WO2018103134A1

WO2018103134A1 - Direct exhalation valve and mask with direct exhalation valve

Info

Publication number: WO2018103134A1
Application number: PCT/CN2016/110733
Authority: WO
Inventors: 马斐
Original assignee: 马斐
Priority date: 2016-12-05
Filing date: 2016-12-19
Publication date: 2018-06-14
Also published as: CN106377853A

Abstract

Disclosed is a direct exhalation valve, comprising a valve body (10) and a valve switch (20), wherein the valve body (10) is hollow, a first air outlet (11) and a second air outlet (12) are respectively provided on the top and the outer side of the valve body (10), the valve body (10) is fixedly connected to a mask body (30), and the first air outlet (11) is formed inside a top rim (14) of the valve body (10). The valve switch (20) comprises an exhalation valve (22), the exhalation valve (22) being a one-way valve membrane. The one-way valve membrane is located at the bottom of the top rim (14) and is in contact with a lower surface of the the top rim (14). The size of the one-way valve membrane is greater than that of the first air outlet (11), and the one-way valve membrane covers the first air outlet (11) and forms an overlapping coverage area (23) with the lower surface of the top rim (14) of the valve body (10), the width of the overlapping coverage area (23) being between 0.05 mm and 1 mm. The direct exhalation valve has the advantages of a simple structure, being easy to manufacture, good exhalation effects, and being comfortable to wear.

Description

Direct exhalation valve and direct exhalation valve mask

Technical field

The present invention relates to a mask or nasal mask, and more particularly to a direct exhalation valve and a direct exhalation valve mask.

Background technique

In daily life and production, people often come into the air environment polluted by dust, germs or other toxic and harmful substances. In order to reduce the harm of these polluted air to the human body, people often wear a protective protective mask or mask, but a mask is formed between the mask or the mask and the nasal cavity. In this cavity, the exhaled low oxygenated air will The mixing of clean air filtered through a mask or mask reduces the oxygen content in the air that is again inhaled, affecting the body's absorption of oxygen in the air.

In addition, when the existing mask is exhaled, since the exhaled gas cannot be directly discharged, the wearer feels uncomfortable, feels depressed, and the face has a strong moist heat feeling. In order to consider the accumulation of gas during exhalation, some have a breathing valve on one side of the mask, which can relieve the backlog of gas, which is relatively comfortable compared to a mask that does not normally have a breathing valve, but it cannot solve the timely discharge of exhaled gas. The problem and the inability to eliminate the damp heat of the face and the feeling of nausea.

In order to solve the above problems, the applicant proposed a direct exhalation valve for a mask to the Patent Office in 2015 and obtained an authorization announcement in 2016, which discloses a direct exhalation valve for a mask, mainly including a fixed frame and a direct exhalation valve, the fixation The frame is made of a plastic material, and the fixing frame is mounted on the mask at a position below the nose at a distance from the nostril, and the fixed frame is detachably connected with a direct exhalation valve that cooperates with the fixing frame, and the direct exhalation valve includes a valve body And valve switch, said The valve body is detachably connected with a valve switch matched with the valve body, the valve body is hollow inside, the outer side and the inner side of the valve body are all open, and a plurality of vents are arranged on the valve body, and the valve switch comprises The fixed seat type normally closed valve and the exhalation type valve, the fixed seat type normally closed valve extends into the side frame of the valve body to block the opening in the side frame side of the valve body, and the fixed seat type normally closed valve The side is provided with at least one fixing block for fixing the exhalation valve, and the fixing block is provided with an exhalation valve, and the exhalation valve is a film matched with the shape and size of the top surface of the valve body, and the film is exhaled. Separated from the vent, the exhalation valve is opened, the membrane is in close contact with the top vent of the valve body during inhalation, and the exhalation valve is closed. The mask uses a direct exhalation valve to effectively solve the problems of good exhalation effect and facial moist heat and suffocation in the prior art, but the exhalation valve needs to be connected with the mask through the fixing frame, and the structure thereof is relatively complicated, and the manufacturing and processing are complicated. Moreover, the exhalation valve membrane is easy to adhere to the column between the adjacent vents, and the opening resistance of the valve membrane during the exhalation process is large.

Summary of the invention

The object of the present invention is a direct exhalation valve and a direct exhalation valve type mask which are simpler in structure, convenient in manufacture, good in air outlet effect and comfortable to wear.

The present invention achieves the above objects by the following technical solutions:

a direct exhalation valve, comprising a valve body and a valve switch, wherein the valve body is hollow inside, and a first air outlet and a second air outlet are respectively disposed on the top and the outer side of the valve body, and the valve body is fixedly connected with the mask body. a first air outlet is formed inside the top frame of the valve body, and a normal closed port is matched on the inner side of the valve body, and the valve switch includes a normally closed valve and an exhalation valve, and the normally closed valve The side is installed from the normally closed port to seal the normally closed port and is connected to the valve body. The inner side of the normally closed valve is provided with an exhalation valve, and the exhalation valve is a one-way valve film, and the one-way valve film is located at the bottom of the top frame. and Contacting the lower surface of the top frame, the size of the one-way valve film is larger than the size of the first air outlet, the one-way valve film covers the first air outlet, and forms an overlapping coverage area with the lower surface of the top frame of the valve body. The overlap coverage area has a width of 0.05 mm to 1 mm. The direct exhalation valve of the present invention is composed of a valve body and a valve switch, and is composed of only two components, and the structure thereof is simpler. The valve body is hollow inside, and the first air outlet and the second air outlet are respectively disposed on the top and the outer side, and the normally closed port is disposed on the inner side of the valve body, and the valve switch includes a normally closed valve for blocking the normally closed port and is used for calling The one-way valve membrane of the gas, the normally closed valve in the valve switch is connected to the valve body from the normally closed port on the valve body, and the valve body and the valve switch are convenient to manufacture and assemble. The first air outlet is arranged, and during the exhalation, the one-way valve film is separated from the top frame of the valve body under the impact force of the exhalation, the exhalation valve is opened, and the exhalation flows from the first air outlet to the second air outlet outside the valve body. Outside the rear outlet cover, the first air outlet is provided to effectively ensure the exhalation effect, and the exhalation is discharged in time to ensure that the air in the mask is fresh, refreshing and comfortable to wear. The size of the one-way valve film is larger than the size of the first air outlet, effectively ensuring that the one-way valve film is in close contact with the top frame of the valve body during the suction process, ensuring sealing and preventing contaminated air from the first air outlet. Enter the mask to ensure that the inside of the mask is clean and fresh. The one-way valve film overlaps with the top frame of the valve body and covers a width of 0.05 mm to 1 mm. On the one hand, it effectively ensures that the check valve membrane is in close contact with the valve body during the suction process, and the check valve membrane is prevented from being separated from the valve body. The sealing problem of the check valve film during the inhalation process, on the other hand, effectively ensures that the exhalation is easy to discharge, and the problem of difficulty in exhalation discharge is avoided. When the overlapped coverage area of the check valve film and the top frame of the valve body is less than 0.05 mm, the one-way valve film is easily separated from the top frame of the valve body under the force of suction during the air suction process. Phenomenon, causing contaminated air to enter the mask from the first air outlet, causing the one-way valve membrane to lose one-way The function of the valve; when the one-way valve film and the top border of the valve body overlap the coverage area is greater than 1 mm, the water film may appear due to the overlapping coverage area of the check valve film and the top frame of the valve body during the exhalation process, if the check valve The overlapping coverage area between the membrane and the top frame of the valve body is too large, and the opening resistance of the one-way valve membrane is obviously increased. In severe cases, even the one-way valve membrane cannot be opened, thereby causing difficulty in exhalation.

Further, at least one stopping portion for blocking the upward turning of the one-way valve film is disposed in the top frame, and the stopping portion is located on the air outlet side of the one-way valve film. The setting of the stopper on the top frame effectively ensures that the one-way valve film does not turn up under the action of external force, and avoids the problem that external polluted air entering the mask from the first air outlet due to the upward turning of the one-way valve film The combination of the one-way valve film and the top frame forms an overlapping coverage area, and double-protects the one-way valve film to prevent the one-way valve film from losing the function of the one-way valve, thereby affecting the wearing comfort of the user.

Further, the stopping portion is a protrusion protruding outward from the inner surface of the top frame, and the bottom of the protrusion is in contact with the one-way valve film line or the intermittent line contact or point contact. When the protrusion blocks the one-way valve film with a line contact structure, the protrusion is a stud structure, the protrusion is a triangular column or a polygonal prism, and the bottom rib and the check valve of the triangular column or the polygonal prism The film line contacts the check valve film; when the protrusion stops the check valve film with the intermittent line contact structure, a plurality of notches are formed on the bottom rib of the stud, so that the bottom rib of the stud Forming a discontinuous line structure, the bottom rib of the stud forming a discontinuous line contact with the check valve film to block the check valve film; when the protrusion stops the check valve film by the point contact structure, the convex It is arranged as a bump structure to make the bumps in point contact with the check valve film.

Further, the valve body and the mask body are thermally welded or laser or ultrasonically welded Connected, the connection is stable and fast.

Further, the one-way valve film is made of a plastic film or a polymer material film, and the one-way valve film is an EVA film or a PE film or a PP film or a composite material film.

Further, the thickness of the one-way valve film is 0.02 mm to 0.5 mm, and the thickness and flexibility of the one-way valve film of the thickness range are good, and the valve is directly closed when the inhalation is directly closed, and the valve is directly exhaled when exhaling. turn on.

A direct exhalation valve type mask includes a mask body, and the direct exhalation valve is connected to the mask body, and the distance between the first air outlet of the direct exhalation valve and the air outlet of the nostril is 0 mm to 15 mm. The first air outlet on the direct exhalation valve is located directly below the nostril, and the distance from the nostril air outlet is 0 mm to 15 mm, which effectively ensures that the gas exhaled by the nostril is discharged from the direct exhalation valve in time to ensure the comfort of the mask.

The direct exhalation valve of the present invention has the following beneficial effects as compared with the prior art:

First, the structure is simpler. The direct exhalation valve of the present invention is composed of a valve body and a valve switch, and is composed of only two components, and the structure thereof is simpler;

Secondly, the manufacturing and assembly are convenient. The valve body is hollow inside, and the first air outlet and the second air outlet are respectively disposed on the top and the outer side, and the normally closed port is disposed on the inner side of the valve body, and the valve switch includes a closed normal port. The normally closed valve and the one-way valve membrane for exhalation, the normally closed valve in the valve switch is connected from the normally closed port on the valve body to the valve body, and the valve body and the valve switch are convenient to manufacture and assemble;

Third, the double protection and the suction sealing effect are good. On the one hand, the size of the one-way valve film is larger than the size of the first air outlet, and the one-way valve film forms an overlapping coverage area with the top frame, thereby effectively ensuring The check valve membrane is in close contact with the top frame of the valve body during the suction process to ensure sealing and prevent contaminated air from entering the mask from the first air outlet; on the other hand, the setting of the stop portion on the top frame effectively ensures the single The valve film will not be turned up under the action of external force, avoiding the problem that external polluted air entering the mask from the first air outlet due to the one-way valve film flipping off the top frame, and the check valve film and the top The frame forms overlapping overlapping areas, and double-protects the one-way valve film to prevent the one-way valve film from losing the function of the one-way valve, effectively ensuring that the external gas cannot enter the mask from the one-way valve film, and the suction sealing effect is good. Effectively ensure that the inside of the mask is clean and fresh, and enhance the wearing comfort;

Fourth, the expiratory discharge effect is good, the first air outlet is set, and the exhalation valve is separated from the top frame of the valve body under the impact force of the exhalation process, the exhalation valve is opened, and the exhalation flows from the first air outlet. The second air outlet to the outside of the valve body is arranged outside the outlet cover, and the first air outlet is arranged to effectively ensure the exhalation effect, and the exhalation is timely discharged to ensure that the air in the mask is fresh, refreshing and comfortable to wear;

Fifth, the direct exhalation valve and the mask are connected quickly and stably, and the valve body and the mask body are connected by hot melt welding or laser or ultrasonic welding, and the connection is stable and fast;

Sixth, the one-way valve membrane opening resistance is small. On the one hand, the one-way valve membrane and the top frame of the valve body overlap the coverage area of the gap of 0.05 mm to 1 mm, and the one-way valve membrane opening resistance is small, effectively ensuring exhalation and discharge. To avoid the problem of difficulty in exhalation discharge; on the other hand, the upper surface of the check valve film is placed in contact with the convex line, which effectively reduces the contact area between the check valve film and the protrusion, reduces the water film area, and reduces the call. The opening resistance of the check valve membrane of the gas process ensures that the exhaust in the exhalation process is performed normally, and the comfort of the user is improved.

DRAWINGS

Figure 1 is a schematic view showing the structure of a direct exhalation valve mounted on a mask body according to the present invention;

Figure 2 is an exploded perspective view of the direct exhalation valve of the present invention;

Figure 3 is a schematic structural view of the valve body of Figure 2;

Figure 4 is a schematic view showing the structure of a valve body provided with one, two or three projections;

Figure 5 is a schematic view of the structure of a valve switch provided with one, two or three support columns.

detailed description

In order to enable those skilled in the art to better understand the technical solutions of the present invention, the products of the present invention will be further described in detail below with reference to the embodiments and the accompanying drawings.

As shown in FIGS. 1 to 3, the direct exhalation valve 22 includes a valve body 10 and a valve switch 20. The valve body 10 and the mask body 30 are connected by heat fusion welding or laser or ultrasonic welding, and the connection is firm and fast. The valve body 10 is detachably connected with a valve switch 20 that cooperates with the valve body 10. The valve body 10 is hollow inside, and the top and the outer sides of the valve body 10 are respectively provided with a first air outlet 11 and a second outlet. The valve body 10 is fixedly connected to the mask body 30, the first air outlet 11 is formed inside the top frame 14 of the valve body 10, and the inner side of the valve body 10 is provided with a normally closed mouth matched with the valve switch 20. 13. The valve switch 20 includes a normally closed valve 21 and an exhalation valve 22, and one side of the normally closed valve 21 is inserted from the normally closed port 13 to close the normally closed port 13 and is connected to the valve body 10, the normally closed valve The inner side of the 21 is provided with an exhalation valve 22, which is a one-way valve membrane, and the one-way valve membrane is made of a plastic film or a polymer material film, and the one-way valve film is an EVA film or a PE film or a PP film or a composite film, the check valve film having a thickness of 0.02 mm to 0.5 mm, The one-way valve membrane of the thickness range has good stiffness and flexibility, and is effective to ensure that the direct exhalation valve 22 is closed when inhaling, and the valve 22 is directly opened when exhaling. The one-way valve film is located at the bottom of the top frame 14 and is in contact with the lower surface of the top frame 14. The size of the one-way valve film is larger than the size of the first air outlet 11, and the one-way valve film covers the first air outlet. 11, and an overlapping cover area 23 is formed with the lower surface of the top frame 14 of the valve body 10. The overlap cover area 23 has a width of 0.05 mm to 1 mm. The direct exhalation valve 22 of the present invention is composed of the valve body 10 and the valve switch 20, and is composed of only two members, and the structure thereof is simpler. The valve body 10 is hollow inside, and the first air outlet 11 and the second air outlet 12 are respectively disposed on the top and the outer side, and the normally closed port 13 is disposed on the inner side of the valve body 10, and the valve switch 20 includes a sealing port 13 for blocking the normally closed port 13. The normally closed valve 21 and the one-way valve membrane for exhalation, the normally closed valve 21 of the valve switch 20 is fitted from the normally closed port 13 on the valve body 10 to the valve body 10, and the valve body 10 and the valve switch 20 easy to make and assemble. The first air outlet 11 is disposed, and during the exhalation, the one-way valve film is separated from the top frame 14 of the valve body 10 under the impact force of the exhalation, the exhalation valve 22 is opened, and the exhalation flows from the first air outlet 11 to the valve body 10 The outer second air outlet 12 is arranged outside the rear outlet cover, and the first air outlet 11 is arranged to effectively ensure the exhalation effect, and the exhalation is timely discharged to ensure that the air in the mask is fresh, refreshed and comfortable to wear. The size of the one-way valve film is larger than the size of the first air outlet 11, effectively ensuring that the one-way valve film is in close contact with the top frame 14 of the valve body 10 during the suction process, ensuring sealing and preventing contaminated air from being An air outlet 11 enters the mask to ensure that the inside of the mask is clean and fresh. The one-way valve film overlaps the top frame 14 of the valve body 10 to cover the region 23 with a width of 0.05 mm to 1 mm. On the one hand, it effectively ensures that the one-way valve film is in close contact with the valve body 10 during the suction process, and the one-way valve film is avoided. Disengaging the valve body 10 affects the check valve during the suction process The sealing problem of the membrane, on the other hand, effectively ensures that the exhalation is easy to discharge, and the problem of difficulty in exhalation discharge is avoided. When the check valve film overlaps the top frame 14 of the valve body 10 and the coverage area 23 is less than 0.05 mm, the one-way valve film is easily released from the valve body under the force of the suction during the suction process. 10 phenomenon of the top frame 14, causing contaminated air to enter the mask from the first air outlet 11, causing the one-way valve film to lose the function of the one-way valve; when the one-way valve film overlaps the top frame 14 of the valve body 10 When 23 is larger than 1 mm, a water film may appear due to overlapping of the check valve film with the top frame 14 of the valve body 10 during the exhalation process. If the check valve film overlaps with the top frame 14 of the valve body 10, the coverage area is too large. The opening resistance to the valve membrane will increase significantly. In severe cases, even the one-way valve membrane cannot be opened, which may cause difficulty in exhalation.

As shown in FIG. 2 and FIG. 4 , at least one stopping portion 15 for blocking the upward turning of the one-way valve film is disposed in the top frame 14 , and the stopping portion 15 may be disposed according to requirements or may be Two or three need to be provided, as shown in FIG. 4, the stopper portion 15 is located on the air outlet side of the check valve film. The arrangement of the stopping portion 15 on the top frame 14 effectively ensures that the one-way valve film does not turn up under the action of an external force, and the external contaminated air caused by the upward turning of the one-way valve film is prevented from entering the mask from the first air outlet 11 The internal problem is combined with the one-way valve film and the top frame 14 to form an overlapping coverage area 23, which double-protects the one-way valve film to prevent the one-way valve film from losing the function of the one-way valve, thereby affecting the user's wearing comfort. The problem.

As shown in FIG. 4 , the stopping portion 15 is a protrusion protruding outward from the inner surface of the top frame 14 , and the bottom of the protrusion is in contact with the check valve line or the intermittent line contact or Point contact stop, when the protrusion stops the check valve film with a line contact structure, the protrusion is a pillar structure, The protruding post is a triangular column or a polygonal prism, and the bottom rib of the triangular column or the polygonal prism is in line contact with the one-way valve film to block the one-way valve film; when the protrusion is in the intermittent line contact structure, the one-way valve is blocked In the film, a plurality of notches are formed in the bottom rib of the stud, so that the bottom rib of the stud forms a broken line structure, and the bottom rib of the stud forms a broken line contact with the check valve film to block the unidirectional a valve film; when the protrusion blocks the one-way valve film in a point contact structure, the protrusion is disposed in a bump structure such that the protrusion is in point contact with the check valve film. The one-way valve film is blocked by the line contact stop or the point contact, thereby effectively reducing the contact area between the check valve film and the protrusion, reducing the formation of the water film, thereby reducing the opening resistance of the check valve film during the exhalation process. To ensure that the exhalation process is carried out normally, effectively increasing the comfort of the user.

As shown in FIG. 5, at least one support post 24 for supporting the check valve film is disposed inside the normally closed valve 21 on the valve switch 20, and the support post 24 is located below the check valve film. The support columns 24 may be provided as needed, or two or three may be provided as needed.

As shown in FIG. 1, a direct exhalation valve 22-type mask includes a mask body 30, and the mask body 30 is connected to the above-mentioned direct exhalation valve 22, and the first air outlet 11 on the direct exhalation valve 22 is out of the nostrils. The distance between the ports is 0 mm to 15 mm. The first air outlet 11 on the direct exhalation valve 22 is located directly below the nostril, and the distance from the outlet of the nostril is 0 mm to 15 mm, which effectively ensures that the gas exhaled by the nostril is discharged from the direct exhalation valve 22 in time to ensure the use of the mask. Comfort.

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention; those skilled in the art can refer to the drawings and the above description. The present invention will be implemented in a smooth manner; however, those skilled in the art can use the above-described technical contents to make equivalent changes to the changes, modifications, and evolutions of the present invention without departing from the scope of the present invention. Equivalent embodiments of the invention; at the same time, any changes, modifications and evolutions of the equivalent changes made to the above embodiments in accordance with the essential techniques of the present invention are still within the scope of the technical solutions of the present invention.

Claims

The direct exhalation valve comprises a valve body and a valve switch, the valve body is hollow inside, and the first air outlet and the second air outlet are respectively provided on the top and the outer side of the valve body, wherein the valve body and the mask are respectively The body is fixedly connected, a first air outlet is formed inside the top frame of the valve body, the valve switch comprises an exhalation valve, the exhalation valve is a one-way valve film, and the one-way valve film is located at the bottom of the top frame, and the top Contacting the lower surface of the frame, the size of the one-way valve film is larger than the size of the first air outlet, the one-way valve film covers the first air outlet, and forms an overlapping coverage area with the lower surface of the top frame of the valve body, the overlapping The width of the coverage area is 0.05 mm to 1 mm.
The direct exhalation valve according to claim 1, wherein at least one stopper for preventing the one-way valve film from being turned up is provided in the top frame, and the stopper is located in the one-way valve membrane. Ventilation side.
The direct exhalation valve according to claim 2, wherein the stopping portion is a protrusion that protrudes outward from an inner surface of the top frame, and the bottom of the protrusion is in line contact with the one-way valve film or Intermittent line contact stop or point contact stop.
The direct exhalation valve of claim 3 wherein said projection is a bump or a stud.
The direct exhalation valve according to claim 4, wherein the stud is a triangular column or a polygonal prism, and the bottom rib of the triangular post or the polygonal prism is in line contact with the one-way valve film to block the check valve film.
The direct exhalation valve according to claim 5, wherein the bottom rib of the stud is provided with a plurality of notches.
The direct exhalation valve according to any one of claims 1 to 6, wherein the valve body and the mask body are connected by heat fusion welding or laser or ultrasonic welding.
The direct exhalation valve according to any one of claims 1 to 6, wherein the one-way valve membrane is made of a plastic film or a polymer material film, and the one-way valve film is an EVA film or PE. Film or PP film or composite film.
The direct exhalation valve according to claim 4, wherein said one-way valve membrane has a thickness of from 0.02 mm to 0.5 mm.
A direct exhalation valve type mask, comprising a mask body, characterized in that: the mask body is connected to the direct exhalation valve according to any one of claims 1 to 9, the first on the direct exhalation valve The distance from the air outlet to the outlet of the nostril is 0 mm to 15 mm.