電動(dong)(dong)(dong)牙(ya)(ya)刷(shua)是近幾年出(chu)現的新產品，在國外已掀起了(le)口腔(qiang)保(bao)健領域的一場革命。電動(dong)(dong)(dong)牙(ya)(ya)刷(shua)通過電動(dong)(dong)(dong)機芯的快(kuai)速旋(xuan)轉或震動(dong)(dong)(dong)，使刷(shua)頭產生頻震動(dong)(dong)(dong)，瞬間將牙(ya)(ya)膏分解成細微泡沫，深入清(qing)潔牙(ya)(ya)縫；與此同時，刷(shua)毛的顫動(dong)(dong)(dong)能促(cu)進口腔(qiang)的血(xue)液循環，對牙(ya)(ya)齦組織有按(an)摩效(xiao)果。

從原理上分，電動(dong)(dong)(dong)牙(ya)(ya)刷有(you)兩大(da)(da)(da)類(lei)：旋(xuan)(xuan)轉與振(zhen)動(dong)(dong)(dong)。旋(xuan)(xuan)轉類(lei)的(de)(de)牙(ya)(ya)刷原理簡單，就(jiu)是電動(dong)(dong)(dong)機(ji)驅動(dong)(dong)(dong)圓(yuan)形刷頭(tou)旋(xuan)(xuan)轉，在執行普(pu)通刷牙(ya)(ya)動(dong)(dong)(dong)作的(de)(de)同時(shi)加強摩擦效果，旋(xuan)(xuan)轉類(lei)的(de)(de)牙(ya)(ya)刷噪(zao)音大(da)(da)(da)，牙(ya)(ya)面(mian)清(qing)洗(xi)很干凈，牙(ya)(ya)縫清(qing)洗(xi)相(xiang)對較弱，但(dan)對牙(ya)(ya)齒磨損大(da)(da)(da)，不建議(yi)長期使用。振(zhen)動(dong)(dong)(dong)類(lei)型的(de)(de)牙(ya)(ya)刷更(geng)復雜，從價格上來看也(ye)更(geng)端。振(zhen)動(dong)(dong)(dong)類(lei)型的(de)(de)牙(ya)(ya)刷內部(bu)有(you)一個(ge)電驅動(dong)(dong)(dong)的(de)(de)振(zhen)動(dong)(dong)(dong)電機(ji)，能讓刷頭(tou)產生垂直于刷柄方向(xiang)的(de)(de)頻擺動(dong)(dong)(dong)，但(dan)擺動(dong)(dong)(dong)的(de)(de)幅度很小。刷牙(ya)(ya)的(de)(de)時(shi)候一方面(mian)頻擺動(dong)(dong)(dong)的(de)(de)刷頭(tou)能完成洗(xi)刷牙(ya)(ya)齒的(de)(de)動(dong)(dong)(dong)作，另一方面(mian)每分鐘的(de)(de)振(zhen)動(dong)(dong)(dong)也(ye)讓口(kou)腔里的(de)(de)牙(ya)(ya)膏和(he)水的(de)(de)混合物產生大(da)(da)(da)量微小的(de)(de)氣泡，氣泡爆裂(lie)時(shi)產生的(de)(de)壓(ya)力可以深入牙(ya)(ya)縫清(qing)潔污垢(gou)。

智能(neng)牙刷(shua)電(dian)(dian)機(ji)也(ye)稱為(wei)(wei)電(dian)(dian)動(dong)(dong)牙刷(shua)馬(ma)達、齒(chi)輪箱，用于智能(neng)電(dian)(dian)動(dong)(dong)牙刷(shua)上的動(dong)(dong)力驅動(dong)(dong)裝置；這類微(wei)型減速電(dian)(dian)機(ji)屬(shu)于非品(pin)，根據電(dian)(dian)動(dong)(dong)牙刷(shua)的參數定制(zhi)而成，電(dian)(dian)壓通常在24v以下，直徑(jing)尺寸38mm以下，電(dian)(dian)機(ji)齒(chi)輪箱驅動(dong)(dong)結構材質分別采用塑(su)膠、金屬(shu)制(zhi)造(zao)而成；目(mu)前主流的驅動(dong)(dong)方式分為(wei)(wei)：

①有齒輪的傳統(tong)(tong)電機動力輸出系統(tong)(tong)——微(wei)型電機；

②非齒輪動力(li)輸出(chu)系(xi)(xi)統(tong)——磁懸動力(li)系(xi)(xi)統(tong)（MTIC）。

電(dian)(dian)(dian)(dian)機(ji)（電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)機(ji)、馬達）是(shi)(shi)電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)牙(ya)(ya)刷(shua)(shua)(shua)的(de)(de)(de)動(dong)(dong)(dong)(dong)(dong)力來源，也是(shi)(shi)部件，通常(chang)需要減速(su)器來加持(chi)驅(qu)(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)方(fang)式(shi)和力矩。電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)牙(ya)(ya)刷(shua)(shua)(shua)使用的(de)(de)(de)微型直(zhi)流(liu)電(dian)(dian)(dian)(dian)機(ji)大致(zhi)可分為兩種(zhong)(zhong)：一種(zhong)(zhong)是(shi)(shi)單向(xiang)旋(xuan)轉的(de)(de)(de)，類(lei)似(si)四驅(qu)(qu)(qu)(qu)車(che)的(de)(de)(de)馬達。此類(lei)電(dian)(dian)(dian)(dian)機(ji)一般通過驅(qu)(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)裝(zhuang)置（齒(chi)輪、驅(qu)(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)桿(gan)等），將(jiang)馬達的(de)(de)(de)單向(xiang)圓周旋(xuan)轉變為刷(shua)(shua)(shua)頭的(de)(de)(de)左右(you)旋(xuan)轉或(huo)其(qi)他運動(dong)(dong)(dong)(dong)(dong)方(fang)式(shi)；目前市場上每個的(de)(de)(de)智能電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)牙(ya)(ya)刷(shua)(shua)(shua)齒(chi)輪箱都是(shi)(shi)按照項 目來立(li)項研究、發開性能的(de)(de)(de)電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)牙(ya)(ya)刷(shua)(shua)(shua)電(dian)(dian)(dian)(dian)機(ji)；傳統的(de)(de)(de)電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)牙(ya)(ya)刷(shua)(shua)(shua)是(shi)(shi)采用直(zhi)流(liu)有(you)刷(shua)(shua)(shua)電(dian)(dian)(dian)(dian)機(ji)與渦輪蝸(gua)桿(gan)的(de)(de)(de)驅(qu)(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)方(fang)式(shi)來提升牙(ya)(ya)刷(shua)(shua)(shua)的(de)(de)(de)轉動(dong)(dong)(dong)(dong)(dong)，但(dan)由于齒(chi)輪的(de)(de)(de)精度及(ji)驅(qu)(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)方(fang)式(shi)的(de)(de)(de)限制，在刷(shua)(shua)(shua)牙(ya)(ya)的(de)(de)(de)過程中隨著力度增(zeng)大導致(zhi)輸出的(de)(de)(de)力矩、轉速(su)降低。兆威機(ji)電(dian)(dian)(dian)(dian)在電(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)牙(ya)(ya)刷(shua)(shua)(shua)齒(chi)輪箱的(de)(de)(de)開發上擺脫了驅(qu)(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)渦輪蝸(gua)桿(gan)這種(zhong)(zhong)不可靠的(de)(de)(de)驅(qu)(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)方(fang)式(shi)，采用永(yong)磁直(zhi)流(liu)電(dian)(dian)(dian)(dian)機(ji)與精密驅(qu)(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)行(xing)星結構(gou)的(de)(de)(de)齒(chi)輪箱配合使得牙(ya)(ya)刷(shua)(shua)(shua)的(de)(de)(de)輸出力度均衡、轉速(su)恒定。