Planar support of three-dimensional mask and three-dimensional mask provided with planar support

Abstract

A planar support of a three-dimensional mask is used for being mounted in a mask body provided with three-dimensional support space, adopts an elastic planar frame structure and comprises two support bodies which are symmetrically arranged, wherein adjacent side edges of the two support bodies are inner circumferential edges, and non-adjacent side edges are outer circumferential edges; a connecting body for connecting the two support bodies is arranged between the inner circumferential edges of the two support bodies, and mutually matched connectors for connecting the two support bodies are arranged on the inner circumferential edges or on inner sides of the inner circumferential edges on two sides of the connecting body; the two support bodies can bend and deform simultaneously around the connecting body towards one side surface of the planar support of the three-dimensional mask, and combine through corresponding connection by the connectors to form a three-dimensional support structure with the connecting body as the top, and outer circumferential edges of the two support bodies bend and combine to form a face attaching surface. The invention further provides the three-dimensional mask provided with the planar support. The three-dimensional mask is simple and convenient to package and store, automatic batch production is facilitated, and the three-dimensional mask producing efficiency is increased.

Description

technical field [0001] The invention relates to a mask, in particular to a plane three-dimensional mask bracket capable of being combined through flipping and a three-dimensional mask with a plane three-dimensional mask bracket. Background technique [0002] The main purpose of the mask is to isolate harmful substances transmitted by gas, such as fine particles mainly PM2.5 and viruses transmitted in aerosol state. Generally speaking, masks have a certain gas leakage rate. The corners of the wearer's mouth, chin and both sides of the bridge of the nose are the main places where leakage is likely to occur. The discontinuity of the contact surface between these areas and the mask reduces the airtight effect. One way to increase the airtight effect is to tighten the straps of the mask so that the skin of the face is sunken to achieve a seal. This way the user feels very uncomfortable to wear, and at the same time tighten the straps so that the part outside the center of the mas...

AI Technical Summary

Problems solved by technology

The masks of these two schemes have a three-dimensional structure approximately hemispherical. The disadvantage is that the packaging and storage take up a lot of space, and the three-dimensional support frame increases the difficulty of production.

[0004] Another disadvantage of the above-mentioned three-dimensional support structure is that the manufacturing cost is relatively high

Since the thickness of the three-dimensional support frame structure reaches more than 3 to 5 cm, it is necessary to make a thicker injection mold. Compared with a thinner flat injection mold within 2 cm, the cost of the mold is higher.

At the same time, compared with a thinner injection mold, a thicker injection mold has more restrictions on the injection nozzle, the injection and cooling time of the rubber material is relatively long, and the production batch per unit time is relatively small, which restricts production. efficiency, resulting in higher production costs

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