JPH0170224U

JPH0170224U -

Info

Publication number: JPH0170224U
Application number: JP1987165501U
Authority: JP
Priority date: 1987-10-29
Filing date: 1987-10-29
Publication date: 1989-05-10

Description

【図面の簡単な説明】[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
は実施例と従来装置とのアーク滞留時間比較線図
、第１０図ないし第１７図は従来の電磁接触器の
消弧装置の一例を示す図で、第１０図は電磁接触
器の縦断面図、第１１図は第１０図のＥ―Ｅ線に
沿う断面図、第１２図は第１０図のＦ矢視図、第
１３図は接点開離途中の要部縦断面図、第１４図
は第１３図のＧ―Ｇ線に沿う断面図、第１５図は
接点開離完了時の要部縦断面図、第１６図は第１
５図のＨ―Ｈ線に沿う断面図、第１７図は要部分
解斜図、第１８図は接触子装置の遮断原理説明図
、第１９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、６２ａ，６２ｂ，６３……消弧グ
リツド、６４……消弧板、６４ａ……ガス抜き孔
、６５……絶縁枠、６５ａ……隔壁、６６……絶
縁蓋、６６ａ……溝、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 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. An exploded perspective view, FIG. 9 is a comparison diagram of arc residence time between the embodiment and a conventional device, FIGS. 10 to 17 are diagrams showing an example of a conventional arc extinguishing device for an electromagnetic contactor, and FIG. A longitudinal cross-sectional view of the electromagnetic contactor, Fig. 11 is a cross-sectional view taken along line E-E in Fig. 10, Fig. 12 is a view taken in the direction of arrow F in Fig. 10, and Fig. 13 is a longitudinal cross-section of the main part during contact opening. 14 is a sectional view taken along the line GG in FIG.
5 is a cross-sectional view taken along line H-H in Figure 5, Figure 17 is an exploded perspective view of the main part, Figure 18 is an explanatory diagram of the breaking principle of the contact device, and Figure 19 shows time on the horizontal axis and voltage on the vertical axis. FIG. 3 is a diagram of arc voltage waveforms. 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, 62a, 62b, 63... Arc-extinguishing grid, 64... Arc-extinguishing plate, 64a... Gas vent hole, 65... Insulating frame, 65a... Partition wall, 66... Insulating cover, 66a ...Groove, 70... Arc extinguishing device.

Claims

【実用新案登録請求の範囲】 (1) コ字状にして間隔をおき対向配置され上側
脚片の対向側に固定接点が背面側に磁極板がそれ
ぞれ固着された２個を一対とする固定接触子、該
固定接触子の対向間を上下方向摺動自在なホルダ
に支持され前記固定接点間を橋絡開放する可動接
点を備えた可動接触子でなる接触子装置に付属さ
れる消弧装置であつて、前記接触子装置を極毎に
区面する消弧室内壁幅が前記可動接触子の動作領
域内壁幅より広く対向隔壁が形成され上方が開口
された絶縁枠と、該絶縁枠に固着され前記可動接
触子の上方に位置するとともに両端が可動接触子
の両端に接近するように形成された短絡板と、前
記消弧室の対向壁間に前記固定接触子のそれぞれ
と直交するように間隔をおき並設された複数の消
弧グリツドと、前記絶縁枠の開口部にそれぞれに
設けられ前記消弧グリツドの間隔位置に少なくと
も１個以上のガス抜き孔が設けられた消弧板と、
前記絶縁枠の上面に着脱可能に取付けられ前記ガ
ス抜き孔のそれぞれと連通し両側に開口する溝が
設けられた絶縁蓋とを備えてなることを特徴とす
る電磁接触器の消弧装置。 (2) 実用新案登録請求の範囲第１項記載の消弧
装置において、消弧板の材質を金属とするととも
に消弧グリツドとの間に隙間を設けたことを特徴
とする電磁接触器の消弧装置。[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 for bridging and opening between the fixed contacts. an insulating frame having an opening at the top and an opposing partition formed therein, the width of the arc extinguishing chamber wall width defining each pole of the contact device being wider than the inner wall width of the operating area of the movable contact; and an insulating frame fixed to the insulating frame. 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, and an opposing wall of the arc extinguishing chamber so as to be perpendicular to each of the fixed contacts. a plurality of arc extinguishing grids arranged in parallel at intervals; an arc extinguishing plate provided in each opening of the insulating frame and having at least one gas vent hole at a position spaced between the arc extinguishing grids;
An arc extinguishing device for an electromagnetic contactor, comprising: an insulating cover that is removably attached to the upper surface of the insulating frame and has grooves that communicate with each of the gas vent holes and are open on both sides. (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.