JPH0170227U

JPH0170227U -

Info

Publication number: JPH0170227U
Application number: JP1987165504U
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
解斜視図、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……絶縁枠、６４ａ……隔壁、６５
……絶縁蓋、６５ａ……ガス抜き孔、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. 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 the line H-H in Figure 5, Figure 17 is an exploded perspective view of the main parts, Figure 18 is an explanatory diagram of the breaking principle of the contactor 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... Insulating frame, 64a... Partition wall, 65
... Insulating lid, 65a ... Gas vent hole, 70 ... Arc extinguishing device.

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

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画
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
弧室内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少なくとも外側の一
枚が固定接触子と接近する複数の消弧グリツドと
、前記絶縁枠の上方に着脱可能に取付けられ前記
消弧グリツド間隔位置に多数個のガス抜き孔が設
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。 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, respectively. An arc extinguishing device attached to a contact device comprising a movable contact supported by a directionally slidable holder and having a movable contact for bridging and opening between the fixed contacts, wherein the contact device an insulating frame having a wall width wider than the inner wall width of the operating area of the movable contact to partition the arc-extinguishing chamber, an insulating frame having an opposing partition formed thereon and open at the top; short-circuit plates formed so as to be close to both ends of the movable contact, and a short-circuit plate arranged in parallel at intervals so as to be orthogonal to each of the fixed contacts between the arc extinguishing chamber wall and at least one of the outer plates is in fixed contact. A plurality of arc extinguishing grids that are close to each other, and an insulating cover that is removably attached above the insulating frame and are provided with a number of gas vent holes at intervals between the arc extinguishing grids. Arc extinguishing device for electromagnetic contactors.