TWM456826U - Check valve and breathing apparatus having the same - Google Patents

Description

Check valve and respirator with check valve

This creation is about a one-way valve and a respirator with a one-way valve, especially a one-way valve and respirator with good air tightness.

According to the respiratory filter device, from the early military gas mask for chemical weapons, to industrial respirators for working environments with harmful gases or suspended particles, or to filter masks for medical care, the history of its evolution shows breathing The use of filtration devices is becoming more widespread. In general, the respiratory filter device mainly comprises a cover and at least one air port, and the air port is an air inlet or an air outlet. The mask is provided for the user to wear on the face, and is mainly used for isolating the respiratory organs (mouth and nose) from the outside. Avoid direct inhalation of outside air. The air inlet is arranged in front of or on both sides of the mask, and the air inlet is mainly connected with a filter element (such as a canister) or a gas supply device, so as to provide clean and non-toxic air to the user. In addition, the exhalation port is also arranged in front of or on both sides of the mask, and the exhalation port is mainly used for providing the user to discharge the exhaled gas.

According to the above, when the user establishes a negative pressure in the mask by inhaling, the air will be guided through the filter and into the mask through the air inlet, and when the user exhales, the air is exhaled from the user's mouth. The air creates a positive pressure in the mask, which causes the exhaled gas to exit the mask through the exhalation port. However, in order to avoid inhalation, the unfiltered air directly enters the mask through the exhalation port, so the breathing filter device will set an exhalation valve at the exhalation port, and the exhalation valve will cause the gas to flow in one direction, so The gas exhaled by the user can escape from the inside of the mask. Moreover, in order to provide the user with high comfort and high safety, when the user exhales, the membrane valve piece of the exhalation valve is easily pushed by the gas exhaled by the user to open the exhalation valve, and the user sucks When the gas is in use, the membrane valve of the exhalation valve can be quickly closed by closing the exhalation valve to prevent harmful gases from entering the interior of the mask.

Please refer to the first, second and third figures, which are a perspective view of a conventional respirator, an exploded view of the exhalation portion, and a cross-sectional view of the exhalation portion. As shown, the conventional respirator 1' includes a cover body 10', two intake portions 12', and an exhalation portion 14'. The mask body 10' is worn by a user on the face to provide an airtight space. Each of the intake portions 12' includes a filter device 122' (such as a canister) and an air inlet (not shown). The filter device 122' is disposed on both sides of the mask body 10', and the filter device 122' with respect to the air inlet of the mask body 10', the air filtered by the filter device 122' enters the interior of the mask body 10' via the air inlet.

The exhalation portion 14' is provided with an exhalation port 140', an exhalation valve 142', and a cover 144'. The exhalation port 140' is provided in the mask body 10'. The exhalation valve 142' includes a fixing member 1420', a body 1426' and a diaphragm 1422'. The seat 1426' is disposed on the exhalation port 140', and the fixing member 1420' is disposed on the base 1426'. The diaphragm 1422' is disposed on the fixing member 1420' to cover the outer side of the fixing member 1420'. . The cover 144' is disposed outside the exhalation valve 142' and is fixed to the base 1426'.

Please refer to FIG. 4A and FIG. 4B together, which are schematic diagrams of the action of the exhalation valve in the inhalation state of the user and the action diagram of the exhalation state. The detailed structure of the exhalation valve 142' will be further described herein. The fixing member 1420 ′ has a first fixing portion 1421 ′ (such as a hole), and the diaphragm 1422 ′ is provided with a second fixing portion 1423 ′ (such as a protrusion), the first fixing portion 1421 ′ and the second fixing portion. 1423' cooperates to fix the diaphragm 1422' to the fixture 1420'. Further, the fixture 1420' has a plurality of holes 1424' for gas to pass therethrough.

As shown in FIG. 4A, when the user inhales, the lower surface of the diaphragm 1422' covers the outer side of the fixing member 1420', and covers the outer side of the holes 1424' to prevent outside air from entering the mask. The interior of the body 10' (as shown in the first figure). The lower surface of the diaphragm 1422' covers the upper surface of the base 1426', so that external air can be prevented from entering the holes 1424' and entering the interior of the mask body 10'. In addition, as shown in FIG. 4B, when the user exhales, the gas exhaled by the user pushes the diaphragm 1422', and the diaphragm 1422' is turned to the outside of the exhalation valve 142', so that the holes The 1424' communicates with the outside to allow the user to exhale the gas outward.

As can be seen from the above, the lower surface of the diaphragm 1422' covers the upper surface of the seat body 1426', and the holes 1424' are sealed to prevent external air from entering the interior of the mask body 10' without being filtered. However, the lower surface of the diaphragm 1422' is not completely flat due to manufacturing factors or weather changing factors, etc., so that the lower surface of the diaphragm 1422' cannot completely cover the upper surface of the housing 1426', so the diaphragm A gap is easily formed between the lower surface of the 1422' and the upper surface of the seat 1426'. In addition, when the respirator 1' is used for a long time or used in a harsh environment, the lower surface of the diaphragm 1422' is easily deformed, so that it cannot completely cover the upper surface of the seat body 1426', so the film There will be a gap between the sheet 1422' and the seat 1426'. In this way, when the user inhales, the harmful external air is not filtered, and the gap between the exhalation valve 142' and the holes 1424' enters the inside of the mask body 10', thereby jeopardizing the user. Therefore, the conventional respirator 1' has an unsafe factor.

Further, since the lower surface of the diaphragm 1422' covers the upper surface of the seat body 1426', the contact area of the diaphragm 1422' with the seat body 1426' is large. When the gas exhaled by the user carries moisture, the water will stay on the lower surface of the diaphragm 1422', so that the lower surface of the diaphragm 1422' can easily adhere to the upper surface of the seat 1426', resulting in the The diaphragm 1422' is not easily pushed by the gas exhaled by the user, so the user needs to exhale more to push the diaphragm 1422', which may cause discomfort to the user.

In addition, when the user exhales, the gas exhaled by the user pushes the diaphragm 1422' through the holes 1424' of the fixing member 1420' to be discharged to the outside of the mask body 10'. Since the sum of the holes 1424' is small, only a portion of the lower surface of the diaphragm 1422' is pushed by the gas exhaled by the user, thus causing a pressure difference between the upper surface and the lower surface of the diaphragm 1422'. Large, so the user needs to exhale more vigorously to discharge the exhaled gas to the outside of the mask body 10', which also causes discomfort to the user's breathing.

In general, the existing exhalation valve has the above problem, that is, there is a gap between the diaphragm and the seat body, and when the user inhales, the harmful external air enters the inside of the mask body through the gap of the exhalation valve. Harm to the user. For example, U.S. Patent No. 2,999,498, which is incorporated herein by reference in its entirety, discloses an exhalation valve comprising a base 8 and a diaphragm 9 having three sealing ribs 8b, 8c and 8d, The sealing ribs 8b, 8c and 8d are disposed on the surface of the seat body 8 like a mountain, and are located outside the opening 81 of the seat body 8. The sealing ribs 8b, 8c and 8d are annular and have different diameters. The diameter of the first sealing rib 8b is larger than the diameter of the second sealing rib 8c, the diameter of the second sealing rib 8c is larger than the diameter of the third sealing rib 8d, and the second sealing rib 8c is located at the first sealing rib 8b Below the third sealing rib 8d is located below the second sealing rib 8c. Viewed from the cross-sectional view, the three sealing ribs 8b, 8c and 8d are arranged in an arc shape. Further, there is a groove between the three sealing ribs 8b, 8c and 8d. The lower surface of the diaphragm 9 covers the three sealing ribs 8b, 8c and 8d, and the actuation is as shown in Figs. 4A and 4B.

Although this patent improves the seat 8, its structure is complicated. This patent covers the three sealing ribs 8b, 8c and 8d of the seat body 8 by the lower surface of the diaphragm 9 to prevent unfiltered external gas from entering the interior of the respirator via the exhalation valve, so the diaphragm There is still a gap between the 9 and the seat body 8, so that when the user inhales, it is still unable to effectively block the unfiltered external gas from entering the inside of the respirator via the exhalation valve. Further, since the diaphragm 9 must cover the three sealing ribs 8b, 8c and 8d of the seat body 8, and the three sealing ribs 8b, 8c and 8d are located outside the opening 81 of the seat body 8, the film The lower surface of the sheet 9 must be larger than the opening 81 of the seat 8. Thus, part of the lower surface of the diaphragm 9 is pushed by the gas exhaled by the user, and part of the lower surface of the diaphragm 9 is not pushed by the gas exhaled by the user, thus causing the upper surface and the lower surface of the diaphragm 9 The pressure difference between the two is large, so the user needs to exhale more vigorously to discharge the exhaled gas to the outside of the respirator, which also causes discomfort to the user.

Therefore, how to break through and solve the problem of the lack of conventional one-way valves, and thus improve their air tightness and economic benefits, is the key project that the industry or intelligent people should try to solve and overcome.

Therefore, the creator of this case has developed a solution to the problem of the lack of the conventional one-way valve and the unsatisfactory design of its structure, hoping to develop a more secure and economical The one-way valve is designed to serve the public and promote the development of this industry.

The purpose of the present invention is to provide a one-way valve, the side wall of the opening of the seat body has a sloped surface, and the diaphragm abuts against the inclined surface, so that when the diaphragm is pressed against the inclined surface, the diaphragm can be sealed to seal the opening of the seat body. To really block the flow of gas.

The purpose of the present invention is to provide a one-way valve, the side wall of the opening of the seat body has a sloped surface, and one surface of the diaphragm is located in the opening to abut against the inclined surface, so that the pressure difference between the two sides of the diaphragm is small, and the use When exhaling, the diaphragm can be easily pushed away by the exhaled gas to enhance the comfort of the user's breathing.

The purpose of the present invention is to provide a respirator with a one-way valve. When the user inhales, the exhalation valve does seal the exhalation port to prevent unfiltered harmful air from entering the inside of the mask through the exhalation port. High security.

The one-way valve of the present invention has a body and a diaphragm, and the base has an opening, and one side wall of the opening has a slope, and the diaphragm is located at the opening and abuts the slope.

The respirator of the present invention has a cover body, a body and a diaphragm. The mask body is provided with a gas port. The seat body is disposed at the air port, and the seat body has an opening, and the opening is connected to the air port. One side wall of the opening has a slope, and the diaphragm is located at the opening and abuts the slope.

Conventional technology:
1'‧‧‧Respirator
10'‧‧‧ mask body
12'‧‧‧Intake Department
122'‧‧‧Filter device
14'‧‧‧Exhalation Department
140'‧‧‧Exhalation
142'‧‧‧Exhalation valve
1420'‧‧‧Fixed parts
1421'‧‧‧First Fixed Department
1422'‧‧‧ diaphragm
1423'‧‧‧Second fixed department
1424'‧‧‧ Hole
1426'‧‧‧ body
144'‧‧‧ Cover
8‧‧‧ body
8b‧‧‧ sealing ribs
8c‧‧‧ sealing ribs
8d‧‧‧ sealing ribs
81‧‧‧ openings
9‧‧‧ Film Creation:
1‧‧‧Respirator
10‧‧‧ mask body
102‧‧‧air inlet
104‧‧‧Exhalation
11‧‧‧
111‧‧‧ openings
1111‧‧‧First entrance
1113‧‧‧Second entrance
1115‧‧‧ outlet
113‧‧‧Bevel
12‧‧‧Fixed parts
122‧‧‧First Fixed Department
124‧‧‧ holes
14‧‧‧ diaphragm
141‧‧‧ first surface
142‧‧‧Second fixed department
143‧‧‧ second surface
145‧‧‧ side surface
149‧‧‧ side surface
15‧‧‧ cover
151‧‧‧ hole
152‧‧‧First Fixed Department
16‧‧‧Filter device
18‧‧‧ Strength
19‧‧‧ Strength
20‧‧‧ Strength

The first figure is a perspective view of a conventional respirator;
The second figure is an exploded view of the exhalation section of the prior art;
The third figure is a cross-sectional view of the exhalation portion of the prior art;
The fourth A diagram is a schematic diagram of the action of the conventional exhalation valve in the inhalation state of the user;
The fourth B diagram is a schematic diagram of the action of the conventional exhalation valve in the exhalation state of the user;
Figure 5 is a cross-sectional view of another prior art exhalation valve;
Figure 6 is a perspective view of a respirator of one embodiment of the present invention;
The seventh drawing is an exploded view of the exhalation portion of one embodiment of the present creation;
Figure 8 is a cross-sectional view of the exhalation portion of one embodiment of the present creation;
Figure 9 is a schematic view showing the action of the diaphragm of one embodiment of the present invention in a state of inhalation by a user;
Figure IX is a schematic view showing the action of the diaphragm of one embodiment of the present invention in the state of exhalation of the user;
The tenth drawing is a cross-sectional view of another embodiment of the present creation; and the eleventh drawing is a cross-sectional view of still another embodiment of the present creation.

In order to give your reviewers a better understanding and understanding of the structural features and the efficacies achieved, please follow the examples and the detailed descriptions to illustrate:

There is a gap between the diaphragm of the conventional exhalation valve and the seat body, which causes unfiltered harmful or suspended particles to enter the inside of the mask, thereby jeopardizing the user and between the two sides of the diaphragm. The pressure difference is large, causing discomfort to the user's breathing, so the creator designed this check valve to achieve high safety and improve breathing comfort.

Please refer to the sixth, seventh and eighth figures, which are a perspective view of the creation of the respirator, an exploded view of the exhalation section and a cross-sectional view of the exhalation section. As shown in the figure, the present invention has a one-way valve respirator 1 including a cover body 10 and at least one check valve. The check valve includes a body 11, a fixing member 12 and a diaphragm 14. The mask body 10 is provided with at least one air port. The air port of the embodiment is exemplified by an air inlet 102 and an air outlet 104. The air inlet 102 communicates with a filtering device 16 for filtering external harmful air or air with suspended particles. The exhalation port 104 can discharge the air exhaled by the user. The seat body 11 is disposed at the air port. In this embodiment, the seat body 11 is disposed at the air outlet 104.

The opening 11 is connected to the air port 104. The opening 111 of the base 11 has a slope 113. The slope is inclined. 113 faces the outer side of the mask body 10. In an embodiment of the present invention, the seat body 11 and the mask body 10 are integrally formed, that is, directly formed on the air outlet of the mask body 10. In addition, as shown in FIG. 9A, the opening 111 has a first inlet 1111 and a second inlet 1113. The first inlet and outlet 1111 is larger than the second inlet and outlet 1113. The gas exhaled by the user is discharged to the outside of the mask body 10 via the second inlet and outlet 1113 and the first inlet and outlet 1111. A cover 15 is placed on the base 11. The cover 15 has a plurality of holes 151 for the gas to be discharged.

In addition, the fixing member 12 is disposed in the seat body 11 and located in the opening 111, and the fixing member 12 is provided with a first fixing portion 122. The diaphragm 14 is disposed on the outer side of the fixing member 12, that is, the diaphragm 14 is disposed on the seat body 11 and located in the opening 111, and the diaphragm 14 is provided with a second fixing portion 142, the second fixing portion. The 142 is fixed to the first fixing portion 122. In this embodiment, the first fixing portion 122 is a fixing hole and the second fixing portion 142 is a fixing column. The first fixing portion 122 and the second fixing portion 142 may also be other connections. Fixed structure. The first fixing portion 122 is disposed at the center of the fixing member 12, and the second fixing portion 142 is disposed at the first fixing portion 122, so that the diaphragm 14 can be fixed to the fixing member 12.

The diaphragm 14 has a first surface 141, a second surface 143 and a side surface 145. The side surface 145 is located between the first surface 141 and the second surface 143, and as shown in FIG. The second surface 143 is smaller than the first inlet and outlet 1111 and larger than the second inlet and outlet 1113. Therefore, the diaphragm 14 is located in the opening 111, and the edge of the second surface 143 connected to the side surface 145 is opposite to the slope 113. . The diaphragm 14 can also abut the uppermost end of the inclined surface 113, and the diaphragm 14 is not entirely located in the opening 111, and only a part of the diaphragm 14 is located in the opening 111, for example, the diaphragm 14 Second surface 143.

Please refer to the ninth A and ninth B drawings, which are cross-sectional views taken along the line AA' of the seventh figure. The ninth A and ninth B diagrams show the operation of the diaphragm 14 of the check valve provided in the exhalation port 104 in the inhaled state and the exhaled state of the user. Further, the state of use of the respirator with the one-way valve of the present invention will be further explained. When the user inhales, the interior of the mask body 10 assumes a negative pressure state, and outside air enters the mask body 10 via the filter device 16 and the air inlet 102 (as shown in FIG. 6). At this time, the diaphragm 14 of the one-way valve disposed in the exhalation port 104 abuts against the inclined surface 113 of the seat body 11 to prevent outside air from entering the mask body 10 via the exhalation port 104.

Moreover, since the diaphragm 14 is subjected to the suction of the user, the diaphragm 14 is equivalent to being subjected to a downward force 18, and the downward force 18 is decomposed into two forces 19 and 20. The force 19 will be perpendicular to the ramp 113 and the force 20 will be parallel to the ramp 113. The force 19 and 20 are applied to the diaphragm 14, and the diaphragm 14 abuts against the inclined surface 113, and is in close contact with the inclined surface 113, so that there is no gap between the diaphragm 14 and the inclined surface 113, and it will be completely The exhalation port 104 is sealed to increase the airtightness effect to prevent outside air from entering the mask body 10 via the exhalation port 104, so that the user is provided with excellent safety to protect the user.

In addition, in another embodiment of the present invention, a portion of the first surface 141, a portion of the second surface 143, or a portion of the side surface 145 or all of the side surface 145 of the diaphragm 14 of the present invention may also abut the The inclined surface 113, or a portion of the first surface 141, a portion of the second surface 143, and the side surface 145 are both opposite to the inclined surface 113, so that the diaphragm 14 completely seals the exhalation port 104 when the user inhales. The outside air is prevented from entering the mask body 10 via the exhalation port 104.

As shown in FIG. BB, when the user exhales the gas, the inside of the mask body 10 assumes a positive pressure state, and the exhaled gas pushes the diaphragm 14, and at this time, the diaphragm 14 is fixed except where it is fixed. The diaphragm 14 is turned up to the outside, so that the exhaled gas can be easily discharged from the exhalation port 104 without being obstructed by the diaphragm 14. Since the diaphragm 14 of the present invention has a small area contacting the inclined surface 113, the diaphragm 14 does not adhere to the seat body 11 due to moisture remaining in the diaphragm 14, so that the user is easily used when exhaling gas. The exhaled gas is pushed away to improve the comfort of the user's breathing.

In addition, referring to FIG. 9A, the position of the diaphragm 14 in contact with the inclined surface 113 encloses an air outlet 1115, and the air outlet 1115 is opposite to the entire second surface 143 of the diaphragm 14. As shown in FIG. BB, when the user exhales the gas, the gas flows to the air outlet 1115 to push the diaphragm 14. Since all of the second surface 143 is opposite to the air outlet 1115, the gas exhaled by the user pushes the entire second surface 143. That is to say, the gas exhaled by the user acts on the entire second surface 143, so the pressure difference between the first surface 141 and the second surface 143 is small, so that the diaphragm 14 can be easily used by the user. The exhaled gas is pushed away to improve the comfort of the user's breathing. In this embodiment, the maximum air outlet area of the air outlet 1115 is equal to the area of the second surface 143 of the diaphragm 14.

As can be seen from the above, the present invention seals the exhalation port 104 by the diaphragm 14 abutting against the inclined surface 113. However, the existing one-way valve covers the surface of the seat with the surface of the diaphragm and seals the exhalation port. When the surface of the diaphragm is not flat, there will be a gap between the surface of the diaphragm and the surface of the seat, so the airtight effect is poor, so that the outside air which is harmful or suspended particles easily enters the inside of the mask through the exhalation port. . The present invention solves the above-mentioned drawbacks, because the side wall of the body 11 of the present invention has the inclined surface 113, and the diaphragm 14 abuts the inclined surface 113, so that the diaphragm 14 can completely seal the call when the user inhales. The air port 104 is such that the outside air can enter the inside of the mask body 10 through the exhalation port 104, thereby improving the safety of the user.

Refer to the seventh figure, the ninth A picture and the ninth B picture. As shown, the fixing member 12 mainly fixes the diaphragm 14. Since the fixing of the first fixing portion 122 and the second fixing portion 142 is a single point, the diaphragm 14 can be moved without being fixed to facilitate the gas discharge. When the user exhales, the gas exhaled by the user will push the diaphragm 14 away from the fixed position and discharge it outward. In this embodiment, as shown in FIG. B, the outer edge of the diaphragm 14 is pushed away by the gas exhaled by the user and discharged outward. The fixing member 12 is not limited to a specific shape, and it is only necessary to fix the diaphragm 14. The fixing member 12 of the embodiment may be in the form of a plate (circular plate), and the fixing member 12 is provided with a plurality of holes 124 for exhausting the gas to the exhalation port 104 (as shown in the sixth figure). Therefore, the holes 124 are not limited in size and number, and the fixing member 12 can support the diaphragm 14 without being provided with the holes 124. In addition, the fixing member 12 may be additionally disposed in the seat body 11, or the seat body 11 and the fixing member 12 may be integrally formed.

Since the diaphragm 14 of the present invention is pressed against the inclined surface 113 under the force, there is no gap between the diaphragm 14 and the inclined surface 113. Therefore, external air can be completely prevented from entering the inside of the mask body 10 via the exhalation port 104.

Please refer to the tenth figure, which is a cross-sectional view of another embodiment of the present creation. As shown in the figure, it is further changed based on the above embodiment. The side surface 149 of the diaphragm 14 of this embodiment has a circular cross section, so that the area of the diaphragm 14 against the inclined surface 113 can be increased. To increase the effect of airtightness.

Please refer to FIG. 11 , which is a cross-sectional view of still another embodiment of the present creation. As shown in the figure, the diaphragm 14 of this embodiment is disposed on the cover 15, so that the cover 15 fixes the diaphragm 14 as a fixing member. The cover body 15 has a first fixing portion 152 , and the second fixing portion 142 of the diaphragm 14 is fixed to the first fixing portion 152 . In this embodiment, the first fixing portion 152 is a fixing hole and the second fixing portion 142 is a fixing column. The first fixing portion 152 and the second fixing portion 142 may also be other connections. Fixed structure. The second fixing portion 142 is disposed on the first fixing portion 152 , so that the diaphragm 14 can be fixed to the cover 15 and disposed on the base 11 .

The one-way valve of the present invention is mainly for the problems of poor airtightness of the conventional one-way valve, large pressure difference between the two sides of the diaphragm, and large area of the diaphragm contact seat. The creation enhances the airtight effect by the diaphragm against the inclined surface of the seat body, and one surface of the diaphragm can be completely pushed by the gas exhaled by the user, and the pressure difference between the two sides of the diaphragm is reduced. When the one-way valve of the present invention is used as an exhalation valve for the respirator, the unfiltered external gas enters the inside of the respirator through the exhalation port when the user inhales, so the respirator has excellent safety. . In addition, since the pressure difference between the two side surfaces of the diaphragm is small, the user's comfort in breathing is improved. In addition, since the area of the diaphragm contacting the seat body is small, the diaphragm does not adhere to the seat body due to moisture remaining in the diaphragm, so that the diaphragm is easily pushed by the gas exhaled by the user, thereby improving the comfort of the user. degree.

In addition, the foregoing embodiment adopts a check valve as an exhalation valve and is disposed at the exhalation port. The bevel and the diaphragm of the present invention can also be reversely disposed at the air inlet, so that the one-way valve can be used as Inhalation valve, so the one-way valve of this creation can be used as an exhalation valve or an inhalation valve of a respirator. In addition, the one-way valve of the present invention can be applied to other devices without being limited to a respirator.

However, the above descriptions are only examples of the present invention, and are not intended to limit the scope of the present invention, and all changes and modifications are made to the shapes, structures, features, and spirits described in the scope of the patent application. It should be included in the scope of the patent application for this creation.

This creative department is a novelty, progressive and available for industrial use. It should meet the requirements of patent applications stipulated in China's Patent Law. It is undoubtedly proposed to create patents according to law, and the Prayer Bureau will grant patents as soon as possible. prayer.

104‧‧‧Exhalation

11‧‧‧

111‧‧‧ openings

113‧‧‧Bevel

12‧‧‧Fixed parts

122‧‧‧First Fixed Department

14‧‧‧ diaphragm

141‧‧‧ first surface

142‧‧‧Second fixed department

143‧‧‧ second surface

145‧‧‧ side surface

Claims (20)

A check valve comprising:
a body having an opening, a side wall of the opening having a slope; and a diaphragm positioned at the opening and abutting the slope. The one-way valve of claim 1, wherein the diaphragm has a first surface, a second surface and a side surface, the side surface being located between the first surface and the second surface, The first surface, the second surface or/and the side surface abuts the slope. The one-way valve of claim 1, wherein the diaphragm has a first surface, a second surface and a side surface, the side surface being located between the first surface and the second surface, An edge of the second surface that is joined to the side surface abuts the slope. The one-way valve of claim 1, wherein the opening has a first inlet and a second inlet, the first inlet is larger than the second inlet, and a surface of the diaphragm is smaller than the first inlet and the inlet It is larger than the second inlet and is located in the opening and abuts the slope. The one-way valve of claim 1, wherein the diaphragm is subjected to a force parallel to one of the slopes to abut the slope. The one-way valve of claim 1, wherein the diaphragm is in contact with the inclined surface of the opening to form an air outlet, the air outlet being relative to the surface of one of the diaphragms. The one-way valve according to claim 1, which further comprises:
A fixing member is disposed on the seat body, and the diaphragm is disposed on the fixing member. The one-way valve of claim 1, wherein the diaphragm has a first surface, a second surface and a side surface, the side surface being located between the first surface and the second surface, The side surface has a circular cross section. A respirator with a one-way valve, the system comprising:
a cover body provided with at least one air port;
a body disposed at the air port, the base body having an opening communicating with the air port, a side wall of the opening having a sloped surface, and a diaphragm located at the opening and abutting the sloped surface. The respirator of claim 9, wherein the diaphragm has a first surface, a second surface and a side surface, the side surface being located between the first surface and the second surface, the A surface, the second surface or/and the side surface abuts the slope. The respirator of claim 9, wherein the diaphragm has a first surface, a second surface and a side surface, the side surface being located between the first surface and the second surface, the An edge of the two surfaces connected to the side surface abuts the slope. The ventilator of claim 9, wherein the opening has a first inlet and a second inlet, the first inlet is larger than the second inlet, and a surface of the diaphragm is smaller than the first inlet and larger than The second inlet and outlet are located in the opening and abut the slope. The respirator of claim 9, wherein the diaphragm is subjected to a force parallel to one of the slopes to abut the slope. The respirator of claim 9, wherein the diaphragm is in contact with the inclined surface of the opening to form an air outlet, the air outlet being relative to a surface of one of the diaphragms. The respirator of claim 9 further comprising:
A fixing member is disposed on the seat body, and the diaphragm is disposed on the fixing member. The respirator of claim 15 , wherein the fixing member has a plate shape, and the fixing member has a plurality of holes, the fixing member is provided with a first fixing portion, and the diaphragm is provided with a second fixing portion. The second fixing portion is fixed to the first fixing portion. The respirator of claim 15, wherein the fixing member is a cover and is disposed on the base. The respirator of claim 9, wherein the seat body is integrally formed with the mask body. The respirator of claim 9, wherein the diaphragm has a first surface, a second surface and a side surface, the side surface being located between the first surface and the second surface, the side The cross section of the surface is round. The ventilator of claim 9, wherein the vent is an exhalation port or an air inlet.