CN111330182A

CN111330182A - Mask or face guard

Info

Publication number: CN111330182A
Application number: CN202010312096.0A
Authority: CN
Inventors: 李金中; 韩德玮
Original assignee: Shenzhen Meidahang Technology Co ltd
Current assignee: Shenzhen Meidahang Technology Co ltd
Priority date: 2020-04-20
Filing date: 2020-04-20
Publication date: 2020-06-26

Abstract

The invention relates to an anti-gas, dustproof and smoke-proof mask or face mask, which can clearly and loudly transmit the speaking of a consumer to the outside without influencing the original health care function through the arrangement of a sealing film close to the mouth. On the mask made of soft cloth material, a bulge is arranged behind the film to support the partial face around the mouth, so as to provide positioning and space for the consumers to speak better.

Description

Mask or face guard

Technical Field

The invention relates to an anti-gas, dustproof and smoke-proof mask or face mask, in particular to a mask or face mask using a film to transmit sound, which can ensure that the speaking of a consumer can be clearly and loudly transmitted to the outside.

Background

In various sealed or semi-sealed masks or face masks for preventing poison or dust smoke, no matter whether positive air pressure exists or not, the body of the mask or face mask is generally made of filtering materials or hard materials with thickness, sound waves are not easy to transmit when a consumer speaks, other people cannot hear the mask clearly, normal communication is hindered, and a plurality of academic reports exist on the international network. There are also products that use electronic microphones to solve this serious problem, but the unit price and weight are high. The invention is to place an airtight film on the products close to the mouth, so that the sound waves can be easily transmitted out, the communication of the sound and the size can be normally carried out, and the products are economical and practical.

Masks are typically made of meltblown or other fabric to prevent the ingress or egress of droplets, viruses or smoke, but also suffer from poor sound absorption and isolation due to thickness, which significantly reduces the intelligibility of speech sounds (particularly in the high frequency lip sounds). If the mask is made of hard or thick plastic or rubber materials, most sound can be sealed in the mask, and the decibel of the outside is greatly reduced! However, if a piece of film which is not permeable to wind is arranged on the products close to the mouth, sound waves with different frequencies can be easily and completely transmitted, so that communication of the sound waves with different frequencies can be normally carried out, and the products are more convenient or safer for many consumers, especially for people who need to communicate with the sound frequently, such as teachers, firemen, soldiers, medical staff and the like.

Disclosure of Invention

The invention aims to provide a mask or a face guard which is beneficial to sound transmission and does not influence the original health care function.

The mask or face shield of the invention is provided with one or more holes at the position close to the mouth, and the holes are provided with the windproof film, so that the sound transmission is facilitated without influencing the original health care function.

The mask or face guard is a wind-proof film in the hole at the position close to the mouth, and the speaking sound can be easily transmitted out through the vibration of the film, so that the wearer can normally communicate. Meanwhile, the film seals each hole, so that the original health care function can be influenced.

The film can be made of firm plastic film, and various films such as polyester resin (MILAR) have high strength and unit price, and the economical and practical materials are not few, so that the problem is not solved.

There are many ways of applying the film to the mask or face shield, as long as materials and means are used which can be sealed, have no odor and are not harmful to the human body.

In addition, some masks made of soft cloth materials often touch the mouth, which affects speaking and brings discomfort, so that a bulge should be arranged behind the film to prop against part of the face around the mouth, so as to provide positioning and space for a consumer to speak better.

The utility model provides a cutting means for cutting entrance to a cave at gauze mask body, includes handle, axle center portion and cutting portion, axle center portion is the sharp needle that sets up in handle bottom one side, the blade of cutting portion for setting up at handle portion bottom opposite side, and the blade rotates on the gauze mask body around sharp needle and cuts out circular shape entrance to a cave.

The cutting tool repeatedly performs circumferential cutting along the mask body to obtain a clean circular hole. In addition, the cutting tool can also comprise a flat ring with an inner diameter slightly larger than the opening to be cut so as to press the periphery of the soft cloth to cut smoothly. It mainly deals with the common or self-made mask with soft cloth with folding lines, so as to provide a popular method for consumers to use the technical scheme of the invention in DIY.

Drawings

Fig. 1 is a schematic view of a mask of the present invention similar to N95.

FIG. 2 is a schematic view of a general mask band of the present invention for supplying fresh air

FIG. 3 is a schematic view of a thin film of the present invention.

FIG. 4 is a schematic diagram of a module of the present invention adapted to a membrane.

FIG. 5 is a schematic view of a thin film fixing device according to the present invention.

FIG. 6 is a schematic view of an open cover of the film holding device of the present invention.

FIG. 7 is a schematic view of another film holding device of the present invention.

Fig. 8 is a schematic view of a cutting tool for cutting a hole in a mask body according to the present invention.

Fig. 9 is a schematic view of a flat ring structure.

Labeled as: 1, a mask body; 2, a film; 3, peripheral bonding; 4, a transparent hard glue body; 5, soft glue; 6, a mask body; 7, a module; 8, screw thread; 9, a circular upper cover; 10, a hole; 11, short cylinder; 12, a mask body; 13, an extension of the holding distance; 14, pressing; 15, adopting a bonding process; 16, short cylinder; 17, a rim; 18, a second short cylinder; 19, a sharp needle; 20, a handle; 21, a blade; 22, radius; 23, a flat circular ring; and 24, air inlet.

Detailed Description

Example 1

One of the most popular masks at present is a thermal vacuum formed mask made of N95 made of melt-blown fabric containing virus filtering function, as shown in fig. 1, which has a hole corresponding to the area of the open mouth on the mask 1 near the mouth and is sealed with a plastic film 2.

A thin plastic ring is additionally adhered to the outer side of the peripheral bonding part 3 to prevent the thin film from being carelessly scraped off. The adhesive can be nontoxic self-curing epoxy resin and the like.

The larger the area of the membrane, the clearer the sound, but the smaller the area of the filter cloth. Therefore, the area of the film and the area of the filter cloth need to be reasonably set so as to ensure the air permeability of the mask or the face mask while ensuring clear sound transmission and avoid discomfort.

The mask is subjected to processing procedures such as hot vacuum forming, and the like, so that the film and/or the part, which is adhered to the cloth, of the periphery of the film keep the same plane as much as possible (deformation is not required), and the film is prevented from being easy to leak or fall off from the cloth. The film and the mask body can be pre-adhered to be further processed and formed.

Projections (preferably adjustable) should be provided on the rear of the membrane against portions of the face around the mouth to provide location and space for more comfortable and effective speech. The bulges can be adjustable, so that the utility model is convenient to adapt to people with different facial shapes.

Example 2

A mask 6 with positive air pressure, as shown in figure 2, is made of hard transparent plastic as main body 4, soft rubber 5 surrounding edge is added on the periphery to facilitate sealing, clean air is input from outside, a hole is separated at the part close to the mouth, and a plastic film 2 is stuck on the part. If the part is a hard material, the film is easier to be adhered and the finished product is more stable. Many of these products have air supply facilities near the mouth, requiring additional locations.

Example 3

Many common masks, face masks, and self-made masks are available on the market, which provide a self-made (DIY) kit comprising a sheet of film 2 and a sheet of slightly undersized form 7 and a non-toxic self-curing adhesive. The template is used for marking off on the position of the existing mask close to the mouth so as to cut a suitable hole, and the film is sealed and bonded at the cut hole through non-toxic self-curing viscose, so that the wearer can conveniently refit the existing mask. As shown in fig. 3 and 4.

Example 4

The membrane and the mask or visor can also be connected in a mechanically sealed manner, i.e. by means of a fixing device comprising two hard bodies, one being a circular upper cover 9 with an internal thread 8 and a hole in it, the other being a short tube 11 fixed to the body in a sealed manner with an external thread matching the circular upper cover. The two sides are tightly twisted to press the circumferential edge of the film, so that the film can not leak air and can be renewed at any time. As shown in fig. 5 and 6.

Example 5

Basically the same as the embodiment 4, but the inner side of the short cylinder 16 is also provided with a second short cylinder 18, the second short cylinder 18 and the short cylinder 16 are screwed through mutually matched threads, and a protruding flange 17 (commonly called as a flange) is arranged at the inner part of the main body opening part below the second short cylinder; the edges of the main body and the film can be mutually twisted and pressed simultaneously through the upper cover and the second short cylinder, so that the fixing and sealing effects are achieved. The rim can extend to the two sides of the mouth and the like, the position and the distance between the film and the mouth can be kept, and the speaking is convenient. As shown in fig. 7.

In addition, for the convenience cuts the entrance to a cave on the gauze mask body, a cutting means for cutting the entrance to a cave at the gauze mask body, includes handle 20, axle heart portion and cutting portion, axle heart portion is the sharp needle 19 that sets up in handle bottom one side, the cutting portion is for setting up the blade 21 at handle portion bottom opposite side, and the blade rotates on the gauze mask body around sharp needle and cuts out circular shape entrance to a cave. The clean round hole can be obtained by repeatedly cutting along the circumference of the mask body. In addition, the cutting tool may further comprise a flat ring 23 having an inner diameter slightly larger than the desired cutting opening, which presses the periphery of the soft cloth to cut smoothly. As shown in fig. 8 and 9. It mainly deals with the common or self-made mask with soft cloth with folding lines, so as to provide a popular method for consumers to use the technical scheme of the invention in DIY.

Claims

1. A mask or face shield is characterized in that one or more holes are arranged at the position close to the mouth, and the holes are hermetically connected with an airtight film (2) so as to facilitate sound transmission without influencing the original health care function.

2. Mask or face shield according to claim 1 wherein the membrane is sealingly attached to the hole by an adhesive.

3. The mask or facepiece of claim 1 wherein the membrane is sealingly attached to the hole by a mechanical attachment structure.

4. Mask or face shield according to claim 2 wherein the membrane is level with the edge of the opening.

5. Mask or face shield according to any one of claims 1 to 4 wherein a bulge of the face is provided behind the membrane against the periphery of the mouth.

6. The mask or face shield of claim 3 wherein the mechanical connection structure comprises a hard support member disposed around the opening and a hard annular compression member engaging and opposing the hard support member for compressing and sealing the periphery of the membrane.

7. Mask or face mask according to claim 3 characterized in that the mechanical connection structure is a fixing device comprising two hard bodies, one hard body is a circular upper cover (9) with internal thread and a hole on the upper surface, the other hard body is a short tube fixed on the main body with a seal with external thread matching with the circular upper cover; the two sides are tightened to press the circumferential edge of the membrane.

8. The mask or face shield according to claim 7, wherein a second short tube is further provided inside the short tube, the second short tube and the short tube are screwed together by means of mutually matched threads, and a protruding rim is provided below the second short tube and is disposed inside the opening of the main body and extends to the positions beside the mouth.

9. The utility model provides a cutting means for cutting entrance to a cave at gauze mask body, its characterized in that, includes handle (20), axle center portion and cutting portion, axle center portion is sharp needle (19) of setting in handle bottom one side, cutting portion is blade (21) of setting in handle portion bottom opposite side, and the blade rotates on the gauze mask body around sharp needle and can cuts out circular shape entrance to a cave.

10. The cutting tool for cutting the opening in the mask body according to claim 9, wherein the cutting tool further comprises a flat ring (23) having an inner diameter slightly larger than the opening to be cut.