JPH0668765A - Contact point opening and closing device - Google Patents
Contact point opening and closing deviceInfo
- Publication number
- JPH0668765A JPH0668765A JP22429892A JP22429892A JPH0668765A JP H0668765 A JPH0668765 A JP H0668765A JP 22429892 A JP22429892 A JP 22429892A JP 22429892 A JP22429892 A JP 22429892A JP H0668765 A JPH0668765 A JP H0668765A
- Authority
- JP
- Japan
- Prior art keywords
- contact
- low resistance
- arc
- fixed
- movable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、照明制御などの突入
電流の大きな負荷を開閉するリレーなどに利用される接
点開閉装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a contact switching device used for a relay for switching a load having a large inrush current such as lighting control.
【０００２】[0002]
【従来の技術】従来、電磁継電器に用いられる接点開閉
装置としては、固定接点板に固定接点を固着し、電磁石
装置などの可動部材に連結された駆動部材により駆動さ
れる可動接点板に可動接点を固着したような構造になっ
ている。ところで、コンデンサ負荷やランプ負荷のよう
な負荷を開閉する開閉する場合には大きな突入電流が流
れる。このような負荷の開閉に上記の接点開閉装置を用
いると、その突入電流によって発生するアークにより接
点溶着の恐れがあるので、その対策として接点材料にタ
ングステンなどの耐溶着性の良好な材料が用いられてい
る。しかし、このような接点材料は、抵抗値が大きいた
め接点閉成状態における温度上昇が高くなる。2. Description of the Related Art Conventionally, as a contact switching device used in an electromagnetic relay, a fixed contact is fixed to a fixed contact plate, and a movable contact plate is driven by a driving member connected to a movable member such as an electromagnet device. It has a structure in which is fixed. By the way, a large inrush current flows when opening and closing a load such as a capacitor load or a lamp load. If the above contact switchgear is used to open and close such a load, there is a risk of contact welding due to the arc generated by the inrush current, so as a countermeasure against this, use a material with good welding resistance, such as tungsten. Has been. However, since such a contact material has a large resistance value, the temperature rises in the closed contact state.
【０００３】そこで、耐溶着性の良好なアーク用接点と
低抵抗接点を併用したダブル接点機構の接点開閉装置
が、実公昭５１−２３８６３号公報，実公昭５５−４２
３４１号公報，特開昭６１−２３３９１９号公報，特開
昭６２−７１１３７号公報，特開昭６２−７１１３８号
公報などに示されている。図９に実公昭５１−２３８６
３号公報の接点開閉装置を示し、(a) はその接点部斜視
図、(b) はその閉成状態を示す図、(c) はその開成状態
を示す図である。図９において、３１はアーク用と低抵
抗接点からなる可動接点、３２はアーク用固定接点、３
３は低抵抗固定接点、３４は可動接点板、３５は固定接
点板である。図１０に実公昭５５−４２３４１号公報の
接点開閉装置を示し、(a) はその接点部斜視図、(b) は
その開成状態を示す図である。図１０において、４１は
アーク用と低抵抗接点からなる可動接点、４２はアーク
用固定接点、４３は低抵抗固定接点、４４は可動接点
板、４５は固定接点板である。また、図１１は特開昭６
１−２３３９１９号公報の接点開閉装置の開成状態を示
す図である。図１１において、５１はアーク用と低抵抗
接点からなる可動接点、５２はアーク用固定接点、５３
は低抵抗固定接点である。Therefore, a contact opening / closing device of a double contact mechanism using both arc contacts having good welding resistance and low resistance contacts is disclosed in Japanese Utility Model Publication No. 51-23863 and Japanese Utility Model Publication 55-42.
No. 341, JP 61-233919, JP 62-71137, and JP 62-71138. Fig. 9 shows the actual Kosho 51-2386.
3A and 3B show the contact opening / closing device of FIG. 3, in which FIG. 3A is a perspective view of the contact portion, FIG. In FIG. 9, 31 is a movable contact consisting of an arc and a low resistance contact, 32 is a fixed contact for arc, and 3 is a fixed contact.
3 is a low resistance fixed contact, 34 is a movable contact plate, and 35 is a fixed contact plate. FIG. 10 shows a contact switchgear disclosed in Japanese Utility Model Publication No. 55-42341, (a) is a perspective view of the contact part, and (b) is a view showing the opened state. In FIG. 10, 41 is a movable contact consisting of an arc and a low resistance contact, 42 is a fixed contact for arc, 43 is a low resistance fixed contact, 44 is a movable contact plate, and 45 is a fixed contact plate. In addition, FIG.
It is a figure which shows the open state of the contact switchgear of Unexamined-Japanese-Patent No. 1-233919. In FIG. 11, 51 is a movable contact for arc and low resistance contact, 52 is a fixed contact for arc, and 53 is a fixed contact for arc.
Is a low resistance fixed contact.
【０００４】これらの接点開閉装置は、閉成動作時には
アーク用接点どうしが先に接触し、開成動作時にはアー
ク用接点どうしが後に開離し、かつ閉成状態では低抵抗
接点どうしが接触するものである。これにより、接点開
閉動作時にアーク用接点がアークを負担し、閉成状態で
は低抵抗接点を通して電流が流れ、温度上昇を防いでい
る。In these contact switching devices, the arc contacts first come into contact with each other during the closing operation, the arc contacts come apart from each other during the opening operation, and the low resistance contacts come into contact with each other in the closed state. is there. As a result, the arc contacts bear the arc when the contacts are opened and closed, and a current flows through the low resistance contacts in the closed state to prevent a temperature rise.
【０００５】[0005]
【発明が解決しようとする課題】上記従来の接点開閉装
置における電磁石の吸引力とばね負荷の整合特性を図１
２に示し、動作特性を図１３に示す。また、図１４は各
部の波形図である。なお、図１２において、縦軸Ｆは電
磁石の吸引力とばね負荷，横軸ｘは接点ストロークであ
り、はセット時の吸引力，はリセット時の吸引力，
はばね負荷を示す。FIG. 1 shows the matching characteristics of the attraction force of the electromagnet and the spring load in the above-mentioned conventional contact switching device.
2 and the operating characteristics are shown in FIG. Further, FIG. 14 is a waveform diagram of each part. In FIG. 12, the vertical axis F is the attraction force and spring load of the electromagnet, the horizontal axis x is the contact stroke, is the attraction force at the time of setting, is the attraction force at the time of reset,
Indicates spring load.
【０００６】図１２からわかるように、ダブル接点機構
にすることで２つのばね荷重と吸引力特性が整合され、
開離動作電圧が決定されるので、ばね荷重のばらつきに
よって動作電圧が大きくばらつくという欠点がある。ま
た、図１２および図１３からわかるように、アーク用接
点および低抵抗接点の投入が同じフレキシャー方式であ
り、アーク用接点が投入されてから低抵抗接点が投入さ
れるまでの変移Δｘ2 をあまり大きくできず、また、電
磁石の可動部材が充分加速してから接点が投入されるた
め、なおさら両接点の投入時間差Δｔ 2 は短くなる。そ
のため、少し時間が長い突入電流が流れた場合、図１４
に示すようなバウンスがアーク用接点に発生すると、低
抵抗接点のバウンスによりアークが発生し、低抵抗接点
が溶着するという欠点がある。As can be seen from FIG. 12, the double contact mechanism
By doing so, the two spring load and suction force characteristics are matched,
Since the opening / closing operation voltage is determined, it is possible to avoid variations in spring load.
Therefore, there is a drawback that the operating voltage greatly varies. Well
Also, as can be seen from FIG. 12 and FIG.
With the same flexure method, the points and low resistance contacts are turned on.
The low resistance contact is turned on after the arc contact is turned on.
Transition until2Cannot be made too large, and
The contact was turned on after the movable member of the magnet was sufficiently accelerated.
Therefore, the time difference Δt between both contacts 2Becomes shorter. So
Therefore, if an inrush current flows for a long time,
When a bounce as shown in Fig.
An arc is generated due to the bounce of the resistance contact, and the low resistance contact
Has the drawback of being welded.
【０００７】また、図１５(a) ，(b) に回路図を示す。
図１５(a) ，(b) に示すように、理論的にアーク用接点
Ｓ1 の接触抵抗ＲA は高いため、アーク用接点Ｓ1 がメ
イク状態にあっても、アーク用接点Ｓ1 の接触抵抗ＲA
による接点間の電圧降下ＶAが低抵抗接点Ｓ2 の最小ア
ーク電圧Ｖmin よりも大きい場合（すなわちＶA ＞Ｖ
min の場合）、図１５(c) に示すように、低抵抗接点Ｓ
2 の投入時に低抵抗接点Ｓ2 のバウンスによりアークが
発生し、低抵抗接点Ｓ2 が溶着するという欠点がある。Circuit diagrams are shown in FIGS. 15 (a) and 15 (b).
As shown in Figs. 15 (a) and 15 (b), theoretically the arc contacts
S1Contact resistance RAIs high, the arc contact S1The
Arc contact S1Contact resistance RA
Voltage drop V between contactsAHas a low resistance contact S2The smallest of
Voltage VminGreater than (ie VA> V
minCase), as shown in FIG. 15 (c), the low resistance contact S
2Low resistance contact S when turning on2The bounce of the arc
Occurs, low resistance contact S2Has the drawback of being welded.
【０００８】なお、ダブル接点機構でない場合に、シン
グル接点のバウンスを低減したとしても、コンデンサ負
荷の突入電流の場合、接点が接触する前に絶縁破壊し、
アークが発生する。しかし、ダブル接点機構の場合、ア
ーク接点が投入した状態での低抵抗接点間の接点間電圧
は小さいので、絶縁破壊によるアークが発生しないこと
になる。また、ダブル接点機構の場合、接点部が大型化
し、コストが高くなるという欠点がある。Even when the bounce of the single contact is reduced when the double contact mechanism is not used, in the case of the inrush current of the capacitor load, dielectric breakdown occurs before the contacts make contact,
An arc occurs. However, in the case of the double contact mechanism, since the inter-contact voltage between the low resistance contacts is small when the arc contact is turned on, the arc due to the dielectric breakdown does not occur. Further, in the case of the double contact mechanism, there is a drawback that the contact portion becomes large and the cost becomes high.
【０００９】この発明の第１の目的は、動作電圧の安定
化を図るとともに、時間の長い突入電流を開閉する場合
などの低抵抗接点の溶着を防止し、かつ、接点閉成状態
において温度上昇を防止できる接点開閉装置を提供する
ことである。さらに、第２の目的は、第１の目的に加
え、小型化・低コスト化の図れる接点開閉装置を提供す
ることである。A first object of the present invention is to stabilize the operating voltage, prevent the low resistance contact from being welded when opening and closing a long-time inrush current, and increase the temperature when the contact is closed. It is to provide a contact switchgear capable of preventing the above. Further, a second object is to provide a contact opening / closing device which can be reduced in size and cost in addition to the first object.
【００１０】[0010]
【課題を解決するための手段】請求項１記載の接点開閉
装置は、耐溶着性の良好なアーク用可動接点およびアー
ク用固定接点からなるアーク用接点と、アーク用可動接
点と電気的に接続された低抵抗可動接点およびアーク用
固定接点と電気的に接続された低抵抗固定接点からなる
低抵抗接点と、閉成動作時にはアーク用可動接点とアー
ク用固定接点が接触した後に低抵抗可動接点と低抵抗固
定接点が接触し、開成動作時には低抵抗可動接点と低抵
抗固定接点が開離した後にアーク用可動接点とアーク用
固定接点が開離するように、アーク用可動接点を駆動す
る第１の駆動手段および低抵抗可動接点を駆動する第２
の駆動手段とを備え、第２の駆動手段が低抵抗接点の中
心軸上を変位し、低抵抗固定接点を固定する端子が剛体
からなるものである。According to a first aspect of the present invention, there is provided a contact switchgear which is electrically connected to an arc contact composed of an arc movable contact and an arc fixed contact having good welding resistance, and the arc movable contact. Low resistance contact consisting of a fixed low resistance contact and a fixed low resistance contact electrically connected to the fixed contact for arc, and a low resistance movable contact after the movable contact for arc and the fixed contact for arc are contacted during closing operation. Drive the arc movable contact so that the arc movable contact and the arc fixed contact are separated after the low resistance movable contact and the low resistance fixed contact are separated during the opening operation. A second driving means for driving the driving means and the low resistance movable contact;
And a second driving means is displaced on the central axis of the low resistance contact, and the terminal for fixing the low resistance fixed contact is made of a rigid body.
【００１１】請求項２記載の接点開閉装置は、耐溶着性
の良好なアーク用可動接点およびアーク用固定接点から
なるアーク用接点と、アーク用可動接点と電気的に接続
された低抵抗固定接点およびアーク用固定接点と電気的
に接続された低抵抗可動接点からなる低抵抗接点と、閉
成動作時にはアーク用可動接点とアーク用固定接点が接
触した後に低抵抗可動接点と低抵抗固定接点が接触し、
開成動作時には低抵抗可動接点と低抵抗固定接点が開離
した後にアーク用可動接点とアーク用固定接点が開離す
るように、アーク用可動接点および低抵抗可動接点を駆
動する駆動手段とを備え、アーク用可動接点と低抵抗固
定接点との間に一体形成したアーク用固定接点と低抵抗
可動接点を挿入し、駆動手段が低抵抗接点の中心軸上を
変位し、低抵抗固定接点を固定する端子が剛体からなる
ものである。According to a second aspect of the present invention, there is provided a contact opening / closing device, wherein the arc contact is composed of a movable contact for arc and a fixed contact for arc having good welding resistance, and a low resistance fixed contact electrically connected to the movable contact for arc. And a low resistance contact consisting of a low resistance movable contact electrically connected to the arc fixed contact and the low resistance movable contact and low resistance fixed contact after the arc movable contact and the arc fixed contact come into contact during the closing operation. Contact,
Equipped with a driving means for driving the movable contact for arc and the movable contact for low resistance so that the movable contact for arc and the fixed contact for arc are separated after the low resistance movable contact and the low resistance fixed contact are separated during the opening operation. , The fixed contact for arc and the low resistance movable contact which are integrally formed between the movable contact for arc and the low resistance fixed contact are inserted, and the drive means is displaced on the central axis of the low resistance contact to fix the low resistance fixed contact. The terminal to be connected is made of a rigid body.
【００１２】[0012]
【作用】請求項１および２記載の構成によれば、駆動手
段として電磁石装置の可動部のカードを用いれば、低抵
抗接点の接点圧は電磁石の保持力で構成されるのでばね
荷重としてはアーク用接点のばね荷重のみになり、シン
グル接点と同様の動作電圧のばらつきにすることができ
る。また、時間の長い大きな突入電流を開閉する．、ア
ーク用接点が投入された後、アーク用接点のＯＴ量分だ
け可動部が変位し低抵抗接点が投入されるので投入時間
差を長くすることができ、接点溶着現象をなくすことが
できる。さらに低抵抗接点は電磁石の保持力で吸引され
るので、ばね係数が非常に大きく（理想的には剛体の衝
突）、接点が弾まず接点バウンスが発生しない。したが
って、アーク用接点の接触抵抗が大きくなり接点間電圧
が高くなったときでも、低抵抗接点のバウンス発生しな
いため、低抵抗接点にアークは発生せず、消耗・溶着な
く安定した接触抵抗を得ることができ、温度上昇を防止
できる。According to the first and second aspects of the present invention, when the card of the movable part of the electromagnet device is used as the driving means, the contact pressure of the low resistance contact point is constituted by the holding force of the electromagnet, so that the spring load is the arc. Only the spring load of the contact is used, and the variation in operating voltage can be made similar to that of the single contact. It also opens and closes large inrush currents that take a long time. After the contact for arc is turned on, the movable portion is displaced by the amount of OT of the contact for arc and the low resistance contact is turned on, so that the difference in the making time can be lengthened and the contact welding phenomenon can be eliminated. Further, since the low resistance contact is attracted by the holding force of the electromagnet, the spring coefficient is very large (ideally a rigid body collision) and the contact does not bounce and contact bounce does not occur. Therefore, even when the contact resistance of the arc contact becomes large and the voltage between the contacts becomes high, the low resistance contact does not bounce, so that no arc is generated at the low resistance contact and stable contact resistance is obtained without wear or welding. The temperature rise can be prevented.
【００１３】さらに請求項２記載の構成によれば、アー
ク用可動接点と低抵抗固定接点との間に一体形成したア
ーク用固定接点と低抵抗可動接点を挿入しているため、
小型化・低コスト化を図ることができる。Further, according to the second aspect of the invention, since the arc fixed contact and the low resistance movable contact which are integrally formed between the arc movable contact and the low resistance fixed contact are inserted,
Miniaturization and cost reduction can be achieved.
【００１４】[0014]
【実施例】この発明の一実施例を図面に基づいて説明す
る。図１はこの発明の第１の実施例の接点開閉装置の接
点部の構成図であり、図２は同接点開閉装置を具体的に
リレーに搭載した平面図である。図１，図２において、
１はアーク用可動接点、２，５は板ばね、３はアーク用
固定接点、４は低抵抗可動接点、６は低抵抗固定接点、
７ａ，７ｂ，８ａ，８ｂは剛体からなる端子、９ａは電
磁石の可動部のアーク接点駆動カード（第１の駆動手
段）、９ｂは低抵抗接点駆動カード（第２の駆動手段）
である。なお、アーク用可動接点１とアーク用固定接点
３が耐溶着性の良好なアーク用接点となり、低抵抗可動
接点４と低抵抗固定接点６が低抵抗接点となる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. 1 is a configuration diagram of a contact portion of a contact opening / closing device according to a first embodiment of the present invention, and FIG. 2 is a plan view of the contact opening / closing device specifically mounted on a relay. 1 and 2,
1 is a movable contact for arc, 2 and 5 are leaf springs, 3 is a fixed contact for arc, 4 is a low resistance movable contact, 6 is a low resistance fixed contact,
7a, 7b, 8a and 8b are terminals made of a rigid body, 9a is an arc contact drive card (first drive means) of the movable part of the electromagnet, and 9b is a low resistance contact drive card (second drive means).
Is. The movable contact 1 for arcs and the fixed contact 3 for arcs serve as arc contacts having good welding resistance, and the low resistance movable contact 4 and the fixed contact 6 for low resistance serve as low resistance contacts.
【００１５】この接点開閉装置は、端子７ａと７ｂが電
気的に接続され、端子８ａと８ｂが電気的に接続されて
いる。端子７ａには板ばね２が固着され、板ばね２の先
端部にアーク用可動接点１がかしめ固着されている。端
子７ｂには板ばね５が固着され、板ばね５の先端部に低
抵抗可動接点４がかしめ固着されている。アーク用固定
接点３は端子８ａに固着され、低抵抗固定接点６は端子
８ｂに固着されている。アーク接点駆動カード９ａはア
ーク用可動接点１と端子７ａの間に位置づけられ板ばね
２を駆動する。低抵抗接点駆動カード９ｂは、低抵抗可
動接点４の接点中心軸上に位置づけられている。In this contact switchgear, terminals 7a and 7b are electrically connected, and terminals 8a and 8b are electrically connected. A leaf spring 2 is fixed to the terminal 7a, and an arc movable contact 1 is fixed to the tip end of the leaf spring 2 by caulking. A leaf spring 5 is fixed to the terminal 7b, and a low resistance movable contact 4 is fixed to the tip end of the leaf spring 5 by caulking. The arc fixed contact 3 is fixed to the terminal 8a, and the low resistance fixed contact 6 is fixed to the terminal 8b. The arc contact drive card 9a is positioned between the arc movable contact 1 and the terminal 7a and drives the leaf spring 2. The low resistance contact drive card 9b is positioned on the contact center axis of the low resistance movable contact 4.
【００１６】図３は双安定電磁石を利用した場合のこの
接点開閉装置の動作原理を示す図である。図３におい
て、電磁石は、鉄心２４の両面を磁極部として、永久磁
石２３を挟む２枚の接極子２１，２２が鉄心２４を挟む
ように接離動作するものである。図３(a) では電磁石の
可動部は初期位置にある。コイルに電流が流れると可動
部が変位し、アーク接点駆動カード９ａが板ばね２を駆
動し、低抵抗接点駆動カード９ｂが低抵抗可動接点４を
駆動する。そして、図３(b) に示すようにアーク用可動
接点１がアーク用固定接点３に接触し、突入電流が流れ
る。その後、アーク接点駆動カード９ａがさらに板ばね
２を押し込み、アーク接点圧が付加され、図３(c) に示
すように低抵抗可動接点４が低抵抗固定接点６に接触
し、電磁石は停止し、電磁石の保持力の分低抵抗接点の
接点圧が付加される。すなわち、電磁石の接極子２１と
鉄心２４の間には隙間ｘa が生じることになる。これ
は、レシジュアルプレート（吸引力の最終端の吸引力の
上昇をカットするために用いる）を付加した場合と同様
である。なお、開成動作時には、低抵抗可動接点４と低
抵抗固定接点６が開離した後にアーク用可動接点１とア
ーク用固定接点３が開離する。FIG. 3 is a diagram showing the operating principle of this contact switching device when a bistable electromagnet is used. In FIG. 3, the electromagnet has two sides of the iron core 24 as magnetic pole portions, and two armatures 21 and 22 sandwiching the permanent magnet 23 perform contact and separation operations so as to sandwich the iron core 24. In Fig. 3 (a), the movable part of the electromagnet is in the initial position. When a current flows through the coil, the movable portion is displaced, the arc contact drive card 9a drives the leaf spring 2, and the low resistance contact drive card 9b drives the low resistance movable contact 4. Then, as shown in FIG. 3 (b), the movable contact 1 for arc contacts the fixed contact 3 for arc, and an inrush current flows. After that, the arc contact drive card 9a further pushes the leaf spring 2 to apply the arc contact pressure, the low resistance movable contact 4 contacts the low resistance fixed contact 6 as shown in FIG. 3 (c), and the electromagnet stops. , The contact pressure of the low resistance contact is added by the holding force of the electromagnet. That is, a gap x a is created between the armature 21 of the electromagnet and the iron core 24. This is the same as the case where the Resiliency Plate (used to cut the rise in the suction force at the final end of the suction force) is added. During the opening operation, the movable contact 4 for arc and the fixed contact 3 for arc are separated after the movable contact 4 for low resistance and the fixed contact 6 for low resistance are separated.
【００１７】図４に電磁石の吸引力とばね負荷の整合特
性を示し、動作特性を図５に示す。なお、図４におい
て、縦軸Ｆは電磁石の吸引力とばね負荷，横軸ｘは接点
ストロークであり、はセット時の吸引力，はリセッ
ト時の吸引力，はばね負荷を示す。図４からわかるよ
うに、整合はシングル接点機構と同様であり、保持力Δ
ｆ1が低抵抗接点の接点圧になる。そして、電磁石の本
来のストロークＳＴ０に対して、実際のストロークＳＴ
１は短くなる。FIG. 4 shows the matching characteristics of the attractive force of the electromagnet and the spring load, and FIG. 5 shows the operating characteristics. In FIG. 4, the vertical axis F is the attraction force and spring load of the electromagnet, the horizontal axis x is the contact stroke, is the attraction force at setting, is the attraction force at reset, and is the spring load. As can be seen from FIG. 4, the alignment is similar to the single contact mechanism and the holding force Δ
f 1 becomes the contact pressure of the low resistance contact. The actual stroke ST0 is different from the actual stroke ST0 of the electromagnet.
1 becomes short.
【００１８】さらに図５からわかるように、アーク用接
点が投入されてからアーク用接点のＯＴ量だけ可動部が
変位した後、低抵抗接点が投入されるので投入時間差Δ
ｔ1を長くすることができる。また、低抵抗接点には電
磁石の保持力が瞬時に付加され接点圧が構成されるの
で、バウンスが発生しないことになる。つまり、低抵抗
接点にはアークが発生しない。Further, as can be seen from FIG. 5, after the arc contact is turned on, the movable portion is displaced by the OT amount of the arc contact, and then the low resistance contact is turned on.
It is possible to lengthen t 1 . Further, since the holding force of the electromagnet is instantly applied to the low resistance contact to form the contact pressure, bounce does not occur. That is, no arc is generated at the low resistance contact.
【００１９】以上のようにこの実施例によれば、第１，
第２の駆動手段として電磁石装置の可動部のカード（９
ａ，９ｂ）を用いてあり、低抵抗接点の接点圧は電磁石
の保持力で構成されるのでばね荷重としてはアーク用接
点のばね荷重のみになり、シングル接点と同様の動作電
圧のばらつきにすることができる。また、時間の長い大
きな突入電流を開閉する際、アーク用接点が投入された
後、アーク用接点のＯＴ量分だけ可動部が変位し低抵抗
接点が投入されるので投入時間差を長くすることがで
き、接点溶着現象をなくすことができる。さらに低抵抗
接点は電磁石の保持力で吸引されるので、ばね係数が非
常に大きく（理想的には剛体の衝突）、接点が弾まず接
点バウンスが発生しない。したがって、アーク用接点の
接触抵抗が大きくなり接点間電圧が高くなったときで
も、低抵抗接点のバウンス発生しないため、低抵抗接点
にアークは発生せず、消耗・溶着なく安定した接触抵抗
を得ることができ、温度上昇を防止できる。As described above, according to this embodiment,
As a second drive means, a card (9
a, 9b) and the contact pressure of the low resistance contact is composed of the holding force of the electromagnet, so the spring load is only the spring load of the contact for arc, and the variation in operating voltage is the same as that of the single contact. be able to. In addition, when opening and closing a large inrush current for a long time, after the arc contact is turned on, the movable part is displaced by the OT amount of the arc contact and the low resistance contact is turned on. Therefore, the contact welding phenomenon can be eliminated. Further, since the low resistance contact is attracted by the holding force of the electromagnet, the spring coefficient is very large (ideally a rigid body collision) and the contact does not bounce and contact bounce does not occur. Therefore, even when the contact resistance of the arc contact becomes large and the voltage between the contacts becomes high, the low resistance contact does not bounce, so that no arc is generated at the low resistance contact and stable contact resistance is obtained without wear or welding. The temperature rise can be prevented.
【００２０】つぎにこの発明の第２の実施例について説
明する。図６はこの発明の第２の実施例の接点開閉装置
の接点部の構成を示し、(a) はその斜視図、(b) はその
平面図である。図７はその部分説明図、図８は同接点開
閉装置を具体的にリレーに搭載した平面図である。図６
〜図８において、１１はアーク用可動接点、１２，１５
は板ばね、１３はアーク用固定接点、１４は低抵抗可動
接点、１６は低抵抗固定接点、１７，１８ａ，１８ｂは
剛体からなる端子、１９は電磁石の可動部の接点駆動カ
ード（駆動手段）である。なお、アーク用可動接点１１
とアーク用固定接点１３が耐溶着性の良好なアーク用接
点となり、低抵抗可動接点１４と低抵抗固定接点１６が
低抵抗接点となる。Next, a second embodiment of the present invention will be described. 6A and 6B show the structure of a contact portion of a contact switchgear according to a second embodiment of the present invention. FIG. 6A is a perspective view thereof, and FIG. 6B is a plan view thereof. FIG. 7 is a partial explanatory view thereof, and FIG. 8 is a plan view in which the contact switchgear is specifically mounted on a relay. Figure 6
In FIG. 8, 11 is a movable contact for arc, and 12, 15
Is a leaf spring, 13 is a fixed contact for arc, 14 is a low resistance movable contact, 16 is a low resistance fixed contact, 17, 18a and 18b are terminals made of a rigid body, 19 is a contact drive card (driving means) for the movable part of the electromagnet Is. The movable contact for arc 11
The arc fixed contact 13 serves as an arc contact having good welding resistance, and the low resistance movable contact 14 and the low resistance fixed contact 16 serve as low resistance contacts.
【００２１】この接点開閉装置は、端子１８ａと１８ｂ
が電気的に接続されている。端子１８ａには板ばね１２
が固着され、板ばね１２の先端部にアーク用可動接点１
１がかしめ固着されている。端子１８ｂに低抵抗固定接
点１６が固着されている。端子１７には板ばね１５が固
着され、板ばね１５の先端部にアーク用固定接点１３と
低抵抗可動接点１４が固着されている。接点駆動カード
１９は、各接点１１，１３，１４，１６と同一軸上に位
置づけられている。なお図７に示すように、アーク用固
定接点１３はＡｇなどの低抵抗接点材１４ａを台金とし
て板ばね１５の先端部にかしめ固着してあり、かしめ固
着後の低抵抗接点材１４ａが低抵抗可動接点１４を構成
する。This contact switching device has terminals 18a and 18b.
Are electrically connected. The leaf spring 12 is attached to the terminal 18a.
Is fixed, and the movable contact for arc 1 is attached to the tip of the leaf spring 12.
1 is caulked and fixed. The low resistance fixed contact 16 is fixed to the terminal 18b. A leaf spring 15 is fixed to the terminal 17, and an arc fixed contact 13 and a low resistance movable contact 14 are fixed to the tip of the leaf spring 15. The contact drive card 19 is positioned on the same axis as the contacts 11, 13, 14, and 16. As shown in FIG. 7, the fixed contact 13 for arc is caulked and fixed to the tip of the leaf spring 15 by using a low resistance contact material 14a such as Ag as a base metal, and the low resistance contact material 14a after caulking and fixation is low. The resistance movable contact 14 is configured.
【００２２】この接点開閉装置では、閉成動作時には、
接点駆動カード１９が板ばね１２を駆動し、アーク用可
動接点１１をアーク用固定接点１３に接触させる。さら
に接点駆動カード１９は板ばね１２，１５を駆動変位さ
せ、低抵抗可動接点１４が低抵抗固定接点１６に接触
し、電磁石は停止し、電磁石の保持力の分低抵抗接点の
接点圧が付加される。なお、開成動作時には、低抵抗可
動接点１４と低抵抗固定接点１６が開離した後にアーク
用可動接点１１とアーク用固定接点１３が開離する。In this contact switching device, during the closing operation,
The contact drive card 19 drives the leaf spring 12 to bring the arc movable contact 11 into contact with the arc fixed contact 13. Further, the contact drive card 19 drives and displaces the leaf springs 12 and 15, the low resistance movable contact 14 contacts the low resistance fixed contact 16, the electromagnet stops, and the contact pressure of the low resistance contact is added by the holding force of the electromagnet. To be done. During the opening operation, the low resistance movable contact 14 and the low resistance fixed contact 16 are separated, and then the arc movable contact 11 and the arc fixed contact 13 are separated.
【００２３】この実施例によれば、第１の実施例と同様
の効果があるとともに、さらに、アーク用可動接点１１
と低抵抗固定接点１６との間に一体形成したアーク用固
定接点１３と低抵抗可動接点１４を挿入しているため、
小型化・低コスト化を図ることができる。According to this embodiment, the same effect as that of the first embodiment is obtained, and further, the movable contact 11 for the arc.
Since the arc fixed contact 13 and the low resistance movable contact 14 which are integrally formed between the low resistance fixed contact 16 and the low resistance fixed contact 16 are inserted,
Miniaturization and cost reduction can be achieved.
【００２４】[0024]
【発明の効果】請求項１および２記載の接点開閉装置に
よれば、駆動手段として電磁石装置の可動部のカードを
用いれば、低抵抗接点の接点圧は電磁石の保持力で構成
されるのでばね荷重としてはアーク用接点のばね荷重の
みになり、シングル接点と同様の動作電圧のばらつきに
することができる。また、時間の長い大きな突入電流を
開閉する際、アーク用接点が投入された後、アーク用接
点のＯＴ量分だけ可動部が変位し低抵抗接点が投入され
るので投入時間差を長くすることができ、接点溶着現象
をなくすことができる。さらに低抵抗接点は電磁石の保
持力で吸引されるので、ばね係数が非常に大きく（理想
的には剛体の衝突）、接点が弾まず接点バウンスが発生
しない。したがって、アーク用接点の接触抵抗が大きく
なり接点間電圧が高くなったときでも、低抵抗接点のバ
ウンス発生しないため、低抵抗接点にアークは発生せ
ず、消耗・溶着なく安定した接触抵抗を得ることがで
き、温度上昇を防止できる。According to the contact opening / closing device according to the first and second aspects of the present invention, when a card of the movable part of the electromagnet device is used as the driving means, the contact pressure of the low resistance contact is constituted by the holding force of the electromagnet. The load is only the spring load of the contact for arc, and it is possible to make the variation of the operating voltage similar to that of the single contact. In addition, when opening and closing a large inrush current for a long time, after the arc contact is turned on, the movable part is displaced by the OT amount of the arc contact and the low resistance contact is turned on. Therefore, the contact welding phenomenon can be eliminated. Further, since the low resistance contact is attracted by the holding force of the electromagnet, the spring coefficient is very large (ideally a rigid body collision) and the contact does not bounce and contact bounce does not occur. Therefore, even when the contact resistance of the arc contact becomes large and the voltage between the contacts becomes high, the low resistance contact does not bounce, so that no arc is generated at the low resistance contact and stable contact resistance is obtained without wear or welding. The temperature rise can be prevented.
【００２５】さらに請求項２記載の接点開閉装置によれ
ば、アーク用可動接点と低抵抗固定接点との間に一体形
成したアーク用固定接点と低抵抗可動接点を挿入してい
るため、小型化・低コスト化を図ることができる。Further, according to the contact opening / closing device of the present invention, the fixed arc contact and the low resistance movable contact, which are integrally formed between the arc movable contact and the low resistance fixed contact, are inserted. -Cost can be reduced.
【図１】この発明の第１の実施例の接点開閉装置の接点
部の構成図。FIG. 1 is a configuration diagram of a contact portion of a contact opening / closing device according to a first embodiment of the present invention.
【図２】第１の実施例の接点開閉装置を具体的にリレー
に搭載した平面図。FIG. 2 is a plan view in which the contact opening / closing device of the first embodiment is specifically mounted on a relay.
【図３】第１の実施例の接点開閉装置の動作原理を示す
図。FIG. 3 is a diagram showing the operating principle of the contact switching device of the first embodiment.
【図４】第１の実施例における電磁石の吸引力とばね負
荷の整合特性図。FIG. 4 is a matching characteristic diagram of the attraction force of the electromagnet and the spring load in the first embodiment.
【図５】第１の実施例における動作特性図。FIG. 5 is an operation characteristic diagram in the first embodiment.
【図６】この発明の第２の実施例の接点開閉装置の接点
部の構成図。FIG. 6 is a configuration diagram of a contact portion of a contact switchgear according to a second embodiment of the present invention.
【図７】第２の実施例の接点開閉装置の部分説明図。FIG. 7 is a partial explanatory view of the contact switching device of the second embodiment.
【図８】第２の実施例の接点開閉装置を具体的にリレー
に搭載した平面図。FIG. 8 is a plan view in which the contact opening / closing device of the second embodiment is specifically mounted on a relay.
【図９】従来例である実公昭５１−２３８６３号公報の
接点開閉装置を示す図。FIG. 9 is a view showing a contact opening / closing device of Japanese Utility Model Publication No. 51-23863 which is a conventional example.
【図１０】従来例である実公昭５５−４２３４１号公報
の接点開閉装置を示す図。FIG. 10 is a view showing a contact opening / closing device of Japanese Utility Model Publication No. 55-42341 which is a conventional example.
【図１１】従来例である特開昭６１−２３３９１９号公
報の接点開閉装置を示す図。FIG. 11 is a view showing a conventional contact opening / closing device disclosed in Japanese Patent Laid-Open No. 61-233919.
【図１２】従来例の接点開閉装置における電磁石の吸引
力とばね負荷の整合特性図。FIG. 12 is a matching characteristic diagram of the attraction force of the electromagnet and the spring load in the conventional contact opening / closing device.
【図１３】従来例における動作特性図。FIG. 13 is an operation characteristic diagram in a conventional example.
【図１４】従来例における各部波形図。FIG. 14 is a waveform chart of each part in the conventional example.
【図１５】従来例における問題点の説明図。FIG. 15 is an explanatory diagram of a problem in the conventional example.
１ アーク用可動接点 ３ アーク用固定接点 ４ 低抵抗可動接点 ６ 低抵抗固定接点 ８ｂ 端子 ９ａ アーク用接点駆動カード（第１の駆動手段） ９ｂ 低抵抗接点駆動カード（第２の駆動手段） １１ アーク用可動接点 １３ アーク用固定接点 １４ 低抵抗可動接点 １６ 低抵抗固定接点 １８ｂ 端子 １９ 接点駆動カード（駆動手段） 1 movable contact for arc 3 fixed contact for arc 4 low resistance movable contact 6 low resistance fixed contact 8b terminal 9a contact drive card for arc (first drive means) 9b low resistance contact drive card (second drive means) 11 arc Movable contact 13 fixed arc contact 14 low resistance movable contact 16 low resistance fixed contact 18b terminal 19 contact drive card (drive means)
Claims (2)
びアーク用固定接点からなるアーク用接点と、 前記アーク用可動接点と電気的に接続された低抵抗可動
接点および前記アーク用固定接点と電気的に接続された
低抵抗固定接点からなる低抵抗接点と、 閉成動作時には前記アーク用可動接点と前記アーク用固
定接点が接触した後に前記低抵抗可動接点と前記低抵抗
固定接点が接触し、開成動作時には前記低抵抗可動接点
と前記低抵抗固定接点が開離した後に前記アーク用可動
接点と前記アーク用固定接点が開離するように、前記ア
ーク用可動接点を駆動する第１の駆動手段および前記低
抵抗可動接点を駆動する第２の駆動手段とを備え、 前記第２の駆動手段が前記低抵抗接点の中心軸上を変位
し、前記低抵抗固定接点を固定する端子が剛体からなる
接点開閉装置。1. An arc contact composed of an arc movable contact and an arc fixed contact having good welding resistance, a low resistance movable contact electrically connected to the arc movable contact, and the arc fixed contact. During the closing operation, the low resistance contact, which is a low resistance fixed contact electrically connected, and the arc movable contact and the arc fixed contact come into contact with each other, and then the low resistance movable contact and the low resistance fixed contact come into contact with each other. A first drive for driving the arc movable contact so that the arc movable contact and the arc fixed contact are separated after the low resistance movable contact and the low resistance fixed contact are separated during the opening operation. Means and a second drive means for driving the low resistance movable contact, wherein the second drive means is displaced on the central axis of the low resistance contact, and the terminal for fixing the low resistance fixed contact is a rigid body. Contact switchgear consisting of.
びアーク用固定接点からなるアーク用接点と、 前記アーク用可動接点と電気的に接続された低抵抗固定
接点および前記アーク用固定接点と電気的に接続された
低抵抗可動接点からなる低抵抗接点と、 閉成動作時には前記アーク用可動接点と前記アーク用固
定接点が接触した後に前記低抵抗可動接点と前記低抵抗
固定接点が接触し、開成動作時には前記低抵抗可動接点
と前記低抵抗固定接点が開離した後に前記アーク用可動
接点と前記アーク用固定接点が開離するように、前記ア
ーク用可動接点および前記低抵抗可動接点を駆動する駆
動手段とを備え、 前記アーク用可動接点と前記低抵抗固定接点との間に一
体形成した前記アーク用固定接点と前記低抵抗可動接点
を挿入し、前記駆動手段が前記低抵抗接点の中心軸上を
変位し、前記低抵抗固定接点を固定する端子が剛体から
なる接点開閉装置。2. An arc contact composed of an arc movable contact and an arc fixed contact having good welding resistance, a low resistance fixed contact electrically connected to the arc movable contact, and the arc fixed contact. During the closing operation, the low resistance contact, which is a low resistance movable contact electrically connected, contacts the arc movable contact and the arc fixed contact, and then the low resistance movable contact contacts the low resistance fixed contact. During the opening operation, the arc movable contact and the low resistance movable contact are arranged so that the arc movable contact and the arc fixed contact are separated after the low resistance movable contact and the low resistance fixed contact are separated. Driving means for driving, wherein the arc fixed contact and the low resistance movable contact integrally formed between the arc movable contact and the low resistance fixed contact are inserted, and the driving means Is a contact opening / closing device in which the terminal for fixing the low resistance fixed contact is made of a rigid body and is displaced on the central axis of the low resistance contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22429892A JPH0668765A (en) | 1992-08-24 | 1992-08-24 | Contact point opening and closing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22429892A JPH0668765A (en) | 1992-08-24 | 1992-08-24 | Contact point opening and closing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0668765A true JPH0668765A (en) | 1994-03-11 |
Family
ID=16811584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22429892A Pending JPH0668765A (en) | 1992-08-24 | 1992-08-24 | Contact point opening and closing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0668765A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010118343A (en) * | 2008-11-15 | 2010-05-27 | Tyco Electronics Austria Gmbh | Relay |
| JP2013097959A (en) * | 2011-10-31 | 2013-05-20 | Panasonic Corp | Polarized electromagnetic relay |
| CN104157490A (en) * | 2014-08-27 | 2014-11-19 | 武汉长海电气科技开发有限公司 | High-voltage direct current contactor contact system |
| JP2015011932A (en) * | 2013-07-01 | 2015-01-19 | 富士通コンポーネント株式会社 | Electromagnetic relay |
-
1992
- 1992-08-24 JP JP22429892A patent/JPH0668765A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010118343A (en) * | 2008-11-15 | 2010-05-27 | Tyco Electronics Austria Gmbh | Relay |
| JP2013097959A (en) * | 2011-10-31 | 2013-05-20 | Panasonic Corp | Polarized electromagnetic relay |
| JP2015011932A (en) * | 2013-07-01 | 2015-01-19 | 富士通コンポーネント株式会社 | Electromagnetic relay |
| CN104157490A (en) * | 2014-08-27 | 2014-11-19 | 武汉长海电气科技开发有限公司 | High-voltage direct current contactor contact system |
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