JPH0332330U

JPH0332330U -

Info

Publication number: JPH0332330U
Application number: JP9305489U
Authority: JP
Priority date: 1989-08-08
Filing date: 1989-08-08
Publication date: 1991-03-28
Anticipated expiration: 2004-08-08
Also published as: JP2523937Y2

Description

[Brief explanation of drawings]

第１図ないし第７図は本考案による電磁接触器
の消弧装置構成の第１の実施例を示す図であつて
、第１図は電磁接触器の縦断面図、第２図は第１
図のＡ−Ａ線に沿う断面図、第３図は接点開離途
中の要部縦断面図、第４図は第３図のＢ−Ｂ線に
沿う断面図、第５図は接点開離完了時の要部断面
図、第６図は第５図のＣ−Ｃ線に沿う断面図、第
７図は消弧室の分解斜視図、第８図は本考案の第
２の実施例による消弧室の構成を示す分解斜視図
、第９図は第１の実施例と従来装置とのアーク滞
溜時間比較線図、第１０図ないし第１７図は従来
の電磁接触器の消弧装置の構成例を示す図であつ
て、第１０図は電磁接触器の縦断面図、第１１図
は第１０図のＤ−Ｄ線に沿う断面図、第１２図は
第１０図のＥ矢視図、第１３図は接点開離途中の
要部断面図、第１４図は第１３図のＦ−Ｆ線に沿
う断面図、第１５図は接点開離完了時の要部断面
図、第１６図は第１５図のＧ−Ｇ線に沿う断面図
、第１７図は消弧室の分解斜視図、第１８図は消
弧装置におけるアークの駆動原理を示す説明図、
第１９図は本考案の消弧装置におけるアーク駆動
力増大の原理を示す説明図である。１１……固定接触子、１２……固定接点、１５
……可動接点、１６……可動接触子、２０，６０
……消弧装置、３１，６１……絶縁ケース、４０
，７０……消弧装置、５０……アーク、６４ａ…
…板状グリツド、６４ｂ……コ字状グリツド、６
４ｃ……グリツド板。 1 to 7 are diagrams showing a first embodiment of the configuration of an arc extinguishing device for an electromagnetic contactor according to the present invention, in which FIG. 1 is a longitudinal cross-sectional view of the electromagnetic contactor, and FIG.
A cross-sectional view taken along line A-A in the figure, Figure 3 is a longitudinal cross-sectional view of the main part during contact opening, Figure 4 is a cross-sectional view taken along line B-B in Figure 3, and Figure 5 shows contact opening. 6 is a sectional view taken along line C-C in FIG. 5, FIG. 7 is an exploded perspective view of the arc extinguishing chamber, and FIG. 8 is a second embodiment of the present invention. An exploded perspective view showing the configuration of the arc extinguishing chamber, FIG. 9 is a comparison diagram of arc retention time between the first embodiment and the conventional device, and FIGS. 10 to 17 are the conventional arc extinguishing device of the electromagnetic contactor. FIG. 10 is a longitudinal sectional view of the electromagnetic contactor, FIG. 11 is a sectional view taken along line D-D in FIG. 10, and FIG. 12 is a view taken in the direction of arrow E in FIG. 10. Figure 13 is a cross-sectional view of the main part during contact opening, Figure 14 is a cross-sectional view taken along the line F-F in Figure 13, Figure 15 is a cross-sectional view of the main part when the contact is completed, and Fig. 16 The figure is a sectional view taken along line GG in FIG. 15, FIG. 17 is an exploded perspective view of the arc extinguishing chamber, and FIG. 18 is an explanatory diagram showing the principle of driving the arc in the arc extinguishing device.
FIG. 19 is an explanatory diagram showing the principle of increasing arc driving force in the arc extinguishing device of the present invention. 11... Fixed contact, 12... Fixed contact, 15
...Movable contact, 16...Movable contact, 20 , 60
... Arc extinguishing device, 31, 61 ... Insulation case, 40
, 70 ... arc extinguishing device, 50... arc, 64a...
... Plate grid, 64b... U-shaped grid, 6
4c...grid board.

Claims

[Claims for Utility Model Registration] 1. Two fixed contacts each having a fixed contact fixed to the outer surface of one of the two opposing sides of a plate conductor bent in a U-shape. A pair of fixed contacts arranged with their central sides facing each other with a distance between them and the fixed contacts facing the same side, and a plate-shaped conductor having movable contacts at both ends thereof in a direction perpendicular to the plate surface. a movable contact that moves to bridge and open the two fixed contacts; and a movable contact that is disposed on both sides of the movable contact in the direction between the movable contacts, and that generates electricity between the fixed and movable contacts when current is interrupted. In an arc extinguishing device for an electromagnetic contactor, an arc extinguishing chamber for extinguishing an arc driven to both sides of the movable contact in the direction between the movable contacts is housed in an insulating case, wherein each of the arc extinguishing chambers The fixed contact and the movable contact that approaches and separates from the fixed contact are sandwiched between the two opposing sides, and the center side is parallel to the moving direction of the movable contact. A U-shaped grid made of a ferromagnetic material arranged perpendicularly to the direction between the movable contacts, and a U-shaped grid formed in a flat plate shape and arranged between two opposing faces of the U-shaped grid parallel to the two faces and spaced apart from each other. 1. An arc extinguishing device for an electromagnetic contactor, characterized in that it is constructed using one or more plate-shaped grids. 2. Two fixed contacts each having a fixed contact fixed to the outer surface of one of the two opposing sides of a plate conductor bent in a U-shape are placed with the center side of the U-shape back to back. a pair of fixed contacts arranged to face each other and with the fixed contacts facing on the same side; and a plate-shaped conductor with movable contacts at both ends, which move in a direction perpendicular to the plate surface to connect the two fixed contacts. A movable contactor that bridges and opens the contactors, and a movable contactor arranged on both sides of the movable contactor in the direction between the movable contacts, which is generated between both the fixed and movable contacts when current is cut off, In an arc extinguishing device for an electromagnetic contactor, which includes arc extinguishing chambers for extinguishing arcs driven to both sides in an insulating case, each of the arc extinguishing chambers has an L-shaped surface. A ferromagnetic material that is arranged parallel to the moving direction of the movable contact and the direction between the movable contacts, sandwiching the fixed contact and the movable contact that approaches and separates from the fixed contact from both sides on a surface forming one side of the L-shape. consisting of 2
grid plate, and one or more plate-shaped grids formed in a flat plate shape and arranged between the two grid plates in parallel with the grid plate and spaced apart from each other. Features: Electromagnetic contactor arc extinguishing device.