JPS62139024U

JPS62139024U -

Info

Publication number: JPS62139024U
Application number: JP2673386U
Authority: JP
Priority date: 1986-02-26
Filing date: 1986-02-26
Publication date: 1987-09-02
Also published as: JPH0446331Y2

Description

[Brief explanation of drawings]

第１図ａ，ｂはこの考案の一実施例に係わる固
定接触子を拡大して示し、それぞれａは平面図、
ｂは側面図、第２図ａ，ｂはこの発明の一実施例
に係わるアークランナを拡大して示し、それぞれ
ａは平面図、ｂはａの―線による断面図、第
３図は第１図および第２図にその一部を示すこの
考案の一実施例による電磁接触器におけるアーク
の消弧プロセスを説明する説明図、第４図はこの
考案の他の実施例におけるアークの消弧プロセス
を説明する説明図である。第５図は従来の電磁接
触器の一部を切り欠いて内部を示す断面図、第６
図は第５図に示す転流電極を拡大して示す斜視図
、第７図ａ，ｂは第５図に示す固定接触子を拡大
して示し、それぞれａは平面図、ｂは側面図、第
８図は第１図に示す従来の電磁接触器におけるア
ークの消弧プロセスを説明する説明図である。図において、６は可動接触子、６Ａは可動接点
、８は固定接触子、８Ａは固定接点、８Ｃは接点
接合部、８Ｄは固定部、８Ｅは溝、１３は金属消
弧板、１４はアークランナ、１４Ａは切り欠き部
、１４Ｂは自由端、１４Ｃはアーク走行部、１５
は転流電極である。なお、各図中同一符号は同一
または相当部分を示すものとする。 Figures 1a and 1b are enlarged views of a fixed contact according to an embodiment of this invention, and a is a plan view, and FIGS.
2b is a side view, FIGS. 2a and 2b are enlarged views of an arc runner according to an embodiment of the present invention, a is a plan view, b is a sectional view taken along the line ``a'', and FIG. 3 is a sectional view of FIG. 1. FIG. 2 is an explanatory diagram illustrating the arc extinguishing process in an electromagnetic contactor according to one embodiment of the invention, a part of which is shown in FIG. It is an explanatory diagram to explain. Figure 5 is a cross-sectional view showing the inside of a conventional electromagnetic contactor, with part of it cut away.
The figure is an enlarged perspective view of the commutation electrode shown in Fig. 5, and Figs. 7a and b are enlarged views of the fixed contact shown in Fig. 5, where a is a plan view, b is a side view, FIG. 8 is an explanatory diagram illustrating an arc extinguishing process in the conventional electromagnetic contactor shown in FIG. 1. In the figure, 6 is a movable contact, 6A is a movable contact, 8 is a fixed contact, 8A is a fixed contact, 8C is a contact joint, 8D is a fixed part, 8E is a groove, 13 is a metal arc extinguishing plate, and 14 is an arc runner. , 14A is a notch portion, 14B is a free end, 14C is an arc running portion, 15
is a commutating electrode. Note that the same reference numerals in each figure indicate the same or corresponding parts.

補正昭６１．６．１１実用新案登録請求の範囲を次のように補正する
。Amendment June 11, 1986 The scope of claims for utility model registration is amended as follows.

【実用新案登録請求の範囲】 (1) 固定接触子と、この固定接触子に接合され
た固定接点と、上記固定接点に対向して設けられ
、上記固定接点と接離可能な可動接点と、この可
動接点が接合される可動接触子と、上記両接点の
開臨時に上記両接点間に生じたアークを消弧する
ための金属消弧板とを備える電力開閉器において
、上記固定接触子は、接点接合部とこの接点接合
部と一体に形成されアーク走行方向に延在する固
定部とを有し、上記接点接合部をブロツクで形成
してその接離方向の長さを上記固定部における接
離方向の長さより大きく形成し、かつ、上記固定
接触子の電流路がアーク走行方向に折り返えすよ
うに上記ブロツクに溝を設けたことを特徴とする
電力開閉器。(2) 固定接点と可動接点の開離時に上記可動接
点が通過できる切り欠き部と自由端とを有すると
共に、上記固定接点と上記固定接触子との接合面
よりも上記可動接点側に位置するアーク走行部を
有するアークランナを固定接触子に備えたことを
特徴とする実用新案登録請求の範囲第１項記載の
電力開閉器。[Scope of Claim for Utility Model Registration] (1) A fixed contact, a fixed contact joined to the fixed contact, a movable contact provided opposite to the fixed contact and capable of coming into contact with and separating from the fixed contact, In a power switch comprising a movable contact to which the movable contact is joined, and a metal arc extinguishing plate for extinguishing an arc generated between the two contacts when the two contacts are opened, the fixed contact is It has a contact joint and a fixed part that is formed integrally with the contact joint and extends in the arc running direction, and the contact joint is formed of a block and the length of the contact joint in the contact and separation direction is set at the fixed part. A power switch, characterized in that the block is provided with a groove that is larger than the length in the approaching and separating directions, and is formed so that the current path of the fixed contact is turned back in the arc traveling direction. (2) It has a notch and a free end through which the movable contact can pass when the fixed contact and the movable contact are separated, and is located closer to the movable contact than the joint surface between the fixed contact and the fixed contact. A power switch according to claim 1, wherein the fixed contact is equipped with an arc runner having an arc running portion.

Claims

[Scope of Claim for Utility Model Registration] (1) A fixed contact, a fixed contact joined to the fixed contact, a movable contact provided opposite to the fixed contact, and a fixed contact joined to the movable contact. is,
In a power switch comprising a movable contact that can make contact with and separate from the fixed contact, and a metal arc-extinguishing plate for extinguishing an arc generated between the two contacts when the two contacts are opened, the fixed contact is It has a contact joint and a fixed part that is formed integrally with the contact joint and extends in the arc running direction, and the contact joint is formed of a block and the length of the contact joint in the contact and separation direction is set at the fixed part. A power switch, characterized in that the block is provided with a groove that is larger than the length in the approaching and separating directions, and is formed so that the current path of the fixed contact is turned back in the arc running direction. (2) The fixed contact has a notch and a free end through which the movable contact can pass when the fixed contact and the movable contact are opened, and the movable A power switch according to claim 1, which is characterized by comprising an arc runner having an arc running portion located on the contact side.