200908468 九、發明說明 【發明所屬之技術領域】 本發明是關於連接構件的終端連接部及電氣機器的連 接部，尤其第一是關於，能形成不需要設置半導電橡膠的 簡化的應力錐體的連接構件的終端連接部，第二是關於， 能夠防止用來將連接構件的端部予以收容的襯套損壞的電 氣機器的連接部。 【先前技術】 以往，因爲受變電設備工程的省力化及工時縮短化的 觀點，而使用密封配電盤型的氣體絕緣開閉裝置。在該氣 體絕緣開閉裝置，需要將密封配電盤之間電連接，而連接 構件，是使用本案申請人之前開發的配電盤間聯絡構件（ 例如參考專利文獻1 )。 在該配電盤間聯絡構件，作爲於配電盤間聯絡用絕緣 母線的外周所安裝的絕緣成形體，例如在圓筒狀的絕緣成 形體的除了兩端部的部分的外周，設置半導電塗料的塗敷 層，藉由將具有與絕緣成形體的外徑同直徑的圓筒部的應 力錐體一體地設置在絕緣成型體的兩端部，則可讓絕緣成 形體（連接器）全體小直徑化。 藉由使用這種絕緣成形體（連接器），即使是安裝空 間狹窄的機器外壁等，也能容易地安裝配電盤間聯絡用絕 緣母線。 可是’在這種配電盤間聯絡構件，必須在配電盤間聯 -5- 200908468 絡用絕緣母線的外周安裝：具有由半導電橡膠所構成的應 力錐體的絕緣成形體（連接器），對於該絕緣成形體（連 接器）的製造，也就是內部半導電層或外部半導電層的製 造’缺點是除了時間較長，且成本也比較高。 另一方面，在這種構造的配電盤間聯絡構件，連接器 內部的連接導體作成凹狀，藉由與作成凸狀的配電盤間聯 絡用絕緣母線側導體或機器側襯套側導體嵌合，而讓兩者 電連接。 在該情況，在將連接器內部的連接導體作成凸狀的情 況’有時需要將配電盤間聯絡用絕緣母線側導體或機器側 襯套側導體作成凹狀以進行嵌合，管導體適合作爲這種凹 狀導體。 可是’在將管導體用作爲，配電盤間聯絡用絕緣母線 側導體或機器側襯套側導體時，由於對於連接器內部的連 接導體的連接成爲對接構造，所以藉由朝向管導體的通電 所造成的熱能，該管導體會朝軸方向延伸，應力會施加在 對接位置，進而可能會讓絕緣母線或機器側襯套損壞。 [專利文獻1] 日本特開2002-101544號公報 【發明內容】 [發明欲解決的課題] 本發明爲了解決上述問題，第一要提供一種連接構件 的終端連接部’取代具有以半導電橡膠所構成的應力錐體 -6 - 200908468 的絕緣成形體（連接器）’在具有橡膠類彈性的絕緣體的 外周，涵蓋預定區間設置利用塗敷半導電塗料所構成的外 部半導電層，且藉由在該外部半導電層的周邊配置預定的 電場緩和層’而能防止：構成連接構件的遮蔽層（外部半 導電層）的前端部的電場集中的情形；第二要提供一種電 氣機器的連接部’藉由在襯套的內壁與連接構件的端部之 間，設置用來吸收連接構件的伸出情形的空間，而能防止 :用來收容連接構件的端部的襯套損壞。 [用以解決課題的手段] 本發明的第一型式的連接構件的終端連接部，具備有 :在後端部具有連接構件的端部的收容口的絕緣性的襯套 、以及可自由裝卸地與收容口連接的連接構件的端部；連 接構件，具備有：設置在導體的外周且具有橡膠類彈性的 絕緣體、及涵蓋於收容口的入口的部分而設置於絕緣體的 外周的外部半導電層；在襯套的後端部側，具備有環狀的 電場緩和層，電場緩和層的前端部側，較外部半導電層的 前端部更朝襯套的前端部延伸，以電場緩和層將外部半導 電層的前端部的周邊予以覆蓋。 本發明的第二型式的連接構件的終端連接部，具備有 =在後端部具有連接構件的端部的收容口的絕緣性的襯套 、以及可自由裝卸地與收容口連接的連接構件的端部；連 接構件，具備有：設置在導體的外周且具有橡膠類彈性的 絕緣體、及涵蓋於收容口的入口的部分而設置於絕緣體的 200908468 外周的外部半導電層；在襯套的後端部側，具備有環狀的 電場緩和層，電場緩和層的前端部側’較外部半導電層的 前端部更朝襯套的前端部延伸，以電場緩和層將外部半導 電層的前端部的周邊予以覆蓋，外部半導電層’以半導電 塗料的塗敷層所形成。 本發明的第三型式的連接構件的終端連接部’具備有 :在後端部具有連接構件的端部的收容口的絕緣性的襯套 、以及可自由裝卸地與收容口連接的連接構件的端部；連 接構件，具備有：設置在導體的外周且具有橡膠類彈性的 絕緣體、及涵蓋於收容口的入口的部分而設置於絕緣體的 外周的外部半導電層；在襯套的後端部側，具備有環狀的 電場緩和層，電場緩和層的前端部側’較外部半導電層的 前端部更朝襯套的前端部延伸’以電場緩和層將外部半導 電層的前端部的周邊予以覆蓋’襯套’其前端部位於機器 盒體內，其後端部氣密性地固定於在機器盒體上所設的開 口部的周緣部。 本發明的第四型式的連接構件的終端連接部，具備有 :在後端部具有連接構件的端部的收容口的絕緣性的襯套 、以及可自由裝卸地與收容口連接的連接構件的端部；連 接構件，具備有：設置在導體的外周且具有橡膠類彈性的 絕緣體、及涵蓋於收容口的入口的部分而設置於絕緣體的 外周的外部半導電層；在襯套的後端部側，具備有環狀的 電場緩和層，電場緩和層的前端部側’較外部半導電層的 前端部更朝襯套的前端部延伸’以電場緩和層將外部半導 -8 - 200908468 電層的前端部的周邊予以覆蓋，外部半導電層是以半導電 塗料的塗敷層所形成，襯套，其前端部位於機器盒體內， 其後端部氣密性地固定於在機器盒體上所設的開口部的周 緣部。 本發明的第五型式，是針對第一型式〜第四型式的任 一型式的連接構件的終端連接部，連接構件的端部，是具 備有：於襯套的收容口所安裝的公型的插入部、以及與插 入部同心狀地連設在插入部的後端部側’且配置在機器盒 體的開口部內的大直徑部；安裝於連接構件的固定金屬扣 件，是卡止於大直徑部而固定在機器盒體。 本發明的第六型式，是針對第一型式〜第四型式的任 一型式的連接構件的終端連接部，連接構件的端部’是具 備有：於襯套的收容口所安裝的公型的插入部、以及與插 入部同心狀地連設在插入部的後端部側’且配置在機器盒 體的開口部內的大直徑部；安裝於連接構件的固定金屬扣 件’是卡止於大直徑部而固定在機器盒體’於大直徑部的 外周所設的外部半導電層’是電連接於機器盒體。 本發明的第七型式的電氣機器的連接部’是具備有： 分離配置的一對電氣機器、在用來收容各電氣機器的機器 盒體的內壁’分別氣密性地所固定的絕緣性的襯套、以及 在襯套的後端部所設的收容口 ’可自由裝卸地連接其本身 的端部的連接構件；在襯套的內壁與連接構件的端部之間 ，設置有：用來將構成連接構件的導體的伸出情形予以吸 收的空間。 -9- 200908468 本發明的第八型式的電氣機器的連接部’是具備有： 分離配置的一對電氣機器、在用來收容各電氣機器的機器 盒體的內壁，分別氣密性地所固定的絕緣性的襯套、以及 在襯套的後端部所設的收容口 ’可自由裝卸地連接其本身 的端部的連接構件；在裸套的內壁與連接構件的端部之間 ，設置有：用來將構成連接構件的導體的伸出情形予以吸 收的空間，在襯套的收容口的內壁’設置有：可僅收容導 體的端部的凹陷部。 本發明的第九型式的電氣機器的連接部’是具備有： 分離配置的一對電氣機器、在用來收容各電氣機器的機器 盒體的內壁，分別氣密性地所固定的絕緣性的襯套、以及 在襯套的後端部所設的收容口 ’可自由裝卸地連接其本身 的端部的連接構件；在襯套的內壁與連接構件的端部之間 ，設置有：用來將構成連接構件的導體的伸出情形予以吸 收的空間，在襯套的前端部設置內部導體’導體是相對於 內部導體電連接且可滑動地連接。 本發明的第十型式的電氣機器的連接部’是具備有： 分離配置的一對電氣機器、在用來收容各電氣機器的機器 盒體的內壁，分別氣密性地所固定的絕緣性的襯套、以及 在襯套的後端部所設的收容口 ’可自由裝卸地連接其本身 的端部的連接構件；在襯套的內壁與連接構件的端部之間 ，設置有：用來將構成連接構件的導體的伸出情形予以吸 收的空間，在親套的收容口的內壁’設置有：可僅收容導 體的端部的凹陷部，在襯套的前端部設置內部導體，導體 -10- 200908468 是相對於內部導體電連接且可滑動地連接。 本發明的第^—型式’是針對第九型式〜第十型式的 任一型式的電氣機器的連接部’與內部導體連接的導體是 由管導體所構成。 [發明效果] 藉由本發明的第一型式〜第六型式的連接構件的終端 連接部，具有如下的效果。 第一，取代具有以半導電橡膠所構成的應力錐體的絕 緣成形體（連接器），在具有橡膠類彈性的絕緣體的外周 ，涵蓋預定區間設置以塗敷半導電塗料所構成的外部半導 電層，且在該外部半導電層的周邊配置預定的電場緩和層 ，具體來說，藉由配置預定的金屬環、或日本特開2005-1 922 8 3號公報（參考第2圖）所示的錐形口，而能防止： 在構成連接構件的遮蔽層（外部半導電層）的前端部的電 場集中情形。 第二，藉由以金屬環或錐形口的前端部配置成將作爲 連接構件的外部半導電層的前端部的周邊予以覆蓋，則能 形成：不具有以半導電橡膠所構成的電場緩和部的應力錐 體。於是，藉由本發明，不需要在應力錐體設置半導電橡 膠，進而能省略內部半導電層或外部半導電層的製造步驟 ’能形成非常廉價的電氣機器的連接部。並且在具有橡膠 類彈性的絕緣體，不需要緩和電場用的錐形口構造，讓模 具成爲簡易的構造，也不需要塗敷錐形口的凹部這樣複雜 -11 - 200908468 的作業。 第三，能夠將在工廠預先製作的連接構件的構成構件 (導體、絕緣體）出貨，藉由在現場將連接構件的組成構 件組裝，則能簡化組裝動作。 第四，藉由使用固定金屬扣件，該固定金屬扣件配設 於：於襯套的後端部側所埋設的金屬環及連接構件，而能 將連接構件連接於電氣機器的通電構件，並且能將連接構 件可自由裝卸地固定於機器盒體。 藉由第七型式〜第十一型式的電氣機器的連接部，在 襯套的收容口的內壁與連接構件的端部之間，設置有用來 將連接構件的伸出情形予以吸收的空間（導體伸出吸收口 )，所以藉由對於導體通電，則即使該導體朝軸方向延伸 也能以該空間（導體伸出吸收口）加以吸收，進而能提供 不會讓襯套損壞的電氣機器的連接部。 [實施方式】 以下，針對適用本發明的連接構件的終端連接部及電 氣機器的連接部的實施方式例子’參考圖面來說明。在以 下的實施例中，分離配置的一對電氣機器的通電構件’分 別晏作成相同構造’所以除了特別指出的情況’針對電氣 機器的通電構件的其中一方（圖中左側的電氣機器的通電 構件）來說明，當指出構成電氣機器的通電構件的襯套、 內部導體及金屬環的「前端部」時，是指該襯套、內部導 體及金屬環的高壓側’在圖中相當於左方向’當指出該襯 -12- 200908468 套、內部導體及金屬環的「後端部」時，是指該攝套、內 部導體及金屬環的低壓側，在圖中相當於右方向， [實施例1] 第1圖是顯示將本發明適用於3 3kV級的氣體絕緣開 閉裝置的電氣機器的連接部的局部剖面圖。 一開始來說明在本發明使用的電氣機器的通電構件。 在第1圖，電氣機器的通電構件1，是具備有：由環 氧樹脂等的硬質的絕緣體所構成的襯套1 1、氣密性而將襯 套1 1的開口部封閉地設置在襯套1 1的前端部的由銅棒等 所構成的內部導體1 2、以及同心狀地埋設在襯套1 1的後 端部側的環狀的金屬環1 3。 襯套1 1，全體呈子彈狀，在其後端部側（與機器盒體 C相對向側）設置有：用來收容後述連接構件2的端部的 收容口 1 4。 收容口 14，具備有：在襯套1 1的後端部側（與機器 盒體C相對向側）也就是在連接構件2的端部的入口所設 的圓形的收容口（以下稱爲「入口」）14a、從入口 14a 側朝向前端部側（機器盒體C的內部空間側）縮徑爲前端 較細狀的圓錐狀的收容口（以下稱爲「錐形孔」）1 4b、 以及在錐形孔1 4 b的內壁1 4 C所設的圓形的凹陷部（以下 稱爲「導體伸出吸收口」）14d ’該入口 14a、錐形孔14b 及導體伸出吸收口 1 4d ’是設置成同心狀且相互連通。 內部導體12’具備有：在襯套11的前端部側的內周 -13- 200908468 埋設成將襯套π的開口部封閉的圓柱狀的大直徑部（以 下稱作「大直徑內部導體」）12a、與大直徑內部導體12a 同心狀地連接設置在大直徑內部導體1 2 a的後端部側’與 後述作爲連接構件2的導體電連接的小直徑部（以下稱爲 「小直徑內部導體」）1 2b、以及在大直徑內部導體1 2a 與小直徑內部導體12b的連接設置部分的外周連接設置成 朝直徑方向外側延伸的環狀的凸緣構件1 2c。在小直徑內 部導體12b的外周設置有環狀的凹溝（沒有圖示），在該 凹溝沿著其圓周方向嵌裝著帶狀的導體接頭（多向接頭） 1 2 d。這裡的環狀的凹溝是設置在作爲後述的連接構件2 的導體2 1的內周，沿著圓周方向將導體接頭（多向接頭 )嵌裝在該凹溝也可以。 凸緣構件12c，其全體埋設在襯套11的頂部，藉此配 設成相對於後述連接構件2的插入方向垂直相交。而凸緣 構件12c的外周緣部藉由實施導圓角加工而成爲圓角構造 ，藉由作成這種形狀’如後述襯套11的應力會集中在具 圓角構造的導圓角加工部分。 金屬環1 3，埋設成讓其後端面（與機器盒體C相對 向面）與襯套11的後端面兩面相齊’在該金屬環13的後 端部側，沿著圓周方向分離設置有：用來將後述第一、第 二鎖裝螺栓b 1、B 2的前端部予以鎖裝的複數個螺栓孔 1 3 a。在金屬環1 3的前端部側實施導圓角加工讓全體具有 圓角構造。這裡實施過導圓角加工的金屬環13的前端部 ，朝向較後述外部半導電層24的前端部更稍前端部側延 -14- 200908468 伸，藉此以該金屬環13來覆蓋外部半導電層24的前端部 周邊。藉此防止外部半導電層24的前端部附近電場集中 的情形。 在本實施例，電氣機器的通電構件1，藉由在內部導 體1 2的外周注模環氧樹脂所形成。 藉由該構造的電氣機器的通電構件1，具有如下的效 果。 第一，藉由讓作爲襯套11的環氧樹脂的應力集中在 ，與內部導體1 2的外周連接的凸緣構件1 2 c的外周緣部 ，也就是曲率半徑較小的導圓角狀的凸緣構件1 2 c的外周 緣部，讓襯套1 1與作爲內部導體1 2的凸緣構件1 2c的外 周緣部的界面更緊貼，則即使是將襯套1 1的軸方向的長 度縮短的縮小型的電氣機器的通電構件1，於機器盒體C 內所充塡的SF6氣體等的絕緣氣體也不可能從機器盒體C 的內部漏出到機器盒體C的外部。 第二，作爲內部導體1 2的凸緣構件12c是埋設在相 對於襯套1 1的直徑方向外側’所以可以將襯套1 1與內部 導體1 2的界面的距離（氣體洩漏路線的距離）增長，則 即使是縮小型的電氣機器的通電構件1 ’也就是即使是軸 方向長度較短的襯套11 ’也更能防止絕緣氣體漏出。 第三，藉由將凸緣構件12c的外周緣部作成導圓角形 狀，能夠防止應力錐體的前端部的空氣、導體21、絕緣體 2 2的三重接合點（三重接合）的電場集中情形。 第四，作爲內部導體12的凸緣構件12c埋設在相對 -15- 200908468 於襯套11朝直徑方向外側延伸的方向，所以能減輕作爲 襯套11的環氧樹脂的衝擊。也就是說凸緣構件12c的面 相對於內部導體π的軸線垂直相交，或傾斜配置，所以 相對於該凸緣構件1 2c的面，能夠施加當對於連接構件2 的電氣機器的通電構件1組裝時的對於襯套1 1的應力， 進而藉由緩和對於襯套1 1的應力集中情形，而能減輕對 於襯套1 1的衝擊。 接著，針對使用了該構造的電氣機器的通電構件1的 連接構件的終端連接部及電氣機器的連接部來加以說明。 在第1圖及第2圖，本發明的連接構件的終端連接部 及電氣機器的連接部，是具備有：分離配置的一對開閉器 或變壓器等的電氣機器（沒有圖示）、在氣密性地收容各 電氣機器的機器盒體C的內壁，分別氣密性地所安裝的電 氣機器的通電構件1、可自由裝卸地連接於該電氣機器的 通電構件1之間的連接構件2、以及將該連接構件2可自 由裝卸地固定在機器盒體C的環狀的固定金屬扣件3。 首先，在機器盒體C的內壁（側壁）設置有圓形的開 口部C 1，在該開口部C1的周緣部如下述氣密性地固定著 電氣機器的通電構件1。 構成電氣機器的通電構件1的襯套11，其前端部位於 機器盒體C內，後端部配置成與機器盒體C的開口部C1 的周緣部抵接，藉由第一鎖裝螺栓B 1氣密性地加以固定 。而圖號15表示Ο型環。 連接構件2，具備有：由銅管等所構成的導體2 1、設 -16- 200908468 置在導體21的外周而由矽橡膠等所構成的具有橡膠類彈 性的絕緣體22、設置在絕緣體22的內周的內部半導電層 23、以及設置在絕緣體22的外周的外部半導電層24;該 構成構件，如後述是在現場組裝成一體而加以固定。導體 21的內徑，是與作爲內部導體12的小直徑內部導體12b 的外徑約相同直徑，其軸方向長度，與一對襯套1 1的收 容口 1 4的內壁1 4c之間的尺寸相同。 絕緣體22，具備有：其軸方向長度與導體21的軸方 向長度約相同的圓筒狀的絕緣體主體22a，在其中央部設 置有：於一對機器盒體C之間所配置的小直徑部（以下稱 爲「小直徑絕緣體」）221。在絕緣體主體22a的兩端部 ，設置有：用來於襯套11的收容口 14所安裝的公型的插 入部222，在與機器盒體C的開口部C 1對應的位置所配 設的部分，分別設置有大直徑部（以下稱爲「大直徑絕緣 體」）223。並且，在大直徑絕緣體223與小直徑絕緣體 221的連接部分，設置有階段壁224。在插入部222的外 周設置有：與作爲收容口 14的錐形孔Mb的內周面對應 的錐形部，大直徑絕緣體223的外徑較小直徑絕緣體22 1 的外徑更大直徑，且較機器盒體C的開口部C 1的口徑更 稍大。 內部半導電層23及外部半導電層24是以例如碳類的 半導電塗料的塗敷層所形成。其中內部半導電層23是涵 蓋絕緣體主體22a的內周全長所設置。外部半導電層23 是設置成分別電導通於小直徑絕緣體2 2 1的外周、階段壁 -17- 200908468 224的外表面及大直徑絕緣體223的外周。也就是 該實施例，外部半導電層24變得沒有設置在：與 容口 14的錐形孔14b的內周面抵接的插入部222 面。 固定金屬扣件3，具備有：具有與小直徑絕緣 的外徑約相同直徑或稍大直徑的內徑的環狀的第一 屬扣件主體3 1、以及具有與大直徑絕緣體223的外 同直徑的內徑的環狀的第二固定金屬扣件主體32; 該第一、第二固定金屬扣件主體31' 32連接設置 狀，而在其內周側形成與階段壁224卡合的卡止部 該固定金屬扣件3 3在與上述螺栓孔1 3 a對應的位 圓周方向等距地設置有：用來讓第二鎖裝螺栓B2 穿孔34(參考第2圖）。 該構造的連接構件2，除了如下述作成一體化 是可自由裝卸地連接於電氣機器的通電構件1。 首先，在將導體21插入到絕緣體22的內部之 該絕緣體22壓潰，以該狀態將環狀的固定金屬扣 絕緣體22的其中一方的端部側嵌插到絕緣體22的 藉此，可以使固定金屬扣件3的卡止部3 3卡合到 22的階段壁224。接著，從絕緣體22的其中一方 側將導體21插入到絕緣體22的內部。藉此可以將 22與導體21 —體化。 將以這種方式組裝爲一體而固定的連接構件2 一方的端部（圖中左側的端部）插入到，其中一方 說，在 作爲收 的外表 體 221 固定金 徑約相 藉由將 成同心 33。在 置，在 插穿的 之外， 前，將 :33從 外周。 絕緣體 的端部 絕緣體 的其中 的電氣 -18- 200908468 機器（圖中左側的電氣機器）的構成通電構件1的襯套1 1 的收容口 14，將構成連接構件2的導體21插入到構成內 部導體12的小直徑內部導體12b。藉此，隔介著導體接頭 1 2d而將導體21與內部導體12電連接且可滑動地連接。 接著，將第二鎖裝螺栓B2插入到固定金屬扣件3的 穿孔34，將該鎖裝螺栓B2的前端部轉動旋裝到對應的螺 栓孔13a。藉此，固定金屬扣件3與連接構件2的其中一 方的端部一起朝向機器盒體C側旋進，而作爲絕緣體22 的插入部2 22朝向襯套11的收容口 14按壓。藉由將作爲 絕緣體22的插入部222朝向襯套1 1的收容口 14按壓， 而將作爲絕緣體22的插入部222的錐形部緊壓於襯套1 1 的作爲收容口 1 4的錐形孔1 4 b的內周面，進而能確保襯 套1 1的收容口 14與作爲絕緣體22的插入部222之間的 界面的絕緣性能。而藉由讓固定金屬扣件3的卡止部33 電接觸於絕緣體22的階段壁224，則外部半導電層24隔 介著鎖裝螺栓B2及金屬環13而電連接在作爲對地電位的 機器盒體C。 接著’將另一方的電氣機器（圖中右側的電氣機器） 隔介著腳輪（沒有圖示）等而移動到預定位置，將連接構 件2的另一方端部（圖中右側的端部）與上述同樣地插入 到’構成另一方電氣機器的通電構件1的襯套n的收容 口 14 ’將構成連接構件2的導體21插入連接於內部導體 1 2的小直徑內部導體丨2b，並且將已插入於固定金屬扣件 3的穿孔34的鎖裝螺栓B2朝向機器盒體C旋進。藉此形 -19- 200908468 成了用來連接的一對電氣機器地連接部。 如以上’藉由本發明的連接構件的終端連接部，具有 如下的效果。 第一 ’取代具有以半導電橡膠所構成的應力錐體的絕 緣成形體（連接器），在具有橡膠類彈性的絕緣體的外周 ，涵蓋預定區間設置以塗敷半導電塗料所構成的外部半導 電層24，且在該外部半導電層24的周邊配置預定的電場 緩和層，具體來說’藉由配置預定的金屬環13、或日本特 開2005 — 1 92283號公報（參考第2圖）所示的錐形口， 而能防止：在構成連接構件2的遮蔽層（外部半導電層24 )的前端部的電場集中情形。 第二，藉由以金屬環13或錐形口的前端部配置成將 作爲連接構件2的外部半導電層24的前端部的周邊予以 覆蓋’則能形成：不具有以半導電橡膠所構成的電場緩和 部的應力錐體。於是’藉由本發明，不需要在應力錐體設 置半導電橡膠，進而能省略內部半導電層或外部半導電層 的製造步驟，能形成非常廉價的電氣機器的連接部。並且 在具有橡膠類彈性的絕緣體，不需要設置緩和電場用的錐 形口構造，讓模具成爲簡易的構造，也不需要塗敷錐形口 的凹部這樣複雜的作業。 第三，能夠將在工廠預先製作的連接構件2的構成構 件（導體21、絕緣體22 )出貨，藉由在現場將連接構件2 的組成構件組裝，則能簡化組裝動作。 第四，藉由使用固定金屬扣件3，該固定金屬扣件配 -20- 200908468 設於：於襯套1 1的後端部側所埋設的金屬環1 3及連接構 件2，而能將連接構件2連接於電氣機器的通電構件1 ’ 並且能將連接構件可自由裝卸地固定於機器盒體C。 藉由本發明的電氣機器的連接部，在襯套11的收容 口 14的內壁14c與連接構件2(導體21)的端部之間， 設置有用來將連接構件2的伸出情形予以吸收的空間（導 體伸出吸收口 1 4d )，所以藉由對於導體2 1通電，則即使 該導體2 1朝軸方向延伸也能以該空間（導體伸出吸收口 )加以吸收，進而能提供不會讓襯套1 1損壞的電氣機器 的連接部。 [實施例2] 第3圖是顯示本發明的連接構件的終端連接部的其他 實施例的局部剖面圖。在該圖與第1圖及第2圖共通的部 分，是用相同圖號而省略詳細說明。 在第3圖，在該實施例，取代第1圖及第2圖所示的 連接構件2，連接絕緣栓5。 該絕緣栓5，具備有：由矽橡膠等的橡膠類彈性體所 構成的絕緣栓主體5 1，在該絕緣栓主體5 1的後端部設置 有與絕緣栓主體51爲一體的圓形金屬板52。 絕緣栓主體5 1，在前端部側設置有：與上述作爲絕緣 體22的公型的插入部222同樣的插入部51a，在後端部具 備有：與上述作爲絕緣體22的大直徑絕緣體223同樣的 大直徑絕緣體5 1 b，在插入部5 1 a的前端部中心部設置有 -21 - 200908468 :可將小直徑內部導體1 2 b插入的凹陷部5丨c。而在絕緣 栓主體51的大直徑絕緣體51b的外周與凹陷部51c的外 表面，設置有碳類的半導電塗料的塗敷層51d、51e。 在該實施例，是在絕緣栓5的後端部的外周卡止著固 定金屬扣件3的卡止部3 3，且如上述同樣地將於該固定金 屬扣件3的穿孔34所插通的第二鎖緊螺栓B2的前端部旋 裝在螺栓孔13a’藉由轉動而將絕緣栓5連接於電氣機器 的通電構件1 ’並且能可自由裝卸地固定於機器盒體C。 在該實施例’由於配置了與第一實施例同樣的電氣機 器的通電構件1，所以與第一實施例同樣地，於機器盒體 C內所充塡的絕緣氣體（SF6氣體等）不會從機器盒體C 的內部洩漏到外部，而藉由使用：於襯套1 1的後端部側 所埋設的金屬環1 3及絕緣栓5的後端部所配置的固定金 屬扣件3，則能將絕緣栓5連接於電氣機器的通電構件1 ’並且將其可自由裝卸地固定於機器盒體C。 [產業上的可利用性] 在上述實施例，雖然以圖面所顯示的特定實施方式來 說明本發明，本發明並不限定於該實施方式，只要能達成 本發明的效果，也能作成如下述的構造。 第一，在上述實施例，雖然以金屬環13來防止遮蔽 層（外部半導電層）的端部的電場集中情形，而本發明並 不限於此，例如，取代金屬環1 3而使用錐形口也可以。 第二，在上述連接構件的終端連接部，並不限定連接 -22- 200908468 構件在管狀的導體的外周設置絕緣體，例如也可使用：在 絞合電纜線導體的外周覆蓋架橋聚乙烯樹脂等的電力用電 纜。 第三’作爲連接構件的絕緣體，並不限定爲矽橡膠， 例如也可是乙丙橡膠等的具有橡膠類彈性的絕緣體。 第四，內部導體及作爲連接構件的導體並不限定以銅 形成’例如也可用銅合金製、鋁或鋁合金製來形成。 第五，雖然針對開閉裝置的配電盤間連接來說明，而 本發明並不限於此，例如，也可適用於在直接連結於機器 的電氣機器的通電構件，連接有電力電纜的終端部的所謂 機器直接連結型的終端連接部。 第六，在上述實施例，雖然針對將電氣機器的通電構 件使用爲氣體內襯套的情況來說明，而本發明並不限於此 ，例如也可適用於油內襯套、氣體內襯套或固體絕緣襯套 等。 第七，在上述實施例，雖然針對適用電壓爲3 3kV級 來說明，而本發明並不限於此，也可適用於較33kV更低 的電壓或更高的電壓。 第八，在上述電氣機器的連接部，內部半導電層23 及外部半導電層24，並不限定於塗敷碳類的半導電塗料， 也可以形成半導電橡膠。 【圖式簡單說明】 第1圖是本發明的第一實施例的連接構件的終端連接 -23- 200908468 部及電氣機器的連接部的局部剖面圖。 第2圖是顯示本發明的第一實施例的連接構件的終端 連接部及電氣機器的連接部的組裝情況的示意圖。 第3圖是本發明的第二實施例的連接構件的終端連接 部的局部剖面圖。 【主要元件符號說明】 2 :連接構件 1 1 :襯套 1 2 :內部導體 12c :凸緣構件 13 :金屬環 1 4 :收容口 14d :空間（導體伸出吸收口） 21 :導體 22 :絶緣體 2 3 :內部半導電層 24 :外部半導電層 223 :大直徑部（大直徑絕緣體） C :機器盒體 C 1 :開口部 -24-BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal connecting portion of a connecting member and a connecting portion of an electric machine, and more particularly to a simplified stress cone capable of forming a semiconductive rubber. The terminal connecting portion of the connecting member, and the second is a connecting portion of an electric device capable of preventing damage to the bushing for accommodating the end portion of the connecting member. [Prior Art] In the past, a gas-insulated switchgear of a sealed switchboard type was used because of the labor saving of the substation equipment project and the shortening of the working hours. In the gas insulated switchgear, it is necessary to electrically connect the sealed switchboards, and the connection member is a switchboard communication member developed before the applicant of the present invention (for example, refer to Patent Document 1). In the inter-disc contact member, as an insulating molded body to be mounted on the outer circumference of the insulating bus bar for inter-distribution inter-distribution, for example, a coating of a semiconductive paint is provided on the outer periphery of a portion of the cylindrical insulating molded body except for both end portions. By providing the stress cone having the cylindrical portion having the same diameter as the outer diameter of the insulating molded body integrally at both end portions of the insulating molded body, the insulating molded body (connector) can be made smaller in diameter. By using such an insulating molded body (connector), it is possible to easily mount the insulated bus bar for inter-distribution between the switchboards even if the outer wall of the machine having a narrow space is installed. However, in this type of switchboard contact member, it must be installed in the periphery of the switchboard-5-200908468 with an insulated busbar: an insulating molded body (connector) having a stress cone composed of semiconductive rubber for the insulation The manufacture of the shaped body (connector), that is to say the manufacture of the inner semiconducting layer or the outer semiconducting layer, has the disadvantage of being longer in addition to the cost and higher in cost. On the other hand, in the inter-distribution-distribution member of such a structure, the connection conductor inside the connector is formed in a concave shape, and is fitted to the insulated bus-side conductor or the machine-side bushing-side conductor for communication between the distribution boards which are formed in a convex shape, and Let the two be electrically connected. In this case, in the case where the connecting conductor inside the connector is formed in a convex shape, it is necessary to make the insulating bus-side conductor or the machine-side bushing-side conductor in the inter-disc interface to be recessed for fitting, and the tube conductor is suitable as this. A concave conductor. However, when the tube conductor is used as the insulated busbar side conductor or the machine side bushing side conductor for the inter-disc communication, since the connection to the connection conductor inside the connector is abutting structure, it is caused by the energization toward the tube conductor. The thermal energy, the tube conductor will extend in the axial direction, the stress will be applied to the docking position, which may damage the insulated busbar or the machine side bushing. [Patent Document 1] JP-A-2002-101544 SUMMARY OF INVENTION [Problems to be Solved by the Invention] In order to solve the above problems, the first aspect of the present invention is to provide a terminal connecting portion of a connecting member instead of having a semiconductive rubber. The insulating profile (connector) of the stress cone-6 - 200908468 is formed on the outer periphery of the rubber-elastic insulator, and the outer semiconductive layer formed by coating the semiconductive paint is disposed in a predetermined interval, and A predetermined electric field relaxation layer ′ is disposed around the outer semiconductive layer to prevent concentration of an electric field at a front end portion of a shielding layer (external semiconductive layer) constituting the connection member; and a connection portion of the electric device is provided. By providing a space for absorbing the extending condition of the connecting member between the inner wall of the bushing and the end of the connecting member, it is possible to prevent the bushing for accommodating the end portion of the connecting member from being damaged. [Means for Solving the Problem] The terminal connecting portion of the connecting member of the first type of the present invention includes an insulating bushing having a receiving port at the end of the connecting member at the rear end portion, and detachably attaching An end portion of the connecting member connected to the accommodating port; and the connecting member includes an insulating body provided on the outer circumference of the conductor and having rubber-elasticity, and an outer semi-conductive layer provided on the outer periphery of the insulating body and a portion covering the inlet of the accommodating opening A ring-shaped electric field relaxation layer is provided on the rear end side of the bushing, and the front end portion side of the electric field relaxation layer extends toward the front end portion of the bushing than the front end portion of the outer semiconductive layer, and the electric field is relaxed to the outside. The periphery of the front end portion of the semiconductive layer is covered. The terminal connecting portion of the connecting member of the second type of the present invention includes an insulating bushing having a receiving port having an end portion of the connecting member at the rear end portion, and a connecting member detachably connected to the receiving port. The connecting member is provided with an outer insulating layer provided on the outer circumference of the conductor and having a rubber-like elasticity, and an outer semiconductive layer provided on the outer periphery of the insulator 200908468; and a rear end of the bushing The portion side has an annular electric field relaxation layer, and the front end portion side of the electric field relaxation layer extends toward the front end portion of the bushing than the front end portion of the outer semiconductive layer, and the front end portion of the outer semiconductive layer is formed by the electric field relaxation layer. The periphery is covered, and the outer semiconductive layer 'is formed by a coating layer of a semiconductive coating. The terminal connection portion 'of the connection member of the third type of the present invention includes an insulating bushing having a receiving port at the end of the connecting member at the rear end portion, and a connecting member detachably connected to the receiving port. The connecting member is provided with an insulating body provided on the outer circumference of the conductor and having a rubber-like elasticity, and an outer semiconductive layer provided on the outer periphery of the insulator, and a portion covering the inlet of the housing opening; at the rear end portion of the bushing The side has an annular electric field relaxation layer, and the front end side of the electric field relaxation layer extends more toward the front end portion of the bush than the front end portion of the outer semiconductive layer. The electric field relaxation layer surrounds the front end portion of the outer semiconductive layer. The front end portion of the 'liner' is covered in the casing of the machine, and the rear end portion thereof is airtightly fixed to the peripheral portion of the opening provided in the machine casing. The terminal connection portion of the connection member of the fourth type of the present invention includes an insulating bushing having a receiving port at an end portion of the connecting member at the rear end portion, and a connecting member detachably connected to the receiving port. The connecting member is provided with an insulating body provided on the outer circumference of the conductor and having a rubber-like elasticity, and an outer semiconductive layer provided on the outer periphery of the insulator, and a portion covering the inlet of the housing opening; at the rear end portion of the bushing On the side, there is a ring-shaped electric field relaxation layer, and the front end side of the electric field relaxation layer extends more toward the front end portion of the bushing than the front end portion of the outer semiconductive layer. The electric field relaxation layer will be the outer semi-conductive layer - 8 - 200908468 The periphery of the front end portion is covered, and the outer semi-conductive layer is formed by a coating layer of semi-conductive paint. The bushing has a front end portion located in the machine casing, and a rear end portion thereof is airtightly fixed to the machine casing. The peripheral portion of the opening provided. The fifth type of the present invention is a terminal connecting portion of the connecting member of any of the first to fourth types, and the end of the connecting member is provided with a male type attached to the receiving opening of the bushing. The insertion portion and the large diameter portion disposed concentrically with the insertion portion on the rear end side of the insertion portion and disposed in the opening of the machine casing; the fixed metal fastener attached to the connection member is locked to the large The diameter portion is fixed to the machine case. The sixth type of the present invention is a terminal connection portion of the connection member of any of the first to fourth types, and the end portion of the connection member is provided with a male type attached to the housing opening of the bushing. The insertion portion and the large diameter portion disposed concentrically with the insertion portion on the rear end side of the insertion portion and disposed in the opening of the machine casing; the fixed metal fastener attached to the connection member is locked to the large The outer semiconductive layer 'fixed to the outer circumference of the large-diameter portion of the machine casing ' is galvanically connected to the machine casing. The connection portion 'of the electric device of the seventh type of the present invention is provided with a pair of electrical devices that are disposed separately and insulatively fixed to the inner wall of the machine casing for accommodating each electrical device. The bushing and the receiving port provided at the rear end portion of the bushing are detachably connected to the connecting member of the end portion thereof; between the inner wall of the bushing and the end of the connecting member, there are: A space for absorbing the protrusion of the conductor constituting the connecting member. -9- 200908468 The connection portion of the electric machine of the eighth type of the present invention is provided with a pair of electric devices that are disposed separately, and an inner wall of the machine casing for accommodating each electric device, and are airtightly sealed. a fixed insulating bushing and a connecting member provided at the rear end portion of the bushing are detachably connected to the connecting member of the end portion thereof; between the inner wall of the bare sleeve and the end of the connecting member A space for absorbing the protruding portion of the conductor constituting the connecting member is provided, and the inner wall ' of the accommodating opening of the bushing is provided with a recessed portion that can accommodate only the end portion of the conductor. The connection portion 'of the electric device of the ninth type of the present invention is provided with a pair of electrical devices that are disposed separately, and an inner wall of the casing of the machine casing for accommodating each electrical device, and is airtightly fixed. The bushing and the receiving port provided at the rear end portion of the bushing are detachably connected to the connecting member of the end portion thereof; between the inner wall of the bushing and the end of the connecting member, there are: A space for absorbing the protruding portion of the conductor constituting the connecting member is provided with an inner conductor at the front end portion of the bushing. The conductor is electrically and slidably connected with respect to the inner conductor. The connection portion 'of the electric device of the tenth type of the present invention is provided with a pair of electrical devices that are disposed separately, and an inner wall of the machine casing for accommodating each electrical device, and is insulated and airtightly sealed. The bushing and the receiving port provided at the rear end portion of the bushing are detachably connected to the connecting member of the end portion thereof; between the inner wall of the bushing and the end of the connecting member, there are: A space for absorbing the protruding portion of the conductor constituting the connecting member is provided on the inner wall ' of the accommodating opening of the ferrule: a recess portion that can accommodate only the end portion of the conductor, and an inner conductor at the front end portion of the bushing , conductor-10-200908468 is electrically connected to the inner conductor and slidably connected. The first embodiment of the present invention is a conductor connected to the inner conductor for the connection portion of the electrical equipment of any of the ninth to tenth types, and is composed of a tube conductor. [Effect of the Invention] The terminal connecting portion of the connecting members of the first to sixth types of the present invention has the following effects. First, instead of an insulating molded body (connector) having a stress cone formed of a semiconductive rubber, an outer semi-conducting portion formed by coating a semiconductive paint is disposed on the outer periphery of the rubber-elastic insulator. a layer, and a predetermined electric field relaxation layer is disposed around the outer semiconductive layer, specifically, by arranging a predetermined metal ring, or as disclosed in Japanese Laid-Open Patent Publication No. 2005-1922-8 (refer to FIG. 2) The tapered opening prevents the electric field from concentrating at the front end portion of the shielding layer (external semiconductive layer) constituting the connecting member. Secondly, by arranging the front end portion of the metal ring or the tapered opening to cover the periphery of the front end portion of the outer semiconductive layer as the connecting member, it is possible to form an electric field absorbing portion which is not composed of a semiconductive rubber. Stress cone. Thus, with the present invention, it is not necessary to provide a semiconductive rubber in the stress cone, and the manufacturing step of omitting the inner semiconductive layer or the outer semiconductive layer can form a connection portion of a very inexpensive electrical machine. Further, in the rubber-elastic insulator, it is not necessary to relax the tapered structure of the electric field, so that the mold can be made into a simple structure, and the concave portion of the tapered opening is not required to be complicated. -11 - 200908468. Thirdly, it is possible to ship the constituent members (conductors and insulators) of the connecting members which are prepared in advance at the factory, and by assembling the constituent members of the connecting members in the field, the assembly operation can be simplified. Fourthly, by using a fixed metal fastener, the fixed metal fastener is disposed on a metal ring and a connecting member embedded on the rear end side of the bushing, and can connect the connecting member to the energizing member of the electric machine. Moreover, the connecting member can be detachably fixed to the machine casing. By the connection portion of the seventh type to the eleventh type electric machine, a space for absorbing the extension of the connecting member is provided between the inner wall of the accommodating opening of the bushing and the end of the connecting member ( Since the conductor protrudes from the absorption port, by energizing the conductor, even if the conductor extends in the axial direction, the space can be absorbed by the space (the conductor protrudes from the absorption port), thereby providing an electrical machine that does not damage the bushing. Connection. [Embodiment] Hereinafter, an embodiment of a terminal connecting portion to which a connecting member of the present invention is applied and a connecting portion of an electric device will be described with reference to the drawings. In the following embodiments, the energized members of the pair of electric machines that are disposed separately are configured to have the same configuration, respectively. Therefore, unless otherwise specified, one of the energizing members for the electric machine (the energized member of the electric device on the left side in the drawing) It is to be noted that when the "front end portion" of the bushing, the inner conductor, and the metal ring constituting the current-carrying member of the electric device is indicated, the high-pressure side of the bush, the inner conductor, and the metal ring is equivalent to the left direction in the drawing. 'When the "back end" of the lining-12-200908468, internal conductor and metal ring is pointed out, it means the low side of the casing, the inner conductor and the metal ring, which corresponds to the right direction in the figure, [Example 1] Fig. 1 is a partial cross-sectional view showing a connection portion of an electric device to which the present invention is applied to a gas insulated switchgear of a 3 3kV class. The energizing member of the electric machine used in the present invention will be described at the outset. In the first embodiment, the current-carrying member 1 of the electric device is provided with a bushing 1 made of a hard insulator such as an epoxy resin, and is airtight, and the opening of the bushing 1 is closed. The inner conductor 1 2 made of a copper rod or the like at the tip end portion of the sleeve 1 and the annular metal ring 13 concentrically embedded on the rear end side of the bushing 1 1 are formed. The bushings 1 are all bullet-shaped, and a receiving port 14 for accommodating an end portion of the connecting member 2 to be described later is provided on the rear end side (opposite side of the machine casing C). The accommodating port 14 is provided with a circular accommodating port provided at the rear end side of the bushing 1 1 (opposite the machine case C), that is, at the entrance of the end portion of the connecting member 2 (hereinafter referred to as The "inlet" 14a and the front end side (the inner space side of the machine case C) are reduced in diameter from the inlet 14a side to the conical storage port (hereinafter referred to as "conical hole") 14b, which has a narrow tip end. And a circular recessed portion (hereinafter referred to as "conductor extension absorption port") 14d' provided in the inner wall 1 4 C of the tapered hole 14b. The inlet 14a, the tapered hole 14b, and the conductor extend the absorption port. 1 4d ' is set to be concentric and connected to each other. The inner conductor 12' is provided with a cylindrical large-diameter portion (hereinafter referred to as "large-diameter inner conductor") in which the opening portion of the bushing π is closed at the inner circumference of the front end portion side of the bushing 11 - 200908468. 12a, a small-diameter portion (hereinafter referred to as a "small-diameter inner conductor" that is electrically connected to the conductor of the connecting member 2, which is disposed on the rear end side of the large-diameter inner conductor 1 2 a, is connected concentrically to the large-diameter inner conductor 12a. The upper flange of the connection portion where the large-diameter inner conductor 12a and the small-diameter inner conductor 12b are connected is provided with an annular flange member 12c extending outward in the diameter direction. An annular groove (not shown) is provided on the outer circumference of the small-diameter inner conductor 12b, and a strip-shaped conductor joint (multidirectional joint) 12 2 d is fitted in the groove along the circumferential direction. Here, the annular groove may be provided on the inner circumference of the conductor 2 1 which is a connecting member 2 to be described later, and a conductor joint (multidirectional joint) may be fitted in the groove along the circumferential direction. The flange member 12c is entirely embedded in the top of the bushing 11, and is disposed to intersect perpendicularly with respect to the insertion direction of the connecting member 2 to be described later. On the other hand, the outer peripheral edge portion of the flange member 12c is rounded to have a rounded structure, and the stress of the bushing 11 to be described later is concentrated on the rounded corner portion having the rounded structure. The metal ring 13 is embedded such that the rear end surface thereof (opposite to the machine casing C) and the rear end surface of the bushing 11 are aligned with each other on the rear end side of the metal ring 13, and are disposed along the circumferential direction. : a plurality of bolt holes 1 3 a for locking the front end portions of the first and second lock bolts b 1 and B 2 to be described later. The rounded corners are formed on the front end side of the metal ring 13 to have a rounded structure. Here, the front end portion of the metal ring 13 which has been subjected to the round corner processing is extended toward the front end portion of the outer semiconductive layer 24 which will be described later, and the front end portion is extended by -14 to 200908468, thereby covering the outer semiconductive with the metal ring 13 The periphery of the front end of the layer 24. Thereby, the electric field concentration near the front end portion of the outer semiconductive layer 24 is prevented. In the present embodiment, the energization member 1 of the electric machine is formed by injection molding epoxy resin on the outer periphery of the inner conductor 12. The energization member 1 of the electric machine of this configuration has the following effects. First, the stress of the epoxy resin as the bushing 11 is concentrated on the outer peripheral edge portion of the flange member 1 2 c connected to the outer periphery of the inner conductor 12, that is, the guide radius having a small radius of curvature The outer peripheral edge portion of the flange member 1 2 c makes the interface between the bushing 1 1 and the outer peripheral edge portion of the flange member 12 2 as the inner conductor 12 2 closer, even if the axial direction of the bush 1 1 is The insulating member 1 such as the SF6 gas charged in the casing C of the reduced-sized electric device of the electric device of the reduced size does not leak from the inside of the casing C to the outside of the casing C. Second, the flange member 12c as the inner conductor 12 is embedded in the outer side in the radial direction with respect to the bushing 1 1 so that the distance between the bushing 11 and the inner conductor 12 (distance of the gas leak path) can be made. If it is grown, even the energized member 1' of the reduced-type electric machine can prevent the leakage of the insulating gas even if the bushing 11' having a short axial length is used. Third, by forming the outer peripheral edge portion of the flange member 12c into a rounded shape, it is possible to prevent electric field concentration of the air at the tip end portion of the stress cone, the triple junction of the conductor 21, and the insulator 2 (triple joint). Fourth, the flange member 12c as the inner conductor 12 is embedded in the direction in which the bushing 11 extends outward in the radial direction with respect to -15-200908468, so that the impact of the epoxy resin as the bushing 11 can be reduced. That is, the faces of the flange members 12c are perpendicularly intersected with respect to the axis of the inner conductor π, or are disposed obliquely, so that the face of the flange member 12c can be applied when the energizing member 1 of the electric machine for the connecting member 2 is assembled. The stress on the bushing 1 1 can further alleviate the impact on the bushing 11 by alleviating the stress concentration on the bushing 11. Next, the terminal connection portion of the connection member of the energization member 1 of the electric device using the structure and the connection portion of the electric device will be described. In the first and second figures, the terminal connection portion of the connection member and the connection portion of the electric device of the present invention are provided with an electric device (not shown) such as a pair of switches or transformers that are disposed separately, and are in the air. The inner wall of the casing C of each electric appliance is densely housed, and the energizing member 1 of the electric appliance that is airtightly attached is connected to the connecting member 2 that is detachably connected between the energizing members 1 of the electric appliance And an annular fixed metal fastener 3 that detachably fixes the connecting member 2 to the machine casing C. First, a circular opening portion C1 is formed in the inner wall (side wall) of the casing C, and the energizing member 1 of the electric device is hermetically fixed to the peripheral portion of the opening C1 as follows. The bushing 11 of the energizing member 1 constituting the electric device has a front end portion located in the machine casing C, and a rear end portion is disposed to abut against a peripheral edge portion of the opening C1 of the machine casing C, by the first lock bolt B 1 fixed in a gas tight manner. Figure 15 shows the Ο-shaped ring. The connecting member 2 is provided with a conductor 2 1 made of a copper tube or the like, and a rubber-elastic insulator 22 which is provided on the outer periphery of the conductor 21 and is made of a rubber or the like, and is provided in the insulator 22 . The inner semiconducting layer 23 on the inner circumference and the outer semiconducting layer 24 provided on the outer periphery of the insulator 22; the constituent members are integrally assembled and fixed at the site as will be described later. The inner diameter of the conductor 21 is about the same diameter as the outer diameter of the small-diameter inner conductor 12b as the inner conductor 12, and the axial length thereof is between the axial length of the pair of bushings 1 1 and the inner wall 14c of the receiving port 14 of the pair of bushes 11. The same size. The insulator 22 is provided with a cylindrical insulator main body 22a having a length in the axial direction that is approximately the same as the axial length of the conductor 21, and a small-diameter portion disposed between the pair of machine casings C at the center portion thereof. (hereinafter referred to as "small diameter insulator") 221. At both end portions of the insulator main body 22a, a male insertion portion 222 for attaching to the housing opening 14 of the bushing 11 is provided at a position corresponding to the opening C1 of the machine casing C. In part, a large diameter portion (hereinafter referred to as "large diameter insulator") 223 is provided. Further, a stage wall 224 is provided at a connecting portion of the large-diameter insulator 223 and the small-diameter insulator 221 . The outer circumference of the insertion portion 222 is provided with a tapered portion corresponding to the inner circumferential surface of the tapered hole Mb as the storage opening 14, and the outer diameter of the large-diameter insulator 223 is smaller than the outer diameter of the diameter insulator 22 1 , and The diameter of the opening C 1 of the machine casing C is slightly larger than that of the casing C 1 . The inner semiconductive layer 23 and the outer semiconductive layer 24 are formed of a coating layer of, for example, a carbon-based semiconductive coating. The inner semiconductive layer 23 is provided to cover the entire length of the inner circumference of the insulator main body 22a. The outer semiconductive layer 23 is provided to electrically conduct the outer periphery of the small-diameter insulator 2 21, the outer surface of the stage wall -17-200908468 224, and the outer circumference of the large-diameter insulator 223, respectively. That is, in this embodiment, the outer semiconductive layer 24 is not provided in the surface of the insertion portion 222 which abuts against the inner circumferential surface of the tapered hole 14b of the container 14. The fixed metal fastener 3 is provided with an annular first-genus fastener body 31 having an inner diameter of about the same diameter or a slightly larger diameter as the outer diameter insulated from the small diameter, and having the outer same as the large-diameter insulator 223 An annular second fixed metal fastener main body 32 having an inner diameter of a diameter; the first and second fixed metal fastener main bodies 31'32 are connected to each other, and a card engaged with the stage wall 224 is formed on an inner peripheral side thereof. The fixed metal fastener 3 3 is equidistantly disposed in the circumferential direction of the bit corresponding to the bolt hole 13 a to pierce the second lock bolt B2 34 (refer to FIG. 2). The connecting member 2 of this structure is detachably connected to the energizing member 1 of the electric device, except that it is integrated as follows. First, the insulator 22 in which the conductor 21 is inserted into the insulator 22 is crushed, and one end side of the annular fixed metal buckle insulator 22 is inserted into the insulator 22 in this state, whereby the insulator 22 can be fixed. The locking portion 3 3 of the metal fastener 3 is engaged with the stage wall 224 of 22. Next, the conductor 21 is inserted into the inside of the insulator 22 from one side of the insulator 22. Thereby, 22 can be integrated with the conductor 21. One end portion (the end portion on the left side in the drawing) of the connecting member 2 that is integrally assembled and fixed in this manner is inserted, and one of them is said to be fixed in the outer diameter of the outer body 221 as a receiving body. 33. In the setting, before the insertion, before, will be: 33 from the outer circumference. The electric -18-200908468 machine (the electric device on the left side in the figure) of the insulator of the insulator constitutes the accommodating port 14 of the bushing 1 1 of the energizing member 1, and the conductor 21 constituting the connecting member 2 is inserted into the inner conductor. A small diameter inner conductor 12b of 12. Thereby, the conductor 21 and the inner conductor 12 are electrically connected and slidably connected via the conductor joint 12d. Next, the second lock bolt B2 is inserted into the through hole 34 of the fixed metal fastener 3, and the front end portion of the lock bolt B2 is rotationally fitted to the corresponding bolt hole 13a. Thereby, the fixed metal fastener 3 and the one end portion of the connecting member 2 are screwed toward the machine casing C side, and the insertion portion 22 as the insulator 22 is pressed toward the receiving opening 14 of the bushing 11. By pressing the insertion portion 222 as the insulator 22 toward the accommodating port 14 of the bushing 1 1 , the tapered portion of the insertion portion 222 as the insulator 22 is pressed against the tapered portion of the bushing 1 1 as the accommodating port 14 The inner peripheral surface of the hole 14b can further ensure the insulating property of the interface between the receiving port 14 of the bushing 1 and the insertion portion 222 as the insulator 22. The electrical semi-conductive layer 24 is electrically connected to the ground potential of Machine box C. Then, 'the other electric machine (the electric device on the right side in the figure) is moved to a predetermined position via a caster (not shown) or the like, and the other end of the connecting member 2 (the end on the right side in the drawing) is The above-described insertion into the housing port 14' of the bushing n of the energizing member 1 constituting the other electric device is similarly inserted into the small-diameter inner conductor 丨 2b of the connecting member 2 and connected to the inner conductor 12, and The lock bolt B2 inserted into the through hole 34 of the fixed metal fastener 3 is screwed toward the machine casing C. By this, -19-200908468 becomes a connection point for a pair of electrical machines to be connected. As described above, the terminal connecting portion of the connecting member of the present invention has the following effects. The first 'replaces an insulating molded body (connector) having a stress cone composed of a semi-conductive rubber, and covers an outer semi-conductive portion formed by coating a semiconductive paint on a periphery of a rubber-elastic insulator a layer 24, and a predetermined electric field relaxation layer is disposed around the outer semiconductive layer 24, specifically, by arranging a predetermined metal ring 13, or Japanese Patent Laid-Open Publication No. 2005-92283 (refer to FIG. 2) The tapered opening is formed to prevent electric field concentration at the front end portion of the shielding layer (the outer semiconductive layer 24) constituting the connecting member 2. Secondly, by arranging the front end portion of the metal ring 13 or the tapered opening to cover the periphery of the front end portion of the outer semiconductive layer 24 as the connecting member 2, it can be formed without having a semiconductive rubber. The stress cone of the electric field relaxation portion. Thus, by the present invention, it is not necessary to provide a semiconductive rubber in the stress cone, and it is possible to omit the manufacturing steps of the inner semiconductive layer or the outer semiconductive layer, and it is possible to form a connection portion of a very inexpensive electrical machine. Further, in the rubber-elastic insulator, it is not necessary to provide a tapered opening structure for relaxing the electric field, and the mold can be made into a simple structure, and the complicated operation of applying the concave portion of the tapered opening is not required. Third, the constituent members (conductor 21, insulator 22) of the connecting member 2 which is prepared in advance at the factory can be shipped, and the assembly members of the connecting member 2 can be assembled in the field, whereby the assembling operation can be simplified. Fourthly, by using the fixed metal fastener 3, the fixed metal fastener is provided in the metal ring 13 and the connecting member 2 embedded in the rear end side of the bushing 1 1 and can be The connecting member 2 is connected to the energizing member 1' of the electric machine and can be detachably fixed to the machine casing C. By the connection portion of the electric machine of the present invention, between the inner wall 14c of the housing opening 14 of the bushing 11 and the end of the connecting member 2 (conductor 21), there is provided for absorbing the extension of the connecting member 2. Since the space (the conductor protrudes from the absorption port 14d), by energizing the conductor 21, even if the conductor 21 extends in the axial direction, it can be absorbed by the space (the conductor protrudes from the absorption port), thereby providing no The connection of the electrical machine that has damaged the bushing 11. [Embodiment 2] Fig. 3 is a partial cross-sectional view showing another embodiment of a terminal connecting portion of a connecting member of the present invention. The same portions as those in the first and second figures are denoted by the same reference numerals and will not be described in detail. In Fig. 3, in this embodiment, the insulating plug 5 is connected instead of the connecting member 2 shown in Figs. 1 and 2 . The insulating plug 5 is provided with an insulating plug main body 51 made of a rubber-based elastic body such as rubber or the like, and a circular metal integrally formed with the insulating plug main body 51 is provided at a rear end portion of the insulating plug main body 51. Board 52. The insulating plug main body 5 1 is provided with an insertion portion 51 a similar to the male insertion portion 222 as the insulator 22 on the distal end side, and is provided at the rear end portion in the same manner as the large-diameter insulator 223 as the insulator 22 described above. The large-diameter insulator 5 1 b is provided at the center of the front end portion of the insertion portion 5 1 a with a recessed portion 5丨c into which the small-diameter inner conductor 1 2 b can be inserted. On the outer circumference of the large-diameter insulator 51b of the insulating plug main body 51 and the outer surface of the recessed portion 51c, coating layers 51d and 51e of a carbon-based semiconductive paint are provided. In this embodiment, the locking portion 33 of the fixing metal fastener 3 is locked at the outer periphery of the rear end portion of the insulating plug 5, and the through hole 34 of the fixing metal fastener 3 is inserted in the same manner as described above. The front end portion of the second lock bolt B2 is screwed to the bolt hole 13a' to connect the insulating plug 5 to the energizing member 1' of the electric machine by rotation, and is detachably fixed to the machine casing C. In this embodiment, since the energization member 1 of the electric device similar to that of the first embodiment is disposed, the insulating gas (SF6 gas or the like) charged in the machine casing C does not occur in the same manner as in the first embodiment. Leaking from the inside of the machine casing C to the outside, by using the metal ring 13 embedded in the rear end side of the bushing 1 and the fixing metal fastener 3 disposed at the rear end portion of the insulating plug 5, Then, the insulating plug 5 can be connected to the energizing member 1' of the electric machine and detachably fixed to the machine casing C. [Industrial Applicability] The present invention has been described with respect to the specific embodiments shown in the drawings. The present invention is not limited to the embodiments, and the present invention can be made as follows. The structure described. First, in the above embodiment, although the electric field concentration of the end portion of the shielding layer (outer semiconductive layer) is prevented by the metal ring 13, the present invention is not limited thereto, for example, a cone is used instead of the metal ring 13 The mouth is also OK. Secondly, in the terminal connection portion of the above-mentioned connecting member, the connection is not limited to 22-200908468. The member is provided with an insulator on the outer circumference of the tubular conductor. For example, it is also possible to cover the outer circumference of the stranded cable conductor with a bridged polyethylene resin or the like. Power cable. The third insulator as the connecting member is not limited to the rubber, and may be, for example, a rubber-elastic insulator such as ethylene propylene rubber. Fourth, the inner conductor and the conductor as the connecting member are not limited to being formed of copper. For example, it may be formed of a copper alloy, aluminum or an aluminum alloy. Fifthly, the present invention is not limited to the connection between the switchboards of the opening and closing device, and the present invention is not limited thereto. For example, the present invention is also applicable to an electric conduction member that is directly connected to an electric device of the device, and a so-called machine to which a terminal portion of the power cable is connected. Direct connection type terminal connection. Sixthly, in the above embodiment, the case where the energization member of the electric device is used as the gas inner liner is described, but the present invention is not limited thereto, and may be applied to, for example, an oil inner liner or a gas inner liner or Solid insulating bushings, etc. Seventh, in the above embodiment, although the applicable voltage is 3 3 kV, the present invention is not limited thereto, and is also applicable to a voltage lower than 33 kV or higher. Eighth, in the connection portion of the electric device, the inner semiconductive layer 23 and the outer semiconductive layer 24 are not limited to the application of a carbon-based semiconductive paint, and a semiconductive rubber may be formed. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a partial cross-sectional view showing the connection portion of the terminal member -23-200908468 and the electrical device of the connecting member according to the first embodiment of the present invention. Fig. 2 is a schematic view showing the assembly of the terminal connecting portion of the connecting member and the connecting portion of the electric device according to the first embodiment of the present invention. Fig. 3 is a partial cross-sectional view showing the terminal connecting portion of the connecting member of the second embodiment of the present invention. [Main component symbol description] 2: Connecting member 1 1 : Bushing 1 2 : Inner conductor 12c : Flange member 13 : Metal ring 1 4 : Storage port 14d : Space (conductor extending absorption port) 21 : Conductor 22 : Insulation Body 2 3 : Internal semiconductive layer 24 : External semiconductive layer 223 : Large diameter portion (large diameter insulator) C : Machine case C 1 : Opening portion - 24 -