Reduce motor noise's silencing device

The utility model relates to a reduce motor noise's silencing device, it by: cover plate, high frequency inefficacy wedge, lug, cotton, the perforated plate constitution of superfine glass. It is cotton to be equipped with superfine glass between cover plate and perforated plate, and high frequency inefficacy wedge has a plurality ofly, and it is adorned in the inboard of perforated plate, is equipped with the lug at the both ends of cover plate. This product simple structure, its adopts and to hinder the formula and fall the structure of making an uproar, have a fine the noise reduction effect to the ventilation of motor, higher and have the high frequency inefficacy wedge of fabulous sound absorption effect to the high frequency at the inside acoustic absorptivity that has increased of amortization cover, has increased the amortization area, has reduced the windage, makes the wind path more smooth and easy, and motor operating noise is little.