JPH0186154U

JPH0186154U -

Info

Publication number: JPH0186154U
Application number: JP18308287U
Authority: JP
Priority date: 1987-11-30
Filing date: 1987-11-30
Publication date: 1989-06-07
Anticipated expiration: 2002-11-30
Also published as: JPH0614389Y2

Description

[Brief explanation of drawings]

第１図はこの考案の一実施例を示す主要部の部
分断面側面図、第２図は第１図の線―の拡大
断面図、第３図は環流板の斜視図、第４図はこの
考案の他の実施例による環流板の斜視図、第５図
は従来のものの主要部を概略的に示す部分断面側
面図、第６図は第５図のもののアークランナ装置
付近の平面図、第７図は第５図の線―の断面
図、第８図は環流板の斜視図である。図において、１は遮断器ケース、１Ｄはアーク
ランナ固定壁、２は固定接触子、３は可動接触子
、４は消弧装置、９はアークランナ装置、９０１
は第１のアークランナ、９０２は第２のアークラ
ンナ、１０Ａは環流板、１０ａは接触子側、１０
ｂは消弧装置側、１０３は内向き面、１０４は端
面、１４は第１の突起、１５は係止用突起、１６
は第２の突起、Ｌ_１は第１の間隔、Ｌ_２は第２の
間隔、Ｈは幅、Ｗは厚み、Ａはアークである。な
お、各図中同一符号は同一または相当部分を示す
。 Fig. 1 is a partially sectional side view of the main part showing an embodiment of this invention, Fig. 2 is an enlarged sectional view taken along the line - in Fig. 1, Fig. 3 is a perspective view of the circulation plate, and Fig. 4 is this figure. A perspective view of a circulation plate according to another embodiment of the invention, FIG. 5 is a partially sectional side view schematically showing the main parts of the conventional one, FIG. 6 is a plan view of the vicinity of the arc runner device of the one shown in FIG. The figure is a sectional view taken along the line - in FIG. 5, and FIG. 8 is a perspective view of the circulation plate. In the figure, 1 is a circuit breaker case, 1D is an arc runner fixed wall, 2 is a fixed contact, 3 is a movable contact, 4 is an arc extinguisher, 9 is an arc runner device, 901
is the first arc runner, 902 is the second arc runner, 10A is the circulation plate, 10a is the contact side, 10
b is the arc extinguishing device side, 103 is an inward surface, 104 is an end surface, 14 is a first projection, 15 is a locking projection, 16
is the second protrusion, _L1 is the first interval, _L2 is the second interval, H is the width, W is the thickness, and A is the arc. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims

[Scope of Claim for Utility Model Registration] (1) A circuit breaker case, a power supply side terminal and a load side terminal arranged in this circuit breaker case, a fixed contact electrically connected to one of these terminals, and this circuit breaker case. a movable contact disposed opposite to the fixed contact and electrically connected to the other terminal; an arc extinguishing device disposed opposite these contacts; the movable contact isolated from the fixed contact; An arc runner device that guides the arc generated between these contacts when they are separated to the arc extinguishing device, and an arc runner device that is installed on both sides of the arc runner device to direct the gas in front of the arc to the rear side of the arc through the back side of the side facing the arc. The arc runner device includes a pair of circulation plates that circulate the current, and the arc runner device includes a first arc runner fixedly held on an arc runner fixed wall of the circuit breaker case and extending from the fixed contact to the arc extinguishing device; is fixedly held on the circuit breaker case so as to face the arc extinguisher, and extends at least to a point adjacent to the movable contact, and has an end opposite to the arc extinguisher side end electrically connected to the other terminal. and a second arc runner, the first and second arc runners, the arc runner fixing wall, and the arc extinguishing device fixing and holding both the circulation plates in the circuit breaker case, respectively. In the circuit breaker, the width of the reflux plate is narrowed so that a first gap is created between the second arc runner and the end face of the reflux plate that is in contact with the second arc runner, and the side farther from the inward surface of the end face of the reflux plate is narrowed. is provided with a first spacer projection for maintaining the first spacing and a locking projection that engages with a side surface of the second arc runner to prevent the reflux plate from falling inward; The thickness of the reflux plate is made thin so that a second gap is formed between the inward surface of the plate and the side surface of the first arc runner, and the A circuit breaker characterized in that a second projection for a spacer is provided for maintaining a second distance. (2) The circulation plate is bent in an L-shape between the contact side and the arc extinguisher side, and the contact side of this L-shaped circulation plate abuts the arc runner fixed wall, and the arc extinguisher side abuts the arc extinguisher. in which the L-shaped circulation plate is positioned between the arc runner fixed wall and the arc extinguisher, and the first spacer protrusion is arranged between the contact side and the arc extinguisher side of the L-shaped circulation plate. and a first spacer on the contact side.
2. The circuit breaker according to claim 1, wherein a locking protrusion is integrally formed in an L-shape with the protrusion. (3) The circulation plate is bent in an L-shape between the contact side and the arc extinguisher side, and the contact side of this L-shaped circulation plate abuts the arc runner fixed wall, and the arc extinguisher side abuts the arc extinguisher. The L-shaped circulation plate is positioned between the arc runner fixed wall and the arc extinguishing device, and the first spacer projection and the locking projection are integrally formed in an L-shape. The circuit breaker according to claim 1, wherein one circuit breaker is provided on the arc extinguishing device side of the L-shaped circulation plate.