JPH0170225U

JPH0170225U -

Info

Publication number: JPH0170225U
Application number: JP1987165502U
Authority: JP
Priority date: 1987-10-29
Filing date: 1987-10-29
Publication date: 1989-05-10
Anticipated expiration: 2002-10-29
Also published as: JPH066425Y2

Description

[Brief explanation of drawings]

第１図ないし第８図はこの考案による電磁接触
器の消弧装置の一実施例を示す図で、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図は第１図のＢ矢視図、第４
図は接点開離途中の要部縦断面図、第５図は第４
図のＣ―Ｃ線に沿う断面図、第６図は接点開離完
了時の要部縦断面図、第７図は第６図のＤ―Ｄ線
に沿う断面図、第８図は要部分解斜視図、第９図
はこの考案による電磁接触器の消弧装置の他の実
施例の要部分解斜視図、第１０図は実施例と従来
装置とのアーク滞留時間比較線図、第１１図ない
し第１８図は従来の電磁接触器の消弧装置の一例
を示す図で、第１１図は電磁接触器の縦断面図、
第１２図は第１１図のＥ―Ｅ線に沿う断面図、第
１３図は第１１図のＦ矢視図、第１４図は接点開
離途中要部縦断面図、第１５図は第１４図のＧ―
Ｇ線に沿う断面図、第１６図は接点開離完了時の
要部縦断面図、第１７図は第１６図のＨ―Ｈ線に
沿う断面図、第１８図は要部分解斜視図、第１９
図は接触子装置の遮断原理図、第２０図は横軸に
時間、縦軸に電圧をとつたアーク電圧波形図であ
る。１１……固定接触子、１２……固定接点、１３
……磁極板、１４……ホルダ、１５……可動接点
、１６……可動接触子、２０……接触子装置、６
１……消弧室、６２，６３，６４……消弧グリツ
ド、６４ａ，６４ｃ……切欠き、６５……絶縁枠
、６５ａ……隔、６５ｃ……排ガス溝、６６……
絶縁蓋、７０……消弧装置。 Figures 1 to 8 are diagrams showing an embodiment of the arc extinguishing device for a magnetic contactor according to this invention. A cross-sectional view along the line, Figure 3 is a view taken in the direction of arrow B in Figure 1, and Figure 4 is a cross-sectional view along the line.
The figure is a vertical cross-sectional view of the main part in the middle of contact opening, and Figure 5 is the 4th section.
A sectional view taken along the line C-C in the figure, Fig. 6 is a longitudinal sectional view of the main part when the contact is completed, Fig. 7 is a sectional view taken along the line D-D in Fig. 6, and Fig. 8 is the main part. FIG. 9 is an exploded perspective view of main parts of another embodiment of the arc extinguishing device for an electromagnetic contactor according to this invention; FIG. 10 is a comparison diagram of arc residence time between the embodiment and a conventional device; FIG. 11 18 are diagrams showing an example of a conventional arc extinguishing device for an electromagnetic contactor, and FIG. 11 is a longitudinal cross-sectional view of the electromagnetic contactor.
Fig. 12 is a sectional view taken along line E-E in Fig. 11, Fig. 13 is a view taken in the direction of arrow F in Fig. 11, Fig. 14 is a longitudinal sectional view of the main part during contact opening, and Fig. 15 is a sectional view of the G in the diagram
A sectional view taken along line G, FIG. 16 is a vertical sectional view of the main part when the contact is completed, FIG. 17 is a sectional view taken along line H-H in FIG. 16, and FIG. 18 is an exploded perspective view of the main part. 19th
The figure is a diagram of the breaking principle of the contact device, and FIG. 20 is an arc voltage waveform diagram with time on the horizontal axis and voltage on the vertical axis. 11... Fixed contact, 12... Fixed contact, 13
... Magnetic pole plate, 14 ... Holder, 15 ... Movable contact, 16 ... Movable contact, 20 ... Contact device, 6
1... Arc extinguishing chamber, 62, 63, 64... Arc extinguishing grid, 64a, 64c... Notch, 65... Insulating frame, 65a... Separation, 65c... Exhaust gas groove, 66...
Insulating lid, 70... Arc extinguishing device.

Claims

[Claims for Utility Model Registration] (1) A pair of fixed contacts arranged in a U-shape and facing each other at intervals, with a fixed contact on the opposite side of the upper leg piece and a magnetic pole plate fixed on the back side. an arc extinguishing device attached to a contact device comprising a movable contact, which is supported by a holder that is vertically slidable between opposing fixed contacts, and has a movable contact that bridges and opens between the fixed contacts; The inner wall width of the arc extinguishing chamber that divides the contactor device into poles is wider than the inner wall width of the operating area of the movable contactor, and exhaust gas grooves are formed on both side walls constituting the arc extinguishing chamber, and the upper side is open. an insulating frame fixed to the insulating frame and positioned above the movable contact and having both ends close to both ends of the movable contact; flat arc-extinguishing grids arranged in parallel at intervals so as to be orthogonal to each;
An arc extinguishing grid is arranged on the outside of the flat arc extinguishing grid and has an L-shape with its tips facing inward and has a cutout at least on the upper edge of the outside, and an arc extinguishing grid that is detachably attached to the insulating frame. An arc extinguishing device for an electromagnetic contactor, comprising an insulating lid that closes an upper opening. (2) An electromagnetic contact in the arc extinguishing device according to claim 1 of the utility model registration, characterized in that each of the opposing tip edges of an L-shape located at least on the outside of the arc extinguishing grid has a notch. arc extinguishing device for the vessel.