一、控制按鈕的作用
按鈕開關通常用(yong)作短(duan)時(shi)接通或斷開(kai)(kai)小電(dian)流控制(zhi)電(dian)路的開(kai)(kai)關,用(yong)于(yu)控制(zhi)電(dian)路中發出啟動或停止(zhi)等指(zhi)令,通過接觸器、繼(ji)電(dian)器等斷開(kai)(kai)主(zhu)電(dian)路。
按(an)鈕開關是一種結(jie)構簡(jian)單(dan),應用(yong)十分(fen)廣(guang)泛的主(zhu)令電(dian)(dian)器。在電(dian)(dian)氣自動(dong)控(kong)制電(dian)(dian)路中,用(yong)于手(shou)動(dong)發出控(kong)制信號以控(kong)制接(jie)觸器、繼電(dian)(dian)器、電(dian)(dian)磁起動(dong)器等。
應急按鈕開關的(de)作用:
1、緊急按鈕開關(guan)(guan)是(shi)在緊急情況下,需要幫助時觸動(dong)的開關(guan)(guan)。它是(shi)用來控(kong)制2次(ci)線路的總(zong)開關(guan)(guan)。
2、按(an)鈕(niu)(niu)(niu),是一(yi)種(zhong)(zhong)常用的(de)控制電器元件(jian),常用來接通或斷(duan)開“控制電路(lu)”(其中電流很小),從(cong)而達(da)到控制電動(dong)機或其他(ta)電氣設備運行(xing)目的(de)的(de)一(yi)種(zhong)(zhong)開關。常見的(de)按(an)鈕(niu)(niu)(niu)主要(yao)用作急停按(an)鈕(niu)(niu)(niu),啟動(dong)按(an)鈕(niu)(niu)(niu),停止按(an)鈕(niu)(niu)(niu),組合按(an)鈕(niu)(niu)(niu)(鍵(jian)盤),點動(dong)按(an)鈕(niu)(niu)(niu),復位按(an)鈕(niu)(niu)(niu)。
二、按鈕開關的工作原理
按鈕一般由按鈕帽、復位彈簧、橋式動觸頭、靜觸頭、支柱連桿及外殼等部分組成。按鍵開關的(de)工作原理(li)比較好理(li)解(jie),直白點(dian)就(jiu)是(shi)這(zhe)樣的(de):里面(mian)有一個(ge)電磁鐵(tie)的(de)吸(xi)(xi)附裝(zhuang)置,當你(ni)把按鍵按下去之后(hou),里邊的(de)電磁鐵(tie)就(jiu)代電產生磁性,然后(hou)通(tong)過這(zhe)個(ge)吸(xi)(xi)附裝(zhuang)置把電路接通(tong)或者斷開。從而(er)實現(xian)了線(xian)路的(de)遠程控制(zhi)等功(gong)能(neng)。
按(an)(an)(an)(an)(an)鍵(jian)(jian)不受外力(li)作(zuo)用(即(ji)靜態)時(shi)觸(chu)(chu)頭(tou)(tou)的(de)分合(he)狀態,分為啟動(dong)(dong)按(an)(an)(an)(an)(an)鍵(jian)(jian)(即(ji)常(chang)(chang)開(kai)按(an)(an)(an)(an)(an)鍵(jian)(jian))、停(ting)止按(an)(an)(an)(an)(an)鍵(jian)(jian)(即(ji)常(chang)(chang)閉(bi)按(an)(an)(an)(an)(an)鍵(jian)(jian))和復(fu)合(he)按(an)(an)(an)(an)(an)鍵(jian)(jian)(即(ji)常(chang)(chang)開(kai)、常(chang)(chang)閉(bi)觸(chu)(chu)頭(tou)(tou)組合(he)為一體的(de)按(an)(an)(an)(an)(an)鍵(jian)(jian))。對啟動(dong)(dong)按(an)(an)(an)(an)(an)鍵(jian)(jian)而言,按(an)(an)(an)(an)(an)下(xia)按(an)(an)(an)(an)(an)鍵(jian)(jian)帽(mao)時(shi)觸(chu)(chu)頭(tou)(tou)閉(bi)合(he),松開(kai)后觸(chu)(chu)頭(tou)(tou)自(zi)動(dong)(dong)斷(duan)開(kai)復(fu)位(wei);停(ting)止按(an)(an)(an)(an)(an)鍵(jian)(jian)則相反,按(an)(an)(an)(an)(an)下(xia)按(an)(an)(an)(an)(an)鍵(jian)(jian)帽(mao)時(shi)觸(chu)(chu)頭(tou)(tou)分開(kai),松開(kai)后觸(chu)(chu)頭(tou)(tou)自(zi)動(dong)(dong)閉(bi)合(he)復(fu)位(wei)。復(fu)合(he)按(an)(an)(an)(an)(an)鍵(jian)(jian)是按(an)(an)(an)(an)(an)下(xia)按(an)(an)(an)(an)(an)鍵(jian)(jian)帽(mao)時(shi),橋式動(dong)(dong)觸(chu)(chu)頭(tou)(tou)向(xiang)下(xia)運動(dong)(dong),使常(chang)(chang)閉(bi)觸(chu)(chu)頭(tou)(tou)先(xian)斷(duan)開(kai)后,常(chang)(chang)開(kai)觸(chu)(chu)頭(tou)(tou)才閉(bi)合(he);當松開(kai)按(an)(an)(an)(an)(an)鍵(jian)(jian)帽(mao)時(shi),則常(chang)(chang)開(kai)常(chang)(chang)開(kai)觸(chu)(chu)頭(tou)(tou)先(xian)分斷(duan)復(fu)位(wei)后,常(chang)(chang)開(kai)觸(chu)(chu)頭(tou)(tou)再閉(bi)合(he)復(fu)位(wei)。