一、控制按鈕的作用

按鈕開關通(tong)常(chang)用(yong)作短時接(jie)通(tong)或斷(duan)開小(xiao)電(dian)(dian)流控制電(dian)(dian)路的開關，用(yong)于控制電(dian)(dian)路中發出啟動或停止(zhi)等指令，通(tong)過接(jie)觸器(qi)、繼(ji)電(dian)(dian)器(qi)等斷(duan)開主電(dian)(dian)路。

按鈕開關是一種結構簡(jian)單，應用(yong)十分(fen)廣泛的主令電(dian)器(qi)。在電(dian)氣(qi)自動(dong)(dong)控(kong)制電(dian)路中，用(yong)于手(shou)動(dong)(dong)發(fa)出控(kong)制信號(hao)以(yi)控(kong)制接觸器(qi)、繼電(dian)器(qi)、電(dian)磁起(qi)動(dong)(dong)器(qi)等。

應(ying)急按鈕開關的作用：

1、緊(jin)急按鈕開關是(shi)在緊(jin)急情況下，需要幫(bang)助時觸動的(de)開關。它是(shi)用(yong)來控制(zhi)2次(ci)線(xian)路的(de)總開關。

2、按(an)鈕(niu)(niu)(niu)，是一(yi)種常用(yong)的(de)控制(zhi)電(dian)器元(yuan)件，常用(yong)來接通或斷開“控制(zhi)電(dian)路”（其(qi)(qi)中(zhong)電(dian)流很小），從而達到(dao)控制(zhi)電(dian)動機(ji)或其(qi)(qi)他電(dian)氣設備運(yun)行目的(de)的(de)一(yi)種開關。常見的(de)按(an)鈕(niu)(niu)(niu)主(zhu)要用(yong)作急停按(an)鈕(niu)(niu)(niu)，啟動按(an)鈕(niu)(niu)(niu)，停止按(an)鈕(niu)(niu)(niu)，組合按(an)鈕(niu)(niu)(niu)（鍵盤），點(dian)動按(an)鈕(niu)(niu)(niu)，復位按(an)鈕(niu)(niu)(niu)。

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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(yuan)理(li)(li)比較好(hao)理(li)(li)解，直白點就是(shi)這樣的(de)：里(li)(li)面有(you)一個電磁(ci)鐵的(de)吸(xi)附(fu)裝置，當你(ni)把按鍵(jian)按下去(qu)之(zhi)后，里(li)(li)邊(bian)的(de)電磁(ci)鐵就代電產生磁(ci)性，然后通過這個吸(xi)附(fu)裝置把電路接通或(huo)者斷開。從而實現了線(xian)路的(de)遠程(cheng)控制(zhi)等功能。

按(an)(an)(an)(an)(an)鍵(jian)(jian)(jian)(jian)不受外力作(zuo)用（即靜態(tai)）時(shi)觸頭(tou)(tou)(tou)(tou)(tou)的分合(he)狀態(tai)，分為啟動(dong)按(an)(an)(an)(an)(an)鍵(jian)(jian)(jian)(jian)（即常(chang)(chang)(chang)(chang)開(kai)按(an)(an)(an)(an)(an)鍵(jian)(jian)(jian)(jian)）、停(ting)止(zhi)按(an)(an)(an)(an)(an)鍵(jian)(jian)(jian)(jian)（即常(chang)(chang)(chang)(chang)閉按(an)(an)(an)(an)(an)鍵(jian)(jian)(jian)(jian)）和復(fu)合(he)按(an)(an)(an)(an)(an)鍵(jian)(jian)(jian)(jian)（即常(chang)(chang)(chang)(chang)開(kai)、常(chang)(chang)(chang)(chang)閉觸頭(tou)(tou)(tou)(tou)(tou)組合(he)為一體的按(an)(an)(an)(an)(an)鍵(jian)(jian)(jian)(jian)）。對(dui)啟動(dong)按(an)(an)(an)(an)(an)鍵(jian)(jian)(jian)(jian)而言，按(an)(an)(an)(an)(an)下按(an)(an)(an)(an)(an)鍵(jian)(jian)(jian)(jian)帽時(shi)觸頭(tou)(tou)(tou)(tou)(tou)閉合(he)，松(song)開(kai)后(hou)觸頭(tou)(tou)(tou)(tou)(tou)自動(dong)斷(duan)開(kai)復(fu)位;停(ting)止(zhi)按(an)(an)(an)(an)(an)鍵(jian)(jian)(jian)(jian)則相反，按(an)(an)(an)(an)(an)下按(an)(an)(an)(an)(an)鍵(jian)(jian)(jian)(jian)帽時(shi)觸頭(tou)(tou)(tou)(tou)(tou)分開(kai)，松(song)開(kai)后(hou)觸頭(tou)(tou)(tou)(tou)(tou)自動(dong)閉合(he)復(fu)位。復(fu)合(he)按(an)(an)(an)(an)(an)鍵(jian)(jian)(jian)(jian)是按(an)(an)(an)(an)(an)下按(an)(an)(an)(an)(an)鍵(jian)(jian)(jian)(jian)帽時(shi)，橋式動(dong)觸頭(tou)(tou)(tou)(tou)(tou)向(xiang)下運動(dong)，使常(chang)(chang)(chang)(chang)閉觸頭(tou)(tou)(tou)(tou)(tou)先斷(duan)開(kai)后(hou)，常(chang)(chang)(chang)(chang)開(kai)觸頭(tou)(tou)(tou)(tou)(tou)才閉合(he)；當松(song)開(kai)按(an)(an)(an)(an)(an)鍵(jian)(jian)(jian)(jian)帽時(shi)，則常(chang)(chang)(chang)(chang)開(kai)常(chang)(chang)(chang)(chang)開(kai)觸頭(tou)(tou)(tou)(tou)(tou)先分斷(duan)復(fu)位后(hou)，常(chang)(chang)(chang)(chang)開(kai)觸頭(tou)(tou)(tou)(tou)(tou)再閉合(he)復(fu)位。