主體部 21 第一固持部 211 連接部 212 彈性部 213 接觸面 214 第一彈性臂 22 第一接觸部 221 焊接部 23、33、43、53 第二端子 3 第二固持部 31 第二彈性臂 32 第二接觸部 321 導引部 322 第三端子 4、4， 第三固持部 41 第三彈性臂 42、42， 第三接觸部 421 抵擋部 422、422， 接地端子 5 第四固持部 51 開孔 511 第四彈性臂 52 第四接觸部 521 金屬件 6 基部 61 擋部 62 扣持部 63201023454 IX. Description of the Invention: The present invention relates to an electrical connector', and more particularly to an electrical connector that interfaces with a mating mating connector. [Prior Art] Chinese Utility Model Patent No. 200520074311.9 discloses an electrical connector including an insulative housing, a terminal held on the insulative housing, a shielding housing covering the insulative housing, and a holder i-side body The front end faces the back recess and is provided with a docking cavity. The holding member comprises a rectangular base portion and protrudes forwardly from the upper and lower sides of the base portion - an insertion of the elastic f and a vertical extension from the base portion. The retaining member is rear of the insulating body. The end face is assembled into the corresponding receiving groove and fixed to the insulating body by the insertion portion interfering with the insertion groove of the Ό f, and the elastic arm protrudes into the mating cavity. When the docking connector is fully inserted into the docking cavity, the oppositely disposed clamping portions of the two resilient arm ends of the holding member clamp the mating connector, thereby increasing the insertion and extraction force of the docking connector. The electrical connector It is necessary to separately set the holder to increase the insertion and extraction force of the mating connector, the m(10) capacity of the insulating body (4), and (4) the increase in the volume of the t-connection, which does not meet the development requirements of miniaturization; Adding a retainer will result in an increase in the cost of the electrical connector, which is not conducive to the long-term development of the enterprise. Therefore, it is hoped to design a new type of electrical connector. [Summary of the Invention] The technical problem to be solved by the present invention is to solve the technical problem to be solved by inserting and extracting the power of the docking connection @. Compared with the prior art, the protruding portion of the main body portion of the first terminal of the present invention protruding into the docking chamber can increase the insertion and extraction force of the mating connector, and can prevent the mating connector from being inserted into the docking chamber. Tilt to the back side. The invention is further illustrated by the following diagrams and embodiments. [Embodiment] Referring to the first and second figures, the electrical connector 1 of the present invention mainly includes an insulative housing 1 and a plurality of terminals held by the insulative housing 1. 201023454 - Referring to the third and fourth figures, the insulative housing i includes a rectangular base portion u and a cylindrical abutment portion 12 extending forward from the base portion η. The base portion n includes a front end surface (1), a rear end surface opposite to the front end surface iu, a top wall m, a bottom wall 114 disposed opposite the top wall 113, and two opposite side walls 115 connecting the top wall 113 and the bottom wall 1H, wherein the bottom wall 114 The bottom surface forms a mounting surface, and the abutting portion 12 is formed to extend forward from the front end ® m. The butt joint portion 12 is recessed with a cylindrical abutting cavity m'. The butt joint cavity 12i penetrates the base portion from the front to the rear. The butt connector (not shown) is inserted into the docking cavity 121 from the front to the rear. The base portion is recessed from the bottom surface of the two side walls ns respectively. The first and second receiving slots 13 and 14 are respectively disposed on opposite sides of the mating cavity ΐ2ΐ and communicate with the docking cavity 121. The first receiving slot 13 is provided. The accommodating portion 133 is formed by the accommodating groove 132 extending from the fixing groove 13 and extending from the fixing groove 131, and the accommodating portion 133 extending from the fixing groove 131. The accommodating groove 132 and the accommodating portion 133 are respectively connected to the splicing cavity. The inner wall of the connecting portion of the connecting portion protrudes forwardly from the inner wall. The insulating body is provided with a third receiving groove 15 from the rear end surface. The third receiving groove 15 and the second receiving groove 14 are located in the docking chamber. On the same side, j docking chamber m is connected. Insulating body! There is a fine groove 16, which is located on the same side of the docking chamber (2), and the fourth receiving slot 16 is from the top to the bottom. The top wall (1) and the side wall 115 of the body 1 are penetrated, and the butt chamber i2i is formed on the slit 113. Square opening 161 through which the third @ Please refer to, as shown in FIG fourth, said second terminal comprises - 2, n ® first grounding terminal 5 terminal. The first terminal 2 is formed by sheet metal stamping, and the first terminal 2 includes a sheet-shaped main body portion 21 and a first elastic arm 2 extending forward from the main body portion 21: = bent from the rear end edge of the main body portion 21 a flange portion extending and extending, the body portion 2 includes a connecting portion 212 for connecting the first holding portion 2u and the first elastic arm 22, and the connecting portion and the first holding portion 211 are located on the same plane, but with the first elasticity The arm η is not formed to extend forward in the middle position of the same plane holding portion 211, and the connecting portion 21: is wider than the first holding portion 211. The main Zhao Department 21 is also provided with an elastic new butt joint. The punched piece of the front end of the body portion 21 is rearwardly oriented and facing ί= :;= a holding portion 2U and a connecting portion 212 are formed on the first portion corresponding to the elastic piece. The first contact portion 221 formed at the front end of the elastic arm 22 is located on the same side of the first h sub- 2, and the first contact portion 221 is located at the front end of the first terminal 2. The elastic part commits 201023454 = has a meandering shape and has an arcuate contact surface 214 protruding into the docking cavity, and the contact surface 214 has an insulating layer such as insulating varnish to insulate the elastic 213, and the sigh has a snap connection and elasticity. The portion 213 is moved away from the first end connected to the first portion and the first holding portion. The elastic portion 213 is located at the free end of the second end 11, and the elastic portion 213 is also separated from the second terminal 2. In other embodiments, it may be fixed at the corresponding position of the first terminal 2. The second terminal 3 includes a sheet-shaped second holding portion 31, a second extending elastic arm 32, and a second elastic member 32 bent from the upper side edge of the second solid 31 toward the second elastic arm 32. The end of the end is formed by: the _3^, ^^^_ joint portion 33', the front end surface (1) and the side edge of the rear end surface extending the side wall n5 where the thin groove 14 is located. The third terminal 4 has a frame shape and includes a third side portion 4 formed by two sides of the two sides and a pair of oppositely disposed short frame sides. The inner side edge of the short side of the short frame is extended. A welded portion 43 formed by bending the third elastic arm 42 is formed. The third elastic arm 42 is provided with a right-eight-yang into the outer edge of the fairy-shoulder. The male contact has a third contact portion 421 extending into the butting chamber 121. The free end of the second contact portion 421 continues to extend rearwardly with a parallel resistance. Part 422. The grounding terminal 5 includes an inner wall of the groove, a fourth retaining portion 5, and a fourth elastic portion 52 extending horizontally from the upper edge of the fourth retaining portion 2 and a lower edge of the fourth retaining portion 51. Externally bent welding (4). The fourth holding portion 51 is provided with an opening 5 ιι adjacent to the upper portion of the fourth resilient arm 52. The opening 511 can disperse the stress of the grounding terminal 5, thereby lengthening the service life of the grounding terminal $. Referring to the third and fourth figures, the first terminal 2 and the second terminal 3 are assembled from the mounting surface of the insulating body 1. When the first terminal 2 is assembled, the first holding portion 211 is aligned with the fixing groove (3), and the elastic portion 213 is aligned with the receiving portion 133, and the first terminal 2 is re-broadcasted, so that the first holding portion 211 and the fixing groove 131 are finally made. The first terminal 2 is fixed to the first receiving slot by the interference. The first elastic arm 22 and the connecting portion 212 are located in the receiving groove 132. The first contact portion 221 protrudes into the mating cavity 121, and the elastic portion 213 corresponds to The contact surface 214 is received in the accommodating portion 33 and partially protrudes into the docking chamber 121 (shown in FIG. 2). The contact surface 214 is located in the mating cavity 121. The second terminal 3 is assembled from the mounting surface of the insulative housing 1 into the second receiving slot 14 , the second retaining portion 31 is fixed to the side wall 115 ′ of the insulative housing 1 , and the second contact portion 321 protrudes into the mating cavity 21 . As shown in the second figure, the guiding portion 322 of the second contact portion 321 can guide the insertion or removal of the docking connector into the docking cavity 21, thereby preventing the second terminal 3 from being blocked by the second contact portion. The side edge of 32] is changed by the top of the docking connector 7 201023454; The second terminal 4 is assembled from the rear end surface of the insulative housing i to the third receiving portion 41 and is fixed to the third receiving slot 15 , and the third contact portion 421 protrudes into the mating cavity 121 . The grounding terminal 5 is assembled from the top wall U3 of the insulative housing 1 into the fourth receiving slot 16, and the fourth retaining portion 51 is fixed to the side wall 115'. The fourth resilient arm 52 is exposed to the top wall 113, and the fourth contact portion 521 , protrudes into the docking cavity 121 through the opening 161 formed in the top wall 113. Continuing to refer to the fifth figure, when the docking connector 2 is fully inserted into the docking cavity 121, the first second and fourth contact portions 221, 321, 421, 521 are all in contact with the docking connector 200. The third elastic arm 42 of the three terminals 4 is elastically deformed such that the abutting portion 422 abuts against the inner wall of the third housing 715 to prevent the third elastic arm 42 from being excessively deformed. At the same time, the insertion end of the mating connector 2 is in contact with the contact surface 214 of the elastic portion 213, and further presses the elastic portion 213, so that the elastic portion 213 is elastically deformed, so that the free end of the elastic portion 213 faces the receiving portion. The inner protruding portion 134 moves until the free end of the elastic portion 213 abuts against the supporting portion 134. At this time, the elastic force generated by the elastic deformation of the elastic shovel 213 can increase the insertion and extraction of the mating connector 2 The force 'support portion m supporting the elastic portion 213 can also prevent the elastic portion 213 from being excessively deformed, the elastic force generated by the elastic portion 213 being elastically deformed, and balancing the first-elastic H-arm of the insertion end of the mating connector 2〇〇 42 The elastic force provided when the elastic deformation occurs, thereby avoiding the phenomenon that the mating connector is tilted to one side due to the unbalanced force after the insertion of the docking connector in the existing electrical connector. When the docking connector 200 is pulled out from the docking chamber 121, the elastic portion 213 returns to its original state. Referring to Figures 6 through 8, there is shown an electrical connection 1 § 100 of a second embodiment of the present invention. The structure of the electrical connector 1 〇〇 ' is similar to that of the electrical connector 1 第一 in the first embodiment, except that the electrical connector 1 〇〇 is added, and a metal member 6 〇 insulating body is added. The three receiving slots 15 are opposite to the resisting portion 422, and the inner wall is further recessed outwardly with a retaining groove 151. The insulating body is recessed from the rear end surface 112, and the retaining groove 151, the retaining groove 151, and the retaining groove 17' respectively, the two metal members 6 located in the butting chamber 121' are formed of a metal sheet, and the metal member 6 includes a base portion 61, a portion of the base portion 61 extending forward from one end of the base portion 61, and a distance from the base portion 61. The latching portion 63 of the end portion of the portion 62 extends forward. The metal member 6 is assembled from the rear end surface 112' of the insulative housing 1, and is received by the retaining portion 62 and fixed to the retaining groove 151', and the retaining portion is fixed to the insulating body i by the retaining groove, and the base portion 61 is fixed. After the metal member 6 is assembled to the f-edge body 1', the blocking portion 62 and the abutting portion 422 of the third terminal 4 are opposed to each other. The s mating connector (not shown) is inserted into the mating cavity 121, and then the third elastic arm 42, 8 201023454 of the third terminal 4 is elastically deformed, so that the resisting portion 422' moves toward the blocking portion 62, and the blocking portion 62 to resist. The metal member 6 is disposed such that the resisting portion 422 ′ can resist the blocking portion 62 , thereby preventing the plastic swarf from being generated by the interference portion 422 ′ directly interfering with the inner wall of the third receiving groove 15 when the mating connector is frequently inserted and removed. In addition, the reliability of the contact of the plastic chip with the mating connector being adhered to the contact portion of the terminal can be avoided. In other embodiments, the metal member 6 may include only the stopper portion 62, and the stopper portion 62 abuts against the abutting portion 422' to prevent the resisting portion 422' from directly interfering with the inner wall of the third receiving groove 15'. In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above-mentioned embodiments are merely preferred embodiments 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 able to make equivalent modifications or variations in accordance with the spirit of the present invention. It should be covered by the following patent application. BRIEF DESCRIPTION OF THE DRAWINGS The first drawing is a perspective view of a first embodiment of the electrical connector of the present invention; the second drawing is a perspective view of the electrical connector at another angle shown in the first figure; An exploded view of the electrical connector shown; it shows an exploded view of the electrical connector and the opposite end of the fourth figure shown in the third figure; the fifth figure is taken along the cross-sectional view shown by the VV line in the first figure. The sixth figure is a perspective view of the second embodiment of the electrical connector of the present invention; the seventh figure is the metal piece separated from the electrical connector shown in the sixth figure. And the third terminal is from the figure of j; [Description of the main components] The partial exploded view of the 15 knife is removed. The rear end face of the base connector is the butt joint of the first receiving groove, the receiving groove of the receiving groove, the third receiving groove 100, 100, 11 112' 114 12 13 132 134 15,15, Insulation body Front end side wall side wall docking cavity fixing groove accommodating part Second receiving groove holding groove 111, 111, 113 115 121 , 121' 131 133 14 151, 201023454 Fourth receiving slot 16 opening 161 holding groove 17 First terminal 2 main body portion 21 first holding portion 211 connecting portion 212 elastic portion 213 contact surface 214 first elastic arm 22 first contact portion 221 welded portion 23, 33, 43, 53 second terminal 3 second holding portion 31 Second elastic arm 32 second contact portion 321 guiding portion 322 third terminal 4, 4, third holding portion 41 third elastic arm 42, 42, third contact portion 421 resisting portions 422, 422, grounding terminal 5 fourth holding Portion 51 Opening 511 Fourth resilient arm 52 Fourth contact portion 521 Metal member 6 Base portion 61 Block portion 62 Buckle portion 63