JP2935279B2 - Contact switching device - Google Patents
Contact switching deviceInfo
- Publication number
- JP2935279B2 JP2935279B2 JP3006586A JP658691A JP2935279B2 JP 2935279 B2 JP2935279 B2 JP 2935279B2 JP 3006586 A JP3006586 A JP 3006586A JP 658691 A JP658691 A JP 658691A JP 2935279 B2 JP2935279 B2 JP 2935279B2
- Authority
- JP
- Japan
- Prior art keywords
- contact
- arc
- resistance
- contacts
- low
- 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.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/541—Auxiliary contact devices
- H01H50/543—Auxiliary switch inserting resistor during closure of contactor
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Contacts (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、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.
【０００２】[0002]
【従来の技術】従来、電磁継電器に用いられる開閉装置
としては、図８に示すように、固定接点板５０に固定接
点５１を固着し、電磁石装置等の可動部材に連結された
駆動部材５２に駆動される可動接点板５３に可動接点５
４を固着している。ところで、コンデンサ負荷やランプ
負荷の様な負荷を開閉する場合には、図９に示すように
大きな突入電流が流れる。図９において、ｔは時間、ｉ
は電流を示す。このような負荷を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等の耐溶着性の良好な材料が用いら
れている。しかしながら、この様な接点材料は、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 switching device used in an electromagnetic relay, as shown in FIG. 8, a fixed contact 51 is fixed to a fixed contact plate 50, and a driving member 52 connected to a movable member such as an electromagnet device is used. The movable contact plate 53 is driven by the movable contact 5
4 is fixed. Incidentally, when switching a load such as a capacitor load or a lamp load, a large inrush current flows as shown in FIG. In FIG. 9, t is time, i
Indicates a current. If the above-mentioned contact switching device is used to open and close such a load, there is a risk of contact welding due to the arc generated by the rush current. Therefore, as a countermeasure, a material having good welding resistance such as tungsten is used as a contact material. Have been. However, since such a contact material has a large resistance value, the temperature rise in the contact closed state increases.
【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、特開昭６１─２３３９１９号公
報、特開昭６２─７１１３７号公報、特開昭６２─７１
１３８号公報に示すような接点開閉装置が提案された。
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、接点接触状態では低抵抗
接点を通して電流が流れ温度上昇を防いでいる。Accordingly, Japanese Patent Application Laid-Open Nos. 61-233919, 62-71137, and 62-71 use an arc contact and a low-resistance contact having good welding resistance.
No. 138 has proposed a contact switching device.
In these contact opening / closing devices, arc contacts come into contact first during a closing operation, arc contacts come apart later during an opening operation, and low-resistance contacts come into contact with each other in a closed state. Accordingly, the arc contact bears the arc during the contact opening / closing operation, and in the contact state, current flows through the low-resistance contact to prevent an increase in temperature.
【０００４】[0004]
【発明が解決しようとする課題】上記した従来の接点開
閉装置にあっては、容量が大きいコンデンサ負荷の場
合、アーク用接点の接触時、接点バウンスにより大きな
エネルギのアークが発生し、アーク用接点、近接してい
る接点ばねおよび低抵抗接点が溶け、開閉する回数が多
くなるに従って開閉できなくなったり、低抵抗接点の接
触抵抗が上昇したりする。つまり、大きな突入電流を開
閉する場合、接点寿命が短くなるという問題点があっ
た。図１０は突入電流発生時の従来の接点回路で、Ｃは
負荷、Ｒ1 はアーク用接点の抵抗、Ｒ0 は配線の抵抗
で、Ｌ0 はそのＬ成分である。In the above-mentioned conventional contact switching device, in the case of a capacitor load having a large capacity, an arc having a large energy is generated due to contact bounce when the contacts for the arc are brought into contact with each other. In addition, the contact spring and the low-resistance contact that are close to each other melt, and as the number of times of opening and closing increases, the opening and closing cannot be performed, or the contact resistance of the low-resistance contact increases. That is, when switching a large inrush current, there is a problem that the contact life is shortened. In conventional contact circuit at 10 inrush current occurs, C is a load, R 1 is the resistance of the arc contact, in R 0 is the resistance of the wiring, L 0 is the L component.
【０００５】したがって、この発明の目的は、大きな負
荷を開閉する場合であっても突入電流を小さくでき、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。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a contact switching device capable of reducing an inrush current even when switching a large load and preventing a rise in temperature in a contact closed state.
【０００６】[0006]
【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接点と低抵抗接点が
接点板にそれぞれ設けられた可動接点ブロックおよび固
定接点ブロックを備え、閉成動作時には前記アーク用接
点どうしが先に接触し、開成動作時には前記アーク用接
点どうしが後に開離し、かつ閉成状態において前記低抵
抗接点どうしが接触するように構成した接点開閉装置に
おいて、両接点ブロックの少なくとも一方の接点板に高
い抵抗率をもつ導体板を固着し、この導体板上にアーク
用接点を固着したことを特徴とするものである。請求項
２記載の接点開閉装置は、対向面に一対の低抵抗接点を
有し前記一対の低抵抗接点の少なくとも一方に貫通孔を
形成した一対の接点板と、前記貫通孔を有する接点板の
前記対向面と反対側に取付けられた高い抵抗率をもつ導
体と、前記貫通孔に遊嵌された耐溶着性の良好なアーク
用接点と、前記導体に取付けられた取付部を有し前記ア
ーク用接点の基端部を保持する保持部を有し前記アーク
用接点の先端が前記低抵抗接点よりも突出した状態で前
記導体に弾性係止する係止部を前記保持部に有する補助
ばねとを備えたものである。According to a first aspect of the present invention, there is provided a contact switching device including a movable contact block and a fixed contact block in which a contact point for an arc having good welding resistance and a low resistance contact are provided on a contact plate, respectively. A contact switching device configured such that the arc contacts come into contact with each other first during the closing operation, the arc contacts are separated later during the opening operation, and the low-resistance contacts contact each other in the closed state. A conductor plate having a high resistivity is fixed to at least one contact plate of both contact blocks, and an arc is formed on the conductor plate.
The contact is fixed . The contact switching device according to claim 2, wherein a pair of contact plates having a pair of low resistance contacts on opposing surfaces and having a through hole formed in at least one of the pair of low resistance contacts, and a contact plate having the through hole. A conductor having a high resistivity attached to the opposite side of the opposing surface, an arcing contact having good welding resistance loosely fitted in the through hole, and an attaching portion attached to the conductor; An auxiliary spring having a retaining portion for retaining a base end portion of the contact for use, the retaining spring having a retaining portion for elastically retaining the conductor with the tip of the arc contact protruding from the low-resistance contact; It is provided with.
【０００７】[0007]
【作用】請求項１記載の接点開閉装置によれば、大容量
のコンデンサ等の非常に大きな負荷を開閉する場合で
も、接点閉成動作時および接点開成動作時の大きな電流
が流れる時には、耐溶着性の良好なアーク用接点から高
い抵抗率を持つ導体へ電流が流れるので、電流値を小さ
く抑えることができ、その結果、発生するアークエネル
ギが小さくなり、接点開閉能力を長寿命化することがで
きる。また、定常電流が流れる閉成状態においては、低
抵抗接点どうしが接触するので、温度上昇を防止でき
る。 とくに高い抵抗率をもつ導体をアーク用接点と接点
板との間に介在しているため、高い抵抗率をもつ抵抗体
を配線により接続するものと比較して、接点構造が簡単
で省スペース化できかつ安価になるとともに、導体の熱
を接点板に伝熱できるので、放熱効果に優れ断線等のト
ラブルもない。 請求項２記載の接点開閉装置によれば、
接点の閉成時には貫通孔を有する低抵抗接点よりも先に
アーク用接点が相手側の接点に接触して導体を通して突
入電流が流れ、また接点の開離時にはアーク用接点が最
後に離れるので、請求項１と同じ作用効果がある。 According to the contact switching device of the first aspect, a large capacity is provided.
When switching very large loads such as capacitors
Large current during contact closing and contact opening
When the current flows, the arc contact with good welding resistance
Current flows through conductors with high resistivity,
Arc energy generated as a result
And the contact opening / closing capacity can be extended.
Wear. In the closed state where a steady current flows,
Resistive contacts come in contact with each other, preventing temperature rise
You. Conductors with particularly high resistivity are used as arc contacts and contacts
Resistor with high resistivity because it is interposed between the plate
Contact structure is simpler than that of connecting by wire
Space saving and low cost, and heat of conductor
Can be transferred to the contact plate, providing excellent heat dissipation
No rubles. According to the contact switching device of claim 2,
When closing the contacts, before the low-resistance contacts with through holes
The arcing contact contacts the mating contact and protrudes through the conductor.
Input current flows, and the arc contacts are
Since it separates later, it has the same operational effect as the first aspect.
【０００８】[0008]
【実施例】この発明の第１の実施例の接点開閉装置を図
１ないし図４に基づいて説明する。この接点開閉装置を
構成する可動接点ブロック１と固定接点ブロック２に
は、それぞれ低抵抗接点３，４とアーク用接点５，６が
備えられている。すなわち、可動接点ブロック１におい
ては、接点板７に低抵抗接点３がかしめ固定され、接点
板７の先端部７ａに高い抵抗率を持つ導体８が固着され
るとともにこの導体８に耐溶着性の良好なアーク用接点
５がかしめ固定されている。また、固定接点ブロック２
においても、可動接点ブロック１と同様に低抵抗接点４
が接点板９に固定され、接点板９の先端部９ａに高い抵
抗率を持つ導体１０を介して耐溶着性の良好なアーク用
接点６がかしめ固定されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A contact switching device according to a first embodiment of the present invention will be described with reference to FIGS. The movable contact block 1 and the fixed contact block 2 constituting the contact switching device are provided with low resistance contacts 3 and 4 and arc contacts 5 and 6, respectively. That is, in the movable contact block 1, the low-resistance contact 3 is swaged and fixed to the contact plate 7, the conductor 8 having a high resistivity is fixed to the tip 7a of the contact plate 7, and the welding resistance Good arc contacts
5 is caulked and fixed. In addition, fixed contact block 2
In the same manner as in the movable contact block 1,
Are fixed to the contact plate 9, and the arc contact 6 having good welding resistance is fixed by caulking to the tip 9 a of the contact plate 9 via a conductor 10 having a high resistivity.
【０００９】つぎに、この接点開閉装置の動作について
説明する。すなわち、可動接点ブロック１の接点板７が
電磁石等の駆動体により加圧されて変位し固定接点ブロ
ック２に接触する接点閉成動作時には、図２に示すよう
に、アーク用接点５，６が先に接触し、突入電流ｉ1 が
流れる。このとき、例えば大容量のコンデンサを開閉す
る場合、大きなエネルギのアークが発生する。しかしな
がら、突入電流ｉ1 は高い抵抗率を持つ導体８，１０を
通るため、突入電流値は小さく抑えられる。つまり、図
４に示すように、接触抵抗Ｒ1 の他に導体８，１０の抵
抗Ｒ2 が直列に接続され、この抵抗Ｒ2 は非常に大きい
ので、突入電流値が非常に小さくなり接点開閉能力を長
寿命化することができる。なお、図４において図１０と
同一部分には同一符号を付した。また、定常電流ｉ2 が
流れる接点閉成状態には、図３に示すように、低抵抗接
点３，４どうしが接触し、温度上昇を防止できる。さら
に、接点閉成動作時にも大きなエネルギのアークが発生
するが、上記導体８，１０を備えたアーク用接点５，６
が後に開離するようにしたので、同様に電流値を小さく
抑えることができる。また、図５に示すように、低抵抗
接点３，４とアーク用接点５，６を上下に設けてもよ
い。なお、導体８，１０は可動接点ブロック１および固
定接点ブロック２の少なくとも一方に設ければよい。Next, the operation of the contact switching device will be described. That is, during a contact closing operation in which the contact plate 7 of the movable contact block 1 is displaced by being pressed by a driving body such as an electromagnet and comes into contact with the fixed contact block 2, as shown in FIG. contacting the above, the inrush current i 1 flows. At this time, for example, when a large-capacity capacitor is opened and closed, an arc having a large energy is generated. However, the rush current i 1 passes through the conductors 8 and 10 having high resistivity, so that the rush current value can be suppressed to a small value. That is, as shown in FIG. 4, the contact resistance resistor R 2 in addition to the conductor 8, 10 of R 1 are connected in series, since the resistance R 2 is very large, the contact switching inrush current becomes very small Capability can be extended. In FIG. 4, the same parts as those in FIG. 10 are denoted by the same reference numerals. Further, in the contact closing state of steady-state current i 2 flows, as shown in FIG. 3, if the low-resistance contact 3 and 4 are in contact, thereby preventing the temperature rise. Further, an arc having a large energy is generated also at the time of the contact closing operation, but the arc contacts 5 and 6 having the conductors 8 and 10 are also provided.
Are separated later, so that the current value can be similarly reduced. Further, as shown in FIG. 5, low resistance contacts 3 and 4 and arc contacts 5 and 6 may be provided above and below. The conductors 8 and 10 may be provided on at least one of the movable contact block 1 and the fixed contact block 2.
【００１０】図６および図７は第２の実施例の接点開閉
装置を示したものである。この場合、可動接点ブロック
１において、低抵抗接点１１を接点板１２に設けた孔部
に対向面側から嵌合し、孔部周辺の接点板１２の対向面
と反対側の面に導体１３を嵌合して一体にかしめ固定し
てある。また、アーク用接点１４は低抵抗接点１１に設
けた貫通孔１５の中に低抵抗接点１１とは遊嵌状態に非
接触で位置づけられ、基端が導体１３に固着された補助
ばね２０にて保持される。このとき、補助ばね２０の負
荷力によって補助ばね２０の先端が導体１３に設けられ
た突起部２１で位置決めされ、アーク用接点１４の先端
は低抵抗接点１１の先端位置よりも突出した位置に保持
される。すなわち、補助ばね２０は、導体１３に取付け
られた取付部２０ａを有し、アーク用接点１４の基端部
を保持する保持部２０ｂを有し、アーク用接点１４の先
端が低抵抗接点１１よりも突出した状態で導体１３に弾
性係止する係止部２０ｃを保持部２０ｂに有する。ま
た、固定接点ブロック２において、接点板１６に設けた
孔部に貫通孔１７を有する低抵抗接点１８を嵌合すると
ともに貫通孔１７にアーク用接点１９を嵌合して一体に
かしめ固定してある。FIGS. 6 and 7 show a contact switching device according to a second embodiment. In this case, the movable contact block 1, a low resistance contact 11 fitted from the side facing the hole provided in the contact plate 12, the opposing surface of the contact plate 12 around the hole
The conductor 13 is fitted on the surface on the side opposite to the above and fixed integrally by caulking. The arc contact 14 is positioned in the through-hole 15 provided in the low-resistance contact 11 in a non-contact manner with the low-resistance contact 11 in a loose-fit state, and is provided by an auxiliary spring 20 having a base end fixed to the conductor 13. Will be retained. At this time, the distal end of the auxiliary spring 20 is positioned by the protrusion 21 provided on the conductor 13 by the load force of the auxiliary spring 20, and the distal end of the arc contact 14 is held at a position protruding from the distal end position of the low resistance contact 11. Is done. That is, the auxiliary spring 20 is attached to the conductor 13.
Base portion of the arc contact 14 having a mounting portion 20a
Having a holding portion 20b for holding the tip of the arc contact 14.
With the end protruding from the low resistance contact 11, the conductor 13
The holding portion 20b has a locking portion 20c for performing sex locking . In the fixed contact block 2, a low-resistance contact 18 having a through hole 17 is fitted into a hole provided in the contact plate 16, and an arc contact 19 is fitted into the through hole 17 and caulked and fixed together. is there.
【００１１】つぎに、この第２の実施例の動作について
説明する。すなわち、第１の実施例と同様にアーク用接
点１４、１９が最初に接触し、突入電流が流れる。この
とき、突入電流は導体１３を通るため、突入電流値は小
さく抑えられる。さらに、接点板１２が変位すると補助
ばね２０が変位し、低抵抗接点１１，１８が接触し、定
常電流が流れる。また、接点開成動作時には、補助ばね
２０の作用によりアーク用接点１４，１９が後に開離
し、接点閉成動作時と同様の効果を奏する。Next, the operation of the second embodiment will be described. That is, as in the first embodiment, the arc contacts 14 and 19 come into contact first, and an inrush current flows. At this time, since the inrush current passes through the conductor 13, the inrush current value can be suppressed to a small value. Further, when the contact plate 12 is displaced, the auxiliary spring 20 is displaced, the low-resistance contacts 11 and 18 are brought into contact, and a steady current flows. Further, at the time of the contact opening operation, the arc contacts 14, 19 are separated later by the action of the auxiliary spring 20, and the same effect as at the time of the contact closing operation is exerted.
【００１２】[0012]
【発明の効果】請求項１記載の接点開閉装置によれば、
大容量のコンデンサ等の非常に大きな負荷を開閉する場
合でも、接点閉成動作時および接点開成動作時の大きな
電流が流れる時には、耐溶着性の良好なアーク用接点か
ら高い抵抗率を持つ導体へ電流が流れるため、電流値を
小さく抑えることができ、その結果、発生するアークエ
ネルギが小さくなり、接点開閉能力を長寿命化すること
ができる。また、定常電流が流れる閉成状態において
は、低抵抗接点どうしが接触するので、温度上昇を防止
できる。とくに高い抵抗率をもつ導体をアーク用接点と
接点板との間に介在しているため、高い抵抗率をもつ抵
抗体を配線により接続するものと比較して、接点構造が
簡単で省スペース化できかつ安価になるとともに、導体
の熱を接点板に伝熱できるので、放熱効果に優れ断線等
のトラブルもない。 請求項２記載の接点開閉装置によれ
ば、接点の閉成時には貫通孔を有する低抵抗接点よりも
先にアーク用接点が相手側の接点に接触して導体を通し
て突入電流が流れ、また接点の開離時にはアーク用接点
が最後に離れるので、請求項１と同じ作用効果がある。 According to the contact switching device of the first aspect ,
Even when switching a very large load such as a large-capacity capacitor, when a large current flows during the contact closing operation and the contact opening operation, the arc contact with good welding resistance can be switched to a conductor with high resistivity. Since the current flows, the current value can be suppressed to a small value. As a result, the generated arc energy decreases, and the contact switching ability can be extended. Further, in a closed state in which a steady current flows, the low-resistance contacts come into contact with each other, so that a rise in temperature can be prevented. In particular, conductors with high resistivity are used as arc contacts.
Since it is interposed between the contact plate and the
The contact structure is more
It is simple, space-saving and inexpensive.
Heat can be transferred to the contact plate, resulting in excellent heat dissipation
No trouble. According to the contact switching device of claim 2.
For example, when closing contacts, they are better than low-resistance contacts with through holes.
First, the arc contact comes in contact with the other
Inrush current flows, and when the contacts are opened, arc contacts
Has the same effect as the first aspect.
【図１】この発明の第１の実施例の接点開閉装置の斜視
図である。FIG. 1 is a perspective view of a contact switching device according to a first embodiment of the present invention.
【図２】接点閉成動作時の初期状態を示す平面図であ
る。FIG. 2 is a plan view showing an initial state at the time of a contact closing operation.
【図３】接点閉成状態を示す平面図である。FIG. 3 is a plan view showing a contact closed state.
【図４】突入電流発生時の接点回路図である。FIG. 4 is a contact circuit diagram when an inrush current occurs.
【図５】図１の変形例を示す斜視図である。FIG. 5 is a perspective view showing a modification of FIG.
【図６】この発明の第２の実施例の接点開閉装置の斜視
図である。FIG. 6 is a perspective view of a contact switching device according to a second embodiment of the present invention.
【図７】図７の断面平面図である。FIG. 7 is a sectional plan view of FIG. 7;
【図８】従来例の接点開閉装置を示す斜視図である。FIG. 8 is a perspective view showing a conventional contact switching device.
【図９】電流波形図である。FIG. 9 is a current waveform diagram.
【図１０】従来の突入電流発生時の接点回路図である。FIG. 10 is a conventional contact circuit diagram when an inrush current occurs.
１ 可動接点ブロック ２ 固定接点ブロック ３，４，１１，１８ 低抵抗接点 ５，６，１４，１９ アーク用接点 ７，９，１２，１６ 接点板 ８，１０，１３ 導体１５ 貫通孔 ２０ 補助ばね ２０ａ 取付部 ２０ｂ 保持部 ２０ｃ 係止部 DESCRIPTION OF SYMBOLS 1 Movable contact block 2 Fixed contact block 3,4,11,18 Low resistance contact 5,6,14,19 Arc contact 7,9,12,16 Contact plate 8,10,13 Conductor 15 Through hole 20 Auxiliary spring 20a Mounting part 20b Holding part 20c Locking part
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭61−173418（ＪＰ，Ａ) 実開 昭62−4037（ＪＰ，Ｕ) 実開 昭61−90120（ＪＰ，Ｕ) 実開 昭62−149107（ＪＰ，Ｕ) ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-173418 (JP, A) JP-A 62-4037 (JP, U) JP-A 61-90120 (JP, U) JP-A 62-37 149107 (JP, U)
Claims (2)
接点が接点板にそれぞれ設けられた可動接点ブロックお
よび固定接点ブロックを備え、閉成動作時には前記アー
ク用接点どうしが先に接触し、開成動作時には前記アー
ク用接点どうしが後に開離し、かつ閉成状態において前
記低抵抗接点どうしが接触するように構成した接点開閉
装置において、 両接点ブロックの少なくとも一方の接点板に高い抵抗率
をもつ導体板を固着し、この導体板上にアーク用接点を
固着したことを特徴とする接点開閉装置。An arc contact and a low-resistance contact having good welding resistance are provided on a contact plate, respectively. A movable contact block and a fixed contact block are provided, and during a closing operation, the arc contacts come into contact with each other first. A contact opening / closing device configured so that the arc contacts are separated later during the opening operation and the low-resistance contacts are in contact with each other in the closed state, wherein a high resistivity is applied to at least one contact plate of both contact blocks. And fix the arc contact on this conductor plate.
A contact switching device characterized by being fixed .
対の低抵抗接点の少なくとも一方に貫通孔を形成した一
対の接点板と、前記貫通孔を有する接点板の前記対向面
と反対側に取付けられた高い抵抗率をもつ導体と、前記
貫通孔に遊嵌された耐溶着性の良好なアーク用接点と、
前記導体に取付けられた取付部を有し前記アーク用接点
の基端部を保持する保持部を有し前記アーク用接点の先
端が前記低抵抗接点よりも突出した状態で前記導体に弾
性係止する係止部を前記保持部に有する補助ばねとを備
えた接点開閉装置。2. A pair of contact plates having a pair of low resistance contacts on opposing surfaces and having a through hole formed in at least one of the pair of low resistance contacts, and opposite to the opposing surface of the contact plate having the through holes. A conductor having a high resistivity attached to the side, and a contact for arc having good welding resistance, which is loosely fitted in the through hole,
An arcing contact is provided on the conductor in a state in which a tip of the arcing contact protrudes from the low-resistance contact and has a holding portion for holding a base end of the arcing contact. A contact opening / closing device comprising: an auxiliary spring having a locking portion provided on the holding portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3006586A JP2935279B2 (en) | 1991-01-23 | 1991-01-23 | Contact switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3006586A JP2935279B2 (en) | 1991-01-23 | 1991-01-23 | Contact switching device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04248213A JPH04248213A (en) | 1992-09-03 |
| JP2935279B2 true JP2935279B2 (en) | 1999-08-16 |
Family
ID=11642435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3006586A Expired - Fee Related JP2935279B2 (en) | 1991-01-23 | 1991-01-23 | Contact switching device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2935279B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1962316A1 (en) * | 2007-02-21 | 2008-08-27 | Good Sky Electric Co., Ltd. | Electromagnetic relay |
| JP5197480B2 (en) * | 2009-05-14 | 2013-05-15 | 株式会社日本自動車部品総合研究所 | Electromagnetic relay |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6190120U (en) * | 1984-11-20 | 1986-06-12 | ||
| JPS61173418A (en) * | 1985-01-25 | 1986-08-05 | 松下電工株式会社 | Contact switchgear |
| JPS624037U (en) * | 1985-06-25 | 1987-01-12 | ||
| JPS62149107U (en) * | 1986-03-13 | 1987-09-21 |
-
1991
- 1991-01-23 JP JP3006586A patent/JP2935279B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04248213A (en) | 1992-09-03 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |