JP4941609B2 - Electromagnetic relay - Google Patents

Electromagnetic relay Download PDF

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JP4941609B2
JP4941609B2 JP2011174101A JP2011174101A JP4941609B2 JP 4941609 B2 JP4941609 B2 JP 4941609B2 JP 2011174101 A JP2011174101 A JP 2011174101A JP 2011174101 A JP2011174101 A JP 2011174101A JP 4941609 B2 JP4941609 B2 JP 4941609B2
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fixed contact
contacts
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JP2011222534A (en
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政直 杉澤
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Denso Electronics Corp
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Anden Co Ltd
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Description

本発明は、電気回路を開閉する電磁継電器に関する。   The present invention relates to an electromagnetic relay that opens and closes an electric circuit.

特許文献１に示された従来の電磁継電器は、それぞれ固定接点を有する２つの固定接点保持部材を位置決めし、２つの可動接点が装着された１つの可動子を移動させて、可動接点と固定接点とを接離させることにより、電気回路を開閉するようになっている。より詳細には、コイルの電磁力により駆動される可動部材、固定接点と可動接点とが当接する向きに可動子を付勢する接圧ばね、固定接点と可動接点とが離れる向きに可動部材を介して可動子を付勢する復帰ばね等を備えている。また、可動接点および固定接点の接触面は球面になっている。   The conventional electromagnetic relay disclosed in Patent Document 1 positions two fixed contact holding members each having a fixed contact, moves one movable element on which the two movable contacts are mounted, and moves the movable contact and the fixed contact. The electrical circuit is opened and closed by contacting and separating. More specifically, the movable member driven by the electromagnetic force of the coil, the contact pressure spring that urges the movable element in the direction in which the fixed contact and the movable contact abut, the movable member in the direction in which the fixed contact and the movable contact are separated from each other. And a return spring for urging the mover. The contact surfaces of the movable contact and the fixed contact are spherical.

そして、コイルに通電されると、電磁力により可動部材は可動子から遠ざかる向きに駆動され、可動子が接圧ばねに付勢されて移動して固定接点と可動接点とが当接するとともに、可動部材と可動子とが離れるように構成されている。   When the coil is energized, the movable member is driven away from the mover by electromagnetic force, and the mover is urged and moved by the contact pressure spring so that the fixed contact and the movable contact come into contact with each other. It is comprised so that a member and a needle | mover may leave | separate.

また、特許文献２に示された従来の電磁継電器は、それぞれ固定接点を有する２つの固定接点保持部材を位置決めし、２つの可動接点が装着された１つの可動子を移動させて、可動接点と固定接点とを接離させることにより、電気回路を開閉するようになっている。より詳細には、コイルの電磁力により駆動される可動部材に可動子が相対移動可能な状態で一体化され、可動子は接圧ばねによって可動部材の所定位置に保持され、可動部材および可動子は固定接点と可動接点とが離れる向きに復帰ばねによって付勢されている。また、可動接点および固定接点の接触面は球面になっている。   In addition, the conventional electromagnetic relay disclosed in Patent Document 2 positions two fixed contact holding members each having a fixed contact, moves one movable element having two movable contacts mounted thereon, The electric circuit is opened and closed by bringing the fixed contact into and out of contact. More specifically, the movable element is integrated with the movable member driven by the electromagnetic force of the coil in a state in which the movable element is relatively movable, and the movable element is held at a predetermined position of the movable member by the contact pressure spring. Is biased by a return spring in a direction in which the fixed contact and the movable contact are separated. The contact surfaces of the movable contact and the fixed contact are spherical.

そして、コイルに通電されると、電磁力により可動部材および可動子が駆動されて固定接点と可動接点とが当接する。その際、固定接点と可動接点とが当接後の可動部材の移動ストロークの分だけ接圧ばねが撓むことにより、可動部材と可動子が相対移動するようになっている。   When the coil is energized, the movable member and the mover are driven by electromagnetic force, and the fixed contact and the movable contact come into contact with each other. At that time, the movable member and the mover move relative to each other when the contact pressure spring is bent by an amount corresponding to the moving stroke of the movable member after the fixed contact and the movable contact are in contact with each other.

特開２００８−２２６５４７号公報JP 2008-226547 A 特開昭６２−５１１２６号公報JP-A-62-51126

しかしながら、特許文献１に示された電磁継電器は、可動接点および固定接点の接触面は球面であるため点接触となり、また、コイルに通電されて固定接点と可動接点とが当接した際、一方の固定接点と可動接点との接触部、および他方の固定接点と可動接点との接触部の２点接触となる。このように、点接触であり、且つ２点接触であるため、固定接点に可動接点が衝突した際に２つの接触部を通る線を軸にして可動子が揺動（振動）しやすい。特に、特許文献１に示された電磁継電器は、固定接点と可動接点とが当接すると可動部材と可動子とが離れるため、可動部材による制振作用が得られず、したがって可動子の揺動が収束しにくい。そして、可動子の揺動により筐体内で共鳴して異音が発生するという問題があった。   However, the electromagnetic relay disclosed in Patent Document 1 is a point contact because the contact surface of the movable contact and the fixed contact is spherical, and when the coil contacts with the fixed contact and the movable contact, The contact portion between the fixed contact and the movable contact and the contact portion between the other fixed contact and the movable contact. Thus, since it is a point contact and a two-point contact, when the movable contact collides with the fixed contact, the movable element easily swings (vibrates) around the line passing through the two contact portions. In particular, in the electromagnetic relay disclosed in Patent Document 1, the movable member and the mover are separated from each other when the fixed contact and the movable contact come into contact with each other. Is difficult to converge. In addition, there is a problem that abnormal noise is generated due to resonance in the casing due to the swing of the mover.

また、特許文献２に示された電磁継電器は、可動部材に可動子が一体化されているため、固定接点に可動接点が衝突した際の可動子の揺動は収束し易い。しかしながら、可動子の揺動が収束するまでの間は、可動子の揺動に伴って接触部の接触位置が変化するため、接点間の抵抗値が変化し、それにより接触部が発熱しやすくなり、接点が消耗しやすいという問題があった。   Further, in the electromagnetic relay disclosed in Patent Document 2, since the mover is integrated with the movable member, the swinging of the mover when the movable contact collides with the fixed contact easily converges. However, since the contact position of the contact portion changes as the mover swings until the swing of the mover converges, the resistance value between the contacts changes, and the contact portion easily generates heat. Therefore, there is a problem that the contacts are easily consumed.

本発明は上記点に鑑みて、固定接点保持部材と可動子とが当接すると可動部材と可動子とが離れる型式の電磁継電器において、可動子の揺動による異音の発生を防止することを第１の目的とする。また、可動子の揺動による接点の消耗を防止することを第２の目的とする。   In view of the above points, the present invention provides an electromagnetic relay of a type in which the movable member and the movable element are separated from each other when the fixed contact holding member and the movable element come into contact with each other. The first purpose. It is a second object of the present invention to prevent contact consumption due to swinging of the mover.

上記目的を達成するため、請求項１に記載の発明では、構成部品を収容するケース（１０）と、通電時に電磁力を発生するコイル（１８）と、コイル（１８）の電磁力により駆動される可動部材（２２、２５、２６）と、第１固定接点（１７ａ）を有する第１固定接触部材（１６ａ）と、第２固定接点（１７ｂ）を有する第２固定接触部材（１６ｂ）と、両固定接触部材（１６ａ、１６ｂ）と接離する１つの可動子（２７）と、両固定接触部材（１６ａ、１６ｂ）と可動子（２７）とが当接する向きに可動子（２７）を付勢する接圧ばね（２８）と、両固定接触部材（１６ａ、１６ｂ）と可動子（２７）とが離れる向きに、可動部材（２２、２５、２６）を介して可動子（２７）を付勢する復帰ばね（２３）とを備え、コイル（１８）の電磁力により可動部材（２２、２５、２６）が駆動されたときには、第１固定接点（１７ａ）と可動子（２７）とが第１接触部で点接触し、第２固定接点（１７ｂ）と可動子（２７）とが第２接触部で点接触するように構成された電磁継電器において、第２固定接触部材（１６ｂ）に第３固定接点（１７ｃ）が設けられており、第１、第２固定接点（１７ａ、１７ｂ）と可動子（２７）とが接触している際に、第３固定接点（１７ｃ）と可動子（２７）とが第３接触部で点接触するように構成され、第１接触部と第２接触部は、可動子（２７）の移動方向に見たときに、可動子（２７）に対する１個または複数個の接圧ばね（２８）が作用する力の重心が第１接触部と第２接触部を通る線よりも第３接触部側に位置するように配置され、かつ第１〜第３接触部は、可動子（２７）の移動方向に見たときに、第１〜第３接触部で囲まれる三角形の領域内に前記接圧ばね（２８）が作用する力の重心が位置するように配置されている電磁継電器であって、第１固定接触部材（１６ａ）と第２固定接触部材（１６ｂ）は、ケース（１０）に固定され、それぞれの一端側がケース（１０）の内部に形成された収納空間（１０ａ）内に位置しており、第２固定接点（１７ｂ）と第３固定接点（１７ｃ）は、第２固定接触部材（１６ｂ）の一端側においてその長手方向に離間して配置されていることを特徴とする。 In order to achieve the above object, according to the first aspect of the present invention, the case (10) that accommodates the components, the coil (18) that generates an electromagnetic force when energized, and the electromagnetic force of the coil (18) are driven. A movable member (22, 25, 26), a first fixed contact member (16a) having a first fixed contact (17a), a second fixed contact member (16b) having a second fixed contact (17b) , One movable element (27) that contacts and separates both the fixed contact members (16a, 16b), and the movable element (27) in the direction in which both the fixed contact members (16a, 16b) and the movable element (27) contact each other. The movable element (27) is attached via the movable members (22, 25, 26) so that the contact pressure spring (28) to be energized and the fixed contact members (16a, 16b) and the movable element (27) are separated from each other. A return spring (23) for energizing the coil (18) When the movable member (22, 25, 26) is driven, the first fixed contact and (17a) and the movable element (27) is in point contact with the first contact portion, a second fixed contact (17b) movable element by In the electromagnetic relay configured to make point contact with (27) at the second contact portion, the third fixed contact (17c) is provided on the second fixed contact member (16b), and the first and second fixed contacts are provided. When the contacts (17a, 17b) and the mover (27) are in contact with each other, the third fixed contact (17c) and the mover (27) are configured to make point contact at the third contact portion. When the first contact portion and the second contact portion are viewed in the moving direction of the mover (27), the center of gravity of the force that the one or more contact pressure springs (28) act on the mover (27) is first. It arrange | positions so that it may be located in the 3rd contact part side rather than the line | wire which passes 1 contact part and 2nd contact part, and 1st When the third contact portion is viewed in the moving direction of the mover (27), the center of gravity of the force acting on the contact pressure spring (28) is located in a triangular region surrounded by the first to third contact portions. The first fixed contact member (16a) and the second fixed contact member (16b) are fixed to the case (10), and one end side of each is located inside the case (10). The second fixed contact (17b) and the third fixed contact (17c) are spaced apart in the longitudinal direction at one end side of the second fixed contact member (16b). It is characterized by being arranged .

これによると、コイル（１８）の電磁力により可動部材（２２、２５、２６）が駆動されたときには、可動子（２７）が３点で接触するため、両固定接触部材（１６ａ、１６ｂ）と可動子（２７）が衝突した際の可動子（２７）の揺動が防止され、ひいては可動子（２７）の揺動による異音の発生が防止される。   According to this, when the movable member (22, 25, 26) is driven by the electromagnetic force of the coil (18), the movable element (27) comes into contact at three points, so that both the fixed contact members (16a, 16b) and Oscillation of the movable element (27) when the movable element (27) collides is prevented, and consequently generation of abnormal noise due to the oscillation of the movable element (27) is prevented.

請求項２に記載の発明では、請求項１に記載の電磁継電器において、可動子（２７）は、第１、第２、第３可動接点（２９ａ、２９ｂ、２９ｃ）を有しており、第１可動接点（２９ａ）と第１固定接点（１７ａ）とが第１接触部で点接触し、第２可動接点（２９ｂ）と第２固定接点（１７ｂ）とが第２接触部で点接触し、第３可動接点（２９ｃ）と第３固定接点（１７ｃ）とが第３接触部で点接触することを特徴とする。 According to a second aspect of the present invention, in the electromagnetic relay according to the first aspect, the movable element (27) includes first, second, and third movable contacts (29a, 29b, 29c), The first movable contact (29a) and the first fixed contact (17a) make point contact at the first contact portion, and the second movable contact (29b) and the second fixed contact (17b) make point contact at the second contact portion. The third movable contact (29c) and the third fixed contact (17c) are point-contacted at the third contact portion.

請求項３に記載の発明では、構成部品を収容するケース（１０）と、通電時に電磁力を発生するコイル（１８）と、コイル（１８）の電磁力により駆動される可動部材（２２、２５、２６）と、第１固定接点（１７ａ）を有する第１固定接点保持部材（１６ａ）と、第２固定接点（１７ｂ）を有する第２固定接点保持部材（１６ｂ）と、第１、第２固定接点（１７ａ、１７ｂ）とそれぞれ接離する第１、第２可動接点（２９ａ、２９ｂ）を有する１つの可動子（２７）と、第１、第２固定接点（１７ａ、１７ｂ）と第１、第２可動接点（２９ａ、２９ｂ）とが当接する向きに可動子（２７）を付勢する接圧ばね（２８）と、第１、第２固定接点（１７ａ、１７ｂ）と第１、第２可動接点（２９ａ、２９ｂ）とが離れる向きに、可動部材（２２、２５、２６）を介して可動子（２７）を付勢する復帰ばね（２３）とを備え、コイル（１８）の電磁力により可動部材（２２、２５、２６）が駆動されたときには、第１、第２固定接点（１７ａ、１７ｂ）と第１、第２可動接点（２９ａ、２９ｂ）とが当接するとともに、可動部材（２２、２５、２６）と可動子（２７）とが離れるように構成された電磁継電器において、第２固定接点保持部材（１６ｂ）に設けられた第３固定接点（１７ｃ）と、可動子（２７）に設けられ、第１、第２固定接点（１７ａ、１７ｂ）と第１、第２可動接点（２９ａ、２９ｂ）とが当接している際に第３固定接点（１７ｃ）に当接する第３可動接点（２９ｃ）とを備え、第１、第２可動接点（２９ａ、２９ｂ）は、可動子（２７）の移動方向に見たときに、可動子（２７）に対する１個または複数個の接圧ばね（２８）が作用する力の重心が第１、第２可動接点（２９ａ、２９ｂ）を通る線よりも第３可動接点（２９ｃ）側に位置するように配置され、かつ第１〜第３可動接点（２９ａ、２９ｂ、２９ｃ）は、可動子（２７）の移動方向に見たときに、第１〜第３可動接点（２９ａ、２９ｂ、２９ｃ）で囲まれる三角形の領域内に前記接圧ばね（２８）が作用する力の重心が位置するように配置されている電磁継電器であって、第１固定接点保持部材（１６ａ）と第２固定接点保持部材（１６ｂ）は、ケース（１０）に固定され、それぞれの一端側がケース（１０）の内部に形成された収納空間（１０ａ）内に位置しており、第２固定接点（１７ｂ）と第３固定接点（１７ｃ）は、第２固定接点保持部材（１６ｂ）の一端側においてその長手方向に離間して配置されていることを特徴とする。
In the invention according to claim 3, the case (10) that houses the component parts, the coil (18) that generates an electromagnetic force when energized, and the movable member (22, 25) driven by the electromagnetic force of the coil (18). 26), a first fixed contact holding member (16a) having a first fixed contact (17a), a second fixed contact holding member (16b) having a second fixed contact (17b), and first and second One movable element (27) having first and second movable contacts (29a, 29b) that come into and out of contact with the fixed contacts (17a, 17b), and the first and second fixed contacts (17a, 17b) , A contact pressure spring (28) for urging the mover (27) in a direction in which the second movable contact (29a, 29b) abuts, a first and a second fixed contact (17a, 17b) and a first, a first 2 Move the movable member (22) in the direction away from the movable contact (29a, 29b). And a return spring (23) for urging the mover (27) via the first and second movable members (25, 26), and when the movable member (22, 25, 26) is driven by the electromagnetic force of the coil (18), The second fixed contact (17a, 17b) and the first and second movable contacts (29a, 29b) are in contact with each other, and the movable member (22, 25, 26) and the movable element (27) are separated from each other. In the electromagnetic relay, the third fixed contact (17c) provided on the second fixed contact holding member (16b) and the first and second fixed contacts (17a, 17b) provided on the mover (27) A third movable contact (29c) that contacts the third fixed contact (17c) when the first and second movable contacts (29a, 29b) are in contact with each other; 29b) when viewed in the moving direction of the mover (27), The center of gravity of the force acting on one or more contact pressure springs (28) on the moving element (27) is closer to the third movable contact (29c) than the line passing through the first and second movable contacts (29a, 29b). The first to third movable contacts (29a, 29b, 29c) are arranged so as to be located in the moving direction of the movable element (27). 29c) is an electromagnetic relay arranged so that the center of gravity of the force acting on the contact pressure spring (28) is located within a triangular area surrounded by the first fixed contact holding member (16a) and the first The two fixed contact holding members (16b) are fixed to the case (10), and one end sides of the two fixed contact holding members (16b) are located in the storage space (10a) formed inside the case (10). ) And the third fixed contact (17c) hold the second fixed contact The member (16b) is arranged so as to be spaced apart in the longitudinal direction on one end side of the member (16b) .

なお、この欄および特許請求の範囲で記載した各手段の括弧内の符号は、後述する実施形態に記載の具体的手段との対応関係を示すものである。   In addition, the code | symbol in the bracket | parenthesis of each means described in this column and the claim shows the correspondence with the specific means as described in embodiment mentioned later.

本発明の第１実施形態に係る電磁継電器を示す断面図である。It is sectional drawing which shows the electromagnetic relay which concerns on 1st Embodiment of this invention. 図１のＡ−Ａ線に沿う断面図である。It is sectional drawing which follows the AA line of FIG. 図１のＢ−Ｂ線に沿う断面図である。It is sectional drawing which follows the BB line of FIG. 図１のＣ−Ｃ線に沿う断面図である。It is sectional drawing which follows the CC line of FIG. 図１の第３ケース１３および第３ケース１３に一体化された構成部品を示す図である。It is a figure which shows the component integrated with the 3rd case 13 and the 3rd case 13 of FIG. 本発明の第２実施形態に係る電磁継電器の要部を示す図である。It is a figure which shows the principal part of the electromagnetic relay which concerns on 2nd Embodiment of this invention. 図６に可動子２７を付加した図である。It is the figure which added the needle | mover 27 to FIG. 本発明の第３実施形態に係る電磁継電器を示す断面図である。It is sectional drawing which shows the electromagnetic relay which concerns on 3rd Embodiment of this invention. 図８に可動子２７を付加した図である。It is the figure which added the needle | mover 27 to FIG. 接点間閉成状態を示す図９のＧ−Ｇ線に沿う断面図である。It is sectional drawing which follows the GG line of FIG. 9 which shows the closed state between contacts. 接点間開離状態を示す図９のＧ−Ｇ線に沿う断面図である。It is sectional drawing which follows the GG line | wire of FIG. 9 which shows the separation state between contacts. 第３実施形態の変型例を示す要部の断面図である。It is sectional drawing of the principal part which shows the modification of 3rd Embodiment. 本発明の第４実施形態に係る電磁継電器を一部破断して示す下面図である。It is a bottom view which shows a partially broken electromagnetic relay according to a fourth embodiment of the present invention. 本発明の第５実施形態に係る電磁継電器を示す側面断面図である。It is side surface sectional drawing which shows the electromagnetic relay which concerns on 5th Embodiment of this invention. 図１４のＨ−Ｈ線に沿う断面図である。It is sectional drawing which follows the HH line | wire of FIG. 図１４のＩ−Ｉ線に沿う断面図である。It is sectional drawing which follows the II line | wire of FIG.

以下、本発明の実施形態について図に基づいて説明する。なお、以下の各実施形態相互において、互いに同一もしくは均等である部分には、図中、同一符号を付してある。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, the same or equivalent parts are denoted by the same reference numerals in the drawings.

（第１実施形態）
図１、図２に示すように、本実施形態に係る電磁継電器は、樹脂製の直方体のケース１０を備え、ケース１０は、有底筒状の第１ケース１１、有底筒状の第２ケース１２、第１ケース１１と第２ケース１２との間に配置された第３ケース１３、および有底筒状の樹脂カバー１５とからなる。このケース１０の内部に収容空間１０ａが形成されており、収容空間１０ａは、第１ケース１１に形成された複数の呼吸孔１１１を介してケース１０の外部空間に連通されている。 (First embodiment)
As shown in FIGS. 1 and 2, the electromagnetic relay according to the present embodiment includes a resin-made rectangular parallelepiped case 10, and the case 10 includes a bottomed cylindrical first case 11 and a bottomed cylindrical second. It consists of a case 12, a third case 13 disposed between the first case 11 and the second case 12, and a bottomed cylindrical resin cover 15. A housing space 10 a is formed inside the case 10, and the housing space 10 a is communicated with an external space of the case 10 through a plurality of breathing holes 111 formed in the first case 11.

樹脂カバー１５の内側には、音や振動を遮断するためにゴムカバー１４が嵌合されている。ゴムカバー１４および樹脂カバー１５は、一端が開口した有底筒状の直方体になっており、ケース１０における呼吸孔１１１が開口していない５つの面が、ゴムカバー１４および樹脂カバー１５によって覆われている。   A rubber cover 14 is fitted inside the resin cover 15 in order to block sound and vibration. The rubber cover 14 and the resin cover 15 have a bottomed cylindrical rectangular parallelepiped with one end opened, and five surfaces of the case 10 where the breathing hole 111 is not opened are covered with the rubber cover 14 and the resin cover 15. ing.

第３ケース１３には、導電金属製の２つの固定接触部材をなす固定接点保持部材１６が固定されている。固定接点保持部材１６は、ケース１０を貫通していて、一端側が収容空間１０ａ内に位置し、他端側が外部空間に位置している。なお、２つの固定接点保持部材１６は、後述するように具体的構成が異なっており、以下の説明では必要に応じて一方を第１固定接点保持部材１６ａ、他方を第２固定接点保持部材１６ｂという。   A fixed contact holding member 16 constituting two fixed contact members made of conductive metal is fixed to the third case 13. The fixed contact holding member 16 penetrates the case 10, and one end side is located in the accommodation space 10 a and the other end side is located in the external space. The two fixed contact holding members 16 have different specific configurations as will be described later. In the following description, one is a first fixed contact holding member 16a and the other is a second fixed contact holding member 16b as necessary. That's it.

固定接点保持部材１６における外部空間側には、外部ハーネス（図示せず）と接続される負荷回路端子１６１が形成されている。そして、いずれか一方の固定接点保持部材１６の負荷回路端子１６１は、外部ハーネスを介して電源（図示せず）に接続され、他方の固定接点保持部材１６の負荷回路端子１６１は、外部ハーネスを介して電気負荷（図示せず）に接続される。   A load circuit terminal 161 connected to an external harness (not shown) is formed on the external space side of the fixed contact holding member 16. The load circuit terminal 161 of one of the fixed contact holding members 16 is connected to a power source (not shown) via an external harness, and the load circuit terminal 161 of the other fixed contact holding member 16 is connected to the external harness. Via an electrical load (not shown).

図３〜図５に示すように、第１固定接点保持部材１６ａにおける収容空間１０ａ側の端部には、導電金属製の第１固定接点１７ａがかしめ固定されている。第２固定接点保持部材１６ｂにおける収容空間１０ａ側の端部には、導電金属製の第２固定接点１７ｂ、および導電金属製の第３固定接点１７ｃがかしめ固定されている。なお、第３固定接点１７ｃは、本発明の固定側当接部材に相当する。   As shown in FIGS. 3 to 5, a first fixed contact 17 a made of conductive metal is caulked and fixed to an end of the first fixed contact holding member 16 a on the side of the accommodation space 10 a. A second fixed contact 17b made of conductive metal and a third fixed contact 17c made of conductive metal are caulked and fixed to the end of the second fixed contact holding member 16b on the housing space 10a side. The third fixed contact 17c corresponds to the fixed-side contact member of the present invention.

ここで、第１固定接点１７ａと第２固定接点１７ｂの各中心を通る線を固定接点接続線Ｄとすると、第１固定接点１７ａと第２固定接点１７ｂは、可動子２７の移動方向に見たときに（図５の状態）、固定接点中心接続線Ｄが、可動子２７に対する接圧ばね２８が作用する力の重心Ｅを通り、且つ重心Ｅの両側に位置するように、配置されている。また、第３固定接点１７ｃは、可動子２７の移動方向に見たときに、固定接点中心接続線Ｄからずれた位置に配置されている。   Here, if a line passing through the centers of the first fixed contact 17a and the second fixed contact 17b is a fixed contact connection line D, the first fixed contact 17a and the second fixed contact 17b are viewed in the moving direction of the movable element 27. (State of FIG. 5), the fixed contact center connection line D is disposed so as to pass through the gravity center E of the force acting on the contact spring 28 against the movable element 27 and to be located on both sides of the gravity center E. Yes. Further, the third fixed contact 17 c is disposed at a position shifted from the fixed contact center connection line D when viewed in the moving direction of the mover 27.

図１、図２に示すように、第１ケース１１内には、通電時に電磁力を発生する円筒状のコイル１８が配置されており、このコイル１８には導電金属製の２つのコイル端子１９が接続されている。コイル端子１９の一端はケース１０の外部に延びていて、外部ハーネスを介してＥＣＵ（図示せず）に接続されており、その外部ハーネスおよびコイル端子１９を介してコイル１８に通電されるようになっている。   As shown in FIGS. 1 and 2, a cylindrical coil 18 that generates electromagnetic force when energized is disposed in the first case 11, and the coil 18 has two coil terminals 19 made of conductive metal. Is connected. One end of the coil terminal 19 extends outside the case 10 and is connected to an ECU (not shown) via an external harness so that the coil 18 is energized via the external harness and the coil terminal 19. It has become.

コイル１８の内周側空間には、磁性体金属材料よりなる固定コア２０が配置され、コイル１８の軸方向一端側および外周側には、磁性体金属材料よりなるヨーク２１が配置されている。ヨーク２１は、その両端が第２ケース１２に嵌合して第２ケース１２に固定されている。固定コア２０は、ヨーク２１に保持されている。   A fixed core 20 made of a magnetic metal material is arranged in the inner circumferential space of the coil 18, and a yoke 21 made of a magnetic metal material is arranged on one end side and the outer circumferential side of the coil 18 in the axial direction. The yoke 21 is fixed to the second case 12 by fitting both ends thereof into the second case 12. The fixed core 20 is held by the yoke 21.

コイル１８の内周側空間および第３ケース１３内において、固定コア２０に対向する位置には、磁性体金属製の可動コア２２が配置されている。また、固定コア２０と可動コア２２との間には、可動コア２２を反固定コア側に付勢する復帰ばね２３が配置されている。そして、コイル通電時には、可動コア２２は復帰ばね２３に抗して固定コア２０側に吸引される。   A movable core 22 made of magnetic metal is disposed at a position facing the fixed core 20 in the inner circumferential space of the coil 18 and in the third case 13. A return spring 23 is disposed between the fixed core 20 and the movable core 22 to urge the movable core 22 toward the anti-fixed core. When the coil is energized, the movable core 22 is attracted toward the fixed core 20 against the return spring 23.

コイル１８の軸方向他端側には、磁性体金属材料よりなる鍔付き円筒状のプレート２４が配置されており、可動コア２２はこのプレート２４に摺動自在に保持されている。なお、固定コア２０、ヨーク２１、可動コア２２およびプレート２４は、コイル１８により誘起された磁束の磁路を構成する。   On the other end side in the axial direction of the coil 18, a cylindrical plate 24 with a flange made of a magnetic metal material is disposed, and the movable core 22 is slidably held on the plate 24. Note that the fixed core 20, the yoke 21, the movable core 22, and the plate 24 constitute a magnetic path of magnetic flux induced by the coil 18.

可動コア２２には、金属製のシャフト２５が貫通して固定されている。シャフト２５の一端は第３ケース１３内まで延びており、このシャフト２５の一端側の端部には、電気絶縁性に富む樹脂よりなる絶縁碍子２６が嵌合して固定されている。この絶縁碍子２６は第３ケース１３内に位置している。なお、可動コア２２、シャフト２５、および絶縁碍子２６は、本発明の可動部材を構成する。   A metal shaft 25 penetrates and is fixed to the movable core 22. One end of the shaft 25 extends into the third case 13, and an insulator 26 made of resin having high electrical insulation is fitted and fixed to an end portion on one end side of the shaft 25. The insulator 26 is located in the third case 13. In addition, the movable core 22, the shaft 25, and the insulator 26 constitute a movable member of the present invention.

第３ケース１３内には、導電金属製の板状の可動子２７が配置されている。この可動子２７と第２ケース１２との間には、可動子２７をシャフト２５側に付勢する接圧ばね２８が配置されている。   In the third case 13, a plate-shaped movable element 27 made of conductive metal is disposed. A contact pressure spring 28 that biases the mover 27 toward the shaft 25 is disposed between the mover 27 and the second case 12.

可動子２７には、第１固定接点１７ａに対向する位置に導電金属製の第１可動接点２９ａがかしめ固定され、第２固定接点１７ｂに対向する位置に導電金属製の第２可動接点２９ｂがかしめ固定され、さらに、第３固定接点１７ｃに対向する位置に導電金属製の第３可動接点２９ｃがかしめ固定されている。なお、第３可動接点２９ｃは、本発明の移動側当接部材に相当する。   A first movable contact 29a made of conductive metal is caulked and fixed to the movable element 27 at a position facing the first fixed contact 17a, and a second movable contact 29b made of conductive metal is fixed at a position opposed to the second fixed contact 17b. The third movable contact 29c made of conductive metal is caulked and fixed at a position facing the third fixed contact 17c. The third movable contact 29c corresponds to the moving side contact member of the present invention.

また、可動コア２２等が電磁力により固定コア２０側に駆動されたときには、３つの固定接点１７ａ〜１７ｃと３つの可動接点２９ａ〜２９ｃとが当接する。そして、第１固定接点１７ａと第１可動接点２９ａとの接触部が本発明の第１接触部に相当し、第２固定接点１７ｂと第２可動接点２９ｂとの接触部が本発明の第２接触部に相当し、第３固定接点１７ｃと第３可動接点２９ｃとの接触部が本発明の第３接触部に相当する。   Further, when the movable core 22 and the like are driven to the fixed core 20 side by electromagnetic force, the three fixed contacts 17a to 17c and the three movable contacts 29a to 29c come into contact with each other. The contact portion between the first fixed contact 17a and the first movable contact 29a corresponds to the first contact portion of the present invention, and the contact portion between the second fixed contact 17b and the second movable contact 29b is the second contact according to the present invention. The contact portion corresponds to the contact portion, and the contact portion between the third fixed contact 17c and the third movable contact 29c corresponds to the third contact portion of the present invention.

ここで、第１可動接点２９ａと第２可動接点２９ｂの各中心を通る線を可動接点中心接続線Ｆとすると、第１可動接点２９ａと第２可動接点２９ｂは、可動子２７の移動方向に見たときに（図２の状態）、可動接点中心接続線Ｆが接圧ばね２８の重心Ｅを通り、且つ重心Ｅの両側に位置するように、配置されている。また、第３可動接点２９ｃは、可動子２７の移動方向に見たときに、可動接点中心接続線Ｆからずれた位置に配置されている。   Here, if a line passing through the centers of the first movable contact 29a and the second movable contact 29b is a movable contact center connection line F, the first movable contact 29a and the second movable contact 29b are moved in the moving direction of the movable element 27. When viewed (state of FIG. 2), the movable contact center connection line F is disposed so as to pass through the center of gravity E of the contact pressure spring 28 and on both sides of the center of gravity E. Further, the third movable contact 29 c is arranged at a position shifted from the movable contact center connection line F when viewed in the moving direction of the mover 27.

換言すると、第３接触部は、可動子２７の移動方向に見たときに、第１接触部と第２接触部を通る線（すなわち、固定接点中心接続線Ｄや可動接点中心接続線Ｆ）からずれている。   In other words, the third contact portion is a line passing through the first contact portion and the second contact portion when viewed in the moving direction of the movable element 27 (that is, the fixed contact center connection line D and the movable contact center connection line F). It is off.

また、各固定接点１７ａ〜１７ｃおよび各可動接点２９ａ〜２９ｃは、各固定接点１７ａ〜１７ｃと各可動接点２９ａ〜２９ｃとの接触部の抵抗を小さくするために、固定接点保持部材１６および可動子２７よりも電気抵抗が小さい材料よりなる。   In addition, each of the fixed contacts 17a to 17c and each of the movable contacts 29a to 29c has a fixed contact holding member 16 and a mover in order to reduce the resistance of the contact portion between each of the fixed contacts 17a to 17c and each of the movable contacts 29a to 29c. It is made of a material having an electric resistance smaller than 27.

次に、本実施形態に係る電磁継電器の作動を説明する。まず、コイル１８に通電すると、可動コア２２、シャフト２５、および絶縁碍子２６が、電磁力により復帰ばね２３に抗して固定コア２０側に吸引され、可動子２７は接圧ばね２８に付勢されて可動コア２２等に追従して移動する。これにより、３つの可動接点２９ａ〜ｃが３つの固定接点１７ａ〜ｃに当接し、２つの負荷回路端子１６１間が導通する。因みに、３つの可動接点２９ａ〜ｃが３つの固定接点１７ａ〜ｃに当接した後、さらに可動コア２２等が固定コア２０側に向かって移動し、絶縁碍子２６と可動子２７は離れる。   Next, the operation of the electromagnetic relay according to this embodiment will be described. First, when the coil 18 is energized, the movable core 22, the shaft 25, and the insulator 26 are attracted to the fixed core 20 side against the return spring 23 by electromagnetic force, and the mover 27 is biased to the contact pressure spring 28. Then, it moves following the movable core 22 and the like. As a result, the three movable contacts 29a to 29c come into contact with the three fixed contacts 17a to 17c, and the two load circuit terminals 161 are electrically connected. Incidentally, after the three movable contacts 29a to 29c contact the three fixed contacts 17a to 17c, the movable core 22 and the like further move toward the fixed core 20, and the insulator 26 and the movable element 27 are separated.

ここで、可動コア２２等が電磁力により固定コア２０側に駆動されたときには、第１固定接点１７ａと第１可動接点２９ａとの接触部、第２固定接点１７ｂと第２可動接点２９ｂとの接触部、および第３固定接点１７ｃと第３可動接点２９ｃとの接触部の３点接触となるため、３つの可動接点２９ａ〜ｃが３つの固定接点１７ａ〜ｃに衝突した際の可動子２７の揺動が防止される。   Here, when the movable core 22 or the like is driven to the fixed core 20 side by electromagnetic force, the contact portion between the first fixed contact 17a and the first movable contact 29a and the second fixed contact 17b and the second movable contact 29b Since the contact portion and the contact portion between the third fixed contact 17c and the third movable contact 29c are three-point contact, the movable element 27 when the three movable contacts 29a to 29c collide with the three fixed contacts 17a to 17c. Is prevented from swinging.

一方、コイル１８への通電が遮断されると、復帰ばね２３により接圧ばね２８に抗して可動コア２２等や可動子２７が反固定コア側に付勢される。これにより、３つの可動接点２９ａ〜ｃが３つの固定接点１７ａ〜ｃから離され、２つの負荷回路端子１６１間が遮断される。   On the other hand, when the power supply to the coil 18 is cut off, the movable core 22 and the movable element 27 are biased toward the anti-fixed core side by the return spring 23 against the contact pressure spring 28. Thereby, the three movable contacts 29a to 29c are separated from the three fixed contacts 17a to 17c, and the two load circuit terminals 161 are disconnected.

以上述べたように、本実施形態によると、可動コア２２等が固定コア２０側に駆動されたときには、３つの可動接点２９ａ〜ｃと３つの固定接点１７ａ〜ｃが接触して３点接触となるため、３つの可動接点２９ａ〜ｃが３つの固定接点１７ａ〜ｃに衝突した際の可動子２７の揺動が防止され、ひいては可動子２７の揺動による異音および各接点１７ａ〜ｃ、２９ａ〜ｃの消耗が防止される。   As described above, according to the present embodiment, when the movable core 22 or the like is driven to the fixed core 20 side, the three movable contacts 29a to 29c and the three fixed contacts 17a to 17c are brought into contact with each other to make a three-point contact. Therefore, the swing of the movable element 27 when the three movable contacts 29a to 29c collide with the three fixed contacts 17a to 17c is prevented, and as a result, abnormal noise caused by the swing of the movable element 27 and the respective contacts 17a to 17c, Consumption of 29a-c is prevented.

（第２実施形態）
本実施形態は、３つの可動接点２９ａ〜ｃおよび３つの固定接点１７ａ〜ｃの配置を変更したものである。なお、その他に関しては第１実施形態と同様であるため、異なる部分についてのみ説明する。 (Second Embodiment)
In the present embodiment, the arrangement of the three movable contacts 29a to 29c and the three fixed contacts 17a to 17c is changed. In addition, since it is the same as that of 1st Embodiment regarding others, only a different part is demonstrated.

図６に示すように、第１固定接点１７ａと第２固定接点１７ｂは、可動子２７の移動方向に見たときに（図６の状態）、固定接点中心接続線Ｄが重心Ｅを通らない位置に配置されている。また、３つの固定接点１７ａ〜ｃは、可動子２７の移動方向に見たときに、３つの固定接点１７ａ〜ｃの各中心を結んだ三角形の領域内に重心Ｅが位置するように配置されている。   As shown in FIG. 6, the fixed contact center connection line D does not pass through the center of gravity E when the first fixed contact 17 a and the second fixed contact 17 b are viewed in the moving direction of the mover 27 (state of FIG. 6). Placed in position. Further, the three fixed contacts 17a to 17c are arranged so that the center of gravity E is located in a triangular region connecting the centers of the three fixed contacts 17a to 17c when viewed in the moving direction of the movable element 27. ing.

図７に示すように、可動子２７には、第１固定接点１７ａに対向する位置に第１可動接点２９ａが配置され、第２固定接点１７ｂに対向する位置に第２可動接点２９ｂが配置され、さらに、第３固定接点１７ｃに対向する位置に第３可動接点２９ｃが配置されている。換言すると、第１可動接点２９ａと第２可動接点２９ｂは、可動子２７の移動方向に見たときに（図７の状態）、可動接点中心接続線Ｆが重心Ｅを通らない位置に配置されている。また、３つの可動接点２９ａ〜ｃは、可動子２７の移動方向に見たときに、３つの可動接点２９ａ〜ｃの各中心を結んだ三角形の領域内に重心Ｅが位置するように配置されている。   As shown in FIG. 7, on the mover 27, the first movable contact 29a is disposed at a position facing the first fixed contact 17a, and the second movable contact 29b is disposed at a position facing the second fixed contact 17b. Further, a third movable contact 29c is arranged at a position facing the third fixed contact 17c. In other words, the first movable contact 29a and the second movable contact 29b are arranged at a position where the movable contact center connection line F does not pass through the center of gravity E when viewed in the moving direction of the mover 27 (state of FIG. 7). ing. Further, the three movable contacts 29a to 29c are arranged such that the center of gravity E is located in a triangular area connecting the centers of the three movable contacts 29a to 29c when viewed in the moving direction of the movable element 27. ing.

３つの可動接点２９ａ〜ｃおよび３つの固定接点１７ａ〜ｃを上記のように配置したことにより、３つの可動接点２９ａ〜ｃが３つの固定接点１７ａ〜ｃに衝突した際の可動子２７の揺動がより確実に防止される。   By arranging the three movable contacts 29a to 29c and the three fixed contacts 17a to 17c as described above, the movement of the movable element 27 when the three movable contacts 29a to 29c collide with the three fixed contacts 17a to 17c. Movement is more reliably prevented.

（第３実施形態）
本実施形態は、可動接点と固定接点の側方に磁石を配置し、可動接点が固定接点から開離する時に発生するアークにローレンツ力を作用させることにより、アークを引き伸ばして遮断するようにしている。なお、その他に関しては第１実施形態と同様であるため、異なる部分についてのみ説明する。 (Third embodiment)
In this embodiment, a magnet is disposed on the side of the movable contact and the fixed contact, and the Lorentz force is applied to the arc generated when the movable contact is separated from the fixed contact, thereby extending and blocking the arc. Yes. In addition, since it is the same as that of 1st Embodiment regarding others, only a different part is demonstrated.

図８、図９に示すように、第１固定接点１７ａおよび第１可動接点２９ａの側方には、第１可動接点２９ａが第１固定接点１７ａから離れる際に発生するアークに対してローレンツ力を作用させる第１永久磁石３０ａが配置されている。また、第２固定接点１７ｂおよび第２可動接点２９ｂの側方には、第２可動接点２９ｂが第２固定接点１７ｂから離れる際に発生するアークに対してローレンツ力を作用させる第２永久磁石３０ｂが配置されている。   As shown in FIGS. 8 and 9, the Lorentz force is applied to the side of the first fixed contact 17a and the first movable contact 29a against the arc generated when the first movable contact 29a is separated from the first fixed contact 17a. The 1st permanent magnet 30a which acts is arrange | positioned. Further, on the side of the second fixed contact 17b and the second movable contact 29b, a second permanent magnet 30b that causes Lorentz force to act on an arc generated when the second movable contact 29b moves away from the second fixed contact 17b. Is arranged.

より詳細には、これらの永久磁石３０ａ、３０ｂは、可動子２７の移動方向に見たときに（図８、図９の状態）、可動接点中心接続線Ｆの延長線上に配置されている。また、これらの永久磁石３０ａ、３０ｂは、円柱状に形成されており、第３ケース１３の側壁に形成された凹部に挿入されている。   More specifically, these permanent magnets 30a and 30b are arranged on an extension line of the movable contact center connection line F when viewed in the moving direction of the mover 27 (the state shown in FIGS. 8 and 9). Further, these permanent magnets 30 a and 30 b are formed in a columnar shape, and are inserted into recesses formed on the side wall of the third case 13.

ここで、第２固定接点１７ｂおよび第２可動接点２９ｂと第２永久磁石３０ｂとの間の距離よりも、第３固定接点１７ｃおよび第３可動接点２９ｃと第２永久磁石３０ｂとの間の距離が長くなっているため、第３可動接点２９ｃと第３固定接点１７ｃとの間に発生したアークに対して第２永久磁石３０ｂによるローレンツ力が作用し難く、したがってそのアークを確実に消滅させることが困難である。   Here, the distance between the third fixed contact 17c and the third movable contact 29c and the second permanent magnet 30b is larger than the distance between the second fixed contact 17b and the second movable contact 29b and the second permanent magnet 30b. Therefore, the Lorentz force by the second permanent magnet 30b hardly acts on the arc generated between the third movable contact 29c and the third fixed contact 17c. Therefore, the arc can be surely extinguished. Is difficult.

そこで、本実施形態では、アークを確実に消滅させるために以下のようにしている。まず、図１０に示すように、絶縁碍子２６のうち可動子２７に当接する側の端面２６１を可動部材先端面とし、可動子２７のうち可動部材先端面２６１が当接する側の面２７１を可動子押圧面としたとき、可動部材先端面２６１は、接点間閉成状態（すなわち、コイル通電状態）のときの可動子押圧面２７１に対して傾斜している。   Therefore, in the present embodiment, the following is performed in order to surely eliminate the arc. First, as shown in FIG. 10, the end surface 261 of the insulator 26 that comes into contact with the mover 27 is used as a movable member front end surface, and the surface 271 of the mover 27 that comes into contact with the movable member front end surface 261 is movable. When the child pressing surface is used, the movable member front end surface 261 is inclined with respect to the movable member pressing surface 271 when the contact is closed (that is, the coil is energized).

より詳細には、接点間閉成状態のときの可動部材先端面２６１は、第２固定接点１７ｂおよび第３固定接点１７ｃの並び方向（すなわち、第２可動接点２９ｂおよび第３可動接点２９ｃの並び方向。図８〜図１１の紙面上下方向）において、第２固定接点１７ｂ側よりも第３固定接点１７ｃ側の方が、可動子押圧面２７１に近接している。   More specifically, the movable member front end surface 261 in the closed state between the contacts has an arrangement direction of the second fixed contact 17b and the third fixed contact 17c (that is, an arrangement of the second movable contact 29b and the third movable contact 29c). In the direction (vertical direction in FIG. 8 to FIG. 11), the third fixed contact 17c side is closer to the mover pressing surface 271 than the second fixed contact 17b side.

図８に示すように、絶縁碍子２６の断面形状は矩形であり、第３ケース１３において絶縁碍子２６を案内するガイド部１３１内の孔も矩形であり、これにより絶縁碍子２６の回転を防止している。   As shown in FIG. 8, the cross-sectional shape of the insulator 26 is rectangular, and the hole in the guide portion 131 that guides the insulator 26 in the third case 13 is also rectangular, thereby preventing the insulator 26 from rotating. ing.

次に、本実施形態に係る電磁継電器の作動を説明する。まず、コイル１８に通電すると、３つの可動接点２９ａ〜ｃが３つの固定接点１７ａ〜ｃに当接した後、さらに可動コア２２等が固定コア２０側に向かって移動し、図１０に示すように絶縁碍子２６と可動子２７は離れる。   Next, the operation of the electromagnetic relay according to this embodiment will be described. First, when the coil 18 is energized, after the three movable contacts 29a to 29c contact the three fixed contacts 17a to 17c, the movable core 22 and the like further move toward the fixed core 20 side, as shown in FIG. On the other hand, the insulator 26 and the mover 27 are separated.

一方、コイル１８への通電が遮断されると、復帰ばね２３により可動コア２２や絶縁碍子２６等が反固定コア側に駆動される。この際、可動部材先端面２６１のうち、第２固定接点１７ｂおよび第３固定接点１７ｃの並び方向において第３固定接点１７ｃ側が、最初に可動子押圧面２７１に当接する。そして、可動部材先端面２６１が可動子押圧面２７１を押すことにより可動子２７は可動部材先端面２６１に倣って傾く。   On the other hand, when the power supply to the coil 18 is cut off, the movable core 22 and the insulator 26 are driven to the anti-fixed core side by the return spring 23. At this time, the third fixed contact 17c side of the movable member front end surface 261 first comes into contact with the mover pressing surface 271 in the arrangement direction of the second fixed contact 17b and the third fixed contact 17c. Then, when the movable member front end surface 261 presses the mover pressing surface 271, the mover 27 is inclined following the movable member front end surface 261.

これにより、第２固定接点１７ｂと第２可動接点２９ｂとの間、および第３固定接点１７ｃと第３可動接点２９ｃとの間のうち、第３固定接点１７ｃと第３可動接点２９ｃとの間が最初に開離し、その後、図１１に示すように第２固定接点１７ｂと第２可動接点２９ｂとの間も開離する。   Accordingly, between the third fixed contact 17c and the second movable contact 29c, and between the third fixed contact 17c and the third movable contact 29c, between the third fixed contact 17c and the third movable contact 29c. Is first opened, and thereafter, the second fixed contact 17b and the second movable contact 29b are also separated as shown in FIG.

このように、共通の固定接点保持部材に複数の固定接点が設けられている場合は、最初に開離する接点ではアークは発生せず、最後に開離する接点でアークが発生する。そして、本実施形態に係る電磁継電器では、第３固定接点１７ｃと第３可動接点２９ｃとの間ではアークは発生せず、第２固定接点１７ｂと第２可動接点２９ｂとの間でアークが発生する。この第２固定接点１７ｂと第２可動接点２９ｂとの間に発生するアークに対しては第２永久磁石３０ｂによるローレンツ力が確実且つ適切に作用するため、そのアークを確実に消滅させることができる。   As described above, when a plurality of fixed contacts are provided on the common fixed contact holding member, an arc is not generated at the contact that opens first, and an arc is generated at the contact that opens last. In the electromagnetic relay according to the present embodiment, no arc is generated between the third fixed contact 17c and the third movable contact 29c, and an arc is generated between the second fixed contact 17b and the second movable contact 29b. To do. Since the Lorentz force by the second permanent magnet 30b acts reliably and appropriately on the arc generated between the second fixed contact 17b and the second movable contact 29b, the arc can be reliably extinguished. .

本実施形態によると、第１実施形態と同様に、可動コア２２等が固定コア２０側に駆動されたときの可動子２７の揺動による異音および各接点１７ａ〜ｃ、２９ａ〜ｃの消耗が防止される。   According to the present embodiment, similar to the first embodiment, abnormal noise due to the swinging of the movable element 27 when the movable core 22 and the like are driven to the fixed core 20 side and the consumption of the respective contacts 17a to 17c and 29a to 29c. Is prevented.

また、第２永久磁石３０ｂによるローレンツ力が作用し難い第３固定接点１７ｃと第３可動接点２９ｃとの間ではアークが発生しないようにし、第２永久磁石３０ｂによるローレンツ力が確実且つ適切に作用する第２固定接点１７ｂと第２可動接点２９ｂとの間でアークを発生させるようにしているため、そのアークを確実に消滅させることができる。   Further, an arc is not generated between the third fixed contact 17c and the third movable contact 29c, where the Lorentz force by the second permanent magnet 30b is difficult to act, and the Lorentz force by the second permanent magnet 30b acts reliably and appropriately. Since the arc is generated between the second fixed contact 17b and the second movable contact 29b, the arc can be surely extinguished.

なお、第３実施形態においては、可動部材先端面２６１を、接点間閉成状態のときの可動子押圧面２７１に対して傾斜させることにより、第３固定接点１７ｃと第３可動接点２９ｃとの間を開離させた後に、２固定接点１７ｂと第２可動接点２９ｂとの間を開離させるようにしたが、図１２に示す変型例のように、可動部材先端面２６１を、接点間閉成状態のときの可動子押圧面２７１に対して平行にし、可動子押圧面２７１に、可動部材先端面２６１に向かって突出する突起部２７２を設けてもよい。この突起部２７２は、第２可動接点２９ｂおよび第３可動接点２９ｃの並び方向において、第２可動接点２９ｂよりも第３可動接点２９ｃ側に配置されている。   In the third embodiment, the movable member front end surface 261 is inclined with respect to the mover pressing surface 271 when the contact is closed, so that the third fixed contact 17c and the third movable contact 29c are in contact with each other. After the gap between the two fixed contacts 17b and the second movable contact 29b, the movable member front end surface 261 is closed between the contacts as in the modified example shown in FIG. A projecting portion 272 that protrudes toward the distal end surface 261 of the movable member may be provided on the movable member pressing surface 271 so as to be parallel to the movable member pressing surface 271 in the formed state. The projecting portion 272 is disposed on the third movable contact 29c side with respect to the second movable contact 29b in the direction in which the second movable contact 29b and the third movable contact 29c are arranged.

図１２に示す変型例の場合、コイル１８への通電が遮断されて絶縁碍子２６等が反固定コア側に駆動される際、可動部材先端面２６１が可動子押圧面２７１のうち突起部２７２に最初に当接し、可動部材先端面２６１が突起部２７２を押すことにより可動子２７が傾く。これにより、第２固定接点１７ｂと第２可動接点２９ｂとの間、および第３固定接点１７ｃと第３可動接点２９ｃとの間のうち、第３固定接点１７ｃと第３可動接点２９ｃとの間が最初に開離し、その後第２固定接点１７ｂと第２可動接点２９ｂとの間が開離する。   In the case of the modification shown in FIG. 12, when the current to the coil 18 is cut off and the insulator 26 and the like are driven to the anti-fixed core side, the movable member front end surface 261 becomes the protrusion 272 of the mover pressing surface 271. The movable element 27 is tilted by first abutting and the movable member tip surface 261 pressing the projection 272. Accordingly, between the third fixed contact 17c and the second movable contact 29c, and between the third fixed contact 17c and the third movable contact 29c, between the third fixed contact 17c and the third movable contact 29c. Is first opened, and then the second fixed contact 17b and the second movable contact 29b are separated.

したがって、図１２に示す変型例においても、第３実施形態と同様の効果が得られる。また、図１２に示す変型例においては、絶縁碍子２６の回転を防止する必要がないため、絶縁碍子２６の断面形状、および第３ケース１３のガイド部１３１内の孔の形状を、円形にすることができる。   Therefore, also in the modified example shown in FIG. 12, the same effect as the third embodiment can be obtained. Further, in the modified example shown in FIG. 12, since it is not necessary to prevent the insulator 26 from rotating, the sectional shape of the insulator 26 and the shape of the hole in the guide portion 131 of the third case 13 are made circular. be able to.

（第４実施形態）
本実施形態は、製造コストを低減するために、３つの可動接点２９ａ〜ｃを廃止したものである。なお、その他に関しては第１実施形態と同様であるため、異なる部分についてのみ説明する。 (Fourth embodiment)
In the present embodiment, the three movable contacts 29a to 29c are eliminated in order to reduce the manufacturing cost. In addition, since it is the same as that of 1st Embodiment regarding others, only a different part is demonstrated.

図１３に示すように、３つの可動接点２９ａ〜ｃが廃止されている。一方、板状の固定接点保持部材１６には、３つの固定接点１７ａ〜１７ｃ（第３固定接点１７ｃは図５参照）が装着されている。各固定接点１７ａ〜１７ｃは、固定接点保持部材１６の表面から板状の可動子２７側に向かって突出していて、各固定接点１７ａ〜１７ｃと可動子２７とが点接触するようになっている。   As shown in FIG. 13, the three movable contacts 29a to 29c are abolished. On the other hand, three fixed contacts 17a to 17c (see FIG. 5 for the third fixed contact 17c) are mounted on the plate-shaped fixed contact holding member 16. The fixed contacts 17a to 17c protrude from the surface of the fixed contact holding member 16 toward the plate-shaped movable element 27, and the fixed contacts 17a to 17c and the movable element 27 are in point contact. .

なお、第１固定接点１７ａと可動子２７との接触部が本発明の第１接触部に相当し、第２固定接点１７ｂと可動子２７との接触部が本発明の第２接触部に相当し、第３固定接点１７ｃと可動子２７との接触部が本発明の第３接触部に相当する。   The contact portion between the first fixed contact 17a and the mover 27 corresponds to the first contact portion of the present invention, and the contact portion between the second fixed contact 17b and the mover 27 corresponds to the second contact portion of the present invention. The contact portion between the third fixed contact 17c and the mover 27 corresponds to the third contact portion of the present invention.

そして、３つの固定接点１７ａ〜１７ｃは、第一実施形態と同様に配置されている。換言すると、第３接触部は、可動子２７の移動方向に見たときに、第１接触部と第２接触部を通る線（すなわち、図５に示す固定接点中心接続線Ｄ）からずれている。   And the three fixed contacts 17a-17c are arrange | positioned similarly to 1st embodiment. In other words, the third contact portion deviates from a line passing through the first contact portion and the second contact portion (that is, the fixed contact center connection line D shown in FIG. 5) when viewed in the moving direction of the mover 27. Yes.

本実施形態では、コイル１８（図１参照）に通電すると、可動コア２２、シャフト２５、および絶縁碍子２６が、電磁力により復帰ばね２３に抗して固定コア２０（図１参照）側に吸引され、可動子２７は接圧ばね２８に付勢されて可動コア２２等に追従して移動する。そして、３つの固定接点１７ａ〜ｃと可動子２７が接触するため、すなわち３点接触となるため、可動子２７が３つの固定接点１７ａ〜ｃに衝突した際の可動子２７の揺動が防止され、ひいては可動子２７の揺動による異音の発生が防止される。   In this embodiment, when the coil 18 (see FIG. 1) is energized, the movable core 22, the shaft 25, and the insulator 26 are attracted to the fixed core 20 (see FIG. 1) side against the return spring 23 by electromagnetic force. The movable element 27 is urged by the contact pressure spring 28 and moves following the movable core 22 and the like. Since the three fixed contacts 17a to 17c are in contact with the movable element 27, that is, a three-point contact is made, the movable element 27 is prevented from swinging when the movable element 27 collides with the three fixed contacts 17a to 17c. As a result, the generation of abnormal noise due to the swing of the mover 27 is prevented.

なお、本実施形態では、３つの可動接点２９ａ〜ｃを廃止したが、３つの可動接点２９ａ〜ｃを残して３つの固定接点１７ａ〜ｃを廃止してもよい。   In the present embodiment, the three movable contacts 29a to 29c are eliminated, but the three fixed contacts 17a to 17c may be eliminated while leaving the three movable contacts 29a to 29c.

（第５実施形態）
本実施形態は、製造コストを低減するために、３つの固定接点１７ａ〜ｃおよび３つの可動接点２９ａ〜ｃを廃止したものである。なお、その他に関しては第１実施形態と同様であるため、異なる部分についてのみ説明する。 (Fifth embodiment)
In the present embodiment, the three fixed contacts 17a to 17c and the three movable contacts 29a to 29c are eliminated in order to reduce the manufacturing cost. In addition, since it is the same as that of 1st Embodiment regarding others, only a different part is demonstrated.

図１４〜図１６に示すように、板状の第１固定接点保持部材１６ａには、板状の可動子２７側に向かって突出する第１固定突起部１７ｄが例えばプレス加工にて形成されている。板状の第２固定接点保持部材１６ｂには、可動子２７側に向かって突出する第２固定突起部１７ｅ、および可動子２７側に向かって突出する第３固定突起部１７ｆが、例えばプレス加工にて形成されている。   As shown in FIGS. 14 to 16, the plate-shaped first fixed contact holding member 16 a is formed with a first fixed protrusion 17 d that protrudes toward the plate-shaped movable element 27 side, for example, by press working. Yes. The plate-like second fixed contact holding member 16b includes a second fixed protrusion 17e protruding toward the movable element 27 and a third fixed protrusion 17f protruding toward the movable element 27, for example, by press working. It is formed by.

なお、第３固定突起部１７ｆは、本発明の固定側当接部材に相当する。また、第１固定突起部１７ｄと可動子２７との接触部が本発明の第１接触部に相当し、第２固定突起部１７ｅと可動子２７との接触部が本発明の第２接触部に相当し、第３固定突起部１７ｆと可動子２７との接触部が本発明の第３接触部に相当する。   The third fixed protrusion 17f corresponds to the fixed-side contact member of the present invention. The contact portion between the first fixed projection 17d and the movable element 27 corresponds to the first contact portion of the present invention, and the contact portion between the second fixed projection 17e and the movable element 27 is the second contact portion of the present invention. The contact portion between the third fixed protrusion 17f and the movable element 27 corresponds to the third contact portion of the present invention.

ここで、第１固定突起部１７ｄと第２固定突起部１７ｅの各中心を通る線を固定突起部接続線Ｊとすると、第１固定突起部１７ｄと第２固定突起部１７ｅは、可動子２７の移動方向に見たときに（図１４の状態）、固定突起部接続線Ｊが、可動子２７に対する接圧ばね２８が作用する力の重心Ｅを通り、且つ重心Ｅの両側に位置するように、配置されている。また、第３固定突起部１７ｆは、可動子２７の移動方向に見たときに、固定突起部接続線Ｊからずれた位置に配置されている。   Here, if the lines passing through the respective centers of the first fixed protrusion 17d and the second fixed protrusion 17e are fixed protrusion connection lines J, the first fixed protrusion 17d and the second fixed protrusion 17e are movable elements 27. 14 (state of FIG. 14), the fixed protrusion connecting line J passes through the center of gravity E of the force acting on the contact spring 28 against the mover 27 and is positioned on both sides of the center of gravity E. Is arranged. Further, the third fixed protrusion 17 f is arranged at a position shifted from the fixed protrusion connection line J when viewed in the moving direction of the mover 27.

換言すると、第３接触部は、可動子２７の移動方向に見たときに、第１接触部と第２接触部を通る線（すなわち、固定突起部接続線Ｊ）からずれている。   In other words, the third contact portion is deviated from a line passing through the first contact portion and the second contact portion (that is, the fixed protrusion connecting line J) when viewed in the moving direction of the mover 27.

本実施形態では、コイル１８（図１参照）に通電すると、可動コア２２（図１参照）、シャフト２５（図１参照）、および絶縁碍子２６（図１参照）が、電磁力により復帰ばね２３（図１参照）に抗して固定コア２０（図１参照）側に吸引され、可動子２７は接圧ばね２８に付勢されて可動コア２２等に追従して移動する。そして、３つの固定突起部１７ｄ〜１７ｆと可動子２７が接触するため、すなわち３点接触となるため、可動子２７が３つの固定突起部１７ｄ〜１７ｆに衝突した際の可動子２７の揺動が防止され、ひいては可動子２７の揺動による異音の発生が防止される。   In the present embodiment, when the coil 18 (see FIG. 1) is energized, the movable core 22 (see FIG. 1), the shaft 25 (see FIG. 1), and the insulator 26 (see FIG. 1) are returned to the return spring 23 by electromagnetic force. The movable element 27 is attracted to the fixed core 20 (see FIG. 1) against the reference (see FIG. 1), and the mover 27 is urged by the contact pressure spring 28 to move following the movable core 22 and the like. Since the three fixed protrusions 17d to 17f and the movable element 27 come into contact with each other, that is, three-point contact occurs, the movable element 27 swings when the movable element 27 collides with the three fixed protrusions 17d to 17f. Thus, the generation of abnormal noise due to the swinging movement of the movable element 27 is prevented.

なお、本実施形態では、固定接点保持部材１６に３つの固定突起部１７ｄ〜１７ｆを形成したが、固定接点保持部材１６には３つの固定突起部１７ｄ〜１７ｆを形成せず、可動子２７に、固定接点保持部材１６側に向かって突出する３つの可動突起部を形成してもよい。因みに、この３つの可動突起部は、可動子２７の移動方向に見たときに、３つの固定突起部１７ｄ〜１７ｆと同様に配置する。   In the present embodiment, the three fixed protrusions 17d to 17f are formed on the fixed contact holding member 16. However, the three fixed protrusions 17d to 17f are not formed on the fixed contact holding member 16, and Three movable protrusions that protrude toward the fixed contact holding member 16 may be formed. Incidentally, the three movable protrusions are arranged in the same manner as the three fixed protrusions 17d to 17f when viewed in the moving direction of the movable element 27.

また、本実施形態では、固定接点保持部材１６に３つの固定突起部１７ｄ〜１７ｆを形成したが、固定接点保持部材１６および可動子２７のうち、一方に突起部を１個形成し、他方に突起部を２個形成してもよい。   In the present embodiment, the three fixed protrusions 17d to 17f are formed on the fixed contact holding member 16. However, one of the fixed contact holding member 16 and the movable element 27 is formed on one, and the other is formed on the other. Two protrusions may be formed.

（他の実施形態）
上記第１、第２、第４実施形態では、第３固定接点１７ｃおよび第３可動接点２９ｃを導電金属製にしてそれらを接点として機能させるようにしたが、第３固定接点１７ｃおよび第３可動接点２９ｃは、必ずしも接点として機能させる必要はないため、第３固定接点１７ｃおよび第３可動接点２９ｃは非導電性の素材にて形成してもよい。 (Other embodiments)
In the first, second, and fourth embodiments, the third fixed contact 17c and the third movable contact 29c are made of conductive metal so that they function as contacts. Since the contact 29c does not necessarily function as a contact, the third fixed contact 17c and the third movable contact 29c may be formed of a non-conductive material.

また、上記第１、第２、第４実施形態では、固定側当接部材としての第３固定接点１７ｃを固定接点保持部材１６に固定したが、固定側当接部材としての第３固定接点１７ｃを第３ケース１３に設けてもよい。この場合は、第３固定接点１７ｃは接点として機能しないため、樹脂製の第３ケース１３に一体成形することができる。   In the first, second, and fourth embodiments, the third fixed contact 17c as the fixed contact member is fixed to the fixed contact holding member 16, but the third fixed contact 17c as the fixed contact member is fixed. May be provided in the third case 13. In this case, since the third fixed contact 17c does not function as a contact, it can be integrally formed with the third case 13 made of resin.

また、上記各実施形態では、接圧ばね２８を１つ用いたが、接圧ばね２８を複数個用いてもよい。   In each of the above embodiments, one contact pressure spring 28 is used, but a plurality of contact pressure springs 28 may be used.

１６ 固定接点保持部材
１８ コイル
２２ 可動コア（可動部材）
２３ 復帰ばね
２５ シャフト（可動部材）
２６ 絶縁碍子（可動部材）
２７ 可動子
２８ 接圧ばね
１７ａ 第１固定接点
１７ｂ 第２固定接点
１７ｃ 第３固定接点（固定側当接部材）
２９ａ 第１可動接点
２９ｂ 第２可動接点
２９ｃ 第３可動接点（移動側当接部材） 16 Fixed contact holding member 18 Coil 22 Movable core (movable member)
23 Return spring 25 Shaft (movable member)
26 Insulator (movable member)
27 Movable element 28 Contact pressure spring 17a First fixed contact 17b Second fixed contact 17c Third fixed contact (fixed side contact member)
29a 1st movable contact 29b 2nd movable contact 29c 3rd movable contact (moving side contact member)

Claims (3)

構成部品を収容するケース（１０）と、
通電時に電磁力を発生するコイル（１８）と、
前記コイル（１８）の電磁力により駆動される可動部材（２２、２５、２６）と、
第１固定接点（１７ａ）を有する第１固定接触部材（１６ａ）と、
第２固定接点（１７ｂ）を有する第２固定接触部材（１６ｂ）と、
前記両固定接触部材（１６ａ、１６ｂ）と接離する１つの可動子（２７）と、
前記両固定接触部材（１６ａ、１６ｂ）と前記可動子（２７）とが当接する向きに前記可動子（２７）を付勢する接圧ばね（２８）と、
前記両固定接触部材（１６ａ、１６ｂ）と前記可動子（２７）とが離れる向きに、前記可動部材（２２、２５、２６）を介して前記可動子（２７）を付勢する復帰ばね（２３）とを備え、
前記コイル（１８）の電磁力により前記可動部材（２２、２５、２６）が駆動されたときには、前記第１固定接点（１７ａ）と前記可動子（２７）とが第１接触部で点接触し、前記第２固定接点（１７ｂ）と前記可動子（２７）とが第２接触部で点接触するように構成された電磁継電器において、
前記第２固定接触部材（１６ｂ）に第３固定接点（１７ｃ）が設けられており、
前記第１、第２固定接点（１７ａ、１７ｂ）と前記可動子（２７）とが接触している際に、前記第３固定接点（１７ｃ）と前記可動子（２７）とが第３接触部で点接触するように構成され、
前記第１接触部と前記第２接触部は、前記可動子（２７）の移動方向に見たときに、前記可動子（２７）に対する１個または複数個の前記接圧ばね（２８）が作用する力の重心が前記第１接触部と前記第２接触部を通る線よりも前記第３接触部側に位置するように配置され、かつ前記第１〜第３接触部は、前記可動子（２７）の移動方向に見たときに、前記第１〜第３接触部で囲まれる三角形の領域内に前記接圧ばね（２８）が作用する力の重心が位置するように配置されている電磁継電器であって、
前記第１固定接触部材（１６ａ）と前記第２固定接触部材（１６ｂ）は、前記ケース（１０）に固定され、それぞれの一端側が前記ケース（１０）の内部に形成された収納空間（１０ａ）内に位置しており、
前記第２固定接点（１７ｂ）と前記第３固定接点（１７ｃ）は、前記第２固定接触部材（１６ｂ）の前記一端側においてその長手方向に離間して配置されていることを特徴とする電磁継電器。 A case (10) for housing components;
A coil (18) that generates electromagnetic force when energized;
A movable member (22, 25, 26) driven by electromagnetic force of the coil (18);
A first fixed contact member (16a) having a first fixed contact (17a) ;
A second fixed contact member (16b) having a second fixed contact (17b) ;
One movable element (27) contacting and separating from the fixed contact members (16a, 16b);
A contact pressure spring (28) for biasing the movable element (27) in a direction in which the fixed contact members (16a, 16b) and the movable element (27) are in contact with each other;
A return spring (23) that urges the movable element (27) through the movable member (22, 25, 26) in a direction in which the fixed contact members (16a, 16b) and the movable element (27) are separated from each other. )
When the movable member (22, 25, 26) is driven by the electromagnetic force of the coil (18), the first fixed contact (17a) and the movable element (27) are in point contact at the first contact portion. In the electromagnetic relay configured to make point contact between the second fixed contact (17b) and the mover (27) at the second contact portion,
A third fixed contact (17c) is provided on the second fixed contact member (16b);
When the first and second fixed contacts (17a, 17b) and the mover (27) are in contact, the third fixed contact (17c) and the mover (27) are in a third contact portion. Configured to make point contact with
When the first contact portion and the second contact portion are viewed in the moving direction of the mover (27), one or more contact pressure springs (28) act on the mover (27). Is arranged so that the center of gravity of the force to be positioned is closer to the third contact part than the line passing through the first contact part and the second contact part, and the first to third contact parts are the movable element ( 27), the electromagnetic force is arranged such that the center of gravity of the force acting on the contact pressure spring (28) is located in a triangular region surrounded by the first to third contact portions. A relay,
The first fixed contact member (16a) and the second fixed contact member (16b) are fixed to the case (10), and a storage space (10a) in which each one end side is formed inside the case (10). Located in the
The second fixed contact (17b) and the third fixed contact (17c) are spaced apart in the longitudinal direction on the one end side of the second fixed contact member (16b). relay. 前記可動子（２７）は、第１、第２、第３可動接点（２９ａ、２９ｂ、２９ｃ）を有しており、
前記第１可動接点（２９ａ）と前記第１固定接点（１７ａ）とが前記第１接触部で点接触し、前記第２可動接点（２９ｂ）と前記第２固定接点（１７ｂ）とが前記第２接触部で点接触し、前記第３可動接点（２９ｃ）と前記第３固定接点（１７ｃ）とが前記第３接触部で点接触することを特徴とする請求項１に記載の電磁継電器。 The mover (27) has first, second and third movable contacts (29a, 29b, 29c),
Before SL and the first movable contact (29a) a first fixed contact (17a) is in point contact with the first contact portion, but with the the previous SL second movable contact (29 b) the second fixed contact (17b) the point contact with the second contact portion, before machine according to claim 1 3 in which said movable contact (29c) third fixed contact (17c), characterized in that the point contact with the third contact portion Electromagnetic relay. 構成部品を収容するケース（１０）と、A case (10) for housing components;
通電時に電磁力を発生するコイル（１８）と、A coil (18) that generates electromagnetic force when energized;
前記コイル（１８）の電磁力により駆動される可動部材（２２、２５、２６）と、A movable member (22, 25, 26) driven by electromagnetic force of the coil (18);
第１固定接点（１７ａ）を有する第１固定接点保持部材（１６ａ）と、A first fixed contact holding member (16a) having a first fixed contact (17a);
第２固定接点（１７ｂ）を有する第２固定接点保持部材（１６ｂ）と、A second fixed contact holding member (16b) having a second fixed contact (17b);
前記第１、第２固定接点（１７ａ、１７ｂ）とそれぞれ接離する第１、第２可動接点（２９ａ、２９ｂ）を有する１つの可動子（２７）と、A single mover (27) having first and second movable contacts (29a, 29b) that are in contact with and away from the first and second fixed contacts (17a, 17b), respectively;
前記第１、第２固定接点（１７ａ、１７ｂ）と前記第１、第２可動接点（２９ａ、２９ｂ）とが当接する向きに前記可動子（２７）を付勢する接圧ばね（２８）と、A contact pressure spring (28) for urging the movable element (27) in a direction in which the first and second fixed contacts (17a, 17b) and the first and second movable contacts (29a, 29b) are in contact with each other; ,
前記第１、第２固定接点（１７ａ、１７ｂ）と前記第１、第２可動接点（２９ａ、２９ｂ）とが離れる向きに、前記可動部材（２２、２５、２６）を介して前記可動子（２７）を付勢する復帰ばね（２３）とを備え、The movable element (22, 25, 26) is moved through the movable member (22, 25, 26) in a direction in which the first and second fixed contacts (17a, 17b) and the first and second movable contacts (29a, 29b) are separated from each other. 27) and a return spring (23) for biasing,
前記コイル（１８）の電磁力により前記可動部材（２２、２５、２６）が駆動されたときには、前記第１、第２固定接点（１７ａ、１７ｂ）と前記第１、第２可動接点（２９ａ、２９ｂ）とが当接するとともに、前記可動部材（２２、２５、２６）と前記可動子（２７）とが離れるように構成された電磁継電器において、When the movable member (22, 25, 26) is driven by electromagnetic force of the coil (18), the first and second fixed contacts (17a, 17b) and the first and second movable contacts (29a, 29b) abuts and the movable member (22, 25, 26) and the movable element (27) are separated from each other,
前記第２固定接点保持部材（１６ｂ）に設けられた第３固定接点（１７ｃ）と、A third fixed contact (17c) provided on the second fixed contact holding member (16b);
前記可動子（２７）に設けられ、前記第１、第２固定接点（１７ａ、１７ｂ）と前記第１、第２可動接点（２９ａ、２９ｂ）とが当接している際に前記第３固定接点（１７ｃ）に当接する第３可動接点（２９ｃ）とを備え、The third fixed contact provided on the movable element (27) when the first and second fixed contacts (17a, 17b) are in contact with the first and second movable contacts (29a, 29b). A third movable contact (29c) in contact with (17c),
前記第１、第２可動接点（２９ａ、２９ｂ）は、前記可動子（２７）の移動方向に見たときに、前記可動子（２７）に対する１個または複数個の前記接圧ばね（２８）が作用する力の重心が前記第１、第２可動接点（２９ａ、２９ｂ）を通る線よりも前記第３可動接点（２９ｃ）側に位置するように配置され、かつ前記第１〜第３可動接点（２９ａ、２９ｂ、２９ｃ）は、前記可動子（２７）の移動方向に見たときに、前記第１〜第３可動接点（２９ａ、２９ｂ、２９ｃ）で囲まれる三角形の領域内に前記接圧ばね（２８）が作用する力の重心が位置するように配置されている電磁継電器であって、When the first and second movable contacts (29a, 29b) are viewed in the moving direction of the movable element (27), one or a plurality of the contact pressure springs (28) with respect to the movable element (27). Is arranged so that the center of gravity of the force acting on the third movable contact (29c) is located on the side of the third movable contact (29c) with respect to the line passing through the first and second movable contacts (29a, 29b). When the contact (29a, 29b, 29c) is viewed in the moving direction of the movable element (27), the contact is within a triangular region surrounded by the first to third movable contacts (29a, 29b, 29c). An electromagnetic relay arranged so that the center of gravity of the force acting on the pressure spring (28) is located;
前記第１固定接点保持部材（１６ａ）と前記第２固定接点保持部材（１６ｂ）は、前記ケース（１０）に固定され、それぞれの一端側が前記ケース（１０）の内部に形成された収納空間（１０ａ）内に位置しており、The first fixed contact holding member (16a) and the second fixed contact holding member (16b) are fixed to the case (10), and one end side of each is formed in the case (10). 10a),
前記第２固定接点（１７ｂ）と前記第３固定接点（１７ｃ）は、前記第２固定接点保持部材（１６ｂ）の前記一端側においてその長手方向に離間して配置されていることを特徴とする電磁継電器。The second fixed contact (17b) and the third fixed contact (17c) are spaced apart in the longitudinal direction on the one end side of the second fixed contact holding member (16b). Electromagnetic relay.
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