經 濟 部 智 慧 員 A? 五、發明說明（工 [發明所屬技術領域] 本發明係有關用以 器，尤^斷過大電流之多極氣動電路斷路 尤其是可以確保閱閂从 [習知夕斗/ 閉接點部分之短時間通電容量。 之技術] 氣動：5圖係例如曰本特開平6,965°號公報所示習知之 虱動電路斷路器之|匈^ ^ ^ 路斷路哭門門接❹ 剖面圖，第6圖係習知之氣動電 之氣動要部立體圖，第7圖係裝設在習知 路器開閉接點部周圍之磁性構件配置圖。 知由？係氣動電路斷路器的外殼箱體，2係眾所周 •、即連桿構成之開閉機構。因為這種氣動電路斷路器 而要很大的切入力，因此剎 驅動棘輪2b Μ 此利用充電把手以或未圖示之馬達 偏心凸輪2c，再藉由蓄勢在切入彈菩2d之 泮頁力切入。 在開閉機構2的下部連桿2e隔著連結_ 3連設】接觸臂 4 ’該接㈣4係藉由接觸制5以可轉動方式軸支。“ 可動接觸子’一端固接可動接點6a，另一端連接層疊薄板 導體的撓性導體7。撓性遙栌7夕奴*/ 撓^導體7之終端係連接在下侧端子 8,撓性導體7係從下側端子8的連接位置以大約u字形 成形配置。裝設在可動接觸子6的中央附近之支點孔的， 和在接觸臂4的支持孔插通可動接觸子銷6c且可搖動地支 持可動接觸子6。9係上側端子，一端裝設可與可動接點 6a接觸分離的固定接點9a。1〇係壓接彈簧，朝向張開撓 性導體7的U字形方向彈麼與可動接觸子6之連接部。該 I彈愿力係將可動接觸子銷6c當作槓桿支點使可動接觸子6 本紙張&度適用中國國家標準（CNS)A4規格（21〇 χ 297公釐） 1 312913 裝--------訂--------·線 (請先閱讀背面之注意事項再填寫本頁) 五、發明說明、2 在圖上以順時針方向動 之壓接力。11伤 田可動接點6a對固定接點92 1糸電流斷路眭# π人 弧裝置。12 #似“ 呀4除在接點間發生的電弧之消 保配設在各極相 配設用以覆蓋撓性導體7曰=磁性板。該磁性板η係 流通電時，成為 U字形側部，於後述之過大電 磁路。 ' 、抑制可動接點6a浮起之電磁力的 接著說明習知之 時之接點屢入動作。電路斷路器發生斷開動作之電流 動作之電流通過時，通;;動:：斷路器有過大的發生斷開 點h的可動接點6 a會/由電:/ * 1 0被推屡到固定接 電流係通過撓性導_ 1因為該過大 規體7,即使撓性導體7之 開ϋ字形方向動作 私磁力朝向張 k過過大電流亦不會引起 使接點間發生電弧，祐μ 點子起，不 ^ 罨弧使短時間通電容量增大。 但是’如此之氣動電路斷路器在 生斷開動作之電流係3相交流，同時通過3== 配設在相間的磁性板12，有偏離12。度相位的 ： 過。因此’隔斷電流變大時，在和電流的鄰接極同相域中通 磁性板U磁性飽和，又在逆相域中磁通抵消，而張開於性 導體7的U字形之電磁力淡㈣接力）不會變μ⑸ 的增加大，固定接點9a和可動接點6a間的打開電磁2 力較大，則接點易於浮起。因此即使磁性板丨2的板厚增 亦不會獲得預期的防止接點浮起之效果。 > 另外’因為磁性板12僅配設到撓性導體7之周邊一 動接觸子6受鄰接極之磁界影響，藉由與自 、㈡馊€流之電局 A? 五、發明說明（A wise man from the Ministry of Economic Affairs A. V. Description of the invention [Technical field of the invention] The present invention relates to a device, especially a multi-pole pneumatic circuit that breaks an excessively large current. In particular, it can ensure that the reading latch is disconnected from [习 知 夕 斗 / The short-time energizing capacity of the closed contact part. Technology] Pneumatic: Figure 5 is an example of a conventional lice-operating circuit breaker shown in Japanese Patent Publication No. 6,965 ° | Hungarian ^ ^ ^ Figure, Figure 6 is a perspective view of the pneumatic main part of the conventional pneumatic electric, and Figure 7 is a layout diagram of the magnetic components installed around the opening and closing contact part of the conventional circuit device. , 2 is a public mechanism, which is the opening and closing mechanism composed of connecting rods. Because this pneumatic circuit breaker requires a large cutting force, the brake-driven ratchet 2b Μ uses an eccentric cam with a charging handle or a motor (not shown). 2c, and then cut it by the force of the cutting force of the cut-in bomb 2d. The lower link 2e of the opening and closing mechanism 2 is connected via the connection _ 3] The contact arm 4 ′ The connection 4 is made by the contact system 5 Rotary way shaft support. "Movable contactor 'One The movable contact 6a is fixedly connected, and the other end is connected to the flexible conductor 7 of the laminated thin plate conductor. The terminal of the flexible remote conductor 7 / is connected to the lower terminal 8 and the flexible conductor 7 is connected from the lower terminal. The connection position of 8 is approximately U-shaped. The fulcrum hole provided near the center of the movable contactor 6 is inserted into the support hole of the contact arm 4 and the movable contactor pin 6c is inserted to support the movable contactor 6 in a swingable manner. 9 series of upper terminals, one end is provided with a fixed contact 9a which can be separated from the movable contact 6a. 10 series of crimp springs are connected to the U-shaped direction of the flexible conductor 7 to connect with the movable contact 6 The I-willing force is to use the movable contact pin 6c as a lever fulcrum to make the movable contact 6 the paper & degree is applicable to China National Standard (CNS) A4 specification (21〇χ 297 mm) 1 312913 Pack- ------ Order -------- ・ Thread (please read the precautions on the back before filling out this page) 5. Description of the invention, 2 Pressing force in clockwise direction on the drawing. 11 Injuries Tian movable contact 6a vs. fixed contact 92 1 糸 Current cut-off 人 # π person arc device. 12 #It looks like "Yeah 4 division occurs between contacts The arc protection is arranged at each pole to cover the flexible conductor 7 = magnetic plate. This magnetic plate η is a U-shaped side portion when electricity is flowing, and an excessively large electromagnetic circuit will be described later. The following description of the electromagnetic force floating at point 6a indicates that the contact repeatedly enters the action at the time of acquaintance. The current of the circuit breaker when the opening action occurs is passed when the current passes; The movable contact 6 of h will be / by electricity: / * 1 0 is repeatedly pushed to the fixed connection. The current is passed through the flexible conductor _ 1 because of the excessively large gauge body 7, even if the flexible conductor 7 moves in the direction of the zigzag shape. Private magnetic force. Excessive currents toward Zhang k will not cause an arc to occur between the contacts. From the beginning of the μμ, the arc will increase the short-term power-on capacity. However, the current of the circuit breaker in such a way is a 3-phase alternating current, and at the same time, the magnetic plate 12 disposed between the phases is deviated by 3 ==. Degree of phase: Off. Therefore, when the cutoff current becomes large, the magnetic plate U magnetically saturates in the same phase domain as the adjacent pole of the current, and the magnetic flux cancels in the reverse phase domain, and the U-shaped electromagnetic force spreading on the sexual conductor 7 is weak. ) The increase does not become larger than μ⑸. The opening electromagnetic force 2 between the fixed contact 9a and the movable contact 6a is large, and the contact is easy to float. Therefore, even if the thickness of the magnetic plate 2 is increased, the expected effect of preventing the contact from floating cannot be obtained. > In addition, 'Because the magnetic plate 12 is provided only to the periphery of the flexible conductor 7, the movable contactor 6 is affected by the magnetic field of the adjacent poles.
力接受朝向横方向之力量。S 點6a朝向橫方向動作，而在朝向横方向之力量使可動接 由於接點表面損傷，有:固定接點％之間發生電弧， 本發明係為了解決相關電容量不會上升的問題。 獲得即使發生斷開動 而研創者，其目的在於可 通影響，壓制固定接& Q 亦可抑制鄰接極之磁 點之橫向偏離，使接點面；：以可發動 = 點6a之浮起，抑制接 高的氣動電路斷路器。。弧之短時間通電容量 [發明概述] 有關本發明之氣動電路斷路器係 朝可開閉具有開閉接點中的可動接點:可動： = 訂 方向彎曲，而變形成大約” 接觸子的開閉 土 、 支軸，具有將因通雷雷 生的撓性導體向㈣形部開口方向之電 換 線 接力的槓桿作用；和用以強化㈣在挽性Ϊ 體之υ子形侧面極間之電磁力的磁性板並列配設複數片， 並使其間存在有磁空隙。 另外，將各極間之磁性板從換性導體U字形侧面延伸 到開閉接點的側部。 然後，在用以絕緣隔離多極開閉接點的相間隔壁上穿 設形成有隔著相當於磁空隙的間隔之插入槽，而磁性板即 插入配設於插入槽中。 又，磁性板進一步分割成配置在撓性導體之U字形側 面之磁性板；和隔磁板，含有可動接觸子之開閉接點部， 並在相間隔壁上分別設置其各自的插入槽。 ^紙張尺度適用中國國家標準（CNS)A4規格（210 Χ 297公釐) -—-- 3 312913 經濟部智慧財產局員工消費合作社印製 磁通消除減輕，故打開撓性導體7 之U字形的電磁力（接 517257 A7 一__B7 五、發明說明（4 ) 再者，各磁性板及各隔磁板係以磁性薄板之層疊體構 成。 [發明之實施形態] 實施形態1. 第1圖係本發明實施形態1之氣動電路斷路圖之要部 縱剖面圖，第2圖係將實施形態1之磁性板安裝配設到箱 體之說明圖。 圖中，1至11係與上述習知之裝置之說明相同者，省 略說明。13係磁性板，配置在撓性導體7的u字形側部。 該磁性板13係於由複數片配設在多極開閉部之各極 間所構成之板間，且於板間具有磁空隙13a。 如第2圖所示，磁性板13係以插入裝設在以形成氣動 電路斷路器之外殼箱體1之絕緣樹脂所成形之箱體，即基 座之相間隔壁la的插入槽lb，藉此裝設在所定位置。插 入槽lb係為確保磁空隙13a而平行地安裝，而將基座成形 材的絕緣性樹脂材之相間隔壁la之中央部作為磁空隙 而並列設置複數片之磁性板13。 在如此構成之氣動電路斷路器，奴 研格15經由自極電流之磁通 和經由鄰接電流係磁通之磁空隙〗八认 二1糸13a分離，而即使根據複 數之磁性板13為每極有相位差之雷法 心电机，但由於磁性飽和、 點壓接力）易於依照電流大小增加，可々▲ 曰加，可抑制因為接點間之電 磁反彈造成的接點浮起。 因此，過大電流通電時接馱逡 _ 雖點，予起會消除，故可增大短 本紙張尺度適用中國國家標準（CNS)A4規格（210 4 312913 --------訂·-------r I (請先閱讀背面之注意事項再填寫本頁) 經 濟 部 智 慧 財 產 局 員 工 消 費 合 -作 社 •印 製 5 517257 五、發明說明（ 時間通電容量。 實施形態2. 板二圖係袭設在實施形態2的開閉接點部周圍之磁性 圖中小6至9係與上述實施形態1相同之物。 ”數片磁性板。該實施形態2中，係各磁性板14從 =體，之U字形側部延伸到開閉接點側部。複數之磁 係'插入存在有設於相間隔# la的磁空隙13a且並 1裝設的插入槽（未標示符號）而安裝配置。 如此藉由磁性板14延伸配設至含有可動接觸子6之開 側部，而由於磁性板14係隔斷鄰接極電流而產生的 ==，故可動接觸子6藉由自已的電流和鄰接極環繞 磁通的電磁力，防止發生橫向偏離。 ，而’除了抑制上述實施形態i說明的增加打開挽性 之U字形的電磁力(接點壓接力)而產生的接點浮起 =外，亦抑制可動接觸子6的橫向偏離，當然可以增大短 時間通電容量。 實施形態3. 第4圖係裝設在實施形態3之開閉接點部周圍之磁性 板配置圖。圖中小6至9、13係與上述實施形態"目同 之物。15係隔磁板，與磁性板13分別在可動接觸子6及 可動接點6a和固定接點9a的接點開閉部之側部，配設在 各極相間。磁性板13和隔磁板15之間形成補強部bForces receive forces in the lateral direction. The S point 6a moves in the horizontal direction, and the movable contact is caused by the force in the horizontal direction. The contact surface is damaged, and an arc occurs between the fixed contacts%. The present invention is to solve the problem that the related capacitance does not increase. To obtain a researcher even if a disconnection occurs, the purpose is to influence the impact, suppressing the fixed connection & Q can also suppress the lateral deviation of the magnetic point of the adjacent pole, so that the contact surface; , Suppress the connection of high pneumatic circuit breakers. . Arc short-time energizing capacity [Overview of the invention] The pneumatic circuit breaker of the present invention has movable contacts among openable and closable contacts that can be opened and closed: movable: = bent in a predetermined direction, and becomes approximately "contactor's opening and closing soil, The fulcrum has the lever effect of relaying the electrical conductors of the flexible conductor caused by the thunder and lightning to the opening of the ㈣; and to strengthen the electromagnetic force between the poles of the υ sub-shaped side of the Ϊ A plurality of magnetic plates are arranged in parallel with a magnetic gap therebetween. In addition, the magnetic plates between the poles are extended from the U-shaped side of the transversal conductor to the side of the opening and closing contact. Then, multiple poles are used for insulation and isolation. An insertion groove is formed in the phase separation wall of the opening and closing contact through a gap corresponding to a magnetic gap, and the magnetic plate is inserted and arranged in the insertion groove. The magnetic plate is further divided into a U-shape arranged on the flexible conductor. The magnetic plate on the side; and the magnetic isolation plate, which contains the opening and closing contact parts of the movable contactor, and each of them has its own insertion slot on the phase separation wall. ^ The paper size applies the Chinese National Standard (CNS) A4 specification (210 Χ 297mm) ----- 3 312913 The magnetic flux printed by the consumer cooperative of employees of the Intellectual Property Bureau of the Ministry of Economic Affairs has been reduced, so the U-shaped electromagnetic force of the flexible conductor 7 is turned on (connected to 517257 A7 __B7 V. Description of the invention ( 4) Furthermore, each magnetic plate and each magnetically shielded plate are constituted by a laminated body of a magnetic thin plate. [Embodiment of the invention] Embodiment 1. Fig. 1 is a longitudinal view of a main part of a pneumatic circuit circuit diagram of Embodiment 1 of the present invention. Sectional view, Fig. 2 is an explanatory view of mounting and disposing the magnetic plate of the first embodiment to the box. In the figure, 1 to 11 are the same as those of the conventional device described above, and the description is omitted. 13 series of magnetic plates, arrangement The U-shaped side portion of the flexible conductor 7. The magnetic plate 13 is formed between a plurality of plates arranged between the poles of the multi-pole opening and closing portion, and has a magnetic gap 13a between the plates. As shown in FIG. 2 As shown, the magnetic plate 13 is a box formed by inserting an insulating resin installed in the casing 1 of the pneumatic circuit breaker to form a pneumatic circuit breaker, that is, an insertion groove lb of a phase partition wall la of a base, thereby being installed in a predetermined position. Position. The insertion slot lb is installed in parallel to ensure the magnetic gap 13a. A plurality of magnetic plates 13 are arranged side by side at the central portion of the insulating resin material of the base molding material as a magnetic gap. In the pneumatic circuit breaker configured in this way, the Nuken grid 15 passes the magnetic flux of the self-polar current. It is separated from the magnetic gap through the adjacent current system magnetic flux. It is easy to follow, even though the plurality of magnetic plates 13 are Rayleigh core motors with a phase difference per pole, but due to magnetic saturation and point pressure contact) The increase of the current can be increased, which can prevent the contact from floating due to the electromagnetic bounce between the contacts. Therefore, when the excessive current is energized, the connection will be eliminated. Although the point will be eliminated, the short version can be increased. Paper size applies to China National Standard (CNS) A4 specifications (210 4 312913 -------- Order · ------- r I (Please read the precautions on the back before filling this page) Wisdom of the Ministry of Economic Affairs Consumption Cooperative of Employees of the Property Bureau- Zuosha · Printing 5 517257 V. Description of the invention (time power capacity. Embodiment 2. The second plate is a magnetic figure provided around the opening and closing contact portion of Embodiment 2. The smaller 6 to 9 in the figure are the same as those in the first embodiment. "Several magnetic plates. In the second embodiment, each magnetic plate 14 extends from the U-shaped side portion of the body to the opening and closing contact side portion. A plurality of magnetic systems are inserted with a magnetic field provided at the phase interval #la. The gap 13a is inserted and installed in an insertion slot (not labeled). The magnetic plate 14 is extended to the open side containing the movable contactor 6, and the magnetic plate 14 blocks the adjacent pole current, The generated ==, so the movable contactor 6 prevents the lateral deviation from occurring by its own current and the electromagnetic force of the adjacent poles surrounding the magnetic flux. 'In addition to suppressing the U-shaped electromagnetic force which increases the opening pull as described in the above embodiment i, The contact floating caused by the force (contact crimping force) = In addition, the lateral deviation of the movable contactor 6 is also suppressed, and of course, the short-term current-carrying capacity can be increased. Embodiment 3. Figure 4 is installed in Embodiment 3. The layout of the magnetic plate around the opening and closing contact part. The small 6 to 9 and 13 in the figure are the same as the above-mentioned embodiment. "15 series magnetic isolation plate, and the magnetic plate 13 are in the movable contactor 6 and the movable contact respectively. Side of the contact opening and closing portion of the point 6a and the fixed contact 9a , Arranged between the poles and phases. A reinforcing portion b is formed between the magnetic plate 13 and the magnetic isolation plate 15
上述實施形態2中在相間隔壁13裝設長的插入槽，從 挽性導體字側部到接點開閉部的側部’將磁性板u 本紙張尺度適用中國國家標準（CNS)A4規格（210 x 297公餐T 312913 I I 丨 I I I I I . — I--I I » I I ~~ I I--- (請先閱讀背面之注意事項再填寫本頁) 517257 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明（6 ) 插入配設在其中。因此，由於磁性板14接受的強大電磁力 在插入槽側壁產生裂紋，其對策係不希望加厚相間隔壁h 使氣體電路斷路器大型化。因此，以分割成使磁性板】3 具有確保磁路之功能，使隔磁板15具有鄰接極之隔磁功能 的構造’以使隔斷通電時短時間通電容量不會下降，以習 知之相間隔壁la的厚度，設置使磁性板13及隔磁板15 的插入槽各自獨立之補強部lc之構造，可防止相間隔壁 la發生裂紋。然後，箱體}與相間隔壁la係一體地用絕 緣性樹知利用成形模具成形製造。上述補強部1 c的位置可 有效地當作從該成形模具取出箱體1時的推出銷之抵接位 置。 上述說明中，隔磁板15也具備磁空隙13a且為複數 片’但從碟保相間隔壁1 a的強度之觀點來看，使其具備補 強部lc，而磁性板13為複數片，隔磁板15為1片之構成 亦可。 實施形態4. 接著，以將磁性板13、14及隔磁板15隔著磁空隙i3a 配置複數片的方式，鄰接極磁通之影響會消除，但自極之 環繞磁通而產生的渦流會比不具有磁空隙且由丨枚構成的 磁性板、隔磁板多，而一般額定電流範圍的渦流損耗而造 成的磁性板13、14及隔磁板15之發熱變成為能量損失和 氣動電路斷路器的溫度上升之原因。 其對策係層疊表面弱絕緣處理的磁性薄板的磁性板 13、14及隔磁板15，藉此可減輕渦流損失並抑制發熱。 卜紙張尺度適用中國國家標準（C,r^S)A4規格（210 X ________ 一 6 312913 --------^ ----'----— (請先閱讀背面之注意事頊再填寫本頁) 經濟部智慧財產局員工消費合作社印製 312913 517257 V A7 • " —-------- 五、發明說明（7 ) [產業利用性]‘ 如上述’本發明氣動電路斷路器中，經由自極電流之 磁通和經由鄰接極電流係磁通之磁空隙13a分離，即使是 每極有相位差之電流，由於磁性板13之磁性飽和、磁通消 除亦會減輕，故打開撓性導體7的U字形之電磁力（接點 壓接力）依照電流大小之比例增加，可抑制接點間電磁反彈 造成的接點浮起。裝設在可動接點6a和固定接點9a之接 點開閉部極間的磁性板14係隔斷鄰接極電流之環繞磁 通’防止可動接觸子6因為與自己的電流之電磁力而引起 的橫向偏離。 因而，過大電流通電時不會發生接點浮起和橫向偏 離，故使短時間通電容量增加。 [圖面之簡單說明] 第1圖係本發明實施形態1氣動電路斷路器之要部縱 剖面圖。 第2圖係對.實施形態1之磁性板箱體安裝配設說明 圖。 第3圖係裝設在實施形態2之開閉接點部周圍之磁性 板配置圖。 第4圖係實施形態3之磁性板及隔斷材配置圖。 第5圖係習知之氣動電路斷路器之要部側剖面圖。 第6圖係習知之氣動電路斷路器開閉接點部之要部立 體圖。 第7圖係裝設在習知之氣動電路斷路器開閉接點部周 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐)一Γ"----- I I ! (請先閱讀背面之注意事項再填寫本頁) 517257 A7 B7 五、發明說明（8 ) 圍之磁性元件配置圖。 [元件符號之說明] 經濟部智慧財產局員工消費合作社印製 1 外殼箱體、箱體 la 相間隔壁 lb 插入槽 1 c 補強部 2 開閉機構 2a 充電把手 2b 棘輪 2c 偏心凸輪 2d 投入彈簧 2e 下部連桿 3 連結銷 4 接觸臂 5 接觸臂銷 6 可動接觸子 6a 可動接點 6b 支點孔 6c 可動接觸子銷 7 挽性導體 8 下側端子 9 上側端子 9a 固定接點 10 壓接彈簧 11 消弧裝置 12、 1 3、1 4磁性板 13a 磁空隙 15 隔磁板 (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 8 312913In the second embodiment described above, a long insertion groove is installed in the phase separation wall 13 from the side of the pull conductor to the side of the contact opening / closing portion. The magnetic plate u The paper size applies the Chinese National Standard (CNS) A4 specification (210 x 297 Public Meal T 312913 II 丨 IIIII. — I--II »II ~~ I I --- (Please read the notes on the back before filling out this page) 517257 Printed by the Consumers’ Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 5. Description of the invention (6) Insertion is arranged therein. Therefore, since the strong electromagnetic force received by the magnetic plate 14 generates cracks in the side wall of the insertion groove, the countermeasure system does not want to thicken the phase partition wall h to make the gas circuit breaker large. It is divided into magnetic plates] 3 It has the function of ensuring the magnetic circuit, and the magnetic isolation plate 15 has the magnetic isolation function of the adjacent poles, so that the short-time current-carrying capacity will not decrease when the electricity is cut off. Thickness, and the structure of providing separate reinforcing portions lc for the insertion slots of the magnetic plate 13 and the magnetic isolation plate 15 can prevent cracks in the partition wall la. Then, the box body is integrated with the partition wall la with an insulating tree. The forming mold is formed and manufactured. The position of the reinforcing portion 1 c can be effectively used as the abutment position of the push-out pin when the box 1 is taken out from the forming mold. In the above description, the magnetic barrier plate 15 also has a magnetic gap 13 a and is plural. Piece ', but from the viewpoint of the strength of the disc-preserving partition wall 1 a, it may be configured to have a reinforcing portion lc, and the magnetic plate 13 may be a plurality of pieces, and the magnetic barrier plate 15 may be a single piece. Embodiment 4. Next, By arranging a plurality of magnetic plates 13 and 14 and a magnetic barrier plate 15 with a magnetic gap i3a, the influence of the magnetic flux of adjacent poles will be eliminated, but the eddy current generated by the magnetic flux surrounding the poles will be smaller than that without magnetic gaps and There are many magnetic plates and magnetic isolation plates, and the heating of magnetic plates 13, 14 and magnetic isolation plates 15 caused by eddy current loss in the general rated current range becomes the cause of energy loss and the temperature rise of the pneumatic circuit breaker. The countermeasure is to laminate the magnetic plates 13, 14 and magnetic barrier plates 15 of the magnetic thin plates with weak insulation treatment on the surface, thereby reducing the eddy current loss and suppressing heat generation. The paper size applies the Chinese national standard (C, r ^ S) A4 specification. (210 X ________ a 6 312913 -------- ^ ----'----— (Please read the notes on the reverse side before filling out this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 312913 517257 V A7 • & quot ---------- V. Description of the invention (7) [Industrial applicability] 'As mentioned above' In the pneumatic circuit breaker of the present invention, the magnetic flux via the self-pole current and the magnetic flux via the adjacent pole current The magnetic gap 13a is separated. Even if the current has a phase difference between each pole, the magnetic saturation of the magnetic plate 13 and the elimination of the magnetic flux will be reduced. Therefore, the U-shaped electromagnetic force (contact crimping force) of the flexible conductor 7 is opened according to the current. Increasing the ratio of the size can suppress the floating of the contact caused by the electromagnetic bounce between the contacts. The magnetic plate 14 installed between the poles of the contact opening and closing portions of the movable contact 6a and the fixed contact 9a blocks the surrounding magnetic flux of the adjacent pole currents, and prevents the movable contactor 6 from being caused by the electromagnetic force of its own current. Deviation. Therefore, no contact floating or lateral deviation occurs when an excessive current is energized, so that the energization capacity is increased in a short time. [Brief description of the drawing] Fig. 1 is a longitudinal sectional view of a main part of a pneumatic circuit breaker according to a first embodiment of the present invention. Fig. 2 is a diagram for explaining the installation and arrangement of the magnetic plate case in the first embodiment. Fig. 3 is a layout view of a magnetic plate installed around the opening and closing contact portion of the second embodiment. Fig. 4 is a layout diagram of a magnetic plate and a partition member according to the third embodiment. Fig. 5 is a side sectional view of a main part of a conventional pneumatic circuit breaker. Fig. 6 is a perspective view of a main part of a conventional pneumatic circuit breaker opening and closing contact portion. Figure 7 is installed in the conventional circuit breaker opening and closing contacts. The paper size of this paper is applicable to China National Standard (CNS) A4 (210 X 297 mm)-Γ " ----- II! (Please first (Please read the notes on the back and fill in this page) 517257 A7 B7 V. Description of the magnetic components around the invention (8). [Explanation of component symbols] Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 1 Enclosure box, box la Phase separation wall lb Insert slot 1 c Reinforcing part 2 Opening and closing mechanism 2a Charging handle 2b Ratchet 2c Eccentric cam 2d Input spring 2e Lower part Rod 3 Connecting pin 4 Contact arm 5 Contact arm pin 6 Movable contact 6a Movable contact 6b Pivot hole 6c Movable contact sub pin 7 Pull conductor 8 Lower terminal 9 Upper terminal 9a Fixed contact 10 Crimp spring 11 Arc suppression device 12, 1, 3, 1 4 magnetic plate 13a magnetic gap 15 magnetic isolation plate (please read the precautions on the back before filling this page) This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) 8 312913