Improved dust mask

Abstract

The invention discloses an improved dust mask. The improved dust mask comprises a tile-shaped cover, wherein the convex face of the tile-shaped cover faces towards the front, air holes are formed in the tile-shaped cover, a filter element is installed at the front end or the rear end of the tile-shaped cover, a soft diaphragm is arranged at the rear end of the tile-shaped cover, the left end and the right end of the soft diaphragm are connected with the linear side at the left end of the tile-shaped cover and the linear side at the right end of the tile-shaped cover respectively, the upper end and the lower end of the soft diaphragm are bent and connected with the arc-shaped side of the upper end of the tile-shaped cover and the arc-shaped side at the lower end of the tile-shaped cover respectively, a closed cavity is formed between the tile-shaped cover and the soft diaphragm, and a diaphragm hole is formed in the soft diaphragm. Through reasonable structural improvement of the mask, particularly through the improvement that the tile-shaped cover is matched with the soft diaphragm, the suitability of the mask can be improved easily, the mask can be suitable for various types of faces or facial activities, the air tightness of the mask is greatly improved while the structural strength of the mask is guaranteed, and the mask is simple in structure, easy to manufacture and favorable for popularization and application of technology.

Description

technical field [0001] The invention relates to a mask, in particular to a dustproof mask with better sealing performance. Background technique [0002] Air filter dust masks are mainly used to isolate pollutants in order to prevent inhalation of pollutants in the air when working in a highly polluted environment. Among the common air-filtering dust masks, there are mainly two types: disposable medical masks and industrial masks with covers. But no matter what kind of mask, the realization of its isolation effect must first ensure the airtight and air-proof effect of the mask. If the air leakage rate of the mask itself is too high, its isolation effect will inevitably be greatly reduced. For example, the mask described in the designer's patent No. 201210314466.5 "dust mask", its airtightness is very dependent on the degree of fit between the mask body and the face, but because the facial muscles cannot move, the outside world Gentleness is easy to leak through the small ...

AI Technical Summary

Problems solved by technology

If the air leakage rate of the mask itself is too high, its isolation effect will inevitably be greatly reduced

For example, the mask described in the "dust mask" with the designer's patent number 201210314466.5, its airtightness is very dependent on the degree of fit between the mask body and the face, but because the facial muscles cannot move, the outside world Gentleness is easy to leak through the small gap between the mask body and the face

Another example is the mask described in the "Mask" with patent No. 201310508293.X. Its airtightness is realized by the silicone sleeve on the outer edge of the transparent cover. However, it is found in actual use that once the silicone sleeve is too hard, the airtightness is still greatly reduced. And once the silicone sleeve is too soft, the mask will not be stable

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