JPS6380752U

JPS6380752U -

Info

Publication number: JPS6380752U
Application number: JP17575286U
Authority: JP
Priority date: 1986-11-14
Filing date: 1986-11-14
Publication date: 1988-05-27
Also published as: JPH0345411Y2

Description

[Brief explanation of drawings]

第１図はこの考案の一実施例の斜視図、第２図
は開極状態における消弧室の断面図、第３図は磁
性体の断面図、第４図はその―線断面図、第
５図は各種絶縁体のアーク電圧特性図、第６図は
提案例の斜視図、第７図はその開極状態における
消弧室の断面図、第８図は開極直後の消弧室の断
面図である。１…壁、２…排気孔、３…消弧室、４…固定接
点、５…固定接触子、６…可動接点、７…可動接
触子、９…アーク、１０…駆動コイル、１１…側
板、１２…背板、１３…磁性板、１４…絶縁体、
１９…肉厚部。 Fig. 1 is a perspective view of an embodiment of this invention, Fig. 2 is a cross-sectional view of the arc extinguishing chamber in the open state, Fig. 3 is a cross-sectional view of the magnetic material, Fig. 4 is a cross-sectional view taken along the line - Figure 5 shows the arc voltage characteristics of various insulators, Figure 6 is a perspective view of the proposed example, Figure 7 is a sectional view of the arc extinguishing chamber in its open state, and Figure 8 is a diagram of the arc extinguishing chamber immediately after opening. FIG. 1... Wall, 2... Exhaust hole, 3... Arc extinguishing chamber, 4... Fixed contact, 5... Fixed contact, 6... Movable contact, 7... Movable contact, 9... Arc, 10... Drive coil, 11... Side plate, 12... Back plate, 13... Magnetic plate, 14... Insulator,
19...Thick part.

Claims

[Scope of utility model registration request]

an arc extinguishing chamber having an exhaust hole in the wall; a fixed contact disposed inside the wall of the arc extinguishing chamber and having a fixed contact; a movable contact having a movable contact that moves toward and away from the fixed contact; The movable contact is linked to the excessive current flowing through the movable contact and the fixed contact to drive the movable contact in a direction away from the fixed contact, and the arc between the movable contact and the fixed contact is caused to move toward the opposite side of the movable contact and the fixed contact. a pair of drive coils that generate a magnetic flux that drives in a direction perpendicular to the direction; and a pair of side plates that are located between the movable contact, the fixed contact, and the exhaust hole, and that partially span the pair of drive coils. A U-shaped magnetic body formed by a back plate connecting the side plates, and a thick part coated on the inner surface of this magnetic body and formed on the opposite side of the side plate from the back plate, thereby forming a wall between the side plates. An arc extinguishing device comprising an insulator formed with a narrow width and generating pyrolysis gas by the heat of the arc.