JPH0170226U

JPH0170226U -

Info

Publication number: JPH0170226U
Application number: JP1987165503U
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: JPH069392Y2

Description

[Brief explanation of the drawing]

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１１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
開離途中の要部途中の要部縦断面図、第１５図は
第１３図のＧ―Ｇ線に沿う断面図、第１６図は接
点開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２
０図は説明用のアーク電圧オシログラフである。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、６３……角窓、６５……消弧板、６５ａ……
細溝、６６……絶縁枠、６６ａ……隔壁、６７…
…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. 3 is a view taken in the direction of arrow B in FIG. 11, FIG. 4 is a vertical sectional view of the main part during contact opening, and FIG. 5 is a sectional view taken along line C-C in FIG. 4. , Fig. 6 is a vertical cross-sectional view of the main part when the contact is completed, and Fig. 7 is the D-D of Fig. 6.
8 is an exploded perspective view of main parts, and 9 is a sectional view taken along the line.
The figure is an exploded perspective view of essential 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 the conventional device, and FIGS. FIG. 11 is a longitudinal sectional view of the electromagnetic contactor, FIG. 12 is a sectional view taken along line EE in FIG. 11, and FIG.
Fig. 13 is a view taken in the direction of arrow F in Fig. 11, Fig. 14 is a vertical sectional view of the main part in the middle of the contact opening, Fig. 15 is a sectional view taken along line GG in Fig. 13, Fig. 16 is a vertical cross-sectional view of the main part when the contact is fully opened, Fig. 17 is a cross-sectional view taken along line H-H in Fig. 16, Fig. 18 is an exploded perspective view of the main part, and Fig. 19 is the disconnection of the contact device. Principle diagram, 2nd
Figure 0 is an arc voltage oscillograph for explanation. 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, 63... Corner window, 65... Arc-extinguishing plate, 65a...
Thin groove, 66... Insulating frame, 66a... Partition wall, 67...
...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; an insulating frame having a wall width wider than an inner wall width of an operating area of the movable contactor and having an opening at the top, and an insulating frame having an opening at the top, the inner wall width of an arc extinguishing chamber dividing the contactor device for each pole being wider than the inner wall width of an operating area of the movable contact; a short circuit plate located above the movable contact and formed such that both ends thereof are close to both ends of the movable contact;
A flat arc extinguishing grid is arranged in parallel at intervals between opposing walls of the arc extinguishing chamber so as to be orthogonal to each of the fixed contacts; an arc-extinguishing plate having an L-shaped arc-extinguishing grid facing inward, and a plurality of narrow grooves provided in each of the openings of the insulating frame, perpendicular to the arrangement of the arc-extinguishing grid, and open on both sides; and,
An arc extinguishing device for an electromagnetic contactor, comprising an insulating cover that is detachably attached to the upper surface of the insulating frame and fixing the arc extinguishing plate. (2) In the arc extinguishing device according to claim 1 of the utility model registration claim, the arc extinguishing plate is made of metal and a gap is provided between the arc extinguishing plate and the arc extinguishing grid. arc device. (3) Scope of claims for utility model registration, paragraph 1 or 2
2. The arc extinguishing device for an electromagnetic contactor according to item 1, characterized in that the arc extinguishing grid has a square window in the vicinity of the bent portion of the L-shaped one except for the outermost part.