Replacement breathing mask with collapsible brace

Abstract

The replacement bracket folding mask of the present invention includes a bottom ring, a collar, and a flexible filter screen cover, and is characterized in that: it also includes a middle arch, a buckle, a biaxial hinge, and a connecting ring; the bottom ring The shape of the cross-section is C-shaped, and it is used to form an elliptical shape. There are biaxial hinges at the two places where the bottom ring intersects with the elliptical long axis of the bottom ring. The two ends of the middle arch are respectively hinged on the bottom ring. The inner side between the two shafts of the shaft hinge, the collar is made of circular tubular material, and there are also biaxial hinges at the middle positions on both sides of the collar, and the buckle is fixedly connected to the bottom ring or the collar. The outer side of the biaxial hinge; after wearing it, you can replace the appropriate flexible filter cover according to the needs of the construction site. When resting, drinking and smoking, you don’t need to take off the mask, just take out the buckles on both sides and put the upper part of the mask on Just turn it out, the mask has a large filter air area, the mask frame is easy to clean, the mesh cover is easy to replace, and the structure is simple, the cost is low, and it is easy to use. It is suitable for various occasions, especially for construction workers.

Description

technical field [0001] The invention relates to a mask, in particular to a replacement bracket folding mask. Background technique [0002] The masks used for construction in the prior art are too heavy to be convenient for construction operations, and the common masks of the prior art are not suitable for construction workers because of poor sealing and poor filtering effect, especially when construction workers are resting or It is necessary to take off the mask, drink water and smoke, because of the environment, there is no place to store the mask. Contents of the invention [0003] The purpose of this invention is to provide a kind of alternative bracket folding mouth mask, it has overcome above-mentioned defective, has made up for the deficiency that exists in the prior art. [0004] The replacement bracket folding mask of the present invention includes a bottom ring, a collar, and a flexible filter screen cover, and is characterized in that: it also includes a middle...

AI Technical Summary

Problems solved by technology

[0002] The masks used for construction in the prior art are too heavy to be convenient for construction operations, and the common masks of the prior art are not suitable for construction workers because of poor sealing and poor filtering effect, especially when construction workers are resting or Need to take off the mask, drink water, smoke, because of the environment, there is no place to store the mask

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