201242186 六、發明說明： . 【發明所屬之技術領域】 本發明，是有關於連接器’對於藉由插頭及插座嵌合 而電連接的連接器’具備供檢出嵌合狀態用的開關功能。 【先前技術】 藉由將插頭及插座嵌合而電連接的連接器，若在電壓 被外加在插頭端子或插座端子的狀態下將端子彼此嵌合連 接的話，此連接時會發生漏電，而在接點部生成絕緣部， 或使電路基板發生，爲了防止此問題，習知的連接器是具 備將端子之間的嵌合狀態檢出用的開關部。 例如，在第8圖及第9圖是顯示習知的連接器的構造例 〇 第8圖，是將插座110的插座外殼111及插頭120的插頭 外殼121嵌合連接時，在插頭外殻121內形成由固定片131 及可動片132所構成的開關部，由將插座端子1 15收容的絕 緣壁1 1 1 a的側壁將可動片1 32朝外側推壓，將與固定片1 3 1 的接點接觸分離的構造。 其放大圖如第9圖（a )所示。 插座端子115及插頭端子125相互連接，且在嵌合移動 中因爲絕緣壁111a的先端與可動片132抵接而使連接尺寸 L!縮短，所在嵌合不完全的狀態下固定片131及可動片132 的接點132a會分離。 且如第9圖（b )所示以絕緣壁1 1 1 a的先端將可動片 -5- 201242186 132朝下方向推壓的情況也同樣地，插頭端子i25及插座端 子115在連接移動中會產生開關的切換，而無法將連接尺 寸Lz充分地確保，因爲在端子的移動中開關被切換，所以 插座110朝插頭120傾斜地嵌合的情況時也有在複數端子的 一部分連接之前就將開關切換的問題。 在專利文獻1的連接器中揭示以鎖定構件卡止在被鎖 定構件時的鎖定構件的復原變位使可動接點片從固定接點 片離合的構造。 但是在同公報揭示的連接器的開關構造中，可動接點 片的被推壓部是朝外殼的外側突出，因爲是成爲朝外部露 出的構造所以在連接器的連接時有可能會誤觸，而在連接 器的嵌合之前就使開關被切換。 進一步也有可能朝外部露出的可動片會變形，而使彈 性復原力損失。 [先行技術文獻] [專利文獻] [專利文獻1]日本特開2007-258012號公報 【發明內容】 (本發明所欲解決的課題） 本發明的目的爲提供一種嵌合檢知型連接器，由插頭 及插座所構成的連接器的連接檢出精度高，可有效達成插 頭及插座的小型化。 -6- 201242186 (用以解決課題的手段） 本發明的嵌合檢知型連接器，具備將插座及插頭的嵌 合狀態檢出的開關部之連接器，其特徵爲：前述插座的插 座外殼及前述插頭的插頭外殻之中，其中任一方的外殼是 具有朝向嵌合方向突出的臂狀的鎖定部，前述鎖定部具有 朝對於嵌合方向垂直交叉的內外方向可彈性變形且朝外側 方向突出的鎖定爪’另一方的外殻具有被卡止部，該被卡 止部是在該外殻的內側藉由前述鎖定爪的插入孔及被插入 該插入孔的鎖定爪的彈性朝外側方向復歸而卡止，前述開 關部是位於前述另一方的外殼的內側，並且由固定片及具 有彈性的可動片所構成，前述鎖定爪是卡止在前述被卡止 部時將可動片朝外側方向推壓，來進行開關的導通（ON )/斷開（OFF )的切換。 在此，開關部被設在外殼的內側，是爲了使開關部的 接點部不會露出外殻的外部。 本發明，鎖定爪是具備由朝外側方向補助彈性復歸的 彈性材所構成的復原補助構件也可以。 且只有在插座的插座端子及前述插頭的插頭端子爲嵌 合連接的狀態下才容許前述開關的導通（ON )/斷開（ OFF )的切換也可以。 在本發明中，在藉由將可動片朝外側方向推壓使開關 的導通（Ο N ) /斷開（〇 F F )切換的態樣中’插頭及插座 的嵌合之前，可動片是位於與固定片彈性接觸的狀態’該 201242186 插頭及插座嵌合的話，當鎖定爪朝外側彈 片朝外側推壓’使接點分離的態樣以外， 反在嵌合之前’從固定片及可動片遠離的 使可動片朝外側被推壓的話，藉由可動片 ，使導通（ON )/斷開（off )被切換的態 [發明的效果] 本發明的連接器，因爲是插頭外殼及 在其中任一方具有朝向嵌合方向突出的臂 一方的外殼是將前述鎖定部的鎖定爪被插 該另一方的外殼的內側，所以將插頭及插 出的開關部因爲也可以設在此另一方的外 可防止如習知的專利文獻1的方式誤與開 頭及插座的嵌合之前使導通（ON) /斷開 切換。 且設在一方的外殼中的臂狀的鎖定部 是配合與設在另一方的外殼的被卡止部卡 部的導通（ON ) /斷開（OFF )切換，所 插座端子的嵌合連接完成的同時或是比其 可動片朝外側被推壓，使接點從固定片分 成爲此固定片與接觸，藉由此開關部的切 加在插頭端子及插座端子之間的方式進行 以確實地防止漏電的發生。 且將插頭及插座的嵌合解開時，是將 性復歸時將可動 也包含：與其相 狀態，由鎖定爪 與此固定片接觸 樣。 插座外殼之中， 狀的鎖定部，另 入的插入孔設在 座的嵌合狀態檢 殼的內側，所以 關部接觸，在插 (OFF )狀態被 的鎖定爪，因爲 止的動作使開關 以在插頭端子及 更稍爲遲延地使 離，或是使接點 換而使電壓可外 設定的話，就可 鎖定部朝內側推 -8 - 201242186 壓將鎖定爪從被卡止部解除，此鎖定爪是朝內 因爲開關部的可動片也必然朝內側移動，所以 確實地切換的狀態下無法將插頭及插座的嵌合) 且藉由在鎖定爪具備復原補助構件，可使 的嵌合更強力，並且將插頭插入插座時的開關 ON )/斷開（OFF )切換，可以更確實。 【實施方式】 依據以下圖面說明本發明的連接器的構造召 本實施例雖是在插座設置鎖定爪，在插頭 的插入孔及開關部的例，但是插座及插頭的構 可以，不限定於本實施例。 如第1圖所示插座1 0是在絕緣性的樹脂製I 1 1的內部，形成筒狀的絕緣壁1 1 a，在內側收; 的先端連接的插座端子15。 插座外殼11是如第6圖（a)所示的外觀圖 側具有臂狀的鎖定部1 2、1 3。 臂狀的鎖定部1 2、1 3是從插座外殼1 1的側 20的嵌合方向突出，在其先端部附近具有朝向 鎖定爪12a、l3a。 鎖定部1 2、1 3是將插座外殼11的根部1 2d、 點朝與嵌合方向垂直交叉的內外方向彈性變形， 在此根部1 2 d、1 3 d及鎖定爪1 2 a、1 3 a之間 除部1 2b ' 1 3b，將此鎖定解除部朝內側推壓的 側移動的話 在開關部未 军開。 插頭及插座 部的導通（ 設有鎖定爪 造是相反也 的插座外殼 納與纜線1 4 在側部的兩 部朝向插頭 外側突出的 13d作爲支 具有鎖定解 話，鎖定被 -9 - 201242186 解除。 鎖定爪12a、13 a的嵌合方向先端側是朝向嵌合方向形 成朝內側傾斜的斜面部12c、13c，將鎖定爪12a、13a插入 後述的插頭20的插入孔22、23時導引插入方向。 插頭20是如第6圖（b )所示外觀圖，在絕緣樹脂製的 插頭外殻21的內側具有插頭端子25及鎖定爪12a、13a的插 入孔22 、 23 。 插入孔22、23，是具有位於比嵌合前的插座10的解放 狀態的鎖定爪1 2a、1 3 a的左右方向外側的突出先端部更內 側的滑接壁部22a、23a，將鎖定爪12a、13a插入此插入孔 22、23的話如第1圖（b)所示鎖定部12、13是藉由滑接壁 部22a、23 a朝內側被推壓而彈性變形。 兩側的插入孔22、23之中，在至少一方的插入孔22中 ，形成朝後側將滑接壁部22a切除的被卡止部22b，進一步 在其嵌合方向後側且在插頭外殻2 1的內側形成開關收容部 24 » 在開關收容部24中具有由導電性的固定片31及可動片 32所構成的開關部30 » 且插頭20的組裝時圓銷狀的4個插頭端子25，是在組 裝了纜線（無圖示）的狀態下從插頭外殼1 2的背面，插入 收容插頭端子25的孔。 開關部30是將零件的構造例顯示在第4圖，朝插頭外 殼2 1的組裝程序是如第7圖所不。 固定片31具有接點部31a，在本實施例中將基座部31b -10- 201242186 、3 1c呈L字型曲折，在基座部31c形成具有箭頭型爪部的 卡止部31d，如第7圖（b)所示只有插入被設在插頭外殼 2 1的背面的剖面L字型的收容部26地被組裝。 可動片3 2是將固定片3 1從背面側繞入的方式形成呈U 字形狀曲折的接點部32a，進一步其先端側可將被推壓部 3 2b彈性變形。 藉由如此構成，可以一邊抑制可動片32的嵌合方向的 尺寸一邊獲得良好的彈性特性。 可動片32也具有切口片32d’如第7圖（c)所示只要 插入被設在插頭外殻2 1背面的收容部27就可以組入。 將插座10及插頭20如第1圖（b)所示嵌合的話，鎖定 爪1 2 a、1 3 a是沿著插入孔2 2、2 3 —邊朝內側彈性變形一邊 進行，當鎖定爪12a、13 a位於被卡止部22b、23b時，如第 1圖（c)所示使鎖定爪12a、13a卡止於被卡止部22b、23b 的方式朝外側彈性復歸。 此狀態的放大圖如第2圖所示，可動片32的與被推壓 部32b的位置關係如第5圖所不。 鎖定爪1 2 a的外側先端部因爲是將可動片3 2的被推壓 部3 2b朝外側推壓，所以彈性變形並使接點部32a、3 la遠 離。[Technical Field] The present invention relates to a connector for a connector that is electrically connected by a plug and a socket, and has a switch function for detecting a fitting state. [Prior Art] If the connector is electrically connected by fitting the plug and the socket, if the terminals are fitted to each other in a state where the voltage is applied to the plug terminal or the socket terminal, leakage occurs during the connection, and In order to prevent this problem, the conventional connector is provided with a switch portion for detecting a fitting state between the terminals, in order to prevent the problem from occurring in the contact portion. For example, FIGS. 8 and 9 are diagrams showing a configuration example of a conventional connector. FIG. 8 is a view showing a plug housing 111 of the socket 110 and a plug housing 121 of the plug 120. A switch portion including the fixing piece 131 and the movable piece 132 is formed in the inside, and the movable piece 1 32 is pushed outward by the side wall of the insulating wall 1 1 1 a in which the socket terminal 151 is housed, and the fixed piece 1 3 1 is pressed. The contacts contact the separated construction. The enlarged view is shown in Fig. 9(a). The socket terminal 115 and the plug terminal 125 are connected to each other, and the connection dimension L! is shortened because the tip end of the insulating wall 111a abuts against the movable piece 132 during the fitting movement, and the fixing piece 131 and the movable piece are in a state in which the fitting is incomplete. The contact 132a of 132 will be separated. Further, as shown in FIG. 9(b), in the case where the movable piece 5 - 201242186 132 is pushed downward by the tip end of the insulating wall 1 1 1 a, the plug terminal i25 and the socket terminal 115 are connected in the same manner. The switching of the switch is generated, and the connection size Lz cannot be sufficiently ensured, because the switch is switched during the movement of the terminal, so that the socket 110 is obliquely fitted toward the plug 120, and the switch is switched before a part of the plurality of terminals are connected. problem. In the connector of Patent Document 1, a configuration in which the movable contact piece is disengaged from the fixed contact piece by the restoring displacement of the locking member when the locking member is locked to the locked member is disclosed. However, in the switch structure of the connector disclosed in the same publication, the pressed portion of the movable contact piece protrudes toward the outside of the casing, and since it is exposed to the outside, there is a possibility that the connector is accidentally touched when the connector is connected. The switch is switched before the connector is fitted. Further, it is also possible that the movable piece exposed to the outside is deformed, and the elastic restoring force is lost. [PRIOR ART DOCUMENT] [Patent Document 1] [Patent Document 1] JP-A-2007-258012 SUMMARY OF THE INVENTION (Problems to be Solved by the Invention) An object of the present invention is to provide a fitting detection type connector. The connection of the connector composed of the plug and the socket has high detection accuracy, and the size of the plug and the socket can be effectively reduced. -6- 201242186 (Means for Solving the Problem) The fitting detection type connector of the present invention includes a connector for a switch portion that detects a fitting state of a socket and a plug, and is characterized in that: the socket housing of the socket And one of the plug housings of the plug, wherein the outer casing has an arm-shaped locking portion that protrudes toward the fitting direction, and the locking portion has an elastically deformable inner and outer direction that intersects perpendicularly to the fitting direction and faces outward. The protruding locking claw 'the other outer casing has a locked portion which is an outer side of the outer side of the outer casing by the insertion hole of the locking claw and the locking claw inserted into the insertion hole The switch portion is located inside the other outer casing, and is composed of a fixing piece and an elastic movable piece. When the locking claw is locked to the locked portion, the movable piece faces outward. Push to switch the conduction (ON) / OFF (OFF) of the switch. Here, the switch portion is provided inside the casing so that the contact portion of the switch portion does not protrude outside the casing. In the present invention, the lock claw may be a restoration assisting member including an elastic material that is elastically restored in the outward direction. The switching of the ON/OFF of the switch may be permitted only when the socket terminal of the socket and the plug terminal of the plug are in a state of being fitted. In the present invention, the movable piece is located before the fitting of the plug and the socket in the state in which the switch is turned on (Ο N ) / turned off (〇FF ) by pushing the movable piece in the outward direction. The state in which the fixing piece is in elastic contact 'The 201242186 plug and the socket are fitted, and when the locking claw is pushed outward toward the outer elastic piece', the contact is separated, and the front piece is separated from the fixed piece and the movable piece before the fitting. When the movable piece is pushed outward, the state in which the ON/OFF is switched by the movable piece. [Effect of the Invention] The connector of the present invention is a plug housing and is in either of them. The outer casing having one arm protruding in the fitting direction is such that the locking claw of the lock portion is inserted into the inner side of the other outer casing, so that the plug and the inserted switch portion can be prevented from being provided on the other side. In the conventional method of Patent Document 1, the ON/OFF switching is performed before the fitting of the opening and the socket. Further, the arm-shaped locking portion provided in one of the outer casings is engaged with the ON/OFF of the locked portion of the other housing, and the fitting connection of the socket terminals is completed. At the same time, the movable piece is pushed toward the outside, so that the contact is divided into the contact piece from the fixing piece, and the switching portion is cut between the plug terminal and the socket terminal to be surely Prevent leakage. When the fitting of the plug and the socket is released, it is movable when the property is reset. It also includes: the state of the phase is matched with the fixing piece by the locking claw. Among the socket housings, the locking portion is provided, and the additional insertion hole is provided inside the fitting state of the seat, so that the closing portion is in contact with the locking claw that is in the OFF state, because the stop action causes the switch to When the plug terminal is slightly delayed or the contact is changed so that the voltage can be set externally, the locking portion can be pushed inwardly - 8 - 201242186 Pressing the locking claw from the locked portion, the locking claw In the case where the movable piece of the switch portion is inevitably moved inward, the plug and the socket cannot be fitted in a state where the switch is reliably switched, and the restoring member is provided in the lock claw, so that the fitting can be made stronger. And the switch ON) / OFF (OFF) when the plug is inserted into the socket can be more reliable. [Embodiment] The structure of the connector of the present invention will be described with reference to the following drawings. In the embodiment, the locking claw is provided in the socket, and the insertion hole and the opening portion of the plug are provided. However, the configuration of the socket and the plug may not be limited to This embodiment. As shown in Fig. 1, the socket 10 is a socket terminal 15 to which a cylindrical insulating wall 11a is formed inside an insulating resin, and a front end is connected to the inside. The socket housing 11 has arm-shaped locking portions 1 2, 1 3 on the outer side as shown in Fig. 6(a). The arm-shaped locking portions 1 2, 13 protrude from the fitting direction of the side 20 of the socket housing 1 1 and have the locking claws 12a, 13a in the vicinity of the leading end portion thereof. The locking portions 1 2 and 1 3 are elastically deformed in the inner and outer directions in which the root portion 1 2d of the socket housing 11 and the point intersect perpendicularly to the fitting direction, and the root portions 1 2 d, 1 3 d and the locking claws 1 2 a, 1 3 When the part 1 2b ' 1 3b is moved between the sides of the lock release portion, the switch portion is not opened. The plug and the socket part are connected (the locking claw is provided to the opposite side of the socket housing and the cable 1 4 in the side of the two parts protruding toward the outside of the plug 13d as a support with a locking solution, the lock is released by -9 - 201242186 The fitting end side of the locking claws 12a and 13a is formed by the inclined surface portions 12c and 13c which are inclined toward the inner side in the fitting direction, and the insertion claws 12a and 13a are inserted into the insertion holes 22 and 23 of the plug 20 to be described later. The plug 20 is an external view as shown in Fig. 6(b), and has insertion holes 22 and 23 for the plug terminal 25 and the locking claws 12a and 13a inside the plug case 21 made of insulating resin. The insertion holes 22, 23 The sliding wall portions 22a and 23a are provided on the inner side in the left-right direction of the locking claws 1 2a and 1 3 a in the liberated state of the socket 10 before the fitting, and the locking claws 12a and 13a are inserted therein. When the holes 22 and 23 are inserted, the lock portions 12 and 13 are elastically deformed by the sliding wall portions 22a and 23a being pressed inward as shown in Fig. 1(b). Among the insertion holes 22 and 23 on both sides. In at least one of the insertion holes 22, the sliding wall is formed toward the rear side The locked portion 22b cut by the portion 22a further has a switch accommodating portion 24 formed on the inner side of the plug housing 21 in the fitting direction rear side thereof. The switch housing portion 24 has a conductive fixing piece 31 and a movable piece. In the switch portion 30 of the 32, the four plug terminals 25 in the form of a round pin in the assembly of the plug 20 are inserted into the receiving plug terminal from the rear surface of the plug housing 1 2 in a state in which a cable (not shown) is assembled. The opening of the switch unit 30 is shown in Fig. 4, and the assembly procedure for the plug housing 21 is as shown in Fig. 7. The fixing piece 31 has a contact portion 31a, which in this embodiment The base portions 31b -10- 201242186 and 3 1c are bent in an L shape, and a locking portion 31d having an arrow-shaped claw portion is formed in the base portion 31c, and only the insertion is provided in the plug housing as shown in Fig. 7(b). The L-shaped accommodating portion 26 of the back surface of the second surface is assembled. The movable piece 3 2 is formed by forming a contact portion 32a which is bent in a U shape so as to wind the fixing piece 31 from the back side, and further has a tip end side thereof. The pressed portion 32b can be elastically deformed. With such a configuration, the movable piece 32 can be suppressed while being The size of the fitting direction is excellent in elastic properties. The movable piece 32 also has the slit piece 32d' which can be assembled as shown in Fig. 7(c) by simply inserting the accommodating portion 27 provided on the back surface of the plug housing 21. When the socket 10 and the plug 20 are fitted as shown in Fig. 1(b), the locking claws 1 2 a and 1 3 a are elastically deformed toward the inner side along the insertion holes 2 2, 2 3 , while the locking claws are engaged. When the 12a and 13a are located in the locked portions 22b and 23b, as shown in Fig. 1(c), the locking claws 12a and 13a are elastically returned to the outside so as to be locked to the locked portions 22b and 23b. The enlarged view of this state is as shown in Fig. 2, and the positional relationship between the movable piece 32 and the pressed portion 32b is as shown in Fig. 5. Since the outer tip end portion of the lock pawl 1 2 a pushes the pressed portion 32b of the movable piece 3 2 outward, it is elastically deformed and the contact portions 32a and 3la are distant.
由此一邊充分地確保插座端子15及插頭端子25的連接 時間點（加長連接尺寸L ) ’ 一邊使開關部3 0從導通（ON )朝斷開（OFF)切換，就可以將其檢出並使插座端子 及插頭端子25電連接的方式設定電路。 -11 - 201242186 在本實施例中是在臂狀的鎖定部12、13及絕緣壁lla 之間安裝了呈U字形狀曲折的復原補助構件1 6的例 臂狀的鎖定部是因爲有需要絕緣性而由樹脂成形。 在此爲了補強樹脂的彈力的目的而將板彈簧呈U字狀 曲折，將一方的側片1 6 a固定在絕緣壁1 1 a外側的側面，將 另一方的側片16b與鎖定爪12a的內側12e抵接。 與上述相反地將插座20及插頭10的嵌合連接解除的情 況時’如第3圖所示將鎖定部1 2b、1 3b以推壓力f朝內側朝 箭頭的方向推壓的話，鎖定爪1 2 a、1 3 a會朝內側彈性變形 ，遠離被卡止部22b、23b。 與其同時因爲可動片32的被推壓部32b朝內側彈性復 歸所以接點部3 2 a會與固定片3 1的接點部3 1 a接觸》 因此，開關部30的開關未切換的話，無法將插座1 〇從 插頭2 0拔取。 【圖式簡單說明】 [第1圖]顯示本發明的連接器的構造例，（a )是顯示 插座及插頭的嵌合前的狀態，（b)是顯示嵌合途中的狀 態’（c )是顯示藉由嵌合完成使開關部切換的狀態。 [第2圖]顯示開關部的放大圖，（a)是顯示插頭及插 座的嵌合途中’ （b)是顯示藉由嵌合完成使開關部切換 的狀態。 [第3圖]顯示顯示將設在插座的鎖定部朝內側推壓，將 插頭及插座的嵌合解開的操作。（a )是顯示將兩側的鎖 -12- 201242186 定解除部朝內側推壓的狀態，（b )是顯示那時的開關部 的放大圖。 [第4圖]顯示開關部的零件構成例。（a )是顯示固定 片及可動片的位置關係，（b)是顯示將固定片及可動片 分離的狀態。 [第5圖]顯示鎖定爪插入鎖定孔，使開關部切換的狀態 。（a)是顯示插頭及插座的嵌合前，（b)是顯示嵌合後 〇 [第6圖]顯示插頭及插座的嵌合面的立體圖。（a)是 顯示插座，（b)是顯示插頭。 [第7圖]顯示從插頭的背面（嵌合方向相反側的面）將 固定片及可動片組入的狀態。（a )是顯示將開關部組入 插座之目U ’ （ b )是顯不將固定片組裝的狀態，（c )是顯 示將可動片組裝的狀態。 [第8圖]顯示習知的連接器的構造例。 [第9圖]顯示習知的連接器的開關部的構造例。 【主要元件符號說明】 10 :插座 1 1 :插座外殼 1 1 a :絕緣壁 1 2，1 3 :鎖定部 12a，13a :鎖定爪 12b ’ 13b :鎖定解除部 -13- 201242186 1 2 c，1 3 c :斜面部 1 2 d，1 3 d :根部 1 2 e :內側 1 4 :纜線 1 5 :插座端子 1 6 :復原補助構件 16a :側片 16b :側片 2 0 :插頭 2 1 :插頭外殼 22，23 :插入孔 2 2 a，2 3 a :滑接壁部 22b，23b:被卡止部 24 :開關收容部 25 :插頭端子 2 6 :收容部 27 :收容部 3 0 :開關部 3 1 :固定片 3 1 a :接點部 3 1 b :基座部 3 1 c :基座部 3 1 d :卡止部 32 :可動片 -14 - 201242186 3 2 a :接點部 3 2 b :被推壓部 32d :切口片 1 10 :插座 1 1 1 :插座外殻 1 1 1 a :絕緣壁 1 1 5 ‘·插座端子 1 2 0 :插頭 1 2 1 :插頭外殼 125 :插頭端子 1 3 1 :固定片 132 :可動片 132a :接點Therefore, while the connection time point (lengthened connection size L) ' of the socket terminal 15 and the plug terminal 25 is sufficiently ensured, the switch unit 30 can be detected by switching from ON (ON) to OFF (OFF). A circuit is provided to electrically connect the socket terminal and the plug terminal 25. -11 - 201242186 In the present embodiment, an arm-shaped locking portion in which a restoration assisting member 16 that is bent in a U shape is attached between the arm-shaped locking portions 12 and 13 and the insulating wall 11a is used because insulation is required. It is formed of resin. Here, in order to reinforce the elastic force of the resin, the leaf spring is bent in a U shape, and one side piece 16a is fixed to the side surface outside the insulating wall 1 1 a, and the other side piece 16b and the locking claw 12a are fixed. The inner side 12e abuts. When the fitting connection of the socket 20 and the plug 10 is reversed as described above, when the locking portions 1 2b and 13b are pressed inward in the direction of the arrow with the pressing force f as shown in FIG. 3, the locking claw 1 is locked. 2 a, 1 3 a will be elastically deformed toward the inner side, away from the locked portions 22b, 23b. At the same time, since the pressed portion 32b of the movable piece 32 is elastically returned to the inner side, the contact portion 3 2 a comes into contact with the contact portion 3 1 a of the fixed piece 3 1 . Therefore, if the switch of the switch portion 30 is not switched, the switch portion 30 cannot be switched. Take the socket 1 〇 out of the plug 2 0. BRIEF DESCRIPTION OF THE DRAWINGS [Fig. 1] shows a configuration example of a connector according to the present invention, wherein (a) shows a state before fitting of a socket and a plug, and (b) shows a state in which a socket is fitted (c). It is a state in which the switching unit is switched by the fitting completion. [Fig. 2] shows an enlarged view of the switch unit, (a) shows the state in which the display plug and the socket are fitted, and (b) shows a state in which the switch unit is switched by the fitting completion. [Fig. 3] The display shows the operation of pushing the lock portion provided in the socket toward the inside and unfastening the fitting of the plug and the socket. (a) is a state in which the lock -12-201242186 fixed release portions on both sides are pressed inward, and (b) is an enlarged view showing the switch portion at that time. [Fig. 4] An example of a component configuration of the switch unit is shown. (a) shows the positional relationship between the fixed piece and the movable piece, and (b) shows the state in which the fixed piece and the movable piece are separated. [Fig. 5] shows the state in which the lock claw is inserted into the lock hole to switch the switch portion. (a) Before the fitting of the display plug and the socket, and (b) after the display is fitted, [Fig. 6] is a perspective view showing the fitting surface of the plug and the socket. (a) is the display socket and (b) is the display plug. [Fig. 7] A state in which the fixing piece and the movable piece are assembled from the back surface of the plug (the surface opposite to the fitting direction). (a) is a state in which the switch unit is placed in the socket U' (b) is a state in which the fixing piece is not assembled, and (c) is a state in which the movable piece is assembled. [Fig. 8] A configuration example of a conventional connector is shown. [Fig. 9] A configuration example of a switch portion of a conventional connector is shown. [Description of main component symbols] 10: Socket 1 1 : Socket housing 1 1 a : Insulating wall 1 2, 1 3 : Locking portion 12a, 13a: Locking claw 12b ' 13b : Locking release portion - 13 - 201242186 1 2 c, 1 3 c : Inclined face 1 2 d, 1 3 d : Root 1 2 e : Inside 1 4 : Cable 1 5 : Socket terminal 1 6 : Restoration aid member 16a : Side piece 16b : Side piece 2 0 : Plug 2 1 : Plug housings 22, 23: insertion holes 2 2 a, 2 3 a : sliding wall portions 22b, 23b: locked portions 24: switch housing portions 25: plug terminals 2 6 : housing portions 27: housing portions 3 0: switches Part 3 1 : Fixing piece 3 1 a : Contact part 3 1 b : Base part 3 1 c : Base part 3 1 d : Locking part 32 : Movable piece 14 - 201242186 3 2 a : Contact part 3 2 b : pressed portion 32d : slit sheet 1 10 : socket 1 1 1 : socket housing 1 1 1 a : insulating wall 1 1 5 '· socket terminal 1 2 0 : plug 1 2 1 : plug housing 125 : plug Terminal 1 3 1 : fixing piece 132 : movable piece 132a : contact