201042694 ，· - 六、發明說明： - 【發明所屬之技術領域】 本發明係關於例如用於電力用送配電設備或受電設備 的斷路器，特別是關於斷路器之絕緣框體（frame)的構造。 【先前技術】 ' 就習知斷路器而言，已知有如第17圖至第19圖所示 者。第17圖為斷路器之要部剖面側面圖，第18圖為從A-A 方向觀看第17圖所見之圖，第19圖為第17圖之平面圖， 〇 於該等各圖中，1為真空閥（vacuum valve)，2為水平方向 剖面各相構成為大致U字狀的絕緣框體，其係由基板2a、 側板2b所構成。2c為絕緣框體2之上端，2d為侧板2b之 水平方向的開口端^ 2e為設於比絕緣框體2之上端2c為 * 下方側之基板2a的貫通孔，2f係為設於絕緣框體2之下 v 部侧之基板2a的貫通孔。3為設於真空閥1之固定側端部 且在軸方向端部具有接觸面的固定電極板，4為可動電極 棒，5為從兩側挾入可動電極棒4而裝設的可動側端子金 〇 屬件，6為一側連接至可動側端子金屬件5的可撓性導體， 7為連接至可動電極棒4的絕緣桿（rod)。 8係以上表面為比絕緣框體2之上端2c為下方側且與 貫通孔2e之下端為同一水平位置的方式設於絕緣框體2之 側板2b間的導體安裝部，9係以上表面為與導體安裝部8 之上表面為同一水平位置的方式而分別設置於絕緣框體2 之基板2a與側板2b之角（corner)部的導體安裝部，10為 以下表面與絕緣框體2之貫通孔2f之上端為同一水平位置 4 321376 201042694 的方式設於絕緣框體2之基板2a的導體安襞部。n為由 設置在形成於絕緣框體2之基板2a的貫通孔2e部之絕緣 材所構成的上側導體插通筒體，12為由設置在形成於絕緣 *框體2之基板％的貫通孔2f部之絕緣材所構成的下側導 體插通筒體。 13為將絕緣框體2之基板2a的貫通孔2f與下側導體 插通筒體12内插通的下部側端子導體，係由與可撓性導體 ❹6連接的連接部13a及與未圖示的下部側主電路接合點 (junction)連接的導出部i3b所構成，下部側端子導體j3 之連接部13a與可撓性導體6之另一侧係藉由螺栓（b〇it) Η、螺帽（nut)15堅固地安裝於導體安裝部1〇而連接。 . 16係將絕緣框體2之基板2a的貫通孔2e與上侧導體 ^插通筒體11内插通的固定側之上部侧端子導體，其係由一 侧於導體安裝部8,另一側橫跨於導體安裝部9間的平面 狀部16a ;從絕緣框體2朝外部導出且連接未圖示之上部 〇側主電路接合點的大致圓柱狀導出部16b ;以及於大致平 面狀部16a之上表面含有大致平面狀部16a的剖面為大致 T形且朝上部側端子導體16之軸方向延伸的補強部i6c所 構成，於此例中，平面狀部16a、導出部16b、及補強部 16c係藉由鑄造而一體製作。又，平面狀部16a之絕緣框 體2的基板2a側係分別形成有朝側板2b側延伸的延伸部 16al。 上部側端子導體16之平面狀部其一侧係載置於設 於絕緣框體2之側板2b間的導體安裝部8、及另—側載置 321376 5 201042694 •於分別設於絕緣框體2之基板2a與側板2b之角部的導體 *安裝部9，並從導體安裝部8及導體安裝部9之下方將螺 栓17及螺栓18插通而螺固於平面狀部恤，藉此將上部 '側端子導體16之平面狀部此堅固地安裝於導體安褒部8 :及導體安裝部9。此外，上部側端子導體16之平面狀部16a 下表面係作為真二閥1之保持面1 而與真空闕1之固 定電極板3之上端面抵接，將兩者間藉由螺栓19而堅固地 固定。 〇 於如上所述構成的習知斷路器中，上部侧端子導體16 係安裳於設置在比絕緣框體2之上端2e為下方側的導體安 裝部8、導齡裝部9，且導體安裝部8係被設置於比絕緣 .框體2之水平方向開口端2(1更近基板仏側之中心部侧， •且上部侧端子導體16係以平面狀部恤構成。將真空闕上 安農於上部側端？導體16之平面狀部此之下表面側時， 真空閥1與絕緣框體2之側板2b、導體安裝部8及導體安 〇裝部9之間所形成的隙縫較小。藉由斷路器内之自然對 w ’進订從上述隙縫之下方向往上方向的通氣，而使上部 側端子導體16冷卻。 [先行技術文獻] [專利文獻] [專利文獻1]日本特開平丨1_4〇〇19號公報 【發明内容】 (發明所欲解決的課題） 於前述習知斷路器中，上部侧端子導體16係安裝於設 321376 201042694 在比、、€、緣框體2之上端2C為下方侧的導體安裝部8、導體 安裝邛9，且導體安裝部8係設於比絕緣框體2之水平方 向開口端2d更接近基板2a側之中心部側，另外，由於上 .部側端子導體16係由平面狀部恤所構成，故將真空闕1 _安裝於上部側端？導體16之平面狀部16a之下表面側時， 形成在真空閥1與絕緣框體2之側板2b、導體安裝部8及 導體安裝部9之間的隙縫較小，而無法將由自然對流而進 〇行的從前述隙縫之下方向往上方向通氣所需的通氣用面積 擴大。特別是因為絕緣框體2之基板2 a側有上部侧端子導 體16之平面狀部16a往側板沈側突出的突出部16幻而成 為幾乎無法通氣的狀態。結果，不但上部侧端子導體Μ之 .冷卻特性降低，就斷路器整體而言的冷卻性能也下降，結 .果，為了使斷路器成為規格所定的預定溫度上升值以下而 不得不減少通電電流值，而有導致斷路器之通電性能降低 之問題。 〇 另外’於習知之斷路器中，由於作成使上部側端子導 體16及下部側端子導體13從絕緣框體2之基板％導出至 外部，故有於絕緣框體2之基板2a形成貫通孔2e及貫通 孔2f的需要，且需於該貫通孔2e部及2f部設置由絕緣材 構成的上側導體插通筒體U及下側導體插通筒體12，而 有使包含該等上側導體插通筒體u及下侧導體插通筒體 12、‘體女裝部8、導體安裝部g、導體安裝部1〇的全體 絕緣框體2成為複雜構成的課題。 本發明係為了解決上述課題而研發出者，其目的為提 321376 7 201042694 供可以簡單的構成提昇冷卻性能的斷路器。 ~ (解決課題的手段） 本發明之斷路器係具有：藉由基板和與該基板正交的 . 方向相對而配置的一對側板而構成水平方向剖面大致為u 字狀且於垂直方向上端具有開口的絕緣框體20 ;配置於前 述絕緣框體内的真空閥；以及連接於前述真空閥之上端部 及下端部且導出至外部的上部側端子導體及下部側端子導 體，該斷路器之特徵為具有：第1上部側絕緣樑體，係於 ^ 前述絕緣框體之基板上端跨設於前述侧板間，且於中央部 安裝有前述上部側端子導體之一端部；以及第2上部側絕 緣樑體，係於前述絕緣框體之側板上端且於前述U字狀開 口端跨設於前述側板間，且於中央部安裝有從前述上部側 端子導體之一端部延伸的前述上部侧端子導體之中間部。 ^ (發明效果） 依據本發明之斷路器，由於為設有：第1上部側絕緣 Q 樑體，係於絕緣框體之基板上端跨設於側板間，且於中央 部安裝有上部侧端子導體之一端部；以及第2上部侧絕緣 樑體，於絕緣框體之側板上端且於ϋ字狀開口端跨設於側 板間，且於中央部安裝有從上部側端子導體之一端部延伸 的上部側端子導體之中間部的構成，藉此可獲得通氣性提 昇而明顯提昇冷卻性能的斷路器。此外，也可獲得構造簡 單的絕緣框體。 【實施方式】 第1實施形態 8 321376 201042694 能第了= 至第4圖說明本發明之第1實施形 :造;有本發明第1實施形態之遮斷器的絕緣框 t體的斜視圖°帛2圖為示有本發明第1實施形態之斷 路益軌緣框體構造體的正面圖。第3圖為示有本發明第 1實施形態之斷路器的絕緣框體構造體的平面圖。第、圖 為丁有本⑼第i貫施形態之斷路器的絕緣框體構造體的 側面圖。 ❹ "/等各圖中’ 2G為絕緣框體，圖係示有為三相一體 型=情形作為―例。各相係藉由基板2Ga和與該基板2〇a 正交的方向相對而配置的一對側板而構成水平方向剖 面大致為U字狀且於垂直方向上端具有開口的絕緣框體 .20。21係於絕緣框體20之基板20a上端跨設於側板2〇b -]且於中央°卩21a例如安裝有板狀的上部侧端子導體& 之一端部22a㈤第i上部側絕緣樑體。帛j上部側絕緣樑 體21係於圖中例示為中央部21a比兩端部21b更朝上方突 〇出之構成且兩端部21b配置為傾斜狀。亦即，兩端部2 = 係形成從中央部2丨a往絕緣框體2 〇之側板2 〇 b側下降的傾 斜面。 、 23係於絕緣框體2〇之側板2〇b上端且於[j字狀開口 端跨設於側板20b間，且於中央部23a安裝有從上部:端 子導體22之一端部22a延伸的上部侧端子導體22之中間 P 22b的第2上部侧絕緣樑體。第2上部側絕緣樑體23係 於圖中例示為中央部2如比兩端部23b更朝上方突出的構 成，並且兩端部23b係配置為傾斜狀。亦即，兩端部23b 321376 9 201042694 係形成從中央部23a往絕緣框體2〇之側板2〇b側降低的傾 ' 斜面。 24係於第2上部側絕緣樑體23之下方側於u字狀開 ,口端跨設於側板20b間’將下部側端子導體（未圖示）之導 出部安裝的下部侧絕緣樑體。25為使絕緣框體20之各相 間的侧板20b之上端部往上方向延伸的分隔板。又，從上 部側端子導體22之中間部22b延伸的另一端部22c係連接 於未圖示的上部侧主電路接合點。另外，於安裝於下部側 〇絕緣樑體24的下部铡端子導體（未圖示）之導出部係連接 有未圖示的下部側主電路接合點。 接著對於動作進行說明。於前述第1實施形態之斷路 •器中，第1上部侧絕緣樑體21係於絕緣框體20之基板20a •上端跨設於侧板201)間，第2上部側絕緣樑體23係於絕緣 框體20之側板20b上端且於u字狀開口端跨設於侧板2〇b 間。如上所述，構成為將第1上部侧絕緣樑體21及第2上 Ο部側絕緣樑體23配置於絕緣框體20之上端且於基板2〇a 側及U字狀開口端側，且將跨於第！上部側絕緣樑體21及 第2上部侧絕緣樑體23之中央部21a及23a上的板狀簡單 構造之上部側端子導體22藉由未圖示的螺检等鎖結體而 安裝’藉此不但比起前述習知斷路器可顯著地提昇絕緣桓 體20之Λ端部的通氣用面積，^因上部側端子導體22為 板狀的簡單構造，故沒有如前述習知斷路器中的上部側端 子導體16之平面狀部16a的突出部16&1般阻礙通氣的構 件而可顯著地提昇通氣特性。 321376 10 201042694 另外，上部側端子導體22係形成位於比絕緣框體20 ' 之上端更上方的位置而顯著提昇通氣特性，相比於如上所 述之習知斷路器配置於比絕緣框體2之上端為下方且被絕 - 緣框體2之基板2a及侧板2b圍起者更能顯著提昇冷卻性 . 能。 t 另外，第1上部側絕緣樑體21及第2上部側絕緣樑體 23之中央部21a及23a係作成為比兩端部21b及23b更往 上方突出的構成，藉此可使安裝於第1上部侧絕緣樑體21 ® 及第2上部側絕緣樑體23之中央部21a及23a的上部側端 子導體22位於更上方，而可更加增大通氣用面積並且提昇 通氣特性，而可更加提昇上部侧端子導體22及全體斷路器 之冷卻性能。 另外，第1上部側絕緣樑體21及第2上部側絕緣樑體 23之兩端部23b係作成從中央部21a及23a往絕緣框體20 之側板20b側降低的傾斜面，藉此當因設置斷路器之設備 q 的結露而有水滴滴落在第1上部側絕緣樑體21及第2上部 側絕緣樑體23上時，其將沿著第1上部側絕緣樑體21及 第2上部側絕緣樑體23之兩端部21b及23b之傾斜面流下 而不會形成積水，故可以獲得不會因結露而導致絕緣性能 降低的高可靠性斷路器。 另外，有時會因斷路器周圍之環境而存有塵埃，但於 此情形中，由於塵埃難以滯留在第1上部侧絕緣樑體21及 第2上部侧絕緣樑體23之兩端部21b及23b之傾斜面且不 會沿著該傾斜面流下而堆積，故可以獲得不會因塵埃而導 11 321376 201042694 致絕緣性能降低的高可靠性斷路器。 ' 又，上部側端子導體的寬度及厚度會對應於流動在該 上部側端子導體的額定電流而產生變化，於前述習知斷路 - 器中，上部側端子導體16形成複雜的構成並且被絕緣框體 , 2之基板2a及側板2b包圍，故非常難以對應額定電流之 容量而自由改變上部側端子導體16之寬度及厚度。但是， 依據此第1實施形態，藉由採用於第1上部側絕緣樑體21 及第2上部侧絕緣樑體23之中央部21a及23a上安裝上部 ^ 側端子導體22的構成，即可達到於周圍沒有形成阻礙的構 件，且可對應額定電流之容量而自由改變上部側端子導體 22之幅度和寬度的效果。 另外，由於採用將下部側絕緣樑體24設置於第2上部 侧絕緣樑體23之下方側且於U字狀開口端跨設於側板23b 間，並安裝未圖示的下部侧端子導體之導出部的構成，故 藉由與第2上部側絕緣樑體23配合的相乘效果，可將整體 Q 絕緣框體20的強度、剛性更加提昇。 另外，為了謀求絕緣框體20之各相間的小型化，而設 有使各相間之絕緣框體20之側板20b上端朝上方延伸之分 隔板25以確保絕緣沿面距離。當可充分確保絕緣框體20 之各相間的絕緣沿面距離時亦可降低分隔板25之高度，或 改採不設置分隔板25的方式。 又，絕緣框體20、第1上部側絕緣樑體21、第2上部 側絕緣樑體23、以及下部側絕緣樑體24係構成為一體構 造體。 12 321376 201042694 弟2實施形態 依據第5圖說明本發明之第2實施形§。第5圖為示 有本發明第2實施形態之斷路器的平面圖。 ， *' 於此第2實施形態中，係使位於絕緣框體20之各相間 的側板2〇b相鄰接側的第2上部側絕緣樑體23之端部23b 往第1上部側絕緣樑體21側凹陷。於第2上部側絕緣樑體 23之中央部23a上安裝有上部側端子導體22之中間部 〇 2 2 b ’且配置有從該中間部2 2 b往未圖示的主電路接合點側 延伸的另-端侧22c。但是，依據此第2實施形態，位於 絕緣框體20之各相間的側板2〇b相鄰接側的帛2上部側絕 緣樑體23之端部23b往第1上部側絕緣樑體21侧凹陷， 藉此可更加增加絕緣沿面距離，而可更為提昇絕緣特性。 另外’隨著絕緣沿面距離更加增加同時也可使實現絕緣框 體20之小型化和更使斷路器小形化。 苐3實施形態 〇 依據第6圖及第7圖說明本發明之第3實施形態。第 6圖係不有本發明第3實施形態之斷路器的絕緣框體構造 體的斜視圖。第7圖係示有本發明第3實施形態之斷路器 的絕緣框體構造體的正面圖。 於該等各圖中，為絕緣框體，20a為絕緣框體20之 基板，20b為絕緣框體20之側板，22係上部側端子導體， 22a為上部側端子導體之一端部，22b為上部侧端子導體 之中間部，22c為上部側端子導體22之另一端部，24為下 部側絕緣樑體，25為分隔板。 321376 13 201042694 26係於絕緣框體20之基板20a上端跨設於側板2〇b 間’於中央部26a例如安裝有板狀上部側端子導禮22之一 端部22a的第1上部側絕緣樑體，其係構成為大致梯形狀。 第1上部側絕緣樑體2 6係於圖中例示為中失部2丨a比兩端 部26b更往上方突出的構成，且兩端部26匕之上表面係配 置為傾斜狀。亦即，兩端部26b之上表面係开^成從中央部 26a往絕緣框體20之側板20b側降低的賴斜面。201042694, - - 6. Description of the Invention: - Technical Field of the Invention The present invention relates to a circuit breaker for use in, for example, a power transmission and distribution device or a power receiving device, and more particularly to a structure of an insulating frame of a circuit breaker. . [Prior Art] 'As far as the conventional circuit breaker is concerned, as shown in Figs. 17 to 19, it is known. Figure 17 is a side view of the main part of the circuit breaker, Figure 18 is a view seen from Figure 17 in the direction of AA, and Figure 19 is a plan view of Figure 17, and in these figures, 1 is a vacuum valve (vacuum valve), 2 is an insulating frame in which each phase of the horizontal cross section is formed in a substantially U shape, and is composed of a substrate 2a and a side plate 2b. 2c is the upper end of the insulating frame 2, and 2d is the horizontal end opening 2e of the side plate 2b is a through hole provided in the substrate 2a which is lower than the upper end 2c of the insulating frame 2, and 2f is provided in the insulation A through hole of the substrate 2a on the side of the v portion below the casing 2. 3 is a fixed electrode plate provided at a fixed side end portion of the vacuum valve 1 and having a contact surface at an end portion in the axial direction, 4 is a movable electrode rod, and 5 is a movable side terminal which is fitted with the movable electrode rod 4 from both sides. The metal member is a flexible conductor that is connected to the movable side terminal metal member 5 at one side, and 7 is an insulating rod that is connected to the movable electrode rod 4. The surface of the ninth or more is a conductor mounting portion provided between the side plates 2b of the insulating housing 2 so as to be lower than the upper end 2c of the insulating housing 2 and at the same horizontal position as the lower end of the through hole 2e. The upper surface of the conductor mounting portion 8 is provided at the same horizontal position, and is respectively provided in the conductor mounting portion of the corner portion of the substrate 2a and the side plate 2b of the insulating housing 2, and 10 is a through hole of the lower surface and the insulating frame 2 The upper end of 2f is the same horizontal position 4 321376 201042694 and is provided in the conductor mounting portion of the substrate 2a of the insulating housing 2. n is an upper conductor insertion cylindrical body formed of an insulating material provided in the through hole 2e portion of the substrate 2a formed in the insulating housing 2, and 12 is a through hole provided in the substrate % formed in the insulating * frame 2 The lower conductor formed of the insulating material of the 2f portion is inserted into the cylindrical body. 13 is a lower-side terminal conductor through which the through hole 2f of the substrate 2a of the insulating housing 2 and the lower-side conductor insertion tube 12 are inserted, and the connecting portion 13a connected to the flexible conductor 6 and not shown The lower side main circuit junction portion is connected to the lead portion i3b, and the lower side terminal conductor j3 is connected to the other side of the flexible conductor 6 by a bolt (b〇it), a nut (nut) 15 is firmly attached to the conductor mounting portion 1 to be connected. 16 is a fixed-side upper-side terminal conductor in which the through-hole 2e of the substrate 2a of the insulating housing 2 and the upper-side conductor inserted into the cylindrical body 11 are inserted, and the one side is connected to the conductor mounting portion 8, and the other is The side straddles the planar portion 16a between the conductor mounting portions 9 and is led out from the insulating housing 2 to the outside, and is connected to a substantially cylindrical lead-out portion 16b (not shown) at the top side main circuit junction; and in a substantially planar portion The upper surface of the upper surface 16a includes a substantially T-shaped cross section and a reinforcing portion i6c extending in the axial direction of the upper terminal conductor 16, and in this example, the planar portion 16a, the lead portion 16b, and the reinforcing portion The portion 16c is integrally formed by casting. Further, on the side of the substrate 2a of the insulating frame 2 of the planar portion 16a, an extending portion 16a1 extending toward the side plate 2b side is formed. The planar portion of the upper-side terminal conductor 16 is placed on one side of the conductor mounting portion 8 disposed between the side plates 2b of the insulating housing 2, and the other side is placed 321376 5 201042694. The conductor * mounting portion 9 at the corner portion of the substrate 2a and the side plate 2b, and the bolt 17 and the bolt 18 are inserted from below the conductor mounting portion 8 and the conductor mounting portion 9 to be screwed to the flat t-shirt, thereby upper portion The planar portion of the side terminal conductor 16 is firmly attached to the conductor mounting portion 8 and the conductor mounting portion 9. Further, the lower surface of the planar portion 16a of the upper-side terminal conductor 16 serves as the holding surface 1 of the true two valve 1 and abuts against the upper end surface of the fixed electrode plate 3 of the vacuum crucible 1, and is sturdy with the bolt 19 therebetween. Ground fixed. In the conventional circuit breaker configured as described above, the upper-side terminal conductor 16 is mounted on the conductor mounting portion 8 and the lead-in mounting portion 9 which are disposed below the upper end 2e of the insulating housing 2, and the conductor is mounted. The portion 8 is provided on the side closer to the horizontal opening end 2 of the insulating body 2 (1 closer to the center side of the substrate side), and the upper terminal conductor 16 is formed of a flat t-shirt. When the flat portion of the upper side end? conductor 16 is on the lower surface side, the gap formed between the vacuum valve 1 and the side plate 2b of the insulating frame 2, the conductor mounting portion 8, and the conductor mounting portion 9 is small. The upper side terminal conductor 16 is cooled by the natural pair w in the circuit breaker, and the upper side terminal conductor 16 is cooled. [Patent Document] [Patent Document 1] Japanese Patent Laid-Open No. 1_4 〇〇19号 SUMMARY OF INVENTION [Problem to be Solved by the Invention] In the above conventional circuit breaker, the upper terminal conductor 16 is attached to the 321376 201042694 ratio, and the upper end 2C of the edge frame 2 is a conductor mounting portion 8 on the lower side and a conductor mounting port 9, The conductor mounting portion 8 is provided closer to the center portion side than the horizontal opening end 2d of the insulating housing 2 on the substrate 2a side, and since the upper portion side terminal conductor 16 is composed of a flat-shaped partial shirt, When the vacuum crucible 1 _ is attached to the lower side end of the upper side end of the flat portion 16a of the conductor 16, the gap between the vacuum valve 1 and the side plate 2b of the insulating frame 2, the conductor mounting portion 8, and the conductor mounting portion 9 is formed. It is small, and it is not possible to enlarge the ventilation area required for the airflow from the downward direction of the slit direction by the natural convection, especially since the substrate 2a side of the insulating frame 2 has the plane of the upper side terminal conductor 16. The protruding portion 16 of the portion 16a that protrudes toward the side of the side plate is in a state of being almost incapable of being ventilated. As a result, not only the cooling property of the upper terminal conductor is lowered, but also the cooling performance of the entire circuit breaker is lowered. In order to make the circuit breaker below the predetermined temperature rise value specified by the specification, it is necessary to reduce the current supply current value, and there is a problem that the power supply performance of the circuit breaker is lowered. 〇In addition, in the conventional circuit breaker, Since the upper side terminal conductor 16 and the lower side terminal conductor 13 are led out from the substrate % of the insulating housing 2, it is necessary to form the through hole 2e and the through hole 2f in the substrate 2a of the insulating housing 2, and it is necessary to The upper side conductor insertion tube U and the lower side conductor insertion tube body 12 made of an insulating material are provided in the through holes 2e and 2f, and the upper side conductor insertion tube u and the lower side conductor insertion tube are included. The entire body 12 of the body 12, the body wearing portion 8, the conductor mounting portion g, and the conductor mounting portion 1 has a complicated configuration. The present invention has been developed to solve the above problems, and its purpose is to provide 321376 7 201042694 Provides a circuit breaker that can easily form a cooling performance. (Means for Solving the Problem) The circuit breaker according to the present invention has a pair of side plates arranged to face each other in a direction perpendicular to the substrate, and has a substantially U-shaped cross section in the horizontal direction and an upper end in the vertical direction. An open insulating frame 20; a vacuum valve disposed in the insulating frame; and an upper side terminal conductor and a lower side terminal conductor connected to the upper end portion and the lower end portion of the vacuum valve and leading to the outside, the circuit breaker is characterized The first upper-side insulating beam body is disposed between the side plates at an upper end of the substrate of the insulating frame, and one end portion of the upper-side terminal conductor is attached to a central portion; and the second upper side is insulated The beam body is disposed at a side plate end of the insulating frame and spans between the side plates at the U-shaped open end, and the upper side terminal conductor extending from one end of the upper side terminal conductor is attached to the center portion Middle part. (Effect of the Invention) According to the circuit breaker of the present invention, since the first upper-side insulated Q-beam body is provided, the upper end of the substrate of the insulating frame is spanned between the side plates, and the upper-side terminal conductor is attached to the central portion. And the second upper side insulating beam body is disposed between the side plates at the side plate end of the insulating frame and at the U-shaped open end, and has an upper portion extending from one end of the upper side terminal conductor at the center portion The intermediate portion of the side terminal conductor is configured to thereby obtain a circuit breaker in which the air permeability is improved and the cooling performance is remarkably improved. In addition, a simple construction of the insulating frame is also available. [Embodiment] First Embodiment 8 321376 201042694 The first embodiment of the present invention will be described with reference to Fig. 4: Fig. 4 is a perspective view showing the insulating body t body of the circuit breaker according to the first embodiment of the present invention. FIG. 2 is a front elevational view showing the breakage rail edge frame structure of the first embodiment of the present invention. Fig. 3 is a plan view showing an insulating frame structure of the circuit breaker according to the first embodiment of the present invention. The figure is a side view of the insulating frame structure of the circuit breaker of the present embodiment of Ding You (9). ❹ "/etc. '2G is an insulated frame, and the figure shows a three-phase integrated type = case as an example. Each of the phases is formed by a pair of side plates arranged in a direction perpendicular to the direction in which the substrate 2Ga and the substrate 2A are opposed to each other, and an insulating frame having a substantially U-shaped cross section in the horizontal direction and having an opening at the upper end in the vertical direction is formed. The upper end of the substrate 20a of the insulating housing 20 is spanned over the side plate 2b-], and the upper end side terminal conductor 22a (5) is provided with a plate-shaped upper side terminal conductor & one end portion 22a (5) i-th upper side insulating beam body. The upper-side insulating beam body 21 is exemplified as a configuration in which the center portion 21a protrudes upward from the both end portions 21b, and the both end portions 21b are arranged in an inclined shape. That is, the both end portions 2 = form a sloped surface which descends from the central portion 2A to the side plate 2 〇 b side of the insulating frame 2 . 23 is attached to the upper end of the side plate 2〇b of the insulating housing 2〇, and is disposed between the side plates 20b at the [j-shaped open end, and the upper portion extending from the upper end portion 22a of the terminal conductor 22 is attached to the central portion 23a. The second upper side insulating beam body of the middle P 22b of the side terminal conductor 22. The second upper side insulating beam body 23 is exemplified as a structure in which the center portion 2 protrudes upward from the both end portions 23b, and the both end portions 23b are arranged in an inclined shape. That is, the both end portions 23b 321376 9 201042694 form a sloped slope which is lowered from the central portion 23a toward the side plate 2〇b side of the insulating housing 2〇. The lower end side of the second upper side insulating beam body 23 is formed in a u-shape, and the mouth end is spanned between the side plates 20b and the lower side insulating beam body of the lower side terminal conductor (not shown) is attached. Reference numeral 25 is a partitioning plate which extends the upper end portion of the side plate 20b of each of the insulating frames 20 in the upward direction. Further, the other end portion 22c extending from the intermediate portion 22b of the upper-side terminal conductor 22 is connected to an upper-side main circuit junction (not shown). Further, a lower-side main circuit junction (not shown) is connected to the lead-out portion of the lower-side terminal conductor (not shown) attached to the lower side insulating beam body 24. Next, the action will be described. In the circuit breaker according to the first embodiment, the first upper insulating beam 21 is attached to the substrate 20a of the insulating housing 20, the upper end is spanned between the side plates 201, and the second upper insulating beam 23 is attached to the circuit breaker. The upper end of the side plate 20b of the insulating frame 20 is spanned between the side plates 2〇b at the u-shaped open end. As described above, the first upper insulating member 21 and the second upper insulating member 23 are disposed on the upper end of the insulating housing 20 on the side of the substrate 2A and the U-shaped opening, and Will cross the first! The plate-like simple structure upper-side terminal conductors 22 on the central portions 21a and 23a of the upper-side insulating beam body 21 and the second upper-side insulating beam body 23 are attached by a lock body such as a screw which is not shown. Not only the conventional circuit breaker can significantly increase the ventilation area of the end portion of the insulating body 20, but the upper terminal conductor 22 has a simple plate shape, so that the upper portion of the conventional circuit breaker is not provided. The protruding portion 16&1 of the planar portion 16a of the side terminal conductor 16 substantially obstructs the member for ventilation and can significantly improve the ventilation characteristics. 321376 10 201042694 In addition, the upper-side terminal conductor 22 is formed at a position above the upper end of the insulating housing 20' to significantly improve the ventilation characteristics, and is disposed in the insulating housing 2 as compared with the conventional circuit breaker as described above. The upper end is lower and is surrounded by the substrate 2a and the side plate 2b of the edge-rim frame 2 to significantly improve the cooling performance. In addition, the central portions 21a and 23a of the first upper-side insulating beam body 21 and the second upper-side insulating beam body 23 are configured to protrude upward from the both end portions 21b and 23b, thereby being attached to the first 1 The upper side insulating beam body 21 ® and the upper side terminal conductor 22 of the central portions 21a and 23a of the second upper side insulating beam body 23 are located above, and the ventilation area can be further increased and the ventilation characteristics can be improved, and the ventilation characteristics can be further improved. Cooling performance of the upper terminal conductor 22 and the entire circuit breaker. Further, the both end portions 23b of the first upper side insulating beam body 21 and the second upper side insulating beam body 23 are formed as inclined surfaces which are lowered from the center portions 21a and 23a toward the side plate 20b side of the insulating housing 20, whereby When the dew condensation of the device q of the circuit breaker is provided and water droplets are dropped on the first upper side insulating beam body 21 and the second upper side insulating beam body 23, they will follow the first upper side insulating beam body 21 and the second upper portion. The inclined surfaces of the both end portions 21b and 23b of the side insulating beam body 23 flow down without forming water, so that a highly reliable circuit breaker which does not deteriorate in insulation performance due to dew condensation can be obtained. In addition, dust may be present in the environment around the circuit breaker, but in this case, it is difficult for the dust to stay in the first upper side insulating beam body 21 and the second upper side insulating beam body 23 at both end portions 21b and The inclined surface of 23b does not flow down along the inclined surface, so that a high-reliability circuit breaker that does not cause a decrease in insulation performance due to dust can be obtained. Further, the width and thickness of the upper-side terminal conductor vary depending on the rated current flowing through the upper-side terminal conductor. In the above-described conventional circuit breaker, the upper-side terminal conductor 16 is formed into a complicated structure and is insulated. Since the substrate 2a and the side plate 2b are surrounded by the body 2, it is extremely difficult to freely change the width and thickness of the upper terminal conductor 16 in accordance with the capacity of the rated current. According to the first embodiment, the upper portion side terminal conductor 22 is attached to the central portions 21a and 23a of the first upper insulating beam body 21 and the second upper insulating beam body 23, respectively. There is no member that forms an obstacle around, and the effect of the amplitude and width of the upper-side terminal conductor 22 can be freely changed in accordance with the capacity of the rated current. In addition, the lower side insulating beam body 24 is disposed below the second upper side insulating beam body 23 and spanned between the side plates 23b at the U-shaped open end, and the lower side terminal conductor (not shown) is attached. With the configuration of the portion, the strength and rigidity of the entire Q-insulated frame 20 can be further improved by the synergistic effect with the second upper-side insulating beam body 23. Further, in order to reduce the size of each phase of the insulating housing 20, a partition plate 25 for extending the upper end of the side plate 20b of the insulating frame 20 between the phases is provided to ensure the insulating creeping distance. The height of the partitioning plate 25 can also be lowered when the insulating creeping distance between the phases of the insulating frame 20 can be sufficiently ensured, or the manner in which the partitioning plate 25 is not provided can be changed. Further, the insulating frame body 20, the first upper side insulating beam body 21, the second upper side insulating beam body 23, and the lower side insulating beam body 24 are configured as a unitary structure. 12 321376 201042694 Younger Embodiments A second embodiment of the present invention will be described with reference to Fig. 5. Fig. 5 is a plan view showing a circuit breaker according to a second embodiment of the present invention. In the second embodiment, the end portion 23b of the second upper-side insulating beam body 23 adjacent to the side plate 2〇b located between the respective phases of the insulating housing 20 is passed to the first upper-side insulating beam. The body 21 is recessed on the side. The intermediate portion 22 2 b ' of the upper-side terminal conductor 22 is attached to the central portion 23a of the second upper-side insulating beam body 23, and is disposed from the intermediate portion 2 2 b to the main circuit junction side (not shown). The other end side 22c. According to the second embodiment, the end portion 23b of the upper-side insulating beam body 23 of the 帛2 adjacent to the side plate 2〇b located between the respective phases of the insulating housing 20 is recessed toward the first upper-side insulating beam body 21 side. Therefore, the insulation creeping distance can be further increased, and the insulation property can be further improved. In addition, as the distance between the insulation faces increases, the size of the insulating frame 20 can be reduced and the circuit breaker can be made smaller.苐3 Embodiment 〇 A third embodiment of the present invention will be described with reference to Figs. 6 and 7 . Fig. 6 is a perspective view showing an insulating frame structure of a circuit breaker according to a third embodiment of the present invention. Fig. 7 is a front elevational view showing the insulating casing structure of the circuit breaker according to the third embodiment of the present invention. In each of the figures, the insulating frame body 20a is a substrate of the insulating frame 20, 20b is a side plate of the insulating frame 20, 22 is an upper side terminal conductor, 22a is an end portion of the upper side terminal conductor, and 22b is an upper portion. The intermediate portion of the side terminal conductor 22c is the other end portion of the upper side terminal conductor 22, 24 is a lower side insulating beam body, and 25 is a partition plate. 321376 13 201042694 26 is a first upper side insulating beam body in which the upper end of the substrate 20a of the insulating housing 20 is spanned between the side plates 2b and 'the central portion 26a, for example, one end portion 22a of the plate-shaped upper side terminal guide 22 is attached. It is configured in a substantially trapezoidal shape. The first upper side insulating beam body 26 is exemplified as a structure in which the middle portion 2丨a protrudes upward from the both end portions 26b, and the upper surfaces of the both end portions 26A are arranged in an inclined shape. That is, the upper surface of the both end portions 26b is opened to be inclined from the central portion 26a toward the side plate 20b side of the insulating housing 20.
27係於絕緣框體20之側板20b上端且於u字狀開σ 端跨設於側板20b間’且於中央部27a安裝有從上部側端 子導體22之一端部22a延伸的上部侧端子導體22之中間 部22b的第2上部側絕緣樑體’其係構成為大致梯形狀。 第2上部側絕緣樑體27係於圖中例示為中夹部27a比兩端 部27b更往上方突出之構成’且兩端部27b之上表面係配 置為傾斜狀。亦即’兩端部27b之上表面係形成從中央部 27a往絕緣框體20之側板20b側降低的傾斜面 如上所述，於f 3實施形態中也可達到與前述第u 施形態相同的效果。此外，藉由將第丨上部侧絕緣標體26 及第2上部側絕緣樑體27作成為大致梯形狀，可增大該等 第1上部側絕緣樑體26及弟2上部侧絕緣樑體π之剛性， 並可使其強度、剛性比上述第1實施形態更加提昇。 第4實施形態 依據第8圖及第9圖說明本發明之第4實施形態。第 8圖為示有本發明第4實施形態之斷路器的絕緣框體構造 體的斜視圖。第9圖為示有本發明第4實施形態之斷路器 321376 14 201042694 的絕緣框體構造體的斜視圖。 ' 於該等各圖中，20為絕緣框體，20a為絕緣框體2〇之 基板，20b為絕緣框體2〇之側板，22為上部側端子導體， • 22a為上部側端子導體22之一端部，22b為上部側端子導 / 體22之中間部’ 22c為上部侧端子導體22之另一端部， 24為下部側絕緣樑體，25為分隔板。 28係於絕緣框體2〇之基板2〇a上端跨設於側板2肋 〇 間，為於中央部28a例如安裝有板狀上部侧端子導體22之 一端部22a的第1上部侧絕緣樑體，其係構成為段差狀。 第1上部側絕緣樑體28係於圖中例示為構成中央部28a比 兩端部28b更朝上方突出的段差階梯狀。 - 29係於絕緣框體20之侧板20b上端且於u字狀開口 •端跨設於侧板2牝間，為於中央部29a安裝有從上部^端 子導體22之一端部22a延伸出的上部側端子導體22之中 間部22b的第2上部侧絕緣樑體，其係構成為段差狀。第 Ο 2上部側絕緣樑體29係於圖中例示為構成中央部29a比兩 端部29b更朝上方突出的段差階梯狀。 如上所述，於前述第4實施形態中，也能謀求與前述 第1實施形態相同地提昇冷卻性能。另外，可以得到與前 述弟3貫施形態同樣地更加提昇強度、剛性的斷路哭。 弟5實施形態 依據第10圖對於本發明之第.5實施形態進行說明。第 10圖為示有本發明第5實施形態之斷路器的絕緣框體構造 體之斜視圖。 ^ 321376 15 201042694 於第10圖中，20為絕緣框體，20a為絕緣框體20之 ’ 基板，20b為絕緣框體20之側板，22為上部側端子導體， 22a為上部侧端子導體22之一端部，22b為上部側端子導 體22之中間部，22c為上部側端子導體22之另一端部， .24為下部侧絕緣樑體’ 25為分隔板。 30係於絕緣框體20之基板20a上端跨設於侧板2〇b 間，於中央部30a例如安裝有板狀上部侧端子導體22之一 ❹端部22a的第1上部側絕緣樑體，其係構成為段差狀。第 1上部侧絕緣樑體30於圖中係例示為中央部3〇a比兩端部 3〇b更往上方突出的段差狀之構成，且於該等兩端部別匕 係形成傾斜面。 31係於絕緣框體20之侧板2〇b上端且於u字狀開口 •端跨設於侧板2肋間，於中央部31a安裝有從上部側端子 導體22之一端部22a延伸的上部側端子導體22之中間部 22b的第2上部側絕緣樑體，其係構成為段差狀。第2上 〇部側絕緣樑體31係於圖中例示為中央部31a比兩端部31b 更往上方突起的段差狀之構成，並且於該等兩端部3沁形 成有傾斜面。 卜如上所述，於前述第5實施形態中，也可達到與前述 第4實施形態同樣的效果。此外，於前述第5實施形態中， 第1上部側絕緣樑體30及第2上部側絕緣樑體31之兩端 部30b及兩端部3ib係分別形成傾斜面，當因設置斷路器 之設備的結露而有水滴滴落在第丨上部側絕緣樑體3〇及第 2上部侧絕緣樑體31 i時，其將沿著第i上部側絕緣標體 321376 16 201042694 ' 30及第2上部側絕緣樑體31之兩端部30b及31b之傾斜 * 面流出而不會形成積水，故可以獲得不會因結露而導致絕 緣性能降低的高可靠性斷路器。 - 另外，有時會因斷路器周圍之環境而存有塵埃，但於 ， 此情形中，由於塵埃難以在第1上部側絕緣樑體30及第2 上部側絕緣樑體31之兩端部30b及31b之傾斜面堆積而沿 著該傾斜面流下而不會形成堆積，故可以獲得不會因塵埃 而導致絕緣性能降低的高可靠性斷路器。 ❹第6實施形態 依據第11圖及第12圖說明本發明之第6實施形態。 第11圖為示有本發明第6實施形態之斷路器的絕緣框體構 造體的斜視圖。第12圖為示有本發明第6實施形態之斷路 器的絕緣框體構造體的正面圖。 於該等各圖中，20為絕緣框體，20a為絕緣框體20之 基板，20b為絕緣框體20之側板，22為上部側端子導體， q 22a為上部側端子導體22之一端部，22b為上部側端子導 體22之中間部，22c為上部侧端子導體22之另一端部， 24為下部側絕緣樑體，25為分隔板。 32係於絕緣框體20之基板20a上端跨設於侧板20b 間，且於中央部32a例如安裝有板狀上部側端子導體22之 一端部22a的第1上部侧絕緣樑體，其係與兩端部32b構 成沒有段差的平面狀。 33係於絕緣框體20之侧板20b上端且於U字狀開口 端跨設於侧板20b間，為於中央部33a例如安裝有從上部 17 321376 201042694 側端子導體22之一端部22a延伸出的上部側端子導體22 • 之中間部22b的第2上部側絕緣樑體，其係與兩端部33b 構成沒有段差的平面狀。 _ 如上所述，於前述第6實施形態中，也能謀求與前述 , 第1實施形態相同地提昇冷卻性能。另外，可以得到與前 述第3實施形態同樣地更加提昇強度、剛性的斷路器。 第7實施形態 依據第13圖說明本發明之第7實施形態。第13圖為 ❹ 示有本發明第7實施形態之斷路器的平面爵。 於第7實施形態中，係使位於絕緣框體20之各相間的 側板20b相鄰接侧的第2上部侧絕緣樑體33之端部33b往 第1上部側絕緣樑體32側凹陷。於第2上部側絕緣樑體 33之中央部23a上安裝有上部側端子導體22之中間部 22b，且配置有從該中間部22b往未圖示的主電路接合點側 延伸的另一端側22c。但是，依據第7實施形態，使位於 q 絕緣框體20之各相間的側板20b相鄰接側的第2上部側絕 緣樑體33之端部33b往第1上部側絕緣樑體21側凹陷， 藉此，可更加增加絕緣沿面距離，而可更為提昇絕緣特性。 另外，隨著絕緣沿面距離更加增加同時也可實現絕緣框體 20之小型化和更使斷路器小形化。 第8實施形態 依據第14圖說明本發明之第8實施形態。第14圖為 示有本發明第8實施形態之斷路器的絕緣框體構造體之斜 視圖。 18 321376 201042694 於第14圖中，20為絕緣框體，20a為絕緣框體20之 ♦ 基板，20b為絕緣框體20之側板，22為上部側端子導體， 22a為上部側端子導體22之一端部，22b為上部側端子導 — 體22之中間部，22c為上部侧端子導體22之另一端部， . 24為下部側絕緣樑體，25為分隔板。 34係於絕緣框體20之基板20a上端跨設於側板20b 間，於中央部34a例如安裝有板狀上部側端子導體22之一 端部22a的第1上部側絕緣樑體，其係構成為與兩端部34b ^ 沒有段差的平面狀，且於該等兩端部34b係形成傾斜面。 35係於絕緣框體20之側板20b上端且於U字狀開口 端跨設於側板20b間，於中央部35a安裝有從上部側端子 導體22之一端部22a延伸的上部侧端子導體22之中間部 22b的第2上部側絕緣樑體，其係構成為與兩端部35b沒 ’ 有段差的平面狀，且於該等兩端部35b形成傾斜面。 如上所述，於此第8實施形態中，亦可以得到與前述 q 第6實施形態相同的效果。另外，於前述第8實施形態中， 第1上部側絕緣樑體34及第2上部側絕緣樑體35之兩端 部34b及兩端部35b係分別形成傾斜面，當因設置斷路器 之設備的結露而有水滴滴落在第1上部側絕緣樑體34及第 2上部側絕緣樑體35上時，由於沿著第1上部側絕緣樑體 34及第2上部側絕緣樑體35之兩端部34b及35b之傾斜 面流下而不會形成積水，故可以獲得不會因結露而導致絕 緣性能降低的高可靠性斷路器。 另外，有時會因斷路器周圍之環境而存有塵埃，但於 19 321376 201042694 此/f形中，由於塵埃難以在第】上部側絕緣樑體料及第$ 上。卩側絕緣樑體35之兩端部及35b之傾斜面罐積而將 :著該傾斜面流下而不會形成堆積，故可以獲得不會因塵 •埃而導致絕緣性能降低的高可靠性斷路器。 - 第9實施形態 依據第15圖說明本發明帛9實施形態。帛15圖為示 有本發明第9實施形態之斷路器的絕緣框體構造體的斜視 圖。 〇 ^ 於第15圖中，20為絕緣框體，2〇a為絕緣框體2〇之 基板，20b為絕緣框體20之側板，22為上部側端子導體， 22a為上部侧端子導體22之一端部，Mb為上部側端子導 體22之中間部’ 22c為上部側端子導體22之另一端部， 24為下部側絕緣樑體，25為分隔板。 36係於絕緣框體2G之基板2〇a上端跨設於側板2〇b 間，且為於中央部36a例如係安裝有板狀上部側端子導體 ◎ &之端部22a的第1上部侧絕緣樑體，中央部3“係構 成為比兩端部36b低之段差的溝狀部，且其中央部36a之 溝狀部的寬度係形成為可對應於因應上部側端子導體22 之額定電流而定的數種寬度的寬廣寬度。 37為於絕緣框體20之側板2〇b上端且於u字狀開口 端跨設於側板20b間’且為於中央部…安裝有從上部側 端子導體22之一端部22a延伸的上部侧端子導體22之中 間部22b#第2上部側絕緣樑體，中央部37 兩端部m低之段差的溝狀部，且其中央部37ambp 321376 20 201042694 • 的寬度係形成為可對應於因應上部侧端子導體22之額定 電流而定的數種寬度的寬廣寬度。 如上所述，於前述第9實施形態亦可達到與前述第6 . 實施形態同樣的效果。此外，於此第9實施形態中，第1 _ 上部側絕緣樑體36及第2上部側絕緣樑體37之中央部36a 及37a之溝寬度係形成寬廣寬度，而達到可對應額定電流 之容量而自由變化上部側端子導體22之寬度的效果。 第10實施形態 ❹ 依據第16圖說明本發明第10實施形態。第16圖係示 有本發明第10實施形態之斷路器的絕緣框體構造體之斜 視圖。 於第16圖中，20為絕緣框體，20a為絕緣框體20之 基板，20b為絕緣框體20之側板，22為上部侧端子導體， _ 22a為上部側端子導體之一端部，22b為上部側端子導體 22之中間部，22c為上部側端子導體22之另一端部，24 q 為下部側絕緣樑體，25為分隔板。 38係於絕緣框體20之基板20a上端跨設於侧板20b 間，為於中央部38a例如安裝有板狀上部側端子導體22之 一端部22a的第1上部側絕緣樑體，其中央部38a係構成 有比兩端部38b低之段差的溝狀部，並且其中央部38a之 溝狀部的寬度係形成為可對應由上部侧端子導體22之額 定電流而定之數種寬度的寬廣寬度。另外，於該等兩端部 38b係形成有傾斜面。 39係於絕緣框體20之側板20b上端且於U字狀開口 21 321376 201042694 • 端跨設於侧板20b間，為於中央部39a例如安裝有從上部 • 側端子導體22之一端部22a延伸出的上部側端子導體22 之中間部22b的第2上部侧絕緣樑體，其中央部39a係構 成有比兩端部39b低之段差的溝狀部，並且其中央部39a . 之溝狀部的寬度係形成為可對應由上部側端子導體22之 額定電流而定之數種寬度的寬廣寬度。另外，於該兩端部 3 9b係形成有傾斜面。 如上所述，於此第10實施形態中亦可達到與前述第9 ^ 實施形態相同的效果。另外，於此第10實施形態中，於第 1上部側絕緣樑體38及第2上部侧絕緣樑體39之兩端部 38b及39b係分別形成傾斜面，藉此當因設置斷路器之設 備的結露而有水滴滴落在第1上部側絕緣樑體38及第2上 部側絕緣樑體39上時，其將沿著第1上部側絕緣樑體38 及第2上部側絕緣樑體39之兩端部38b及39b之傾斜面流 下而不會形成積水，故可以獲得不會因結露而導致絕緣性 Q 能降低的高可靠性斷路器。 另外，有時會因斷路器周圍之環境而存有塵埃，但於 此情形中，由於塵埃難以在第1上部側絕緣樑體38及第2 上部側絕緣樑體39之兩端部38b及39b之傾斜面堆積而將 沿著該傾斜面流下而不會形成堆積，故可以獲得不會因塵 埃而導致絕緣性能降低的高可靠性斷路器。 (產業上之可利用性） 本發明係關於例如用於電力用之送配電設備或受電設 備的斷路器，其係適合於實現用簡單的構成即可提昇冷卻 22 321376 ❹27 is attached to the upper end of the side plate 20b of the insulating housing 20, and is disposed between the side plates 20b at the U-shaped opening σ end, and the upper side terminal conductor 22 extending from one end portion 22a of the upper-side terminal conductor 22 is attached to the central portion 27a. The second upper-side insulating beam body ' of the intermediate portion 22b is configured to have a substantially trapezoidal shape. The second upper-side insulating beam body 27 is exemplified as a configuration in which the middle-clamp portion 27a protrudes upward from the both end portions 27b, and the upper surfaces of the both end portions 27b are arranged in an inclined shape. That is, the inclined surface on the upper surface of the both end portions 27b from the central portion 27a toward the side plate 20b side of the insulating housing 20 is as described above, and in the embodiment of f3, the same configuration as in the above-described first embodiment can be achieved. effect. Further, by forming the second upper side insulating body 26 and the second upper side insulating beam body 27 into a substantially trapezoidal shape, the first upper side insulating beam body 26 and the second upper side insulating beam body π can be enlarged. The rigidity and rigidity of the first embodiment can be improved. Fourth Embodiment A fourth embodiment of the present invention will be described with reference to Figs. 8 and 9. Fig. 8 is a perspective view showing an insulating frame structure of the circuit breaker according to the fourth embodiment of the present invention. Figure 9 is a perspective view showing an insulating frame structure of a circuit breaker 321376 14 201042694 according to a fourth embodiment of the present invention. In each of the figures, 20 is an insulating frame, 20a is a substrate of the insulating frame 2, 20b is a side plate of the insulating frame 2, 22 is an upper terminal conductor, and 22a is an upper terminal conductor 22. The one end portion 22b is the intermediate portion '22c of the upper side terminal guide body 22', and the other end portion of the upper side terminal conductor 22, 24 is a lower side insulating beam body, and 25 is a partition plate. 28 is a first upper side insulating beam body in which the upper end of the substrate 2〇a of the insulating housing 2 is spanned between the ribs of the side plate 2, and the end portion 22a of one of the plate-shaped upper terminal conductors 22 is attached to the central portion 28a. The system is structured as a step. The first upper-side insulating beam body 28 is exemplified as a stepped step in which the center portion 28a protrudes upward from the both end portions 28b. - 29 is attached to the upper end of the side plate 20b of the insulating frame 20, and is disposed between the side plates 2A at the U-shaped opening/end, and is attached to the central portion 29a from the end portion 22a of the upper terminal conductor 22. The second upper-side insulating beam body of the intermediate portion 22b of the upper-side terminal conductor 22 is formed in a stepped shape. The second upper insulating beam body 29 is exemplified in the figure as a stepped step in which the central portion 29a protrudes upward from the both end portions 29b. As described above, in the fourth embodiment, the cooling performance can be improved in the same manner as in the first embodiment. Further, it is possible to obtain a disconnection crying which further enhances strength and rigidity in the same manner as the above-described third embodiment. The fifth embodiment of the present invention will be described with reference to Fig. 10. Fig. 10 is a perspective view showing an insulating frame structure of the circuit breaker according to the fifth embodiment of the present invention. ^ 321376 15 201042694 In Fig. 10, 20 is an insulating frame, 20a is a 'substrate of the insulating frame 20, 20b is a side plate of the insulating frame 20, 22 is an upper side terminal conductor, and 22a is an upper side terminal conductor 22. One end portion 22b is an intermediate portion of the upper side terminal conductor 22, 22c is the other end portion of the upper side terminal conductor 22, and .24 is a lower side insulating beam body '25 is a partition plate. 30 is disposed between the side plates 2〇b at the upper end of the substrate 20a of the insulating housing 20, and the first upper side insulating beam body of the one end portion 22a of the plate-shaped upper terminal conductor 22 is attached to the central portion 30a, for example. The system is configured in a step shape. The first upper side insulating beam body 30 is exemplified as a stepped portion in which the center portion 3〇a protrudes upward from the both end portions 3〇b, and an inclined surface is formed at the both end portions. 31 is attached to the upper end of the side plate 2〇b of the insulating housing 20, and is disposed between the ribs of the side plate 2 at the u-shaped opening and the end, and the upper side extending from one end 22a of the upper terminal conductor 22 is attached to the central portion 31a. The second upper-side insulating beam body of the intermediate portion 22b of the terminal conductor 22 is configured to have a stepped shape. The second upper side insulating beam body 31 is exemplified as a stepped portion in which the center portion 31a protrudes upward from the both end portions 31b, and an inclined surface is formed at the both end portions 3''. As described above, in the fifth embodiment described above, the same effects as those of the fourth embodiment can be obtained. Further, in the fifth embodiment, the both end portions 30b and the both end portions 3ib of the first upper-side insulating beam body 30 and the second upper-side insulating beam body 31 respectively form an inclined surface, and the device for providing a circuit breaker is provided. When the water droplets are dropped on the second upper side insulating beam body 3 and the second upper side insulating beam body 31 i, they will follow the i-th upper side insulating body 321376 16 201042694 ' 30 and the second upper side. The inclined surfaces of the both end portions 30b and 31b of the insulating beam body 31 flow out without forming water, so that a highly reliable circuit breaker which does not deteriorate in insulation performance due to dew condensation can be obtained. - In addition, dust may be present in the environment around the circuit breaker. However, in this case, it is difficult for dust to be present at both end portions 30b of the first upper insulating beam body 30 and the second upper insulating beam 31. The inclined surfaces of 31b and 31b are stacked and flow down along the inclined surface without depositing, so that a highly reliable circuit breaker which does not deteriorate in insulation performance due to dust can be obtained. [Embodiment 6] A sixth embodiment of the present invention will be described with reference to Figs. 11 and 12 . Figure 11 is a perspective view showing an insulating frame structure of a circuit breaker according to a sixth embodiment of the present invention. Fig. 12 is a front elevational view showing the insulating frame structure of the circuit breaker according to the sixth embodiment of the present invention. In these figures, 20 is an insulating frame, 20a is a substrate of the insulating frame 20, 20b is a side plate of the insulating frame 20, 22 is an upper terminal conductor, and q22a is an end of the upper terminal conductor 22. 22b is an intermediate portion of the upper-side terminal conductor 22, 22c is the other end portion of the upper-side terminal conductor 22, 24 is a lower-side insulating beam body, and 25 is a partition plate. 32 is a first upper-side insulating beam body which is disposed between the side plates 20b at the upper end of the substrate 20a of the insulating housing 20, and is attached to the central portion 32a, for example, at one end 22a of one of the plate-shaped upper terminal conductors 22. The both end portions 32b constitute a planar shape having no step. 33 is attached to the upper end of the side plate 20b of the insulating frame 20 and spans between the side plates 20b at the U-shaped open end. For example, the center portion 33a is attached to the end portion 22a of the terminal conductor 22 from the upper portion 321376201042694 side. The second upper side insulating beam body of the intermediate portion 22b of the upper side terminal conductor 22 is formed in a planar shape with no difference between the both end portions 33b. As described above, in the sixth embodiment, the cooling performance can be improved in the same manner as in the first embodiment described above. Further, it is possible to obtain a circuit breaker which is more excellent in strength and rigidity as in the third embodiment described above. (Seventh embodiment) A seventh embodiment of the present invention will be described with reference to Fig. 13. Fig. 13 is a plan view showing the circuit breaker of the seventh embodiment of the present invention. In the seventh embodiment, the end portion 33b of the second upper-side insulating beam body 33 adjacent to the side plate 20b located between the respective phases of the insulating frame body 20 is recessed toward the first upper-side insulating beam body 32 side. The intermediate portion 22b of the upper terminal conductor 22 is attached to the central portion 23a of the second upper insulating beam body 33, and the other end side 22c extending from the intermediate portion 22b to the main circuit junction side (not shown) is disposed. . According to the seventh embodiment, the end portion 33b of the second upper-side insulating beam body 33 adjacent to the side plate 20b located between the respective phases of the q-insulating housing 20 is recessed toward the first upper-side insulating beam body 21 side. Thereby, the insulation creeping distance can be further increased, and the insulation property can be further improved. In addition, as the distance between the insulation faces increases, the size of the insulating frame 20 can be reduced and the circuit breaker can be made smaller. Eighth Embodiment An eighth embodiment of the present invention will be described with reference to Fig. 14. Fig. 14 is a perspective view showing an insulating frame structure of the circuit breaker according to the eighth embodiment of the present invention. 18 321376 201042694 In Fig. 14, 20 is an insulating frame, 20a is a substrate of the insulating frame 20, 20b is a side plate of the insulating frame 20, 22 is an upper side terminal conductor, and 22a is one end of the upper side terminal conductor 22. The portion 22b is the intermediate portion of the upper-side terminal conductor 22, and the portion 22c is the other end portion of the upper-side terminal conductor 22. The 24 is a lower-side insulating beam body, and 25 is a partition plate. 34 is a first upper-side insulating beam body that is disposed between the side plates 20b at the upper end of the substrate 20a of the insulating housing 20, and is attached to the central portion 34a, for example, at one end portion 22a of one of the plate-shaped upper terminal conductors 22. The both end portions 34b^ have a flat shape without a step, and an inclined surface is formed at the both end portions 34b. 35 is attached to the upper end of the side plate 20b of the insulating frame 20 and spanned between the side plates 20b at the U-shaped open end, and the middle portion 35a is attached to the middle of the upper side terminal conductor 22 extending from one end portion 22a of the upper side terminal conductor 22. The second upper-side insulating beam body of the portion 22b is formed in a planar shape that is not in a step difference from the both end portions 35b, and an inclined surface is formed at the both end portions 35b. As described above, in the eighth embodiment, the same effects as those of the sixth embodiment described above can be obtained. Further, in the eighth embodiment, the both end portions 34b and the both end portions 35b of the first upper-side insulating beam body 34 and the second upper-side insulating beam body 35 are respectively formed as inclined surfaces, and the device for providing a circuit breaker is provided. When the water droplets are dropped on the first upper side insulating beam body 34 and the second upper side insulating beam body 35, the first upper side insulating beam body 34 and the second upper side insulating beam body 35 are two. Since the inclined surfaces of the end portions 34b and 35b flow down without forming water, a highly reliable circuit breaker which does not deteriorate in insulation performance due to dew condensation can be obtained. In addition, there may be dust due to the environment around the circuit breaker, but in the case of 19 321376 201042694, it is difficult for the dust to be on the upper side of the insulating material and the first. The both ends of the side insulating beam body 35 and the inclined surface of the 35b are stacked, and the inclined surface flows down without depositing, so that a highly reliable disconnection without deteriorating the insulation performance due to dust and dust can be obtained. Device. - Ninth Embodiment An embodiment of the present invention 9 will be described based on Fig. 15. Figure 15 is a perspective view showing an insulating frame structure of a circuit breaker according to a ninth embodiment of the present invention.第^ In Fig. 15, 20 is an insulating frame, 2〇a is a substrate of the insulating frame 2〇, 20b is a side plate of the insulating frame 20, 22 is an upper side terminal conductor, and 22a is an upper side terminal conductor 22. The one end portion, Mb is the intermediate portion '22c of the upper side terminal conductor 22, and the other end portion of the upper side terminal conductor 22, 24 is a lower side insulating beam body, and 25 is a partition plate. The 36 is placed between the side plates 2〇b at the upper end of the substrate 2〇a of the insulating housing 2G, and the first upper side of the end portion 22a of the plate-shaped upper terminal conductor ◎ is mounted on the central portion 36a, for example. In the insulating beam body, the central portion 3 is configured as a groove portion having a lower portion than the end portions 36b, and the width of the groove portion of the central portion 36a is formed to correspond to the rated current of the upper terminal conductor 22 The width of the plurality of widths is 37. The upper end of the side plate 2〇b of the insulating frame 20 is spanned between the side plates 20b at the u-shaped open end and the upper terminal conductor is mounted at the central portion. The intermediate portion 22b of the upper-side terminal conductor 22 extending at one end portion 22a is a second upper-side insulating beam body, and the groove portion of the central portion 37 having a lower end portion m is a lower portion, and the central portion thereof is 37ambp 321376 20 201042694 • The width is formed to correspond to a wide width of a plurality of widths depending on the rated current of the upper terminal conductor 22. As described above, the ninth embodiment can achieve the same effects as those of the sixth embodiment. Further, in the ninth embodiment, the first _ The groove widths of the center portions 36a and 37a of the portion-side insulating beam body 36 and the second upper-side insulating beam body 37 are formed to have a wide width, and the width of the upper-side terminal conductor 22 can be freely changed in accordance with the capacity of the rated current. 10th Embodiment FIG. 16 is a perspective view showing an insulating frame structure of a circuit breaker according to a tenth embodiment of the present invention. FIG. 16 is a perspective view of FIG. The insulating frame body 20a is a substrate of the insulating frame body 20, 20b is a side plate of the insulating frame body 20, 22 is an upper side terminal conductor, _22a is one end portion of the upper side terminal conductor, and 22b is an intermediate portion of the upper side terminal conductor 22. 22c is the other end of the upper-side terminal conductor 22, 24q is a lower-side insulating beam body, and 25 is a partitioning plate. 38 is attached to the upper end of the substrate 20a of the insulating frame 20 across the side plates 20b. The portion 38a is, for example, a first upper-side insulating beam body to which one end portion 22a of the plate-shaped upper-side terminal conductor 22 is attached, and a central portion 38a is formed with a groove portion having a lower step than the both end portions 38b, and a central portion 38a thereof is formed. The width of the groove is formed to be correct A wide width of a plurality of widths is determined by the rated current of the upper terminal conductor 22. Further, the both end portions 38b are formed with inclined surfaces. 39 is attached to the upper end of the side plate 20b of the insulating housing 20 and is U-shaped. Opening 21 321376 201042694 • The end is spanned between the side plates 20b, and the second upper side of the intermediate portion 22b of the upper-side terminal conductor 22 extending from one end portion 22a of the upper-side terminal conductor 22 is attached to the central portion 39a, for example. In the insulating beam body, the central portion 39a is formed with a groove portion having a lower step than the both end portions 39b, and the width of the groove portion of the central portion 39a is formed to correspond to the rated current of the upper side terminal conductor 22. And a wide width of several widths. Further, an inclined surface is formed on the both end portions 39b. As described above, in the tenth embodiment, the same effects as those of the ninth embodiment can be achieved. Further, in the tenth embodiment, the both end portions 38b and 39b of the first upper side insulating beam body 38 and the second upper side insulating beam body 39 are respectively formed with inclined surfaces, whereby the device for providing the circuit breaker is provided. When the water droplets are dropped on the first upper side insulating beam body 38 and the second upper side insulating beam body 39, the first upper side insulating beam body 38 and the second upper side insulating beam body 39 are along the condensation. Since the inclined surfaces of the both end portions 38b and 39b flow down without forming water, it is possible to obtain a highly reliable circuit breaker which does not cause a decrease in insulation Q energy due to dew condensation. In addition, dust may be present in the environment around the circuit breaker. However, in this case, it is difficult for dust to be present at both end portions 38b and 39b of the first upper side insulating beam body 38 and the second upper side insulating beam body 39. Since the inclined surface is deposited and flows down along the inclined surface without depositing, it is possible to obtain a highly reliable circuit breaker which does not deteriorate in insulation performance due to dust. (Industrial Applicability) The present invention relates to a circuit breaker for power transmission and distribution equipment or a power receiving apparatus, for example, which is suitable for achieving cooling with a simple configuration. 22 321376 ❹
G 201042694 性能的斷路器。 • 【圖式簡單說明】 第1圖係示有本發明第 -體構造體之斜視圖。 . 第2圖係示有本發明第 體構造體之正面圖。 第3圖係示有本發明第 體構造體之平面圖。 第4圖係示有本發明第 體構造體之側面圖。 第5圖係示有本發明第 體構造體之平面圖。 弟6圖係示有本發明第 體構造體之斜視圖。 第7圖係示有本發明第 體構造體之正面圖。 第8圖係示有本發明第 體構造體之斜視圖。 第9圖係示有本發明第 體構造體之正面圖。 第1 〇圖係示有本發明第 體構造體之斜視圖。 第11圖係示有本發明第 體構造體之斜視圖。 1實施形態之斷路器的絕緣框 1實施形態之斷路器的絕緣框 1實施形態之斷路器的絕緣框 1實施形態之斷路器的絕緣框 實施形態之斷路器的絕緣框 3實施形態之斷路器的絕緣框 3實施形態之斷路器的絕緣框 4實施形態之斷路器的絕緣框 4實施形態之斷路器的絕緣框 5實施形態之斷路器的絕緣框 6實施形態之斷路器的絕緣框 321376 23 201042694 第12圖係示有本發明第6 體構造體之平面圖。 第13圖係示有本發明第γ 體構造體之平面圖。 實施形態之斷路器的絕緣框 實施形態之斷路器的絕緣框 第14圖係示有本發明第 體構造體之斜視圖。 8實施形態之斷路器的絕緣框 實施形態之斷路器的絕緣框 第15圖係示有本發明第 體構造體之斜視圖。 Ο 弟16圖係不有本發明第〗〇每 乐仙貝施形態之斷路器的絕緣 框體構造體之斜視圖。 第17圖係示有習知斷路器的要部剖面側面圖。 / 18圖係示有從第17圖之箭號Α_Α方向觀看習知斷 路器的示圖。 第19圖係示有習知斷路器的平面圖。 【主要元件符號說明】G 201042694 Performance circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing a first body structure of the present invention. Fig. 2 is a front elevational view showing a first structural body of the present invention. Fig. 3 is a plan view showing the first structural body of the present invention. Fig. 4 is a side view showing the first structural body of the present invention. Fig. 5 is a plan view showing a first structural body of the present invention. Fig. 6 is a perspective view showing the first structural body of the present invention. Fig. 7 is a front view showing the first structural body of the present invention. Fig. 8 is a perspective view showing the first structural body of the present invention. Fig. 9 is a front view showing the first structural body of the present invention. Fig. 1 is a perspective view showing a first structural body of the present invention. Fig. 11 is a perspective view showing the first structural body of the present invention. Insulation frame 1 of the circuit breaker according to the embodiment 1 Insulation frame 1 of the circuit breaker according to the embodiment 1 Insulation frame of the circuit breaker according to the embodiment. Insulation frame 3 of the circuit breaker according to the embodiment Insulating frame 3 of the circuit breaker of the embodiment of the insulating frame 4 of the circuit breaker of the embodiment. Insulation frame 5 of the circuit breaker of the embodiment. Insulation frame 6 of the circuit breaker of the embodiment. Insulation frame of the circuit breaker of the embodiment 321376 23 201042694 Fig. 12 is a plan view showing a sixth body structure of the present invention. Figure 13 is a plan view showing the gamma body structure of the present invention. Insulation frame of the circuit breaker according to the embodiment. Insulation frame of the circuit breaker according to the embodiment. Fig. 14 is a perspective view showing the first structure body of the present invention. Insulation frame of the circuit breaker according to the embodiment. Insulation frame of the circuit breaker according to the embodiment Fig. 15 is a perspective view showing the body structure of the present invention. The brother 16 is a perspective view of the insulating frame structure of the circuit breaker of the present invention. Figure 17 is a cross-sectional side view showing the main part of a conventional circuit breaker. The /18 figure shows a view of the conventional circuit breaker viewed from the arrow Α_Α in Figure 17. Figure 19 is a plan view showing a conventional circuit breaker. [Main component symbol description]
2 ' 20 16、22 16a 16al 20 a 20b、23b 21 、 26 、 28 、 30 、 32 、 34 、 21a 、 23a 、 26a 、 29a 、 31a 、 真空閥 絕緣框體 上部側端子導體 平面狀部 突出部 基板 側板 3、38第1上部侧絕緣樑體 27a 、 27b 、 28a 、 30a 、 31a 、 321376 24 201042694 33a、34a、35a、36a 23b、26b、27b、28b 35b、36b、37b、38b 32a 21b 34b 22a 22b 22c 37a、38a、39a 中央部 29b 、 30b 、 31b 、 32b 、 33b 39b兩端部 端部 中間部 另一端部 23、27、29、31、33、35、37、39第2上部側絕緣樑體 ❹ 24 25 下部側絕緣樑體 分隔板 ❹ 25 3213762 ' 20 16 , 22 16a 16al 20 a 20b, 23b 21 , 26 , 28 , 30 , 32 , 34 , 21a , 23a , 26a , 29a , 31a , vacuum valve insulation frame upper side terminal conductor planar projection base Side plates 3, 38 first upper side insulating beam bodies 27a, 27b, 28a, 30a, 31a, 321376 24 201042694 33a, 34a, 35a, 36a 23b, 26b, 27b, 28b 35b, 36b, 37b, 38b 32a 21b 34b 22a 22b 22c 37a, 38a, 39a central portion 29b, 30b, 31b, 32b, 33b 39b, end portions, intermediate portions, other end portions 23, 27, 29, 31, 33, 35, 37, 39, second upper side insulating beam body ❹ 24 25 Lower side insulation beam partition plate ❹ 25 321376