JPH0382542U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view of a circuit breaker showing a first embodiment of the arc extinguishing device configuration according to the present invention, and FIGS. 2 and 3 are front views of the main parts of the arc extinguishing device shown in FIG. 1, respectively. 4 is a partial sectional view of a circuit breaker showing a second embodiment of the arc extinguishing chamber configuration according to the present invention, and FIGS. 5 and 6 are views of the main parts of the arc extinguishing device shown in FIG. 4. A front view and a side view, FIG. 7 is a partial sectional view of a circuit breaker showing a third embodiment of the arc extinguishing device configuration according to the present invention, and FIGS. 8, 9, 10, and 11 are respectively A front view, a side view, a perspective view, and a front sectional view of the main parts of the arc extinguishing device shown in FIG. 7, and FIG. 12 is a partial sectional view of a circuit breaker showing a fourth embodiment of the configuration of the arc extinguishing device according to the present invention. , FIG. 13 and FIG. 14 are respectively a front view and a side view of the main parts of the arc extinguishing device shown in FIG. The partial sectional views, FIGS. 16, 17, and 18 are front views of the main parts of the arc extinguisher shown in FIG. 15, respectively;
A side view and a front sectional view, FIG. 19 is a partial sectional view of a circuit breaker showing a sixth embodiment of the arc extinguishing device configuration according to the present invention, and FIGS. 20 and 21 are the arc extinguishing device shown in FIG. A front view and a side view of the main parts of the device, and FIG. 22 are partial sectional views of a circuit breaker showing a configuration example of a conventional arc extinguishing device. 3... Circuit breaker container, 4... Fixed contact, 7...
Movable contactor, 13... Arc-extinguishing plate, 15, 30, 31
,33,34,40,41,44,45,47,
48, 51, 52... side wall, 27... shielding plate, 2
7a...hole, 30a, 31a, 33a, 34a...
...Protrusion, 32, 35, 43, 46, 50, 53...
...Arcing chamber, 42...Metal rod, 49...Metal pipe, 1
00 , 101 , 102 , 103 , 104 , 105
, 106 ... Arc extinguishing device.

Claims (1)

[Claims for Utility Model Registration] 1. A fixed contact and a movable contact that move toward and away from each other, and a plurality of arc-extinguishing plates arranged in parallel at intervals, with insulators attached from both sides in the width direction of the arc-extinguishing plates. an arc extinguishing chamber which is sandwiched between side walls and into which the arc generated between the two contacts is driven and inserted when the current is interrupted; and an interrupter having a number of holes formed therein to accommodate both the contacts and the arc extinguishing chamber. In an arc extinguishing device for a circuit breaker, the shielding plate is attached to a rear opening of an arc extinguishing chamber of a container and partitions the inside and outside of the container into a communicating state. An arc extinguishing device for a circuit breaker, characterized in that a plurality of rod-shaped projections made of an insulating material extend from at least one side across a space between an arc extinguishing chamber and a shielding plate. 2 A fixed contact and a movable contact that move toward and away from each other, and a plurality of arc-extinguishing plates arranged parallel to each other at intervals are sandwiched between side walls made of an insulating material from both sides in the width direction of the arc-extinguishing plates. An arc extinguishing chamber into which the arc generated between the two contacts is driven and inserted when the current is interrupted; and a rear side of the arc extinguishing chamber of the circuit breaker container, which has a large number of holes and accommodates both the contacts and the arc extinguishing chamber. An arc extinguishing device for a circuit breaker, comprising: a shielding plate attached to an opening to partition the inside and outside of the container into a communicating state; An arc extinguishing device for a circuit breaker, characterized in that a plurality of metal rods or metal tubes extending parallel to the plate are sandwiched between both side walls of an arc extinguishing chamber.