JPH0935608A - Circuit breaker - Google Patents
Circuit breakerInfo
- Publication number
- JPH0935608A JPH0935608A JP18238695A JP18238695A JPH0935608A JP H0935608 A JPH0935608 A JP H0935608A JP 18238695 A JP18238695 A JP 18238695A JP 18238695 A JP18238695 A JP 18238695A JP H0935608 A JPH0935608 A JP H0935608A
- Authority
- JP
- Japan
- Prior art keywords
- side plate
- contact
- circuit
- plate
- shaped link
- 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]
【産業上の利用分野】この発明は、配線用遮断器や漏電
遮断器などの回路遮断器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit breaker such as a wiring breaker or an earth leakage breaker.
【0002】[0002]
【従来の技術】回路遮断器は、電気回路を手動で開閉し
たり、電気回路に過電流が流れたときに電気回路を自動
的に開成させるものである。図4は、従来の回路遮断器
の構成を示す側面図である。回路遮断器の外側の絶縁ケ
ースは省き、絶縁ケース内部に収納されたものだけを側
面から見た図である。接点8が、板ばね9の先端に設け
られた可動接点8Aと、板ばね10の先端に設けられた
固定接点8Bよりなっている。図4では、可動接点8A
と固定接点8Bとが互いに接触し、接点8が閉成の状態
になっている。第一側板7Aおよび第二側板7Bよりな
るサイドプレート7は、その上部で軸5を介して操作ハ
ンドル1の固定金具4を回動自由に支持している。操作
ハンドル1と固定金具4とは、互いに一体になってい
る。サイドプレート7は、また、下部に形成された軸穴
16にトリップクロスバー2の軸2Aを貫通させること
によってトリップクロスバー2も回動自由に支持してい
る。なお、トリップクロスバー2は、常時は図示されて
いないスプリングによって反時計方向に付勢されてい
る。2. Description of the Related Art A circuit breaker is one for manually opening and closing an electric circuit or automatically opening an electric circuit when an overcurrent flows through the electric circuit. FIG. 4 is a side view showing the configuration of a conventional circuit breaker. It is the figure which looked at the one housed inside the insulating case from the side, omitting the insulating case outside the circuit breaker. The contact 8 includes a movable contact 8A provided at the tip of the leaf spring 9 and a fixed contact 8B provided at the tip of the leaf spring 10. In FIG. 4, the movable contact 8A
And the fixed contact 8B contact each other, and the contact 8 is in a closed state. The side plate 7 composed of the first side plate 7A and the second side plate 7B rotatably supports the fixing fitting 4 of the operation handle 1 via the shaft 5 at the upper portion thereof. The operation handle 1 and the fixing bracket 4 are integrated with each other. The side plate 7 also rotatably supports the trip crossbar 2 by allowing the shaft 2A of the trip crossbar 2 to pass through a shaft hole 16 formed in the lower portion. The trip crossbar 2 is normally urged counterclockwise by a spring (not shown).
【0003】図6は、図4のサイドプレ−ト7だけを取
り出して示した斜視図である。サイドプレ−ト7が、下
板19を介して互いに平行に立つ第一側板7Aと第二側
板7Bよりなる。この第一および第二の側板7A,7B
は、一枚の金属板をU字状に折り曲げて形成されたもの
である。側板7A,7Bの上部には軸穴17が設けられ
ているとともに、奥行き下部には、一方が開口した軸穴
16が設けられている。さらに、第一側板7Aには長穴
14が設けられている。軸穴17には、図4の固定金具
4を回動自由に支持する軸5が貫通する。また、前述し
たように、軸穴16には図4のトリップクロスバー2の
軸2Aが貫通する。FIG. 6 is a perspective view showing only the side plate 7 shown in FIG. The side plate 7 is composed of a first side plate 7A and a second side plate 7B which stand in parallel with each other with a lower plate 19 interposed therebetween. The first and second side plates 7A, 7B
Is formed by bending a single metal plate into a U shape. A shaft hole 17 is provided in the upper portions of the side plates 7A and 7B, and a shaft hole 16 having one opening is provided in the lower portion of the depth. Further, an elongated hole 14 is provided in the first side plate 7A. A shaft 5 that rotatably supports the fixing member 4 of FIG. 4 penetrates the shaft hole 17. Further, as described above, the shaft 2A of the trip crossbar 2 of FIG. 4 penetrates the shaft hole 16.
【0004】図4に戻り、爪部6は耳辺11を備え、こ
の耳辺11と固定金具4とがU字リンク13を介して連
結されている。爪部6は、その左端がトリップクロスバ
ー2側から突出した係合部2Bに当接して係合してい
る。爪部6が開閉部12を下方へ押圧することによって
板ばね9が下方へ押され、接点8が閉成される。図7
は、図4のB矢視図である。U字リンク13は、その上
端が操作ハンドル1の固定金具4を貫通し、下端は耳辺
11を貫通している。さらに、U字リンク13の下端
は、第一側板7Aの長穴も貫通している。Returning to FIG. 4, the claw portion 6 has an edge 11 and the edge 11 and the fixing member 4 are connected via a U-shaped link 13. The left end of the claw portion 6 abuts on and engages with the engaging portion 2B protruding from the trip crossbar 2 side. When the claw portion 6 pushes the opening / closing portion 12 downward, the leaf spring 9 is pushed downward, and the contact 8 is closed. Figure 7
FIG. 5 is a view on arrow B in FIG. 4. The U-shaped link 13 has its upper end penetrating the fixing bracket 4 of the operation handle 1 and its lower end penetrating the edge 11. Further, the lower end of the U-shaped link 13 also penetrates the elongated hole of the first side plate 7A.
【0005】図5は、図4を第一側板7A側から見た側
面図である。第一側板7Aの長穴14にU字リンク13
の下端が貫通することにより、長穴14がU字リンク1
3のガイドとなっている。図5は、接点8を手動で開成
するには、操作ハンドル1を軸5を中心にして矢印C方
向へ回動させる。それによって、固定金具4がU字リン
ク13を介して爪部6の耳辺11を持ち上げるので開閉
部12も上がる。したがって、可動接点8Aが板ばね9
とともに上がり接点8が開成状態になる。一方、電気回
路に過電流が流れると、図示されていない電磁石装置が
励磁され、その電磁力によってトリップクロスバー2が
軸2Aを中心にしてを矢印D方向へ回動する。それによ
って、爪部6の左端がトリップクロスバー2の係合部2
Bから外れる。それにつれて、トグルリンク15が爪部
6を持ち上げるので、開閉部12も上がる。したがっ
て、可動接点8Aが板ばね9とともに上がり接点8が開
成状態になる。FIG. 5 is a side view of FIG. 4 viewed from the first side plate 7A side. The U-shaped link 13 is provided in the elongated hole 14 of the first side plate 7A.
As the lower end of the U-shaped link penetrates,
It is a guide for 3. In FIG. 5, in order to manually open the contact 8, the operation handle 1 is rotated about the shaft 5 in the direction of arrow C. As a result, the fixing bracket 4 lifts the edge 11 of the claw portion 6 via the U-shaped link 13, so that the opening / closing portion 12 also rises. Therefore, the movable contact 8A is
At the same time, the rising contact 8 is opened. On the other hand, when an overcurrent flows in the electric circuit, an electromagnet device (not shown) is excited and the electromagnetic force causes the trip crossbar 2 to rotate in the direction of arrow D about the shaft 2A. As a result, the left end of the claw 6 is engaged with the engaging portion 2 of the trip crossbar 2.
Remove from B. Along with that, the toggle link 15 lifts the claw portion 6, so that the opening / closing portion 12 also rises. Therefore, the movable contact 8A rises together with the leaf spring 9, and the contact 8 is opened.
【0006】[0006]
【発明が解決しようとする課題】しかしながら、前述し
たような従来の装置は、接点が閉成状態のときに、誤っ
てなおも手動で操作ハンドルを閉成の方向に倒そうとす
ると、接点が開成しその後の再閉成が不可能になるとい
う問題があった。図8は、図4の状態にある操作ハンド
ル1を手動で無理に閉成の方向に倒そうとしたときの側
面図である。装置の接点8が閉成状態にあり、この状態
で操作ハンドル1をなおも矢印E方向に倒そうとしたと
する。すると、U字リンク13が長穴14の下端部を無
理に下方に押すので、第一側板7Aが変形する。それに
よって、爪部6が、左下方向へずれトリップクロスバー
2の係合部2Bから外れやすくなる。However, in the conventional device as described above, when the contact is closed and the operation handle is mistakenly manually pushed in the closing direction, the contact is closed. There was a problem that it could not be opened and then closed again. FIG. 8 is a side view when the operation handle 1 in the state of FIG. 4 is forcibly tilted in the closing direction by hand. It is assumed that the contact 8 of the device is in the closed state, and in this state, the operation handle 1 is still going to be tilted in the arrow E direction. Then, the U-shaped link 13 forcibly pushes the lower end portion of the elongated hole 14 downward, so that the first side plate 7A is deformed. As a result, the pawl portion 6 shifts to the lower left direction and is easily disengaged from the engaging portion 2B of the trip crossbar 2.
【0007】図9は、図8の状態にある爪部6が係合部
2Bから外れたときの側面図である。爪部6の右端部が
落ち込み、爪部6が右下がりの斜めの状態になる。それ
によって、開閉部12が上がり、可動接点8Aも上がる
ので接点8が開成状態になったままになる。爪部6が右
下がりの状態にになってしまったので、図9の状態で操
作ハンドル1をどちらに傾けてももはや爪部6を持ち上
げることができない。したがって、この装置は再閉成が
できなくなり、使用不能になってしまう。FIG. 9 is a side view when the claw portion 6 in the state of FIG. 8 is disengaged from the engaging portion 2B. The right end portion of the claw portion 6 falls, and the claw portion 6 is in a diagonally downward rightward state. As a result, the opening / closing part 12 rises and the movable contact 8A also rises, so that the contact 8 remains in the open state. Since the claw portion 6 has fallen to the lower right, the claw portion 6 can no longer be lifted no matter which direction the operation handle 1 is tilted in the state of FIG. Therefore, the device cannot be reclosed and is rendered unusable.
【0008】閉成状態にある操作ハンドル1を無理に閉
成の方向に倒そうとすることは普通には行われない。し
かし、作業者が勘違いして操作ハンドル1を誤操作して
しまうことが考えられ、しかも、操作ハンドル1が動か
ないのであせって無理にやりに大きな力で操作ハンドル
1を倒そうとすることも考えられる。このような場合に
装置が使用不能になってしまっては電気回路も死んでし
まうので、作業者が誤って操作しても装置が壊れないよ
うにしておく必要がある。[0008] It is not usual to force the operating handle 1 in the closed state to tilt in the closing direction. However, it is conceivable that the operator misunderstands and erroneously operates the operation handle 1. Moreover, since the operation handle 1 does not move, the operator may forcibly try to tilt the operation handle 1 with great force. . In such a case, if the device becomes unusable, the electric circuit will also die, so it is necessary to prevent the device from being broken even if the operator operates it by mistake.
【0009】この発明の目的は、接点が閉成状態のとき
に、誤ってなおも手動で操作ハンドルを閉成の方向に倒
そうとしても、爪部がトリップクロスバーの係合部から
外れにくい回路遮断器を提供することにある。An object of the present invention is to prevent the pawl portion from disengaging from the engaging portion of the trip crossbar even if the operating handle is accidentally manually tilted in the closing direction when the contact is closed. It is to provide a circuit breaker.
【0010】[0010]
【課題を解決するための手段】上記目的を達成するため
に、この発明によれば、電気回路に介装され固定接点お
よび可動接点よりなる接点と、互いに平行な第一側板と
第二側板を備え、第一側板に長穴が明けられたサイドプ
レートと、このサイドプレートに回動自由に支持され手
動によって接点開成または接点閉成のいずれかの方向に
倒される操作ハンドルと、サイドプレートに回動自由に
支持され、電気回路に過電流が流れたときに回動動作す
るトリップクロスバーと、接点閉成時にトリップクロス
バーの備えた係合部と係合するとともに可動接点を押圧
する爪部と、前記長穴に嵌挿され一方端が操作ハンドル
に連結されるとともに他方端が爪部に連結されたU字リ
ンクとにより構成された回路遮断器において、前記サイ
ドプレートの第二側板に接点閉成時にU字リンクに当接
する突起部を形成するものとするとよい。In order to achieve the above object, according to the present invention, there are provided a contact formed of a fixed contact and a movable contact interposed in an electric circuit, a first side plate and a second side plate which are parallel to each other. The first side plate is provided with a long hole, the side plate is rotatably supported by the side plate, and the operation handle is manually tilted in the direction of either contact opening or contact closing. A trip crossbar that is movably supported and that rotates when an overcurrent flows in an electric circuit, and a claw portion that engages with an engaging portion of the trip crossbar when the contacts are closed and presses a movable contact. And a U-shaped link having one end connected to the operation handle and the other end connected to the claw portion, and the second end of the side plate. It may be as forming a protrusion abutting the U-shaped link during contact closing in a plate.
【0011】または、かかる構成において、突起部が半
月状の凹曲面を備え、この凹曲面をU字リンクの折れ曲
がり部分に当接させてなるものしてもよい。Alternatively, in this structure, the projection may have a half-moon shaped concave curved surface, and the concave curved surface may be brought into contact with the bent portion of the U-shaped link.
【0012】[0012]
【作用】この発明の構成によれば、サイドプレートの第
二側板に突起部が形成され、この突起部は接点閉成時に
U字リンクに当接する。接点閉成時になおも接点を閉成
しようとすると、U字リンクが第一側板の長穴下端部と
第二側板の突起部との両方に当たる。従来の構成は、U
字リンクの端部が第一側板の長穴端部側だけにしか当た
っていなかった。この発明によって、U字リンクからの
力をサイドプレートの第一側板と第二側板の双方で受け
るのでサイドプレートにかかる応力が従来のものより緩
和され、接点閉成時になおも接点を閉成しようとしても
サイドプレートが変形しにくくなる。したがって、爪部
がトリップクロスバーの係合部から外れにくくなる。According to the structure of the present invention, the second side plate of the side plate is formed with the projection, and the projection contacts the U-shaped link when the contacts are closed. If the contact is still closed when the contact is closed, the U-shaped link hits both the lower end of the elongated hole of the first side plate and the protrusion of the second side plate. The conventional configuration is U
The end of the character link hits only the end of the elongated hole of the first side plate. According to the present invention, since the force from the U-shaped link is received by both the first side plate and the second side plate of the side plate, the stress applied to the side plate is relaxed as compared with the conventional one, and the contacts should still be closed when the contacts are closed. However, the side plate is less likely to be deformed. Therefore, it is difficult for the claw portion to come off from the engagement portion of the trip crossbar.
【0013】また、かかる構成において、突起部が半月
状の凹曲面を備え、この凹曲面をU字リンクの折れ曲が
り部分に当接させる。これによって、U字リンクが突起
部の凹曲面に沿って当たるので、サイドプレートの受け
る応力がより緩和され、爪部がトリップクロスバーの係
合部からさらに外れにくくなる。Further, in this structure, the protrusion has a half-moon shaped concave curved surface, and the concave curved surface is brought into contact with the bent portion of the U-shaped link. As a result, the U-shaped link abuts along the concave curved surface of the protrusion, so that the stress received by the side plate is further alleviated, and the pawl portion becomes even more difficult to disengage from the engaging portion of the trip crossbar.
【0014】[0014]
【実施例】以下、この発明を実施例に基づいて説明す
る。図1は、この発明の実施例にかかる回路遮断器の構
成を示す側面図である。第二側板7Bの第一側板7A側
の面に半月状の凹曲面を備えた突起部18(点線)が設
けられている。その他は、図4の従来の構成と同じであ
る。従来と同じ部分には同一参照符号を付け、詳細な説
明をここで繰り返すことは省略する。EXAMPLES The present invention will be described below based on examples. FIG. 1 is a side view showing a configuration of a circuit breaker according to an embodiment of the present invention. A protrusion 18 (dotted line) having a half-moon shaped concave curved surface is provided on the surface of the second side plate 7B on the first side plate 7A side. Others are the same as the conventional configuration of FIG. The same parts as those of the related art are designated by the same reference numerals, and detailed description thereof will not be repeated here.
【0015】図2は、図1のサイドプレ−ト7だけを取
り出して示した斜視図である。突起部18を第二側板7
Bから第一側板7A側へ突出させ、半月状の凹曲面18
Aが斜め上方に向かって配されている。それ以外は図6
の従来の構成と同じである。また、突起部18は、第一
側板7Aの長穴14の下端部に対向する位置に取り付け
られ、図2では図示されていないU字リンクが下がって
来たときに、U字リンクの下部の折れ曲がり部に凹曲面
18Aが沿うようにして当たる。FIG. 2 is a perspective view showing only the side plate 7 shown in FIG. The protrusion 18 to the second side plate 7
B is projected from B to the side of the first side plate 7A and has a half-moon shaped concave curved surface 18
A is arranged diagonally upward. Figure 6 otherwise
This is the same as the conventional configuration of. Further, the protrusion 18 is attached to a position facing the lower end of the elongated hole 14 of the first side plate 7A, and when a U-shaped link not shown in FIG. The concave curved surface 18A hits the bent portion so as to be along the bent portion.
【0016】図3は、図1のA矢視図である。突起部1
8が、U字リンク13下端部の折れ曲がり部の手前側に
来るように配されている以外は図6の従来の構成と同じ
である。図1に戻り、接点8が図のように閉成している
ときに、操作ハンドル1を誤ってE方向(閉成方向)の
倒そうとしても、U字リンク13が第一側板7Aの長穴
14の下端部と第二側板7Bの突起部18との両方に当
たる。U字リンク13からの力は、サイドプレート7の
第一側板7Aと第二側板7Bの双方で受ける。そのため
に、応力が従来より緩和され、サイドプレート7が変形
しにくくなる。したがって、トリップクロスバー2の係
合部2Bから爪部6が外れにくくなり、装置の使用が不
能になることがなくなる。FIG. 3 is a view on arrow A of FIG. Projection 1
8 is the same as the conventional configuration in FIG. 6 except that the U-shaped link 13 is arranged so as to come to the front side of the bent portion of the lower end portion of the U-shaped link 13. Returning to FIG. 1, when the contact 8 is closed as shown in the figure, even if the operation handle 1 is mistakenly tilted in the E direction (closing direction), the U-shaped link 13 causes the length of the first side plate 7A to increase. It hits both the lower end of the hole 14 and the protrusion 18 of the second side plate 7B. The force from the U-shaped link 13 is received by both the first side plate 7A and the second side plate 7B of the side plate 7. Therefore, the stress is relieved as compared with the related art, and the side plate 7 is less likely to be deformed. Therefore, the claw portion 6 is unlikely to come off from the engaging portion 2B of the trip crossbar 2, and the device is not disabled.
【0017】なお、図1において、突起部18の形状は
一般には任意でよく、U字リンク13に当たるようにな
っていればよい。しかし、突起部18に半月状の凹曲面
18Aを形成させておくことにより、突起部18がU字
リンク13の折り曲げ部を面で受けるのでサイドプレー
トに発生する応力が緩和される。これにより、サイドプ
レートがさらに変形しにくくなり、より大きな力で操作
ハンドル操作されても使用不能にならず装置が頑丈なも
のになる。Note that, in FIG. 1, the shape of the projection 18 may be generally arbitrary, as long as it is in contact with the U-shaped link 13. However, by forming the half-moon-shaped concave curved surface 18A on the protrusion 18, the protrusion 18 receives the bent portion of the U-shaped link 13 on its surface, so that the stress generated in the side plate is relieved. As a result, the side plate is less likely to be deformed, and even if the operation handle is operated with a larger force, the side plate is not disabled and the device becomes sturdy.
【0018】サイドプレート7を変形させないその他の
方法として、第一側板7Aの板厚を従来のものよりさら
に増すことが考えられる。しかし、サイドプレート7の
板を厚くするということは、装置の重量の増加を招くと
ともにコストも上昇すると言う問題がある。図1の突起
部18は、非常に小さく(直径が数mm程度)、かつサ
イドプレート7をプレス成形するときに同時に飛び出さ
せて成形することができるので、突起部18の付加によ
る重量の大幅増加やコストの上昇は全く無いという利点
がある。As another method for preventing the side plate 7 from being deformed, it is conceivable to further increase the thickness of the first side plate 7A as compared with the conventional one. However, making the side plate 7 thick causes a problem that the weight of the apparatus is increased and the cost is increased. The protrusion 18 in FIG. 1 is very small (diameter is about several mm) and can be formed by protruding at the same time when the side plate 7 is press-molded. Therefore, the addition of the protrusion 18 significantly increases the weight. It has the advantage that there is no increase in costs or costs.
【0019】[0019]
【発明の効果】この発明は前述のように、サイドプレー
トの第二側板に突起部が形成され、この突起部は接点閉
成時にU字リンクに当接するように配される。これによ
って、接点が閉成しているときに、操作ハンドルを誤っ
てなおも閉成方向に倒そうとしても、トリップクロスバ
ーの係合部から爪部が外れるにくくなくなり、その後の
使用が不能になることはなくなる。また、突起部を付加
しても、重量の大幅増加やコストの上昇は全く無いとい
う利点がある。As described above, according to the present invention, the projection is formed on the second side plate of the side plate, and the projection is arranged so as to contact the U-shaped link when the contacts are closed. As a result, even if the operating handle is accidentally tilted in the closing direction while the contacts are closed, it is not difficult for the claws to come off from the trip crossbar engagement part, and it cannot be used thereafter. It will never be. Further, even if the protrusion is added, there is an advantage that there is no significant increase in weight or cost.
【0020】または、かかる構成において、突起部が半
月状の凹曲面を備え、この凹曲面をU字リンクの折れ曲
がり部分に当接させる。これによって、サイドプレート
がさらに変形しにくくなり、より大きな力で操作ハンド
ル操作されても使用不能にならず装置が頑丈なものにな
る。Alternatively, in such a structure, the protrusion has a half-moon shaped concave curved surface, and the concave curved surface is brought into contact with the bent portion of the U-shaped link. As a result, the side plate is less likely to be deformed, and even if the side handle is operated with a larger force, the side plate is not disabled and the device becomes sturdy.
【図面の簡単な説明】[Brief description of drawings]
【図1】この発明の実施例にかかる回路遮断器の構成を
示す側面図FIG. 1 is a side view showing a configuration of a circuit breaker according to an embodiment of the present invention.
【図2】図1のサイドプレ−トだけを取り出して示した
斜視図FIG. 2 is a perspective view showing only the side plate shown in FIG.
【図3】図1のA矢視図FIG. 3 is a view on arrow A of FIG.
【図4】従来の回路遮断器の構成を示す側面図FIG. 4 is a side view showing a configuration of a conventional circuit breaker.
【図5】図4を第一側板7A側から見た側面図FIG. 5 is a side view of FIG. 4 viewed from the first side plate 7A side.
【図6】図4のサイドプレ−トだけを取り出して示した
斜視図FIG. 6 is a perspective view showing only the side plate shown in FIG.
【図7】図4のB矢視図FIG. 7 is a view on arrow B in FIG.
【図8】図4の状態にある操作ハンドルを手動で無理に
閉成の方向に倒そうとしたときの側面図8 is a side view when the operation handle in the state of FIG. 4 is forcibly pushed down in the closing direction by force.
【図9】図8の状態にある爪部が係合部から外れたとき
の側面図9 is a side view when the claw portion in the state of FIG. 8 is disengaged from the engaging portion.
1:操作ハンドル、2:トリップクロスバー、2B:係
合部、6:爪部、7:サイドプレート、7A:第一側
板、7B:第二側板、8:接点、8A:可動接点、8
B:固定接点、13:Uリンク、14:長穴、18:突
起部、18A:凹曲面1: Operation handle, 2: Trip crossbar, 2B: Engagement part, 6: Claw part, 7: Side plate, 7A: First side plate, 7B: Second side plate, 8: Contact point, 8A: Moving contact point, 8
B: fixed contact, 13: U-link, 14: elongated hole, 18: protrusion, 18A: concave curved surface
Claims (2)
点よりなる接点と、互いに平行な第一側板と第二側板を
備え、第一側板に長穴が明けられたサイドプレートと、
このサイドプレートに回動自由に支持され手動によって
接点開成または接点閉成のいずれかの方向に倒される操
作ハンドルと、サイドプレートに回動自由に支持され、
電気回路に過電流が流れたときに回動動作するトリップ
クロスバーと、接点閉成時にトリップクロスバーの備え
た係合部と係合するとともに可動接点を押圧する爪部
と、前記長穴に嵌挿され一方端が操作ハンドルに連結さ
れるとともに他方端が爪部に連結されたU字リンクとに
より構成された回路遮断器において、前記サイドプレー
トの第二側板に接点閉成時にU字リンクに当接する突起
部を形成したことを特徴とする回路遮断器。1. A side plate having a fixed contact and a movable contact interposed in an electric circuit, a first side plate and a second side plate which are parallel to each other, and a side plate having an elongated hole formed in the first side plate.
An operation handle that is rotatably supported by the side plate and is manually tilted in the direction of either contact opening or contact closing, and is rotatably supported by the side plate,
A trip crossbar that rotates when an overcurrent flows in the electric circuit, a claw portion that engages with an engaging portion of the trip crossbar when the contacts are closed, and presses the movable contact, and the elongated hole. A circuit breaker configured by a U-shaped link that is inserted and connected to an operation handle at one end and has a other end connected to a claw portion, wherein the second side plate of the side plate has a U-shaped link when a contact is closed. A circuit breaker, characterized in that a protrusion is formed to abut on the circuit breaker.
半月状の凹曲面を備え、この凹曲面をU字リンクの折れ
曲がり部分に当接させてなることを特徴とする回路遮断
器。2. The circuit breaker according to claim 1, wherein the protrusion has a half-moon shaped concave curved surface, and the concave curved surface is brought into contact with a bent portion of the U-shaped link.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18238695A JP3475586B2 (en) | 1995-07-19 | 1995-07-19 | Circuit breaker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18238695A JP3475586B2 (en) | 1995-07-19 | 1995-07-19 | Circuit breaker |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0935608A true JPH0935608A (en) | 1997-02-07 |
JP3475586B2 JP3475586B2 (en) | 2003-12-08 |
Family
ID=16117412
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18238695A Expired - Fee Related JP3475586B2 (en) | 1995-07-19 | 1995-07-19 | Circuit breaker |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3475586B2 (en) |
-
1995
- 1995-07-19 JP JP18238695A patent/JP3475586B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP3475586B2 (en) | 2003-12-08 |
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