JPH04106829A - Electromagnetic relay - Google Patents

Abstract

PURPOSE:To plan to increase a withstand voltage between a coil and a contact by providing a slot portion in a coil terminal holding section around a coil terminal. CONSTITUTION:A coil assembly provided with a york, a coil bobbin and a contact spring driving body is mounted on a contact spring assembly whose base a fixing terminal and a movable spring terminal interpolated, and the whole body is covered and a slot portion 18 is formed in a part of a coil terminal holding section 7 held by a coil terminal 15. Accordingly the creeping distance from the coil terminal 15 and to a York 6 becomes longer by the depth of the slot 18, and a withstand voltage between the coil terminal 15 and the york is increased. Thereby the withstand voltage between a coil and a contact can be increased.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は電磁継電器に関し、特に絶縁耐圧を改善する電
磁継電器に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electromagnetic relay, and particularly to an electromagnetic relay that improves dielectric strength.

〔従来の技術〕[Conventional technology]

従来、この種の電磁継電器は、接点ばね組立体やコイル
組立体および接点ばね駆動体を有して構成される。また
、かかる電磁継電器の特性の一つを決める絶縁耐圧はコ
イル端子を保持コイル端子保持部の表面から接点部まで
の沿面距離により決定されている。Conventionally, this type of electromagnetic relay includes a contact spring assembly, a coil assembly, and a contact spring driver. Further, the dielectric strength voltage, which determines one of the characteristics of such an electromagnetic relay, is determined by the creepage distance from the surface of the coil terminal holder holding the coil terminal to the contact portion.

第３図はかかる従来の一例を示す電磁継電器の分解斜視
図である。FIG. 3 is an exploded perspective view of an electromagnetic relay showing an example of such a conventional electromagnetic relay.

第３図に示すように、従来の電磁継電器はベース１０に
可動接点ばね１２の端子や固定端子１１を植設した接点
ばね組立体８と、コイル１３が巻回されたコイルボビン
に鉄心５およびヨーク６を固定したコイル組立体と、接
点ばね組立体８に固定され且つ永久磁石３と２枚の磁極
板２ａ、２ｂを保持した接点ばね駆動体４と、カバー１
とを有する。このコイル組立体は接点ばね組立体８に固
定され、また永久磁石３と２枚の磁極板２ａ。As shown in FIG. 3, a conventional electromagnetic relay includes a contact spring assembly 8 in which terminals of a movable contact spring 12 and fixed terminals 11 are implanted in a base 10, an iron core 5 and a yoke on a coil bobbin around which a coil 13 is wound. 6, a contact spring driver 4 fixed to the contact spring assembly 8 and holding the permanent magnet 3 and the two magnetic pole plates 2a and 2b, and the cover 1.
and has. This coil assembly is fixed to a contact spring assembly 8, and also includes a permanent magnet 3 and two magnetic pole plates 2a.

２ｂを保持した接点ばね駆動体４も接点ばね組立体８の
上から配置され、カバー１を被せられる。The contact spring driver 4 holding the contact spring assembly 2b is also placed over the contact spring assembly 8 and covered with the cover 1.

また、コイルボビンは両端にフランジ１４Ａ。Also, the coil bobbin has flanges 14A on both ends.

１４Ｂを形成し、側面にはコイル１３から引出した引出
し線１６を巻きつけるコイル端子１５を保持するための
コイル端子保持部７を形成している。このコイル端子保
持部７の前面フランジ部１４Ａは接点ばね駆動体４を揺
動保持する保持部９を有する。この接点ばね駆動体４は
鉄心５の軸方向に対して垂直方向に動作することにより
、接点ばね組立体８を構成するベース１０にベース嵌合
穴１７を介して固定されたコイル端子保持部７の両側部
に位置する可動接点ばね１２を変位させ、接点を開閉さ
せる。14B, and a coil terminal holding portion 7 for holding the coil terminal 15 around which the lead wire 16 drawn out from the coil 13 is wound is formed on the side surface. The front flange portion 14A of the coil terminal holding portion 7 has a holding portion 9 that swingably holds the contact spring driver 4. This contact spring driver 4 operates in a direction perpendicular to the axial direction of the iron core 5, so that the coil terminal holding portion 7 is fixed to the base 10 constituting the contact spring assembly 8 via the base fitting hole 17. The movable contact springs 12 located on both sides of the contact springs 12 are displaced to open and close the contacts.

ここで、組立てられた電磁継電器の絶縁耐圧はコイルボ
ビンの側面に形成されるコイル端子保持部７のコイル端
子１５が突出する表面から接点部までの距離によって決
定されている。Here, the dielectric strength voltage of the assembled electromagnetic relay is determined by the distance from the surface of the coil terminal holding portion 7 formed on the side surface of the coil bobbin from which the coil terminal 15 protrudes to the contact portion.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

上述した従来の電磁継電器は、コイル端子保持部の表面
からコイル端子が突出しているため、コイル端子とヨー
ク間の沿面距離が短い、。従って、コイル端子とヨーつ
て高い絶縁耐圧を得られなし）ので、コイルと接点間の
絶縁耐圧を高くできないという欠点がある。In the conventional electromagnetic relay described above, since the coil terminal protrudes from the surface of the coil terminal holding portion, the creepage distance between the coil terminal and the yoke is short. Therefore, it is not possible to obtain a high dielectric strength voltage between the coil terminal and the contact, so there is a drawback that the dielectric strength voltage between the coil and the contact cannot be increased.

本発明の目的は、かかるコイルと接点間の絶縁耐圧を向
上させることのできる電磁継電器を提供することにある
。An object of the present invention is to provide an electromagnetic relay that can improve the dielectric strength between the coil and the contacts.

〔課題を解決するための手段〕[Means to solve the problem]

本発明の電磁継電器は、ベースへ固定端子および可動ば
ね端子を植設した接点ばね組立体にヨークやコイルボビ
ンおよび接点ばね駆動体を設けたコイル組立体を搭載し
、全体をカバーで覆って構成される電磁継電器において
、コイル端子が貫通するコイル端子保持部の一部に前記
コイル端子に沿った溝部を形成するように構成される。The electromagnetic relay of the present invention includes a contact spring assembly in which a fixed terminal and a movable spring terminal are embedded in a base, a coil assembly in which a yoke, a coil bobbin, and a contact spring driver are mounted, and the entire body is covered with a cover. In this electromagnetic relay, a groove portion along the coil terminal is formed in a part of the coil terminal holding portion through which the coil terminal passes.

〔実施例〕〔Example〕

次に、本発明の実施例について図面を参照して説明する
。Next, embodiments of the present invention will be described with reference to the drawings.

第１図は本発明の第一の実施例を説明するための電磁継
電器におけるコイル端子保持部の拡大斜視図である。FIG. 1 is an enlarged perspective view of a coil terminal holding portion in an electromagnetic relay for explaining a first embodiment of the present invention.

第１図に示すように、本実施例の全体的な構成は前述し
た第３図の分解斜視図と同様であり、ここでは相異する
個所についてのみを表わしている。As shown in FIG. 1, the overall configuration of this embodiment is similar to the exploded perspective view of FIG. 3 described above, and only the different parts are shown here.

すなわち、本実施例は、第３図の電磁継電器において、
コイル端子１５が保持されるコイル端子保持部７の一部
に溝部１８を形成することにある。これにより、コイル
端子１５とヨーク６までの沿面距離は溝の深さだけ長く
なる。従って、コイル端子１５とヨーク６間の絶縁耐圧
が向上し、コイルと接点間の絶縁耐圧が高くなる。That is, in this embodiment, in the electromagnetic relay shown in FIG.
A groove portion 18 is formed in a part of the coil terminal holding portion 7 in which the coil terminal 15 is held. As a result, the creepage distance between the coil terminal 15 and the yoke 6 becomes longer by the depth of the groove. Therefore, the dielectric strength between the coil terminal 15 and the yoke 6 is improved, and the dielectric strength between the coil and the contact point is increased.

尚、その他ベース１０に対するコイル端子保持部７の嵌
合穴１７等については、従来例と同様である。Note that the other fitting holes 17 and the like of the coil terminal holding portion 7 with respect to the base 10 are the same as in the conventional example.

第２図は本発明の第二の実施例を説明するための電磁継
電器におけるコイル端子保持部の拡大斜視図である。FIG. 2 is an enlarged perspective view of a coil terminal holding portion in an electromagnetic relay for explaining a second embodiment of the present invention.

第２図に示すように、本実施例はコイル端子保持部７に
おけるコイル端子１５の回りの溝に大きな第一の溝部１
８と小さな第二の溝部１９を形成し、段差を設けること
により、前述した第一の実施例よりも沿面距離を長くで
きる。これにより、コイル端子１５とヨーク６間の絶縁
耐圧が向上するので、コイルと接点間の絶縁耐圧を高く
できる。As shown in FIG. 2, this embodiment has a large first groove 1 in the groove around the coil terminal 15 in the coil terminal holding part 7
By forming a small second groove 19 and providing a step, the creepage distance can be made longer than in the first embodiment described above. This improves the dielectric strength between the coil terminal 15 and the yoke 6, thereby increasing the dielectric strength between the coil and the contact.

〔発明の効果〕〔Effect of the invention〕

以上説明したように、本発明の電磁継電器は、コイル端
子の回りのコイル端子保持部に溝部を設けることにより
、コイル端子とヨーク間の沿面距離を伸ばすことができ
るので、コイルと接点間の絶縁耐圧を向上させることが
できるという効果を有する。As explained above, in the electromagnetic relay of the present invention, the creepage distance between the coil terminal and the yoke can be increased by providing a groove in the coil terminal holding portion around the coil terminal. This has the effect of improving breakdown voltage.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の第一の実施例を説明するための電磁継
電器におけるコイル端子保持部の拡大斜視図、第２図は
本発明の第二の実施例を説明するための電磁継電器にお
けるコイル端子保持部の拡大斜視図、第３図は従来の一
例を示す電磁継電器の分解斜視図である。 １・・・カバー、４・・・接点ばね駆動体、６・・ヨー
ク、７・・コイル端子保持部、８・・・接点ばね組立体
、１０・・・ベース、１２・・・可動接点ばね、１４Ａ
、１４Ｂ・・・フランジ、１５・・・コイル端子、１７
・・ベース嵌合穴、１８．１９・・・溝部。FIG. 1 is an enlarged perspective view of a coil terminal holder in an electromagnetic relay for explaining a first embodiment of the present invention, and FIG. 2 is a coil in an electromagnetic relay for explaining a second embodiment of the present invention. FIG. 3 is an exploded perspective view of an electromagnetic relay showing an example of a conventional electromagnetic relay. DESCRIPTION OF SYMBOLS 1...Cover, 4...Contact spring driver, 6...Yoke, 7...Coil terminal holding part, 8...Contact spring assembly, 10...Base, 12...Movable contact spring , 14A
, 14B...Flange, 15...Coil terminal, 17
...Base fitting hole, 18.19...Groove.

Claims (1)

【特許請求の範囲】 １、ベースへ固定端子および可動ばね端子を植設した接
点ばね組立体にヨークやコイルボビンおよび接点ばね駆
動体を設けたコイル組立体を搭載し、全体をカバーで覆
つて構成される電磁継電器において、コイル端子が貫通
するコイル端子保持部の一部に前記コイル端子に沿った
溝部を形成することを特徴とする電磁継電器。 ２、前記溝部は複数個設けられ、しかも前記コイル端子
保持部の表面から内部に向かって小さくなるような段差
を形成することを特徴とする請求項１記載の電磁継電器
。[Claims] 1. A contact spring assembly in which a fixed terminal and a movable spring terminal are embedded in a base, a coil assembly including a yoke, a coil bobbin, and a contact spring driver is mounted on the contact spring assembly, and the whole is covered with a cover. An electromagnetic relay characterized in that a groove portion along the coil terminal is formed in a part of the coil terminal holding portion through which the coil terminal passes. 2. The electromagnetic relay according to claim 1, wherein a plurality of said groove portions are provided, and further, a step is formed such that the groove portion becomes smaller from the surface of the coil terminal holding portion toward the inside.