JPH01117039U

JPH01117039U -

Info

Publication number: JPH01117039U
Application number: JP1267188U
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図は金属板半体の正面図、
第５図は絶縁板半体の正面図、第６図は従来のも
のを示す部分断面側面図、第７図は第６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、１１１ａ，１１１ｃは
端縁、１２，１３は突起、１４は凹部である。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 is a half of the metal plate. Front view,
FIG. 5 is a front view of a half insulating plate, FIG. 6 is a partially sectional side view showing a conventional one, and FIG. 7 is a sectional view taken along the line - in FIG. 6. 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, 111a and 111c are edges, 12 and 13 are protrusions, and 14 is a recess. 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 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 on one side of each end edge of the insulating plate and the metal plate half that is in contact with the cover, and each of the protrusions is fitted. A circuit breaker characterized in that the cover is provided with a round recess so that each of the protrusions fits into the recess when the insulating plate and the metal plate half are properly assembled.