Mask for activities in water

By designing independent frames and lenses, and using soft waterproof sealing wraps as bridging roles, the problems of obstructed vision, visual distortion and poor waterproofing of existing masks are solved, achieving a smaller, more portable and safer mask for underwater activities. .

CN119329724APending Publication Date: 2025-01-21QBAS CO LTD
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Patent Information

Application Number
CN202410934698.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2023-07-21
Filing Date
2024-07-12
Publication Date
2025-01-21

AI Technical Summary

Technical Problem

Due to the structural limitations of the frame and lenses, existing masks for water movements have blocked vision, distorted vision, poor waterproofing, and excessively large, inconvenient and unsafe masks.

Method used

Design a mask for underwater activities. The left and right frames are independent of the lenses. The soft waterproof sealing skirt plays the main role of bridging the frames. The hard bridge is eliminated, the lenses can be close to the eyes, and the weight of the frame and lens areas is reduced. , the waterproof sealing skirt is designed to fit the face better and reduce the burden of watertightness.

Benefits of technology

It achieves a wide field of view, prevents visual distortion and excellent watertight effect, reduces the overall volume and internal volume of the mask, and improves portability and safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a mask for activities in water. The mask comprises two lenses, a waterproof sealing skirt and a fastening device, two glasses frames, a nose mask part and a rear edge are integrally formed on the waterproof sealing skirt. And the two glasses frames are independent from each other. Each glasses frame is provided with an inner side part; and the two lenses are respectively embedded in the two glasses frames in a waterproof manner. And the nose mask part protrudes forwards from the space between the two glasses frames. The rear edge is attached to the face of a user. When the user wears the mask through the fastening device, the inner side parts of the two glasses frames can be respectively adjacent to two eye socket bones of the user.
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Description

Technical Field

[0001] The present invention relates to an underwater activity mask, in particular a mask used for swimming, snorkeling, free diving, fishing and other underwater activities (including above and below the water), and the mask usually covers the user's eyes and nose. Background Art

[0002] The common masks used for underwater activities include swimming goggles that only cover the eyes or snorkeling masks that cover both the eyes and the nose, as well as general diving masks with similar structures to snorkeling masks, training goggles, free diving and spearfishing masks, etc. Such masks can be roughly classified into two types: single-lens type and double-lens type.

[0003] For example, Figure 1A As shown, the single-lens mask 1a comprises a lens 11a, a lens frame 13a, a waterproof sealing skirt 15a and a headband 17a, wherein the lens 11a, the waterproof sealing skirt 15a and the headband 17a must be connected to the lens frame 13a to assemble the single-lens mask 1a. Figure 1B As shown, the double-lens mask 1b includes two independent lenses 11b covering the left and right eyes respectively, a frame 13b, a waterproof sealing skirt 15b and a headband 17b, wherein the lenses 11b, the waterproof sealing skirt 15b and the headband 17b must also be connected with the frame 13b to be assembled into the double-lens mask 1b, which is the same as the single-lens mask 1a, the only difference is that the middle bridging part of the double-lens mask 1b is only composed of the frame 13b, while the middle bridging part of the single-lens mask 1a is composed of the lens 11a and the frame 13a directly and continuously bridged.

[0004] However, whether it is a single-lens mask 1a or a double-lens mask 1b, in order to avoid the hard frame or lens touching the bridge of the nose when wearing the mask, the lens area must protrude forward and be a distance away from the user's eyes. Therefore, in terms of vision, in order to ensure sufficient vision for underwater activities, the size of the lens must naturally be large to a certain extent so as not to be blocked by the frame. In terms of preventing visual distortion, the left and right lenses must be bridged by the hard frame and / or lens to ensure the integrity between the left and right lenses, otherwise the left and right lenses will produce excessive relative displacement or warping due to the water pressure, causing the user's underwater vision to be distorted, or even dizziness.

[0005] In addition, in terms of waterproofing, taking the single-lens mask 1a as an example (however, the double-lens mask 1b also has the same problem), the waterproof sealing skirt 15a must have a watertight rear edge 15a1, which must have a sufficient width to form a waterproof circle around the user's forehead, cheekbones and philtrum, such as Figure 1CHowever, such a structure will generate downward pulling force because the frame 13a and the lens 11a are relatively heavy and far away from the user's eyes UE, affecting the watertight effect of the waterproof sealing skirt 15a. In this case, it is necessary to increase the wall thickness of the waterproof sealing skirt 15a (especially the wall thickness on the two sides and the top) so that the mask 1a can have better wearing balance and stability. Figure 1D shown.

[0006] In addition, because the face contours of users vary greatly due to age and race, especially from the area above the nose bone to the brow, there is a huge difference in height. In order to avoid the difference and prevent the middle area of ​​the frame from contacting the brow, the design does not require the frame 13a and the lens 11a area to be pushed outward, but the bridge part in the middle of the left and right lenses must be designed to be further upward to avoid the protruding brow (such as Figure 1E However, these designs are obviously more disadvantageous to the small size and light weight of the mask.

[0007] Furthermore, based on the above structural limitations, it is understandable that when free diving, fishing or swimming training is performed, the user cannot breathe in the mask that covers the eyes and nose, and the user must take a full breath and hold it to complete the required activities within a certain period of time. If the volume of the mask is too large, the space inside the mask will be compressed and squeezed onto the user's face when facing water pressure, and the user often has to exhale a little gas to balance the pressure inside the mask. Sacrificing breath holding will seriously affect the length of the activity.

[0008] In addition, in the full-face mask structure, if the mask is equipped with an air intake and exhaust structure that can provide breathing, based on the tidal volume and negative pressure theory, the mask volume is too large and there is a disadvantage of rapid accumulation of carbon dioxide, and there are also concerns about safety. These problems are all caused by the mask being too large. It can be imagined that the current design is obviously not conducive to the miniaturization, portability and safety of the mask.

[0009] In view of this, designing a mask for water activities that can partially or fully solve the above-mentioned problems has become a goal that the industry strives to pursue. Summary of the invention

[0010] One object of the present invention is to provide a mask for underwater activities, wherein the left and right frames are substantially independent of each other, and the positions thereof correspond to the left and right orbital bones of the user, respectively, and the left and right lenses are also substantially independent of each other, and correspond to the left and right eyes of the user, respectively. In addition, there is no hard bridge between the left and right frames, and a soft waterproof sealing skirt plays the main role of bridging the left and right frames.

[0011] In terms of visual field, since the lens of the mask can be quite close to the eyes, the lens size does not need to be too large to obtain a wide visual field, and will not be blocked by the frame. In terms of preventing visual distortion, even if there is no hard frame and hard bridge, the left and right frames of the mask can directly abut against the left and right eye socket bones of the user under the action of water pressure, and the two will not produce relative displacement or warping, so visual distortion and dizziness will not occur. Such a structure, because the weight of the frame and lens area is greatly reduced, and the distance from the eyes is greatly reduced, the waterproof sealing skirt will not be pulled by the frame and lens, and the burden of watertightness is naturally reduced. Therefore, in terms of waterproofing, the middle and uppermost part of the waterproof sealing skirt of the present invention can be designed downward to the user's glabella area (the best is within the range of 1 cm above or 1 cm below), and with its soft material, it can meet the height difference of various users in this area, and there is no need to change the wall thickness of the waterproof sealing skirt, and it can provide a very good watertight effect. These designs can significantly reduce the overall volume and internal volume of the mask.

[0012] To achieve the above-mentioned purpose, the present invention discloses a mask for water activities, comprising two lenses, a waterproof sealing skirt and a fastening device. The waterproof sealing skirt is integrally formed with two frames, a nose mask part and a rear edge. The two frames are independent of each other. Each frame has an inner side. The two lenses are waterproofly embedded in the two frames respectively. The nose mask part connects the two frames and protrudes forward from between the two frames. The rear edge can fit the face of a user. The fastening device is arranged between the two outer ends of the waterproof sealing skirt. When the user wears the mask through the fastening device, the inner sides of the two frames can respectively abut the two eye socket bones of the user.

[0013] In one example, the mask further includes two connecting parts. One of the two connecting parts is formed between the nose mask part and one of the two frames, and the other of the two connecting parts is formed between the nose mask part and the other of the two frames. When the user wears the mask, the nose mask part can cover the entire nose of the user, and the two connecting parts substantially cover the cheekbones of the face of the user.

[0014] In one example, the rear edge has a notch portion formed above an upper portion of the nasal mask portion, wherein the notch portion is slightly convex forward to form a raised area so that when the user wears the mask, the raised area can fit a contour defined by a brow and a nasal bone on the user's face.

[0015] In one example, at least one of an upper portion, a lower portion, and the inner portion of each of the frames is provided with a reinforcement structure so that when the user wears the mask, the reinforcement structure fits closely against at least a portion of the two orbital bones of the user.

[0016] In one example, the reinforcement structure is disposed on at least one of the upper portion and the lower portion of each of the two mirror frames, and the reinforcement structure is a recessed area formed integrally by the waterproof sealing skirt.

[0017] In one example, the reinforcement structure is a reinforcement rib fixed to an inner side of the waterproof sealing skirt or formed integrally with the waterproof sealing skirt.

[0018] In one example, the reinforcing rib and the waterproof sealing skirt are made of different materials and have a Shore A hardness between 20 and 60.

[0019] In one example, the reinforcing rib is formed by thickening the waterproof sealing skirt and has a Shore A hardness between 40 and 80.

[0020] In one example, the reinforcement structure is a gasket disposed on the inner side of each of the mirror frames.

[0021] In either example, the fastening device is an elastic headband.

[0022] In any example, the mask further includes a breathing tube that is fluidically connected to an inner cavity of the nasal mask portion.

[0023] In one example, the mask further includes a three-way pipe having a mouthpiece portion, a drainage valve portion, and a nasal passage portion that are fluidically connected to each other, wherein the nasal passage portion is fluidically connected to the inner cavity of the nasal mask portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1A This is an existing single-lens mask.

[0025] Figure 1B It is an existing double-mirror mask.

[0026] Figure 1C Wear for users Figure 1A Schematic diagram of the mask.

[0027] Figure 1D for Figure 1A The partial cross-sectional schematic diagram shows that there is a considerable distance between the lens of the existing single-lens mask and the user, and the waterproof sealing skirt must be thickened.

[0028] Figure 1E for Figure 1A Another partial cross-sectional schematic diagram shows that the existing single-lens mask is limited by the height difference between the user's brow and the nasal bone, and the waterproof sealing skirt must be extended upward or increased in width to move the frame and lens further forward.

[0029] Figure 2A The figure is a front perspective schematic diagram of an embodiment of a mask for underwater activities according to the present invention.

[0030] Figure 2B for Figure 2A A front view of the device with the fastening means omitted.

[0031] Figure 2C For users to wear Figure 2A Schematic diagram of a mask, where the mask is along Figure 2B The cross-sectional view obtained along the section line 2c-2c.

[0032] Figure 2D for Figure 2A A rear perspective schematic diagram of a vehicle, in which the fastening device is omitted.

[0033] Figure 2E For users to wear Figure 2A Schematic diagram of a mask, where the mask is along Figure 2B Cross-sectional view obtained by section line 2e-2e.

[0034] Figure 2F This is a schematic diagram showing that the mask can be folded in half for storage according to the present invention.

[0035] Figure 2G For along Figure 2B Cross-sectional view obtained by section line 2g-2g.

[0036] Figure 2H It is a rear perspective schematic diagram of a mask according to another embodiment of the present invention, wherein the fastening device is omitted.

[0037] Figure 3 It is a three-dimensional diagram of another embodiment of the present invention, wherein the mask has a breathing tube and a three-way tube.

[0038] The following are the descriptions of the reference numerals:

[0039] 1a: Face mask

[0040] 1b: Face mask

[0041] 11a: Lens

[0042] 11b: Lens

[0043] 13a: Frame

[0044] 13b: Frame

[0045] 15a: Waterproof sealing skirt

[0046] 15a1: trailing edge

[0047] 15b: Waterproof sealing skirt

[0048] 17a: Headband

[0049] 17b: Headband

[0050] 2: Mask

[0051] 3: Mask

[0052] 21: Lenses

[0053] 23: Waterproof sealing skirt

[0054] 23a: Frame

[0055] 23a1: medial part

[0056] 23ag: Groove

[0057] 23b: Nasal mask

[0058] 23b1: Upper

[0059] 23c: trailing edge

[0060] 23c1: Notch

[0061] 23d: Connection

[0062] 23e: Outer end

[0063] 23h: Depression

[0064] 23r: Strengthen the structure

[0065] 25: Fastening device

[0066] 31: Breathing tube

[0067] 33: Tee pipe

[0068] 33a: Mouthpiece

[0069] 33b: Drain valve

[0070] 33c: Nasal passage

[0071] 220: Lumen

[0072] 231: Depression

[0073] 233: Strengthening ribs

[0074] 235: Washer

[0075] UE: Eyes

[0076] UB1: orbital bone

[0077] UB2: cheekbones

[0078] UB3: Nasal bone

[0079] UG: between eyebrows DETAILED DESCRIPTION

[0080] The following description of the embodiments is only for explaining the content of the present invention, and is not intended to limit the present invention. Elements not directly related to the present invention are not shown, and the size relationship between the elements in the drawings is only for easy understanding, and is not intended to limit the actual proportion. In addition, the front, back, left, right, inside, outside, front, back, etc. in each description are defined based on the user's direction, which is only a relative relationship and is not intended to limit.

[0081] The present invention relates to a mask for water activities, which may be (but not limited to) swimming goggles, a swimming mask, a diving mask or any form of breathable mask, all of which may adopt the structure of the mask of the present invention, the only difference being whether the mask covers the user's eyes, or the eyes and nose, and whether the nose can breathe freely when covering the user's eyes and nose.

[0082] The following references FIG. 2A to FIG. 2H The following description will be given of an embodiment in which a mask covering the user's eyes and nose (such as a diving mask, a snorkeling mask, or a fishing mask) is used as a representative example. Figure 2A As shown, specifically, the mask 2 for underwater activities includes two lenses 21, a waterproof sealing skirt 23 and a fastening device 25. The fastening device 25 is arranged between the two outer ends 23e of the waterproof sealing skirt 23 (due to the viewing angle, Figure 2A Only the outer end 23e of one side of the waterproof sealing skirt 23 is shown). For example, the fastening device 25 can be an elastic headband, and its two ends are preferably fixed to the two outer ends 23e of the waterproof sealing skirt 23 (usually the outer side of the corresponding frame 23a is the best); but it is not limited to this, and any mechanism that can be used to help the user wear the mask 2 tightly is feasible. To simplify the description, FIG. 2B to FIG. 2E and Figure 2H The fastening device 25 is omitted to illustrate the main structure of the mask 2 in detail and avoid being blocked by the fastening device 25.

[0083] Figure 2BAs shown, the waterproof sealing skirt 23 is preferably one-piece and made of a soft material such as silicone rubber, but it can also be other soft materials with waterproof and stretchable properties, such as thermoplastic rubber (TPR) (for example, thermoplastic elastomer (TPE)), thermoplastic polyurethane (TPU) or polyvinylchloride (PVC) as a base material. In terms of specific structure, the waterproof sealing skirt 23 is integrally formed with two mirror frames 23a, a nose mask portion 23b and a rear edge 23c. The two mirror frames 23a are independent of each other, and each mirror frame 23a has an inner side portion 23a1. The two lenses 21 can be waterproofly embedded in the two mirror frames 23a respectively. The nose mask portion 23b connects the two mirror frames 23a and protrudes forward from between the two mirror frames 23a. The rear edge 23c can fit the face of a user. When the user puts on the mask 2 through the fastening device 25, the inner side portions 23a1 of the two frames 23a can be respectively adjacent to the two eye socket bones UB1 of the user. Figure 2C The term "adjacent" includes "quite close" or "already in contact".

[0084] The waterproof sealing skirt 23 further includes two connecting parts 23d, which are respectively formed between the nose mask part 23b and each frame 23a, that is, the left connecting part 23d is formed between the nose mask part 23b and the frame 23a on the left, and the right connecting part 23d is formed between the nose mask part 23b and the frame 23a on the right. When the user wears the mask 2, the nose mask part 23b can properly cover the entire nose of the user, and the user's nose is accommodated in the inner cavity 220 of the nose mask part 23b. At the same time, the two connecting parts 23d actually cover the position of the cheekbones UB2 of the user's face.

[0085] Unlike the existing mask, the rear edge 23c of the waterproof sealing skirt 23 may have a notch portion 23c1 formed above an upper portion 23b1 of the nose mask portion 23b. The notch portion 23c1 is slightly convex forward to form a raised area, and it is like forming an open portion when viewed from above. Therefore, when the user wears the mask 2, the raised area of ​​the notch portion 23c1 can fit along the contour defined by the eyebrow UG and the nasal bone UB3 of the user's face, such as Figure 2EAs shown. Because of this design, the rear edge 23c of the waterproof sealing skirt 23 of the present invention near the frame 23a no longer needs to be designed as a large upper flat area, and the width of the rear edge 23c of the waterproof sealing skirt 23 can be greatly reduced, and the distance between the frame 23a and the lens 21 and the user can be significantly shortened. In addition, the left and right frames 23a are correspondingly adjacent to the user's orbital bone UB1, and will not be blocked by the brow and nasal bone areas, so that the mask 2 can fit the face more closely. Furthermore, this structure, because it has extremely small and mutually separated frames 23a and lenses 21, and there is no hard connector between the two frames 23a, allows the mask 2 to be simply folded in half, and the storage volume can be minimized, greatly improving the convenience of packaging and carrying. Figure 2F shown.

[0086] More preferably, at least one of the upper part, the lower part and the inner part of each frame 23a is provided with a reinforcing structure 23r. Therefore, when the user wears the mask 2, the reinforcing structure 23r can fit closely to at least a part of the user's eye socket bone UB1. In one embodiment, the reinforcing structure 23r is provided at the lower part of each frame 23a and can be a recessed area (recess) 231, which is integrally formed by the waterproof sealing skirt 23, such as Figures 2A to 2F shown.

[0087] In another embodiment, the reinforcement structure 23r may also be a reinforcement rib 233, which is additionally fixed to the outer side, inner side or integrally formed with the waterproof sealing skirt 23, such as Figure 2G In one embodiment, the reinforcing rib 233 and the waterproof sealing skirt 23 can be made of different materials, and preferably have a Shore A hardness between 20 and 60. In another embodiment, the reinforcing rib 233 and the waterproof sealing skirt 23 can be made of the same material, and the reinforcing rib 233 is formed by thickening the waterproof sealing skirt 23, then the hardness of the entire waterproof sealing skirt 23 preferably has a Shore A hardness between 40 and 80.

[0088] In another embodiment, Figure 2H The reinforcement structure 23r may be a gasket.

[0089] 235 is provided on the inner side portion 23a1 of each frame 23a so as to directly face and be adjacent to the orbital bone UB1 of the user.

[0090] When the user is engaged in water activities, the water pressure will press the mask 2 toward the user's face. At this time, the various reinforcing structures of the recessed area, reinforcing ribs, or gaskets will push against at least a portion of the user's orbital bone UB1, and the mask 2 will fit the face very stably. At this time, the left and right frames 23a and the left and right lenses 21 will not produce relative displacement, and the waterproof effect is further increased, especially in the embodiment using the gasket 235 that completely encircles the orbital bone UB1, because the circumferential gasket 235 is used as the reinforcing structure 23r, it is equivalent to providing a double-layer waterproof mechanism inside and outside the mask 2 (that is, the inside is provided by the gasket 235, and the outside is provided by the waterproof sealing skirt 23), which is more waterproof to the eyes.

[0091] Regardless of the embodiment, the inner edge of each frame 23a can be provided with a groove 23ag for each corresponding lens 21 to be waterproofly embedded therein, or the two frames 23a and the two lenses 21 can be directly integrally formed by injection molding, etc., which are all feasible methods.

[0092] In addition, as mentioned above, the focus of the present invention is that the mask 2 contacts the user and accommodates the user's facial organs (such as eyes and nose), and the purpose or form of the mask 2 is not a question. Figure 3 In a variation shown in the embodiment, the mask 3 of the present invention further comprises a breathing tube 31, which is in fluid communication with the inner cavity 220 of the nasal mask portion 23b. The mask 3 may further comprise a three-way pipe 33, which has a mouthpiece portion 33a, a drainage valve portion 33b and a nasal passage portion 33c, which are in fluid communication with each other, wherein the mouthpiece portion 33a can be held by the mouth of the user, and the nasal passage portion 33c is in fluid communication with the inner cavity 220 of the nasal mask portion 23b. Accordingly, the user can inhale and exhale through the nose through the nasal passage portion 33c, inhale and exhale through the mouthpiece portion 33a, and drain the accumulated water in the mask 3 through the drainage valve of the drainage valve portion 33b. According to this structure, the mask 3 can be a breathable mask with a very small size and extremely convenient to carry.

[0093] The above embodiments are only examples. Any changes, for example, in order to achieve a better waterproof effect and to be suitable for users with more different face shapes, the notch at the rear edge of the waterproof sealing skirt may not be convex forward, but may be flush with the other parts of the rear edge. As long as the notch can flexibly fit the contour defined by the user's brow and nasal bone when the user wears the mask and block the inner cavity of the nasal mask from communicating with the outside world, are all feasible alternatives and are what the present invention intends to protect. In addition, the two lower sides of the nasal mask part 23b may also be provided with a recess 23h to facilitate the user's fingers to pinch the nose and perform Franz flat pressure, such as Figure 2H and Figure 3 As shown, it is also another preferred design measure.

[0094] In summary, the mask for water activities of the present invention can be formed into a single piece with a soft waterproof sealing skirt to independently mount the left and right frames of the left and right lenses, so that there is no hard bridge between the left and right frames and the left and right lenses, and the lenses can be quite close to the eyes, and the lens size does not need to be too large to obtain a wide field of view. Furthermore, the left and right frames can directly abut against the left and right eye socket bones of the user to provide wearing stability, and because the weight of the frame and lens area is greatly reduced, and the distance from the eyes is greatly reduced, the waterproof sealing skirt will not be pulled by the frame and lens, and can provide a very good watertight effect. Therefore, based on these designs, the present invention can significantly reduce the overall volume and internal volume of the mask, and has the advantages of miniaturization, portability, and safety in use.

[0095] The above embodiments are only used to illustrate the implementation of the present invention and to explain the technical features of the present invention, and are not used to limit the protection scope of the present invention. Any changes or equivalent arrangements that can be easily completed by ordinary technicians in the field belong to the scope claimed by the present invention, and the scope of protection of the present invention shall be based on the claims.

Claims

1. A mask for water activities, comprising: Two lenses; a waterproof sealing skirt; and A fastening device is provided between the two outer ends of the waterproof sealing skirt; It is characterized in that The waterproof sealing skirt is integrally formed with: Two mirror frames are independent of each other, and each of the mirror frames has an inner side portion, wherein the two lenses are waterproofly embedded in the two mirror frames respectively; a nose mask portion connected to the two frames and protruding forward from between the two frames; and a rear edge adapted to fit against a user's face; When the user wears the mask through the fastening device, the inner side portions of the two frames can be respectively adjacent to the two eye socket bones of the user.

2. The mask according to claim 1, characterized in that It also includes two connecting parts, one of which is formed between the nose mask part and one of the two frames, and the other of the two connecting parts is formed between the nose mask part and the other of the two frames. When the user wears the mask, the nose mask part can cover the entire nose of the user, and the two connecting parts cover the cheekbones of the user's face.

3. The mask according to claim 2, characterized in that The rear edge has a notch formed above an upper portion of the nose mask portion, wherein the notch bulges forward to form a raised area so that when the user wears the mask, the raised area can fit along a contour defined by a brow and a nasal bone on the user's face.

4. The mask according to claim 1, characterized in that At least one of an upper portion, a lower portion and the inner portion of each of the frames is provided with a reinforcing structure so that when the user wears the mask, the reinforcing structure is closely attached to at least a portion of the two eye socket bones of the user.

5. The mask according to claim 4, characterized in that The reinforcement structure is arranged on at least one of the upper part and the lower part of each of the two mirror frames, and the reinforcement structure is a recessed area formed integrally by the waterproof sealing skirt.

6. The mask according to claim 4, characterized in that The reinforcement structure is a reinforcement rib fixed to an inner side of the waterproof sealing skirt or formed integrally with the waterproof sealing skirt.

7. The mask according to claim 6, characterized in that The reinforcing rib and the waterproof sealing skirt are made of different materials and have a Shore A hardness between 20 and 60.

8. The mask according to claim 6, characterized in that The reinforcing rib is formed by thickening the waterproof sealing skirt and has a Shore A hardness between 40 and 80.

9. The mask according to claim 4, characterized in that The reinforcement structure is a gasket, which is arranged on the inner side of each mirror frame.

10. The mask according to claim 1, wherein: The inner edge of each frame is formed with an annular groove for each lens to be waterproofly embedded therein.

11. The mask according to claim 1, wherein: The two mirror frames and the two lenses are integrally formed by injection molding.

12. The mask according to claim 1, wherein: The fastening device is an elastic headband.

13. The mask according to any one of claims 1 to 12, characterized in that It also includes a breathing tube that is fluidically connected to an inner cavity of the nasal mask portion.

14. The mask according to claim 13, wherein: It also includes a three-way pipe, which has a mouthpiece part, a drainage valve part and a nasal passage part which are fluidically connected to each other, wherein the nasal passage part is fluidically connected to the inner cavity of the nasal mask part.