JPS587452U

JPS587452U - circuit break

Info

Publication number: JPS587452U
Application number: JP10156281U
Authority: JP
Inventors: 久常　文之; 伸示山県; 寺地　淳一; 一吉安
Original assignee: 三菱電機株式会社
Priority date: 1981-07-07
Filing date: 1981-07-07
Publication date: 1983-01-18
Also published as: JPH0218517Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来の回路しゃ断器を示し、Ａはその一部切欠
した平面図、Ｂは一部切欠した側面図、第２図は従来の
回路しゃ断器において接点間に生じたアークの様子を示
す説明図、第３図はこの考案の第１の実施例を示し、Ａ
は１対の接触子の側面図、Ｂは固定接触子の平面図、Ｃ
は固定接触子の縦断面図、Ｄは可動接触子の底面図、第
４図は圧力反射体によるアークの絞り込み効果を示す説
明図、第５図はアーク走行路によるアークの挙動を示す
説明図で、Ａは１対の接触子の側面図、Ｂは可動接触子
の平面図、Ｃは固定接触子の平面図、第６図はこの考案
の第２の実施例を示し、Ａは一部切欠した側面図、Ｂは
ＡのＨＢ−ＨＢ線より矢視方向にみた底面図、第７図は
この考案の第３の実施例を示す一部切欠した側面図、第
８図はこの考案の第４の実施例を示し、Ａは可動接触子
の側面図、Ｂは可動接触子の底面図である。２・・・固定導体、３・・・固定接点、４・・・可動導
体、５・・・可動接点、７・・・消弧板、８・・・アー
ク、１０ａ。１０ｂ・・・圧力反射体、１１・・・第１の電気接触子
、１２・・・第２の電気接触子、２０ａ、２０ｂ・・・
アーク走行路、Ｙ・・・電気的接触面を含む平面、Ｚ・
・・距離。なお、図中、同一符号は同一または相当章Ｉ
ζ分を示す。Fig. 1 shows a conventional circuit breaker, A is a partially cutaway plan view, B is a partially cutaway side view, and Fig. 2 shows the state of the arc that occurs between the contacts in the conventional circuit breaker. The explanatory diagram shown in FIG. 3 shows the first embodiment of this invention, and A
is a side view of a pair of contacts, B is a plan view of a fixed contact, and C is a side view of a pair of contacts.
is a vertical cross-sectional view of the fixed contact, D is a bottom view of the movable contact, FIG. 4 is an explanatory diagram showing the arc narrowing effect by the pressure reflector, and FIG. 5 is an explanatory diagram showing the behavior of the arc due to the arc traveling path. A is a side view of a pair of contacts, B is a plan view of a movable contact, C is a plan view of a fixed contact, and FIG. 6 shows a second embodiment of this invention; B is a bottom view taken from the HB-HB line of A in the direction of the arrow, FIG. 7 is a partially cutaway side view showing the third embodiment of this invention, and FIG. 8 is a side view of this invention. A fourth embodiment is shown, in which A is a side view of the movable contact and B is a bottom view of the movable contact. 2... Fixed conductor, 3... Fixed contact, 4... Movable conductor, 5... Movable contact, 7... Arc extinguishing plate, 8... Arc, 10a. 10b...pressure reflector, 11...first electrical contact, 12...second electrical contact, 20a, 20b...
Arc travel path, Y... plane including electrical contact surface, Z...
··distance. In addition, the same reference numerals in the figures refer to the same or corresponding chapter I.
Indicates the ζ minute.

Claims

[Scope of utility model registration request]

At least one of first and second electrical contacts having a conductor and a contact fixed thereto is formed of a high resistance material having a higher resistivity than the conductor, and the contact is made of a high-resistance material having a higher resistivity than the conductor, and the contact is made of a high-resistance material that surrounds the outer periphery of the contact. A pressure reflector is provided on the conductor, and on at least one side of the pressure reflector, an arc travel path is provided which extends in a direction away from the contact point and is more conductive than the pressure reflector. and at least one of the arc travel paths has a distance from the plane containing the electrical contact surface of the contact,
A circuit breaker whose slope increases as it moves away from the contact point.