JPS6320345U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はこの考案の一実施例を示す部分縦断拡
大図、第２図は従来装置を示す縦断側面図、第３
図はオン状態を示す第２図の要部拡大図、第４図
はオフ状態を示す第３図と同じ図、第５図はトリ
ツプ状態を示す第３図と同じ図、第６図は反発状
態を示す第３図と同じ図、第７図は第１のコンタ
クトアームのリセツト途中を示す部分縦断拡大図
である。 図において、４は自動引きはずし装置、７は可
動子、１０はコンタクトアーム、１０ａは第１の
コンタクトアーム、１０ｂは第２のコンタクトア
ーム、１１は第１のピン、１２は支軸、１４はガ
イド孔、１４Ｃはピン摺動面、１５は長孔、１６
は第２のピン、１７Ａはばねである。なお、各図
中同一符号は同一または相当部分を示す。 Fig. 1 is a partially enlarged longitudinal sectional view showing an embodiment of this invention, Fig. 2 is a longitudinal sectional side view showing a conventional device, and Fig. 3 is a longitudinal sectional enlarged view showing an embodiment of this invention.
The figure is an enlarged view of the main part of Figure 2 showing the ON state, Figure 4 is the same as Figure 3 showing the OFF state, Figure 5 is the same as Figure 3 showing the trip state, and Figure 6 is the repulsion. FIG. 7, which is the same as FIG. 3 showing the state, is a partially enlarged longitudinal sectional view showing the first contact arm in the middle of being reset. In the figure, 4 is an automatic tripping device, 7 is a mover, 10 is a contact arm, 10a is a first contact arm, 10b is a second contact arm, 11 is a first pin, 12 is a support shaft, and 14 is a Guide hole, 14C is pin sliding surface, 15 is long hole, 16
is the second pin, and 17A is the spring. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 自動引きはずし装置によるしや断動作とは無関
係に、大電流通電による電磁反発力により可動子
を離反させて限流を行なうようにした回路しや断
器であつて、前記可動子を保持するコンタクトア
ームが互いに回転可能に支持される第１のコンタ
クトアームと第２のコンタクトアームとに分割さ
れ、かつ開閉機構が連繋される前記第１のコンタ
クトアームに設けられて開閉方向に延びるガイド
孔と、前記可動子が第１のピンにより支持される
前記第２のコンタクトアームに設けられて前記ガ
イド孔と交差する方向に延びる長孔と、この長孔
と前記ガイド孔とに跨がつて係合する第２のピン
と、この第２のピンを付勢するばねとを有する回
路しや断器において、前記ばねに付勢されて前記
第２のピンが摺動する前記ガイド孔のピン摺動面
を消弧室側に位置させると共に、前記ガイド孔の
孔幅を前記第２のピンとの間にすき間ができる程
度に大きくしたことを特徴とする回路しや断器。 A circuit breaker that holds the movable element and separates the movable element by electromagnetic repulsive force due to the application of a large current to perform current limiting, regardless of the breaking operation by an automatic tripping device. The contact arm is divided into a first contact arm and a second contact arm that are rotatably supported by each other, and a guide hole extending in the opening and closing direction is provided in the first contact arm to which an opening and closing mechanism is linked; , the movable element is engaged with an elongated hole provided in the second contact arm supported by the first pin and extending in a direction intersecting the guide hole, and straddles the elongated hole and the guide hole. A pin sliding surface of the guide hole on which the second pin slides when being urged by the spring in the circuit and disconnector having a second pin that presses the second pin and a spring that presses the second pin. is located on the arc extinguishing chamber side, and the width of the guide hole is made large enough to create a gap between the guide hole and the second pin.