JPH02256112A - Contacting apparatus - Google Patents
Contacting apparatusInfo
- Publication number
- JPH02256112A JPH02256112A JP7727689A JP7727689A JPH02256112A JP H02256112 A JPH02256112 A JP H02256112A JP 7727689 A JP7727689 A JP 7727689A JP 7727689 A JP7727689 A JP 7727689A JP H02256112 A JPH02256112 A JP H02256112A
- Authority
- JP
- Japan
- Prior art keywords
- contact
- movable contact
- electrode plate
- plate
- 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.)
- Granted
Links
- 238000000926 separation method Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 5
- 239000004020 conductor Substances 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000004888 barrier function Effects 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000012212 insulator Substances 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
- 238000005219 brazing Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
- H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
- H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
- H01H77/102—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by special mounting of contact arm, allowing blow-off movement
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Breakers (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、回路遮断器や電磁接触器等の電気開閉器に使
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 an electrical switch such as a circuit breaker or an electromagnetic contactor.
この種の接点装置は使用される電気開閉器において、例
えば短絡電流や過負荷電流等の過電流状態で接点を強制
的に開離し、回路遮断を行うことがある。This type of contact device may forcibly open the contacts and interrupt the circuit in an overcurrent state such as a short circuit current or an overload current in an electrical switch used in this type of contact device.
この過電流状態で接点を開極した場合、開離した接点間
にアーク電流が発生し、アーク電流を断ち切らない限り
回路遮断が行えないことがある。If the contacts are opened in this overcurrent state, an arc current will occur between the opened contacts, and the circuit may not be interrupted unless the arc current is cut off.
そこで、消弧グリッドや磁気ヨーク等を用いてアーク電
流の引延し及び絞込みにより、アーク電圧を高め、迅速
にアーク電流を消滅させて回路遮断する構成が採用され
ている。Therefore, a configuration has been adopted in which the arc voltage is increased by extending and narrowing the arc current using an arc extinguishing grid, a magnetic yoke, etc., and the arc current is quickly extinguished to interrupt the circuit.
しかしながら、消弧グリッドや磁気ヨーク等を用いるに
は、それらの十分な配置空間が必要となり、それらの配
置空間が十分に確保できない場合には、消弧グリッドや
磁気ヨーク等の消弧能力の減少が余儀なくされて迅速な
アーク消弧が行うことが難しくなり、場合によってはア
ーク電流が長時間接点間に存在する恐れがある。However, in order to use arc-extinguishing grids, magnetic yokes, etc., sufficient space is required for their arrangement, and if sufficient space cannot be secured for them, the arc-extinguishing ability of the arc-extinguishing grids, magnetic yokes, etc. will be reduced. This makes it difficult to quickly extinguish the arc, and in some cases, the arc current may remain between the contacts for a long time.
この状態は、大きなアーク電圧を存在させつつアーク電
流が流れ続けることから、接点間での熱エネルギー増大
を招き、この熱エネルギーにより接点溶融や接点装置周
辺の絶縁不良等を発生させる問題が生じる。In this state, arc current continues to flow while a large arc voltage is present, leading to an increase in thermal energy between the contacts, and this thermal energy causes problems such as melting of the contacts and poor insulation around the contact device.
したがって、上記の如き十分な空間が確保できない場合
でも確実な回路遮断を行う手段として、第４図乃至第６
図に示す如き、回路遮断器が提案された。Therefore, even when sufficient space cannot be secured as described above, as a means to ensure circuit breakage, Figures 4 to 6 are used.
A circuit breaker as shown in the figure was proposed.
このものの接点装置１を除く回路遮断器の構成は、特願
昭６３−７３７０８号に記載のものと同等で、器体２の
両側に電源側端子装置３及び負荷側端子装置４を各極毎
に装備し、この電源側端子装置３側に配置された各極毎
の接点装置１と、この接点装置１に流れる短絡電流或い
は過負荷電流等の過電流を検出する負荷側端子装置４側
に装備された各極毎の過電流検出装置５と、器体２の上
面より突出させた操作ハンドル６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１が閉極状態の時
に過電流検出装置５に応動して接点装置１を強制的に開
極する各極連動駆動させる開閉機構部７とを収納してい
る。The structure of this circuit breaker except for the contact device 1 is the same as that described in Japanese Patent Application No. 63-73708, and a power supply side terminal device 3 and a load side terminal device 4 are installed on both sides of the device body 2 for each pole. A contact device 1 for each pole is installed on the power supply side terminal device 3 side, and a load side terminal device 4 side that detects overcurrent such as short circuit current or overload current flowing through this contact device 1. The contact device 1 is opened and closed in conjunction with the operation of the equipped overcurrent detection device 5 for each pole and the operation handle 6 protruding from the top surface of the device body 2, and detects overcurrent when the contact device 1 is in the closed state. It houses an opening/closing mechanism section 7 that forcibly opens the contact device 1 in response to the current detection device 5 and drives each pole in conjunction with each other.
また、この接点装置１は、−側片に電源側端子装置３を
装備する例えば銅或いは銅合金の如き導電材料で構成さ
れた固定接点板８に、固定接点板８よりも耐アーク性の
高い例えば銀或いは銀合金の如き導電材料で構成された
固定接点９を固着すると共に固定接点９のみ突出させて
表面に絶縁板１０を被せ固定接点９の消耗を少なくして
いる。Further, this contact device 1 has a fixed contact plate 8 made of a conductive material such as copper or copper alloy, which is equipped with a power supply side terminal device 3 on the minus side piece, and has a higher arc resistance than the fixed contact plate 8. For example, a fixed contact 9 made of a conductive material such as silver or a silver alloy is fixed, and only the fixed contact 9 is made to protrude, and the surface is covered with an insulating plate 10 to reduce wear and tear on the fixed contact 9.
また、固定接点９の端子装置３側には、排気バリア１１
及び排気板１２並びに絶縁体１３が装備され、反対側に
は、絶縁板１３の先端が嵌まるＵ字型アークバリア１４
が装備されて、このＵ字空間に編組線１５にて異常電流
検出装置５に接続される可動接点板１６を介在させてい
る。Further, an exhaust barrier 11 is provided on the terminal device 3 side of the fixed contact 9.
and an exhaust plate 12 and an insulator 13, and on the opposite side, a U-shaped arc barrier 14 into which the tip of the insulator plate 13 fits.
A movable contact plate 16 connected to the abnormal current detection device 5 via a braided wire 15 is interposed in this U-shaped space.
この可動接点板１６は、例えば銅或いは銅合金の如き導
電材料で構成され、一端上面に可動接点板１６よりも耐
アーク性の高い例えば銀或いは銀合金の如き導電材料で
構成された可動接点１７が固定接点９に対向して固着さ
れ、可動接点板１６よりも高溶融温度の例えば鉄、ステ
ンレス等の導電材料で構成された電極板１８が可動接点
１７に近接若しくは当接させた状態で装備される。The movable contact plate 16 is made of a conductive material such as copper or a copper alloy, and has a movable contact 17 made of a conductive material such as silver or silver alloy, which has higher arc resistance than the movable contact plate 16, on the top surface of one end. is fixed opposite to the fixed contact 9, and an electrode plate 18 made of a conductive material such as iron or stainless steel having a higher melting temperature than the movable contact plate 16 is installed in close proximity to or in contact with the movable contact 17. be done.
尚、可動接点１７及び電極板１８の固定接点９に対する
位置関係は、接点９．１７の閉極から開極に至る可動接
点板１６の開極動作に伴って、固定接点９と可動接点１
７との開離距離よりも固定接点９と電極板１８との開離
距離が逆転して小さくなるようになっている。The positional relationship between the movable contact 17 and the electrode plate 18 with respect to the fixed contact 9 is such that the fixed contact 9 and the movable contact 1
The separation distance between the fixed contact 9 and the electrode plate 18 is reversely smaller than the separation distance between the fixed contact 9 and the electrode plate 7.
また、可動接点板１６は、その中央に枢支軸体１９を装
備して開閉機構部７に作用されて回転軸部２０を中心に
回転する各極連動用絶縁物製クロスパー２１に回転自在
に保持させている。The movable contact plate 16 is equipped with a pivot shaft 19 at its center, and is rotatably connected to an insulating cross spar 21 for interlocking each pole, which rotates around a rotation shaft 20 under the action of the opening/closing mechanism section 7. I am keeping it.
さらに、この可動接点板１６の他端にばね受はピン２２
を設けてクロスパー２１との間にばね２３を縮設し、通
常の開閉状態では可動接点板１６を接点圧力を付与する
よう反時計回りに付勢し、過電流発生時には電磁反発力
で時計回りに反転して接点開極し、クロスパー２１の回
転に伴って元の位置に復帰させるようになっている。Furthermore, a spring holder is provided with a pin 22 at the other end of the movable contact plate 16.
A spring 23 is compressed between the crossbar 21 and the movable contact plate 16 in the normal open/close state to apply contact pressure to the movable contact plate 16 counterclockwise, and when an overcurrent occurs, the movable contact plate 16 is biased clockwise by electromagnetic repulsion. The contacts are reversed and opened, and are returned to their original positions as the crossbar 21 rotates.
この接点装置１の消弧動作は、接点９．１７が閉極した
第６図（ａ）の如き状態で接点９．１７間に過電流が流
れると、第６図（ｂ）のように電磁反発力で可動接点板
１６とばね２３との関係で反転し固定接点９から可動接
点１７が開離すると同時に接点９．１７間にアーク電流
Ｉが流れる。The arc-extinguishing operation of the contact device 1 is performed when an overcurrent flows between the contacts 9 and 17 in the state shown in Fig. 6 (a), in which the contacts 9 and 17 are closed, as shown in Fig. 6 (b). Due to the repulsive force, the relationship between the movable contact plate 16 and the spring 23 is reversed, and the movable contact 17 is separated from the fixed contact 9, and at the same time, an arc current I flows between the contacts 9 and 17.
このアーク電流Ｉは、その可動接点板１６自身の開極進
行に伴い徐々に開離距離が相対的に短くなる電極板１８
方向へと広がり、可動接点１７から電極板１８に至る巾
広い範囲でアーク電流Ｉが流れる。This arc current I is caused by the electrode plate 18 whose separation distance gradually becomes relatively short as the movable contact plate 16 itself progresses.
The arc current I flows in a wide range from the movable contact 17 to the electrode plate 18.
このときのアーク電圧は、アーク電流Ｉの広がりにより
十分に高まることがなく、これに伴ってアーク電流Ｉと
アーク電圧の積、すなわち空間に発生する熱エネルギー
は抑制される。The arc voltage at this time does not increase sufficiently due to the spread of the arc current I, and accordingly, the product of the arc current I and the arc voltage, that is, the thermal energy generated in the space is suppressed.
さらに、第６図（ｃ）のようにクロスパー２１が開閉機
構部７の開極動作に伴い回転を始め、このクロスパー２
１の回転に伴い可動接点板１６が跳上り防止片２４に当
接して元の反時計回り方向の状態に反転し、第６図（ｄ
）の如き開極状態となると共に電流が略零となる状態を
迎えてアーク電流Ｉは消滅し回路遮断が行われる。Furthermore, as shown in FIG. 6(c), the cross spar 21 begins to rotate with the opening operation of the opening/closing mechanism 7, and this cross spar 2
As the movable contact plate 16 rotates, the movable contact plate 16 comes into contact with the jump prevention piece 24 and is reversed to its original counterclockwise state, as shown in Fig. 6(d).
), the current becomes substantially zero, the arc current I disappears, and the circuit is interrupted.
また、この空間で熱エネルギーにより発生したアークガ
スは、そのガス圧により排気バリア１１を外部方向に押
し曲げ、排気板１２の排気孔を通じて外部に排出される
。Further, the arc gas generated by thermal energy in this space pushes and bends the exhaust barrier 11 toward the outside due to the gas pressure, and is discharged to the outside through the exhaust hole of the exhaust plate 12.
尚、上述した接点装置１のアーク消弧動作は、可動接点
板１６が反転動作する状態で述べたが、接点９．１７間
に流れる電流の大きさによっては可動接点板１６が反転
することなく上述の如きアーク電流■が接点９．１７間
に流れることもある。この場合も上述と同様、接点９．
１７間に発生したアーク電流Ｉは電極板１８方向へと広
がり、可動接点１７から電極板１８に至る巾広い範囲で
アーク電流■が流れることとなる。The arc extinguishing operation of the contact device 1 described above has been described with the movable contact plate 16 in a reversing operation, but depending on the magnitude of the current flowing between the contacts 9 and 17, the movable contact plate 16 may not be reversed. An arc current (2) as described above may also flow between the contacts 9 and 17. In this case as well, contact 9.
The arc current I generated between 17 and 17 spreads toward the electrode plate 18, and arc current 2 flows over a wide range from the movable contact 17 to the electrode plate 18.
上述の如く、提案された回路遮断器は、固定接点９との
間に発生したアーク電流Ｉを可動接点１７から可動接点
板１６に装備した電極板１８にまで広げてアーク電圧の
上昇を抑制し、アーク電流■との積で生ずる熱エネルギ
ーの発生を抑さえて、アーク電流Ｉが略零の位置になる
のを待って、アーク電流Ｉを消弧することにより、十分
な空間が確保出来ない場合でも、確実な回路遮断を行え
るようにしたものである。As described above, the proposed circuit breaker suppresses the rise in arc voltage by spreading the arc current I generated between the movable contact 17 and the fixed contact 9 to the electrode plate 18 provided on the movable contact plate 16. By suppressing the generation of thermal energy generated by the product of , and arc current ■, and extinguishing arc current I after waiting for arc current I to reach approximately zero position, sufficient space cannot be secured. This ensures reliable circuit breakage even in the case of
しかして、上述の接点装置は、電極板が固定接点への可
動接点の接触を阻止しないように可動接点の高さを電極
板の高さより高くするよう可動接点と電極板との対向す
る部分に段さを設けているが、可動接点に発生したアー
ク電流を電極板にまで延ばした際に可動接点の電極板側
端部の温度上昇が極めて大きくなり、この温度上昇が接
点の溶融につながり、可動接点の消耗を早める結果とな
った。Therefore, in the above-mentioned contact device, the movable contact and the electrode plate face each other in such a way that the height of the movable contact is higher than the height of the electrode plate so that the electrode plate does not prevent the movable contact from contacting the fixed contact. Although the steps are provided, when the arc current generated in the movable contact is extended to the electrode plate, the temperature rise at the end of the movable contact on the electrode plate side becomes extremely large, and this temperature rise leads to melting of the contact. This resulted in accelerated wear of the movable contacts.
また、一方では、可動接点板に形成した接点座に可動接
点を装備する際に、可動接点の精密な位置決めが必要と
なり、固着作業に手間が掛かるものであった。On the other hand, when the movable contacts are mounted on the contact seats formed on the movable contact plate, precise positioning of the movable contacts is required, and the fixing work is time-consuming.
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、可動接点の消耗を抑制し、併せて可動接点
の装備に必要な位置決め作業の簡素化を図った接点装置
の提供にある。The present invention has been made in view of the above reasons, and its purpose is to provide a contact device that suppresses the wear and tear of movable contacts and also simplifies the positioning work necessary for equipping the movable contacts. be.
かかる課題を解決するために、固定接点に対向する可動
接点と、この可動接点を固着する接点座を形成した可動
接点板と、この可動接点板の開極動作に伴って前記固定
接点と可動接点との開離距離よりも固定接点側との距離
が逆転して小さ（なるように前記接点座側の面に装備す
ると共に前記接点座に対し立設する垂直面を設けた電極
板とで構成し、前記可動接点板に前記電極板を装備した
後で、前記可動接点板の接点座に前記電極板の垂直面に
側面を当接させて前記可動接点を載置し、前記可動接点
板に前記可動接点を固着加工している。In order to solve this problem, we have developed a movable contact that faces a fixed contact, a movable contact plate that forms a contact seat that fixes this movable contact, and the fixed contact and movable contact that are connected to each other as the movable contact plate opens. The electrode plate is installed on the surface of the contact seat side and has a vertical surface that stands upright with respect to the contact seat so that the distance from the fixed contact side is inversely smaller than the separation distance from the contact seat. After the movable contact plate is equipped with the electrode plate, the movable contact is placed on the contact seat of the movable contact plate with its side surface in contact with the vertical surface of the electrode plate, and the movable contact is mounted on the movable contact plate. The movable contact is fixed.
上述の接点装置によれば、可動接点は電極板に当接した
状態で固着作業が行われるから、可動接点と電極板との
空間が著しく狭くなり、可動接点に発生したアーク電流
を電極板にまで延ばした際に大きくなる可動接点の電極
板側端部の温度上昇が電極板に伝導されて抑制され、接
点の溶融を少なくして、可動接点の消耗が抑制出来る。According to the above-mentioned contact device, since the movable contact is fixed while in contact with the electrode plate, the space between the movable contact and the electrode plate becomes extremely narrow, and the arc current generated in the movable contact is transferred to the electrode plate. The temperature rise at the end of the movable contact on the electrode plate side, which increases when the movable contact is extended, is conducted to the electrode plate and suppressed, reducing melting of the contact and suppressing wear and tear of the movable contact.
また、可動接点は電極板に当接した状態で接点座に載置
されるから、可動接点の装備に必要な位置決め作業の簡
素化が図れる。Furthermore, since the movable contact is placed on the contact seat in contact with the electrode plate, the positioning work necessary for equipping the movable contact can be simplified.
以下、本発明を一実施例として掲げた図面第１図乃至第
３図に基づき、上述した従来の技術と同一のものには同
符号を付して説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The following description will be made based on FIGS. 1 to 3 showing the present invention as an embodiment, and the same reference numerals will be given to the same parts as those in the above-mentioned conventional technology.
すなわち、可動接点板１６に、固定接点（図示せず）に
対向する可動接点１７を装備する接点座２５を形成する
と共に、この接点座２５側の面に内側寸法Ｌ１よりも外
側寸法Ｌ２を大きくし外方向に広がる突起２６を２ケ所
の四部２７を設けることにより形成している。That is, a contact seat 25 equipped with a movable contact 17 facing a fixed contact (not shown) is formed on the movable contact plate 16, and the outer dimension L2 is larger than the inner dimension L1 on the surface on the contact seat 25 side. The protrusion 26 that spreads outward is formed by providing four portions 27 at two locations.
さらに、この突起２６間で突起２６に近接した位置に貫
通孔２８を形成し、この貫通孔２８にクロスバ−（図示
せず）への枢支軸体１９を挿入している。Furthermore, a through hole 28 is formed between the projections 26 at a position close to the projections 26, and a pivot shaft 19 for a crossbar (not shown) is inserted into the through hole 28.
しかも、電極板１８に、外側寸法Ｌ３よりも内側寸法Ｌ
４を大きくし内方向に広がる形状とした溝２９を可動接
点板１６の２ケ所の凹部２７に嵌まる２ケ所の突起３０
を設けて形成し、この溝２９に可動接点板１６の突起２
６を嵌入している。Moreover, the electrode plate 18 has an inner dimension L than an outer dimension L3.
Grooves 30 at two locations fit into two recesses 27 of the movable contact plate 16.
The protrusion 2 of the movable contact plate 16 is formed in this groove 29.
6 is inserted.
この可動接点板１６への電極板１８の装備は、接点座２
５側の面に位置させ、可動接点板１６の開極動作に伴っ
て固定接点（図示せず）と可動接点１７との開離距離よ
りも固定接点（図示せず）側との距離が逆転して小さく
なるようにして配設される。The arrangement of the electrode plate 18 on the movable contact plate 16 is as follows:
5 side, and as the movable contact plate 16 opens, the distance between the fixed contact (not shown) and the movable contact 17 is reversed from the distance between the fixed contact (not shown) and the movable contact 17. It is arranged so that it becomes small.
また、電極板１８の先端は、可動接点板１６の接点座２
５に対し立設する垂直面３１となっている。Further, the tip of the electrode plate 18 is connected to the contact seat 2 of the movable contact plate 16.
5 is a vertical surface 31 standing upright.
この垂直面３１は、電極板１８を可動接点板１６に装備
した状態では接点座２５よりも突出し、さらに可動接点
１７を装備した状態では可動接点１７よりも落込んだ高
さとなっている。This vertical surface 31 protrudes from the contact seat 25 when the electrode plate 18 is mounted on the movable contact plate 16, and is lower than the movable contact 17 when the movable contact 17 is mounted.
しかも、この垂直面３１は、接点座２５に近接若しくは
当接した位置としている。Moreover, this vertical surface 31 is located close to or in contact with the contact seat 25.
さらに、可動接点板１６には、編組線１５をスポット溶
接して接合すると共に、ばね受はピン２２を可動接点板
１６に形成した貫通孔３２に挿通固定する。Further, the braided wire 15 is spot-welded to the movable contact plate 16 and joined, and the pin 22 of the spring receiver is inserted and fixed into a through hole 32 formed in the movable contact plate 16.
しかして、可動接点１７及び電極板１８並びに枢支軸体
１９の可動接点板１６への結合手順を以下説明する。The procedure for connecting the movable contact 17, the electrode plate 18, and the pivot shaft 19 to the movable contact plate 16 will now be described.
先ず、第３図の如き各部品状態から、可動接点板１６の
突起２６を電極板１８の溝２９に嵌入すると共に可動接
点板１６の貫通孔２８に枢支軸体１９を挿入し可動接点
板１６に電極板１８及び枢支軸体１９を位置決めする。First, from the state of each component as shown in FIG. 3, the projections 26 of the movable contact plate 16 are fitted into the grooves 29 of the electrode plate 18, and the pivot shaft body 19 is inserted into the through hole 28 of the movable contact plate 16 to remove the movable contact plate. 16, the electrode plate 18 and the pivot shaft 19 are positioned.
この位置決めされた状態から、貫通孔２８縁を両側より
押圧変形して押圧窪み３２を形成し、軸体１９を貫通孔
２８の縮みにより強固に固着し、また外向き、すなわち
突起２６方向の伸びを発生させて突起２６を膨らませ、
この突起２６の膨らみにより電極板１８の溝２９への密
着を良くして電極板１８の結合を強固に行ない、第２図
の如き状態とする。From this positioned state, the edges of the through hole 28 are pressed and deformed from both sides to form a pressing depression 32, and the shaft body 19 is firmly fixed by the contraction of the through hole 28, and the extension outward, that is, in the direction of the protrusion 26. is generated to inflate the protrusion 26,
The bulge of the protrusion 26 improves the close contact of the electrode plate 18 with the groove 29, thereby firmly bonding the electrode plate 18, resulting in a state as shown in FIG. 2.
この電極板１８及び枢支軸体１９を可動接点板１６に装
備した状態から、可動接点板１６の接点座２５に電極板
１８の垂直面３１に側面３３を当接させて可動接点１７
を載置する。With the electrode plate 18 and the pivot shaft 19 mounted on the movable contact plate 16, the movable contact 17 is brought into contact with the contact seat 25 of the movable contact plate 16 with the side surface 33 in contact with the vertical surface 31 of the electrode plate 18.
Place.
この可動接点１７を位置決めして可動接点板１６に載置
した状態で、可動接点１７を可動接点板１６に固着し、
第１図の如き状態とする。With this movable contact 17 positioned and placed on the movable contact plate 16, the movable contact 17 is fixed to the movable contact plate 16,
The state is as shown in FIG.
この固着方法は、可動接点１７の接点座２５への当接面
を溶融して接合する方法、ロー付は接合する方法等があ
る。This fixing method includes a method in which the contact surface of the movable contact 17 to the contact seat 25 is melted and joined, a method in which brazing is performed, and the like.
尚、可動接点板への編組線１５及びばね受はビン２２の
装備は実施例では、可動接点１７の装備前に成したが、
可動接点１７の装備後でもよい。In addition, in the embodiment, the braided wire 15 and the spring holder were installed before the movable contact 17 was installed on the movable contact plate.
This may be done after the movable contact 17 is installed.
本発明の接点装置は上記の如く構成したので、可動接点
は電極板に当接した状態で固着作業が行われるから、可
動接点と電極板との空間が著しく狭くなり、可動接点に
発生したアーク電流を電極板にまで延ばした際に大きく
なる可動接点の電極板側端部の温度上昇が電極板に伝導
されて抑制され、接点の溶融を少なくして、可動接点の
消耗が抑制出来る。また、可動接点は電極板に当接した
状態で接点座に載置されるから、可動接点の装備に必要
な位置決め作業の簡素化が図れる効果を奏する。Since the contact device of the present invention is configured as described above, the movable contact is fixed while in contact with the electrode plate, so the space between the movable contact and the electrode plate becomes extremely narrow, and arcs generated at the movable contact are The temperature rise at the end of the movable contact on the electrode plate side, which increases when the current is extended to the electrode plate, is conducted to the electrode plate and is suppressed, reducing melting of the contact and suppressing wear and tear on the movable contact. Furthermore, since the movable contact is placed on the contact seat in contact with the electrode plate, it is possible to simplify the positioning work necessary for equipping the movable contact.
第１図は本発明の接点装置の一実施例を示す要部斜視図
、
第２図は第１図の接点装置の可動接点固着前の要部斜視
図、
第３図は第１図の接点装置の分解斜視図、第４図は本発
明の接点装置が適用され得る従来技術として掲げた回路
遮断器の断面正面図、第５図は第４図の接点装置の要部
断面斜視図、第６図（ａ）乃至（ｄ）は第４図の接点装
置の消弧作用の各経過を示す断面正面図である。
１−接点装置、２−器体、３．４一端子装置、５−・−
過電流検出装置、６・−ハンドル、７−開閉機構部、計
−・固定接点板、９−固定接点、１５−Ｗ組線、１６−
可動接点板、１７−可動接点、１８−電極板、１９軸体
、２５−接点座、２６−突起、２８−貫通孔、２９溝、
３〇−貫通孔、３１−垂直面、３２−押圧窪み、３３−
・側面、Ｉ−アーク電流。Fig. 1 is a perspective view of the main parts of an embodiment of the contact device of the present invention, Fig. 2 is a perspective view of the main parts of the contact device of Fig. 1 before the movable contact is fixed, and Fig. 3 is the contact of Fig. 1. FIG. 4 is a cross-sectional front view of a circuit breaker as a prior art to which the contact device of the present invention can be applied; FIG. 5 is a cross-sectional perspective view of the main part of the contact device of FIG. 6(a) to 6(d) are sectional front views showing each progress of the arc extinguishing action of the contact device of FIG. 4. 1-contact device, 2-device body, 3.4-terminal device, 5-・-
Overcurrent detection device, 6-handle, 7-opening/closing mechanism section, meter--fixed contact plate, 9-fixed contact, 15-W wire assembly, 16-
Movable contact plate, 17 - Movable contact, 18 - Electrode plate, 19 Shaft body, 25 - Contact seat, 26 - Protrusion, 28 - Through hole, 29 Groove,
30-through hole, 31-vertical surface, 32-press depression, 33-
- Side, I-arc current.
Claims (1)
固着する接点座を形成した可動接点板と、この可動接点
板の開極動作に伴って前記固定接点と可動接点との開離
距離よりも固定接点側との距離が逆転して小さくなるよ
うに前記接点座側の面に装備すると共に前記接点座に対
し立設する垂直面を設けた電極板とで構成し、前記可動
接点板に前記電極板を装備した後で、前記可動接点板の
接点座に前記電極板の垂直面に側面を当接させて前記可
動接点を載置し、前記可動接点板に前記可動接点を固着
加工した接点装置。(1) A movable contact facing a fixed contact, a movable contact plate forming a contact seat that fixes the movable contact, and the separation distance between the fixed contact and the movable contact as the movable contact plate opens. and an electrode plate provided on the surface of the contact seat side so that the distance from the fixed contact side is reversed and smaller than that of the electrode plate, and an electrode plate provided with a vertical surface that stands upright with respect to the contact seat, and the movable contact plate After equipping the electrode plate with the movable contact plate, place the movable contact on the contact seat of the movable contact plate with the side surface in contact with the vertical surface of the electrode plate, and fix the movable contact on the movable contact plate. contact device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1077276A JP2734616B2 (en) | 1989-03-28 | 1989-03-28 | Contact device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1077276A JP2734616B2 (en) | 1989-03-28 | 1989-03-28 | Contact device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02256112A true JPH02256112A (en) | 1990-10-16 |
| JP2734616B2 JP2734616B2 (en) | 1998-04-02 |
Family
ID=13629339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1077276A Expired - Lifetime JP2734616B2 (en) | 1989-03-28 | 1989-03-28 | Contact device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2734616B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61173418A (en) * | 1985-01-25 | 1986-08-05 | 松下電工株式会社 | Contact switchgear |
-
1989
- 1989-03-28 JP JP1077276A patent/JP2734616B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61173418A (en) * | 1985-01-25 | 1986-08-05 | 松下電工株式会社 | Contact switchgear |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2734616B2 (en) | 1998-04-02 |
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