201131899 六、發明說明： 【發明所屬之技術領域】 本發明是關於電路基板用電連接器。 【先前技術】 作爲電連接器，已知有專利文獻1的電連接器。在專 利文獻1，揭示有：大致長方體外形的殼體、在相對於電 路基板成直角而互相相對向的該殼體的兩個側面排列有複 數個端子的電連接器。該電連接器的端子，是具有：在殻 體的側面處形成的作爲凹部的收容部所收容的主體片、從 該主體片的上端朝上方延伸而與電路基板連接的固定端子 片、以及從該主體片的下端延伸，朝向下方凸狀彎曲而與 其他電路基板彈性接觸的接觸端子片。上述固定端子片， 具有上半部與下半部，上半部朝電路基板的後述端子插通 孔插通，下半部與殼體的側面之間隔著一定的間隙而沿著 該側面延伸。 在固定有上述固定端子片的電路基板，形成有：用來 插通該固定端子片的上半部的端子插通孔。互相相對向而 以殼體的收容部所保持的一對端子，其固定端子片彼此的 自由狀態的間隔，是較該端子插通孔彼此的間隔更窄。於 是，當將電連接器安裝於電路基板時，一對固定端子片彈 性變形而互相分離讓間隔加寬，而插通於對應的端子插通 孔。結果，將該固定端子片的下半部與殼體的側面的間隔 加寬。該固定端子片，藉由在該電路基板的上面側焊接連 -5- 201131899 接，而固定於電路基板。 在上述專利文獻1，藉由焊接安裝而以充分的強度將 固定端子片固定，所以不需要用來輔助電連接器的保持固 定的保持配件等。 [先前技術文獻] [專利文獻] [專利文獻1 ] 日本特開2002 — 15793 【發明內容】 [發明欲解決的課題] 可是，在上述專利文獻1的電連接器，在安裝於電路 基板之前，在上述固定端子片的下半部與殼體的側面之間 ，涵蓋該下半部的全區域形成有間隙。當將上述電連接器 安裝於電路基板時，藉由電路基板的端子插通孔’固定端 子片受到朝遠離殼體側面的方向的力’結果’藉由固定端 子片的彈性變形讓該間隙更加寬。也就是說’在該固定端 子片的下半部與殼體的側面之間經常形成有間隙，所以可 能會因爲不經意的外力導致殼體在該間隙的範圍偏離正規 位置。 鑑於這種情形’本發明要提供—種電路基板用電連接 器，藉由將殼體的位置固定’來確實地防止殻體從正規位 置偏移。 -6 · 201131899 [用以解決課題的手段] 本發明的電路基板用電連接器，是安裝於電路基板上 的電連接器，具備有：殼體、以及在互相相對向的殻體的 兩個側面處分別排列，形成有藉由該殼體所保持的被保持 部的複數的端子；該端子，除了該被保持部之外，具有： 形成於上述電路基板側的端部，與該電路基板連接的第一 連接部、形成於該電路基板側的相反側的端部，與另外的 電路基板連接的第二連接部、以及在該第一連接部與第二 連接部之間沿著上述側面延伸的側面相對向部。 在電路基板用電連接器，在本發明，上述端子的側面 相對向部，在靠近第二連接部的位置，在與上述殻體的側 面之間具有間隙，在靠近第一連接部的位置，具有彈性壓 力地與上述側面抵接，與其中一方的側面抵接的端子的側 面相對向部、以及與另一方的側面抵接的端子的側面相對 向部，夾持著殼體。 在殼體的兩側面處排列的端子的側面相對向部’具有 彈性壓力地抵接於分別相對向的殼體的側面，夾持該殼體 ，藉此固定著該殼體的位置。而側面相對向部與殼體的側 面抵接的是焊接固定於電路基板的第一連接部附近的位置 ，所以藉由在該位置夾持殻體，而增大殼體的保持力’讓 保持變得確實。 在殼體的側面，形成有：在與第一連接部之間形成有 間隙的缺口部較佳。藉由將在與端子的第一連接部之間形 □ 201131899 成有間隙的缺口部，形成於殻體的側面，則當第~連接部 與電路基板的對應電路部焊接連接時，銲錫也流入到該缺 口部內，所以這裡能形成很大的銲錫焊縫。於是，能將端 子甚至是連接器對於電路基板更堅固地固定。 在殼體的側面，形成有：與端子的側面相對向部的長 軸方向的一部分相對向而開口的凹部較佳。藉由將該凹部 形成於殼體的側面，則假設即使銲錫及焊劑於端子的側面 相對向部與殼體的側面之間，因爲毛細現象上升，而在上 述凹部的位置，上述側面相對向部與側面的間隔還是很大 很寬，所以銲錫及焊劑不會從該凹部的位置上升。於是， 銲錫及焊劑不會到達至第二連接部，所以可以確保第二連 接部與其他電路基板的良好連接狀態。 [發明效果] 如上述，在本發明，端子的側面相對向部具有彈性壓 力地與殻體的兩側面抵接，藉由該側面相對向部夾持殼體 ，所以即使殼體受到不經意的外力也能防止該殼體偏離正 規位置。側面相對向部，在焊接固定於電路基板的第一連 接部附近的位置，與殼體的側面抵接而夾持該殼體，所以 藉此讓殻體的保持力增大，讓保持變得確實。 【實施方式】 以下根據附圖，來說明本發明的實施方式。 第1圖是顯示本實施方式的電連接器的立體圖。第2圖 -8 - 201131899 是第1圖的電連接器的Π— II剖面圖，顯示在端子 電連接器的剖面。本實施方式的電連接器1 (以 「連接器1」），安裝於電路基板上，並且與從 的其他電路基板接觸，是用來將兩個電路基板彼 的電連接器（參考第2圖）。 連接器1，具有：大致長方體外形的殼體10 相對於電路基板的面構成直角而互相相對向的該 兩個側面處分別等間隔地排列，以後述的被保持 該殼體1 〇的複數的端子20。排列於上述兩個側面 ，如第1圖所示，在端子排列方向在同位置被保 複數對，各對端子彼此互相相對向。以下，將殼 側面的端子彼此相對向的方向（第2圖的左右方 「端子相對向方向」。 殼體1 〇的上述兩側面，在端子排列方向的 '端 如第1圖及第2圖所示，上側部分在端子相對向方 狀彎曲形狀而沒入，該沒入部分，形成爲：將後 的彎曲部23收容而用來保持該端子20的保持溝部 2圖所示，該保持溝部1 1，在端子相對向方向沒 10的中央部附近。 在上下方向的上述兩側面的中間部分，如穿 ，形成有：在端子排列方向的各端子位置互相相 上下方向延伸的成對的兩個突條部1 2複數對。以 個突條部1 2、與位於該兩個突條部1 2之間的殼體 ’來形成溝部，該溝部，其功能是作爲：用來將 位置的該 下僅稱爲 上方帶來 此電連接 、以及在 殼體10的 部保持於 的端子20 持而作成 體1 〇的兩 向）稱爲 子位置， 向作成凹 述端子2 0 1 1。如第 入至殼體 $ 1圖所示 對向而朝 成對的兩 1 0的側面 後述的端 -9 - 201131899 子20的側面相對向部予以收容的收容溝部1 4 °也就是說’ 位於上述成對的兩個突條部1 2之間的殻體1 0的側面’構成 收容溝部1 4的底面。以下將該側面稱爲「溝底面1 3」° 如第2圖所示，在上述溝底面13的上下方向中間部’ 形成有：與後述端子20的側面相對向部24的長軸方向（上 下方向）的一部分相對向而開口的沒入部15°該沒入部15 ，是在上述端子相對向方向沒入至連接器1的中央部附近 〇 殼體1 0的上述兩側面的各收容溝部1 4的下方位置’也 就是下端側部分，如第2圖所示’形成有：在連接器相對 向方向，較上述溝底面13更朝殼體1〇的中央部側沒入而缺 口的缺口部16。如第2圖所示，該缺口部16朝下方開放。 第3圖，是顯示將第1圖的連接器1的複數對的端子20 的其中一對從殼體取出的狀態的立體圖。以下，參考第1 圖、第2圖及第3圖針對端子20加以說明。端子20，是將衝 裁金屬板所得到的帶條片在板厚方向彎曲所作成。該端子 20，具有：形成於下端部而與電路基板P1連接的第一連接 部21、形成於上端部而與其他電路基板P2連接的第二連接 部22、從該第二連接部22延伸而收容於殻體1 0的保持溝部 11內的橫U字型的彎曲部23、以及沿著殻體10的溝底面13 延伸而將上述彎曲部23及第一連接部2 1連結的直線狀的側 面相對向部24。 如第2圖所示，上述彎曲部23，作成大致橫U字型，是 由：在上下方向相對向而朝端子相對向方向（橫方向）延 -10- 201131899 伸的兩個腕部、與將該兩個腕部的端部彼此連結的連結部 所構成。上述兩個腕部之中位於下側的下腕部’其功能是 作爲保持於殻體1〇的被保持部23A。如第3圖所示’在該被 保持部2 3 A的兩緣部’形成有：朝該被保持部2 3 A的寬度 方向突出的複數的被保持突部23 A— 1 ’藉由讓該被保持突 部23A — 1咬入於殼體1〇的保持溝部I1的相對向內壁面’而 保持住該被保持部2 3 A。上述兩個腕部之中位於上側的上 腕部與連結部所構成的部分，其功能是作爲：當另外的電 路基板P2與第二連接部22接觸時’可讓該第二連接部22彈 性移位的可撓性的彈性腕部23B。該彈性腕部23B ’如第2 圖所示，其前端側部分朝向斜上方彎曲而從殻體1 〇的上壁 朝上方突出，移向第二連接部22。 側面相對向部24，收容於殼體1〇的收容溝部14內’從 上述彎曲部23的被保持部23A的端部朝向下方沿著殼體1〇 的溝底面1 3延伸。該側面相對向部24，如第2圖所示’在 靠近上端的位置的部分在與上述溝底面1 3之間具有間隙’ 並且靠近下端的位置的部分，具體來說’在較沒入部1 5更 下方位置的部分，是具有彈性壓力而與上述溝底面13抵接 。也就是說，該側面相對向部24，隨著朝向下方，漸漸朝 向溝底面1 3，以靠近下端的位置的部分相接’換言之，延 伸成讓該側面相對向部24與溝底面1 3的間隙漸漸變窄。 如第2圖所示，第一連接部21，在上下方向在與殼體 1 〇的底面大致相同的位置，從側面相對向部24的下端部起 大致直角地彎曲，朝離開殼體1 〇的方向延伸。第一連接部 -11 - 201131899 2 1以其下面可焊接連接於電路基板P 1的對應電路部（沒有 圖示）。 第二連接部22，從彎曲部23的彈性腕部23B延伸，在 較殼體10的上面更上方的位置，彎曲成朝端子相對向方向 的殼體1 〇的中央部側捲入。如第2圖所示，該第二連接部 22的捲入的前端朝向下方》該第二連接部22，可藉由彎曲 部2 3的彈性腕部2 3 B及該第二連接部2 2的撓曲變形而彈性 移位。 接著，針對連接器1的組裝來說明。連接器1，在殻體 10的兩側面的保持溝部1 1內，將端子20的彎曲部23從凸彎 曲部分側壓入，藉由安裝該端子20來組裝。具體來說，藉 由上述彎曲部23的壓入，讓該彎曲部23的被保持部23A的 被保持突部23A-1咬入於保持溝部11的內壁面，將端子20 保持於殼體10。 在端子20已安裝於殼體1 0的狀態，側面相對向部24， 收容於收容溝部14內。該側面相對向部24，延伸成隨著朝 向下方漸漸接近溝底面1 3，在靠近該側面相對向部24的下 端的位置，具有彈性壓力地抵接於溝底面1 3。結果，讓在 殼體10的兩側面處分別安裝的端子20的側面相對向部24， 具有彈性地抵接於該殻體的兩溝底面13,藉此讓複數對 的端子20的側面相對向部24在兩側夾持該殻體10。而完成 連接器1的組裝。 在本實施方式，連接器1，在殻體10的各收容溝部Μ 的下方位置形成有缺口部1 6 ’如第2圖所示，側面相對向 -12- 201131899 部24的下端側部分及第一連接部2 1，在與殻體1 〇之間在端 子相對向方向隔著間隔。 接著，針對利用連接器1來達成兩個電路基板彼此的 連接來說明。首先，如第2圖所示，連接器1，配置於電路 基板Ρ1上，藉由將第一連接部21與電路基板Ρ1的對應電路 部（沒有圖示）焊接連接，來安裝於電路基板Ρ1加以固定 〇 如上述，在本實施方式，藉由缺口部1 6的存在，在側 面相對向部24的下端側部分及第一連接部2 1與殻體1 0的側 面之間形成有間隙。於是，當該第一連接部2 1與對應電路 部焊接連接時，銲錫附著至從端子20的側面相對向部24移 向第一連接部2 1的彎曲部分，形成銲錫焊縫。此時’上述 缺口部1 6內，也就是在側面相對向部24的下端側部分與殼 體1 〇的側面之間形成足夠的空間，所以這裡能形成很大的 銲錫焊縫。結果，能將端子20甚至是連接器1對於電路基 板Ρ 1堅固地固定。 在本實施方式，在殼體10的溝底面】3形成有沒入部15 ’在該沒入部1 5的位置，端子2 0的側面相對向部2 4與溝底 面1 3的間隔很大。於是，假設即使銲錫及焊劑於端子2 〇的 側面相對向部2 4與溝底面1 3之間藉由毛細現象而上升’該 銲錫及焊劑也不會從上述沒入部1 5的位置上升。結果’銲 錫及焊劑不會到達至第二連接部2 2 ’所以能確保第二連接 部22與其他電路基板Ρ2的良好連接狀態。 接著，如第2圖的箭頭所示’將其他的電路基板Ρ2帶 -13- 201131899 到連接器I的上方，設定在預定位置。當該其他的電路基 板P2設定於預定位置時，第二連接部22與設置於該電路基 板P2的下面的對應電路部（沒有圖示）抵接，藉由讓第二 連接部22及彎曲部23的彈性腕部23B朝下方彈性移位，讓 該第二連接部22與該對應電路部彈性接觸。 在本實施方式，第二連接部22，在端子相對向方向朝 殼體1 〇的中央部側彎曲，所以與在端子相對向方向，朝向 離開殼體1 0的中央部的方向彎曲來形成第二連接部的情況 相比，從彈性腕部23B涵蓋到第二連接部22的可彈性移位 的部分的長度變大。於是，藉此讓第二連接部22的彈性移 位量變大，所以能在充分的彈性移位量的基礎下，使該第 二連接部22具有很大接觸壓力地與其他電路基板P2的對應 電路部接觸。 第一連接部21與電路基板P1的對應電路部焊接的連接 器1，以第二連接部22與其他的電路基板P2的對應電路部 彈性接觸，藉此將該電路基板P1與其他的電路基板P2電連 接。 在本實施方式，藉由於殼體10的兩側面處排列的複數 對的端子20的側面相對向部24’夾持著該殼體10’所以在 將連接器1安裝於電路基板P1上之後’即使在端子相對向 方向受到不經意的外力，也能將該殼體10的位置維持在固 定狀態。而在端子相對向方向’能防止該殼體10從正規位 置偏離。 在本實施方式，側面相對向部24與殼體10的溝底面13 -14- 201131899 抵接而夾持該殻體1 〇的是該側面相對向部24的靠近下端的 位置的部分，也就是焊接固定於電路基板Ρ 1的第一連接部 2 1的附近位置的部分，與該側面相對向部2 4夾持殼體1 0的 是該側面相對向部24的靠近上端的位置的部分的情況相比 較，殼體10的保持力變得較大，而能確實地保持。 在本實施方式，雖然針對殼體的互相相對向的側面對 於電路基板作成直角的情況來說明，而殼體的形狀並不限 於此，例如，殼體的兩側面傾斜成隨著朝向上方則互相接 近也可以。在該情況，具有相對於電路基板朝直角延伸的 形狀的側面相對向部的端子，安裝於殼體的兩側面。藉由 安裝這樣形狀的端子，則該端子的側面相對向部，在靠近 其下端的位置具有彈性壓力地抵接於殻體的兩側面，夾持 該殼體。 在本實施方式，端子的側面相對向部作成直線狀，延 伸成隨著朝向下方越接近殼體的側面，而端子的形狀並不 限於此，例如，側面相對向部相對於電路基板直角地延伸 ，並且該側面相對向部的靠近下端的位置的一部分朝向殼 體的側面凸狀彎曲而形成，該凸狀彎曲部分具有彈性壓力 地與殻體的側面抵接，而夾持殼體。 在本實施方式，排列於殼體的兩側面的端子，在端子 排列方向互相在相同位置被保持，而也可取代該方式，將 排列於各側面的端子在端子排列方向互相錯開，在作成所 謂交錯狀的位置加以保持。 在本實施方式，排列於殼體的兩側面的端子的數量是 -15- 201131899 相同數量，而也可取代該方式，在各側面排列互相不同數 量的端子也可以。 【圖式簡單說明】 第1圖是顯示實施方式的電連接器的立體圖。 第2圖是第1圖的電連接器的II 一 II剖面圖。 第3圖是顯示第1圖的電連接器的端子的立體圖。 【主要元件符號說明】 1 :連接益 10 :殼體 13 :溝底面（側面） 1 5 :沒入部（凹部） 1 6 :缺口部 20 :端子 2 1 :第一連接部 22 :第二連接部 2 3 A :被保持部 24 :側面相對向部 -16-201131899 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to an electrical connector for a circuit board. [Prior Art] As an electrical connector, an electrical connector of Patent Document 1 is known. Patent Document 1 discloses a housing having a substantially rectangular parallelepiped shape and an electrical connector in which a plurality of terminals are arranged on both side faces of the housing at right angles to the circuit board. The terminal of the electrical connector includes a main body piece housed in a housing portion as a recess formed in a side surface of the housing, a fixed terminal piece extending upward from the upper end of the main body piece and connected to the circuit board, and a fixed terminal piece. The lower end of the main body piece extends, and contacts the terminal piece which is convexly curved downward and elastically contacts the other circuit board. The fixed terminal piece has an upper half portion and a lower half portion, and the upper half portion is inserted into a terminal insertion hole to be described later of the circuit board, and the lower half portion extends along the side surface with a predetermined gap therebetween. The circuit board to which the fixed terminal piece is fixed is formed with a terminal insertion hole for inserting the upper half of the fixed terminal piece. The pair of terminals held by the housing accommodating portion facing each other with respect to each other, the distance between the fixed terminal pieces in the free state is narrower than the interval between the terminal insertion holes. Therefore, when the electrical connector is mounted on the circuit board, the pair of fixed terminal pieces are elastically deformed and separated from each other to widen the interval, and are inserted into the corresponding terminal insertion holes. As a result, the interval between the lower half of the fixed terminal piece and the side surface of the casing is widened. The fixed terminal piece is fixed to the circuit board by soldering the upper surface of the circuit board to -5 - 201131899. In the above Patent Document 1, since the fixed terminal piece is fixed with sufficient strength by solder mounting, a holding fitting for fixing the fixing of the electrical connector or the like is not required. [Prior Art] [Patent Document 1] [Patent Document 1] Japanese Laid-Open Patent Publication No. 2002-15793 [Problem to be Solved by the Invention] However, in the electrical connector of Patent Document 1, before being mounted on a circuit board, A gap is formed between the lower half of the fixed terminal piece and the side surface of the casing, covering the entire area of the lower half. When the electrical connector is mounted on the circuit board, the terminal insertion hole of the circuit board affixes the terminal piece to a force in a direction away from the side surface of the casing. As a result of the elastic deformation of the fixed terminal piece, the gap is further improved. width. That is to say, a gap is often formed between the lower half of the fixed terminal piece and the side surface of the casing, so that the casing may deviate from the normal position in the range of the gap due to an unintended external force. In view of such a situation, the present invention is to provide an electrical connector for a circuit board which is surely prevented from being displaced from a normal position by fixing the position of the casing. -6 · 201131899 [Means for Solving the Problem] The electrical connector for a circuit board according to the present invention is an electrical connector mounted on a circuit board, and includes two housings and a housing facing each other. The side faces are respectively arranged to form a plurality of terminals of the held portion held by the casing; the terminal has, in addition to the held portion, an end portion formed on the circuit board side, and the circuit substrate a first connection portion connected, an end portion formed on the opposite side of the circuit board side, a second connection portion connected to the other circuit substrate, and the side surface between the first connection portion and the second connection portion The extended side faces are opposite portions. In the electric connector for a circuit board, in the side surface facing portion of the terminal, a gap is provided between the side surface facing portion and the second connecting portion, and a position close to the first connecting portion is provided. The housing is abutted against the side surface by elastic pressure, and the side surface facing portion of the terminal abutting on one of the side surfaces and the side surface facing portion of the terminal abutting the other side surface are sandwiched between the housings. The side opposing portions of the terminals arranged at both side faces of the housing abut against the sides of the respective opposing housings with elastic pressure, and the housing is held thereby fixing the position of the housing. The side opposing portion abuts against the side surface of the housing in a position fixed to the vicinity of the first connecting portion of the circuit board, so that the holding force of the housing is increased by holding the housing at the position. Become sure. It is preferable that a side surface of the casing is formed with a notch portion having a gap formed between the first connection portion and the first connection portion. When a notch portion having a gap between the first connection portion and the first connection portion of the terminal is formed on the side surface of the casing, when the first connection portion is soldered to the corresponding circuit portion of the circuit board, the solder also flows in. Into this notch, a large solder joint can be formed here. Thus, the terminal or even the connector can be more firmly fixed to the circuit substrate. It is preferable that a side surface of the casing is formed with a concave portion that opens in a direction in which a part of the longitudinal direction of the side surface of the terminal facing portion faces. By forming the concave portion on the side surface of the casing, it is assumed that even if the solder and the flux are between the side surface facing portion of the terminal and the side surface of the casing, the side surface is opposed to the portion at the position of the concave portion due to the increase in the capillary phenomenon. The spacing from the sides is still very large and wide, so solder and flux do not rise from the position of the recess. Therefore, since the solder and the solder do not reach the second connection portion, the good connection state of the second connection portion to the other circuit substrate can be ensured. [Effect of the Invention] As described above, according to the present invention, the side surface facing portion of the terminal has elastic pressure and abuts against both side surfaces of the casing, and the side surface is opposed to the housing portion, so that the casing is subjected to an inadvertent external force. It also prevents the housing from deviating from the normal position. The side facing portion is in contact with the side surface of the casing at a position adjacent to the first connecting portion of the circuit board and is clamped to the casing. Therefore, the holding force of the casing is increased to keep the holding. indeed. [Embodiment] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Fig. 1 is a perspective view showing the electrical connector of the embodiment. Fig. 2 -8 - 201131899 is a cross-sectional view of the electrical connector of Fig. 1 showing the cross section of the terminal electrical connector. The electrical connector 1 of the present embodiment (the "connector 1") is mounted on a circuit board and is in contact with other circuit boards from the other, and is used to connect the electrical connectors of the two circuit boards (refer to FIG. 2). ). The connector 1 has a casing 10 having a substantially rectangular parallelepiped shape, which is formed at right angles to the surface of the circuit board, and the two side faces facing each other are arranged at equal intervals, and a plurality of the casings 1 are held later. Terminal 20. Arranged on the two side faces, as shown in Fig. 1, the pair of terminals are protected at the same position in the terminal arrangement direction, and the pair of terminals are opposed to each other. Hereinafter, the direction in which the terminals on the side faces of the casing face each other (the left and right sides of the second figure "the direction in which the terminals face each other". The ends of the two side faces of the casing 1 , in the terminal arrangement direction are as shown in Figs. 1 and 2 As shown in the figure, the upper portion is immersed in a shape in which the terminal is bent in a square shape, and the immersed portion is formed by accommodating the rear curved portion 23 to hold the holding groove portion 2 of the terminal 20, the holding groove portion In the vicinity of the center portion of the terminal in the direction in which the terminals are opposed to each other, in the middle portion of the both side faces in the vertical direction, a pair of two extending in the vertical direction of each terminal position in the terminal arrangement direction is formed. The ridges 1 2 are plural pairs. The ridges 1 2 and the casings located between the two ridges 1 2 form a groove, the function of which is used to: position This is simply referred to as a sub-position in which the electrical connection is provided above and the terminal 20 held by the portion of the casing 10 is held, and the sub-position is referred to as a sub-position, and the terminal 2 0 1 1 is formed. As shown in the figure to the housing #1, the opposite side of the two sides of the opposite side of the pair of 1-10 - 201131899 20 is accommodated in the side of the opposing portion of the receiving groove portion 1 4 ° that is, The side surface ' of the casing 10 between the pair of two rib portions 1 2 constitutes the bottom surface of the accommodating groove portion 14. Hereinafter, the side surface is referred to as a "ditch bottom surface 1 3". As shown in FIG. 2, the longitudinal direction of the side surface of the groove bottom surface 13 is formed in the longitudinal direction of the side surface of the groove bottom surface 13 (the upper and lower sides) The immersed portion 15 that is partially open in the direction of the immersed portion 15 is immersed in the vicinity of the central portion of the connector 1 in the direction in which the terminal is opposed to each of the accommodating groove portions 14 on the both side faces of the casing 10; The lower position 'that is, the lower end side portion, as shown in FIG. 2, is formed with a notch portion 16 that is not immersed in the center portion side of the casing 1 较 in the opposing direction of the connector. . As shown in Fig. 2, the notch portion 16 is opened downward. Fig. 3 is a perspective view showing a state in which a pair of the terminals 20 of the plurality of pairs of the connector 1 of Fig. 1 are taken out from the casing. Hereinafter, the terminal 20 will be described with reference to FIGS. 1 , 2 , and 3 . The terminal 20 is formed by bending a strip obtained by punching a metal plate in the thickness direction. The terminal 20 has a first connecting portion 21 formed at a lower end portion and connected to the circuit board P1, a second connecting portion 22 formed at an upper end portion and connected to the other circuit board P2, and extending from the second connecting portion 22 The horizontal U-shaped bent portion 23 housed in the holding groove portion 11 of the casing 10 and the linear portion extending along the groove bottom surface 13 of the casing 10 to connect the curved portion 23 and the first connecting portion 21 The side faces are opposite portions 24. As shown in Fig. 2, the curved portion 23 is formed in a substantially U-shaped shape, and is formed by two wrist portions extending in the vertical direction and extending in the direction of the terminal (lateral direction) - 201131899. The connecting portion connecting the ends of the two wrist portions to each other is formed. The lower arm portion 'located on the lower side of the two wrist portions' functions as a held portion 23A held by the casing 1A. As shown in Fig. 3, 'the two edge portions of the held portion 2 3 A' are formed with a plurality of held projections 23 A - 1 ' protruding in the width direction of the held portion 2 3 A by letting The held projection 23A-1 bites into the opposite inner wall surface ' of the holding groove portion I1 of the casing 1〇 to hold the held portion 2 3 A. The portion of the upper wrist portion and the connecting portion of the upper side of the two wrist portions functions as: when the other circuit substrate P2 is in contact with the second connecting portion 22, the second connecting portion 22 can be elastically moved. The flexible elastic wrist 23B of the position. As shown in Fig. 2, the elastic arm portion 23B'' is bent obliquely upward and protrudes upward from the upper wall of the casing 1 to move toward the second connecting portion 22. The side facing portion 24 is housed in the housing groove portion 14 of the casing 1'' and extends downward from the end portion of the held portion 23A of the curved portion 23 along the groove bottom surface 13 of the casing 1A. The side opposing portion 24, as shown in Fig. 2, is a portion having a gap between the portion near the upper end and the groove bottom surface 13 and close to the lower end, specifically 'in the lower portion 1 The portion at the lower position of 5 is elastically pressed to abut against the groove bottom surface 13. That is, the side opposing portion 24 gradually faces the groove bottom surface 13 as it faces downward, and the portion near the lower end is in contact with each other' in other words, extending to the side opposing portion 24 and the groove bottom surface 13 The gap is gradually narrower. As shown in Fig. 2, the first connecting portion 21 is bent at a substantially right angle from the lower end portion of the side surface facing portion 24 at a position substantially the same as the bottom surface of the casing 1 in the vertical direction, and is away from the casing 1 The direction extends. The first connecting portion -11 - 201131899 2 1 is solderable to the corresponding circuit portion (not shown) of the circuit board P 1 . The second connecting portion 22 extends from the elastic arm portion 23B of the curved portion 23, and is bent at a position higher than the upper surface of the casing 10 so as to be wound toward the central portion side of the casing 1 in the direction in which the terminals face each other. As shown in FIG. 2, the front end of the second connecting portion 22 is wound downward. The second connecting portion 22 can be formed by the elastic arm portion 2 3 B of the curved portion 23 and the second connecting portion 2 2 . The deflection is elastically displaced. Next, the assembly of the connector 1 will be described. The connector 1 is press-fitted into the groove portion 1 1 of both sides of the casing 10 from the side of the convex curved portion, and is assembled by attaching the terminal 20. Specifically, the held projection 23A-1 of the held portion 23A of the curved portion 23 is bitten into the inner wall surface of the holding groove portion 11 by the press-fitting of the curved portion 23, and the terminal 20 is held in the casing 10 . In a state where the terminal 20 is attached to the casing 10, the side surface facing portion 24 is housed in the housing groove portion 14. The side opposing portion 24 extends so as to gradually approach the groove bottom surface 13 toward the lower side, and abuts against the groove bottom surface 13 at a position close to the lower end of the side surface facing portion 24. As a result, the side opposing portions 24 of the terminals 20 respectively mounted at both side faces of the casing 10 are elastically abutted against the two groove bottom faces 13 of the casing, thereby allowing the side faces of the plurality of pairs of terminals 20 to face each other. The portion 24 holds the housing 10 on both sides. The assembly of the connector 1 is completed. In the present embodiment, the connector 1 is formed with a notch portion 16' at a position below each of the housing groove portions 壳体 of the casing 10. As shown in Fig. 2, the side surface faces the lower end side portion of the -12-201131899 portion 24 and A connecting portion 2 1 is spaced apart from the casing 1 在 in a direction in which the terminals are opposed to each other. Next, the connection between the two circuit boards by the connector 1 will be described. First, as shown in FIG. 2, the connector 1 is placed on the circuit board Ρ1, and the first connection portion 21 is soldered to the corresponding circuit portion (not shown) of the circuit board Ρ1, and is mounted on the circuit board Ρ1. Fixing as described above, in the present embodiment, a gap is formed between the lower end side portion of the side surface facing portion 24 and the side surface of the first connecting portion 21 and the casing 10 by the presence of the notch portion 16. Then, when the first connecting portion 21 is soldered to the corresponding circuit portion, the solder adheres to the bent portion from the side surface facing portion 24 of the terminal 20 toward the first connecting portion 21 to form a solder bead. At this time, in the above-mentioned notch portion 16, that is, a sufficient space is formed between the lower end side portion of the side surface opposing portion 24 and the side surface of the casing 1 ,, a large solder joint can be formed here. As a result, the terminal 20 and even the connector 1 can be firmly fixed to the circuit board Ρ 1. In the present embodiment, the recessed portion 15' is formed in the groove bottom surface 3 of the casing 10 at the position of the recessed portion 15, and the distance between the side surface facing portion 24 of the terminal 20 and the groove bottom surface 13 is large. Therefore, even if the solder and the flux are raised by the capillary phenomenon between the side facing portion 24 of the terminal 2 and the groove bottom surface 1 3, the solder and the solder do not rise from the position of the recessed portion 15 described above. As a result, the solder and the solder do not reach the second connecting portion 2 2 ', so that the second connecting portion 22 can be surely connected to the other circuit board 2 . Next, as shown by the arrow in Fig. 2, the other circuit board Ρ2 is brought over the connector I from -13 to 201131899, and is set at a predetermined position. When the other circuit board P2 is set at a predetermined position, the second connecting portion 22 abuts against a corresponding circuit portion (not shown) provided on the lower surface of the circuit board P2, by allowing the second connecting portion 22 and the bent portion The elastic arm portion 23B of the 23 is elastically displaced downward, and the second connecting portion 22 is elastically brought into contact with the corresponding circuit portion. In the second embodiment, the second connecting portion 22 is bent toward the center portion of the casing 1 in the direction in which the terminal faces the direction of the terminal, so that the second connecting portion 22 is bent in a direction away from the central portion of the casing 10 in the direction in which the terminal faces. In the case of the two connecting portions, the length from the elastic wrist portion 23B to the elastically displaceable portion of the second connecting portion 22 becomes larger. Therefore, the amount of elastic displacement of the second connecting portion 22 is increased, so that the second connecting portion 22 can have a large contact pressure with the other circuit board P2 with a large amount of elastic displacement. The circuit part is in contact. The connector 1 in which the first connecting portion 21 is soldered to the corresponding circuit portion of the circuit board P1 is elastically brought into contact with the corresponding circuit portion of the other circuit board P2 by the second connecting portion 22, whereby the circuit board P1 and other circuit boards are used. P2 is electrically connected. In the present embodiment, since the side surface of the plurality of terminals 20 arranged at both side faces of the casing 10 is sandwiched by the casing 10', the connector 1 is mounted on the circuit board P1. The position of the casing 10 can be maintained in a fixed state even if an external force is inadvertently applied to the opposite direction of the terminal. In the opposite direction of the terminal, the housing 10 can be prevented from deviating from the normal position. In the present embodiment, the side opposing portion 24 abuts against the groove bottom surface 13-14-201131899 of the casing 10, and the portion of the side facing portion 24 close to the lower end is clamped, that is, A portion of the portion of the circuit board Ρ 1 that is fixed to the vicinity of the first connecting portion 21 is soldered to the portion of the side surface facing portion 24 that is closer to the upper end of the side facing portion 24 In comparison with the situation, the holding force of the casing 10 becomes larger and can be surely maintained. In the present embodiment, the case where the mutually opposing side faces of the casing are formed at right angles to the circuit board is described, and the shape of the casing is not limited thereto. For example, both side faces of the casing are inclined so as to face each other as they face upward. It is also close. In this case, the terminals having the side facing portions extending in a right angle with respect to the circuit board are attached to both side faces of the casing. By attaching the terminal of such a shape, the side facing portion of the terminal abuts against both side faces of the casing with elastic pressure at a position close to the lower end thereof, and the casing is sandwiched. In the present embodiment, the side surface of the terminal is linearly formed so as to extend closer to the side surface of the casing as it goes downward, and the shape of the terminal is not limited thereto. For example, the side opposing portion extends at right angles to the circuit board. And a part of the position of the side opposing portion near the lower end is formed to be convexly curved toward the side surface of the casing, and the convex curved portion abuts against the side surface of the casing with elastic pressure to sandwich the casing. In the present embodiment, the terminals arranged on both side faces of the casing are held at the same position in the terminal arrangement direction. Instead of this, the terminals arranged on the respective side faces may be shifted from each other in the terminal arrangement direction. The staggered position is maintained. In the present embodiment, the number of terminals arranged on both side faces of the casing is the same as -15 - 201131899, and instead of this, a plurality of terminals different from each other may be arranged on each side. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing an electrical connector of an embodiment. Fig. 2 is a sectional view taken along line II-II of the electrical connector of Fig. 1. Fig. 3 is a perspective view showing the terminal of the electrical connector of Fig. 1. [Description of main component symbols] 1 : Connection benefit 10 : Housing 13 : Groove bottom surface (side surface) 1 5 : No-entry portion (recessed portion) 1 6 : Notch portion 20 : Terminal 2 1 : First connection portion 22 : Second connection portion 2 3 A : held portion 24 : side opposite portion - 16 -