JP2010062078A

JP2010062078A - Electromagnetic contactor

Info

Publication number: JP2010062078A
Application number: JP2008228503A
Authority: JP
Inventors: Hirotaka Imai; 宏貴今井
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2008-09-05
Filing date: 2008-09-05
Publication date: 2010-03-18

Abstract

<P>PROBLEM TO BE SOLVED: To obtain an electromagnetic contactor capable of being miniaturized and with high reliability. <P>SOLUTION: A diode 51a is arranged between one end of a rotating shaft 37 protruded outside a support piece 53a and a first terminal 50yb, and at the same time, a lead wire 52a of the diode 51a is soldered to that one end of the rotating shaft 37 and the first terminal 50yb. Likewise, a resistor 51b is arranged between the other end of the rotating shaft 37 protruded outside a support piece 53b and a second terminal 50xb, and at the same time, a lead wire 52b of the resistor 51b is soldered to that other end of the rotating shaft 37 and the second terminal 50xb. In other words, a surge absorber 51 each is arranged at a space between either end of the rotating shaft 37 of the lever 31 and the first terminal 50yb and the second terminal part 50xb. At the same time, an electrical circuit from a first terminal box 50y up to a second terminal box 50x via the diode 51a, the rotating shaft 37, and the resistor 51b, that is, a surge-absorbing circuit is formed. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明はコイルの通電を遮断する時に発生するサージ電圧を吸収するサージ吸収器を備えた電磁接触器に関する。 The present invention relates to an electromagnetic contactor provided with a surge absorber that absorbs a surge voltage generated when a coil is turned off.

サージ吸収器を備えた電磁接触器は、例えば特許文献１記載のものがある。特許文献１によれば、サージ吸収器を構成する各電気素子（ダイオード、ツェナーダイオード、及び保護抵抗）の間を互いのリード線の端部をはんだにより接合するとともに、サージ吸収器の両端のリード線をコイルの両端、コイル端子、又はコイル端子接続ばねにはんだにより接合している。 An example of an electromagnetic contactor provided with a surge absorber is disclosed in Patent Document 1. According to Patent Literature 1, the ends of each lead wire are joined by solder between the electric elements (diodes, Zener diodes, and protective resistors) constituting the surge absorber, and leads at both ends of the surge absorber. The wire is joined to both ends of the coil, the coil terminal, or the coil terminal connection spring by solder.

特開昭６０−１３００１８号公報Japanese Patent Laid-Open No. 60-130018

上記のような従来の電磁接触器において、通常、サージ吸収器は電磁石装置と接点部との間に配置されたレバーの回転を邪魔せずに、コイルの両端、コイル端子、又はコイル端子接続ばねと電気的に接続しなければならないために、本体ケースとレバーとの間の空間を利用して、レバーの周りを囲むように配置されていた。しかしながら、このような従来の構成では、サージ吸収器の配置空間を本体ケースの側面とレバーとの間に確保するために、電磁接触器が大型化してしまうという問題があった。また、サージ吸収器を構成する各電気素子は、互いのリード線の端部がはんだにより接合されるとともに、レバーの周りを囲むように配置されるために、例えば、レバーの回転動作などによる振動が生じると、レバーと干渉してはんだ付け部分にて断線を起こすおそれがあり、信頼性に欠けるという問題があった。 In the conventional electromagnetic contactor as described above, normally, the surge absorber does not interfere with the rotation of the lever disposed between the electromagnet device and the contact portion, and the both ends of the coil, the coil terminal, or the coil terminal connection spring. Therefore, the space between the main body case and the lever is used to surround the lever. However, in such a conventional configuration, there is a problem that the electromagnetic contactor is enlarged in order to secure a space for arranging the surge absorber between the side surface of the main body case and the lever. In addition, since each electrical element constituting the surge absorber is disposed so that the ends of each lead wire are joined by solder and surround the lever, for example, vibration due to the rotation operation of the lever, etc. If this occurs, there is a risk that it may interfere with the lever and cause disconnection at the soldered portion, resulting in a lack of reliability.

本発明は、上記の課題を解決するためのものであり、小型化が可能でかつ信頼性の高い電磁接触器を得ることを目的とする。 The present invention is for solving the above-described problems, and an object of the present invention is to obtain a highly reliable electromagnetic contactor that can be reduced in size.

本発明にかかる電磁接触器は、第１及び第２のコイル端子を備える電磁石装置と、接点部と、前記電磁石装置と前記接点部との間に配置され、前記電磁石装置の作用により回転して前記接点部を開閉動作させるレバーと、前記レバーを軸支し、一端部において前記第１のコイル端子と電気的に接続されるとともに他端部において前記第２のコイル端子と電気的に接続される導電部を少なくとも一部に有する回転軸と、少なくとも１つの電気素子から構成され、前記第１のコイル端子と前記導電部の一端部との間、及び／又は前記第２のコイル端子と前記導電部の他端部との間に電気的に接続されたサージ吸収器と、を備えたことを特徴とする。 An electromagnetic contactor according to the present invention is disposed between an electromagnet device including first and second coil terminals, a contact portion, and the electromagnet device and the contact portion, and is rotated by the action of the electromagnet device. A lever that opens and closes the contact portion, and pivotally supports the lever, and is electrically connected to the first coil terminal at one end and electrically connected to the second coil terminal at the other end. A rotating shaft having at least a part of the conductive portion, and at least one electric element, and between the first coil terminal and one end of the conductive portion and / or the second coil terminal and the And a surge absorber electrically connected to the other end of the conductive portion.

つぎの発明にかかる電磁接触器は、前記回転軸の全部が前記導電部で形成され、前記サージ吸収器は前記第１のコイル端子と前記導電部の一端部との間、及び／又は前記第２のコイル端子と前記導電部の他端部との間に配置されることを特徴とする。 In the electromagnetic contactor according to the next invention, the entire rotation shaft is formed by the conductive portion, and the surge absorber is disposed between the first coil terminal and one end portion of the conductive portion and / or the first contact portion. It arrange | positions between 2 coil terminals and the other end part of the said electroconductive part, It is characterized by the above-mentioned.

つぎの発明にかかる電磁接触器は、前記サージ吸収器は第１の電気素子と第２の電気素子とを有し、前記第１の電気素子は前記第１のコイル端子と前記導電部の一端部とにはんだ付けされ、前記第２の電気素子は前記第２のコイル端子と前記導電部の他端部とにはんだ付けされることを特徴とする。 In the electromagnetic contactor according to the next invention, the surge absorber has a first electric element and a second electric element, and the first electric element is one end of the first coil terminal and the conductive portion. The second electric element is soldered to the second coil terminal and the other end of the conductive portion.

つぎの発明にかかる電磁接触器は、前記サージ吸収器を構成する前記電気素子が前記第１のコイル端子と前記導電部の一端部とにはんだ付けされ、所定長さの導線が前記第２のコイル端子と前記導電部の他端部とにはんだ付けされることを特徴とする。 In the electromagnetic contactor according to the next invention, the electric element constituting the surge absorber is soldered to the first coil terminal and one end portion of the conductive portion, and a conductor having a predetermined length is connected to the second conductor. It is soldered to a coil terminal and the other end of the conductive part.

本発明によれば、電磁接触器の小型化を図ることができるという効果を奏する。さらに、サージ吸収器がレバーと干渉することがないため、信頼性の高い電磁接触器を得ることができるという効果を奏する。 According to the present invention, it is possible to reduce the size of the electromagnetic contactor. Furthermore, since the surge absorber does not interfere with the lever, there is an effect that a highly reliable electromagnetic contactor can be obtained.

実施の形態１.
本発明に係る実施の形態１を、図１〜５を参照して説明する。 Embodiment 1.
Embodiment 1 according to the present invention will be described with reference to FIGS.

図１は本実施形態の電磁接触器の斜視図、図２は図１のＩＩ−ＩＩ線断面図、図３は要部の分解斜視図、図４は要部の正面図である。図１に示すように、電磁接触器本体１は上面が開放された下ケース２と、下ケース２の上面開口を覆うように下ケース２上に固定した上ケース３とから成る。図２に示すように、下ケース２内の空間と上ケース３内の空間との間に仕切り板４５が内設され、下ケース２内には電磁石装置３０が、上ケース３内には接点部３２がそれぞれ配置される。 1 is a perspective view of the electromagnetic contactor of the present embodiment, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, FIG. 3 is an exploded perspective view of the main part, and FIG. As shown in FIG. 1, the magnetic contactor body 1 includes a lower case 2 whose upper surface is open, and an upper case 3 fixed on the lower case 2 so as to cover the upper surface opening of the lower case 2. As shown in FIG. 2, a partition plate 45 is provided between the space in the lower case 2 and the space in the upper case 3, the electromagnet device 30 is in the lower case 2, and the contact is in the upper case 3. The parts 32 are arranged respectively.

仕切り板４５で仕切られていない側方の空間において、レバー３１が図３の上下方向に配置される。そして、このレバー３１の上端が、接点部３２に対向し、下端が電磁石装置３０に対向して位置される。 In a side space not partitioned by the partition plate 45, the lever 31 is arranged in the vertical direction of FIG. The upper end of the lever 31 faces the contact point 32 and the lower end faces the electromagnet device 30.

図２と図３に示すように、電磁石装置３０は、絶縁性部材からなる略ボビン形状のコイル枠３３と、コイル枠３３に導線を巻回して形成されるコイル３４と、コイル枠３３に跨設される一対の略コ字形の固定鉄心３６と、コイル３４の励磁・非励磁によりコイル枠３３の軸方向に変位する可動鉄心３５とから構成される。ここで、図２の紙面方向において、可動鉄心３５の鉄心棒３５xはコイル枠３３の内側に挿通され、鉄心棒３５xの左端はレバー３１の下端と対向するとともに、コイル枠３３と固定鉄心３６との間を変位可能な第１のアーム部３５yを備え、鉄心棒３５xの右端は固定鉄心３６と下ケース２との間を変位可能な第２のアーム部３５zを備える。 As shown in FIGS. 2 and 3, the electromagnet device 30 includes a substantially bobbin-shaped coil frame 33 made of an insulating member, a coil 34 formed by winding a conductive wire around the coil frame 33, and straddling the coil frame 33. A pair of substantially U-shaped fixed iron cores 36 and a movable iron core 35 that is displaced in the axial direction of the coil frame 33 by the excitation / non-excitation of the coil 34 are configured. 2, the iron core 35x of the movable iron core 35 is inserted inside the coil frame 33, the left end of the iron core 35x faces the lower end of the lever 31, and the coil frame 33 and the fixed iron core 36 A first arm portion 35y displaceable between the fixed iron core 36 and the lower case 2 is provided at the right end of the iron core bar 35x.

図３に示すように、一対の固定鉄心３６のレバー３１と対向する一方の端面部には、絶縁性部材からなる一対の支持板５３が、可動鉄心３５の鉄心棒３５xを挟んで図３の上下方向に平行して固着される。一対の支持板５３の内側縁部には、図３の上下方向のほぼ中間部に、可動鉄心３５の変位する方向に所定長さ対向して延在する支持片５３aが設けられる。そして、この対向する一対の支持片５３aに、回転軸３７の両端を貫通状態に固定する軸穴５３bが穿設される。この回転軸３７は、レバー３１のほぼ中央部を挿通し、レバー３１を回転自在に軸支する。ここで、レバー３１は絶縁性部材から構成されている。一方、回転軸３７はそのほぼ全長にわたる導電性部材からなる導電部を有する。回転軸３７の導電部は、後述する回転軸３７の両端近傍のはんだ５４の間を電気的に接続できればよく、回転軸３７の導電部でない部分は、絶縁性部材から構成されてもよい。 As shown in FIG. 3, a pair of support plates 53 made of an insulating member is disposed on one end surface portion of the pair of fixed iron cores 36 facing the lever 31 with the iron core bar 35 x of the movable iron core 35 interposed therebetween. It is fixed parallel to the vertical direction. At the inner edge of the pair of support plates 53, a support piece 53a is provided at a substantially intermediate portion in the vertical direction in FIG. 3 so as to extend facing the predetermined length in the direction in which the movable iron core 35 is displaced. A pair of support pieces 53a facing each other is provided with a shaft hole 53b for fixing both ends of the rotating shaft 37 in a penetrating state. The rotary shaft 37 is inserted through substantially the center of the lever 31 and rotatably supports the lever 31. Here, the lever 31 is comprised from the insulating member. On the other hand, the rotating shaft 37 has a conductive portion made of a conductive member over almost the entire length thereof. The conductive portion of the rotating shaft 37 only needs to be able to electrically connect between the solders 54 near both ends of the rotating shaft 37 to be described later, and the portion that is not the conductive portion of the rotating shaft 37 may be made of an insulating member.

各支持板５３の上端部には、コイル３４を後述する外部電源９０に接続するコイル端子である一対の端子台５０が固定される。端子台５０は導電性部材からなり、第１の端子台５１xと第２の端子台５０yとからなる。第１の端子台５０xと第２の端子台５０yとは、コイル３４の両端を接続する一対の端子ねじ４を螺合する螺合穴５０aが穿設されるとともに、図１に示すように上ケース３の外部に露出している。さらに図３に示すように、第１の端子台５０xと第２の端子台５０yにはそれぞれ第１の端子部５０xbと第２の端子部５０ybが一体に形成され、レバー３１の回転軸３７の両端部の上方に所定距離をおいて位置している。この所定距離は、サージ吸収器５１を構成するダイオード５１aや抵抗５１bの長手方向の長さとほぼ等しい。 A pair of terminal blocks 50, which are coil terminals that connect the coil 34 to an external power supply 90 described later, are fixed to the upper ends of the support plates 53. The terminal block 50 is made of a conductive member, and includes a first terminal block 51x and a second terminal block 50y. The first terminal block 50x and the second terminal block 50y are provided with screw holes 50a for screwing a pair of terminal screws 4 that connect both ends of the coil 34, as shown in FIG. The case 3 is exposed to the outside. Further, as shown in FIG. 3, a first terminal block 50xb and a second terminal block 50yb are formed integrally with the first terminal block 50x and the second terminal block 50y, respectively. It is located above the both ends with a predetermined distance. This predetermined distance is substantially equal to the length in the longitudinal direction of the diode 51a and the resistor 51b constituting the surge absorber 51.

図３と図４に示すように、支持片５３aの外側に突き出た回転軸３７の一端と第１の端子部５０ybとの間にダイオード５１aを配置するとともに、回転軸３７の一端と第１の端子部５０ybとにダイオード５１aのリード線５２aをはんだ付けする。同様に、支持片５３bの外側に突き出た回転軸３７の他端と第２の端子部５０xbとの間に抵抗５１bを配置するとともに、回転軸３７の他端と第２の端子部５０xbとに抵抗５１bのリード線５２bをはんだ付けする。すなわち、レバー３１の回転軸３７の両端と第１の端子部５０yb及び第２の端子部５０xbとの間の空間にサージ吸収器５１を配置する。同時に、第一の端子台５０yからダイオード５１a、回転軸３７、抵抗５１bを経て第２の端子台５０xに至る電気回路、すなわちサージ吸収回路が形成される。 As shown in FIGS. 3 and 4, a diode 51a is disposed between one end of the rotating shaft 37 protruding outside the support piece 53a and the first terminal portion 50yb, and one end of the rotating shaft 37 and the first terminal The lead wire 52a of the diode 51a is soldered to the terminal portion 50yb. Similarly, a resistor 51b is disposed between the other end of the rotating shaft 37 protruding outside the support piece 53b and the second terminal portion 50xb, and between the other end of the rotating shaft 37 and the second terminal portion 50xb. The lead wire 52b of the resistor 51b is soldered. That is, the surge absorber 51 is disposed in the space between both ends of the rotating shaft 37 of the lever 31 and the first terminal portion 50yb and the second terminal portion 50xb. At the same time, an electric circuit from the first terminal block 50y to the second terminal block 50x through the diode 51a, the rotating shaft 37, and the resistor 51b, that is, a surge absorbing circuit is formed.

一方、接点部３２は、図２、図３に示すように、前端部をレバー３１の上端部に対向位置させて、仕切り板４５上をその長手方向に移動可能な絶縁性部材からなる棒状の接点保持体４０と、接点保持体４０に取り付けられる圧縮ばね４１と、可動接触子４２と、可動接点４３と、上ケース３に設けられた図示しない固定接点とからなる。詳しくは、接点保持体４０には、長手方向の側面部に所定間隔で複数の貫通孔４０aが並設され、各貫通孔４０a内には、圧縮ばね４１により接点保持体４０のレバー３１から離れる方向に付勢された可動接触子４２が貫通状態に取り付けられる。さらに、各可動接触子４２の両端には、固定接点と接離する可動接点４３が付設される。なお、固定接点及び可動接点は、電磁接触器の仕様に応じて必要な数だけ取り付けられる。 On the other hand, as shown in FIGS. 2 and 3, the contact portion 32 has a rod-like shape made of an insulating member that can move in the longitudinal direction on the partition plate 45 with the front end portion opposed to the upper end portion of the lever 31. The contact holder 40 includes a compression spring 41 attached to the contact holder 40, a movable contact 42, a movable contact 43, and a fixed contact (not shown) provided on the upper case 3. Specifically, the contact holding body 40 has a plurality of through holes 40a arranged in parallel at predetermined intervals on the side surface in the longitudinal direction, and is separated from the lever 31 of the contact holding body 40 by a compression spring 41 in each through hole 40a. A movable contact 42 biased in the direction is attached in a penetrating state. Further, movable contacts 43 that are in contact with and away from the fixed contacts are attached to both ends of each movable contact 42. In addition, a fixed contact and a movable contact are attached by the required number according to the specification of an electromagnetic contactor.

接点保持体４０の後端部と上ケース３との間には、接点保持体４０を前方側、すなわちレバー側へ押圧する復帰ばね４４が介在される。また、接点保持体４０は、接点の開閉状態を外部から確認できるようにするための表示用突起を、上ケース３の上面開口から突出させている。 Between the rear end portion of the contact holder 40 and the upper case 3, a return spring 44 that presses the contact holder 40 forward, that is, the lever side is interposed. In addition, the contact holder 40 has a display protrusion protruding from the upper surface opening of the upper case 3 so that the open / closed state of the contact can be confirmed from the outside.

図５は、回路図であり、コイル３４の両端は一対の端子台５０に接続されており、一方の端子台５０は電磁接触器１の外部電源９０に接続されるとともに、他方の端子台５０は外部電源９０に外部スイッチ９１を介して接続される。ここで、外部電源９０は例えばDC24Vなどの直流電源であり、外部スイッチ９１は例えば手動スイッチ、制御盤等に使用するマイクロスイッチ、制御機器に内蔵されるスイッチである。 FIG. 5 is a circuit diagram in which both ends of the coil 34 are connected to a pair of terminal blocks 50, and one terminal block 50 is connected to the external power supply 90 of the electromagnetic contactor 1 and the other terminal block 50. Are connected to an external power supply 90 via an external switch 91. Here, the external power source 90 is a direct current power source such as DC 24V, for example, and the external switch 91 is a manual switch, a micro switch used for a control panel or the like, and a switch built in the control device.

ここで、サージ吸収器５１と回転軸３７の配置は、図５に示すものに限られない。例えば、回転軸３７の一端と一方の端子台５０との間に、ダイオード５１aと抵抗５１bとから構成されるサージ吸収器５１を接続するとともに、回転軸３７の他端を導線を介して他方の端子台５０に直接接続してもよい。また、サージ吸収器５１は、ダイオードと抵抗との組合わせの代わりに、バリスタのみから構成させることも可能である。また、回転軸３７の導電部が高抵抗の導電性部材からなる場合は、サージ吸収器をダイオードのみから構成させることも可能である。 Here, arrangement | positioning of the surge absorber 51 and the rotating shaft 37 is not restricted to what is shown in FIG. For example, a surge absorber 51 composed of a diode 51a and a resistor 51b is connected between one end of the rotating shaft 37 and one terminal block 50, and the other end of the rotating shaft 37 is connected to the other via a conducting wire. The terminal block 50 may be directly connected. Further, the surge absorber 51 can be composed of only a varistor instead of a combination of a diode and a resistor. In addition, when the conductive portion of the rotating shaft 37 is made of a high-resistance conductive member, the surge absorber can be composed of only a diode.

また、本実施形態では、レバー３１の回転軸３７の両端を保持する支持片５３aの外側で、回転軸３７の両端とサージ吸収器５１のリード線５２との間をはんだ付けしているが、支持片５３aの内側ではんだ付けしても同様の動作を行なわせることができる。 In the present embodiment, the outer end of the support piece 53a that holds both ends of the rotating shaft 37 of the lever 31 is soldered between both ends of the rotating shaft 37 and the lead wire 52 of the surge absorber 51. The same operation can be performed by soldering inside the support piece 53a.

つぎに、動作を説明する。図５に示す外部スイッチ９１がＯＦＦの場合、電磁石装置３０はコイル３４が非励磁の状態にあり、図２に示すように、可動鉄心３５が図示右方向に移動しているため、接点保持体４０は復帰ばね４４に押されて図示左方向に移動している。このとき、可動接点４２は図示しない固定接点と離間している。同時に、レバー３１は接点保持体４０により上端部が押されて回転軸３７周りを回転し、その下端部が電磁石装置３０の可動鉄心３５の一端に圧接している。 Next, the operation will be described. When the external switch 91 shown in FIG. 5 is OFF, the electromagnet device 30 has the coil 34 in a non-excited state and, as shown in FIG. 40 is pushed by the return spring 44 and moves to the left in the figure. At this time, the movable contact 42 is separated from a fixed contact (not shown). At the same time, the upper end of the lever 31 is pushed by the contact holder 40 and rotates around the rotation shaft 37, and the lower end thereof is in pressure contact with one end of the movable iron core 35 of the electromagnet device 30.

外部スイッチ９１がＯＮになると、外部電源９０からの電流によりコイル３４が励磁され、可動鉄心３５を図示左方向に移動させ、レバー３１の下端部が図２の左方向へ押圧される。可動鉄心３５に働く力が復帰ばね４４の復帰力より勝るようになると、レバー３１は回転軸３７周りを右回転しながら上端が接点保持体４０の前端部を押圧するため、接点保持体４０は復帰ばね４４に抗して図示右方向に移動する。 When the external switch 91 is turned on, the coil 34 is excited by the current from the external power source 90, the movable iron core 35 is moved in the left direction in the figure, and the lower end portion of the lever 31 is pressed in the left direction in FIG. When the force acting on the movable iron core 35 is greater than the return force of the return spring 44, the lever 31 rotates clockwise around the rotation shaft 37 and the upper end presses the front end of the contact holder 40. It moves to the right in the figure against the return spring 44.

接点保持体４０が図示右方向に所定位置まで移動すると、可動接点４２が図示しない固定接点と接触し、可動接点４２と固定接点は圧縮ばね４１により圧接状態に保持される。外部スイッチ９１がＯＮである間は、可動鉄心３５に力が常に働いているため、可動鉄心３５と接点部３２はこの位置で保持される。 When the contact holder 40 moves to a predetermined position in the right direction in the figure, the movable contact 42 comes into contact with a fixed contact (not shown), and the movable contact 42 and the fixed contact are held in a pressure contact state by the compression spring 41. While the external switch 91 is ON, a force is always applied to the movable iron core 35, so that the movable iron core 35 and the contact portion 32 are held at this position.

つぎに、外部スイッチ９１がＯＦＦになり、コイル３４が非励磁になると、可動鉄心３５が元の位置に戻る方向に動くため、復帰ばね４４の弾性力でレバー３１が左回転をして接点保持体４０が元の位置にまで移動し、可動接点４３が図示しない固定接点から離間する。このとき、コイル３４に発生するサージ電圧による電流は、サージ吸収器５１と回転軸３７とを繋ぐサージ吸収回路を流れるため、主に抵抗５１bで消費される。 Next, when the external switch 91 is turned OFF and the coil 34 is de-energized, the movable iron core 35 moves in a direction to return to the original position, so that the lever 31 rotates counterclockwise by the elastic force of the return spring 44 and holds the contact. The body 40 moves to the original position, and the movable contact 43 is separated from the fixed contact (not shown). At this time, the current due to the surge voltage generated in the coil 34 flows through the surge absorption circuit that connects the surge absorber 51 and the rotating shaft 37, and is therefore mainly consumed by the resistor 51b.

本実施の形態によれば、レバーの回転軸の両端とコイル端子である端子台との間の空間にサージ吸収器を配置したことで、電磁接触器の小型化を図ることができるという効果を奏する。また、サージ吸収器がレバーと干渉することがないため、回転軸とサージ吸収器を構成する電気素子のリード線との間のはんだ付け部分にて、断線を起こすおそれがない。また、レバーの回転軸の両端にサージ吸収器を構成する電気素子のリード線をはんだ付けすることで、回転軸が支持片の軸穴から抜け落ちることがない。すなわち、信頼性の高い電磁接触器を得ることができるという効果を奏する。 According to the present embodiment, the surge absorber is disposed in the space between both ends of the rotating shaft of the lever and the terminal block that is the coil terminal, so that the electromagnetic contactor can be reduced in size. Play. Further, since the surge absorber does not interfere with the lever, there is no possibility of disconnection at the soldered portion between the rotating shaft and the lead wire of the electric element constituting the surge absorber. Further, by soldering the lead wires of the electric elements constituting the surge absorber to both ends of the rotating shaft of the lever, the rotating shaft does not fall out of the shaft hole of the support piece. That is, there is an effect that a highly reliable electromagnetic contactor can be obtained.

実施の形態１の電磁接触器の斜視図である。1 is a perspective view of an electromagnetic contactor according to Embodiment 1. FIG. 図１のＩＩ−ＩＩ線の断面図である。It is sectional drawing of the II-II line of FIG. 要部の分解斜視図である。It is a disassembled perspective view of the principal part. 要部の正面図である。It is a front view of the principal part. 回路図である。It is a circuit diagram.

符号の説明Explanation of symbols

１電磁接触器
３０電磁石装置
３２接点部
３１レバー
３７回転軸
３４コイル
５０端子台
５１サージ吸収器
５４はんだ DESCRIPTION OF SYMBOLS 1 Electromagnetic contactor 30 Electromagnet apparatus 32 Contact part 31 Lever 37 Rotating shaft 34 Coil 50 Terminal block 51 Surge absorber 54 Solder

Claims

第１及び第２のコイル端子を備える電磁石装置と、
接点部と、
前記電磁石装置と前記接点部との間に配置され、前記電磁石装置の作用により回転して前記接点部を開閉動作させるレバーと、
前記レバーを軸支し、一端部において前記第１のコイル端子と電気的に接続されるとともに他端部において前記第２のコイル端子と電気的に接続される導電部を少なくとも一部に有する回転軸と、
少なくとも１つの電気素子から構成され、前記第１のコイル端子と前記導電部の一端部との間、及び／又は前記第２のコイル端子と前記導電部の他端部との間に電気的に接続されたサージ吸収器と、
を備えたことを特徴とする電磁接触器。 An electromagnet device comprising first and second coil terminals;
A contact portion;
A lever that is disposed between the electromagnet device and the contact portion and rotates by the action of the electromagnet device to open and close the contact portion;
Rotation that pivotally supports the lever and at least partially includes a conductive portion that is electrically connected to the first coil terminal at one end and electrically connected to the second coil terminal at the other end. The axis,
It is composed of at least one electric element, and electrically between the first coil terminal and one end of the conductive part and / or between the second coil terminal and the other end of the conductive part. Connected surge absorber,
An electromagnetic contactor comprising:

前記回転軸の全部が前記導電部で形成され、前記サージ吸収器は前記第１のコイル端子と前記導電部の一端部との間、及び／又は前記第２のコイル端子と前記導電部の他端部との間に配置されることを特徴とする請求項１記載の電磁接触器。 The rotating shaft is entirely formed by the conductive portion, and the surge absorber is provided between the first coil terminal and one end portion of the conductive portion and / or the second coil terminal and the other conductive portion. The electromagnetic contactor according to claim 1, wherein the electromagnetic contactor is disposed between the ends.

前記サージ吸収器は第１の電気素子と第２の電気素子とを有し、
前記第１の電気素子は前記第１のコイル端子と前記導電部の一端部とにはんだ付けされ、前記第２の電気素子は前記第２のコイル端子と前記導電部の他端部とにはんだ付けされることを特徴とする請求項１または２記載の電磁接触器。 The surge absorber has a first electrical element and a second electrical element;
The first electric element is soldered to the first coil terminal and one end of the conductive part, and the second electric element is soldered to the second coil terminal and the other end of the conductive part. The electromagnetic contactor according to claim 1, wherein the electromagnetic contactor is attached.

前記サージ吸収器を構成する前記電気素子が前記第１のコイル端子と前記導電部の一端部とにはんだ付けされ、所定長さの導線が前記第２のコイル端子と前記導電部の他端部とにはんだ付けされることを特徴とする請求項１または２記載の電磁接触器。 The electric element constituting the surge absorber is soldered to the first coil terminal and one end portion of the conductive portion, and a predetermined length of the conductive wire is the second coil terminal and the other end portion of the conductive portion. The electromagnetic contactor according to claim 1, wherein the magnetic contactor is soldered to the magnetic contactor.