JPS63167645U - - Google Patents

Description

【図面の簡単な説明】[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、１１，１３……
消弧板、１１ａ，１３ａ……切欠き、１１ｂ，１
３ｂ……脚部、１２……耐弧隔壁、１３ｃ……案
内孔、１４……間隔片、１４ａ……貫通孔、１５
……絶縁棒、２０……消弧室。 1 to 7 are views showing one 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, 13...
Arc-extinguishing plate, 11a, 13a...notch, 11b, 1
3b... Leg portion, 12... Arc-resistant bulkhead, 13c... Guide hole, 14... Spacing piece, 14a... Through hole, 15
...Insulating rod, 20... Arc extinguishing chamber.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 回路遮断器の電路導体上に端面縁より先側に間
隔をおき順次固着された主固定接点およびアーク
固定接点を備える固定接触子と、該固定接触子の
両接点と接離可能に支承された主可動接点および
アーク可動接点を備える可動接触子とのアーク接
点部を覆う消弧室であつて、前記アーク可動接点
の移動軌跡に当たる部分がＵ字状またはＶ字状に
切欠かれ、前記可動接触子の主可動接点の先端近
傍まで延びかつ上下の２個を除き案内孔が設けら
れた脚部を有する磁性材よりなる消弧板を備え、
該消弧板を複数枚間隔をおくとともに脚部に前記
案内孔と絶縁棒を介して位置決めする貫通孔を有
し前記脚部端より端部が突出する絶縁材による間
隔片を介して積重ね、この積重ねられた消弧板の
両側を耐弧隔壁により支持固定してなることを特
徴とする回路遮断器の消弧室。 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; An arc extinguishing chamber that covers an arc contact portion with a movable contact that includes a main movable contact and a movable arc contact, and a portion that corresponds to the movement locus of the movable arc contact is cut out in a U-shape or V-shape, and the movable contact an arc-extinguishing plate made of a magnetic material, which extends to the vicinity of the tip of the main movable contact of the child and has legs provided with guide holes except for the upper and lower two;
A plurality of arc extinguishing plates are arranged at intervals, and the legs have through-holes for positioning via the guide holes and the insulating rods, and are stacked via spacing pieces made of insulating material whose ends protrude from the ends of the legs, An arc extinguishing chamber for a circuit breaker characterized in that both sides of the stacked arc extinguishing plates are supported and fixed by arc-proof bulkheads.