JP2519601Y2 - Multi-pole circuit breaker - Google Patents
Multi-pole circuit breakerInfo
- Publication number
- JP2519601Y2 JP2519601Y2 JP5804691U JP5804691U JP2519601Y2 JP 2519601 Y2 JP2519601 Y2 JP 2519601Y2 JP 5804691 U JP5804691 U JP 5804691U JP 5804691 U JP5804691 U JP 5804691U JP 2519601 Y2 JP2519601 Y2 JP 2519601Y2
- Authority
- JP
- Japan
- Prior art keywords
- pole
- poles
- circuit breaker
- exhaust holes
- mechanical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Breakers (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この考案は多極回路遮断器の改良
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to an improvement of a multipole circuit breaker.
【０００２】[0002]
【従来の技術】図５〜図７は例えば実開昭６０−５９３
４０号公報に示された従来の多極回路遮断器を示す図で
あり、図５は正面図、図６は図５を左からみた図、図７
は図６の線VII −VII の断面図である。図において、１
はベース１０１とカバー１０２とからなる遮断器ケース
で、開閉操作機構のある機構極１Ａとその左右両側に配
置される開閉操作機構のない左右極１Ｂ，１Ｂとを有し
ている。２は固定接点２０１を有する固定子で、ベース
１０１に固着される。３は固定子２に螺合した端子ネ
ジ、４は固定接点２０１と接離する可動接点４０１を有
する可動子、５はベース１０１の溝に沿って摺動する押
板で、各極１Ａ，１Ｂの可動子４を同時に開閉動作させ
る。６は開離ばねで、可動接点４０１を固定接点２０１
から開離するために可動子４を付勢する。７は機構極１
Ａのみに設けられる］状の機構フレームで、ベース１０
１に装置されかつ開閉動作を行う機構部を支える。８は
押板５と係脱可能にピン９により係合する］状のリンク
で、機構フレーム７の長孔に沿って摺動する。１０は操
作ハンドルで、機構フレーム７にピン１１により枢着さ
れかつ端部はピン１２を介しリンク８に連結されてい
る。１３はレバーで、ピン１１で操作ハンドル１０と同
時に機構フレーム７に枢着され、押板５とリンク８との
係合部に生ずる力の分力を自動引外し装置（後述する）
と共に受けて押板５とリンク８との係合を保持する。１
４は各極１Ａ，１Ｂにそれぞれ設置される自動引外し装
置で、過電流・短絡電流が生ずると可動鉄片１５を吸着
してラッチ１６を回動させ、レバー１３との係合を解除
して自動引外し動作を行う装置である。１７は自動引外
し装置１４の一方の口出部と可動子４とを接続する可撓
銅撚線、１８は自動引外し装置１４の他方の口出部に接
続した端子板で、端子ネジ１９を有している。２０はカ
バー１０２に設けたアークガスの排気孔で、各極１Ａ，
１Ｂにそれぞれ設けられている。2. Description of the Related Art FIGS.
It is a figure which shows the conventional multi-pole circuit breaker shown by the 40th publication, FIG. 5 is a front view, FIG. 6 is the figure which looked at FIG. 5 from the left, FIG.
FIG. 7 is a sectional view taken along the line VII-VII in FIG. 6. In the figure, 1
Is a circuit breaker case composed of a base 101 and a cover 102, and has a mechanical pole 1A having an opening / closing operation mechanism and left and right poles 1B, 1B arranged on both left and right sides thereof without the opening / closing operation mechanism. A stator 2 having a fixed contact 201 is fixed to the base 101. Reference numeral 3 is a terminal screw screwed into the stator 2, 4 is a movable element having a movable contact 401 that is in contact with and separated from the fixed contact 201, and 5 is a push plate that slides along the groove of the base 101, and each pole 1A, 1B. The mover 4 is simultaneously opened and closed. Reference numeral 6 is a separation spring that moves the movable contact 401 to the fixed contact 201.
The mover 4 is urged to separate from the above. 7 is the mechanism pole 1
It is provided only on A], and the base 10
1 supports the mechanical unit that is installed in 1 and performs opening and closing operations. 8 is a pin 9 which is removably engaged with the push plate 5 by a pin 9] and slides along the long hole of the mechanism frame 7. Reference numeral 10 denotes an operation handle, which is pivotally attached to the mechanism frame 7 by a pin 11 and has an end connected to the link 8 via a pin 12. Reference numeral 13 is a lever, which is pivotally attached to the mechanism frame 7 at the same time as the operation handle 10 by a pin 11 and automatically trips a component of the force generated in the engaging portion between the push plate 5 and the link 8 (described later).
At the same time, it receives and holds the engagement between the push plate 5 and the link 8. 1
Reference numeral 4 is an automatic tripping device installed on each pole 1A, 1B. When an overcurrent or short circuit current occurs, the movable iron piece 15 is attracted to rotate the latch 16 to release the engagement with the lever 13. This is an automatic tripping device. Reference numeral 17 is a flexible copper stranded wire that connects one of the lead portions of the automatic trip device 14 and the mover 4, and 18 is a terminal plate that is connected to the other lead portion of the automatic trip device 14 and has a terminal screw 19 have. Reference numeral 20 designates an arc gas exhaust hole provided in the cover 102, each pole 1A,
1B, respectively.
【０００３】次に動作について説明する。図６に示すオ
ン状態において操作ハンドル１０をオフ操作（矢印２１
の方向）すると、リンク８が持ち上げられると同時に開
離ばね６により可動子４が開離する。このとき、可動子
４と共に押板５が押し上げられるのでピン９はレバー１
３に沿って上昇する。逆に、オン操作時にはリンク８が
操作ハンドル１０により押し下げられるので、押板５を
介して可動子４が開離ばね６に抗して閉じる。このとき
の押板５の上下動によって各極１Ａ，１Ｂが同時に開閉
する。Next, the operation will be described. In the on state shown in FIG. 6, the operation handle 10 is turned off (arrow 21
Direction), the link 8 is lifted and the mover 4 is separated by the separation spring 6 at the same time. At this time, since the push plate 5 is pushed up together with the mover 4, the pin 9 is moved to the lever 1
Rise along 3. On the contrary, since the link 8 is pushed down by the operation handle 10 during the ON operation, the mover 4 is closed against the opening spring 6 via the push plate 5. By the vertical movement of the push plate 5 at this time, the respective poles 1A and 1B are simultaneously opened and closed.
【０００４】次に図６に示すオン状態において異常電流
が流れると、自動引外し装置１４が動作してラッチ１６
とレバー１３との係合、保持が解除される。すると開離
ばね６により押板５が押し上げられ、回転するリンク７
のピン９によりレバー１３が回転し、可動子４が開離す
る。Next, when an abnormal current flows in the ON state shown in FIG. 6, the automatic trip device 14 operates and the latch 16
The engagement and holding of the lever with the lever 13 is released. Then, the push plate 5 is pushed up by the opening spring 6, and the rotating link 7
The lever 13 is rotated by the pin 9 and the mover 4 is separated.
【０００５】[0005]
【考案が解決しようとする課題】上記のような従来の多
極回路遮断器では、大電流遮断時に排気孔２０から噴出
するアークガスにより、機構極１Ａと左右極１Ｂとの排
気孔２０の間で絶縁破壊を起し、相間短絡に到る場合点
があった。In the conventional multi-pole circuit breaker as described above, the arc gas ejected from the exhaust hole 20 when a large current is interrupted causes the exhaust gas to flow between the exhaust holes 20 of the mechanical pole 1A and the left and right poles 1B. There were some cases where dielectric breakdown occurred and an interphase short circuit occurred.
【０００６】この考案はかかる問題点を解消するために
なされたもので、機構極の排気孔に比べて他の極の排気
孔を孔面積において減少させるという簡単な手段により
大電流遮断時に各極の排気孔から噴出するアークガスに
よる極間の絶縁破壊が防止できる多極回路遮断器を得る
ことを目的とする。The present invention has been made in order to solve such a problem, and the simple method of reducing the hole area of the exhaust holes of the other poles in comparison with the exhaust holes of the mechanical poles makes it possible to cut off each electrode when a large current is cut off. It is an object of the present invention to provide a multi-pole circuit breaker capable of preventing dielectric breakdown between electrodes due to arc gas ejected from the exhaust hole of.
【０００７】[0007]
【課題を解決するための手段】この考案に係る多極回路
遮断器は、機構極の排気孔に比べ他の極の排気孔を孔面
積において減少させたものである。The multi-pole circuit breaker according to the present invention is such that the exhaust holes of the other poles are reduced in hole area compared to the exhaust holes of the mechanical pole.
【０００８】[0008]
【作用】この考案においては、機構極の排気孔に比べ他
の極の排気孔を孔面積において減少させたので、機構極
と他の極との間の絶縁距離が大きくとれ、また他の極の
排気孔からのアークガスの噴出が減少して極間の絶縁抵
抗の低下が小さくなり、大電流遮断時のアークガス噴出
による絶縁破壊が防げる。In the present invention, since the exhaust holes of the other poles are reduced in hole area compared to the exhaust holes of the mechanical pole, the insulation distance between the mechanical pole and the other pole can be made large, and the other poles can be made larger. The discharge of the arc gas from the exhaust hole of 1 is reduced, and the decrease in the insulation resistance between the electrodes is reduced, so that the dielectric breakdown due to the discharge of the arc gas when the large current is interrupted can be prevented.
【０００９】[0009]
【実施例】この考案の一実施例を図１〜図４について説
明する。図１は正面図、図２は図１を左からみた図、図
３は図２の線III −III の断面図、図４は図３の線IV−
IVの断面図であり、前記従来のものと同一または相当部
分には同一符号を付して説明を省略する。図において、
２０Ａは左右極１Ｂ，１Ｂに設けたアークガスの排気孔
で、機構極１Ａの排気孔２０に比べて孔面積を減少（図
面では３分の１に）させてある。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. 1 is a front view, FIG. 2 is a view of FIG. 1 from the left, FIG. 3 is a sectional view taken along line III-III in FIG. 2, and FIG. 4 is line IV- in FIG.
FIG. 4 is a cross-sectional view of IV, in which the same or corresponding parts as those of the above-described conventional device are designated by the same reference numerals, and description thereof will be omitted. In the figure,
Reference numeral 20A denotes an arc gas exhaust hole provided in the left and right electrodes 1B and 1B, and has a hole area reduced (to one third in the drawing) as compared with the exhaust hole 20 of the mechanical electrode 1A.
【００１０】このように左右極１Ｂの排気孔２０Ａの孔
面積を減少させたので機構極１Ａと左右極１Ｂとの間の
絶縁距離が大きくとれ、また左右極１Ｂの排気孔２０Ａ
からのアークガスの噴出が減少するので、極間の絶縁抵
抗の低下が小さくなり、大電流遮断時のアークガス噴出
による絶縁破壊が防げる。なお、左右極１Ｂにおいて
は、機構極１Ａのように開閉操作機構がないので、図３
および図４に示すようにアークスペース２１が大きく遮
断能力が優れるために、排気孔２０Ａの孔面積を減少さ
せることができる。Since the hole area of the exhaust holes 20A of the left and right poles 1B is reduced in this way, the insulation distance between the mechanical pole 1A and the left and right poles 1B can be made large, and the exhaust holes 20A of the left and right poles 1B can be obtained.
Since the discharge of the arc gas from the electrode is reduced, the decrease in the insulation resistance between the electrodes is reduced, and the dielectric breakdown due to the discharge of the arc gas when the large current is interrupted can be prevented. It should be noted that the left and right poles 1B do not have an opening / closing operation mechanism like the mechanism poles 1A.
Also, as shown in FIG. 4, since the arc space 21 is large and the breaking ability is excellent, the hole area of the exhaust hole 20A can be reduced.
【００１１】上記実施例のように左右極１Ｂ，１Ｂの排
気孔２０Ａ，２０Ａをその極の中心より機構極１Ａから
離れる側の位置に設けておくと、極間の絶縁距離を有効
的に大きくすることができ、さらにアークガス噴出によ
るアークタッチを防げる。When the exhaust holes 20A, 20A of the left and right poles 1B, 1B are provided at positions away from the mechanical pole 1A with respect to the center of the poles as in the above embodiment, the insulation distance between the poles is effectively increased. It is also possible to prevent the arc touch due to the arc gas ejection.
【００１２】[0012]
【考案の効果】以上のように、この考案によれば機構極
の排気孔に比べて他の極の排気孔を孔面積において減少
させるという簡単な手段により大電流遮断時の各極の排
気孔から噴出するアークガスによる絶縁破壊が防止でき
るという効果が得られる。As described above, according to the present invention, the exhaust hole of each pole when a large current is interrupted is made by a simple means of reducing the exhaust holes of the other poles in the hole area as compared with the exhaust hole of the mechanical pole. The effect that the dielectric breakdown due to the arc gas ejected from the can be prevented can be obtained.
【図１】この考案の一実施例を示す正面図である。FIG. 1 is a front view showing an embodiment of the present invention.
【図２】図１を左からみた図である。FIG. 2 is a diagram of FIG. 1 viewed from the left.
【図３】図２の線III −III の断面図である。FIG. 3 is a sectional view taken along line III-III in FIG. 2;
【図４】図３の線IV−IVの断面図である。FIG. 4 is a sectional view taken along line IV-IV in FIG. 3;
【図５】従来のものを示す正面図である。FIG. 5 is a front view showing a conventional one.
【図６】図５を左からみた図である。FIG. 6 is a diagram of FIG. 5 viewed from the left.
【図７】図６の線VII −VII の断面図である。7 is a cross-sectional view taken along the line VII-VII of FIG.
１ 遮断器ケース １Ａ 機構極 １Ｂ 他の極 ２０，２０Ａ 排気孔 1 Circuit breaker case 1A Mechanism pole 1B Other pole 20,20A Exhaust hole
Claims (2)
ス内に配置される開閉操作機構のある機構極と、同じく
前記ケース内に配置される開閉操作機構のない他の極
と、前記ケースに設けられる前記各極の排気孔とを有す
る多極回路遮断器において、 前記機構極の排気孔に比べ、前記他の極の排気孔を孔面
積において減少させたことを特徴とする多極回路遮断
器。1. A circuit breaker case having multiple poles, a mechanical pole having an opening / closing operation mechanism arranged in the case, another pole having no opening / closing operation mechanism also arranged in the case, and the case. In the multi-pole circuit breaker having exhaust holes of each of the poles, the exhaust holes of the other poles are reduced in hole area in comparison with the exhaust holes of the mechanical poles. Circuit breaker.
構極から離れる側の位置に設けたことを特徴とする請求
項１の多極回路遮断器。2. The multi-pole circuit breaker according to claim 1, wherein the exhaust holes of the other poles are provided at a position farther from the mechanical pole than the center of the other pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5804691U JP2519601Y2 (en) | 1991-07-24 | 1991-07-24 | Multi-pole circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5804691U JP2519601Y2 (en) | 1991-07-24 | 1991-07-24 | Multi-pole circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0511286U JPH0511286U (en) | 1993-02-12 |
| JP2519601Y2 true JP2519601Y2 (en) | 1996-12-11 |
Family
ID=13072993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5804691U Expired - Lifetime JP2519601Y2 (en) | 1991-07-24 | 1991-07-24 | Multi-pole circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2519601Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07102918A (en) * | 1993-10-01 | 1995-04-18 | Goro Urushiyama | Cylinder head for engine |
-
1991
- 1991-07-24 JP JP5804691U patent/JP2519601Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0511286U (en) | 1993-02-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |