JPS63167647U

JPS63167647U -

Info

Publication number: JPS63167647U
Application number: JP6021287U
Authority: JP
Priority date: 1987-04-21
Filing date: 1987-04-21
Publication date: 1988-11-01

Description

[Brief explanation of the drawing]

第１図ないし第７図はこの考案による回路遮断
器の消弧室の一実施例を示す図で、第１図は実施
例の消弧室が装備された回路遮断器の縦断面図、
第２図は第１図の要部分解斜視図、第３図は第２
図の―線に沿う断面図、第４図は要部部品の
平面図、第５図は第４図の側面図、第６図は要部
部品の平面図、第７図は第６図の側面図、第８図
および第９図は従来の回路遮断器の消弧室の一例
を示す図で、第８図は斜視図、第９図は平面図、
第１０図は従来の回路遮断器の消弧室の問題点説
明図である。１……主固定接点、２……アーク固定接点、３
……固定接触子、４……主可動接点、５……アー
ク可動接点、６……可動接触子、１１……消弧板
、１１ａ……切欠き、１１ｂ……脚部、１１ｃ…
…突起、１２……耐弧隔壁、１３……間隔片、１
３ａ……貫通孔、２０……消弧室。 1 to 7 are diagrams showing an embodiment of the arc extinguishing chamber of the circuit breaker according to this invention, and FIG. 1 is a longitudinal sectional view of the circuit breaker equipped with the arc extinguishing chamber of the embodiment;
Figure 2 is an exploded perspective view of the main parts of Figure 1, and Figure 3 is an exploded perspective view of the main parts of Figure 1.
4 is a plan view of the main parts, Fig. 5 is a side view of Fig. 4, Fig. 6 is a plan view of the main parts, and Fig. 7 is a plan view of the main parts of Fig. 6. A side view, FIGS. 8 and 9 are views showing an example of an arc extinguishing chamber of a conventional circuit breaker, FIG. 8 is a perspective view, FIG. 9 is a plan view,
FIG. 10 is a diagram illustrating problems in the arc extinguishing chamber of a conventional circuit breaker. 1... Main fixed contact, 2... Arc fixed contact, 3
...Fixed contact, 4... Main movable contact, 5... Arc movable contact, 6... Movable contact, 11... Arc extinguishing plate, 11a... Notch, 11b... Leg, 11c...
... Protrusion, 12 ... Arc-proof bulkhead, 13 ... Spacing piece, 1
3a...through hole, 20...arc extinguishing chamber.

Claims

[Scope of utility model registration request]

A stationary contact comprising a main stationary contact and an arc stationary contact which are fixed in sequence on the circuit conductor of the circuit breaker at intervals beyond the edge of the end face, and the stationary contact is supported so as to be connectable to and detachable from both contacts of the stationary contact. An arc extinguishing chamber that covers an arc contact portion with a movable contact having a main movable contact and a movable arc contact, and a portion corresponding to the movement locus of the movable arc contact is cut out in a U-shape or a V-shape, and the movable contact The arc-extinguishing plate is made of a magnetic material and has a leg that extends to the vicinity of the tip of the main movable contact of the child and is provided with a protrusion on one side. The arc-extinguishing plates are stacked with spacers made of an insulating material having a through hole into which the plates are fitted, and whose ends protrude from the ends of the legs, and both sides of the stacked arc-extinguishing plates are supported and fixed by arc-proof partition walls. The arc-extinguishing chamber of the circuit breaker.