JPH0389419A - Contact device - Google Patents
Contact deviceInfo
- Publication number
- JPH0389419A JPH0389419A JP22695289A JP22695289A JPH0389419A JP H0389419 A JPH0389419 A JP H0389419A JP 22695289 A JP22695289 A JP 22695289A JP 22695289 A JP22695289 A JP 22695289A JP H0389419 A JPH0389419 A JP H0389419A
- Authority
- JP
- Japan
- Prior art keywords
- plate
- contact
- arc
- shaped magnetic
- magnetic plate
- 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.)
- Granted
Links
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 abstract description 8
- 238000001816 cooling Methods 0.000 abstract description 3
- 230000003292 diminished effect Effects 0.000 abstract 1
- 230000004888 barrier function Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000007704 transition Effects 0.000 description 5
- 239000004020 conductor Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 101100537937 Caenorhabditis elegans arc-1 gene Proteins 0.000 description 3
- 239000012212 insulator Substances 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910001316 Ag alloy Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は回路遮断器或いは開閉器等に使用される接点装
置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a contact device used in a circuit breaker, a switch, or the like.
この種の接点装置は、例えば回路遮断器に使用した場合
、短絡電流や過負荷電流等の過電流が検出されると、固
定接点と可動接点とを開離し、回路遮断を行う。しかし
ながら、過電流が流れ続けた状態で接点開極を行うと、
その開離した接点間にアークが発生し、そのアークを断
ち切らない限り、回路遮断が行えない。When this type of contact device is used, for example, in a circuit breaker, when an overcurrent such as a short circuit current or an overload current is detected, the fixed contact and the movable contact are opened and the circuit is broken. However, if the contact is opened while overcurrent continues to flow,
An arc occurs between the opened contacts, and the circuit cannot be interrupted unless the arc is broken.
そこで、このアークを消弧遮断させるものに、第１の手
段として、馬蹄形磁性板を空間を設けて積層したグリッ
ド装置を装備して、アークを複数の磁性板にて分割し、
アーク電圧を高めると同時にアークを冷却させ、迅速に
アークを消滅させるものがある。Therefore, as a first means for extinguishing and interrupting this arc, a grid device in which horseshoe-shaped magnetic plates are stacked with spaces provided is equipped, and the arc is divided by a plurality of magnetic plates.
There are some that increase the arc voltage and cool the arc at the same time, extinguishing the arc quickly.
また、第２の手段として、アークが接触しないよう絶縁
物により包囲されたコ字型磁性板を装備して、自己のア
ークによる磁気駆動力により、アークを引き延ばしてア
ーク電圧を高め、アークを消滅させるものがある。In addition, as a second method, a U-shaped magnetic plate surrounded by an insulator is installed to prevent the arc from coming into contact with the arc, and the magnetic driving force of the own arc stretches the arc, increases the arc voltage, and extinguishes the arc. There is something that makes me
しかしながら、第１の手段であるグリッド装置を装備す
るものにあっては、その構成上、馬蹄形磁性板を空間を
設けて積層する関係やアークを磁性板に移行させ易くす
る関係から、配置空間を大きく必要としていた。However, in the case of a device equipped with a grid device, which is the first means, due to its configuration, the placement space is limited because the horseshoe-shaped magnetic plates are stacked with a space provided, and the arc is easily transferred to the magnetic plates. It was greatly needed.
また、第２の手段である絶縁物により包囲されたコ字型
磁性板を装備するものにあっては、アークを引き延ばす
ための空間が大きく必要としていた。Furthermore, the second method, which is equipped with a U-shaped magnetic plate surrounded by an insulator, requires a large space for extending the arc.
したがって、これらのグリッド装置や絶縁物により包囲
されたコ字型磁性板を装備するものにあっては、配置空
間が十分に確保できない場合、消弧能力の減少が余儀な
くされ、有効なアーク消弧遮断を行うことが難しくなっ
てた。Therefore, for these grid devices or those equipped with a U-shaped magnetic plate surrounded by insulators, if sufficient installation space cannot be secured, the arc extinguishing capacity will be reduced, making it impossible to effectively extinguish arcs. It was becoming difficult to block out.
これらの配置空間が十分に確保できない場合には、第３
の手段として、固定接点板に固着されたコ字型磁性板を
装備して、自己のアークによる磁気駆動力により、アー
クを引き延ばしてアーク電圧を高め、且つコ字型磁性板
にアークを移行させて冷却し、アークを消滅させるもの
がある。If there is not enough space for these, please use the third
As a means of this, a U-shaped magnetic plate is fixed to the fixed contact plate, and the magnetic driving force of the own arc stretches the arc to increase the arc voltage, and the arc is transferred to the U-shaped magnetic plate. There are some that cool the arc and extinguish the arc.
このものは、アークに対し、冷却作用及び引き延ばし作
用の両件用が関係して、接点装置の配置空間が小さい場
合に、迅速なアーク消弧を行うことが可能となる。This device has both a cooling effect and an elongating effect on the arc, and can quickly extinguish the arc when the space for arranging the contact device is small.
しかしながら、第３の手段である固定接点板に固着され
たコ字型磁性板を装備するものにあっては、コ字型磁性
板は固定接点板と同電位である関係から、開極時にコ字
型磁性板と可動接点板との空間距離を十分に確保する必
要があり、アーク消弧遮断に対して相反する問題があっ
た。However, in the third method, which is equipped with a U-shaped magnetic plate fixed to a fixed contact plate, the U-shaped magnetic plate has the same potential as the fixed contact plate, so when the contact is opened, the It is necessary to ensure a sufficient spatial distance between the letter-shaped magnetic plate and the movable contact plate, which poses a conflicting problem for arc extinguishing and interruption.
すなわち、コ字型磁性板と可動接点板との空間距離を十
分に確保するならば、コ字型磁性板が小さくなってアー
クの消弧能力が小さくなってしまい、また反対に、アー
クの消弧能力を十分に確保するならば、コ字型磁性板が
大きくなり、コ字型磁性板と可動接点板との空間距離が
小さくなっていた。In other words, if a sufficient space distance is secured between the U-shaped magnetic plate and the movable contact plate, the U-shaped magnetic plate will become smaller and its arc extinguishing ability will be reduced; If sufficient arc capacity was to be ensured, the U-shaped magnetic plate would have to be larger, and the spatial distance between the U-shaped magnetic plate and the movable contact plate would have become smaller.
本発明は上記事由に鑑みてなしたもので、その目的とす
るところは、開極時の空間距離及びアークの消弧能力を
確保して、配置空間が小さい場合に有効な回路遮断が実
現できる接点装置の提供にある。The present invention has been made in view of the above reasons, and its purpose is to ensure the spatial distance and arc extinguishing ability when the contacts are opened, and to realize effective circuit breaking even when the installation space is small. Our goal is to provide contact devices.
かかる課題を解決するため、請求項（１）記載の接点装
置は、可動接点板の開閉動作に伴って可動接点が通過す
るコ字型磁性板を固定接点板の固定接点の装着面上に空
間を設けて装備し、この空間及びコ字型磁性板と可動接
点板若しくは可動接点との空間で固定接点と可動接点と
の間に生じたアークを分割させている。In order to solve this problem, the contact device according to claim (1) includes a U-shaped magnetic plate through which the movable contact passes when the movable contact plate opens and closes, and a space above the mounting surface of the fixed contact of the fixed contact plate. is provided and equipped, and the arc generated between the fixed contact and the movable contact is divided in this space and the space between the U-shaped magnetic plate and the movable contact plate or the movable contact.
さらに、請求項（２）記載の接点装置は、請求項（１）
記載のものに、固定接点板及びコ字型磁性板の少なくと
も一方に、コ字型磁性板と固定接点板との空間を、近接
させる突起を形成している。Furthermore, the contact device according to claim (2) is the contact device according to claim (1).
In the described device, a projection is formed on at least one of the fixed contact plate and the U-shaped magnetic plate to bring the space between the U-shaped magnetic plate and the fixed contact plate closer together.
しかも、請求項（３）記載の接点装置は、請求項（１）
記載のものに、コ字型磁性板の両側片の対向する面に、
絶縁コーティングを施している。Moreover, the contact device according to claim (3) is the contact device according to claim (1).
In addition to what is described, on the opposite sides of both sides of the U-shaped magnetic plate,
Has an insulating coating.
請求項（１）記載の接点装置は、開極時にコ字型磁性板
と可動接点又は可動接点板との空間に、コ字型磁性板と
固定接点板との空間が加算されて、開極距離が大きくな
り、またコ字型磁性板により発生したアークを自己の磁
気駆動力により引き延ばすと共にアークを冷却し、併せ
てアークの分割を生じさせてアーク電圧を高めて、アー
クの消弧能力を向上させることが可能となる。In the contact device according to claim (1), when opening, the space between the U-shaped magnetic plate and the movable contact or the movable contact plate is added to the space between the U-shaped magnetic plate and the fixed contact plate, and the contact is opened. The distance increases, and the arc generated by the U-shaped magnetic plate is extended by its own magnetic driving force, and the arc is cooled. At the same time, the arc is split, increasing the arc voltage, and increasing the arc extinguishing ability. It becomes possible to improve the performance.
さらに、請求項（２）記載の接点装置は、さらに固定接
点と可動接点との間に発生したアークがコ字型磁性板に
接触した時点で、突起により固定接点板及びコ字型磁性
板の空間へのアークの移行を促進させることができ、固
定接点のアークによる消耗を少なくできる。Furthermore, in the contact device according to claim (2), when the arc generated between the fixed contact and the movable contact contacts the U-shaped magnetic plate, the protrusion causes the fixed contact plate and the U-shaped magnetic plate to It is possible to promote the migration of the arc into space, and it is possible to reduce the wear and tear of the fixed contacts due to the arc.
しかも、請求項（３）記載の接点装置は、さらにアーク
が引き延ばされる前にコ字型磁性板の側片に移行するこ
とがなく、アークの引き延ばし作用を確保できる。Moreover, in the contact device according to claim (3), the arc does not move to the side piece of the U-shaped magnetic plate before being further extended, and the arc extending action can be ensured.
この発明の一実施例の接点装置を、図面第１図乃至第４
図に掲げる回路遮断器に基づいて説明する。A contact device according to an embodiment of the present invention is shown in Figures 1 to 4 of the drawings.
The explanation will be based on the circuit breaker shown in the figure.
この回路遮断器の構成は、既に出願人が提案した特願昭
６３−７３７０８号のものと接点装置１を除いて路間−
であり、その全体の構成を第２図に基づき簡単に説明す
ると、この回路遮断器は、器体２の両側に各極毎に端子
装置３を装備すると共に、この端子装置３間を各極毎に
電気的に接続した過負荷電流或いは短絡電流等の過電流
を検出する過電流検出装置４及び接点装置１と、器体２
上面より突出した操作ハンドル５ａの操作に連動して接
点装置１を開閉駆動すると共に接点装置ｔ１の閉極時に
過電流検出装置４に応動して接点装置１を強制開極する
各極共通に連動させる開閉機構部５とを器体２に収納し
ている。The configuration of this circuit breaker is the same as that of Japanese Patent Application No. 63-73708 proposed by the applicant, except for the contact device 1.
The overall structure of the circuit breaker will be briefly explained based on FIG. An overcurrent detection device 4 and a contact device 1 that detect overcurrent such as overload current or short circuit current, which are electrically connected to each other, and a device body 2
The contact device 1 is driven to open and close in conjunction with the operation of the operating handle 5a protruding from the top surface, and the contact device 1 is forcibly opened in response to the overcurrent detection device 4 when the contact device t1 is closed. An opening/closing mechanism section 5 is housed in the container body 2.
しかして、上述した本発明の接点装置１は、以下の構成
からなる：
すなわち、固定接点板６は、例えば銅或いは銅合金の如
き導電材料で構成され、端子装置３の端子ネジ３ａを螺
合するネジ孔６ａを形成した端子片６ｂと、例えば銀或
いは銀合金の如き固定接点板６よりも耐アーク性の高い
導電材料で構成された固定接点７を固着した接点片６ｃ
と、端子片６ｂ及び接点片６ｃを結合する垂直片６ｄと
を略Ｚ型に折曲して構成されている。Thus, the contact device 1 of the present invention described above has the following configuration: That is, the fixed contact plate 6 is made of a conductive material such as copper or copper alloy, and the terminal screw 3a of the terminal device 3 is screwed into the fixed contact plate 6. A terminal piece 6b having a screw hole 6a formed therein, and a contact piece 6c having a fixed contact 7 made of a conductive material having higher arc resistance than the fixed contact plate 6, such as silver or silver alloy, fixed thereto.
and a vertical piece 6d that connects the terminal piece 6b and the contact piece 6c are bent into a substantially Z shape.
この固定接点板６は、器体２の両側配設の隔壁（図面で
は片側のみ図示）に形成した第１の縦溝２ａに垂直片６
ｄの両側の側縁片６ｅを嵌め込み、端子片６ｂを器体の
隔壁間に設けた端子座２ｂに、接点片６ｃを器体２の底
壁に設けた接点座２ｃに載置させて器体２に装着される
。This fixed contact plate 6 has vertical pieces 6 formed in first longitudinal grooves 2a formed in partition walls (only one side is shown in the drawing) disposed on both sides of the container body 2.
Fit the side edge pieces 6e on both sides of d, place the terminal piece 6b on the terminal seat 2b provided between the partition walls of the container body, and place the contact piece 6c on the contact seat 2c provided on the bottom wall of the container body 2. It is attached to the body 2.
さらに、固定接点板６１７）接点片６ｃには、固定接点
７の両側位置に、固定接点７の装着面上に突出した突起
６ｆが形成され、ま′た接点片６ｃの固定接点７の装着
面に、垂直片６ｄ側に開口８ａのＵ字型絶縁板８を装備
している。Further, the fixed contact plate 617) the contact piece 6c is provided with protrusions 6f protruding from the mounting surface of the fixed contact 7 on both sides of the fixed contact 7, and also on the mounting surface of the fixed contact 7 of the contact piece 6c. A U-shaped insulating plate 8 with an opening 8a is provided on the vertical piece 6d side.
この固定接点板６の突起６ｆは、絶縁板８に形成された
孔８ｂに挿通することにより、絶縁板８を固定接点板６
に固定すると共に、突起６ｆの先端を絶縁板８より露見
させている。The protrusion 6f of the fixed contact plate 6 is inserted into the hole 8b formed in the insulating plate 8, so that the insulating plate 8 can be inserted into the fixed contact plate 6.
The tip of the protrusion 6f is exposed from the insulating plate 8.
このＵ字型絶縁板８の開口８ａ底縁に、固定接点７を位
置させて、固定接点７の特に角部或いは辺部分の消耗を
減少させて固定接点７の消耗を少なくしている。The fixed contact 7 is located at the bottom edge of the opening 8a of the U-shaped insulating plate 8, thereby reducing the wear of the fixed contact 7, particularly at the corner or side portions.
しかも、固定接点板６の垂直片６ｄには、弾性を有した
絶縁物製排気バリア９と、上部に排気バリア９で閉塞さ
れる排気孔１０ａを形成した絶縁物製排気板１０とを、
接点片６Ｃの固定接点７の装着面上に並設している。Furthermore, the vertical piece 6d of the fixed contact plate 6 is provided with an elastic exhaust barrier 9 made of an insulating material, and an exhaust plate 10 made of an insulating material with an exhaust hole 10a formed in the upper part thereof to be closed by the exhaust barrier 9.
They are arranged in parallel on the mounting surface of the fixed contact 7 of the contact piece 6C.
この排気バリア９には、略中央に引掛片９ａを形成し、
さらに排気板１０には、略中央に引掛孔ｆｏｂを、下部
に固定用孔１０ｃを形成すると共に、上部両側に当接片
１０ｄを形成している。This exhaust barrier 9 has a hook piece 9a formed approximately in the center,
Furthermore, the exhaust plate 10 is provided with a hook hole fob approximately in the center, a fixing hole 10c in the lower part, and contact pieces 10d on both sides of the upper part.
この排気板１０の当接片１０ｄを、第１の縦溝２ａの上
側壁に当接させ、且つ器体２の結合により排気板ｌＯを
上方より押え込んで器体２に装着すると共に、排気バリ
ア９の引掛片９ａを排気板１０の引掛孔１０ｂに係合し
て、器体２に装着された排気板１０に排気バリア９を装
着する。The abutment piece 10d of the exhaust plate 10 is brought into contact with the upper wall of the first vertical groove 2a, and the exhaust plate 10 is pressed down from above by the connection of the container body 2 to be attached to the container body 2, and the exhaust plate 10 is attached to the container body 2. The hooking piece 9a of the barrier 9 is engaged with the hooking hole 10b of the exhaust plate 10, and the exhaust barrier 9 is attached to the exhaust plate 10 attached to the vessel body 2.
さらに、排気板１０に、接点片６Ｃの固定接点７の装着
面上で、コ字型磁性板１１を固定している。Further, a U-shaped magnetic plate 11 is fixed to the exhaust plate 10 on the mounting surface of the fixed contact 7 of the contact piece 6C.
このコ字型磁性板１１は、嵌込突起１１ａを形成した基
片１１ｂの両側を折曲して両側片１１ｃを形成すること
によりコ字型を威し、嵌込突起１１ａを排気板１０の固
定用孔１０ｃに圧入することにより、排気板１０に固定
される。このコ字型磁性板１１の嵌込突起１１ａの圧入
先端は、排気バリア９により、固定接点板６より電気的
な絶縁が施される。This U-shaped magnetic plate 11 has a U-shape by bending both sides of a base piece 11b on which a fitting protrusion 11a is formed to form both side pieces 11c. It is fixed to the exhaust plate 10 by being press-fitted into the fixing hole 10c. The press-fitted end of the fitting protrusion 11a of this U-shaped magnetic plate 11 is electrically insulated from the fixed contact plate 6 by the exhaust barrier 9.
また、コ字型磁性板１１は、固定接点板６より空間Ｌ１
を設けて装備され、且つコ字型磁性板１１のコ字型で囲
まれた部分が固定接点７に位置し、両側片１１ｃの下辺
が各々絶縁板８の孔８ｂを挿通した固定接点板６の突起
６ｆ先端に対向する。In addition, the U-shaped magnetic plate 11 has a space L1 larger than the fixed contact plate 6.
The fixed contact plate 6 is equipped with a U-shaped magnetic plate 11, and the part surrounded by the U-shape is located at the fixed contact 7, and the lower sides of both side pieces 11c are inserted into the holes 8b of the insulating plate 8. It faces the tip of the protrusion 6f.
しかも、接点片６ｃの先端には、絶縁板８の先端に近接
若しくは当接させて、Ｕ字型を威すセパレータ１２を、
器体２に形成した第２の縦溝２ｄに両側辺を上方より嵌
め込んで垂直方向に装備し、このセパレータ１２のＵ字
開口１２ａに可動接点板１３を介在させている。Moreover, at the tip of the contact piece 6c, a separator 12 having a U-shape is placed close to or in contact with the tip of the insulating plate 8.
Both sides are fitted into second longitudinal grooves 2d formed in the vessel body 2 from above and installed vertically, and a movable contact plate 13 is interposed in the U-shaped opening 12a of the separator 12.
この可動接点板１３は、例えば銅或いは銅合金の如き導
電材料で構成され、先端下面に接点取付座１３ａを形成
している。The movable contact plate 13 is made of a conductive material such as copper or copper alloy, and has a contact mounting seat 13a formed on the lower surface of its tip.
この接点取付座１３ａには、例えば銀或いは銀合金の如
き可動接点板１３よりも耐アーク性の高い導電材料で構
成された可動接点１４が固着され、固定接点７と対向す
る。A movable contact 14 made of a conductive material having higher arc resistance than the movable contact plate 13, such as silver or silver alloy, is fixed to the contact mounting seat 13a, and faces the fixed contact 7.
また、可動接点板１３には、略中央に枢支軸１３ｂを、
他端にばね受はビン１３ｃを設けると共に、異常電流検
出装置４への接続用編組線１３ｄが接続されている。The movable contact plate 13 also has a pivot shaft 13b approximately in the center.
At the other end, the spring receiver is provided with a pin 13c, and a braided wire 13d for connection to the abnormal current detection device 4 is connected.
この可動接点板１３は、枢支軸１３ｂを開閉機構部５に
作用されて回転軸部１５ａを中心に回転する各極連動用
絶縁物製クロスバ−１５に保持され、縮設ばね１６によ
り回転付勢されている。この縮設ばね１６の作用は、通
常開閉では可動接点板１３を反時計回りに付勢して接点
７．１４接触時の接点圧力を確保すると共に、過電流発
生時には電磁反発力で反転して可動接点板１３を時計回
りに付勢し接点７．１４の開極距離を確保する。This movable contact plate 13 is held by an insulating crossbar 15 for interlocking each pole, which rotates around a rotating shaft part 15a under the action of a pivot shaft 13b and an opening/closing mechanism part 5, and is rotated by a compression spring 16. Forced. The action of the compression spring 16 is to bias the movable contact plate 13 counterclockwise during normal opening and closing to ensure contact pressure when the contacts 7 and 14 are in contact, and to reverse the action due to electromagnetic repulsion when an overcurrent occurs. The movable contact plate 13 is biased clockwise to ensure the opening distance of the contacts 7.14.
しかして、この可動接点板１３は、クロスパー１５の回
転軸部１５ａを中心とした回転に伴い開閉動作を行い、
この可動接点板１３の開閉動作に伴って、可動接点１４
が、固定接点板６の接点片６ｃに対して略垂直方向に移
動し、コ字型磁性板１１を通過し、電気的開閉を行う。Therefore, this movable contact plate 13 performs opening and closing operations as the crossbar 15 rotates around the rotating shaft portion 15a.
As the movable contact plate 13 opens and closes, the movable contact 14
moves in a direction substantially perpendicular to the contact piece 6c of the fixed contact plate 6, passes through the U-shaped magnetic plate 11, and performs electrical switching.
また、開極状態に於けるコ字型磁性板１１から可動接点
板１３若しくは可動接点１４までの空間Ｌ２と、コ字型
磁性板１１と固定接点板６の接点片６Ｃまでの空間Ｌ１
との和が、アークの再点弧を防止し且つ消弧遮断可能な
空間以上になるように設定されると共に、空間Ｌ１を固
定接点７と可動接点１４との間に発生したアークが移行
し易く且つアーク電圧（特に陰極降下電圧）が確保出来
る程度の短い距離に設定される。Also, a space L2 from the U-shaped magnetic plate 11 to the movable contact plate 13 or the movable contact 14 in the open state, and a space L1 from the U-shaped magnetic plate 11 to the contact piece 6C of the fixed contact plate 6.
The space L1 is set such that the sum of the arcs is larger than the space that can prevent the arc from being re-ignited and extinguish it. The distance is set to be short enough to easily ensure arc voltage (especially cathode fall voltage).
例えば、交流電圧２２０Ｖ、遮断電流５ｋＡの場合、空
間Ｌ１と空間Ｌ２との和の距離を５ｍｍ以上必要とする
が、このうち、空間Ｌ１側を略１〜１．５閣とすると有
効なアーク消弧遮断が可能であった。For example, in the case of an AC voltage of 220 V and a breaking current of 5 kA, the sum of the distances between space L1 and space L2 must be 5 mm or more, but if the distance on the space L1 side is about 1 to 1.5 mm, effective arc extinguishing can be achieved. Arc interruption was possible.
次に、この接点装置１のアーク消弧動作について説明す
る。Next, the arc extinguishing operation of this contact device 1 will be explained.
接点７、工４が閉極した第４図（ａ）の如き状態にあっ
て、接点７．１４間に過電流が流れると、過電流による
電磁反発力で可動接点ｖｉ１３が縮設ばね１６との関係
で反転し、固定接点７から可動接点１４が開離すると同
時に接点７．１４間にアークＩが発生する。When the contacts 7 and 4 are in the closed state as shown in FIG. 4(a), and an overcurrent flows between the contacts 7 and 14, the electromagnetic repulsive force caused by the overcurrent causes the movable contact vi13 to connect with the contraction spring 16. When the movable contact 14 opens and separates from the fixed contact 7, an arc I is generated between the contacts 7 and 14.
この発生したアークｌはコ字型磁性板１１により引き延
され、また、第４図（ｂ）の如き、電気的に空間距離の
短いコ字型磁性板１１に移行する。The generated arc 1 is extended by the U-shaped magnetic plate 11, and then transferred to the U-shaped magnetic plate 11 having an electrically short spatial distance, as shown in FIG. 4(b).
このコ字型磁性板１１へのアーク■の移行は、固定接点
板６の突起６ｆ及びコ字型磁性板１１の両側片１１ｃの
下辺間と、コ字型磁性板１１の両側片１１ｃの対向面及
び可動接点板１３若しくは可動接点１４間で発生する。The arc ■ moves to the U-shaped magnetic plate 11 between the protrusion 6f of the fixed contact plate 6 and the lower sides of both side pieces 11c of the U-shaped magnetic plate 11, and between the opposing sides of both side pieces 11c of the U-shaped magnetic plate 11. This occurs between the surface and the movable contact plate 13 or the movable contact 14.
このアークＩの移行に伴って、アーク■が分割されてア
ーク電圧の上昇を招き、且つコ字型磁性板１１によりア
ーク■が冷却される。As the arc I moves, the arc (2) is divided, causing an increase in arc voltage, and the arc (2) is cooled by the U-shaped magnetic plate 11.
さらに、過電流検出装置４に駆動に起因して開閉機構部
７の開極動作に伴いクロスパー１５が回転を始め、可動
接点板２６の開極を進行させるに伴って、コ字型磁性板
１１の両側片１１ｃを介して発生していたアークＩが、
コ字型磁性板１１による自己の磁気駆動力により、コ字
型磁性板１１の基片１１ｂ側に移行を始める。Further, due to the drive of the overcurrent detection device 4, the crossbar 15 begins to rotate with the opening operation of the opening/closing mechanism section 7, and as the movable contact plate 26 advances to open, the U-shaped magnetic plate 11 The arc I that was generated via the both side pieces 11c of
Due to its own magnetic driving force by the U-shaped magnetic plate 11, it begins to move toward the base piece 11b side of the U-shaped magnetic plate 11.
この移行に伴って、固定接点板６の突起６ｆ及びコ字型
磁性板１１の両側片１１ｃの下辺間に発生していたアー
クは、先ず、Ｕ字型絶縁板８の開口８ａを通して固定接
点板６の接点片６ｃ及びコ字型磁性板１１の両側片１１
ｃの下辺間に移行すると共に、続いて、第４図（ｃ）の
如く、アークＩは、固定接点板６の接点片６ｃ及びコ字
型磁性板１１の基片１１ｂの下辺間と、コ字型磁性板１
１の基片１１ｂの上辺及び可動接点板１３若しくは可動
接点１４間で発生する。Along with this transition, the arc that was generated between the protrusion 6f of the fixed contact plate 6 and the lower sides of both sides 11c of the U-shaped magnetic plate 11 first passes through the opening 8a of the U-shaped insulating plate 8 and reaches the fixed contact plate. 6 contact piece 6c and both side pieces 11 of the U-shaped magnetic plate 11
As shown in FIG. 4(c), the arc I moves between the lower sides of the contact piece 6c of the fixed contact plate 6 and the base piece 11b of the U-shaped magnetic plate 11. Letter-shaped magnetic plate 1
This occurs between the upper side of the base piece 11b and the movable contact plate 13 or the movable contact 14.
さらに、第４図（ｃ）の如く、クロスパー１５の開極回
転に伴い、可動接点板１３が跳上り防止片５ｂに当接し
て、元の反時計回り方向の状態に反転すると共に、アー
クＩは、コ字型磁性板１１による引き延ばし作用及び冷
却作用並びにアークの分割により次第に消滅し、第４図
（ｄ）の如き開極状態となる。Furthermore, as shown in FIG. 4(c), with the opening rotation of the crossbar 15, the movable contact plate 13 comes into contact with the jump prevention piece 5b and is reversed to its original counterclockwise state, and the arc I gradually disappears due to the stretching and cooling effects of the U-shaped magnetic plate 11 and the splitting of the arc, resulting in an open state as shown in FIG. 4(d).
また、この接点空間で発生したアークガスは、そのガス
圧により排気バリア９を外部方向に押し曲げ、排気板１
０の排気孔１０ａを通じて外部に排出される。Further, the arc gas generated in this contact space pushes and bends the exhaust barrier 9 outward due to its gas pressure, and the exhaust plate 1
It is exhausted to the outside through the exhaust hole 10a of 0.
尚、上述した接点装置１のアーク消弧動作は、可動接点
板１３が反転動作する状態で述べたが、接点７．１４間
に流れる電流の大きさによっては可動接点板１３が反転
することなく、上述の如きアーク■が接点７．１４間に
流れることもある。この場合も上述と同様、接点７．１
４間に発生したアークｌは、コ字型磁性板１１へと移行
して、アーク■を消弧することとなる。The arc extinguishing operation of the contact device 1 described above has been described with the movable contact plate 13 inverted, but depending on the magnitude of the current flowing between the contacts 7 and 14, the movable contact plate 13 may not be inverted. , an arc (2) as described above may flow between the contacts 7.14. In this case as well, contact 7.1
The arc 1 generated during the period 4 moves to the U-shaped magnetic plate 11, and the arc 1 is extinguished.
さらに、他の実施例として掲げた図面第５図に基づき説
明すると、上述した一実施例と異なる構成は、絶縁板８
を無くしたものである。Furthermore, to explain based on FIG. 5 shown as another embodiment, the structure different from the above-mentioned embodiment is that the insulating plate 8
It is the one that has been eliminated.
この構成によるならば、固定接点板６の突起６ｆ及びコ
字型磁性板１１の両側片１１ｃ間に発生するアークを、
スムーズに固定接点板６の接点片６ｃ及びコ字型磁性仮
１１の基片１１ｂに移行させ易くなる。With this configuration, the arc generated between the protrusion 6f of the fixed contact plate 6 and the both side pieces 11c of the U-shaped magnetic plate 11 can be
This facilitates smooth transition to the contact piece 6c of the fixed contact plate 6 and the base piece 11b of the U-shaped magnetic temporary 11.
しかも、他の実施例として掲げた図面第６図に基づき説
明すると、上述した一実施例と異なる構成は、コ字型磁
性体１１の両側片１１ｃの対向する面ｌｉｄに、絶縁コ
ーティングを施したものである。Furthermore, when explaining based on FIG. 6 of the drawings shown as another embodiment, the configuration different from the one embodiment described above is that an insulating coating is applied to the facing surfaces lid of both side pieces 11c of the U-shaped magnetic body 11. It is something.
尚、最良、の構成として、両側片１１ｃの対向する面ｌ
ｉｄの他に、対向する面ｌｉｄに隣合う上面ｌｉｅ及び
対向する面ｌｉｄに隣合う先端面１１ｆをも、絶縁コー
ティングを施している。In addition, as the best configuration, the opposing surfaces l of both side pieces 11c
In addition to id, the upper surface lie adjacent to the opposing surface lid and the tip surface 11f adjacent to the opposing surface lid are also coated with an insulating coating.
この構成によるならば、接点７．１４開極の時に発生し
たアークがコ字型磁性板エエに移行する場合に、可動接
点板若くは可動接点及びコ字型磁性板ｌ１間に発生する
アークが、コ字型磁性板１１の両側片１１ｃを対象とす
るものでなく、コ字型磁性板１１の基片１１ｂとするこ
とにより、アークの引き延ばし作用が確保されて消弧能
力の向上を図れるものとなる。According to this configuration, when the arc generated when contact 7.14 is opened moves to the U-shaped magnetic plate AE, the arc generated between the movable contact plate or between the movable contact and the U-shaped magnetic plate 11 is By using the base piece 11b of the U-shaped magnetic plate 11 instead of the two side pieces 11c of the U-shaped magnetic plate 11, the arc stretching action is ensured and the arc extinguishing ability can be improved. becomes.
上述の実施例では、固定接点板６に突起６ｆを形成し、
アークの移行を行い易くしたが、勿論、コ字型磁性板１
１にも形成してもよく、また必要に応じて突起６ｆを無
くしてもよい。In the above embodiment, the protrusion 6f is formed on the fixed contact plate 6,
Although the arc transition was made easier, of course, the U-shaped magnetic plate 1
1, or the projection 6f may be omitted if necessary.
また、上述の実施例では、可動接点板１３をクロスパー
１５に装備して可動接点１４の開閉をさせるものとした
が、可動接点板自体を直接回転開閉するものでもよいし
、また可動接点板１３は回転による接点開閉のみならず
、上下移動による接点開閉するものでもよい。Further, in the above embodiment, the movable contact plate 13 is mounted on the crossbar 15 to open and close the movable contact 14, but the movable contact plate itself may be directly rotated to open and close, or the movable contact plate 13 The contacts may be opened and closed not only by rotation but also by vertical movement.
さらに、上述の実施例では、回路遮断器を掲げたが、電
磁接触器、開閉器等にも適用が可能である。Further, although the above-described embodiments have focused on circuit breakers, the present invention can also be applied to electromagnetic contactors, switches, etc.
本発明の接点装置は上記の如く構成したので、以下のよ
うな効果を奏する。Since the contact device of the present invention is configured as described above, it has the following effects.
すなわち、請求項（１）記載の接点装置は、可動接点板
の開閉動作に伴って可動接点が通過するコ字型磁性板を
固定接点板の固定接点の装着面上に空間を設けて装備し
、この空間及びコ字型磁性板と可動接点板若しくは可動
接点との空間で固定接点と可動接点との間に生じたアー
クを分割させたので、開極時にコ字型磁性板と可動接点
又は可動接点板との空間に、コ字型磁性板と固定接点板
との空間が加算されて、開極距離が大きくなり、またコ
字型磁性板により発生したアークを自己の磁気駆動力に
より引き延ばすと共にアークを冷却し、併せてアークの
分割を生じさせてアーク電圧を高めて、アークの消弧能
力を向上させることが可能となり、接点装置の空間が小
さい場合に有効な回路遮断が実現できる。That is, the contact device according to claim (1) is equipped with a U-shaped magnetic plate through which the movable contact passes as the movable contact plate opens and closes, with a space provided on the mounting surface of the fixed contact of the fixed contact plate. Since the arc generated between the fixed contact and the movable contact is divided in this space and the space between the U-shaped magnetic plate and the movable contact plate or the movable contact, the arc generated between the fixed contact and the movable contact is split between the U-shaped magnetic plate and the movable contact plate or the movable contact at the time of opening. The space between the U-shaped magnetic plate and the fixed contact plate is added to the space between the movable contact plate and the opening distance increases, and the arc generated by the U-shaped magnetic plate is extended by its own magnetic driving force. At the same time, the arc is cooled, the arc is split, the arc voltage is increased, and the arc extinguishing ability is improved, and effective circuit breaking can be realized when the space of the contact device is small.
さらに、請求項（２）記載の接点装置は、請求項（１）
記載のものに、固定接点板及びコ字型磁性板の少なくと
も一方に、コ字型磁性板と固定接点板との空間を、近接
させる突起を形成したので、固定接点と可動接点との間
に発生したアークがコ字型磁性板に接触した時点で、突
起により固定接点板及びコ字型磁性板の空間へのアーク
の移行を促進させることができ、固定接点のアークによ
る消耗を少なくできる。Furthermore, the contact device according to claim (2) is the contact device according to claim (1).
In addition to the above, a projection is formed on at least one of the fixed contact plate and the U-shaped magnetic plate to bring the space between the U-shaped magnetic plate and the fixed contact plate closer together, so that there is no space between the fixed contact and the movable contact. When the generated arc contacts the U-shaped magnetic plate, the protrusions can promote the transition of the arc to the space between the fixed contact plate and the U-shaped magnetic plate, reducing wear and tear on the fixed contacts due to the arc.
しかも、請求項（３）記載の接点装置は、請求項（１）
記載のものに、コ字型磁性板の両側片の対向する面に、
絶縁コーティングを施したので、アークが引き延ばされ
る前にコ字型磁性板の側片に移行することがなく、アー
クの引き延ばし作用を確保できる。Moreover, the contact device according to claim (3) is the contact device according to claim (1).
In addition to what is described, on the opposite sides of both sides of the U-shaped magnetic plate,
Since the insulating coating is applied, the arc does not migrate to the side pieces of the U-shaped magnetic plate before being stretched, and the arc stretching action can be ensured.
第１図は、本発明の一実施例の要部の斜視図、第２図は
、第１図を適用した断面正面図、第３図は、第１図の分
解斜視図、
第４図（ａ）乃至（ｄ）は、第１図の閉極から開極への
移行状態を示す要部断面正面図、
第５図は、本発明の他の実施例を示す斜視図、第６図は
、本発明の別の実施例を示す斜視図である。
１−接点装置、６・−固定接点板、６ｆ−突起、７・・
・固定接点、１１・−コ字型磁性板、ｌｌｃ・−両側片
、１３−・−可動接点板、１４−・可動接点。FIG. 1 is a perspective view of essential parts of an embodiment of the present invention, FIG. 2 is a sectional front view to which FIG. 1 is applied, FIG. 3 is an exploded perspective view of FIG. a) to (d) are main part sectional front views showing the state of transition from closed to open in FIG. 1, FIG. 5 is a perspective view showing another embodiment of the present invention, and FIG. , is a perspective view showing another embodiment of the present invention. 1-Contact device, 6.-Fixed contact plate, 6f-Protrusion, 7.
- Fixed contact, 11 - U-shaped magnetic plate, llc - both side pieces, 13 - Movable contact plate, 14 - Movable contact.
Claims (3)
着した固定接点に接離して電気的開閉する接点装置に於
いて、前記可動接点板の開閉動作に伴って前記可動接点
が通過するコ字型磁性板を前記固定接点板の前記固定接
点の装着面上に空間を設けて装備し、この空間及び前記
コ字型磁性板と前記可動接点板若しくは可動接点との空
間で前記固定接点と可動接点との間に生じたアークを分
割することを特徴とする接点装置。(1) In a contact device that electrically opens and closes a movable contact mounted on a movable contact plate by contacting and separating it from a fixed contact mounted on a fixed contact plate, the movable contact passes as the movable contact plate opens and closes. A U-shaped magnetic plate is provided with a space above the mounting surface of the fixed contact of the fixed contact plate, and the fixed contact A contact device characterized by dividing an arc generated between a movable contact and a movable contact.
、前記コ字型磁性板と前記固定接点板との空間を、近接
させる突起を形成したことを特徴とする請求項（１）の
接点装置。(2) A projection according to claim (1), characterized in that at least one of the fixed contact plate and the U-shaped magnetic plate is formed with a protrusion that brings the space between the U-shaped magnetic plate and the fixed contact plate closer to each other. Contact device.
ティングを施したことを特徴とする請求項（１）の接点
装置。(3) The contact device according to claim (1), wherein an insulating coating is applied to opposing surfaces of both sides of the U-shaped magnetic plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1226952A JP2734677B2 (en) | 1989-08-31 | 1989-08-31 | Contact device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1226952A JP2734677B2 (en) | 1989-08-31 | 1989-08-31 | Contact device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0389419A true JPH0389419A (en) | 1991-04-15 |
| JP2734677B2 JP2734677B2 (en) | 1998-04-02 |
Family
ID=16853191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1226952A Expired - Lifetime JP2734677B2 (en) | 1989-08-31 | 1989-08-31 | Contact device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2734677B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108022814A (en) * | 2017-12-01 | 2018-05-11 | 江苏华强自动化科技有限公司 | A kind of miniature circuit breaker arc quenching system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5987714A (en) * | 1982-11-10 | 1984-05-21 | 三菱電機株式会社 | Switch |
| JPS6381712A (en) * | 1986-09-25 | 1988-04-12 | 松下電工株式会社 | Contactor |
| JPS63102136A (en) * | 1986-06-25 | 1988-05-07 | 松下電工株式会社 | Contactor |
-
1989
- 1989-08-31 JP JP1226952A patent/JP2734677B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5987714A (en) * | 1982-11-10 | 1984-05-21 | 三菱電機株式会社 | Switch |
| JPS63102136A (en) * | 1986-06-25 | 1988-05-07 | 松下電工株式会社 | Contactor |
| JPS6381712A (en) * | 1986-09-25 | 1988-04-12 | 松下電工株式会社 | Contactor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2734677B2 (en) | 1998-04-02 |
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