JPS61173418A - Contact switchgear - Google Patents
Contact switchgearInfo
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- JPS61173418A JPS61173418A JP1283385A JP1283385A JPS61173418A JP S61173418 A JPS61173418 A JP S61173418A JP 1283385 A JP1283385 A JP 1283385A JP 1283385 A JP1283385 A JP 1283385A JP S61173418 A JPS61173418 A JP S61173418A
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- contact
- arc
- conductive
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Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 〔技術分野〕 この発明は、接点開閉装置に関するものである。[Detailed description of the invention] 〔Technical field〕 The present invention relates to a contact switching device.
たとえばIA〜30A付近で使用されるリレー。 For example, relays used around IA to 30A.
スイッチ、コンタクタ等の接点開閉装置の性能および寿
命は、投入、しゃ断時に発生するアークによって大きな
影響を受ける。特に突入電流が瞬間的に流れる負荷の開
閉ではバウンスアークにより溶着が発生する。通常接点
には銀(Ag)もしくはAg合金が用いられるが、耐溶
着性を向上するためタングステン(騨)等の高融点材料
とagの焼結合金や、内部酸化法により高温高度もしく
は耐熱性を高めたAg−(:dQ、 Agent、、
Ir1tOs等が用いられる。The performance and lifespan of contact switching devices such as switches and contactors are greatly affected by arcs that occur when they are turned on and off. In particular, welding occurs due to bounce arcs when opening and closing loads where inrush current flows instantaneously. Silver (Ag) or an Ag alloy is usually used for contacts, but to improve welding resistance, we use a sintered alloy of Ag and a high melting point material such as tungsten, or we use an internal oxidation method to improve high temperature or heat resistance. Increased Ag-(:dQ, Agent,,
Ir1tOs etc. are used.
しかし、これらの接点材料はもうとも接触抵抗が安定す
るAgに対して不純物を混入するためその接触抵抗特性
が不安定になり、また温度上昇が問題になる。However, since these contact materials mix impurities into Ag, which already has a stable contact resistance, the contact resistance characteristics become unstable and temperature rise becomes a problem.
また接点の接触面の状態を考えると、これら−。Also, considering the condition of the contact surface of the contact, these -.
Wc、 Sn、 Inもしくはこれらの酸化物はその濃
度が増せば増す程耐溶着性、耐消耗性は一般的に向上す
るがやはり接触抵抗特性は不安定となる。As the concentration of Wc, Sn, In, or their oxides increases, the welding resistance and abrasion resistance generally improve, but the contact resistance characteristics also become unstable.
さらにこれらの接触抵抗は接点圧に関係があり、その変
化は線形ではないにしても弾圧に対して接触抵抗値が反
比例するが、最近の機器の軽薄短小化への技術開発の流
からみると接点圧をいかに小さくするか重要な課題にな
る。なぜなら接圧の増加は機構の各部の摩擦力の増加9
部品の大形化となり、リレー、コンタクタにとっては電
磁石によって駆動させるべきばね負荷のおよびストロー
クの増大になるからである。Furthermore, these contact resistances are related to the contact pressure, and although the change is not linear, the contact resistance value is inversely proportional to the pressure, but considering the recent trend of technological development toward making devices lighter, thinner, and smaller. An important issue is how to reduce the contact pressure. This is because an increase in contact pressure increases the frictional force in each part of the mechanism9.
This is because the parts become larger and, for relays and contactors, the spring load and stroke that must be driven by electromagnets increases.
この発明の目的は、接触抵抗が安定し溶着を低減すると
ともに寿命を向上することができる接点開閉装置を提供
することである。An object of the present invention is to provide a contact switching device that can stabilize contact resistance, reduce welding, and improve lifespan.
この発明は、高融点のアーク接点および低抵抗の導電接
点を溝を介してそれぞれに並設されるとともに前記溝が
前記アーク接点および導電接点の並び方向に互いに位置
ずれするように対向配置された第1および第2の接触子
を備え、少なくとも一方の接触子を駆動することにより
オンまたはオフ動作するとともに、オフ状態と前記導電
接点同志のみが接触するオン状態との間において、前記
オン動作のとき前記アーク接点同志の接触状態から前記
導電接点同志の接触状態へローリングし、前記オフ動作
のとき前記と逆のローリング動作をするように構成した
ことを特徴とするものである。In the present invention, a high-melting-point arc contact and a low-resistance conductive contact are arranged side by side through grooves, and the grooves are arranged opposite to each other so as to be offset from each other in the direction in which the arc contacts and the conductive contacts are arranged. It is provided with a first and a second contact, and operates on or off by driving at least one of the contacts, and between the off state and the on state in which only the conductive contacts are in contact with each other, the on state is controlled. When the arc contacts are in contact with each other, the conductive contacts are in contact with each other and the conductive contacts are in contact with each other, and when the conductive contacts are in contact with each other, the electrically conductive contacts roll in the opposite direction.
アークおよび突入電流はアーク接点が担持し、通電は導
電接点が担持するため接触抵抗が安定するとともに、ロ
ーリングにより溶着を低減でき、しかも従来よりも寿命
を向上することができる。Arc and rush current are carried by the arc contact, and current is carried by the conductive contact, so contact resistance is stabilized, welding can be reduced by rolling, and the service life can be improved compared to conventional products.
また溝が設けられているため消耗粉を溜めることができ
て導電接点側に付着するのを低減できるとともに、溝が
相互にずれているため、導電接点側にアークが発生して
も容易にアーク接点側に転流でき、損傷を少なくできる
。In addition, since the grooves are provided, consumable powder can be collected and it is possible to reduce the adhesion to the conductive contact side, and since the grooves are offset from each other, even if an arc occurs on the conductive contact side, it can be easily arced. The current can be commutated to the contact side, reducing damage.
実施例
この発明の一実施例を第1図ないし第8図に基づいて説
明する。すなわち、第1および第2の接点1.2はそれ
ぞれ接触子3,4の自由端に固定されている。接触子3
.4は基端部が軸5.6により回動自在に支持され、接
触子3は中間部がばね7嘔より支持され、接触子4には
駆動部8が対向している。第1の接点1は接触子3の長
手方向にアーク接点lOが先端側となるように導電接点
9およびアーク接点10が並びその間に幅および深さが
ともに5鶴以上の溝11を形成している。Embodiment An embodiment of the present invention will be described with reference to FIGS. 1 to 8. That is, the first and second contacts 1.2 are fixed to the free ends of the contacts 3, 4, respectively. contact 3
.. 4 is rotatably supported at its proximal end by a shaft 5.6, the contact 3 is supported at its middle by a spring 7, and a drive section 8 is opposed to the contact 4. In the first contact 1, a conductive contact 9 and an arc contact 10 are arranged in the longitudinal direction of the contact 3 so that the arc contact 10 is on the tip side, and a groove 11 with a width and depth of 5 or more is formed between them. There is.
また第2の接点2は先端側に導電接点12が位置するよ
うに接触子4の長手方向に導電接点12とアーク接点1
3が並び、かつその間に前記溝11と同形状の溝14が
形成されている。そして第1の接点1と第2の接点2と
が対向するときは溝11゜14が相互にアーク接点およ
び導電接点の並び方尚にずれる関係に配置される。Further, the second contact 2 is connected to the conductive contact 12 and the arc contact 1 in the longitudinal direction of the contact 4 so that the conductive contact 12 is located on the tip side.
3 are lined up, and a groove 14 having the same shape as the groove 11 is formed between them. When the first contact 1 and the second contact 2 face each other, the grooves 11 and 14 are arranged so that the arrangement of the arc contact and the conductive contact is shifted from each other.
アーク接点10.13は高融点材料たとえばA。The arc contact 10.13 is made of a high melting point material such as A.
−Wc 、 Ag−一等の焼結接点系では−C9−もし
くは−+Wcを10ウェイト%以上含有し、Ag5nO
*、 Ag−Cd0等の酸化物系はでMeO(金属酸化
物を意味する。以下同じ)が5ウ工イト%以上含有され
る。また導電接点9.12は低抵抗材料で構成され、た
とえば焼結接点系では−、 WcもしくはW+Wcが1
5%以下であり、酸化物系においてはMeOが15%以
下であるが、Agのみでもよい。これらアーク接点10
.13みよび導電接点9,12は相互をろう付は等で一
体化してもよいが、リベットや溶接用プロジェクション
が設けられた銅台座等で別個に取付られてもよい。なお
接点は接点材料が焼結材料の場合は溶浸法がまた内部酸
化の場合は選択酸化法で製作される。さらにこれらの接
点9,10゜12.13は各接触子3.4にかしめ、ろ
う付けまたは溶接等によって取付られる。-Wc, Ag-first grade sintered contact system contains -C9- or -+Wc at 10% by weight or more, and Ag5nO
*, An oxide system such as Ag-Cd0 contains MeO (meaning a metal oxide; the same applies hereinafter) in an amount of 5% or more. In addition, the conductive contacts 9.12 are made of a low resistance material, for example, in the case of a sintered contact system, -, Wc or W+Wc is 1.
The content of MeO is 5% or less, and MeO is 15% or less in oxide systems, but only Ag may be used. These arc contacts 10
.. The conductive contacts 9 and 12 may be integrated with each other by brazing or the like, but they may also be separately attached using a copper pedestal provided with rivets or welding projections. Note that the contacts are manufactured by the infiltration method when the contact material is a sintered material, and by the selective oxidation method when the contact material is internal oxidation. Furthermore, these contacts 9, 10° 12.13 are attached to each contact 3.4 by caulking, brazing, welding or the like.
第4図(a)はオフ状態であり、同図(b)は駆動部8
が接触子4を押し下、げた状態で、まずアーク接点10
.13同志が接触する。このとき接触子3,4は平行で
はなくアーク接点13の表面のテーバに応じて投入角度
e1を持つ。またこのときが投入状態であり、負荷によ
っては突入電流が流れることとなる。同図(c)はさら
に接触子4を押し下げた状態で接点相互がローリング(
ころがり接触)して溝11.14がずれた状態に対向し
た後同図(d)のように導電接点9.12が接触しアー
ク接点10.13は離れる。この状態が最終的なオン状
態である。またこのときも接触子3.4は平行ではなく
導電接点12のテーパおよび接点圧を考慮した静止角度
θ2を持つ。オンからオフへの動作は同図(e)から(
g)の動作となるが、前記動作の逆のローリング動作が
行われ、最後にアーク接点10.13が解離する。した
がって、このときアークはアーク接点10.13間で発
生する。なお、第2図は第2の接点2の移動Xに対する
ばね負荷fを示し、aからbは接点が離間している接点
ギャップ(すなわちオフ)で、第5図に示す復帰ばね1
9による。またbからCは投入角度θ、から静止角度θ
2までの移動に伴うものでばね7が加わり、接点圧が付
与される。FIG. 4(a) shows the off state, and FIG. 4(b) shows the drive unit 8.
presses down the contact 4, and in the exposed state, first press the arc contact 10.
.. 13 comrades make contact. At this time, the contacts 3 and 4 are not parallel but have a closing angle e1 according to the taper of the surface of the arc contact 13. Also, at this time, it is a closed state, and depending on the load, an inrush current will flow. In the same figure (c), when the contact 4 is further pushed down, the contacts are rolling (
After the grooves 11.14 come into contact with each other in a deviated state (rolling contact), the conductive contacts 9.12 make contact and the arc contacts 10.13 separate, as shown in FIG. 2(d). This state is the final on state. Also at this time, the contacts 3.4 are not parallel but have a resting angle θ2 taking into consideration the taper of the conductive contact 12 and the contact pressure. The operation from on to off is shown in (e) in the same figure (
In the operation g), a rolling operation is performed which is the reverse of the above operation, and finally the arc contact 10.13 is disengaged. Therefore, at this time an arc occurs between the arc contacts 10.13. In addition, FIG. 2 shows the spring load f with respect to the movement
According to 9. Also, from b to C is the input angle θ, and from the resting angle θ
Due to the movement up to 2, the spring 7 is applied and contact pressure is applied.
第5図はこの接点開閉装置を通用したリレーを示し、1
5はケース、16はリレーコイル、17はコーク、18
はアマチュアで先端に駆動部8が設けられている。19
は前記した復帰ばねである。Figure 5 shows a relay that is compatible with this contact switching device.
5 is a case, 16 is a relay coil, 17 is a cork, 18
is an armature with a drive section 8 provided at its tip. 19
is the return spring described above.
このように構成したため、この接点開閉装置は、オン動
作においてアーク接点10.13がまず接触し、オフ動
作においてもアーク接点10.13が最後に離間するか
ら、突入電流およびアークに対してアーク接点10.1
3が担持し導電接点9゜】2は損傷しないため、接触抵
抗が安定する。しかもローリングにより溶着しにくく、
アーク接点により接点消耗も低減でき寿命を向上するこ
とができる。With this structure, in this contact switching device, the arc contact 10.13 contacts first in the on operation, and the arc contact 10.13 is the last to separate in the off operation, so the arc contact 10.13 is protected against inrush current and arc. 10.1
3 carries the conductive contact 9°] Since the conductive contact 2 is not damaged, the contact resistance is stabilized. Moreover, it is difficult to weld due to rolling,
Arc contacts can also reduce contact wear and improve lifespan.
また、所定の接圧を確保するために必要な接触子4の押
し込み量Xa、 ローリングに使われる押し込み量Xb
、駆動部8が動作しなければならない量(接点位置換算
値)Xcとすると、多量は第6図のような関係となる。In addition, the pushing amount Xa of the contactor 4 necessary to secure the predetermined contact pressure, and the pushing amount Xb used for rolling.
, the amount by which the drive unit 8 must operate (contact position replacement value) Xc, the amount has a relationship as shown in FIG.
またアーク接点10.13と導電接点9,12との間に
溝11.14を設けたため、アーク接点10.13の消
耗粉が溝11.14に溜まり導電接点9.12への飛散
を低減する。Furthermore, since the groove 11.14 is provided between the arc contact 10.13 and the conductive contacts 9, 12, the consumable powder of the arc contact 10.13 accumulates in the groove 11.14, reducing the possibility of scattering to the conductive contact 9.12. .
また、第8図のように、アーク接点の消耗が進行し、同
図(a)から(b)のようにアーク接点10.13の接
触抵抗が増してRになったとすると、第4図(f)の状
態で導電接点11.14間にR×iの電圧が発生し、そ
の電圧が最小アーク電圧以上になると導電接点19.1
4間にアークが発生することとなるが、たとえ発生して
も、第7図(a)から同図(b)の状態にアーク接点1
0゜13が離れていく過程で同図(c)のようにアーク
Aが溝11.14のずれにより導電接点とシーク接点間
に移行し、さらに同図(d)のようにアーク接点10.
13間の距離が導電接点11.14間の距離よりも短い
ため、アークAはアーク接点10.13間に移行し、容
易にアークAの転流が行われ、導電接点11.14の損
傷を少なくすることができる。Furthermore, as shown in Figure 8, if the wear of the arc contact progresses and the contact resistance of the arc contact 10.13 increases to R as shown in Figures (a) to (b), then Figure 4 ( In the state f), a voltage of R×i is generated between the conductive contacts 11.14, and when the voltage exceeds the minimum arc voltage, the conductive contacts 19.1
However, even if an arc occurs, the arc contact 1 will be in the state shown in Fig. 7(a) to Fig. 7(b).
In the process of moving away from each other, the arc A moves between the conductive contact and the seek contact due to the deviation of the groove 11.14 as shown in FIG.
13 is shorter than the distance between the conductive contacts 11.14, the arc A will transfer between the arc contacts 10.13, and the commutation of the arc A will easily occur, causing damage to the conductive contacts 11.14. It can be reduced.
さらにアーク接点10.13の接触面積を2倍以上導電
接点11.14よりも大きくしたことにより、接点消耗
が接点の表面から高さ方向に生じる以上体積もさること
ながら表面積を増大することも効果がある。この実施例
においては、アーク接点10.13の接触面積を大きく
することによって接点消耗余裕量を大きくすることがで
き、したがって最終的に導電接点11.14とアーク接
点10.13とが同時に開閉されるようになるまでの期
間(開閉回数)を延長することができる。Furthermore, by making the contact area of the arc contact 10.13 more than twice as large as that of the conductive contact 11.14, it is effective to increase the surface area as well as the volume since contact wear occurs in the height direction from the contact surface. There is. In this embodiment, the contact wear margin can be increased by increasing the contact area of the arc contact 10.13, so that the conductive contact 11.14 and the arc contact 10.13 are finally opened and closed at the same time. It is possible to extend the period (number of opening/closing times) until the
一方導電接点11.14が小さくなることによってAg
の使用量が少なくなるため、コストダウンになる。さら
に導電接点11.14の表面積が小さくなることにより
、アーク接点10.13側で発生する消耗粉が導電接点
11.14に付着する確率が減り、結果的に接触抵抗の
安定化に効果がある。On the other hand, by reducing the size of the conductive contact 11.14, Ag
Since the amount used is reduced, costs are reduced. Furthermore, by reducing the surface area of the conductive contact 11.14, the probability that consumable powder generated on the arc contact 10.13 side will adhere to the conductive contact 11.14 is reduced, which is effective in stabilizing the contact resistance. .
この実施例の変形例として、接触子3.4は板ばねで形
成して前記ばね7.19を省略してもよい。また前記接
触子3.4は常開式であったが、常閉式でもよく、その
他接触子機構は接離動作とローリング動作とができる構
成であればよく、前記実施例に限定されない。As a variant of this embodiment, the contact 3.4 may be formed by a leaf spring and the spring 7.19 may be omitted. Although the contacts 3.4 are of the normally open type, they may be of the normally closed type, and the contact mechanism is not limited to the above embodiments as long as it is capable of approaching/separating operations and rolling operations.
この発明によれば、各接触子にアーク接点および導電接
点を設け、オンおよびオフの動作の間にローリング動作
をともなってつねにオン時にはア−多接点同志が先に接
触し、オフ時にはアーク接点同志が後から離間するとと
もに、アーク接点と導電接点間に溝を形成し善導が相互
にずれる関係に対向したことにより、接点の寿命を向上
し、溶着、消耗を少なくでき、接触安定性を確保するこ
とができる。しかも、溝により消耗粉の導電接点への付
着を低減できるとともに導電接点間にアークが発生して
も、溝のずれにより容易にアーク接点側へ転流すること
ができるという効果がある。According to this invention, each contact is provided with an arc contact and a conductive contact, and a rolling action is performed between on and off operations, so that when on, the arc contacts contact each other first, and when off, the arc contacts contact each other first. At the same time, a groove is formed between the arc contact and the conductive contact, and the good conductor is opposed to the other in a mutually shifted relationship, which improves the life of the contact, reduces welding and wear, and ensures contact stability. be able to. Moreover, the grooves have the effect of reducing the adhesion of consumable powder to the conductive contacts, and even if an arc occurs between the conductive contacts, the flow can easily be commutated to the arc contact side due to the deviation of the grooves.
第1図はこの発明の一実施例の動作状態の側面図、第2
図はその第2の接点のストローク対ばねj+
み量のベクトル図、第7図はアークの転流の説明図、第
8図は導電接点間に最小アーク発生電圧の発生する状態
を説明する回路図である。
3.4・・・接触子、9.12・・・導電接点、10゜
第1図
第2図
第3図
第5図
第6図
− 誓 。
℃ ^
!Φへ
aコ
ト ・−
手続補正書(眺
昭和60年03月29日FIG. 1 is a side view of an embodiment of the present invention in an operating state, and FIG.
The figure is a vector diagram of the stroke of the second contact versus the amount of spring j+, Figure 7 is an illustration of arc commutation, and Figure 8 is a circuit explaining the state in which the minimum arc generation voltage occurs between conductive contacts. It is a diagram. 3.4... Contact, 9.12... Conductive contact, 10° Figure 1 Figure 2 Figure 3 Figure 5 Figure 6 - Oath. ℃ ^! A comment to Φ - Procedural amendment (viewed March 29, 1985)
Claims (2)
を介してそれぞれに並設されるとともに前記溝が前記ア
ーク接点および導電接点の並び方向に互いに位置ずれす
るように対向配置された第1および第2の接触子を備え
、少なくとも一方の接触子を駆動することによりオンま
たはオフ動作するとともに、オフ状態と前記導電接点同
志のみが接触するオン状態との間において、前記オン動
作のとき前記アーク接点同志の接触状態から前記導電接
点同志の接触状態へローリングし、前記オフ動作のとき
前記と逆のローリング動作をするように構成したことを
特徴とする接点開閉装置。(1) A high-melting-point arc contact and a low-resistance conductive contact are arranged side by side through a groove, and the grooves are arranged opposite to each other so that the positions of the arc contact and the conductive contact are shifted from each other in the direction in which the arc contact and the conductive contact are lined up. The contactor comprises a first and a second contact, and is turned on or off by driving at least one of the contacts, and at the time of the on operation, between the off state and the on state in which only the conductive contacts are in contact with each other. A contact opening/closing device characterized in that the contact opening/closing device is configured to roll from a contact state of the arc contacts to a contact state of the conductive contacts, and perform a rolling action opposite to the above during the off operation.
きい特許請求の範囲第(1)項記載の接点開閉装置。(2) The contact switching device according to claim 1, wherein the arc contact has a larger surface area than the conductive contact.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1283385A JPS61173418A (en) | 1985-01-25 | 1985-01-25 | Contact switchgear |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1283385A JPS61173418A (en) | 1985-01-25 | 1985-01-25 | Contact switchgear |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61173418A true JPS61173418A (en) | 1986-08-05 |
Family
ID=11816373
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1283385A Pending JPS61173418A (en) | 1985-01-25 | 1985-01-25 | Contact switchgear |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61173418A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS647738U (en) * | 1987-07-02 | 1989-01-17 | ||
JPH02256112A (en) * | 1989-03-28 | 1990-10-16 | Matsushita Electric Works Ltd | Contacting apparatus |
JPH04248213A (en) * | 1991-01-23 | 1992-09-03 | Matsushita Electric Works Ltd | Contact breaker |
CN102610447A (en) * | 2012-03-27 | 2012-07-25 | 镇江的可电器科技有限公司 | Relay |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5526614A (en) * | 1978-08-11 | 1980-02-26 | Nitto Electric Ind Co Ltd | Manufacturing of carrier tape for ic |
-
1985
- 1985-01-25 JP JP1283385A patent/JPS61173418A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5526614A (en) * | 1978-08-11 | 1980-02-26 | Nitto Electric Ind Co Ltd | Manufacturing of carrier tape for ic |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS647738U (en) * | 1987-07-02 | 1989-01-17 | ||
JPH02256112A (en) * | 1989-03-28 | 1990-10-16 | Matsushita Electric Works Ltd | Contacting apparatus |
JPH04248213A (en) * | 1991-01-23 | 1992-09-03 | Matsushita Electric Works Ltd | Contact breaker |
CN102610447A (en) * | 2012-03-27 | 2012-07-25 | 镇江的可电器科技有限公司 | Relay |
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