JPH01117038U

JPH01117038U -

Info

Publication number: JPH01117038U
Application number: JP1266688U
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図は
絶縁板の正面図、第４図イは金属板半体の正面図
、第４図ロは第４図イの線ロ―ロの断面図、第５
図は絶縁板半体の正面図、第６図はカバーの組立
て状況を示す部分断面側面図でイは金属板半体に
フツクが無い場合、ロは金属板半体にフツクが有
る場合、第７図は従来のものを示す部分断面側面
図、第８図は第７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、１２はフツクである。
なお、各図中同一符号は同一または相当部分を示
す。 Figure 1 is a partially sectional side view showing an embodiment of this invention, Figure 2 is a view of Figure 1 seen from the left, Figure 3 is a front view of the insulating plate, and Figure 4 A is a half of the metal plate. Figure 4B is a cross-sectional view of the line Ro-Ro in Figure 4A, Figure 5
The figure is a front view of the insulating plate half, and Figure 6 is a partial cross-sectional side view showing how the cover is assembled. FIG. 7 is a partially sectional side view showing a conventional device, and FIG. 8 is a sectional view taken along the line - in FIG. 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 and 11c are exhaust holes, and 12 is a hook.
Note that 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 an opening/closing mechanism, and a movable element disposed opposite to a 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 that forms a hole, and a shape that is combined with the insulating plate half at a position closer to the terminal board than the combined position of the base and cover and has a size commensurate with the insulating plate. and a metal plate half having a hole disposed along the insulating plate and forming approximately half the length of the exhaust hole, and a hook is provided on the metal plate half, and the hook is connected to the insulating plate. A circuit breaker characterized in that the metal plate halves are joined to the insulating plate by being locked to the plate.