201023230 六、發明說明： _ 【發明所屬之技術領域】 本發明係關於一種進行降壓馬達或功率改善用電容器 等電力機器之開閉控制的電磁接觸器，特別是，關於開閉 / 其主接點之驅動機構部。 ' 【先前技術】 就習知之電磁接觸器（開閉器）而言，已知有一種例如 第6圖之開閉器。（a)為正面圖，（b)為侧面剖面圖。如第 6圖（a)所示，在絕緣框架31内收納有3相份之3台真空 ⑩ 閥32，從内建在真空閥32之未圖示的接點，拉出有固定 桿33及可動桿34。在可動桿34，隔著絕緣桿35安裝有壓 接彈簧36。如第6圖（b)所示，在該壓接彈簧36之下部， 配置有一端固定於轉動軸37之開閉槓桿（lever)38。轉動 軸37係以可自由轉動之方式被支持在絕緣框架31之兩侧 壁的軸承39。再者，在轉動軸37固定有可動鐵片40。該 可動鐵片40係藉由以鐵心與線圈所構成之電磁鐵41之吸 引力而被吸引，並且藉由開放彈簧42(參照第6圖（a))朝 反方向被彈壓。 電磁鐵41之吸引力與開放彈簧42之開放力係經由轉 動軸37傳達至開閉槓桿38、絕緣桿35、可動桿34，而進 行真空閥32之主接點的開關動作。藉由通電於電磁鐵41 之線圈而使產生電磁力以吸引可動鐵片40，來保持主接點 之投入狀態，當遮斷電流時，電磁力會消失，因此由於開 放彈簧42之開放力，主接點係成為遮斷狀態（參照後述之 320999 201023230 專利文獻1)。 ‘ (專利文獻1)日本特開平11-67022號公報（第2頁、第7、 8圖） 【發明内容】 (發明所欲解決之課題） 在電磁接觸器中，在構成電磁鐵之磁軛與可動鐵片之 接觸部產生間隙時，電磁力會大幅減少。間隙之大小係依 介置於磁軛與可動鐵片之間的構成零件的公差之累積而決 ❿定。在專利文獻1之開閉器中，在磁輛與可動鐵片之間介 置有磁輛、底座、絕緣框架、軸承、轉動轴、可動鐵片等 多種構成零件。而且，由於絕緣框架係由例如澆鑄之絕緣 物所構成，因此尺寸精密度比金屬製品差。因此會產生以 下問題：為了確保所需之電磁力，必須進行可動鐵片與磁 輛之間之微妙的尺寸調整，或利用大的線圈來使產生大的 電磁力。 ^ 本發明之目的係為了解決上述問題而研創者，其目的 在於獲致一種電磁接觸器，其係在不用使線圈大型化之 下，改善磁軛與可動件（可動鐵片）間之介置零件之構成， 而可簡單地進行磁軛與可動件之間的尺寸調整。 (解決課題之手段） 本發明之電磁接觸器係具備：主電路部，係具有内建 有固定接點及可動接點之真空閥、用以收容並保持真空閥 之絕緣框架、及安裝有對兩接點間施加接觸壓力之壓接彈 簧且連結於可動接點側之絕緣桿；驅動機構部，係具有透 5 320999 201023230 過壓接彈簧使絕緣桿朝兩接點之接離方向往復移動之開閉 槓桿、設置在開閉槓桿之支點側之轉動軸、固定在轉動軸 而與開閉槓桿連動而轉動之可動件、及與可動件相對向配 置且用以吸引可動件而使轉動軸轉動之電磁鐵；以及底 座，用以固定主電路部及驅動機構部，而主電路部係隔介 絕緣框架而固定在底座，驅動機構部則未隔介絕緣框架而 固定在底座。 (發明之效果） 依據本發明之電磁接觸器，由於係隔介絕緣框架而將 主電路部固定在底座，且未隔介絕緣框架而將驅動機構部 固定在底座，因此可減少在構成驅動機構部之電磁鐵之磁 輛與可動件之間的組裝上之介置構件，且由於未介置有難 以提升尺寸精密度之絕緣框架，因此可精密度佳地進行組 裝，而使磁軛與可動件間之間隙減少。因此，在不用使線 圈大型化之下，穩定地獲得接點投入所需之電磁力。 此外，在組裝時可個別地組裝主電路部及驅動機構 部，而容易地進行尺寸調整及組裝作業。 【實施方式】 (實施形態1) 以下，依據圖式說明本發明實施形態1之電磁接觸器。 首先，以第1圖及第2圖說明電磁接觸器之整體構成。 内建有固定接點la與可動接點lb之真空閥1係以3相份 收容在絕緣框架2之内側。固定接點la係連接在固定桿 lc，固定桿lc係被導出至真空閥1之容器外部而連接於固 201023230 定側端子3，並且固定在絕緣框架2。 * 另一方面，可動接點lb係連接於可朝接點之接離方向 移動的可動桿Id。可動桿Μ係被導出至外部而經由可撓 導體4與可動側端子5連接，而且與和可動桿Id位於同軸 上之絕緣桿6之一方連結。在絕緣桿6之另一方，安裝有 對兩接點間施加接觸壓力之壓接彈簧7。 以上述之真空閥1、絕緣框架2、固定側端子3、可撓 導體4、可動側端子5、絕緣桿6、壓接彈簧7之部分構成 ® 主電路部8(參照第1圖）。該主電路部8係隔介絕緣框架2 以螺栓鎖緊固定在底座9。 再者，底座9之材料係設為金屬板，例如對鋼板進行 衝壓加工而形成者。 主電路部8之各構成零件之形狀係顯示一例，並非限 定於圖示之形狀者。 絕緣桿6之前端侧係隔介壓接彈簧7而連結在開閉槓 _桿10之一端。開閉槓桿10之另一端係固定在轉動軸11， 並以轉動軸11之軸心為支點而轉動，藉此透過壓接彈簧7 使絕緣桿6及連結於絕緣桿6之可動桿Id朝兩接點la、 lb之接離方向往復移動。 再者，在轉動軸11固定有與開閉槓桿10連動而轉動 之可動件12。並且，利用電磁力吸引可動件12，以使轉動 軸11朝投入接點之方向轉動者用的電磁鐵13係與可動件 12相對向地配設在底座9。該電磁鐵13之詳細及轉動軸 11之支持部的構成將於後述。 7 320999 201023230 為了限制可動件12之與吸引方向相反之方向之動 作，在底座9設置有剖面呈^字形之擋止件14。 在用以驅動前述絕緣桿6之開閉槓桿1〇之外，於轉動 軸11 °又置有接點開放用的槓桿（lever)15(參照第1圈）， 與該槓桿15相對向而設有開放彈簧16。以第3圖說明該 部分之詳細。第3圖係從第〗圖之箭頭nwn所觀看之 槓桿15之-端係藉由螺栓等固定在轉動轴^，另一 端側係以藉由開放彈簧16朝與可動件12之吸引方向相反 之方向彈壓之方式配置有彈I 16。開放料16之與 側:相反側係支持固定在底座9。即使槓桿15被 =彈们6推壓且轉動軸u轉動，藉由先前說明之撐止 牛4的作用，亦不會轉動超過預定角度。 二述之開閉槓桿1〇、轉動軸u、可動件η、電磁 ^止件14、槓桿15、開放彈簧16之部分構成用以 驅動接點之驅動機構部17(表昭第 展土 入 b 3第1圖）。該驅動機構部17 係未隔介絕緣框架2而直接固定在底座9侧。 =，驅動機構部17之各構成零件之形狀並非為限定 於圖例如，槓桿15亦可為與可動件㈣用者。 鐵以第2圖之剖面圖及第4圖之斜視圖說明電磁 鐵13與轉動軸u之組裝構造的詳細。 如第2圖之剖面圖所示’在電磁鐵13之中心 心18，在該鐵心18捲繞有電磁魂围 A 、鐵 19之三方的方式配設有磁^^1^圍繞電磁線圈 视ζυ磁軛20與鐵心18係由螺 320999 8 201023230 栓一體地固定。在磁軛20之下部側設置有安裝腳20a，並 ~ 利用螺栓鎖固等固定在底座9。 在呈溝形之磁軛20之開口部側的上部，設置有用以支 • 持轉動軸11之軸承支持部2Gb，在該軸承支持部20b形成 有圓形之軸承安裝孔20c。第4圖（b)係（a)之轴承支持部 20b附近的剖面圖，如圖所示，在軸承安裝孔20c裝入有 軸承21，在該軸承21插入有剖面為四角形之轉動軸11而 以可轉動之方式被支持。 〇 與電磁鐵13相對向，而在轉動軸11安裝有可動件12, 當使電磁鐵13動作而吸引可動件12時，可動件12之面係 與磁輛20之開口部侧之面幾無間隙地抵接。 在轉動軸11之上表面側之安裝孔11a，以螺栓鎖固等 固定有先前說明之開閉槓桿10。而且，在侧面側之安裝孔 lib安裝有先前說明之槓桿15。 再者，藉由將遍及轉動軸11之兩轴承21間之大致全 _ 長設成可動件12之安裝部，而進行定位，俾使轉動軸11 不會朝軸方向偏離。 再者，將轉動軸11之剖面形狀作成四角形，是由於可 動件12或開閉槓桿10、槓桿15容易固定之故，但並不一 定要限定於四角形。 以下，說明如上述構成之電磁接觸器的動作。 當真空閥1之接點開放時，電磁鐵13之磁軛20與可 動件12係處於第3圖之狀態。當對電磁接觸器發出投入指 令時，對電磁線圈19激磁，而產生圍繞在鐵心18、磁軛 9 320999 201023230 20與可動件12之磁通，且在電磁鐵ι3會產生吸弓丨力。藉 由該及引力可動件12係被磁輛20所吸引，以轉動轴11 為支點在第3圖中朝順時針方向轉動。與此連動，開閉 =10透過壓接彈簧7而將絕緣桿6與可動才旱Id上推，真 空闕1之可動接點lb會抵接在収接點la。再者，“ 壓接彈簧7而成為第2圖之狀態，完成投入。兩接點= lb係藉由壓接彈簧7之壓接力而施加有接點所需之接 壓。使電流持繞流動於電磁線圈19祕持投人狀態。為了 、持技人狀態’電磁鐵13之吸引力係設計成超過壓接彈菩 之壓接力與開玫彈簧16之開放力之總合。 ~201023230 VI. Description of the Invention: _ Technical Field of the Invention The present invention relates to an electromagnetic contactor that performs opening and closing control of an electric machine such as a step-down motor or a power improving capacitor, and particularly relates to opening/closing/main contact point thereof. Drive mechanism. [Prior Art] As a conventional electromagnetic contactor (opener), a shutter such as that of Fig. 6 is known. (a) is a front view and (b) is a side cross-sectional view. As shown in Fig. 6(a), three vacuum 10 valves 32 of three phases are housed in the insulating frame 31, and the fixing rods 33 are pulled out from the contacts (not shown) built in the vacuum valve 32, and Movable lever 34. A pressure spring 36 is attached to the movable lever 34 via an insulating rod 35. As shown in Fig. 6(b), an opening and closing lever 38 whose one end is fixed to the rotating shaft 37 is disposed at a lower portion of the crimping spring 36. The rotary shaft 37 is supported by bearings 39 on both side walls of the insulating frame 31 in a freely rotatable manner. Further, a movable iron piece 40 is fixed to the rotating shaft 37. The movable iron piece 40 is attracted by the attraction force of the electromagnet 41 composed of the core and the coil, and is biased in the opposite direction by the open spring 42 (see Fig. 6(a)). The attraction force of the electromagnet 41 and the opening force of the open spring 42 are transmitted to the opening and closing lever 38, the insulating rod 35, and the movable lever 34 via the rotating shaft 37, and the main contact of the vacuum valve 32 is switched. By energizing the coil of the electromagnet 41, an electromagnetic force is generated to attract the movable iron piece 40 to maintain the input state of the main contact, and when the current is interrupted, the electromagnetic force is lost, and therefore, due to the opening force of the open spring 42, The main contact is in an interrupted state (refer to 320999 201023230 Patent Document 1 to be described later). [Patent Document 1] Japanese Laid-Open Patent Publication No. Hei 11-67022 (page 2, page 7, FIG. 8) [Explanation of the Invention] In the electromagnetic contactor, the yoke constituting the electromagnet When a gap is formed in the contact portion with the movable iron piece, the electromagnetic force is greatly reduced. The size of the gap is determined by the accumulation of tolerances of the constituent parts placed between the yoke and the movable iron piece. In the shutter of Patent Document 1, a plurality of components such as a magnetic vehicle, a base, an insulating frame, a bearing, a rotating shaft, and a movable iron piece are interposed between the magnetic vehicle and the movable iron piece. Moreover, since the insulating frame is composed of, for example, a cast insulator, the dimensional precision is inferior to that of the metal product. Therefore, the following problem arises: in order to secure the required electromagnetic force, it is necessary to perform subtle size adjustment between the movable iron piece and the magnetic tube, or to use a large coil to generate a large electromagnetic force. The object of the present invention is to solve the above problems, and an object of the present invention is to obtain an electromagnetic contactor which improves the intervening parts between the yoke and the movable member (movable iron piece) without increasing the size of the coil. With this configuration, the size adjustment between the yoke and the movable member can be easily performed. (Means for Solving the Problem) The electromagnetic contactor of the present invention includes: a main circuit portion having a vacuum valve having a built-in fixed contact and a movable contact, an insulating frame for accommodating and holding the vacuum valve, and a pair of mounting A pressure-contact spring that applies a contact pressure between the two contacts and is coupled to the insulating rod on the movable contact side; the drive mechanism portion has a through-pressure spring of 5 320999 201023230 to reciprocate the insulating rod toward the contact direction of the two contacts. An opening and closing lever, a rotating shaft provided on a fulcrum side of the opening and closing lever, a movable member fixed to the rotating shaft and rotating in conjunction with the opening and closing lever, and an electromagnet disposed opposite to the movable member and for attracting the movable member to rotate the rotating shaft And a base for fixing the main circuit portion and the drive mechanism portion, wherein the main circuit portion is fixed to the base by the insulating frame, and the drive mechanism portion is fixed to the base without the insulating frame. Advantageous Effects of Invention According to the electromagnetic contactor of the present invention, since the main circuit portion is fixed to the base by the dielectric insulating frame, and the driving mechanism portion is fixed to the base without interposing the insulating frame, the driving mechanism can be reduced. The assembled interposing member between the magnet and the movable member of the electromagnet, and since the insulating frame which is difficult to increase the dimensional precision is not interposed, the assembly can be performed with high precision, and the yoke and the movable yoke are movable. The gap between the pieces is reduced. Therefore, the electromagnetic force required for the contact input can be stably obtained without making the coil large. Further, the main circuit portion and the drive mechanism portion can be individually assembled at the time of assembly, and the size adjustment and assembly work can be easily performed. [Embodiment] (Embodiment 1) Hereinafter, an electromagnetic contactor according to Embodiment 1 of the present invention will be described with reference to the drawings. First, the overall configuration of the electromagnetic contactor will be described with reference to Figs. 1 and 2 . A vacuum valve 1 having a fixed contact la and a movable contact 1b is housed inside the insulating frame 2 in three phases. The fixed contact la is connected to the fixed rod lc, and the fixed rod lc is led out to the outside of the container of the vacuum valve 1 to be connected to the fixed side terminal 3 of the 201023230, and is fixed to the insulating frame 2. * On the other hand, the movable contact lb is connected to the movable lever Id which is movable in the direction in which the contact is removed. The movable lever is guided to the outside and connected to the movable side terminal 5 via the flexible conductor 4, and is also coupled to one of the insulating rods 6 coaxially with the movable lever Id. On the other side of the insulating rod 6, a pressure contact spring 7 for applying a contact pressure between the two contacts is attached. The vacuum circuit 1, the insulating frame 2, the fixed-side terminal 3, the flexible conductor 4, the movable-side terminal 5, the insulating rod 6, and the crimping spring 7 are constituted by the main circuit portion 8 (see Fig. 1). The main circuit portion 8 is fixed to the base 9 by a bolt insulating frame 2 by bolts. Further, the material of the base 9 is a metal plate, for example, formed by press working a steel plate. The shape of each component of the main circuit portion 8 is shown as an example, and is not limited to the shape shown. The front end side of the insulating rod 6 is connected to one end of the opening and closing lever_rod 10 by a dielectric pressure spring 7. The other end of the opening and closing lever 10 is fixed to the rotating shaft 11, and is rotated by the pivot of the rotating shaft 11, whereby the insulating rod 6 and the movable rod Id connected to the insulating rod 6 are connected to each other through the crimping spring 7. The points la and lb are reciprocated in the direction of separation. Further, a movable member 12 that rotates in conjunction with the opening and closing lever 10 is fixed to the rotating shaft 11. Further, the movable member 12 is attracted by the electromagnetic force so that the electromagnet 13 for rotating the rotating shaft 11 in the direction of the input contact is disposed on the base 9 so as to face the movable member 12. The details of the electromagnet 13 and the configuration of the support portion of the rotating shaft 11 will be described later. 7 320999 201023230 In order to restrict the movement of the movable member 12 in the direction opposite to the suction direction, the base 9 is provided with a stopper 14 having a cross-sectional shape. In addition to the opening and closing lever 1 for driving the insulating rod 6, a lever 15 (refer to the first ring) for opening the contact is placed on the rotating shaft 11°, and is provided opposite to the lever 15. Open spring 16. The details of this part are illustrated in Figure 3. In the third diagram, the end of the lever 15 viewed from the arrow nwn of the figure is fixed to the rotating shaft by bolts or the like, and the other end side is opposed to the suction direction of the movable member 12 by the open spring 16. The direction of the spring pressure is configured with the bomb I 16 . The side of the open material 16 and the side: the opposite side supports the fixing to the base 9. Even if the lever 15 is pushed by the yoke 6 and the rotation axis u is rotated, it does not rotate beyond the predetermined angle by the action of the previously described yoke 4 . The opening and closing lever 1 〇, the rotating shaft u, the movable member η, the electromagnetic stopping member 14, the lever 15, and the opening spring 16 constitute a driving mechanism portion 17 for driving the contact (the table shows the soil into the b 3 Figure 1). The drive mechanism portion 17 is directly fixed to the base 9 side without interposing the insulating frame 2. = The shape of each component of the drive mechanism portion 17 is not limited to the figure. For example, the lever 15 may be used with the movable member (four). The details of the assembly structure of the electromagnetic iron 13 and the rotating shaft u will be described with reference to the cross-sectional view of Fig. 2 and the oblique view of Fig. 4. As shown in the cross-sectional view of Fig. 2, 'the center of the electromagnet 13 is 18, and the core 18 is wound with the electromagnetic soul A and the iron 19, and the magnet is placed around the electromagnetic coil. The yoke 20 and the core 18 are integrally fixed by a bolt 320999 8 201023230. Mounting legs 20a are provided on the lower side of the yoke 20, and are fixed to the base 9 by bolting or the like. A bearing support portion 2Gb for supporting the rotating shaft 11 is provided on an upper portion of the opening side of the groove-shaped yoke 20, and a circular bearing mounting hole 20c is formed in the bearing support portion 20b. Fig. 4(b) is a cross-sectional view of the vicinity of the bearing support portion 20b of Fig. 4(a). As shown in the drawing, a bearing 21 is mounted in the bearing mounting hole 20c, and a rotating shaft 11 having a quadrangular cross section is inserted into the bearing 21 It is supported in a rotatable manner. The crucible is opposed to the electromagnet 13, and the movable member 12 is attached to the rotating shaft 11, and when the electromagnet 13 is operated to attract the movable member 12, the surface of the movable member 12 and the surface of the opening portion of the magnetic vehicle 20 are few. Abut against the gap. The opening and closing lever 10 described above is fixed to the mounting hole 11a on the upper surface side of the rotating shaft 11 by bolting or the like. Further, the mounting hole lib on the side surface side is mounted with the lever 15 previously described. Further, by substantially arranging the length between the two bearings 21 of the rotating shaft 11 as the mounting portion of the movable member 12, the positioning is performed so that the rotating shaft 11 does not deviate in the axial direction. Further, the cross-sectional shape of the rotating shaft 11 is quadrangular because the movable member 12 or the opening and closing lever 10 and the lever 15 are easily fixed, but it is not necessarily limited to the square shape. Hereinafter, the operation of the electromagnetic contactor configured as described above will be described. When the contact of the vacuum valve 1 is opened, the yoke 20 of the electromagnet 13 and the movable member 12 are in the state of Fig. 3. When an input command is issued to the electromagnetic contactor, the electromagnetic coil 19 is excited to generate a magnetic flux around the core 18, the yoke 9 320999 201023230 20 and the movable member 12, and the suction force is generated at the electromagnet ι3. The gravitational movable member 12 is attracted by the magnetic vehicle 20, and is rotated clockwise in Fig. 3 with the rotating shaft 11 as a fulcrum. In conjunction with this, the opening/closing = 10 pushes the insulating rod 6 and the movable member Id through the crimping spring 7, and the movable contact 1b of the virtual space 1 abuts on the receiving point la. In addition, the pressure spring 7 is brought into the state of Fig. 2, and the input is completed. The two contacts = lb are the pressures required to apply the contacts by the pressure contact force of the pressure springs 7. The electromagnetic coil 19 is secretly in a state of being cast. In order to maintain the state of the technician, the attraction of the electromagnet 13 is designed to exceed the total force of the crimping force of the crimping spring and the opening force of the opening spring 16.
之嗯磁線圈19之電流而解除激磁時，電磁鐵13 壓積桿編簧7w崎Μ推 動，開閉槓桿：:：=2圖中之逆時針方向轉 離而成為斷開㈣料接點W 擒止，抵接而不會轉動超過 接者，說明本實施形態之特徵部八 構成=電磁鐵13與轉動㈣之作/、咖第4圖之 鐵心錢之糾力係在構錢麵之磁輕Β )與可動件之接觸部產生間 鐵之磁輛（或 必須以使間隙成為最小之方式組合9大:減少。因此’ =大小係依在磁輛與可動鐵片之間 L鐵。間隙 "置構件的各公差之累積而決定。…上機械性相連之 在本實施形態中’如第4固所示，透過一可轉 320999 10 201023230 動之方式將轉動輛u 突出而形成的軸承支持在使構成磁軛2〇之構件一部分 可動件12係以磁軛、。、P咖。由該構成得知’磁輕20與 之四個零件所組合，j承2卜轉動軸U、可動件12 1之開閉器相比較，技術中所說明之先前技術文獻 可動件12之間未介;置令件有^少。而且’在磁輛20與 2了緣框架2係_以::=升== 进度比金屬製品差。 wr精 隙之㈣時可動件12與雜2G(或鐵心18)之間 、隹e減少，無須進行微調整等調整作業而可簡單地 腺订调整，且可精密度佳地組裝可動件12。因此，由於可 化間隙減小到最低限度，結果因而可謀求電磁鐵13之小型 門踏再者’由於中間介置零件較少，因此可提供—種抑制 鲁 “尺寸因經時性劣化或磨耗等而變化，且品質穩定之雷 磁接觸器。 1〇再者，由電磁鐵13、軸承21、轉動軸11、開閉槓椁 介槓杯15、開放彈簧16所構成之驅動機構部π並未隔 )丨主電路部8側之絕緣框架2，而是獨立地直接固定在底 =9，因此可個別地組裝主電路部8與驅動機構部17，且 可在各單元内進行調整，而使級裝容易。 雨如上所述’依據實施形態1之電磁接觸器，在具備主 包路部（其具有真空閥、絕緣框架、絕緣桿）、驅動機構部（其 具有開閉槓桿、轉動轴、可動件、電磁鐵）及用以固定主電 11 320999 201023230 路部與驅動機構部之底座的電磁接觸器中，主電路部係隔 介絕緣框架而固定在底座，驅動機構部未隔介絕緣框架而 ' 固定在底座，因此可減少在構成驅動機構部之電磁鐵之磁 輛與可動件之間的組裝上之介置構件，且由於未介置有尺 寸精密度不易提升之絕緣框架，因此可精密度佳地進行組 裝，而使磁軛與可動件間之間隙減少。因此，在不用將線 圈大型化之情形下，可穩定地獲得接點之投入所需之電磁 力。 此外，在組裝時可個別地組裝主電路部及驅動機構 © 部，而容易地進行尺寸調整及組裝作業。 再者，驅動機構部之轉動轴係透過軸承以可轉動之方 式支持在設置於構成電磁鐵之磁輛的軸承支持部，因此磁 軛與可動件係以磁軛、軸承、轉動軸、可動件之四個零件 所組合，中間之介置構件會減少，而可充分地發揮上述效 果。 (實施形態2) @ 第5圖係顯示實施形態2之電磁接觸器之電磁鐵部的 斜視圖，且為與實施形態1之第4圖相當之部分。相當之 部分係標記相同符號並省略其詳細說明。再者，電磁接觸 器之整體圖係與實施形態1之第1圖至第3圖相當，故省 略其圖示及電磁接觸器之開閉動作的說明，以下以相異點 為中心加以說明。 如第5圖所示，本實施形態之電磁鐵22係由電磁線圈 19、位於電磁線圈19之内側的鐵心18(與第2圖之鐵心18 12 320999 201023230 相同）、及以圍繞電磁線圈19之外側三方之方式配置的磁 ' 軛23所構成，磁軛23與鐵心18係由螺栓等固定。而且， 該磁輛23係固定在底座9。 • 與實施形態1之不同點在於：轉動轴11係由配置在磁 # 輛23之兩側的軸承支持構件24所支持。轴承支持構件24 係例如將鋼板折彎而形成，並以螺栓等將安裝腳24a固定 在底座9。再者，在設於上部側之軸承支持孔（未圖示）插 入安裝有軸承21，在該軸承21插入有轉動軸11，該轉動 〇 軸11係以可轉動之方式被支持。 以與電磁鐵22相對向之方式在轉動軸11安裝有可動 件12，當使電磁鐵22動作而吸引可動件12時，可動件12 之面會與磁輛23之開口部側之面抵接。 以下，說明如上述方式構成之電磁鐵22與轉動軸11 及可動件12的作用。 在磁軛23與可動件12之間，介置有底座9、軸承支 @持構件24、軸承21、轉動轴11，就介置之構件數量而言， 雖比實施形態1增加，但與實施形態1同樣地，在磁軛23 與可動件12之間，並未介置尺寸精密度不易提升之絕緣框 架2。因此，在組裝時可動件12與磁軛23(或鐵心）之間隙 的差異會變小，間隙之調整作業變得簡單，而可精密度佳 地組裝可動件12。 再者，由電磁鐵22、軸承支持構件24、軸承21、轉 動軸11、開閉槓桿10、槓桿15、開放彈簧16所構成之驅 動機構部17(參照第1圖）係安裝在底座9側，和以收容在 13 320999 201023230 絕緣框架2側之真空閥1為首之主電路部§係可個別地組 裝，因此在各單元内可進行組裝調整。 如上所述，依據實施形態2之電磁接觸器，驅動機構 部之轉動軸係透過軸承以可轉動之方式支持在配置於電磁 鐵之兩側且固定於底座的軸承支持構件，因此在磁軛與可 動件之間並未介置尺寸精密度不易提升之絕緣框架。因 此，可動件與磁軛之間隙的差異會變小，間隙之調整作業 變得簡單’而可精密度佳地組裝可動件。 此外，在組裝時，可個別地組裝主電路部及驅動機構 部，而使尺寸調整及組裝作業變得容易。 【圖式簡單說明】 第1圖係顯示本發明實施形態1之電磁接觸器的正面 圖。 第2圖係從第1圖之箭頭π_π所觀看之側面剖面圖。 第3圖係從第1圖之箭頭ΙΠ_ΠΙ所觀看之主要部分 之局部侧面剖面圖。 刀 第4圖係顯示第1圖之電磁鐵部之局部圖，為斜視 圖’（b)為其軸承支持部之剖面圖。 ,、 第5圖係顯示本發明實施形態2之電磁接觸器 鐵部的斜視圖。 磁 第6圖係顯示習知之電磁接觸器（開閉器）之圖，（ 為正面圖’（b)為侧面剖面圖。 【主要元件符號說明】 真空閥 la 固定接點 320999 14 201023230 ' lb 可動接點 lc 固定桿 ' Id 可動桿 2 絕緣框架 3 a· 固定侧端子 4 可撓導體 . 5 可動侧端子 6 絕緣桿 7 壓接彈簧 8 主電路部 9 底座 10 開閉槓桿 11 轉動軸 12 可動件 13、22 電磁鐵 14 擋止件 ❹15 槓桿 16 開放彈簧 17 驅動機構部 18 鐵心 19 電磁線圈 20、23 磁軛 20a、24a安裝腳 20b 軸承支持部 20c 軸承安裝孔 21 軸承 24 軸承支持構件 ❿ 15 320999When the current of the magnetic coil 19 is released and the excitation is released, the electromagnet 13 is slidably pushed by the squeezing lever spring 7w, and the opening and closing lever is turned counterclockwise in the figure: (2) is turned off (four) the material contact W 擒抵 , , , , , , , , , , , 特征 特征 特征 特征 特征 特征 特征 特征 特征 特征 特征 特征 特征 特征 特征 特征 特征 特征 特征 特征 特征 特征 特征 特征 特征 特征 特征 特征 特征 特征 特征 特征 特征 特征 特征 特征 特征 特征 特征 特征 特征Β) The contact with the movable part generates a magnetic car between the irons (or must be combined in such a way that the gap is minimized: 9). Therefore, the size is dependent on the L-iron between the magnetic vehicle and the movable iron piece. The accumulation of the tolerances of the components is determined. In the present embodiment, as shown in the fourth embodiment, the bearing support formed by the rotation of the rotating unit u is transmitted through a rotating 320999 10 201023230. A part of the movable member 12 constituting the yoke 2A is made of a yoke, a P coffee. From this configuration, it is known that the magnetic light 20 is combined with the four parts, and the rotating shaft U and the movable member are Comparing the shutters of 12 1 with the prior art document movable member 12 described in the prior art介;There are fewer orders, and 'in the magnetic car 20 and 2 edge frame 2 _ to::= liter == progress is worse than metal products. wr fine gap (four) mover 12 and miscellaneous 2G (or Between the cores 18) and 隹e, the adjustment work can be easily performed without adjustment operations such as fine adjustment, and the movable member 12 can be assembled with high precision. Therefore, since the adjustable gap is minimized, the result is In addition, since the small-sized door of the electromagnet 13 can be used, it is possible to provide a lightning magnetic contactor that suppresses the change in size due to deterioration over time or wear, and is stable in quality. Further, the drive mechanism portion π including the electromagnet 13, the bearing 21, the rotating shaft 11, the opening and closing lever, the lever cup 15, and the opening spring 16 is not separated from the insulating frame 2 on the side of the main circuit portion 8, and Since it is independently fixed directly to the bottom=9, the main circuit unit 8 and the drive mechanism unit 17 can be separately assembled, and adjustment can be performed in each unit to facilitate the stage mounting. As described above, the invention is based on the first embodiment. Electromagnetic contactor with main package section (which has vacuum valve, insulation frame Insulation rod), drive mechanism portion (which has opening and closing lever, rotating shaft, movable member, electromagnet) and electromagnetic contactor for fixing the main power 11 320999 201023230 road portion and the driving mechanism portion, the main circuit portion is separated The insulating member is fixed to the base by the insulating frame, and the driving mechanism portion is fixed to the base without interposing the insulating frame, so that the assembled interposing member between the magnetic vehicle and the movable member of the electromagnet constituting the driving mechanism portion can be reduced, and Since the insulating frame which is difficult to be improved in size is not interposed, the assembly can be performed with high precision, and the gap between the yoke and the movable member can be reduced. Therefore, it is possible to stably stabilize the coil without increasing the size of the coil. Obtain the electromagnetic force required for the input of the joint. Further, the main circuit portion and the drive mechanism © can be separately assembled during assembly, and the size adjustment and assembly work can be easily performed. Further, the rotation shaft of the drive mechanism portion is rotatably supported by the bearing support portion provided to the magnetic vehicle constituting the electromagnet through the bearing, so the yoke and the movable member are yoke, bearing, rotating shaft, movable member When the four parts are combined, the intermediate intervening members are reduced, and the above effects can be sufficiently exerted. (Embodiment 2) @ Fig. 5 is a perspective view showing an electromagnet portion of the electromagnetic contactor according to the second embodiment, and is a portion corresponding to the fourth embodiment of the first embodiment. The equivalents are marked with the same reference numerals and the detailed description is omitted. In addition, the overall view of the electromagnetic contactor is equivalent to the first to third embodiments of the first embodiment. Therefore, the illustration of the opening and closing operation of the electromagnetic contactor is omitted, and the following description will focus on the different points. As shown in Fig. 5, the electromagnet 22 of the present embodiment is composed of an electromagnetic coil 19, a core 18 located inside the electromagnetic coil 19 (the same as the core of Fig. 2, 12 12 320999 201023230), and surrounding the electromagnetic coil 19. The magnetic yoke 23 is disposed on the outer side, and the yoke 23 and the core 18 are fixed by bolts or the like. Further, the magnetic vehicle 23 is fixed to the base 9. • The difference from the first embodiment is that the rotating shaft 11 is supported by the bearing supporting members 24 disposed on both sides of the magnetic vehicle 23. The bearing support member 24 is formed by, for example, bending a steel plate, and fixing the mounting leg 24a to the base 9 with a bolt or the like. Further, a bearing 21 is inserted and attached to a bearing support hole (not shown) provided on the upper side, and a rotary shaft 11 is inserted into the bearing 21, and the rotary shaft 11 is rotatably supported. The movable member 12 is attached to the rotating shaft 11 so as to face the electromagnet 22, and when the electromagnet 22 is operated to attract the movable member 12, the surface of the movable member 12 abuts against the opening side of the magnetic vehicle 23. . Hereinafter, the action of the electromagnet 22 configured as described above, the rotating shaft 11 and the movable member 12 will be described. Between the yoke 23 and the movable element 12, the base 9, the bearing support member 24, the bearing 21, and the rotating shaft 11 are interposed, and the number of components interposed is increased as compared with the first embodiment. In the same manner as in the first embodiment, the insulating frame 2 in which the dimensional precision is not easily improved is not interposed between the yoke 23 and the movable member 12. Therefore, the difference in the gap between the movable member 12 and the yoke 23 (or the core) at the time of assembly becomes small, the adjustment work of the gap becomes simple, and the movable member 12 can be assembled with high precision. Further, the drive mechanism portion 17 (see FIG. 1) including the electromagnet 22, the bearing support member 24, the bearing 21, the rotating shaft 11, the opening and closing lever 10, the lever 15, and the open spring 16 is attached to the base 9 side. The main circuit unit, which is housed in the vacuum valve 1 on the side of the insulating frame 2 of 13 320999 201023230, can be assembled separately, so that assembly adjustment can be performed in each unit. As described above, according to the electromagnetic contactor of the second embodiment, the rotating shaft of the driving mechanism portion is rotatably supported by the bearing supporting member disposed on both sides of the electromagnet and fixed to the base through the bearing, and thus the yoke and the yoke are Insulating frames with small dimensional precision are not interposed between the movable members. Therefore, the difference in the gap between the movable member and the yoke becomes small, and the adjustment work of the gap becomes simple, and the movable member can be assembled with high precision. Further, at the time of assembly, the main circuit portion and the drive mechanism portion can be individually assembled, and the size adjustment and assembly work can be facilitated. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a front elevational view showing an electromagnetic contactor according to a first embodiment of the present invention. Fig. 2 is a side cross-sectional view as seen from the arrow π_π of Fig. 1. Fig. 3 is a partial side cross-sectional view of the main portion as viewed from the arrow ΙΠ_ΠΙ of Fig. 1. Knife Fig. 4 is a partial view showing the electromagnet portion of Fig. 1, which is a cross-sectional view of the bearing support portion (b). Fig. 5 is a perspective view showing the iron portion of the electromagnetic contactor according to the second embodiment of the present invention. Magnetic Figure 6 shows a diagram of a conventional electromagnetic contactor (opener), (for front view '(b) is a side cross-sectional view. [Main component symbol description] Vacuum valve la fixed contact 320999 14 201023230 ' lb movable connection Point lc fixing rod ' Id movable rod 2 insulating frame 3 a · fixed side terminal 4 flexible conductor. 5 movable side terminal 6 insulating rod 7 crimping spring 8 main circuit part 9 base 10 opening and closing lever 11 rotating shaft 12 movable member 13, 22 Electromagnet 14 Stopper ❹15 Lever 16 Open spring 17 Drive mechanism 18 Core 19 Electromagnetic coil 20, 23 Reed 20a, 24a Mounting foot 20b Bearing support 20c Bearing mounting hole 21 Bearing 24 Bearing support member ❿ 15 320999