JPH0357126A - Mbb type relay - Google Patents

Abstract

PURPOSE:To provide an MBB type relay capable of certain MBB operation by constituting a movable spring from a movable contact spring having a NO movable contact mounted on its free end and an auxiliary spring formed by cutting the middle of the movable contact spring, which auxiliary spring has an NC movable contact mounted on its free end extending in opposition to the free end of the movable contact spring. CONSTITUTION:When a coil is excited, the base part 9b of an auxiliary spring 9a is pushed by a card 8, a movable contact spring 9 is driven, and a NO movable contact 11 is made into contact with a fixed contact 12a and closed. When the excitation is continued and the movable contact spring 9 is driven, the auxiliary spring 9a is deflected to the opposite side by the card 8 with the contacting NO movable contact 11 as a support point, so that the NC movable contact 10 is separated from a fixed contract 14a. When the excitation of the coil is stopped, the card 8 is returned to the original direction by the spring force of the movable contact spring 9, and at the same time, the auxiliary spring 9a is returned in a moment to the original state by its own snap action property, so that the NC movable contact 10 is made into contact with the fixed contact 14a in a moment.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、ＮＧ可動接点がＯＦＦする前にＮＯ可動接点
がＯＮＬ、その後の継続動作で前記ＮＣ可動接点がＯＦ
ＦするＭＢＢ形リレーに関する．〔従来の技術〕 従来この種ＭＢＢ形リレーは、第８図（ａ）〜（Ｃ）に
示す接点＃Ｉ底をしており、同ＭＢＢ接点構成は、自由
端の一面にＮＯ可動接点３１、中間の他面にＮＣ可動接
点３２をそれぞれ取着し、基部が接点端子３３に固着さ
れた導電性ばね材よりなる可動接点ばね３０と、 前記ＮＯ、ＮＣ可動接点３１、３２Ｗそれぞれ対向、あ
るいは当接するように配設された固定接点４０，４１と
、 前記ＮＯ，ＮＣ可動接点３１、３２間に設けられ、図外
ｉｔ磁石により作動され、前記可動接点ばね３０を駆動
する合威樹脂等の戒形材よりなる棒状のカード５０と、
よりなり、 前記電磁石のコイルを励磁する前は、同図（ａ）のよう
に、カード５０が可動接点ばね３０に接触せず、ＮＯ可
動接点３ｌは固定接点４０より開離し、ＮＣ可動接点３
２は固定接点４１に当接している。Detailed Description of the Invention [Field of Industrial Application] The present invention is characterized in that the NO movable contact turns ON before the NG movable contact turns OFF, and the NC movable contact turns OFF during subsequent continuous operation.
Concerning MBB type relays. [Prior Art] Conventionally, this type of MBB type relay has a contact #I bottom as shown in FIGS. An NC movable contact 32 is attached to the other surface of the middle, and a movable contact spring 30 made of a conductive spring material whose base is fixed to a contact terminal 33 and the NO and NC movable contacts 31 and 32W are respectively opposed to or in contact with each other. It is provided between the fixed contacts 40 and 41 that are arranged so as to be in contact with each other and the NO and NC movable contacts 31 and 32, and is actuated by an IT magnet (not shown), and is made of a resin or the like that drives the movable contact spring 30. A rod-shaped card 50 made of a shaped material,
Therefore, before the coil of the electromagnet is excited, the card 50 does not contact the movable contact spring 30, the NO movable contact 3l is separated from the fixed contact 40, and the NC movable contact 3
2 is in contact with the fixed contact 41.

コイルを励磁すると、まず、同図（ｂ）に示すように、
カード５０が移動して、可動接点ばね３０が駆動され、
前記ＮＯ可動接点３１が固定接点４０に当接し、前記Ｎ
Ｃ可動接点３２とともに両可動接点３１、３２が閉成さ
れる。When the coil is excited, first, as shown in the same figure (b),
The card 50 moves, the movable contact spring 30 is driven,
The NO movable contact 31 abuts the fixed contact 40, and the NO movable contact 31 contacts the fixed contact 40,
Both movable contacts 31 and 32 are closed together with the C movable contact 32.

さらにコイルの励磁を継続すると同図（ｃ）のように、
可動接点ばね３０がその基部を支点として反転してたわ
み、前記ＮＣ可動接点３２が固定接点４ｌより開離する
ものであり、いわゆるＭＢＢ動作を行うものである。If the coil is further excited, as shown in the same figure (c),
The movable contact spring 30 is inverted and deflected using its base as a fulcrum, and the NC movable contact 32 is separated from the fixed contact 4l, thereby performing a so-called MBB operation.

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

従来例で説明したＭＢＢ形リレーは、一枚の可動接点ば
ね３０でＭＢＢ動作を達成できるので、実開昭５９−１
０４４４１号公報や、特開昭６ｌ−１６８８３１号公報
のように、２枚の可動接点ばねを設ける必要がなく、部
品点数を低減させることができ、組立製作が容易にでき
るという利点を有するが、カード５０で可動接点ばね３
０を駆動し、ＮＯ可動接点３１を固定接点４０に当接さ
せて、両可動接点３１、３２ともに閉成させるときに、
ＮＣ可動接点３２には開離させる方向に駆動力が働くた
め、ＮＯ可動接点３１及びそれに当接される固定接点４
０が高容量負荷を開閉したことにより、接点消耗した場
合などに、カード５０の移動量、すなわち可動接点ばね
３０のストロークが大きくなると、前記ＮＯ可動接点３
ｌが固定接点４０に当接する前に、ＮＣ可動接点３２が
固定接点４ｌより開離することがあり、正常なＭＢＢ動
作ができずこのため両固定接点４０、４１間の取付位置
精度及び、可動接点ばね３０のストローク変化量の管理
を精度良く行う必要があり、組立製作し難いという問題
があった。The MBB type relay explained in the conventional example can achieve MBB operation with a single movable contact spring 30, so
Unlike Japanese Patent Application Publication No. 04441 and Japanese Patent Application Laid-Open No. 61-168831, this method has the advantage that it is not necessary to provide two movable contact springs, the number of parts can be reduced, and assembly can be easily manufactured. Movable contact spring 3 with card 50
When the NO movable contact 31 is brought into contact with the fixed contact 40 and both movable contacts 31 and 32 are closed,
Since a driving force acts on the NC movable contact 32 in the direction of opening and opening, the NO movable contact 31 and the fixed contact 4 in contact with it
When the contact wears out due to opening/closing of a high-capacity load, the amount of movement of the card 50, that is, the stroke of the movable contact spring 30 increases, the NO movable contact 3
The NC movable contact 32 may be separated from the fixed contact 4l before the contact 41 contacts the fixed contact 40, and normal MBB operation cannot be performed. It is necessary to accurately manage the amount of change in stroke of the contact spring 30, and there is a problem in that it is difficult to assemble and manufacture.

本発明は前記問題点に着目し改善を図ったものであって
、その目的とするところは組立製作が容易で確実なＭＢ
Ｂ動作ができるＭＢＢ形リレーを提供するにある． 〔課題を解決するための手段〕 前記問題点を解決するため本発明ＭＢＢ形リレーは、可
動ばねを、自由端にＮＯ可動接点を取着した可動接点ば
ねと、該可動接点ばねの中間を切り欠きこの可動接点ば
ねの自由端と反対方向に延びる自由端へＮＣ可動接点を
取着した補助ばねとから構成し、カードにより前記補助
ばねの基部を駆動し、ＮＯ可動接点が閉威した後、ＮＣ
可動接点を前記ＮＯ可動接点の当接点を支点として反転
させ、固定接点から開離させている． 〔作　用］ 本発明は可動接点ばねのＮＯ可動接点が閉戒することを
きっかけに、補助ばねのＮＣ可動接点が反転し、固定接
点から開離するので、確実なＭＢＢ動作を行うことがで
きる． 〔実施例〕 以下本発明の一実施例を第１図からに基づき説明する． 第１図及び第２図において、 １は一端に磁極部１ａを有した磁性体よりなる略コ形を
したヨークで、磁極部２ａを有したもう一方の略Ｌ形の
ヨーク２とともに片側部に永久磁石３を介置している． ４は磁性体よりなる略Ｔ形のアマチュアで幅広の基部４
ｂを前記ヨークｌの他端１ｂにヒンジ押さえばね５によ
りヒンジ係合するとともに中間がコイル７を巻装したコ
イル枠６に挿通されている前記アマチュア４のコイル枠
６から突出した自由端にはカード８を取着する切欠４ａ
，４ａが設けられている． カード８は合戒樹脂等の成形材よりなり、中間に前記ア
マチュア４の自由端に挿通される突起８ｂが設けられて
おり、該突起８ｂの両側にはアマチュア４の切欠４ａ，
４ａに係合する突起８ａ、８ａが設けられている． ９は導電性のばね材よりなる可動接点ばねで基部９ｄが
共通端子ｌ３に固着されるとともに、その自由端９ｃの
一面には固定接点１２ａと対向するＮＯ可動接点１１が
取着されている。The present invention focuses on and improves the above-mentioned problems, and its purpose is to provide a reliable MB that is easy to assemble and produce.
To provide an MBB type relay capable of B operation. [Means for Solving the Problems] In order to solve the above problems, the MBB type relay of the present invention includes a movable spring having an NO movable contact attached to its free end, and a movable contact spring that is cut in the middle between the movable contact spring. The cutout is composed of a free end of the movable contact spring and an auxiliary spring having an NC movable contact attached to the free end extending in the opposite direction, and the base of the auxiliary spring is driven by a card, and after the NO movable contact is closed, N.C.
The movable contact is reversed using the abutment point of the NO movable contact as a fulcrum, and separated from the fixed contact. [Function] In the present invention, when the NO movable contact of the movable contact spring is closed, the NC movable contact of the auxiliary spring is reversed and separated from the fixed contact, so that reliable MBB operation can be performed. ．． [Example] An example of the present invention will be described below based on FIG. 1. In FIGS. 1 and 2, 1 is a substantially U-shaped yoke made of a magnetic material having a magnetic pole portion 1a at one end, and a yoke 1 having a substantially L-shaped yoke 2 having a magnetic pole portion 2a on one side. A permanent magnet 3 is inserted. 4 is a roughly T-shaped armature made of magnetic material with a wide base 4
b is hingedly engaged with the other end 1b of the yoke l by a hinge presser spring 5, and the free end protruding from the coil frame 6 of the armature 4 is inserted into the coil frame 6 around which the coil 7 is wound in the middle. Notch 4a for attaching card 8
, 4a are provided. The card 8 is made of a molded material such as a resin, and is provided with a protrusion 8b inserted into the free end of the armature 4 in the middle.
4a are provided with protrusions 8a, 8a that engage with. Reference numeral 9 denotes a movable contact spring made of a conductive spring material, and its base 9d is fixed to the common terminal l3, and the NO movable contact 11 facing the fixed contact 12a is attached to one surface of its free end 9c.

前記可動接点ばね９の中間は略コ形に切欠かれ、自由端
９ｅが前記可動接点ばね９の自由端９ｃと逆方向に延び
る補助ばね９ａが一体に形威されている． 前記補助ばね９ａの自由端９ｅには固定接点１４ａに当
接するＮＣ可動接点１０が取着されている。The middle of the movable contact spring 9 is cut out in a substantially U-shape, and an auxiliary spring 9a whose free end 9e extends in the opposite direction to the free end 9c of the movable contact spring 9 is integrally formed. An NC movable contact 10 that comes into contact with the fixed contact 14a is attached to the free end 9e of the auxiliary spring 9a.

各固定接点１２ａ，１４ａはそれぞれ前記共通端子ｌ３
とともにベース１５の片側に所定間隔を開けて、植設さ
れた接点端子ｌ２、１４に取着されている。Each fixed contact 12a, 14a is connected to the common terminal l3.
It is also attached to contact terminals l2 and 14 planted on one side of the base 15 at a predetermined interval.

ヘース１５は合成樹脂等の戒形材よりなり、中間凹所１
５ａに前記各ヨーク１、２と永久磁石３のそれぞれを嵌
着している。The heath 15 is made of a shaped material such as synthetic resin, and the intermediate recess 1
Each of the yokes 1 and 2 and the permanent magnet 3 are fitted onto the yoke 5a.

ｌ６、１６はベースＩ５に植設されたコイル端子で、一
端に前記コイル７の端末６ａ、６ｂがそれぞれはんだつ
け等により固着されている。16 and 16 are coil terminals implanted in the base I5, to one end of which terminals 6a and 6b of the coil 7 are respectively fixed by soldering or the like.

１７は合戒樹脂等の戒形材よりなる略箱形のケースで前
記ヘース１５に嵌着されている。Reference numeral 17 denotes a substantially box-shaped case made of a plastic material such as plastic resin, which is fitted onto the heath 15.

前記各部品は第２図のように明み立てられ、前記アマチ
ュア４の自由端はそれぞれヨーク１、２の磁極部１ａ、
２８間にコイル７の励磁により反転自在に介挿され、該
自由端に取着したカード８の一端は、前記補助ばね９ａ
の基部９ｂに接触している。The above-mentioned parts are set up as shown in FIG.
One end of the card 8 attached to the free end is inserted between the auxiliary springs 9a and 28 so as to be reversible by the excitation of the coil 7.
is in contact with the base 9b of.

次に、第３図（ａ）〜（ｃ）を基に接点部の動作につい
て説明する． コイル７を励磁する前は、同図（ａ）のように共通端子
１３を軸としてカード８側に該共通端子ｌ３をひねり変
形させ、補助ばね９ａのＮＣ可動接点１０が充分な接点
圧力を持って固定接点１４ａに当接するようにしており
、可動接点ばね９に設けたＮＯ可動接点ｌ１は所定の接
点ギャップを持って、固定接点１２ａに対向して設けら
れている。Next, the operation of the contact portion will be explained based on FIGS. 3(a) to 3(c). Before the coil 7 is energized, the common terminal 13 is twisted and deformed toward the card 8 side with the common terminal 13 as an axis as shown in FIG. The NO movable contact l1 provided on the movable contact spring 9 is provided opposite to the fixed contact 12a with a predetermined contact gap.

次に、前記コイル７を励磁すると、まず同図（ｂ）のよ
うに補助ばね９ａの基部９ｂをカード８が押圧し、可動
接点ばね９が駆動され、ＮＯ可動接点ｌ１が固定接点１
２ａに当接し閉威する。この状態では、他方のＮＣ可動
接点１０もまだ固定接点１４ａに当接したままであり、
両可動接点１０、１１ともに閉成している． 前記コイル７の励磁を継続し、可動接点ばね９が駆動さ
れると、同図（Ｃ）のごとく、補助ばね９ａは当接した
ＮＯ可動接点１１を支点としてカード８により、反対側
にたわむため、前記ＮＣ可動接点ｌＯが固定接点１４ａ
より開離されるものである。このように、ＮＣ可動接点
１０はＮＯ可動接点１１が閉威するまでカード８で可動
接点ばね９を駆動しても、絶対に開離しないようにして
いる。Next, when the coil 7 is excited, the card 8 presses the base 9b of the auxiliary spring 9a as shown in FIG.
2a and closes. In this state, the other NC movable contact 10 is still in contact with the fixed contact 14a,
Both movable contacts 10 and 11 are closed. When the coil 7 continues to be energized and the movable contact spring 9 is driven, the auxiliary spring 9a is deflected to the opposite side by the card 8 with the NO movable contact 11 in contact as a fulcrum, as shown in FIG. , the NC movable contact lO is a fixed contact 14a
It is more separated. In this way, the NC movable contact 10 never opens even if the movable contact spring 9 is driven by the card 8 until the NO movable contact 11 closes.

コイル７の励磁を停止すると、カード８は可動接点ばね
９のばね力により元の方向に復帰し、それと同時に前記
補助ばね９ａは自らのスナップアクション性により瞬間
的に元の状態に戻るため、ＮＣ可動接点ｌＯは瞬時に固
定接点１４ａに当接する．その後、さらにカード８が移
動すると、ＮＯ可動接点１１が固定接点１２ａより開離
するものである。When the excitation of the coil 7 is stopped, the card 8 returns to its original direction due to the spring force of the movable contact spring 9, and at the same time, the auxiliary spring 9a instantly returns to its original state due to its own snap action property, so that the NC The movable contact lO instantly contacts the fixed contact 14a. Thereafter, when the card 8 moves further, the NO movable contact 11 opens more than the fixed contact 12a.

第４図から第６図はそれぞれ補助ばね９ａ’の別の実施
例を示したものである． 第４図は、補助ばね９ａ’の基部より固定接点１４ａの
方向にあらかじめ折曲させたものであり、この場合、前
記実施例のように可動接点ばね９の基部を固着した共通
端子１３をひねってＮＣ可動接点１０の接点圧調整を行
う必要がなく、組立調整が簡単にできる． 第５図及び第６図はそれぞれ、可動接点ばね９を片側よ
り切欠き、補助ばね９ａ“を形威したもので、第５図は
第６図の補助ばね９ａ’の折曲したものである． 第７図（ａ）〜（ｃ）はあらかじめ、可動接点ばね９の
自由端をベースｌ５やケース１７等に設けた突起２０に
より、弾接保持した別の実施例を示すものであり、この
場合、コイル７の無励磁時にカード８が補助ばね９ａに
当接していないので外部から多少の振動、衝撃等が加わ
り、カード８が移動しても接点の誤動作が発生しないも
のである。4 to 6 each show another embodiment of the auxiliary spring 9a'. In FIG. 4, the base of the auxiliary spring 9a' is bent in advance in the direction of the fixed contact 14a. In this case, the common terminal 13 fixed to the base of the movable contact spring 9 as in the previous embodiment is twisted. There is no need to adjust the contact pressure of the NC movable contact 10 by using the switch, and assembly and adjustment can be easily performed. Figures 5 and 6 each show a movable contact spring 9 cut out from one side to form an auxiliary spring 9a'', and Figure 5 is a bent version of the auxiliary spring 9a' in Figure 6. 7(a) to (c) show another embodiment in which the free end of the movable contact spring 9 is elastically held by a protrusion 20 provided on the base l5, the case 17, etc. In this case, since the card 8 is not in contact with the auxiliary spring 9a when the coil 7 is not energized, malfunction of the contacts will not occur even if some external vibrations, shocks, etc. are applied and the card 8 moves.

〔発明の効果〕〔Effect of the invention〕

以上説明したように、本発明ＭＢＢ形リレーは、自由端
にＮＯ可動接点を設けた可動接点ばねと、該可動接点ば
ね中間を切り欠き前記自由端と逆方向に延びる自由端に
ＮＣ可動接点を設けた補助ばねとから可動ばねを構威し
、カードにより前記補助ばねの基部を駆動し、ＮＯ可動
接点閉成した後、補助ばねを前記ＮＯ可動接点の当接点
を支点として反転させ、ＮＣ可動接点を固定接点から開
離させることにより、ＮＣ可動接点はＮＯ可動接点の閉
或をきっかけに開離されるので、確実なＭＢＢ動作がで
きるＭＢＢ形リレーを得ることができ、しかも従来のご
とく両固定接点の取付位置精度及び可動ばねのストロー
ク変化量の管理をシビアに行う必要がなく、比較的ラフ
な組立製作が可能で極めて組立製作の容易なＭＢＢ形リ
レーを得ることができる。As explained above, the MBB type relay of the present invention includes a movable contact spring provided with an NO movable contact at the free end, a cutout in the middle of the movable contact spring, and an NC movable contact at the free end extending in the opposite direction to the free end. A movable spring is constructed from the provided auxiliary spring, the base of the auxiliary spring is driven by a card, the NO movable contact is closed, the auxiliary spring is reversed using the contact point of the NO movable contact as a fulcrum, and the NC movable By opening and separating the contact from the fixed contact, the NC movable contact is triggered by the closing or opening of the NO movable contact, so it is possible to obtain an MBB type relay that can perform reliable MBB operation, and yet, it is possible to obtain an MBB type relay that can perform reliable MBB operation. It is not necessary to strictly control the mounting position accuracy of the contact points and the amount of stroke change of the movable spring, and it is possible to obtain an MBB type relay that is extremely easy to assemble and manufacture, allowing relatively rough assembly and manufacturing.

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

第１図は本発明の一実施例を示す、 分解斜視図、 第２図は、同上の組立斜視図、 第３図（ａ）〜（ｃ）は同上のそれぞれ動作過程を示す
それぞれ要部平面図、 第４図は、可動ばねの第２実施例を示す斜視図、第５図
は、同上の第３実施例を示す斜視図、第６図は、同上の
第４実施例を示す斜視図、第７図（ａ）〜（Ｃ）は別の
実施例のそれぞれ動作過程を示すそれぞれ要部平面図、 第８図（ａ）〜（ｃ）は従来例のそれぞれ動作過程を示
すそれぞれ要部平面図である。 ８　・　・　・カード、 ９・・・可動接点ばね、９ａ・・・補助ばね、９ｂ・・
・基部、９ｃ、９Ｃ・・・自由端、１０・・・ＮＣ可動
接点、 ｌ１・・・ＮＯ可動接点。Fig. 1 is an exploded perspective view showing one embodiment of the present invention, Fig. 2 is an assembled perspective view of the same, and Figs. 3 (a) to (c) are plan views of main parts showing the respective operating processes of the above. Figure 4 is a perspective view showing the second embodiment of the movable spring, Figure 5 is a perspective view showing the third embodiment of the same, and Figure 6 is a perspective view showing the fourth embodiment of the same. , FIGS. 7(a) to (C) are plan views of the main parts showing the respective operating processes of another embodiment, and FIGS. 8(a) to (c) are respective main parts showing the respective operating processes of the conventional example. FIG. 8...Card, 9...Movable contact spring, 9a...Auxiliary spring, 9b...
・Base, 9c, 9C...Free end, 10...NC movable contact, l1...NO movable contact.

Claims (1)

【特許請求の範囲】 １）電磁石の動作によりカードを介して駆動される可動
ばねと、 該可動ばねの両面にずらせて設けられた一対のＮＣ、Ｎ
Ｏ可動接点に対向、もしくは当接する固定接点とからな
り、 前記ＮＣ可動接点が一方の固定接点より開離する前に、
ＮＯ可動接点が他方の固定接点に当接し、その後可動接
点ばねが動作することにより、前記ＮＣ可動接点が固定
接点から開離するＭＢＢ形リレーにおいて、 前記可動ばねが、自由端にＮＯ可動接点を取着した可動
接点ばねと、該可動接点ばねの中間から切り欠かれ、前
記自由端と反対方向に延びる自由端にＮＣ可動接点を設
けた補助ばねとからなり、前記カードで補助ばねの基部
を駆動し、ＮＯ可動接点が固定接点に当接した後、ＮＣ
可動接点がＮＯ可動接点を支点として反転し、固定接点
より開離してなることを特徴とするＭＢＢ形リレー。[Scope of Claims] 1) A movable spring driven via a card by the operation of an electromagnet, and a pair of NCs and Ns provided on both sides of the movable spring in a staggered manner.
It consists of a fixed contact that faces or comes into contact with the O movable contact, and before the NC movable contact is separated from one of the fixed contacts,
In an MBB type relay in which the NO movable contact contacts the other fixed contact and then the movable contact spring operates, the NC movable contact separates from the fixed contact. It consists of an attached movable contact spring and an auxiliary spring which is cut out from the middle of the movable contact spring and has an NC movable contact at the free end that extends in the opposite direction to the free end, and the base of the auxiliary spring is connected with the card. After the NO movable contact contacts the fixed contact, the NC
An MBB type relay characterized in that the movable contact reverses around the NO movable contact as a fulcrum and opens from the fixed contact.