JPH01117037U

JPH01117037U -

Info

Publication number: JPH01117037U
Application number: JP1266588U
Authority: JP
Priority date: 1988-02-01
Filing date: 1988-02-01
Publication date: 1989-08-08

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例を示す部分断面側
面図、第２図は第１図を左から見た図、第３図イ
は第２図のエンドプレートを示す正面図、第３図
ロは第３図イの平面図、第４図は絶縁板の正面図
、第５図イは金属板半体の正面図、第５図ロは第
５図イの線ロ―ロの断面図、第６図は絶縁板半体
の正面図、第７図は第２図のものより定格電流の
小さいものを示す第２図と同じ図、第８図イは第
７図のエンドプレートを示す正面図、第８図ロは
第８図イの平面図、第９図は従来のものを示す部
分断面側面図、第１０図は第９図の線―の断
面図である。図において、１は遮断器ケース、１ａはベース
、１ｂはカバー、２は可動子、２ａは可動接点、
３は固定接点、４は端子板、５は消弧室、８，８
は両側溝、１１はエンドプレート、１１Ａは絶縁
板、１１Ｂは絶縁板半体、１１Ｃは金属板半体、
１１ａ，１１ｂ，１１ｃは孔、１１ａ，１１ｂ，
１１ａ，１１ｃは排気孔、１２ａ，１２ｂ，１３
は突起、１４ａ，１４ｂは切欠きである。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 sectional side view showing an embodiment of this invention, Fig. 2 is a view of Fig. 1 seen from the left, Fig. 3 A is a front view showing the end plate of Fig. 2, Fig. 3 B is a plan view of Fig. 3 A, Fig. 4 is a front view of the insulating plate, Fig. 5 A is a front view of the metal plate half, and Fig. 5 B is a cross-sectional view of the line Ro-Ro of Fig. 5 A. , Fig. 6 is a front view of the insulating plate half, Fig. 7 is the same as Fig. 2, showing one with a smaller rated current than the one in Fig. 2, and Fig. 8 A shows the end plate of Fig. 7. 8B is a plan view of FIG. 8A, FIG. 9 is a partially sectional side view showing the conventional one, and FIG. 10 is a sectional view taken along the line - in FIG. 9. In the figure, 1 is a circuit breaker case, 1a is a base, 1b is a cover, 2 is a mover, 2a is a movable contact,
3 is a fixed contact, 4 is a terminal board, 5 is an arc extinguishing chamber, 8,8
are grooves on both sides, 11 is an end plate, 11A is an insulating plate, 11B is an insulating plate half, 11C is a metal plate half,
11a, 11b, 11c are holes; 11a, 11b,
11a, 11c are exhaust holes, 12a, 12b, 13
are protrusions, and 14a and 14b are notches. In addition,
The same reference numerals in each figure indicate the same or corresponding parts.

Claims

[Scope of Claim for Utility Model Registration] A circuit breaker case consisting of a base and a cover, a movable element located within the circuit breaker case and connected to the opening/closing mechanism, and a movable element disposed facing the movable contact of the movable element. a terminal plate that directly or indirectly holds the fixed contact and whose free end side protrudes from the end of the circuit breaker case; and an arc extinguishing chamber that extinguishes an arc generated between the two contacts; A circuit breaker comprising a plurality of exhaust holes for discharging exhaust gas from the arc extinguishing chamber to the outside, and an end plate that is fitted into grooves on both sides of the circuit breaker case and closes an end of the circuit breaker case. In the device, the end plate includes an insulating plate having a hole that is approximately half the length of the exhaust hole, and an insulating plate that is disposed along the side of the insulating plate that contacts the terminal plate and has a hole that is approximately half the length of the exhaust hole. an insulating plate half having a hole forming a hole; and an insulating plate half having a shape that becomes a size commensurate with the insulating plate when combined with the insulating plate half, and being arranged along the insulating plate and approximately half of the exhaust hole. a metal plate half having a hole forming a length, and further provided with a protrusion projecting in the length direction at one corner of the metal plate half, and when the metal plate half is reversed in the length direction. A notch is provided in the insulating plate half to receive the protrusion, and when the end plate is assembled, the metal is more easily disposed when the protrusion is on the cover side than when the protrusion is fitted into the notch. A circuit breaker characterized in that a combined length of the plate half and the insulating plate half is increased by the length of the protrusion.