JPH11149855A - Circuit breaker - Google Patents

Circuit breaker

Info

Publication number
JPH11149855A
JPH11149855A JP31364597A JP31364597A JPH11149855A JP H11149855 A JPH11149855 A JP H11149855A JP 31364597 A JP31364597 A JP 31364597A JP 31364597 A JP31364597 A JP 31364597A JP H11149855 A JPH11149855 A JP H11149855A
Authority
JP
Japan
Prior art keywords
arc
movable contact
movable
contact
horn
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
Application number
JP31364597A
Other languages
Japanese (ja)
Other versions
JP3407102B2 (en
Inventor
Kazunori Fukutani
和則 福谷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP31364597A priority Critical patent/JP3407102B2/en
Publication of JPH11149855A publication Critical patent/JPH11149855A/en
Application granted granted Critical
Publication of JP3407102B2 publication Critical patent/JP3407102B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00Contacts
    • H01H1/12Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/22Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
    • H01H1/221Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
    • H01H1/226Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member having a plurality of parallel contact bars

Landscapes

  • Breakers (AREA)

Abstract

PROBLEM TO BE SOLVED: To suppress enlargement of the cross-sectional surface area of a heavy current arc generated by a short circuiting incident, lower the contact wear, and heighten the cut off capability by installing an arc horn projected from one end of a movable contactor in the direction toward the arc- extinguishing apparatus and held between flat plat conductors. SOLUTION: An arc horn 10 is installed between movable contactors 4a, 4b in respective phases and in the condition that the movable contactors 4a, 4b are placed apart, arc generated from each movable contactor 3a, 3b is driven by the magnetic action of an arc-extinguishing apparatus 6 and moved to the arc horn 10 from the tip part of the movable contactor 4. Consequently, the arc does not linger in the peripheral part of the movable contact 3, and the contact wear is suppressed. Furthermore, the arc generated in each movable contactor 4a, 4b is made to be move to the arc horn 10 and converge, so that the enlargement of the arc cross-sectional surface area is suppressed and at the same time, the arc is made easy to be driven by the magnetic action of the arc-extinguishing apparatus 6. As a result, the arc is easily extinguished, the cut off property is improved, and the wearing of the contacts is lowered.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】この発明は回路遮断器、特に
遮断性能向上のための可動接触子の構成に関するもので
ある。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit breaker, and more particularly to a structure of a movable contact for improving the breaking performance.

【0002】[0002]

【従来の技術】図6は、例えば特開平5−54786号
公報に示されるこの種の従来の回路遮断器の可動接触子
導体組立部の構成を消弧装置と共に示す平面図であり、
1相分のみを示す。図7は、図6における線D−Dに沿
う断面図である。図において、1は固定接触子、2は固
定接触子1の一端に固着された固定接点、3a,3bは
可動接触子4に固着された可動接点である。この場合の
可動接触子4は、ほぼ平行に延設された2枚の平板導体
4a,4bにより形成され、一方の平板導体4aに可動
接点3aが固着され、他方の平板導体4bに可動接点3
bが固着されている。5は可動接触子4が開閉動作でき
るように軸支するための支軸である。6は消弧装置であ
り、磁性体の金属板でほぼU字状に形成された複数枚の
消弧板6aを、絶縁材料により形成された消弧側板6b
により所定の間隔で保持したものである。7は固定接点
2と可動接点3(3a,3b)の間に発生したアーク
を、消弧装置6の方向へ走行させるアークランナであ
る。
2. Description of the Related Art FIG. 6 is a plan view showing the structure of a movable contact conductor assembly of a conventional circuit breaker of this kind disclosed in, for example, Japanese Patent Application Laid-Open No. 5-54786 together with an arc extinguishing device.
Only one phase is shown. FIG. 7 is a sectional view taken along line DD in FIG. In the figure, 1 is a fixed contact, 2 is a fixed contact fixed to one end of the fixed contact 1, and 3a and 3b are movable contacts fixed to the movable contact 4. The movable contact 4 in this case is formed by two plate conductors 4a and 4b extending substantially in parallel, the movable contact 3a is fixed to one plate conductor 4a, and the movable contact 3 is fixed to the other plate conductor 4b.
b is fixed. Reference numeral 5 denotes a support shaft for supporting the movable contact 4 so that the movable contact 4 can be opened and closed. Reference numeral 6 denotes an arc extinguishing device, which comprises a plurality of arc extinguishing plates 6a formed of a magnetic metal plate in a substantially U-shape, and an arc extinguishing side plate 6b formed of an insulating material.
Are held at predetermined intervals. Reference numeral 7 denotes an arc runner that causes an arc generated between the fixed contact 2 and the movable contact 3 (3a, 3b) to travel toward the arc extinguishing device 6.

【0003】図6及び図7において、固定接点2と可動
接点3(3a,3b)が接触した状態で負荷回路に通電
が可能となるが、固定接触子1より流入した電流は、固
定接点2を経由して可動接点3(3a,3b)から平板
導体4a,4bに並列に流れる。通電中に固定接点2と
可動接点3(3a,3b)が開離すると、固定接点2と
可動接点3(3a,3b)の間にはアークが発生し、同
時にアーク電圧が発生する。発生したアークは消弧板6
aの磁気作用によりアークランナ7を走行し、消弧装置
6の方向へ引き延ばされてアーク電圧が高まり、消弧板
6aにより冷却されて消弧される。
In FIGS. 6 and 7, the load circuit can be energized when the fixed contact 2 and the movable contact 3 (3a, 3b) are in contact with each other. Flows from the movable contact 3 (3a, 3b) to the plate conductors 4a, 4b in parallel. When the fixed contact 2 and the movable contact 3 (3a, 3b) are separated during energization, an arc is generated between the fixed contact 2 and the movable contact 3 (3a, 3b), and an arc voltage is generated at the same time. The generated arc is an arc extinguishing plate 6
The arc travels along the arc runner 7 by the magnetic action of a, and is extended in the direction of the arc extinguishing device 6 to increase the arc voltage. The arc is extinguished by the arc extinguishing plate 6a.

【0004】図8は、上記構成の可動接触子4が開離し
てアークが発生した状態を示す斜視図である。この開離
状態において、大電流を遮断した場合に可動接点3a,
3bから発生しているアーク20は、互いに独立でき
ず、図8に示すように太いアーク柱になってしまう。ア
ーク柱が太くなると消弧板6aによる磁気作用が効きに
くくなり、アーク20は接点3(3a,3b)近傍に滞
留する。また、小電流の細いアーク20でも、2本のア
ークは互いに同方向の電流であるために、電磁力により
引き付け合い、可動接点3(3a,3b)の近傍に滞留
した一本の太いアーク20になってしまうこともある。
FIG. 8 is a perspective view showing a state in which the movable contact 4 having the above structure is separated and an arc is generated. In this open state, when a large current is interrupted, the movable contacts 3a,
The arcs 20 generated from 3b cannot be independent of each other and become a thick arc column as shown in FIG. When the arc column becomes thicker, the magnetic action by the arc extinguishing plate 6a becomes less effective, and the arc 20 stays near the contact 3 (3a, 3b). Even in the case of the thin arc 20 having a small current, since the two arcs are currents in the same direction, they are attracted by the electromagnetic force and stay in the vicinity of the movable contact 3 (3a, 3b). Sometimes it becomes.

【0005】[0005]

【発明が解決しようとする課題】上記のように構成され
た回路遮断器では、短絡電流などの大電流を遮断する場
合、アーク20の断面積が可動接点3a,3bの近傍で
拡大して接点の消耗が大きくなるという問題点があっ
た。また、各可動接点3a,3bから発生するアーク2
0が結集してアーク断面が拡大してしまうと、その後の
大電流アーク20の断面積を縮小することは困難であ
り、しかも、断面積の大きなアークは磁気駆動され難
く、従って、消弧装置6などを用いても遮断性能の向上
を図るのが困難であるという問題点があった。
In the circuit breaker constructed as described above, when a large current such as a short-circuit current is interrupted, the cross-sectional area of the arc 20 is enlarged near the movable contacts 3a and 3b to increase the contact. However, there is a problem that the consumption of the tire increases. The arc 2 generated from each of the movable contacts 3a, 3b
If the arc cross-section is enlarged due to the concentration of zeros, it is difficult to reduce the cross-sectional area of the subsequent high-current arc 20, and the arc having a large cross-sectional area is difficult to be magnetically driven. However, there is a problem in that it is difficult to improve the blocking performance even when using No. 6 or the like.

【0006】この発明は、上記のような問題点を解消す
るためになされたもので、短絡事故などの大電流アーク
の断面積が拡大するのを抑制し、接点消耗が少なく、遮
断性能の高い回路遮断器を得ることを目的とする。
SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and suppresses an increase in the cross-sectional area of a high-current arc such as a short-circuit accident. The purpose is to obtain a circuit breaker.

【0007】[0007]

【課題を解決するための手段】この発明に係る回路遮断
器においては、各相毎に平板導体を複数枚平行に配置し
てそれぞれの平板導体の一端に可動接点を有するものに
おいて、平板導体の一端より消弧装置の方向に突出して
平板導体の間に保持されたアークホーンを備えたもので
ある。
In a circuit breaker according to the present invention, a plurality of flat conductors are arranged in parallel for each phase and a movable contact is provided at one end of each flat conductor. An arc horn is provided which protrudes from one end in the direction of the arc extinguishing device and is held between plate conductors.

【0008】また、可動接触子の平板導体の間に配置さ
れたアークホーンが、可動接触子より高融点材料で形成
されたものである。
The arc horn arranged between the flat conductors of the movable contact is made of a material having a higher melting point than the movable contact.

【0009】さらに、可動接触子の平板導体の間に配置
されたアークホーンが、磁性体材料で形成されたもので
ある。
Further, the arc horn disposed between the plate conductors of the movable contact is made of a magnetic material.

【0010】[0010]

【発明の実施の形態】実施の形態1.図1及び図2は、
この発明の実施の形態1である回路遮断器の可動接触子
導体組立部の構成を消弧装置と共に示す平面図であり、
1相分のみを示す。図2は、図1における線A−Aに沿
う要部断面図である。図において、1は固定接触子、2
は固定接触子の一端に固着された固定接点、3a,3b
は可動接触子4に固着された可動接点である。この場合
の可動接触子4は、ほぼ平行に延設された2枚の平板導
体4a,4bにより形成され、一方の平板導体4aに可
動接点3aが固着され、他方の平板導体4bに可動接点
3bが固着されている。5は可動接触子4が開閉動作で
きるように軸支するための支軸である。6は消弧装置で
あり、磁性体の金属板でほぼU字状に形成された複数枚
の消弧板6aを、絶縁材料により形成された消弧側板6
bにより所定の間隔で保持したものである。7は固定接
点2と可動接点3(3a,3b)の間に発生したアーク
を消弧装置6の方向へ走行させるアークランナである。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 1 and 2
It is a top view which shows the structure of the movable contact conductor assembly part of the circuit breaker which is Embodiment 1 of this invention with an arc-extinguishing device.
Only one phase is shown. FIG. 2 is a cross-sectional view of a main part along line AA in FIG. In the figure, 1 is a fixed contact, 2
Are fixed contacts fixed to one end of the fixed contact, 3a, 3b
Is a movable contact fixed to the movable contact 4. The movable contact 4 in this case is formed by two plate conductors 4a and 4b extending substantially in parallel, the movable contact 3a is fixed to one plate conductor 4a, and the movable contact 3b is fixed to the other plate conductor 4b. Is fixed. Reference numeral 5 denotes a support shaft for supporting the movable contact 4 so that the movable contact 4 can be opened and closed. Reference numeral 6 denotes an arc extinguishing device, which comprises a plurality of arc extinguishing plates 6a formed of a magnetic metal plate in a substantially U-shape, and an arc extinguishing side plate 6 formed of an insulating material.
b is held at a predetermined interval. Reference numeral 7 denotes an arc runner that causes an arc generated between the fixed contact 2 and the movable contact 3 (3a, 3b) to travel toward the arc extinguishing device 6.

【0011】10は各相毎の可動接触子4a,4bの間
に設置されたアークホーンであり、例えば冷間圧延鋼板
または熱間圧延鋼板等の金属材料で形成されている。1
0aはアークホーン10のほぼ中央部に一体に形成され
両側に突出した突起であり、可動接触子4に設けられた
貫通穴4cに、この突起10aを挿入することでアーク
ホーン10が保持される。固定接点2と可動接点3a,
3bの接触を安定させるため、可動接触子4a,4bは
支軸5を中心とし、所定の角度間においては個別に回動
できるように構成されているが、突起10aの外径を貫
通穴4cの内径より0.2〜0.5mm程度小さくする
ことで、可動接触子4a,4bの個別の回動を妨げない
構造にしている。また、10bは可動接触子の先端部4
dより消弧装置6の方向へ突出する突出部である。
Reference numeral 10 denotes an arc horn provided between the movable contacts 4a and 4b for each phase, and is formed of a metal material such as a cold rolled steel plate or a hot rolled steel plate. 1
Numeral 0a denotes a projection integrally formed substantially at the center of the arc horn 10 and protruding on both sides. The arc horn 10 is held by inserting the projection 10a into a through hole 4c provided in the movable contact 4. . Fixed contact 2 and movable contact 3a,
In order to stabilize the contact of the contact 3b, the movable contacts 4a, 4b are configured to be individually rotatable around a support shaft 5 within a predetermined angle, but the outer diameter of the projection 10a is changed to the through hole 4c. By making the inner diameter of the movable contacts 4a and 4b smaller than the inner diameter of the movable contacts by about 0.2 to 0.5 mm, the movable contacts 4a and 4b are prevented from individually rotating. 10b is the tip 4 of the movable contact.
It is a protruding portion that protrudes in the direction of the arc extinguishing device 6 from d.

【0012】図3は、回路遮断器の可動接触子導体組立
部を示す斜視図であり、可動接触子が開離した状態を示
す。20は大電流を遮断した直後に、固定接点2と可動
接点3(3a,3b)の間に発生したアークである。こ
の開離状態において、可動接点3a,3bからそれぞれ
発生したアーク20は、消弧装置(図示せず)の磁気作
用により駆動されて可動接触子4の先端部4dからアー
クホーン10へ移動する。
FIG. 3 is a perspective view showing a movable contact conductor assembly of the circuit breaker, showing a state where the movable contact is separated. Reference numeral 20 denotes an arc generated between the fixed contact 2 and the movable contact 3 (3a, 3b) immediately after the interruption of the large current. In this open state, the arcs 20 generated from the movable contacts 3a and 3b are driven by the magnetic action of the arc extinguishing device (not shown) and move from the tip 4d of the movable contact 4 to the arc horn 10.

【0013】この実施の形態によれば、アーク20が可
動接点3の近傍に停滞することなく、接点消耗が少なく
なる。また、可動接触子4a,4bからそれぞれ発生し
ているアーク20を、アークホーン10へ移動、集中さ
せることにより、アーク断面積の拡大を抑制すると共
に、消弧装置6の磁気作用により駆動し易くする。従っ
て、アーク20が消弧し易くなり、遮断性能が向上する
とともに、接点の消耗が少なくなる。
According to this embodiment, the arc 20 does not stay in the vicinity of the movable contact 3 and the contact wear is reduced. In addition, the arc 20 generated from each of the movable contacts 4 a and 4 b is moved and concentrated to the arc horn 10, thereby suppressing the expansion of the arc cross-sectional area and driving easily by the magnetic action of the arc extinguishing device 6. I do. Therefore, the arc 20 is easily extinguished, the breaking performance is improved, and the consumption of the contact is reduced.

【0014】実施の形態2.図4は、この発明の実施の
形態2である回路遮断器の可動接触子導体組立部を示す
要部側面図であり、可動接触子が開離した状態を示す。
図において、30はアークホーンであり、可動接触子4
より融点が高い材料、例えばステンレス鋼板、タングス
テン鋼板またはクロム鋼板等で形成されている。即ち、
一般的には、主回路の導電部材である可動接触子4は、
通電による熱損失を抑えるために電気抵抗の低い銅合金
が用いられているので、上記ステンレス鋼板、タングス
テン鋼板またはクロム鋼板は、いずれも可動接触子4よ
り融点が高い材料になる。
Embodiment 2 FIG. FIG. 4 is a main part side view showing a movable contact conductor assembly of a circuit breaker according to a second embodiment of the present invention, showing a state where the movable contact is separated.
In the figure, reference numeral 30 denotes an arc horn, and the movable contact 4
It is formed of a material having a higher melting point, for example, a stainless steel plate, a tungsten steel plate, a chromium steel plate, or the like. That is,
Generally, the movable contact 4, which is a conductive member of the main circuit,
Since a copper alloy having a low electric resistance is used to suppress heat loss due to energization, the above stainless steel plate, tungsten steel plate or chromium steel plate is a material having a higher melting point than the movable contact 4.

【0015】アークホーン30の材料の融点が、可動接
触子4の材料の融点と同等のときには、可動接触子4か
ら突出したアークホーン30の突出部30bが溶融して
しまうことがある。即ち、接点2,3間に発生したアー
ク20は、消弧板6aの磁気作用により図中の矢印Bの
ようにアークホーン30の突出部30bの方向へ移動す
るが、この間に接点2,3や可動接触子4、アークホー
ン30を溶融する。このように遮断によるアーク20の
発生を繰り返すうちに、可動接触子4から突出したアー
クホーン30の突出部30bが溶融してしまう。突出部
30bが溶融すると、その後はアーク断面積が拡大し遮
断性能が低下する。
When the melting point of the material of the arc horn 30 is equal to the melting point of the material of the movable contact 4, the projection 30b of the arc horn 30 projecting from the movable contact 4 may be melted. That is, the arc 20 generated between the contacts 2 and 3 moves in the direction of the protrusion 30b of the arc horn 30 as shown by the arrow B in the figure due to the magnetic action of the arc extinguishing plate 6a. And the movable contact 4 and the arc horn 30 are melted. As the arc 20 is repeatedly generated due to the interruption, the protrusion 30b of the arc horn 30 protruding from the movable contact 4 melts. When the protruding portion 30b melts, the arc cross-sectional area increases thereafter, and the breaking performance decreases.

【0016】この実施の形態によれば、前記のようにア
ークホーン30を可動接触子4より高融点の材料で形成
することにより、可動接触子4及びアークホーン30が
アーク20に接触したとき、アークホーン30の突出部
30bの方が可動接触子4の先端部4dより溶融され難
い。従って、繰り返しの電流遮断においても、常に、可
動接触子4の先端部4dの方が多く溶融され、アークホ
ーン30の突出部30bが可動接触子4の先端部4dよ
り消弧装置6の方向へ常に突出した状態が維持される。
従って、アーク20はアークホーン10へ移動、集中
し、アーク断面積の拡大を抑制し、消弧装置6の磁気作
用によりアーク20が消弧し易くなり、遮断性能が向上
するとともに接点の消耗が少なくなる。
According to this embodiment, by forming the arc horn 30 from a material having a higher melting point than the movable contact 4 as described above, when the movable contact 4 and the arc horn 30 come into contact with the arc 20, The protrusion 30b of the arc horn 30 is less likely to be melted than the tip 4d of the movable contact 4. Therefore, even in repeated current interruption, the tip 4 d of the movable contact 4 is always melted more, and the protruding portion 30 b of the arc horn 30 is moved from the tip 4 d of the movable contact 4 toward the arc extinguishing device 6. The protruding state is always maintained.
Therefore, the arc 20 moves and concentrates on the arc horn 10 to suppress the expansion of the arc cross-sectional area, the arc 20 is easily extinguished by the magnetic action of the arc extinguishing device 6, the breaking performance is improved, and the consumption of the contact is reduced. Less.

【0017】実施の形態3.図5は、この発明の実施の
形態3である回路遮断器の可動接触子導体組立部の構成
を消弧装置と共に示す平面図であり、可動接触子が開離
してアークが発生した状態を示す。図において、40は
磁性体で形成されたアークホーンあり、磁性体として
は、例えば電磁軟鉄板、珪素鋼板またはパーマロイ等の
鉄ーニッケル合金を板状にしたもの等が採用されてい
る。
Embodiment 3 FIG. 5 is a plan view showing a configuration of a movable contact conductor assembly of a circuit breaker according to a third embodiment of the present invention together with an arc extinguishing device, showing a state in which the movable contact is opened and an arc is generated. . In the figure, reference numeral 40 denotes an arc horn formed of a magnetic material. As the magnetic material, for example, an electromagnetic soft iron plate, a silicon steel plate, or a plate-like iron-nickel alloy such as permalloy is used.

【0018】この実施の形態によれば、アークホーン4
0を磁性体材料で形成することにより、アーク20がア
ークホーン40の突出部40bに移動したとき、図5に
示すように、アーク電流Cによって発生する磁束50
は、消弧板6aを通ると共にアークホーン40により多
く集中し、このアークホーン40に集中した磁束50
が、アーク20を消弧板6aの方向へ駆動する力を強め
る働きをする。これにより、アーク電圧が更に高まりア
ーク電流が弱まるので消弧し易くなり、さらに遮断性能
が優れた回路遮断器が得られる。
According to this embodiment, the arc horn 4
When the arc 20 moves to the protruding portion 40b of the arc horn 40, the magnetic flux 50 generated by the arc current C as shown in FIG.
Passes through the arc extinguishing plate 6a and concentrates more on the arc horn 40, and the magnetic flux 50 concentrated on the arc horn 40
Works to increase the force for driving the arc 20 in the direction of the arc-extinguishing plate 6a. As a result, the arc voltage is further increased and the arc current is weakened, so that the arc can be easily extinguished, and a circuit breaker having more excellent breaking performance can be obtained.

【0019】[0019]

【発明の効果】この発明は、以上説明したように構成さ
れているので、以下に示すような効果を奏する。
Since the present invention is configured as described above, it has the following effects.

【0020】各相毎の可動接触子の平板導体の間に、可
動接点が固着された側の端部より突出するアークホーン
を設けたので、アークによる接点の消耗が少なく、遮断
性能の良い回路遮断器が得られる。
Since the arc horn is provided between the flat conductors of the movable contactors for each phase and protrudes from the end on the side where the movable contact is fixed, the contact is less consumed by the arc and the circuit has a good breaking performance. A circuit breaker is obtained.

【0021】また、可動接触子の平板導体間に配置する
アークホーンを、可動接触子の材料より融点の高い材料
で形成したので、繰り返しの電流遮断による遮断性能の
低下が抑制され、さらに遮断性能の優れた回路遮断器が
得られる。
Further, since the arc horn arranged between the flat conductors of the movable contact is made of a material having a higher melting point than the material of the movable contact, a decrease in the interruption performance due to repeated current interruption is suppressed, and the interruption performance is further improved. The circuit breaker of the present invention is excellent.

【0022】また、可動接触子の平板導体間に配置する
アークホーンを、磁性体材料で形成したので、アークの
駆動力を高め、より遮断性能の向上が図れる。
Further, since the arc horn arranged between the plate conductors of the movable contact is made of a magnetic material, the driving force of the arc can be increased, and the breaking performance can be further improved.

【図面の簡単な説明】[Brief description of the drawings]

【図1】 この発明の実施の形態1である可動接触子導
体組立部の構成を消弧装置と共に示す平面図である。
FIG. 1 is a plan view showing the configuration of a movable contact conductor assembly according to Embodiment 1 of the present invention, together with an arc extinguishing device.

【図2】 図1における線A−Aに沿う要部断面図であ
る。
FIG. 2 is a cross-sectional view of a main part along line AA in FIG.

【図3】 この発明の実施の形態1である可動接触子導
体組立部を示す斜視図である。
FIG. 3 is a perspective view showing a movable contact conductor assembly according to the first embodiment of the present invention.

【図4】 この発明の実施の形態2である可動接触子導
体組立部の接触子部分を示す要部側面図である。
FIG. 4 is an essential part side view showing a contact portion of a movable contact conductor assembly according to Embodiment 2 of the present invention;

【図5】 この発明の実施の形態3である可動接触子導
体組立部の構成を消弧装置と共に示す平面図である。
FIG. 5 is a plan view showing a configuration of a movable contactor conductor assembly which is Embodiment 3 of the present invention, together with an arc extinguishing device.

【図6】 従来の可動接触子導体組立部の構成を消弧装
置と共に示す平面図である。
FIG. 6 is a plan view showing a configuration of a conventional movable contact conductor assembly together with an arc extinguishing device.

【図7】 図6における線D−Dに沿う要部断面図であ
る。
FIG. 7 is a cross-sectional view of a main part along line DD in FIG. 6;

【図8】 従来の可動接触子導体組立部を示す斜視図で
ある。
FIG. 8 is a perspective view showing a conventional movable contact conductor assembly.

【符号の説明】[Explanation of symbols]

1 固定接触子、2 固定接点、3a,3b 可動接
点、4 可動接触子、4a,4b 平板導体、4c 貫
通孔、5 支軸、6 消弧装置、10,30,40 ア
ークホーン。
Reference Signs List 1 fixed contact, 2 fixed contact, 3a, 3b movable contact, 4 movable contact, 4a, 4b plate conductor, 4c through hole, 5 support shaft, 6 arc extinguishing device, 10, 30, 40 arc horn.

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 一端に固定接点が固着された固定接触子
と、平板導体を複数枚平行に配置してそれぞれの平板導
体の一端に上記固定接点と対向する可動接点を有し、上
記平板導体の他端が軸支された可動接触子と、上記可動
接触子を上記固定接触子から開離したとき上記固定接点
と上記可動接点の間に発生するアークを消弧する消弧装
置とを各相毎に備えた回路遮断器において、上記可動接
触子の一端より上記消弧装置の方向に突出して上記平板
導体の間に保持されたアークホーンを備えたことを特徴
とする回路遮断器。
A fixed contact having a fixed contact fixed at one end; a movable contact opposed to the fixed contact at one end of each of the plurality of flat conductors arranged in parallel with each other; A movable contact having the other end pivotally supported, and an arc extinguishing device for extinguishing an arc generated between the fixed contact and the movable contact when the movable contact is separated from the fixed contact. A circuit breaker provided for each phase, comprising an arc horn projecting from one end of the movable contact toward the arc extinguishing device and held between the plate conductors.
【請求項2】 アークホーンは、可動接触子よりも高融
点の材料で形成されたことを特徴とする請求項1記載の
回路遮断器。
2. The circuit breaker according to claim 1, wherein the arc horn is formed of a material having a higher melting point than the movable contact.
【請求項3】 アークホーンは、磁性体材料で形成され
たことを特徴とする請求項1または2記載の回路遮断
器。
3. The circuit breaker according to claim 1, wherein the arc horn is formed of a magnetic material.
JP31364597A 1997-11-14 1997-11-14 Circuit breaker Expired - Fee Related JP3407102B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP31364597A JP3407102B2 (en) 1997-11-14 1997-11-14 Circuit breaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP31364597A JP3407102B2 (en) 1997-11-14 1997-11-14 Circuit breaker

Publications (2)

Publication Number Publication Date
JPH11149855A true JPH11149855A (en) 1999-06-02
JP3407102B2 JP3407102B2 (en) 2003-05-19

Family

ID=18043809

Family Applications (1)

Application Number Title Priority Date Filing Date
JP31364597A Expired - Fee Related JP3407102B2 (en) 1997-11-14 1997-11-14 Circuit breaker

Country Status (1)

Country Link
JP (1) JP3407102B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008507810A (en) * 2004-07-24 2008-03-13 アミ ドデュコ ゲゼルシャフト ミット ベシュレンクテルハフツング Arc splitter against arc chute
CN103000391A (en) * 2011-09-15 2013-03-27 西门子公司 Moving contact module
CN104051166A (en) * 2013-03-15 2014-09-17 施耐德电器工业公司 Single-pole switching unit and switchgear device comprising one such unit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008507810A (en) * 2004-07-24 2008-03-13 アミ ドデュコ ゲゼルシャフト ミット ベシュレンクテルハフツング Arc splitter against arc chute
CN103000391A (en) * 2011-09-15 2013-03-27 西门子公司 Moving contact module
CN104051166A (en) * 2013-03-15 2014-09-17 施耐德电器工业公司 Single-pole switching unit and switchgear device comprising one such unit

Also Published As

Publication number Publication date
JP3407102B2 (en) 2003-05-19

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