電(dian)動牙(ya)(ya)刷(shua)是近幾年出現的(de)新產品，在(zai)國外已(yi)掀起了口腔(qiang)保健領(ling)域的(de)一場革命。電(dian)動牙(ya)(ya)刷(shua)通過(guo)電(dian)動機(ji)芯的(de)快速旋轉(zhuan)或震(zhen)動，使(shi)刷(shua)頭產生頻(pin)震(zhen)動，瞬間(jian)將牙(ya)(ya)膏分解成細微泡沫(mo)，深入清潔牙(ya)(ya)縫；與此同(tong)時，刷(shua)毛的(de)顫(zhan)動能促進口腔(qiang)的(de)血液循(xun)環，對牙(ya)(ya)齦(yin)組織有按摩效(xiao)果。

從原理(li)上分(fen)，電動(dong)(dong)(dong)牙(ya)(ya)(ya)刷(shua)(shua)(shua)有兩大類(lei)(lei)(lei)：旋轉(zhuan)與振(zhen)動(dong)(dong)(dong)。旋轉(zhuan)類(lei)(lei)(lei)的(de)(de)(de)牙(ya)(ya)(ya)刷(shua)(shua)(shua)原理(li)簡單，就是電動(dong)(dong)(dong)機(ji)傳(chuan)動(dong)(dong)(dong)圓形刷(shua)(shua)(shua)頭(tou)旋轉(zhuan)，在執行普通刷(shua)(shua)(shua)牙(ya)(ya)(ya)動(dong)(dong)(dong)作(zuo)的(de)(de)(de)同時加強摩(mo)擦(ca)效果，旋轉(zhuan)類(lei)(lei)(lei)的(de)(de)(de)牙(ya)(ya)(ya)刷(shua)(shua)(shua)噪(zao)音大，牙(ya)(ya)(ya)面(mian)清(qing)洗(xi)很干凈，牙(ya)(ya)(ya)縫(feng)清(qing)洗(xi)相對較弱，但對牙(ya)(ya)(ya)齒磨損大，不建議長期使用。振(zhen)動(dong)(dong)(dong)類(lei)(lei)(lei)型(xing)的(de)(de)(de)牙(ya)(ya)(ya)刷(shua)(shua)(shua)更復雜，從價格上來看也更端。振(zhen)動(dong)(dong)(dong)類(lei)(lei)(lei)型(xing)的(de)(de)(de)牙(ya)(ya)(ya)刷(shua)(shua)(shua)內部有一個電傳(chuan)動(dong)(dong)(dong)的(de)(de)(de)振(zhen)動(dong)(dong)(dong)電機(ji)，能讓刷(shua)(shua)(shua)頭(tou)產生垂(chui)直于刷(shua)(shua)(shua)柄方(fang)向的(de)(de)(de)頻擺(bai)動(dong)(dong)(dong)，但擺(bai)動(dong)(dong)(dong)的(de)(de)(de)幅度(du)很小。刷(shua)(shua)(shua)牙(ya)(ya)(ya)的(de)(de)(de)時候一方(fang)面(mian)頻擺(bai)動(dong)(dong)(dong)的(de)(de)(de)刷(shua)(shua)(shua)頭(tou)能完成洗(xi)刷(shua)(shua)(shua)牙(ya)(ya)(ya)齒的(de)(de)(de)動(dong)(dong)(dong)作(zuo)，另一方(fang)面(mian)每(mei)分(fen)鐘的(de)(de)(de)振(zhen)動(dong)(dong)(dong)也讓口腔里的(de)(de)(de)牙(ya)(ya)(ya)膏(gao)和水(shui)的(de)(de)(de)混合(he)物(wu)產生大量微小的(de)(de)(de)氣泡，氣泡爆(bao)裂時產生的(de)(de)(de)壓力(li)可以深(shen)入(ru)牙(ya)(ya)(ya)縫(feng)清(qing)潔污垢。

智(zhi)(zhi)能(neng)牙(ya)刷電(dian)(dian)機也(ye)稱(cheng)為(wei)電(dian)(dian)動(dong)(dong)(dong)牙(ya)刷馬達、齒輪箱，用于(yu)智(zhi)(zhi)能(neng)電(dian)(dian)動(dong)(dong)(dong)牙(ya)刷上的動(dong)(dong)(dong)力傳動(dong)(dong)(dong)裝置；這類微型(xing)減速電(dian)(dian)機屬(shu)于(yu)非品(pin)，根據電(dian)(dian)動(dong)(dong)(dong)牙(ya)刷的參數定制(zhi)而(er)成，電(dian)(dian)壓通常在24v以下，直徑尺(chi)寸(cun)38mm以下，電(dian)(dian)機齒輪箱傳動(dong)(dong)(dong)結構(gou)材質分別采用塑膠、金屬(shu)制(zhi)造而(er)成；目前主流的傳動(dong)(dong)(dong)方式分為(wei)：

①有(you)齒輪的(de)傳統(tong)電機動力輸出(chu)系(xi)統(tong)——微型(xing)電機；

②非(fei)齒輪(lun)動(dong)力輸出(chu)系統——磁懸動(dong)力系統（MTIC）。

電(dian)機(ji)（電(dian)動(dong)(dong)(dong)(dong)(dong)(dong)機(ji)、馬(ma)達(da)）是電(dian)動(dong)(dong)(dong)(dong)(dong)(dong)牙刷(shua)(shua)(shua)的(de)(de)(de)動(dong)(dong)(dong)(dong)(dong)(dong)力(li)來(lai)源，也是部件，通常需要(yao)減速器來(lai)加持傳(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)(dong)方(fang)(fang)式(shi)和力(li)矩。電(dian)動(dong)(dong)(dong)(dong)(dong)(dong)牙刷(shua)(shua)(shua)使用的(de)(de)(de)微型直流電(dian)機(ji)大致(zhi)(zhi)可分(fen)為兩種(zhong)(zhong)(zhong)：一種(zhong)(zhong)(zhong)是單(dan)向(xiang)旋(xuan)(xuan)轉(zhuan)(zhuan)的(de)(de)(de)，類(lei)似四驅車的(de)(de)(de)馬(ma)達(da)。此類(lei)電(dian)機(ji)一般通過(guo)傳(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)(dong)裝置（齒(chi)輪(lun)、傳(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)(dong)桿等(deng)），將馬(ma)達(da)的(de)(de)(de)單(dan)向(xiang)圓周旋(xuan)(xuan)轉(zhuan)(zhuan)變為刷(shua)(shua)(shua)頭的(de)(de)(de)左右旋(xuan)(xuan)轉(zhuan)(zhuan)或其他(ta)運(yun)動(dong)(dong)(dong)(dong)(dong)(dong)方(fang)(fang)式(shi)；目(mu)前(qian)市場(chang)上(shang)每個(ge)的(de)(de)(de)智能電(dian)動(dong)(dong)(dong)(dong)(dong)(dong)牙刷(shua)(shua)(shua)齒(chi)輪(lun)箱都是按照項 目(mu)來(lai)立項研究(jiu)、發開(kai)性能的(de)(de)(de)電(dian)動(dong)(dong)(dong)(dong)(dong)(dong)牙刷(shua)(shua)(shua)電(dian)機(ji)；傳(chuan)(chuan)統的(de)(de)(de)電(dian)動(dong)(dong)(dong)(dong)(dong)(dong)牙刷(shua)(shua)(shua)是采用直流有刷(shua)(shua)(shua)電(dian)機(ji)與渦輪(lun)蝸(gua)桿的(de)(de)(de)傳(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)(dong)方(fang)(fang)式(shi)來(lai)實現牙刷(shua)(shua)(shua)的(de)(de)(de)轉(zhuan)(zhuan)動(dong)(dong)(dong)(dong)(dong)(dong)，但由(you)于(yu)齒(chi)輪(lun)的(de)(de)(de)精(jing)度(du)及傳(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)(dong)方(fang)(fang)式(shi)的(de)(de)(de)限制(zhi)，在(zai)刷(shua)(shua)(shua)牙的(de)(de)(de)過(guo)程中隨(sui)著力(li)度(du)增大導致(zhi)(zhi)輸出的(de)(de)(de)力(li)矩、轉(zhuan)(zhuan)速降(jiang)低。兆(zhao)威機(ji)電(dian)在(zai)電(dian)動(dong)(dong)(dong)(dong)(dong)(dong)牙刷(shua)(shua)(shua)齒(chi)輪(lun)箱的(de)(de)(de)開(kai)發上(shang)擺脫了傳(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)(dong)渦輪(lun)蝸(gua)桿這種(zhong)(zhong)(zhong)不可靠的(de)(de)(de)傳(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)(dong)方(fang)(fang)式(shi)，采用永(yong)磁(ci)直流電(dian)機(ji)與精(jing)密傳(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)(dong)行星結構的(de)(de)(de)齒(chi)輪(lun)箱配合使得牙刷(shua)(shua)(shua)的(de)(de)(de)輸出力(li)度(du)均衡、轉(zhuan)(zhuan)速恒定。