JPH0163047U

JPH0163047U -

Info

Publication number: JPH0163047U
Application number: JP1987158999U
Authority: JP
Priority date: 1987-10-15
Filing date: 1987-10-15
Publication date: 1989-04-24

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例による回路しや断
器の部分断面側面図、第２図は第１図の実施例に
おけるソルダレス端子とそのカバーとの斜視図、
第３図は前記カバーの円筒部周辺の断面図であつ
て、アークガスが流れた時のカバーの変形を示す
断面図、第４図は従来の回路しや断器の部分断面
側面図、第５図は第４図の回路しや断器のソルダ
レス端子およびそのカバーの分解斜視図である。図において、１はしや断器ケース、１Ｃは開口
、１Ｄは開口１Ｃ周囲の内壁面、２，３は開閉接
触子、４は消弧装置、Ａはアーク、６はソルダレ
ス端子、６０１はソルダレス端子６の本体、６０
４は外部導体挿入空間、６０５は頂壁、６０３は
ねじ、７は外部導体、１０はカバー、１０１はカ
バー１０の端壁、１０２，１０３は側壁、１０４
は頂壁、１０５は円筒部、１０６は突部である。
なお、各図中同一符号は同一部または相当部を示
す。 Fig. 1 is a partially sectional side view of a circuit breaker according to an embodiment of the invention, Fig. 2 is a perspective view of a solderless terminal and its cover in the embodiment of Fig. 1;
FIG. 3 is a cross-sectional view of the periphery of the cylindrical portion of the cover, showing the deformation of the cover when arc gas flows; FIG. 4 is a partial cross-sectional side view of a conventional circuit breaker; and FIG. The figure is an exploded perspective view of the solderless terminal of the circuit breaker and its cover of FIG. 4. In the figure, 1 is the edge or disconnection case, 1C is the opening, 1D is the inner wall surface around the opening 1C, 2 and 3 are the opening/closing contacts, 4 is the arc extinguisher, A is the arc, 6 is the solderless terminal, and 601 is the solderless terminal. Body of terminal 6, 60
4 is an outer conductor insertion space, 605 is a top wall, 603 is a screw, 7 is an outer conductor, 10 is a cover, 101 is an end wall of the cover 10, 102 and 103 are side walls, 104
1 is a top wall, 105 is a cylindrical portion, and 106 is a protrusion.
Note that the same reference numerals in each figure indicate the same or equivalent parts.

Claims

[Scope of Claim for Utility Model Registration] (1) A breaker case, a pair of switching contacts provided in the breaker case, and a pair of switching contacts disposed opposite to the switching contacts; an arc extinguishing device for extinguishing an arc generated between the switching contacts when the switch is opened; a terminal, and a cover made of a flexible insulating material and having an end wall covering the side facing the arc extinguishing device of the external connection terminal, both side walls covering both sides, and a top wall covering the top wall; A main body having an external conductor insertion space into which the external conductor is inserted from the opposite side to the arc extinguishing device, and a screw screwed into the top wall of the main body to tighten the external conductor into the external conductor insertion space, the cover has a cylindrical part on its top wall that covers the screw and the top part of which is housed in an opening formed in the shield case;
In a circuit or breaker configured to exhaust arc gas to the outside through the periphery of the cylindrical portion, a portion of the cylindrical portion that extends between the cylindrical portion and the top wall of the cover on the opposite side of the arc extinguishing device, and A circuit breaker characterized in that the cylindrical portion and the top wall are integrally formed with a protrusion that closely faces an inner wall surface around the opening of the breaker case. (2) A circuit breaker or circuit breaker according to claim 1 of the utility model registration, characterized in that the protrusion is provided within the range of the cylindrical portion when viewed from the arc extinguishing device side.