JP2010062054A

JP2010062054A - Electromagnetic relay

Info

Publication number: JP2010062054A
Application number: JP2008228005A
Authority: JP
Inventors: Hiroshi Nagura; 宏名倉; Takashi Ito; 貴史伊藤; Masaki Takeyama; 雅樹武山
Original assignee: Anden Co Ltd
Current assignee: Denso Electronics Corp
Priority date: 2008-09-05
Filing date: 2008-09-05
Publication date: 2010-03-18
Anticipated expiration: 2028-09-05
Also published as: CN101667508A; JP5120162B2; CN101667508B

Abstract

PROBLEM TO BE SOLVED: To reliably shut off arc generated at separation of movable contacts from fixed contacts. SOLUTION: The relay includes magnets 26, 27 making Lorentz force act on arc generated between fixed contacts 14, 15 and movable contacts 24, 25. Fixed contact retaining members 12, 13 are extended with adjacent sites of the fixed contacts 14, 15 in a direction getting away from the magnets 26, 27, and the movable members 20, 23 are extended with adjacent sites of the movable contacts 24, 25 in a direction getting away from the magnets 26, 27. Moreover, ends 261, 271 at a side toward directions F1, F2 of the Lorentz force in the magnets 26, 27 are further extended toward directions of the Lorentz force than side faces 123, 133 of the fixed contact retaining members 12, 13 as well as side faces 232, 234 of the movable members 20, 23. COPYRIGHT: (C)2010,JPO&INPIT

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、固定接点保持部材にて固定接点を所定位置に位置決め保持し、可動接点が装着された可動部材を電磁コイルの電磁力により駆動して、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。そして、可動接点と固定接点の近傍に磁石を配置し、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。また、固定接点保持部材における固定接点近傍部位、および可動部材における可動接点近傍部位を、磁石から遠ざかる向きに延ばすことにより、アークが固定接点保持部材や可動部材側に向かわないようにしている。
特開２００６−３５１２４０号公報 In the conventional electromagnetic relay disclosed in Patent Document 1, the fixed contact is positioned and held at a predetermined position by a fixed contact holding member, and the movable member on which the movable contact is mounted is driven by the electromagnetic force of the electromagnetic coil. The electric circuit is opened and closed by moving the fixed contact and the fixed contact. A magnet is disposed in the vicinity of the movable contact and the fixed contact, and a Lorentz force is applied to the arc generated when the movable contact is separated from the fixed contact, thereby extending and blocking the arc. Further, by extending the portion near the fixed contact in the fixed contact holding member and the portion near the movable contact in the movable member in a direction away from the magnet, the arc is prevented from going to the fixed contact holding member or the movable member side.
JP 2006-351240 A

しかしながら、従来の電磁継電器のように、可動接点と固定接点の近傍に磁石を配置しただけでは、アークを充分に引き伸ばすことができず、アークを確実に遮断できない場合があった。特に、高電圧用（例えば、電圧４００Ｖのハイブリッド車用）の電磁継電器においては、アーク長が長くなるため、アークを確実に遮断することが困難であった。 However, there are cases where the arc cannot be sufficiently stretched and the arc cannot be reliably interrupted only by arranging a magnet in the vicinity of the movable contact and the fixed contact as in the conventional electromagnetic relay. In particular, in an electromagnetic relay for high voltage (for example, for a hybrid vehicle having a voltage of 400 V), it is difficult to reliably interrupt the arc because the arc length becomes long.

本発明は上記点に鑑みて、アークを確実に遮断可能にすることを目的とする。 An object of this invention is to make it possible to interrupt | block an arc reliably in view of the said point.

上記目的を達成するため、請求項１に記載の発明では、固定接点（１４、１５）と、一端側に固定接点（１４、１５）が装着されて固定接点（１４、１５）を所定位置に位置決め保持する固定接点保持部材（１２、１３）と、通電時に電磁力を発生する電磁コイル（１６）と、電磁コイル（１６）の電磁力により駆動される可動部材（２０、２３）と、可動部材（２０、２３）の一端側に装着されて固定接点（１４、１５）と接離する可動接点（２４、２５）と、固定接点（１４、１５）および可動接点（２４、２５）の側方に配置され、固定接点（１４、１５）と可動接点（２４、２５）との間に発生するアークにローレンツ力を作用させる磁石（２６、２７）とを備える電磁継電器において、固定接点（１４、１５）の中心と可動接点（２４、２５）の中心とを通る線の方向を接点並び方向（Ｄ１、Ｄ２）とし、接点並び方向（Ｄ１、Ｄ２）に対して直交し且つ磁石（２６、２７）を通る線の方向を磁石配置方向（Ｅ１、Ｅ２）とし、固定接点（１４、１５）と可動接点（２４、２５）とが対向する領域でのローレンツ力の作用向きをローレンツ力作用向き（Ｆ１、Ｆ２）としたとき、固定接点保持部材（１２、１３）は、固定接点（１４、１５）装着側の端面（１２２、１３２）が磁石（２６、２７）に対向するとともに、少なくとも固定接点（１４、１５）の近傍部位が、磁石配置方向（Ｅ１、Ｅ２）に沿って磁石（２６、２７）から遠ざかる向きに延びており、可動部材（２０、２３）は、可動接点（２４、２５）装着側の端面（２３１、２３３）が磁石（２６、２７）に対向するとともに、少なくとも可動接点（２４、２５）の近傍部位が、磁石配置方向（Ｅ１、Ｅ２）に沿って磁石（２６、２７）から遠ざかる向きに延びており、ローレンツ力作用向き（Ｆ１、Ｆ２）が接点並び方向（Ｄ１、Ｄ２）および磁石配置方向（Ｅ１、Ｅ２）に対して直交するように構成され、磁石（２６、２７）におけるローレンツ力作用向き（Ｆ１、Ｆ２）側の端部（２６１、２７１）は、固定接点保持部材（１２、１３）の固定接点（１４、１５）装着部におけるローレンツ力作用向き（Ｆ１、Ｆ２）側の側面（１２３、１３３）、および可動部材（２０、２３）の可動接点（２４、２５）装着部におけるローレンツ力作用向き（Ｆ１、Ｆ２）側の側面（２３２、２３４）よりも、ローレンツ力作用向き（Ｆ１、Ｆ２）にさらに延び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 fixed contact (14, 15) and the fixed contact (14, 15) are mounted on one end side so that the fixed contact (14, 15) is in a predetermined position. Fixed contact holding member (12, 13) for positioning and holding, electromagnetic coil (16) for generating electromagnetic force when energized, movable member (20, 23) driven by electromagnetic force of electromagnetic coil (16), movable A movable contact (24, 25) that is attached to one end of the member (20, 23) and contacts and separates from the fixed contact (14, 15), and the fixed contact (14, 15) and the movable contact (24, 25) side. In an electromagnetic relay comprising a magnet (26, 27) arranged on the side and acting on the arc generated between the fixed contact (14, 15) and the movable contact (24, 25), a Lorentz force is provided. , 15) and the movable contact ( The direction of the line passing through the center of 4, 25) is the contact arrangement direction (D1, D2), and the direction of the line orthogonal to the contact arrangement direction (D1, D2) and passing through the magnets (26, 27) is the magnet. When the arrangement direction (E1, E2) is the Lorentz force acting direction (F1, F2) in the region where the fixed contact (14, 15) and the movable contact (24, 25) are opposed to each other, The fixed contact holding member (12, 13) has an end surface (122, 132) on the fixed contact (14, 15) mounting side facing the magnet (26, 27) and at least a portion near the fixed contact (14, 15). Extends in a direction away from the magnets (26, 27) along the magnet arrangement direction (E1, E2), and the movable members (20, 23) are mounted on the end surfaces (231, 233) is the magnet (26, 27) While facing each other, at least the vicinity of the movable contact (24, 25) extends in the direction away from the magnet (26, 27) along the magnet arrangement direction (E1, E2), and the Lorentz force acting direction (F1, F2). ) Is orthogonal to the contact arrangement direction (D1, D2) and the magnet arrangement direction (E1, E2), and the end of the magnet (26, 27) on the Lorentz force acting direction (F1, F2) side ( 261, 271) are side surfaces (123, 133) on the Lorentz force acting direction (F1, F2) side of the fixed contact (14, 15) mounting portion of the fixed contact holding member (12, 13), and the movable member (20, 261). 23) in the Lorentz force acting direction (F1, F2) rather than the side surfaces (232, 234) on the Lorentz force acting direction (F1, F2) side in the movable contact (24, 25) mounting portion. It is characterized by extending.

これによると、磁石（２６、２７）におけるローレンツ力作用向き（Ｆ１、Ｆ２）側の端部（２６１、２７１）を上記のように延ばしているため、アークを従来よりも長く引き伸ばして確実に遮断することができる。 According to this, since the end portions (261, 271) on the Lorentz force acting direction (F1, F2) side of the magnets (26, 27) are extended as described above, the arc is stretched longer than before and reliably cut off. can do.

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、固定接点（１４、１５）として、第１固定接点（１４）と第２固定接点（１５）とを備え、固定接点保持部材（１２、１３）として、第１固定接点（１４）が装着された第１固定接点保持部材（１２）と、第２固定接点（１５）が装着された第２固定接点保持部材（１３）とを備え、可動接点（２４、２５）として、第１固定接点（１４）と接離する第１可動接点（２４）と、第２固定接点（１５）と接離する第２可動接点（２５）とを備え、第１可動接点（２４）および第２可動接点（２５）は可動部材（２０、２３）に装着され、第１可動接点（２４）が第１固定接点（１４）に当接するとともに、第２可動接点（２５）が第２固定接点（１５）に当接したときに、第１固定接点（１４）と第２固定接点（１５）との間が可動部材（２０、２３）を介して導通状態になるように構成されてい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 first fixed contact (14) and the second fixed contact (15) are provided as the fixed contacts (14, 15), and the fixed contact is retained. As members (12, 13), a first fixed contact holding member (12) to which a first fixed contact (14) is attached and a second fixed contact holding member (13) to which a second fixed contact (15) is attached. As a movable contact (24, 25), a first movable contact (24) contacting and separating from the first fixed contact (14) and a second movable contact (25) contacting and separating from the second fixed contact (15) ), The first movable contact (24) and the second movable contact (25) are mounted on the movable members (20, 23), and the first movable contact (24) contacts the first fixed contact (14). At the same time, when the second movable contact (25) contacts the second fixed contact (15), Between the fixed contact (14) and the second fixed contact (15) is characterized by being configured such that the conductive state via the movable member (20, 23).

これによると、接点間の電圧は分圧により半分となり、アーク長が短くなるため、アークをより確実に遮断することができる。 According to this, the voltage between the contacts is halved by the partial pressure and the arc length is shortened, so that the arc can be more reliably interrupted.

請求項３に記載の発明では、請求項２に記載の電磁継電器において、第１固定接点保持部材（１２）と第２固定接点保持部材（１３）は、固定接点（１４、１５）側の端部から磁石配置方向（Ｅ１、Ｅ２）に沿って磁石（２６、２７）から遠ざかる向きに平行に延びた後に、他方の固定接点保持部材から遠ざかる向きに延びていることを特徴とする。 According to a third aspect of the present invention, in the electromagnetic relay according to the second aspect, the first fixed contact holding member (12) and the second fixed contact holding member (13) are the ends on the fixed contact (14, 15) side. After extending in parallel to the direction away from the magnets (26, 27) along the magnet arrangement direction (E1, E2) from the portion, it extends in the direction away from the other fixed contact holding member.

これによると、第１固定接点保持部材（１２）と第２固定接点保持部材（１３）との間の絶縁性を高めることができる。 According to this, the insulation between a 1st fixed contact holding member (12) and a 2nd fixed contact holding member (13) can be improved.

請求項４に記載の発明では、請求項１ないし３のいずれか１つに記載の電磁継電器において、構成部品を収容するケース（１１）の内壁部のうち、ローレンツ力作用向き（Ｆ１、Ｆ２）に引き伸ばされたアークが衝突する部位に、接点並び方向（Ｄ１、Ｄ２）と略平行な方向にアークを案内するガイド部（１１１、１１２）を備えることを特徴とする。 According to a fourth aspect of the present invention, in the electromagnetic relay according to any one of the first to third aspects, the Lorentz force acting direction (F1, F2) of the inner wall portion of the case (11) housing the component parts. A guide portion (111, 112) that guides the arc in a direction substantially parallel to the contact arrangement direction (D1, D2) is provided at a portion where the arc stretched by (2) collides.

これによると、アークはガイド部（１１１、１１２）に沿って伸びることができるため、ケース（１１）内の狭い空間内でもアークを充分に引き伸ばすことができ、アークをより確実に遮断することができる。 According to this, since the arc can extend along the guide portions (111, 112), the arc can be sufficiently stretched even in a narrow space in the case (11), and the arc can be cut off more reliably. it can.

なお、特許請求の範囲およびこの欄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 a claim and this column shows the correspondence with the specific means as described in embodiment mentioned later.

本発明の一実施形態について説明する。図１は本発明の一実施形態に係る電磁継電器を示す断面図、図２は図１のＡ−Ａ線に沿う断面図、図３は図１のＢ−Ｂ線に沿う断面図、図４は図１のＣ−Ｃ線に沿う断面図である。 An embodiment of the present invention will be described. 1 is a sectional view showing an electromagnetic relay according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line AA in FIG. 1, FIG. 3 is a sectional view taken along line BB in FIG. These are sectional drawings which follow the CC line of FIG.

本実施形態に係る電磁継電器は、樹脂よりなる板状のベース１０に、樹脂よりなる有底筒状で直方体のケース１１が嵌合されており、ベース１０とケース１１とによって内部に空間（以下、内部空間という）１０ａが形成されている。 In the electromagnetic relay according to this embodiment, a bottomed cylindrical and rectangular parallelepiped case 11 made of resin is fitted to a plate-like base 10 made of resin. 10a) is formed.

ベース１０には、導電金属製の２つの固定接点保持部材１２、１３が固定されている。２つの固定接点保持部材１２、１３は、ベース１０を貫通していて、一端側が内部空間１０ａ内に位置し、他端側が外部空間に位置している。 Two fixed contact holding members 12 and 13 made of conductive metal are fixed to the base 10. The two fixed contact holding members 12 and 13 pass through the base 10, and one end side is located in the internal space 10a and the other end side is located in the external space.

２つの固定接点保持部材１２、１３における内部空間１０ａ側の端部には、導電金属製の固定接点１４、１５がそれぞれかしめ固定されている。そして、２つの固定接点１４、１５は、２つの固定接点保持部材１２、１３により所定位置に位置決め保持される。 The fixed contacts 14 and 15 made of conductive metal are caulked and fixed to the end portions on the inner space 10a side of the two fixed contact holding members 12 and 13, respectively. The two fixed contacts 14 and 15 are positioned and held at predetermined positions by the two fixed contact holding members 12 and 13.

２つの固定接点保持部材１２、１３の外部空間側には、外部ハーネス（図示せず）と接続される負荷回路端子１２１、１３１が形成されている。そして、第１固定接点保持部材１２の負荷回路端子１２１は、外部ハーネスを介して電源（図示せず）に接続され、第２固定接点保持部材１３の負荷回路端子１３１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。 Load circuit terminals 121 and 131 connected to an external harness (not shown) are formed on the external space side of the two fixed contact holding members 12 and 13. The load circuit terminal 121 of the first fixed contact holding member 12 is connected to a power source (not shown) via an external harness, and the load circuit terminal 131 of the second fixed contact holding member 13 is connected via an external harness. Connected to an electrical load (not shown).

また、ベース１０には、それぞれ電磁コイル１６に接続された２つのコイル端子１７（一方のみ図示）、およびヨーク１８が圧入等にて固定されている。 Further, two coil terminals 17 (only one is shown) and a yoke 18 respectively connected to the electromagnetic coil 16 are fixed to the base 10 by press fitting or the like.

電磁コイル１６は、樹脂製のボビン１６１と、ボビン１６１に巻かれたコイルワイヤ１６２とを有し、通電時に電磁力を発生する。ボビン１６１の中心穴部には、磁性体金属材料よりなる固定鉄心１９が配置されている。 The electromagnetic coil 16 has a resin bobbin 161 and a coil wire 162 wound around the bobbin 161, and generates electromagnetic force when energized. A fixed iron core 19 made of a magnetic metal material is disposed in the center hole of the bobbin 161.

ヨーク１８は、磁性体金属材料よりなり、コ字状に曲げられており、電磁コイル１６により誘起された磁束の磁路を構成する。電磁コイル１６はヨーク１８に固定されている。 The yoke 18 is made of a magnetic metal material, bent in a U shape, and constitutes a magnetic path of magnetic flux induced by the electromagnetic coil 16. The electromagnetic coil 16 is fixed to the yoke 18.

固定鉄心１９に対向する位置に、磁性体金属製の可動鉄片２０が配置されており、可動鉄片２０は、コイル通電時に固定鉄心１９側に吸引される。また、可動鉄片２０は、略Ｌ字状に曲げられた金属製の連結板２１によってヨーク１８に連結されている。連結板２１は、コイル非通電時に可動鉄片２０が固定鉄心１９から離れる向きの弾性力を可動鉄片２０に作用させる。 A movable iron piece 20 made of a magnetic metal is disposed at a position facing the fixed iron core 19, and the movable iron piece 20 is attracted to the fixed iron core 19 side when the coil is energized. The movable iron piece 20 is connected to the yoke 18 by a metal connecting plate 21 bent into a substantially L shape. The connecting plate 21 causes the movable iron piece 20 to act on the movable iron piece 20 in the direction in which the movable iron piece 20 is separated from the fixed core 19 when the coil is not energized.

可動鉄片２０には、樹脂製の連結部材２２によって、コ字状の導電金属製の板バネ２３が連結されている。板バネ２３の両端には、導電金属製の可動接点２４、２５がかしめ固定されており、第１可動接点２４は第１固定接点１４に対向して配置され、第２可動接点２５は第２固定接点１５に対向して配置されている。なお、可動鉄片２０および板バネ２３は、本発明の可動部材を構成する。 A U-shaped conductive metal leaf spring 23 is coupled to the movable iron piece 20 by a resin coupling member 22. Movable contacts 24, 25 made of conductive metal are caulked and fixed to both ends of the leaf spring 23, the first movable contact 24 is disposed to face the first fixed contact 14, and the second movable contact 25 is the second movable contact 25. It is arranged opposite to the fixed contact 15. In addition, the movable iron piece 20 and the leaf | plate spring 23 comprise the movable member of this invention.

第１固定接点１４および第１可動接点２４の側方には、第１可動接点２４が第１固定接点１４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２６が配置されている。また、第２固定接点１５および第２可動接点２５の側方には、第２可動接点２５が第２固定接点１５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２７が配置されている。これらの永久磁石２６、２７は、円柱状に形成されており、ケース１１の側壁に形成された凹部に挿入されている。 A first permanent magnet 26 for applying a Lorentz force to an arc generated when the first movable contact 24 moves away from the first fixed contact 14 is disposed on the side of the first fixed contact 14 and the first movable contact 24. Has been. Further, on the side of the second fixed contact 15 and the second movable contact 25, a second permanent magnet 27 that applies Lorentz force to an arc generated when the second movable contact 25 moves away from the second fixed contact 15. Is arranged. These permanent magnets 26 and 27 are formed in a cylindrical shape, and are inserted into recesses formed in the side wall of the case 11.

ベース１０には、内部空間１０ａ内に突出する隔壁１０１が形成されている。そして、この隔壁１０１により、第１固定接点１４および第１可動接点２４が配置された空間と第２固定接点１５および第２可動接点２５が配置された空間とが分離されている。 The base 10 is formed with a partition wall 101 protruding into the internal space 10a. The partition 101 separates the space in which the first fixed contact 14 and the first movable contact 24 are arranged from the space in which the second fixed contact 15 and the second movable contact 25 are arranged.

ここで、第１固定接点１４の中心と第１可動接点２４の中心とを通る線の方向を、第１接点並び方向Ｄ１とする。この第１接点並び方向Ｄ１に対して直交し且つ第１永久磁石２６を通る線の方向を第１磁石配置方向Ｅ１とする。また、第１固定接点１４と第１可動接点２４とが対向する領域においてアークに作用するローレンツ力の向きを、第１ローレンツ力作用向きＦ１とする。 Here, the direction of a line passing through the center of the first fixed contact 14 and the center of the first movable contact 24 is defined as a first contact arrangement direction D1. A direction of a line orthogonal to the first contact arrangement direction D1 and passing through the first permanent magnet 26 is defined as a first magnet arrangement direction E1. Further, the direction of the Lorentz force acting on the arc in the region where the first fixed contact 14 and the first movable contact 24 face each other is referred to as a first Lorentz force acting direction F1.

そして、第１固定接点保持部材１２は、第１固定接点１４が装着された側の端面１２２が第１永久磁石２６に対向している。また、第１固定接点保持部材１２は、第１固定接点１４の近傍部位が第１磁石配置方向Ｅ１に沿って第１永久磁石２６から遠ざかる向きに延びた後に、第２固定接点保持部材１３から遠ざかる向きに延びている。 In the first fixed contact holding member 12, the end surface 122 on the side where the first fixed contact 14 is mounted is opposed to the first permanent magnet 26. Further, the first fixed contact holding member 12 extends from the second fixed contact holding member 13 after the vicinity of the first fixed contact 14 extends away from the first permanent magnet 26 along the first magnet arrangement direction E1. Extends away.

板バネ２３は、第１可動接点２４が装着された側の端面２３１が第１永久磁石２６に対向するとともに、第１可動接点２４の近傍部位が、第１磁石配置方向Ｅ１に沿って第１永久磁石２６から遠ざかる向きに延びている。 In the leaf spring 23, the end surface 231 on the side where the first movable contact 24 is mounted is opposed to the first permanent magnet 26, and the vicinity of the first movable contact 24 is first along the first magnet arrangement direction E1. It extends in a direction away from the permanent magnet 26.

第１ローレンツ力作用向きＦ１が、第１接点並び方向Ｄ１および第１磁石配置方向Ｅ１に対して直交し、且つ、第２固定接点１５および第２可動接点２５から遠ざかる向きになるように、第１固定接点１４と第１可動接点２４との間の電流の向き、および第１固定接点１４と第１可動接点２４とが対向する領域での磁束の向きが、設定されている。 The first Lorentz force acting direction F1 is perpendicular to the first contact arrangement direction D1 and the first magnet arrangement direction E1 and is away from the second fixed contact 15 and the second movable contact 25. The direction of current between the first fixed contact 14 and the first movable contact 24 and the direction of magnetic flux in the region where the first fixed contact 14 and the first movable contact 24 face each other are set.

第１永久磁石２６における第１ローレンツ力作用向きＦ１側の端部２６１は、第１固定接点保持部材１２の第１固定接点１４装着部における第１ローレンツ力作用向きＦ１側の側面１２３、および板バネ２３の第１可動接点２４装着部における第１ローレンツ力作用向きＦ１側の側面２３２よりも、第１ローレンツ力作用向きＦ１にさらに延びている。 An end portion 261 on the first Lorentz force acting direction F1 side in the first permanent magnet 26 is a side surface 123 on the first Lorentz force acting direction F1 side in the mounting portion of the first fixed contact 14 of the first fixed contact holding member 12, and a plate The spring 23 further extends in the first Lorentz force acting direction F1 from the side surface 232 on the first Lorentz force acting direction F1 side in the first movable contact 24 mounting portion.

第１永久磁石２６における第１ローレンツ力作用向きＦ１とは反対側の端部２６２は、第１固定接点１４における第１ローレンツ力作用向きＦ１とは反対側の端部１４１、および第１可動接点２４における第１ローレンツ力作用向きＦ１とは反対側の端部２４１よりも、第１ローレンツ力作用向きＦ１とは反対向きにさらに延びている。 An end portion 262 of the first permanent magnet 26 opposite to the first Lorentz force acting direction F1 is an end portion 141 of the first fixed contact 14 opposite to the first Lorentz force acting direction F1, and a first movable contact. 24 extends further in the direction opposite to the first Lorentz force acting direction F1 than the end 241 opposite to the first Lorentz force acting direction F1.

ケース１１の内壁部のうち、第１固定接点１４および第１可動接点２４から見て第１ローレンツ力作用向きＦ１の対向位置に、換言すると、第１ローレンツ力作用向きＦ１に引き伸ばされたアークが衝突する部位に、凹部または溝状の第１ガイド部１１１が形成されている。第１ガイド部１１１は、第１接点並び方向Ｄ１と平行な方向に延びていて、第１ガイド部１１１に衝突したアークを第１接点並び方向Ｄ１と略平行な方向に案内するようになっている。 Of the inner wall portion of the case 11, the arc stretched in the first Lorentz force acting direction F 1 in a position opposed to the first Lorentz force acting direction F 1 when viewed from the first fixed contact 14 and the first movable contact 24. A concave or groove-shaped first guide portion 111 is formed at the colliding portion. The first guide portion 111 extends in a direction parallel to the first contact arrangement direction D1, and guides the arc that has collided with the first guide portion 111 in a direction substantially parallel to the first contact arrangement direction D1. Yes.

次に、第２固定接点１５の中心と第２可動接点２５の中心とを通る線の方向を、第２接点並び方向Ｄ２とする。この第２接点並び方向Ｄ２に対して直交し且つ第２永久磁石２７を通る線の方向を第２磁石配置方向Ｅ２とする。また、第２固定接点１５と第２可動接点２５とが対向する領域においてアークに作用するローレンツ力の向きを、第２ローレンツ力作用向きＦ２とする。 Next, the direction of a line passing through the center of the second fixed contact 15 and the center of the second movable contact 25 is defined as a second contact arrangement direction D2. A direction of a line orthogonal to the second contact arrangement direction D2 and passing through the second permanent magnet 27 is defined as a second magnet arrangement direction E2. In addition, the direction of the Lorentz force acting on the arc in the region where the second fixed contact 15 and the second movable contact 25 face each other is defined as a second Lorentz force acting direction F2.

そして、第２固定接点保持部材１３は、第２固定接点１５が装着された側の端面１３２が第２永久磁石２７に対向している。また、第２固定接点保持部材１３は、第２固定接点１５の近傍部位が第２磁石配置方向Ｅ２に沿って第２永久磁石２７から遠ざかる向きに延びた後に、第１固定接点保持部材１２から遠ざかる向きに延びている。 The second fixed contact holding member 13 has the end surface 132 on the side where the second fixed contact 15 is mounted facing the second permanent magnet 27. The second fixed contact holding member 13 extends from the first fixed contact holding member 12 after the vicinity of the second fixed contact 15 extends in the direction away from the second permanent magnet 27 along the second magnet arrangement direction E2. Extends away.

板バネ２３は、第２可動接点２５が装着された側の端面２３３が第２永久磁石２７に対向するとともに、第２可動接点２５の近傍部位が、第２磁石配置方向Ｅ２に沿って第２永久磁石２７から遠ざかる向きに延びている。 In the leaf spring 23, the end surface 233 on the side where the second movable contact 25 is mounted is opposed to the second permanent magnet 27, and the vicinity of the second movable contact 25 is second along the second magnet arrangement direction E2. It extends in a direction away from the permanent magnet 27.

第２ローレンツ力作用向きＦ２が、第２接点並び方向Ｄ２および第２磁石配置方向Ｅ２に対して直交し、且つ、第１固定接点１４および第１可動接点２４から遠ざかる向きになるように、第２固定接点１５と第２可動接点２５との間の電流の向き、および第２固定接点１５と第２可動接点２５とが対向する領域での磁束の向きが、設定されている。 The second Lorentz force acting direction F2 is perpendicular to the second contact arrangement direction D2 and the second magnet arrangement direction E2 and is away from the first fixed contact 14 and the first movable contact 24. The direction of the current between the second fixed contact 15 and the second movable contact 25 and the direction of the magnetic flux in the region where the second fixed contact 15 and the second movable contact 25 face each other are set.

第２永久磁石２７における第２ローレンツ力作用向きＦ２側の端部２７１は、第２固定接点保持部材１３の第２固定接点１５装着部における第２ローレンツ力作用向きＦ２側の側面１３３、および板バネ２３の第２可動接点２５装着部における第２ローレンツ力作用向きＦ２側の側面２３４よりも、第２ローレンツ力作用向きＦ２にさらに延びている。 The end portion 271 on the second Lorentz force acting direction F2 side of the second permanent magnet 27 is a side surface 133 on the second Lorentz force acting direction F2 side of the second fixed contact holding member 13 mounting portion and the plate The spring 23 extends further in the second Lorentz force acting direction F2 than the side surface 234 on the second Lorentz force acting direction F2 side in the mounting portion of the second movable contact 25 of the spring 23.

第２永久磁石２７における第２ローレンツ力作用向きＦ２とは反対側の端部２７２は、第２固定接点１５における第２ローレンツ力作用向きＦ２とは反対側の端部１５１、および第２可動接点２５における第２ローレンツ力作用向きＦ２とは反対側の端部２５１よりも、第２ローレンツ力作用向きＦ２とは反対向きにさらに延びている。 An end portion 272 of the second permanent magnet 27 opposite to the second Lorentz force acting direction F2 is an end portion 151 opposite to the second Lorentz force acting direction F2 of the second fixed contact 15 and a second movable contact. 25 extends further in the direction opposite to the second Lorentz force acting direction F2 than the end 251 opposite to the second Lorentz force acting direction F2.

ケース１１の内壁部のうち、第２固定接点１５および第２可動接点２５から見て第２ローレンツ力作用向きＦ２の対向位置に、換言すると、第２ローレンツ力作用向きＦ２に引き伸ばされたアークが衝突する部位に、凹部または溝状の第２ガイド部１１２が形成されている。第２ガイド部１１２は、第２接点並び方向Ｄ２と平行な方向に延びていて、第２ガイド部１１２に衝突したアークを第２接点並び方向Ｄ２と略平行な方向に案内するようになっている。 In the inner wall portion of the case 11, the arc stretched in the second Lorentz force acting direction F 2 in the opposite position of the second Lorentz force acting direction F 2 when viewed from the second fixed contact 15 and the second movable contact 25. A concave or groove-shaped second guide portion 112 is formed at the colliding portion. The second guide part 112 extends in a direction parallel to the second contact arrangement direction D2, and guides the arc that has collided with the second guide part 112 in a direction substantially parallel to the second contact arrangement direction D2. Yes.

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、電磁コイル１６に通電すると、その電磁力により可動鉄片２０が固定鉄心１９側に吸引され、第１可動接点２４が第１固定接点１４に当接するとともに、第２可動接点２５が第２固定接点１５に当接し、２つの固定接点１４、１５間が板バネ２３によって接続されて電気回路が閉じられる。一方、電磁コイル１６への通電が遮断されると、連結板２１の弾性力により可動接点２４、２５が固定接点１４、１５から離され、電気回路が開かれる。 Next, the operation of the electromagnetic relay according to this embodiment will be described. First, when the electromagnetic coil 16 is energized, the movable iron piece 20 is attracted to the fixed iron core 19 side by the electromagnetic force, the first movable contact 24 comes into contact with the first fixed contact 14, and the second movable contact 25 is second fixed. Abutting on the contact 15, the two fixed contacts 14, 15 are connected by a leaf spring 23 to close the electric circuit. On the other hand, when the energization of the electromagnetic coil 16 is interrupted, the movable contacts 24 and 25 are separated from the fixed contacts 14 and 15 by the elastic force of the connecting plate 21, and the electric circuit is opened.

そして、可動接点２４、２５が固定接点１４、１５から離れる際に発生するアークは、以下のようにして遮断される。 And the arc generated when the movable contacts 24, 25 are separated from the fixed contacts 14, 15 is interrupted as follows.

まず、第１固定接点１４と第１可動接点２４との間に発生したアークは、図３に白抜き矢印で示すように、ローレンツ力により第１ローレンツ力作用向きＦ１に引き伸ばされつつ、第１永久磁石２６における第１ローレンツ力作用向きＦ１側の端部２６１側に向かって曲がりながら引き伸ばされる。すなわち、アークは、第１固定接点保持部材１２や板バネ２３から遠ざかる向きに引き伸ばされる。 First, the arc generated between the first fixed contact 14 and the first movable contact 24 is stretched in the first Lorentz force acting direction F1 by the Lorentz force as shown by the white arrow in FIG. The permanent magnet 26 is stretched while being bent toward the end portion 261 side on the first Lorentz force acting direction F1 side. That is, the arc is stretched in a direction away from the first fixed contact holding member 12 and the leaf spring 23.

ここで、第１永久磁石２６における第１ローレンツ力作用向きＦ１側の端部２６１は、第１固定接点保持部材１２における第１ローレンツ力作用向きＦ１側の側面１２３、および板バネ２３における第１ローレンツ力作用向きＦ１側の側面２３２よりも、第１ローレンツ力作用向きＦ１にさらに延びているため、アークを従来よりも長く引き伸ばすことができる。したがって、低電圧用の電磁継電器のようにアーク長が短い場合は、アークが第１ガイド部１１１の内壁面に衝突する以前にアークが遮断される。 Here, the end 261 of the first permanent magnet 26 on the first Lorentz force acting direction F1 side is the side surface 123 of the first fixed contact holding member 12 on the first Lorentz force acting direction F1 side, and the first end of the leaf spring 23. Since it further extends in the first Lorentz force acting direction F1 than the side surface 232 on the Lorentz force acting direction F1 side, the arc can be stretched longer than in the past. Therefore, when the arc length is short like the low voltage electromagnetic relay, the arc is interrupted before the arc collides with the inner wall surface of the first guide portion 111.

また、高電圧用の電磁継電器のようにアーク長が長い場合は、図４に示すように、そのアークは第１ガイド部１１１の内壁面に衝突した後、第１ガイド部１１１に案内されて第１接点並び方向Ｄ１と略平行な方向に引き伸ばされて遮断される。このように、アークは第１ガイド部１１１に沿って伸びることができるため、ケース１１内の狭い空間内でもアークを充分に引き伸ばすことができ、アークをより確実に遮断することができる。 Further, when the arc length is long as in a high voltage electromagnetic relay, the arc is collided with the inner wall surface of the first guide portion 111 and then guided to the first guide portion 111 as shown in FIG. It is stretched in a direction substantially parallel to the first contact arrangement direction D1 to be blocked. Thus, since the arc can extend along the first guide portion 111, the arc can be sufficiently extended even in a narrow space in the case 11, and the arc can be more reliably interrupted.

一方、第２固定接点１５と第２可動接点２５との間に発生したアークは、図３に白抜き矢印で示すように、ローレンツ力により第２ローレンツ力作用向きＦ２に引き伸ばされつつ、第２永久磁石２７における第２ローレンツ力作用向きＦ２側の端部２７１側に向かって曲がりながら引き伸ばされる。すなわち、アークは、第２固定接点保持部材１３や板バネ２３から遠ざかる向きに引き伸ばされる。 On the other hand, the arc generated between the second fixed contact 15 and the second movable contact 25 is stretched in the second Lorentz force acting direction F2 by the Lorentz force as shown by the white arrow in FIG. The permanent magnet 27 is stretched while being bent toward the end 271 side on the second Lorentz force acting direction F2 side. That is, the arc is stretched in a direction away from the second fixed contact holding member 13 and the leaf spring 23.

ここで、第２永久磁石２７における第２ローレンツ力作用向きＦ２側の端部２７１は、第２固定接点保持部材１３における第２ローレンツ力作用向きＦ２側の側面１３３、および板バネ２３における第２ローレンツ力作用向きＦ２側の
側面２３４よりも、第２ローレンツ力作用向きＦ２にさらに延びているため、アークを従来よりも長く引き伸ばすことができる。したがって、低電圧用の電磁継電器のようにアーク長が短い場合は、アークが第２ガイド部１１２の内壁面に衝突する以前にアークが遮断される。 Here, the end 271 of the second permanent magnet 27 on the second Lorentz force acting direction F2 side is the side surface 133 of the second fixed contact holding member 13 on the second Lorentz force acting direction F2 side and the second side of the leaf spring 23. Since it further extends in the second Lorentz force acting direction F2 than the side surface 234 on the Lorentz force acting direction F2 side, the arc can be stretched longer than before. Therefore, when the arc length is short as in the low voltage electromagnetic relay, the arc is interrupted before the arc collides with the inner wall surface of the second guide portion 112.

また、高電圧用の電磁継電器のようにアーク長が長い場合は、図４に示すように、そのアークは第２ガイド部１１２の内壁面に衝突した後、第２ガイド部１１２に案内されて第２接点並び方向Ｄ２と略平行な方向に引き伸ばされて遮断される。このように、アークは第２ガイド部１１２に沿って伸びることができるため、ケース１１内の狭い空間内でもアークを充分に引き伸ばすことができ、アークをより確実に遮断することができる。 In addition, when the arc length is long as in a high voltage electromagnetic relay, the arc is collided with the inner wall surface of the second guide portion 112 and then guided to the second guide portion 112 as shown in FIG. It is stretched in a direction substantially parallel to the second contact arrangement direction D2 to be blocked. Thus, since the arc can extend along the second guide portion 112, the arc can be sufficiently extended even in a narrow space in the case 11, and the arc can be more reliably interrupted.

また、本実施形態では、第１固定接点１４と第１可動接点２４との間の電圧、および第２固定接点１５と第２可動接点２５との間の電圧は、分圧により半分となり、アーク長が短くなるため、アークをより確実に遮断することができる。 In the present embodiment, the voltage between the first fixed contact 14 and the first movable contact 24 and the voltage between the second fixed contact 15 and the second movable contact 25 are halved by the partial pressure, and the arc Since the length is shortened, the arc can be more reliably interrupted.

また、第１固定接点保持部材１２は、第１固定接点１４の近傍部位が第１磁石配置方向Ｅ１に沿って第１永久磁石２６から遠ざかる向きに延びた後に、第２固定接点保持部材１３から遠ざかる向きに延びており、第２固定接点保持部材１３は、第２固定接点１５の近傍部位が第２磁石配置方向Ｅ２に沿って第２永久磁石２７から遠ざかる向きに延びた後に、第１固定接点保持部材１２から遠ざかる向きに延びているため、第１固定接点保持部材１２と第２固定接点保持部材１３との間の絶縁性を高めることができる。 Further, the first fixed contact holding member 12 extends from the second fixed contact holding member 13 after the vicinity of the first fixed contact 14 extends away from the first permanent magnet 26 along the first magnet arrangement direction E1. The second fixed contact holding member 13 extends in a direction away from the second permanent contact 27 and extends in a direction away from the second permanent magnet 27 along the second magnet arrangement direction E2. Since it extends in a direction away from the contact holding member 12, the insulation between the first fixed contact holding member 12 and the second fixed contact holding member 13 can be enhanced.

（他の実施形態）
上記実施形態では、高電圧用の電磁継電器のようにアーク長が長い場合でもアークを確実に遮断できるようにするために、ガイド部１１１、１１２を設けたが、低電圧用の電磁継電器のようにアーク長が短い場合には、ガイド部１１１、１１２を廃止してもよい。 (Other embodiments)
In the above embodiment, the guide portions 111 and 112 are provided to ensure that the arc can be interrupted even when the arc length is long as in the case of a high voltage electromagnetic relay, but as in the case of a low voltage electromagnetic relay. When the arc length is short, the guide portions 111 and 112 may be eliminated.

また、上記実施形態では、接点間電圧を分圧により半分にするために接離する接点を２組設けたが、接点間電圧を下げる必要がなければ接離する接点を１組にしてもよい。 Further, in the above embodiment, two sets of contacts that contact and separate are provided in order to halve the voltage between the contacts by dividing the voltage. However, if it is not necessary to reduce the voltage between the contacts, one set of contacts that contact and separate may be provided. .

本発明の一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 one 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.

Explanation of symbols

１２第１固定接点保持部材
１３第２固定接点保持部材
１４第１固定接点
１５第２固定接点
１６電磁コイル
２０可動鉄片（可動部材）
２３板バネ（可動部材）
２４第１可動接点
２５第２可動接点
２６第１磁石
２７第２磁石
１２２第１固定接点保持部材の端面
１２３第１固定接点保持部材の側面
１３２第２固定接点保持部材の端面
１３３第２固定接点保持部材の側面
２３１可動部材の端面
２３２可動部材の側面
２３３可動部材の端面
２３４可動部材の側面
２６１第１磁石の端部
２７１第２磁石の端部 12 First Fixed Contact Holding Member 13 Second Fixed Contact Holding Member 14 First Fixed Contact 15 Second Fixed Contact 16 Electromagnetic Coil 20 Movable Iron Piece (Movable Member)
23 Leaf spring (movable member)
24 First movable contact 25 Second movable contact 26 First magnet 27 Second magnet 122 End surface of first fixed contact holding member 123 Side surface of first fixed contact holding member 132 End surface of second fixed contact holding member 133 Second fixed contact Side surface of holding member 231 End surface of movable member 232 Side surface of movable member 233 End surface of movable member 234 Side surface of movable member 261 End portion of first magnet 271 End portion of second magnet

Claims

Fixed contacts (14, 15);
A fixed contact holding member (12, 13) having the fixed contact (14, 15) attached to one end thereof, and positioning and holding the fixed contact (14, 15) at a predetermined position;
An electromagnetic coil (16) that generates electromagnetic force when energized;
A movable member (20, 23) driven by electromagnetic force of the electromagnetic coil (16);
A movable contact (24, 25) that is attached to one end of the movable member (20, 23) and contacts and separates from the fixed contact (14, 15);
Lorentz is arranged on the side of the fixed contact (14, 15) and the movable contact (24, 25), and the arc generated between the fixed contact (14, 15) and the movable contact (24, 25). In an electromagnetic relay comprising magnets (26, 27) for applying force,
The direction of a line passing through the center of the fixed contact (14, 15) and the center of the movable contact (24, 25) is a contact arrangement direction (D1, D2), and the contact arrangement direction (D1, D2). The direction of the line that is orthogonal and passes through the magnets (26, 27) is the magnet arrangement direction (E1, E2), and the fixed contact (14, 15) and the movable contact (24, 25) are in a region facing each other. When the Lorentz force acting direction is the Lorentz force acting direction (F1, F2),
The fixed contact holding members (12, 13) have end faces (122, 132) on the side where the fixed contacts (14, 15) are mounted facing the magnets (26, 27), and at least the fixed contacts (14, 15). ) Extends in the direction away from the magnets (26, 27) along the magnet arrangement direction (E1, E2),
The movable members (20, 23) have end faces (231, 233) on the side where the movable contacts (24, 25) are mounted facing the magnets (26, 27), and at least the movable contacts (24, 25). A nearby portion extends in a direction away from the magnet (26, 27) along the magnet arrangement direction (E1, E2),
The Lorentz force acting direction (F1, F2) is configured to be orthogonal to the contact arrangement direction (D1, D2) and the magnet arrangement direction (E1, E2),
Ends (261, 271) on the Lorentz force acting direction (F1, F2) side of the magnets (26, 27) are the fixed contact (14, 15) mounting portions of the fixed contact holding members (12, 13). The Lorentz force acting direction (F1, F2) on the side surface (123, 133) on the Lorentz force acting direction (F1, F2) side and the movable contact (24, 25) mounting portion of the movable member (20, 23). The electromagnetic relay further extends in the Lorentz force acting direction (F1, F2) than the side surfaces (232, 234) on the) side.

The fixed contacts (14, 15) include a first fixed contact (14) and a second fixed contact (15),
As the fixed contact holding member (12, 13), a first fixed contact holding member (12) to which the first fixed contact (14) is attached and a second fixed to which the second fixed contact (15) is attached. A contact holding member (13),
As the movable contacts (24, 25), a first movable contact (24) contacting and separating from the first fixed contact (14) and a second movable contact (25) contacting and separating from the second fixed contact (15). And
The first movable contact (24) and the second movable contact (25) are attached to the movable member (20, 23),
When the first movable contact (24) contacts the first fixed contact (14) and the second movable contact (25) contacts the second fixed contact (15), the first fixed contact 2. The electromagnetic wave according to claim 1, wherein a contact state between the contact point (14) and the second fixed contact point (15) is established through the movable member (20, 23). relay.

The first fixed contact holding member (12) and the second fixed contact holding member (13) are arranged such that the magnets extend from the end on the fixed contact (14, 15) side along the magnet arrangement direction (E1, E2). 3. The electromagnetic relay according to claim 2, wherein the electromagnetic relay extends in parallel in a direction away from (26, 27), and then extends in a direction away from the other fixed contact holding member.

A direction substantially parallel to the contact arrangement direction (D1, D2) at a portion of the inner wall portion of the case (11) that accommodates the component parts where the arc stretched in the Lorentz force acting direction (F1, F2) collides. The electromagnetic relay according to any one of claims 1 to 3, further comprising a guide portion (111, 112) for guiding the arc.