201041003 六、發明說明： 【發明所屬之技術領域】 本發明係有關一種附電力保險絲的真空開閉器，尤其 有關一種保護真空開閉器的前面之面板（face plate)。 【先前技術】 以前面設置有保護蓋之以往的附電力保險絲的真空開 閉器而言，已知有如第4圖所示的高壓真空電磁接觸器。 如第4圖所示’於具有車輪之框體31安裝有絕緣框架％， 〇於絕緣框架32的内側配置有三相的真空斷電器（寫麵 interrUpler)33,於真空斷電器33的下方配置具備有驅動 用的電磁鐵與可動鐵心之電磁操作機構（未圖示）。此外， 於真空斷電器33的上方係對應各相配置有故障電流斷路 用的電力保險絲34。 於尚電壓的充電部所露出的電力保險絲34盥真*斷 電器33的前面設置有保護蓋35(相當於本發明的面板工)。 該保護蓋35係使-方的側部卡合至突設 ϋ卡合鎖36,並以兩根螺絲38將另一方的端部鎖緊;^ 至支撐在框體31的連接面板37(參照例如專利文獻υ。 專利文獻1:日本實開昭63_69331號公報（第4頁第工 圖） 【發明内容】 (發明所欲解決之課題） 用以保護真空開閉器的前面之保護蓋（以下稱為面板） 因應其目的係需要某種程度的強度，因此通常係採用金屬 321369 3 201041003 板。在專利文獻1所示之峰的高 整面被由金屬板所構成的面板覆=磁接觸益中，由於 .險絲前方部與面板之絕緣距離時，需；:=保電力保 的間隔尺寸，結果會有真空開閉距離以上 本發明乃為了解決上述問題點 =縮小電力保險絲的前方部與面板之間：:: ο (解決課題的手段） 本發明的真空開閉器係具有 點之真空斷電Μ” ^ 可動接 ^ 文王具二斷電态的各相的固金 接點側之複數個電力保險絲，並於前面部設置有=用= ^板，其中，㈣義、係，長度方向== ο ==Γ且從前面側觀看時朝橫方向排成::之 ==斷電器的上方，面板係於與電力保險絲的 ;方相對向之位置具錢向寬度_射向排列的電力 2險絲的最大寬度還寬且縱向寬度比電力保險 =之矩形狀的窗’於面板的背面安裝有用以封 = (發明之效果） =據本發日㈣真空_器，由於將與各相對應而設置 方=目電力保險絲以其長度方向朝向真空開閉器的前後 2電=前面側觀看朝橫方向排成一排之方式配置於真 二斷電_上方’並於與各電力保險絲的前方部相對向之 面板的位置具有橫向寬度比朝橫方向排列的電力保險絲的 321369 4 201041003 最大寬度還寬且縱向寬度比電力保險絲的直徑還大之矩形 狀的窗，且於面板的背面設置用以封住窗之絕緣板，因此 月Μ吏電力保險絲的前方部與面板之耐電壓性能提升，並能 實貝性地縮短電力保險絲與面板之間隔距離，而能謀求真 空開閉器的小型化。 【實施方式】 實施形態一 〇閉器 以下係依據第1圖及第2圖說明實施形態一的真空開 Ο 於搭載在台車1之絕緣框架2内以三相份之排列方式 配置有構成真空開閉器的主電路接點之真空斷電$ 3。如 第2圖所示，真空斷電器3係於真空容器内内建固定接點 4與JT動接點5 ’固定桿6係從較接點4導出至外部，可 動才干7係從可動接點5導出至外部。固定桿6的前端側係 連接至固定於絕緣框架2之固定側端子8，可動桿7的前 端側係經由絕緣桿9連結至一端固著於轉動軸1〇之横桿 11。此外’從真空容器所導出的可動桿7的中間部係經由 可撓導體連接至固定n緣框架2之可動側端子。該可 動側端子12亦與可動側主電路導體13連接，該可動側主 電路導體13的前端側係設置有與負載侧導體連接之接觸201041003 VI. Description of the Invention: [Technical Field] The present invention relates to a vacuum shutter with a power fuse, and more particularly to a front face plate for protecting a vacuum shutter. [Prior Art] A vacuum switch having a conventional electric fuse with a protective cover provided above is known as a high-pressure vacuum electromagnetic contactor as shown in Fig. 4. As shown in Fig. 4, 'the insulating frame % is attached to the frame body 31 having the wheel, and a three-phase vacuum breaker (write surface interrUpler) 33 is disposed inside the insulating frame 32, below the vacuum breaker 33. An electromagnetic operating mechanism (not shown) including an electromagnet for driving and a movable iron core is disposed. Further, above the vacuum breaker 33, a power fuse 34 for breaking the fault current is disposed corresponding to each phase. A protective cover 35 (corresponding to the panel worker of the present invention) is provided on the front surface of the power fuse 34 which is exposed to the charging portion of the voltage. The protective cover 35 is configured such that the side of the square is engaged with the protruding snap lock 36, and the other end is locked by two screws 38; to the connection panel 37 supported by the frame 31 (refer to For example, Japanese Patent Application Laid-Open No. SHO63-69331 (p. 4). [Problems to be Solved by the Invention] A protective cover for protecting the front side of a vacuum shutter (hereinafter referred to as For the panel), a certain degree of strength is required for the purpose. Therefore, a metal 321369 3 201041003 plate is usually used. The high surface of the peak shown in Patent Document 1 is covered by a metal plate. Because the insulation distance between the front part of the fuse and the panel is required;: = the interval size of the power protection, the result is that the vacuum opening and closing distance is above. The present invention is to solve the above problem = reducing the front part of the power fuse and the panel Between::: ο (Means for Solving the Problem) The vacuum switch of the present invention has a vacuum power-off of the point ^" ^ A movable power fuse of the solid-gold contact side of each phase of the movable state And set in the front Yes = use = ^ board, where, (four) meaning, system, length direction == ο ==Γ and when viewed from the front side, line up in the horizontal direction:: === above the breaker, the panel is tied to the power fuse The relative position of the square has the width to the width _ the power of the line 2 the maximum width of the line is also wide and the longitudinal width is larger than the electric safety = rectangular window is installed on the back of the panel to seal = (invention Effect) = According to the current day (4) vacuum _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 321369 4 201041003, which is disposed at the top of the true second power-off and at the position opposite to the front portion of each power fuse, has a lateral width wider than the horizontal direction. The maximum width is wider and the longitudinal width is wider than the power fuse. A rectangular window with a large diameter and an insulating plate for sealing the window on the back side of the panel, so that the voltage resistance of the front part of the moonlight power fuse and the panel is improved, and the power fuse can be shortened in a solid manner. versus The distance between the plates is reduced, and the vacuum switch can be miniaturized. [Embodiment] In the first embodiment, the vacuum opening of the first embodiment is described below based on the first and second drawings. In the frame 2, the vacuum disconnection of the main circuit contacts constituting the vacuum switch is arranged in a three-phase arrangement. As shown in Fig. 2, the vacuum breaker 3 is a built-in fixed contact in the vacuum container. 4 and JT moving contact 5 'fixing rod 6 is led out from the contact point 4 to the outside, and the movable rod 7 is led out from the movable joint 5 to the outside. The front end side of the fixing rod 6 is connected to the fixing fixed to the insulating frame 2 The side terminal 8 and the front end side of the movable lever 7 are connected to the cross bar 11 whose one end is fixed to the rotating shaft 1 via the insulating rod 9. Further, the intermediate portion of the movable rod 7 derived from the vacuum container is connected to the movable side terminal of the fixed n-edge frame 2 via a flexible conductor. The movable side terminal 12 is also connected to the movable side main circuit conductor 13, and the front end side of the movable side main circuit conductor 13 is provided with a contact with the load side conductor.
Us4所^融電路導體13顧蚊於台車1的支樓構 於之真空斷電器3的下方配置有具有可動鐵心16與電磁 之電磁操作機構。當藉由電磁鐵17吸引可動鐵心16 321369 5 201041003 時，轉動軸ίο轉動而連動地驅動槓桿u，該驅動力係 . ' =至絕緣桿9、可動桿7、以及可動接點5， ： 於真空斷電器3的上方以與三相的真空斷電器3的各 相對應之方式配置有電力保險絲18，該電力保險絲Μ係 用以在流通預定以上的電流時將電路予以斷路。如第^圖 所示各電力保險絲1 8的配置方向係以下述方式配置使 三個電力保險絲18相互並排，將該電力保險絲18的長产 方向朝真空開閉器的前後方向水平排列，且從前面側觀： 時三個電力保險絲18係朝橫方向排成一排。 於電力保險絲18的前面側的保險絲的軸心部具備 保=絲撞針（striker)18a。如第2圖中的虛線所示，，、保險 絲撞針18 a係在保險絲動作而溶斷時藉由彈菁而朝轴方向 突出而表示為熔斷之溶斷顯示裝置。當於保險絲撞針他 的前方設纽斷檢測裝置（未圖示）並檢測突出時，例如利 〇用於經由辅助繼電器將跳脫指令施加至真空開關器，但由 於並非是本發明的主要部分，故省略其詳細說明。 電力保險絲18係將設於其兩端部的保險絲蓋挪（端 子部）安裝於保險絲固持具19,並將保險絲固持具19固定 於通電部藉此而導電連接。如第2圖所示，前面側的保險 絲固持具19係經由固定於絕緣框架2側的連接導體2〇而 連接於固定側端子8。背面側的保險絲固持具19係缓由連 接導體21而連接於固定側主電路導體22。固定側 導體22係被支撐構件15所支撐，於固定側主電路導體a 321369 6 201041003 的前端部設置有與電源側導體連接之接觸子23。 障24。卜於各相的電力保險絲18的相間設置有絕緣阻 架2以而藉可由二栓:鎖緊構件26予以鎖固於台車1與絕緣框 絕•[加f拆卸之方式於真空開閉器的前面部(亦即 的前面部)設置有保護真空斷電器的前面之面 =露出二Γ薄鋼板所構成，用以覆蓋高電壓的充 ο 機槿m立 險絲18和真空斷電器3以及電磁操作 作#控制機器所露出的部分以保護該等露出的 口P刀並確保操作者的安全。 ，第1圖所不’面板25係於與各電力保險絲Μ的前 =相對向之位置形成矩形狀的窗❿，該窗❿係具有 ==方向的三相的電力保險絲18的最大寬度還寬 士、: 口見又’並具有比電力保險絲Μ的直徑（保險絲蓋18b 烕為最大直徑）還寬的縱向寬度。 ❹ μ接者，以封住面板25的窗部祝並覆蓋電力保險絲 ’上面的-部分之方式，藉由螺检或螺絲等鎖緊構件烈 將絕緣板27鎖固於面板25的背面。如第3圖所示，絕緣 板27係使用透明或半透明的絕緣板材（例如屢克力板）將 剖面彎曲成L狀而形成。形成為[狀之上面側雖為覆蓋電 力保險絲18的上面的一部分之部分，但亦可作成為兩側面 同樣彎曲成L狀並覆蓋電力保險絲18的侧面的一部分。 此外，至此所說明的真空開閉器的構成（尤其是電磁操 作機構部的構成）示為一例，並未限定於附圖的構成。只要 321369 7 201041003 為下述的真空開閉器即可，亦即：於中央部具有真空斷電 器3，於真空斷電器3的下方配置操作機構，於上方具備 有電力保險絲18 ’於前面側設置有保險絲板25。 針對上述構成的面板2 5與絕緣板2 7的作用進行說明。 電力保險絲18的保險絲蓋18b係露出的高壓充電部。另一 方面，金屬製的面板25係接地部。因此，由於電力保險絲 18的前面側的保險絲蓋18b與面板25之間成為耐電壓觀 點上耐電壓最弱點的部分，因此為了獲得需要的耐電壓性 能並須確保預定的絕緣距離。 因此，在本申請案的實施形態一的真空開閉器中，於 與電力保險絲18的前方部相對向的面板25的位置予以開 口形成窗25a，實質性地加長兩者間的絕緣距離，並以絕 緣板27封住開口部。如此，能提升耐電壓性能。換言之， 只要為與無窗25a的情形相同的耐電壓性能，即能縮短電 力保險絲18與面板25的間隔距離。 ^ 第2圖係更詳細地說明。將從保險絲蓋18b的端部至 窗25a的開口緣之距離設為D，將從保險絲蓋⑽的前面 至面板25的最小距離（軸方向距離）設為d。在無窗—的 情=中需要將d尺寸作成必要的絕緣距離予以讀保，而在 25a的情形中只要將D尺寸作成必要的絕緣距離即 可亦即，藉由設置窗25a，能將保險絲蓋18b盥面板25 :間隔距離縮小至（D — d)。結果，可將真空開閉器予 型化。 此外’將絕緣板作成透明或半透明，藉此在附有保險 321369 8 201041003 :=:S力保險絲18的情形中，可透過窗25a目視 U呆險絲熔斷且保險絲撞針18a突出之動作。因此，即 使不設置保險絲的動作檢财段亦可料地知道保險絲的 此外，在非為附有保險絲撞針的電力保險絲之情形中， 無須將絕緣板27作成翻或半㈣，㈣ 絕緣板27。 如上所述，依據實施形 ❹ 〇 v /、工明闭态，由於將對 應各相而設⑽複數简力鎌絲以其長度方向朝向直* 開閉器的前後方向且從前面側觀看朝橫方向排成—排之方 式配置於真空斷電器的上方，於與各電力保險絲的前方部 相對向之面板的位置形成橫向寬纽在橫方向制的電力 :險絲的最大寬度還寬且縱向寬度比電力保險絲的直徑還 兌之矩形狀的窗，並於面板的背面安裝用以封住窗之絕緣 板’因此能提升電力保險絲的前方部與面板的耐電壓性能， 並能實質性地縮短電力紐絲與面板的間隔距離，而能謀 求真空開閉器的小型化v '、 此外，由於電力保險絲係具有表示熔斷之保險絲撞針， 且絕緣板作成透明或半制，因此在具财时保險絲撞 2的電力保險絲之情形中，除了上述效果之外，還可透過 窗目視確認保險絲熔斷且保險絲撞針突出之動作，而容易 進行電力保險絲的動作確認。 【圖式簡單說明】 第1圖係本發明實施形態一的真空開閉器之正面圖。 321369 9 201041003 第2圖係第1圖的真空開閉器的側面圖。 第3圖係安裝至第〗圖的真空開閉器的面板之絕緣板。 第4圖係以往之具備有面板的真空電磁接觸器。 【主要元件符號說明】 台車 2 絕緣框架 真空斷電器 4 固定接點 可動接點 6 固定桿 可動捍 8 固定側端子 絕緣桿 10 轉動軸 横桿 可動侧主電路導體 12 可動側端子 1 3 5 7 Ο 9 11 13 14、23 接觸子 16 可動鐵心 18 電力保險絲 18b 保險絲蓋 20、21 連接導體 24 絕緣阻障 25a 窗 27 絕緣板 15 支撐構件 電磁鐵 保險絲撞針 19 保險絲固持具 22 固定侧主電路導體 25 面板 26、28鎖緊構件 321369 10The Us4 circuit fuse 13 is disposed below the vacuum breaker 3 of the branch of the trolley 1 with an electromagnetic operating mechanism having a movable core 16 and electromagnetic. When the movable iron core 16 is attracted to the movable iron core 16 321369 5 201041003 by the electromagnet 17, the rotating shaft ίο rotates to drive the lever u in conjunction with the driving force. ' = to the insulating rod 9, the movable rod 7, and the movable contact 5, : Above the vacuum breaker 3, a power fuse 18 is disposed in correspondence with each of the three-phase vacuum breakers 3, and the power fuse is used to disconnect the circuit when a predetermined current is supplied. As shown in the figure, the arrangement direction of each of the power fuses 18 is arranged such that the three power fuses 18 are arranged side by side, and the long-life direction of the power fuses 18 is horizontally arranged in the front-rear direction of the vacuum shutter, and from the front. Side view: The three power fuses 18 are arranged in a row in the horizontal direction. The shaft center portion of the fuse on the front side of the power fuse 18 is provided with a retainer/striker 18a. As shown by the broken line in Fig. 2, the fuse striker 18a is a fuse-dissolving display device that protrudes in the axial direction by the elastic crystal when the fuse is operated and is melted. When a fuse detecting device (not shown) is provided in front of the fuse striker and the protrusion is detected, for example, the profit is applied to the vacuum switch via the auxiliary relay, but since it is not an essential part of the present invention, Therefore, detailed description thereof will be omitted. In the electric fuse 18, the fuse cover (terminal portion) provided at both end portions is attached to the fuse holder 19, and the fuse holder 19 is fixed to the energizing portion to be electrically connected. As shown in Fig. 2, the front fuse holder 19 is connected to the fixed side terminal 8 via a connecting conductor 2A fixed to the side of the insulating frame 2. The fuse holder 19 on the back side is connected to the fixed side main circuit conductor 22 by the connection conductor 21. The fixed side conductor 22 is supported by the support member 15, and a contact portion 23 connected to the power supply side conductor is provided at the front end portion of the fixed side main circuit conductor a 321369 6 201041003. Barrier 24. The phase of the power fuse 18 of each phase is provided with an insulating frame 2 so as to be locked by the two bolts: the locking member 26 to the trolley 1 and the insulating frame. [Adding f to the front of the vacuum shutter The front part (that is, the front part) is provided with a front surface for protecting the vacuum interrupter = an exposed two-layer steel sheet for covering the high voltage and the vacuum breaker 18 and the vacuum breaker 3 The electromagnetic operation is used to control the exposed portion of the machine to protect the exposed port P-knife and to ensure operator safety. In the first figure, the panel 25 is formed in a rectangular window with respect to the front/rear position of each of the power fuses, and the window has a maximum width of three-phase power fuses 18 having a == direction. , : See and see 'and have a wider longitudinal width than the diameter of the power fuse ( (fuse cover 18b 烕 is the largest diameter). The 接 μ connector is used to seal the window portion of the panel 25 and cover the upper portion of the power fuse ‘, and the insulating plate 27 is firmly locked to the back surface of the panel 25 by a screwing member such as a screw or a locking member. As shown in Fig. 3, the insulating sheet 27 is formed by bending a cross section into an L shape using a transparent or translucent insulating sheet (for example, a acryl plate). Although the upper side of the shape is formed to cover a part of the upper surface of the electric fuse 18, it may be a part of the side surface which is bent in an L shape and covers the electric fuse 18 on both side surfaces. Further, the configuration of the vacuum shutter described above (especially the configuration of the electromagnetic operating mechanism portion) is shown as an example, and is not limited to the configuration of the drawings. As long as 321369 7 201041003 is a vacuum switch as described below, that is, a vacuum breaker 3 is provided at the center, an operating mechanism is disposed below the vacuum breaker 3, and a power fuse 18' is provided on the front side. A fuse board 25 is provided. The operation of the panel 25 and the insulating plate 27 having the above configuration will be described. The fuse cover 18b of the power fuse 18 is a high-voltage charging portion that is exposed. On the other hand, the metal panel 25 is a grounding portion. Therefore, since the fuse cover 18b on the front side of the power fuse 18 and the panel 25 become the weakest point of the withstand voltage at the withstand voltage point, a predetermined insulation distance must be secured in order to obtain the required withstand voltage performance. Therefore, in the vacuum shutter according to the first embodiment of the present application, the window 25a is opened at the position of the panel 25 facing the front portion of the power fuse 18, and the insulation distance between the two is substantially lengthened. The insulating plate 27 seals the opening. In this way, the withstand voltage performance can be improved. In other words, the distance between the electric fuse 18 and the panel 25 can be shortened as long as the same withstand voltage performance as in the case of no window 25a. ^ Figure 2 is explained in more detail. The distance from the end of the fuse cover 18b to the opening edge of the window 25a is set to D, and the minimum distance (axial direction distance) from the front surface of the fuse cover (10) to the panel 25 is set to d. In the case of no window, it is necessary to read the d dimension to the necessary insulation distance, and in the case of 25a, the D dimension can be made to have the necessary insulation distance, that is, by providing the window 25a, the fuse can be provided. Cover 18b 盥 panel 25: The separation distance is reduced to (D - d). As a result, the vacuum shutter can be pre-formed. Further, the insulating plate is made transparent or translucent, whereby in the case where the fuse 321369 8 201041003 :=:S force fuse 18 is attached, the action of the U-failed wire being blown through the window 25a and the fuse striker 18a is protruded. Therefore, even if the fuse is not provided, the fuse can be known. In addition, in the case of a power fuse not having a fuse striker, the insulating plate 27 is not required to be turned over or half (four), and (4) the insulating plate 27. As described above, according to the embodiment of the shape ❹ / v /, the work is closed, since (10) the plurality of simple force wires are arranged in the longitudinal direction thereof toward the front-rear direction of the straight-opener and from the front side to the horizontal direction. Arranged in a row-displacement manner above the vacuum breaker, forming a lateral wide-angle in the lateral direction at a position opposite to the front portion of each power fuse: the maximum width of the dangerous wire is also wide and the longitudinal width A rectangular window is added to the diameter of the power fuse, and an insulating plate for sealing the window is mounted on the back side of the panel. Therefore, the voltage resistance of the front portion of the power fuse and the panel can be improved, and the power can be substantially shortened. The distance between the wire and the panel is reduced, and the vacuum switch can be miniaturized. In addition, since the power fuse has a fuse striker indicating that the fuse is blown, and the insulating plate is made transparent or semi-system, the fuse is bumped when it is rich. In the case of the power fuse, in addition to the above effects, it is also easy to perform electricity by visually confirming that the fuse is blown and the fuse strikes the needle through the window. Fuse operation check. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a front elevational view showing a vacuum shutter according to a first embodiment of the present invention. 321369 9 201041003 Fig. 2 is a side view of the vacuum shutter of Fig. 1. Figure 3 is an insulating plate of the panel of the vacuum shutter mounted to the drawing. Fig. 4 is a conventional vacuum electromagnetic contactor having a panel. [Main component symbol description] Pallet 2 Insulation frame vacuum breaker 4 Fixed contact movable contact 6 Fixed lever movable 捍 8 Fixed side terminal insulation rod 10 Rotary shaft crossbar movable side main circuit conductor 12 Movable side terminal 1 3 5 7 Ο 9 11 13 14, 23 Contactor 16 Movable iron core 18 Power fuse 18b Fuse cover 20, 21 Connecting conductor 24 Insulation barrier 25a Window 27 Insulation board 15 Support member Electromagnet fuse striker 19 Fuse holder 22 Fixed side main circuit conductor 25 Panel 26, 28 locking member 321369 10