JPH1069846A - Circuit breaker - Google Patents
Circuit breakerInfo
- Publication number
- JPH1069846A JPH1069846A JP22541196A JP22541196A JPH1069846A JP H1069846 A JPH1069846 A JP H1069846A JP 22541196 A JP22541196 A JP 22541196A JP 22541196 A JP22541196 A JP 22541196A JP H1069846 A JPH1069846 A JP H1069846A
- Authority
- JP
- Japan
- Prior art keywords
- contact
- contacts
- circuit breaker
- arc
- arc extinguishing
- 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
Landscapes
- Breakers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、回路遮断器に係
り、特に大電流容量の回路遮断器に関する。The present invention relates to a circuit breaker, and more particularly to a circuit breaker having a large current capacity.
【０００２】[0002]
【従来の技術】回路遮断器、特に大電流容量の回路遮断
器には、接触抵抗によるジュール熱の発生を抑制するた
め、開閉接触子を分割して接触点を多くし、これにより
接触抵抗を低減したものが多い。2. Description of the Related Art In a circuit breaker, especially a circuit breaker having a large current capacity, in order to suppress generation of Joule heat due to contact resistance, switching contacts are divided to increase the number of contact points, thereby reducing the contact resistance. Many have been reduced.
【０００３】このような従来の回路遮断器の一例が特開
平８−１７３２２号公報に開示されている。図７はこの
回路遮断器の閉路状態における側面断面図である。この
回路遮断器は、引出枠１と遮断器本体２とからなり、引
出枠１には上下一対の外線接続端子３が備えられてい
る。一方、遮断器本体２には、外線接続端子３と接触す
る上下一対の第２接触子４と、開閉操作機構部７によっ
て水平方向に移動する第１接触子８及び上下一対の消弧
装置９が備えられている。各々の第２接触子４にはそれ
ぞれ第２接点５が備えられ、第１接触子８の両端には双
方の第２接点５と接触する一対の第１接点６が備えられ
ている。An example of such a conventional circuit breaker is disclosed in Japanese Patent Application Laid-Open No. H8-17322. FIG. 7 is a side sectional view of the circuit breaker in a closed state. This circuit breaker includes a drawer frame 1 and a circuit breaker main body 2, and the drawer frame 1 is provided with a pair of upper and lower outer line connection terminals 3. On the other hand, the circuit breaker main body 2 includes a pair of upper and lower second contacts 4 that are in contact with the external line connection terminal 3, a first contact 8 that moves in the horizontal direction by the opening / closing operation mechanism 7, and a pair of upper and lower arc extinguishing devices 9. Is provided. Each of the second contacts 4 is provided with a second contact 5, and both ends of the first contact 8 are provided with a pair of first contacts 6 that are in contact with both second contacts 5.
【０００４】図８及び図９は、それぞれ接触状態及び開
離状態にある第１接触子８と第２接触子４との関係を説
明する要部側面図であり、図１０は図９の状態を下方か
ら見た底面図である。第２接触子４は、図１０に示され
るように複数に分割されて平行に第１接触子８と対向し
て配置するように、成型絶縁物ベース１０、磁性板１
１、非磁性板１２及びアークランナ１３で囲まれるケー
シング内に遊嵌収納されている。各第２接触子４は、そ
れぞれ一端において第１接圧ばね１４で外線接続端子３
方向に付勢されると共に他端において第２接圧ばね１５
で第１接触子８方向に付勢されている。FIGS. 8 and 9 are side views of a main part for explaining a relationship between the first contact 8 and the second contact 4 in a contact state and an open state, respectively. FIG. FIG. 4 is a bottom view as viewed from below. The second contact 4 is divided into a plurality of parts as shown in FIG. 10, and the molded insulator base 10 and the magnetic plate 1 are arranged in parallel so as to face the first contact 8.
1. It is loosely housed in a casing surrounded by the non-magnetic plate 12 and the arc runner 13. Each of the second contacts 4 has a first contact pressure spring 14 at one end thereof and an external line connection terminal 3.
And a second contact pressure spring 15 at the other end.
Urged in the direction of the first contact 8.
【０００５】第２接触子４は、図９及び図１０に示され
るように、第２接点５と第１接点６とが互いに開離して
いるとき、すなわちこの回路遮断器が開路状態にあると
きは、第２接圧ばね１５の付勢力により第２接触子４の
端部４ａが非磁性板１２の係合縁１２ａと係合してお
り、一方図８に示されるように、回路遮断器が閉路して
いるときは、第２接圧ばね１５の付勢力に抗して第１接
点６が第２接点５を右方向に押圧し、これにより第２接
触子４の端部４ａと係合縁１２ａが互いに開離する。As shown in FIGS. 9 and 10, when the second contact 5 and the first contact 6 are separated from each other, that is, when the circuit breaker is in an open state, as shown in FIGS. 8, the end 4a of the second contact 4 is engaged with the engaging edge 12a of the non-magnetic plate 12 by the urging force of the second contact pressure spring 15, while the circuit breaker is closed as shown in FIG. Is closed, the first contact 6 presses the second contact 5 rightward against the urging force of the second contact pressure spring 15, thereby engaging with the end 4 a of the second contact 4. The mating edges 12a are separated from each other.
【０００６】この従来の回路遮断器においては、図１０
に示されるように、非磁性板１２に第１接点６と平行な
直線状の係合縁１２ａが形成されているため、回路遮断
器が開路状態にあるときは、複数の第２接触子４の第２
接点５はそれぞれ第１接点６に対して互いに等しい開離
距離となっている。In this conventional circuit breaker, FIG.
As shown in FIG. 5, since the non-magnetic plate 12 has a linear engaging edge 12a parallel to the first contact 6, when the circuit breaker is in an open state, the plurality of second contacts 4 are formed. Second
The contacts 5 have the same separation distance from each other with respect to the first contact 6.
【０００７】図１１は、遮断器本体２の上部側に配置さ
れた消弧装置９を示す正面図である。消弧装置９は、左
右一対の絶縁板９ａの間に下辺が略Ｖ字状に切欠かれた
複数の磁性鋼板からなる消弧板９ｂが保持されて構成さ
れ、この消弧板９ｂに近接して第１接点６と第２接点５
との接触部が位置するように取り付けられる。なお、従
来の回路遮断器の中には、上記のものとは逆に、固定接
触子が幅広の接触部であって、可動接触子が複数に分割
されているものもある。FIG. 11 is a front view showing the arc extinguishing device 9 arranged on the upper side of the circuit breaker main body 2. The arc extinguishing device 9 is configured to hold an arc extinguishing plate 9b made of a plurality of magnetic steel plates whose lower sides are cut out in a substantially V shape between a pair of left and right insulating plates 9a. The first contact 6 and the second contact 5
It is attached so that a contact portion with the locating member is located. In some conventional circuit breakers, the fixed contact is a wide contact portion and the movable contact is divided into a plurality of contacts, contrary to the above.
【０００８】[0008]
【発明が解決しようとする課題】このような従来の回路
遮断器の接触子装置は、第１接点６と第２接点５が互い
に平行に配置されているため、閉路操作において第１接
点６が複数に分割された全ての第２接点５と同時に接触
することとなる。したがって、複数の第２接点５をそれ
ぞれ付勢している複数の第２接圧ばね１５の作用力が同
時に第１接触子８を介して開閉操作機構部７に作用する
ため、開閉操作機構部７に大きな閉路操作力と強固な機
構が必要となる。In such a conventional contact device of a circuit breaker, the first contact 6 and the second contact 5 are arranged in parallel with each other, so that the first contact 6 is closed in the closing operation. All the second contacts 5 divided into a plurality of pieces will come into contact at the same time. Accordingly, since the acting forces of the plurality of second contact pressure springs 15 urging the plurality of second contacts 5 respectively act on the opening / closing operation mechanism 7 via the first contacts 8 at the same time, the opening / closing operation mechanism 7 7 requires a large closing operation force and a strong mechanism.
【０００９】また、開路操作にあっては、第１接点６と
第２接点５の複数の接触点が同時に開離するため、アー
クが第１接点６と複数の第２接点５との間に分散して発
生してしまい、アークが消弧装置９の方向へ誘引されに
くく、消弧性能に間題があって電流遮断性能が抑制され
るという問題点があった。In the opening operation, since a plurality of contact points of the first contact 6 and the second contact 5 are simultaneously opened, an arc is generated between the first contact 6 and the plurality of second contacts 5. There is a problem in that the arcs are dispersed and generated, so that the arc is hardly attracted toward the arc extinguishing device 9, and there is a problem in the arc extinguishing performance, and the current interrupting performance is suppressed.
【００１０】この発明はこのような問題点を解消するた
めになされたもので、小さな操作力で閉路でき且つ電流
遮断性能に優れた回路遮断器を提供することを目的とす
る。The present invention has been made to solve such a problem, and an object of the present invention is to provide a circuit breaker which can be closed with a small operating force and has excellent current interruption performance.
【００１１】[0011]
【課題を解決するための手段】上記の間題点を解決する
ために、本発明に係る回路遮断器は、複数の消弧板を有
する消弧装置と、この消弧装置に近接して配置される平
面状の接触面を有する第１接触子と、それぞれが第１接
触子の接触面と対向する接触面を有し且つそれぞれが遊
嵌装着されて第１接触子の方向に付勢される、複数に分
割された第２接触子と、第１接触子と複数の第２接触子
との開離状態において、複数の第２接触子は中央部から
両端部に配置されるにしたがって第１接触子の接触面と
の開離距離が順次大きくなるように複数の第２接触子を
係止する係止縁を有する係止手段とを備えたものであ
る。In order to solve the above problems, a circuit breaker according to the present invention is provided with an arc extinguishing device having a plurality of arc extinguishing plates, and an arc extinguishing device arranged near the arc extinguishing device. First contacts having a planar contact surface to be formed, each having a contact surface facing the contact surface of the first contact, and each being loosely fitted and urged in the direction of the first contact. In the separated state of the second contact divided into a plurality of second contacts and the first contact and the plurality of second contacts, the plurality of second contacts are arranged in the first direction from the center to the both ends as the second contacts are arranged at both ends. Locking means having locking edges for locking the plurality of second contacts so that the separation distance between the one contact and the contact surface is sequentially increased.
【００１２】このような構成により、第１接触子と第２
接触子とが接触するときは中央部に配置された第２接触
子が先に接触し、次にその両隣の第２接触子が接触し、
順次両端部の第２接触子まで次々と接触するため、閉路
操作時に必要な荷重が段階的に増加し、全ての第２接触
子が同時に接触するより少ない操作力で閉路可能とな
る。また、開路操作時には、両端部の第２接触子から開
離を始めて最後に中央部の第２接触子が開離するため、
アークが中央に集中して発生し消弧性能が改善される。With such a configuration, the first contact and the second contact
When the contacts come in contact with each other, the second contact located at the center contacts first, and then the second contacts on both sides come into contact,
Since the second contactors at both ends are sequentially contacted one after another, the load required at the time of closing operation increases stepwise, and the circuit can be closed with less operating force than when all the second contacts come into contact at the same time. In addition, at the time of the opening operation, since the separation starts from the second contacts at both ends and finally the second contact at the center is separated,
The arc is concentrated at the center and the arc extinguishing performance is improved.
【００１３】また、複数の第２接触子をその接触面側に
近づくほど互いの間隔が広がるように全体として扇形に
配列することができる。このようにすれば、隣合う第２
接触子の接触面近傍相互間のギャップが確保でき、大電
流を遮断する際に高温のアークによって発生するかも知
れない金属の小溶融物が隣合う第２接触子相互間をブリ
ッジする虞れがなくなる。さらに、閉路時に中央部以外
の第２接触子は第１接触子の接触面とは角度を持って接
触し、接触後は係止縁から離脱して平面的に接触する
が、この接触動作において第２接触子は遊嵌装着されて
いるため横ゆれし、接触初期の接触位置からずれるた
め、接点の接触の瞬間にアークが発生しても、アークに
よる痕跡発生部と異なる位置で接触するようになり接触
の安定性が保たれる。Also, the plurality of second contacts can be arranged in a fan shape as a whole such that the distance between them increases as the contact surface approaches the contact surface side. In this way, the adjacent second
The gap between the contact surfaces near the contact surfaces of the contacts can be ensured, and a small molten metal of a metal that may be generated by a high-temperature arc when interrupting a large current may cause a bridge between the adjacent second contacts. Disappears. Further, at the time of closing, the second contact other than the central portion contacts the contact surface of the first contact at an angle, and after contact, separates from the locking edge and makes planar contact. Since the second contact is loosely fitted, the second contact is displaced from the initial contact position, so that even if an arc is generated at the moment of contact of the contact, the second contact comes into contact with a position different from a trace generating portion due to the arc. And the stability of the contact is maintained.
【００１４】[0014]
【発明の実施の形態】この発明の実施の形態を実施例に
よって以下に説明する。なお、実施例に係る回路遮断器
は、第２接触子の配設状態及び非磁性板の係合縁の形状
以外は前述の図７〜図１１に示した従来の回路遮断器と
同一であるため、同一の部分については同一の記号を付
し、詳細の説明は省略する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below by way of examples. The circuit breaker according to the embodiment is the same as the conventional circuit breaker shown in FIGS. 7 to 11 except for the arrangement of the second contact and the shape of the engaging edge of the nonmagnetic plate. Therefore, the same portions are denoted by the same reference symbols, and detailed description will be omitted.
【００１５】図１は、実施例に係る回路遮断器の開離状
態にある第１接触子８と第２接触子４との関係を下方か
ら見た底面図であり、従来技術の図１０に相当する図で
ある。複数に分割された第２接触子４１〜４４はそれぞ
れ非磁性板１２の係合縁１２ｂに係合する端部４１ａ〜
４４ａを有すると共に第１接触子８の平面状の第１接点
６と対向する端部には第２接点５１〜５４が形成されて
いる。ここで、非磁性板１２の係合縁１２ｂは、第１接
触子８に向かって凸となるように円弧状に形成されてい
る。非磁性板１２及び係合縁１２ｂがそれぞれこの発明
の係止手段及び係止縁を構成している。FIG. 1 is a bottom view of the relationship between the first contact 8 and the second contact 4 in the open state of the circuit breaker according to the embodiment viewed from below. FIG. The second contacts 41 to 44 divided into a plurality of end portions 41 a to 41 a to engage with the engagement edges 12 b of the nonmagnetic plate 12, respectively.
Second contacts 51 to 54 are formed at the end of the first contact 8 facing the first contact 6 and having the first contact 8. Here, the engaging edge 12 b of the nonmagnetic plate 12 is formed in an arc shape so as to protrude toward the first contact 8. The non-magnetic plate 12 and the engaging edge 12b constitute the locking means and the locking edge of the present invention, respectively.
【００１６】また、各第２接触子４１〜４４は、図７に
示した従来の回路遮断器と同様に、第２接圧ばね１５に
より第１接触子８の方向へ付勢されている。このため、
図１に示されるように、回路遮断器の開路状態におい
て、複数の第２接触子４１〜４４は、中央部に配置され
た第２接触子４１の第２接点５１が第１接触子８の第１
接点６に対して最も接近し、その両隣の第２接触子４２
の第２接点５２が次に接近しており、両側端の第２接触
子４４の第２接点５４に近づくほど第１接点６との開離
距離が大きくなるように、且つ全体として第２接点５１
〜５４側に近づくほど互いの間隔が広がる扇形状に配設
されている。Each of the second contacts 41 to 44 is urged in the direction of the first contact 8 by a second contact pressure spring 15, similarly to the conventional circuit breaker shown in FIG. For this reason,
As shown in FIG. 1, in the open state of the circuit breaker, the plurality of second contacts 41 to 44 are configured such that the second contact 51 of the second contact 41 arranged in the center is the first contact 8. First
The second contact 42 closest to the contact 6 and on both sides thereof
Of the second contact 52 next to the second contactor 44, so that the closer to the second contact 54 of the second contactor 44 on both side ends, the greater the separation distance from the first contact 6 and the second contact 52 as a whole 51
They are arranged in a fan shape such that the distance between them increases as they approach the ~ 54 side.
【００１７】このように構成される本実施例の回路遮断
器の閉路動作について説明する。図７に示した開閉操作
機構部７を操作して、図１の状態から第１接触子８を右
方向すなわち第２接触子４１〜４４の方向へ移動させる
と、先ず平面状の第１接点６が中央部に配置された第２
接触子４１の第２接点５１に平面的に接触する。さらに
第１接触子８を右方向へ移動させると、第２接触子４１
の端部４１ａが非磁性板１２の係合縁１２ｂから離脱す
ると共に、第１接点６が図２及び図３のごとく第２接触
子４２の第２接点５２の一方の角部で接触する。このと
き、図４に示されるように、第２接触子４２の端部４２
ａはまだ係合縁１２ｂに係合したままである。第１接触
子８がさらに移動すると、図５のごとく第２接触子４２
の第２接点５２の全面で第１接点６と接触し、図６のご
とく第２接触子４２の端部４２ａが係合縁１２ｂから離
脱する。このとき、第２接触子４２は遊嵌装着されてい
るため、接圧ばねの作用により第２接触子４２の端部４
２ｂが第２接触子４３の端部４３ｂの方向へ移動して当
接し、当接した後は第２接点５２を備えた端部が第２接
点５１側へ摺動する。すなわち、第２接触子４２は横ゆ
れして、接触初期の接触位置からずれる。同様に、順次
第２接触子４３の第２接点５３、第２接触子４４の第２
接点５４が第１接触子６と接触し閉路動作が完了する。The closing operation of the circuit breaker of the present embodiment configured as described above will be described. When the first contact 8 is moved rightward, that is, in the direction of the second contacts 41 to 44 from the state shown in FIG. 1 by operating the opening / closing operation mechanism 7 shown in FIG. 6 is located at the center of the second
It comes into contact with the second contact point 51 of the contact 41 in a planar manner. When the first contact 8 is further moved rightward, the second contact 41
End 41a is disengaged from the engaging edge 12b of the non-magnetic plate 12, and the first contact 6 comes into contact with one corner of the second contact 52 of the second contact 42 as shown in FIGS. At this time, as shown in FIG.
a is still engaged with the engagement edge 12b. When the first contact 8 further moves, as shown in FIG.
The entire surface of the second contact 52 contacts the first contact 6, and the end 42a of the second contact 42 is separated from the engagement edge 12b as shown in FIG. At this time, since the second contact 42 is loosely fitted, the end 4 of the second contact 42 is actuated by the action of the contact pressure spring.
2b moves in the direction of the end 43b of the second contact 43 and makes contact therewith. After the contact, the end provided with the second contact 52 slides toward the second contact 51. That is, the second contactor 42 sways laterally and deviates from the initial contact position. Similarly, the second contact 53 of the second contact 43 and the second contact 53 of the second contact 44
The contact 54 comes into contact with the first contact 6 to complete the closing operation.
【００１８】第２接点５１〜５４のそれぞれに作用する
付勢力に抗して、第１接触子８の第１接点６がこのよう
に時間差をもって分割された第２接点５１〜５４と順次
接触して移動するため、小さな操作力で閉路が可能とな
る。さらに、それぞれの第２接点５１〜５４の接触初期
の接触位置と接触完了時の接触位置が異なることによっ
て、接触の瞬間に小さい投入アークが発生しても、接触
完了時にはアークによる痕跡発生部と異なる部分で接触
するため、良好な接触状態を確保でき通電容量の向上が
望める。The first contact 6 of the first contact 8 sequentially comes into contact with the second contacts 51 to 54 thus divided with a time lag against the urging force acting on each of the second contacts 51 to 54. , The circuit can be closed with a small operation force. Furthermore, since the small initial arc is generated at the moment of contact due to the difference between the initial contact position of the second contact points 51 to 54 and the contact position at the time of contact completion, a trace generating portion due to the arc is formed at the time of contact completion. Since contact is made at different portions, a good contact state can be ensured, and an improvement in current carrying capacity can be expected.
【００１９】次に、本実施例の回路遮断器の開路動作に
ついて説明する。第１接触子８の第１接点６と第２接触
子４１〜４４の全ての第２接点５１〜５４とが接触して
いる状態から開閉操作機構部７を操作して開路操作を行
い第１接点６と第２接点５１〜５４が開離すると、複数
に分割された第２接触子４１〜４４の第２接点５１〜５
４のうち中央部に位置する第２接点５１ほど第１接点６
との開離距離が小さいため、発生するアークは、この中
央部の方に集中する。このため、アークが消弧装置９の
消弧板９ｂに誘引されやすくなる。また、複数に分割さ
れた第２接触子４１〜４４は開路状態において全体的に
略扇形に配置されているため、隣合う第２接点間の隙間
が大きく、アークによって小さい金属溶片が発生して
も、この金属溶片が互いに隣合う第２接点の双方にまた
がって付着することがなく、各第２接点の分割性が維持
され所期の性能を維持することができる。Next, the opening operation of the circuit breaker of this embodiment will be described. From the state where the first contact 6 of the first contact 8 and all the second contacts 51 to 54 of the second contacts 41 to 44 are in contact with each other, the opening and closing operation mechanism 7 is operated to open the circuit. When the contact 6 and the second contacts 51 to 54 are separated from each other, the second contacts 51 to 5 of the plurality of divided second contacts 41 to 44 are separated.
4, the second contact 51 located at the central portion is closer to the first contact 6.
Due to the small separation distance from the center, the generated arc concentrates on the central portion. Therefore, the arc is easily attracted to the arc-extinguishing plate 9b of the arc-extinguishing device 9. In addition, since the plurality of divided second contacts 41 to 44 are generally arranged in a substantially sector shape in an open state, a gap between adjacent second contacts is large, and a small metal flake is generated by the arc. However, the metal flakes do not adhere to both of the adjacent second contacts, so that the division of each of the second contacts is maintained, and the desired performance can be maintained.
【００２０】なお、上記の実施例では係合縁１２ｂが円
弧状に形成されていたが、その頂部が第１接点６に最も
近くなるように屈曲した直線状、すなわち「く」字形状
に係合縁を形成することもでき、同様の効果を奏する。In the above-described embodiment, the engaging edge 12b is formed in an arc shape. However, the engaging edge 12b is bent so as to be closest to the first contact point 6, that is, in a "C" shape. A mating edge can also be formed, and a similar effect is achieved.
【００２１】[0021]
【発明の効果】以上説明したように、本発明によれば、
小さな操作力で閉路でき、電流遮断性能に優れた、通電
容量の大きい回路遮断器を実現することができる。As described above, according to the present invention,
A circuit breaker that can be closed with a small operating force, has excellent current interrupting performance, and has a large current carrying capacity can be realized.
【図１】この発明の実施の形態に係る回路遮断器の開路
状態の接触子部分を示す底面図である。FIG. 1 is a bottom view showing a contact portion in an open state of a circuit breaker according to an embodiment of the present invention.
【図２】図１の回路遮断器の閉路過程における接触子部
分を示す底面図である。FIG. 2 is a bottom view showing a contact portion of the circuit breaker of FIG. 1 in a closing process.
【図３】図２の部分Ａの拡大図である。FIG. 3 is an enlarged view of a portion A of FIG. 2;
【図４】図２の部分Ｂの拡大図である。FIG. 4 is an enlarged view of a part B of FIG. 2;
【図５】閉路過程がさらに進んだ状態における部分Ａの
拡大図である。FIG. 5 is an enlarged view of a portion A in a state where a closing process is further advanced.
【図６】閉路過程がさらに進んだ状態における部分Ｂの
拡大図である。FIG. 6 is an enlarged view of a portion B in a state where a closing process has further progressed.
【図７】従来の回路遮断器を示す側面断面図である。FIG. 7 is a side sectional view showing a conventional circuit breaker.
【図８】図７の回路遮断器の閉路状態の接触子部分を示
す要部断面図である。8 is a sectional view of a main part showing a contact portion of the circuit breaker of FIG. 7 in a closed state.
【図９】図７の回路遮断器の開路状態の接触子部分を示
す要部断面図である。9 is a cross-sectional view of a main part showing a contact portion of the circuit breaker of FIG. 7 in an open circuit state.
【図１０】図７の回路遮断器の開路状態の接触子部分を
示す底面図である。FIG. 10 is a bottom view showing a contact portion of the circuit breaker of FIG. 7 in an open circuit state.
【図１１】図７の回路遮断器の消弧装置を示す正面図で
ある。FIG. 11 is a front view showing the arc extinguishing device of the circuit breaker of FIG. 7;
１ 引出枠 ２ 遮断器本体 ３ 外線接続端子 ４１〜４４ 第２接触子 ４１ａ〜４４ａ 端部 ４２ｂ，４３ｂ 端部 ５１〜５４ 第２接点 ６ 第１接点 ７ 開閉操作機構部 ８ 第１接触子 ９ 消弧装置 １２ 非磁性板 １２ｂ 係合縁 １４ 第１接圧ばね １５ 第２接庄ばね REFERENCE SIGNS LIST 1 drawer frame 2 breaker body 3 external line connection terminal 41-44 second contact 41 a-44 a end 42 b, 43 b end 51-54 second contact 6 first contact 7 opening / closing operation mechanism 8 first contact 9 Arc device 12 Non-magnetic plate 12b Engagement edge 14 First contact pressure spring 15 Second contact spring
Claims (2)
する第１接触子と、 それぞれが前記第１接触子の接触面と対向する接触面を
有し且つそれぞれが遊嵌装着されて前記第１接触子の方
向に付勢される、複数に分割された第２接触子と、 前記第１接触子と前記複数の第２接触子との開離状態に
おいて、前記複数の第２接触子は中央部から両端部に配
置されるにしたがって前記第１接触子の接触面との開離
距離が順次大きくなるように前記複数の第２接触子を係
止する係止縁を有する係止手段とを備えたことを特徴と
する回路遮断器。1. An arc extinguishing device having a plurality of arc extinguishing plates, a first contact having a planar contact surface disposed close to the arc extinguishing device, each of which is in contact with the first contact. A plurality of second contacts having a contact surface facing the surface and each being loosely fitted and urged in the direction of the first contact, the first contact and the plurality of In the separated state from the second contact, the plurality of second contacts are arranged such that the distance from the contact surface of the first contact to the contact surface is gradually increased as the plurality of second contacts are arranged at both ends from the center. A locking means having a locking edge for locking the plurality of second contacts.
に近づくほど互いの間隔が広がるように全体として扇形
状に配列されたことを特徴とする請求項１に記載の回路
遮断器。2. The circuit breaker according to claim 1, wherein the plurality of second contacts are arranged in a fan shape as a whole such that a distance between the second contacts increases toward the contact surface side. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22541196A JP3838707B2 (en) | 1996-08-27 | 1996-08-27 | Circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22541196A JP3838707B2 (en) | 1996-08-27 | 1996-08-27 | Circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1069846A true JPH1069846A (en) | 1998-03-10 |
| JP3838707B2 JP3838707B2 (en) | 2006-10-25 |
Family
ID=16828959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22541196A Expired - Fee Related JP3838707B2 (en) | 1996-08-27 | 1996-08-27 | Circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3838707B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100356493C (en) * | 2003-12-22 | 2007-12-19 | 三菱电机株式会社 | Electric switcher |
-
1996
- 1996-08-27 JP JP22541196A patent/JP3838707B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100356493C (en) * | 2003-12-22 | 2007-12-19 | 三菱电机株式会社 | Electric switcher |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3838707B2 (en) | 2006-10-25 |
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