Pressure relief mouthpiece and water sport tool including the same

Abstract

To provide a pressure relief mouthpiece of a water sport tool including a connection part that is stored in a mouth of a user, has an annular curved wall, and is formed with a first hollow structure and a second hollow structure in right and left of the annular curved wall.SOLUTION: Hollow structures each include: an upper wall; a lower wall facing the upper wall; an inner wall connecting the upper wall and the lower wall; and a restriction wall arranged from the inner wall upward or downward. When a connection part is stored in a mouth of a user, some teeth of the user contact the upper wall and the lower wall of the hollow structures.SELECTED DRAWING: Figure 2A

Description

[Technical Field]

[0001] The present invention relates to a pressure relief mouthpiece for water sports equipment used in water activities (including both surface and underwater activities), such as swim training, snorkeling, scuba diving, and the like. [Background technology]

[0002] Currently, a variety of water sports equipment is commercially available, including swimming goggles, snorkeling masks, and oxygen supply equipment for scuba diving. Many of these devices require a mouthpiece, including breathing tubes for swimming training, breathing tubes for two-piece snorkel masks, and even two-stage regulators and octopuses for scuba diving. For example, FIG. 1A shows a one-piece breathing tube 101 for swimming training, with a mouthpiece M1 attached to its lower end. Furthermore, FIG. 1B shows a two-piece breathing tube 102 for a snorkel mask, with a mouthpiece M2 attached to its lower end.

[0003] To improve the comfort of mouthpieces, manufacturers are currently implementing various improvements to the contact surfaces of mouthpieces. For example, they are incorporating non-slip structures into the surfaces that come into contact with the user's teeth, or using softer, more comfortable materials (e.g., gel-filled pouches) for the mouthpiece components to reduce the strain on the user's teeth when biting. For example, as shown in Figure 1C, mouthpiece M3 features multiple concave-convex patterns C1 on the teeth-contacting surface F1. However, these improvements are based on the assumption that the user's teeth will bite the mouthpiece strongly.

[0004] However, in actual use, the most comfortable position for a user to wear a mouthpiece is when the upper and lower jaws (i.e., the upper and lower teeth) are relaxed, with a slight gap between them. This position (i.e., when the user's teeth do not bite the mouthpiece too hard) allows for longer periods of activity. Conversely, if the user continues to bite too hard, the muscles around the mouth will quickly become sore, affecting the enjoyment of snorkeling. Therefore, because snorkelers do not bite the mouthpiece too hard for most of their activities, improvements made to the tooth-contact surface of the mouthpiece have very limited effect, and existing improvements still do not meet practical needs. To address the above issues, some manufacturers incorporate a bridge B1 into the mouthpiece M4, as shown in Figure 1D. Even when the user relaxes their mouth to chew, the bridge B1 supports the user's palate and prevents the mouthpiece from slipping off. However, this design causes discomfort to the soft tissue of the user's palate and creates a noticeable foreign body sensation in the oral cavity.

[0005] Therefore, improving the mouthpiece structure to solve some or all of the above problems has become a research and development goal in the industry. Summary of the Invention [Problem to be solved by the invention]

[0006] The primary objective of the present invention is to provide a pressure relief mouthpiece for water sports equipment, in which each side wall of the mouthpiece is formed as a hollow structure, and the hollow structure has an upper wall and a lower wall spaced apart from the upper wall. This design essentially forms a cushion space between the upper and lower walls, allowing the user's upper and lower teeth to elastically abut against the upper and lower walls, respectively, and allowing the upper and lower teeth to move closer or further away from each other, thereby maintaining a natural, slightly open mouth. This allows the user to stably and durable hold the mouthpiece. [Means for solving the problem]

[0007] To achieve the above object, the present invention discloses a pressure relief mouthpiece for water sports equipment. The pressure relief mouthpiece includes a first connecting portion configured to connect to the water sports equipment and a second connecting portion configured to be received in a user's mouth and communicating with the first connecting portion. The second connecting portion has an annular curved wall. The annular curved wall has a first hollow structure and a second hollow structure on its left and right sides, respectively. The first hollow structure includes a first upper wall, a first lower wall opposite the first upper wall, a first inner wall connecting the first upper wall and the first lower wall, and first limiting walls disposed upward and downward from the first inner wall. The second hollow structure includes a second upper wall, a second lower wall opposite the second upper wall, a second inner wall connecting the second upper wall and the second lower wall, and second limiting walls disposed upward and downward from the second inner wall. When the second connecting portion is accommodated in the user's mouth, the user's upper left and lower left dental rows are configured to contact the first upper and lower walls of the first hollow structure, respectively, and the user's upper right and lower right dental rows are configured to contact the second upper and lower walls of the second hollow structure, respectively.

[0008] In one example, the first hollow structure has a first opening defined by a first upper wall, a first lower wall, and a first inner wall, and the second hollow structure has a second opening defined by a second upper wall, a second lower wall, and a second inner wall.

[0009] In any of the above examples, each of the first opening and second opening has a width in the range of 2.2 mm to 15 mm, and each of the first upper wall, second upper wall, first lower wall and second lower wall has a thickness in the range of 0.8 mm to 5 mm.

[0010] In any of the above examples, the first hollow structure and the second hollow structure each have a rounded U-shaped, angular U-shaped, or V-shaped cross section.

[0011] In any of the above examples, the first hollow structure has a first reinforcing device and the second hollow structure has a second reinforcing device.

[0012] In one embodiment, the first reinforcing device comprises at least one first transverse rib arranged between a first upper wall and a first lower wall of the first hollow structure, and the second reinforcing device comprises at least one second transverse rib arranged between a second upper wall and a second lower wall of the second hollow structure.

[0013] In one embodiment, the first reinforcing device comprises at least one first longitudinal rib arranged between a first upper wall and a first lower wall of the first hollow structure, and the second reinforcing device comprises at least one second longitudinal rib arranged between a second upper wall and a second lower wall of the second hollow structure.

[0014] In one embodiment, the first reinforcing device comprises a plurality of first protrusions arranged between a first upper wall and a first lower wall of the first hollow structure, and the second reinforcing device comprises a plurality of second protrusions arranged between a second upper wall and a second lower wall of the second hollow structure.

[0015] In any of the above examples, the first hollow structure and the second hollow structure are each detachably coupled to the left and right sides of the annular curved wall, respectively.

[0016] In either of the above embodiments, the left and right sides of the annular curved wall each have a groove structure formed thereon, which increases the range of lateral movement of each of the first and second hollow structures.

[0017] In any of the above embodiments, a multi-fold structure is further provided between the first connecting portion and the second connecting portion, which is integrally formed to increase the degree of bending freedom of the second connecting portion relative to the first connecting portion.

[0018] Further, based on the same objectives as above, the present invention discloses water sports equipment comprising a mask, a breathing tube, and a pressure relief mouthpiece according to any of the above embodiments. The mask is configured to cover the user's eyes and nose. The breathing tube has upper and lower ends. The upper end provides an air inlet and an air outlet. A fastener is provided between the upper and lower ends for connection to the mask. The pressure relief mouthpiece is provided at the lower end of the breathing tube. [Brief explanation of the drawings]

[0019] [Figure 1A] 1 is a schematic perspective view of a user wearing a conventional swimming training breathing tube. [Figure 1B] FIG. 1 is a schematic perspective view of a conventional breathing tube mouthpiece. [Figure 1C] FIG. 1 is a schematic perspective view of another conventional mouthpiece, which has a plurality of uneven anti-slip structures on the surface that comes into contact with the user's teeth. [Figure 1D] 1 is a schematic perspective view of yet another conventional mouthpiece in which a bridge is provided to be pressed against the upper jaw of the user. [Figure 2A] 1 is a schematic perspective view of a pressure relief mouthpiece according to an embodiment of the present invention. [Figure 2B] 2B is a schematic top view of FIG. 2A, in which the openings of the hollow structures on both sides of the pressure relief mouthpiece are rectangular U-shaped. [Figure 2C] 10 is a schematic top view of a pressure relief mouthpiece according to another embodiment, in which the openings of the hollow structures on both sides of the pressure relief mouthpiece are V-shaped. [Figure 2D] 10 is a schematic top view of a pressure relief mouthpiece according to yet another embodiment, in which the openings of the hollow structures on both sides of the pressure relief mouthpiece are U-shaped. [Figure 3A] 1 is a schematic perspective view of a pressure relief mouthpiece according to an embodiment of the present invention, in which the reinforcing device disposed between the upper and lower walls of the hollow structure is a transverse rib. [Figure 3B] 1 is a schematic perspective view of a pressure relief mouthpiece according to another embodiment, in which the reinforcing device disposed between the upper and lower walls of the hollow structure is a longitudinal rib. [Figure 3C] 10 is a schematic perspective view of a pressure relief mouthpiece according to yet another embodiment, in which the reinforcing device disposed between the upper and lower walls of the hollow structure is a plurality of protrusions. [Figure 3D] 10 is a schematic perspective view of a pressure relief mouthpiece according to yet another embodiment, showing the hollow structure as a separate, detachable part. [Figure 3E] 10 is a schematic perspective view of a pressure relief mouthpiece according to yet another embodiment, showing groove structures formed on the left and right sides of the annular curved wall. FIG. [Figure 3F] 10 is a schematic perspective view of a pressure relief mouthpiece according to yet another embodiment, showing a multi-fold structure formed between the first and second connecting portions. FIG. [Figure 3G] 10 is a schematic perspective view of a pressure relief mouthpiece according to yet another embodiment, showing a groove structure and a multi-fold structure. [Figure 4A] 1 illustrates an exemplary variation of the multi-fold structure of the present invention. [Figure 4B] 1 illustrates an exemplary variation of the multi-fold structure of the present invention. [Figure 4C] 1 illustrates an exemplary variation of the multi-fold structure of the present invention. [Figure 5] 1 is a schematic perspective view showing a user wearing water sports equipment according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0020] It should be understood that the following description of the embodiments is intended to explain the contents of the present invention and does not limit the present invention as defined in the claims. Elements not directly related to the present invention are omitted, and the dimensions of all elements in the drawings are merely for ease of understanding and are not intended to limit the actual scale. Adjectives such as "upper," "lower," "front," "rear," "left," "right," "inner," and "outer" refer to the user's own directions defined in the description. These are relative relationships and are not limiting. When the names of elements include "first" and "second" and only the detailed structure of one is described, it means that both have the same structure, particularly a symmetrical structure. Therefore, further repetition of the description will be omitted below.

[0021] As shown in FIG. 2A, the present invention provides a pressure relief mouthpiece 2 that can be used with water sports equipment such as a snorkeling mouthpiece breathing tube, or any water sports equipment that has a mouthpiece.

[0022] The pressure relief mouthpiece 2 comprises a first connecting portion 21 and a second connecting portion 23 on the opposite side of the first connecting portion 21. The first connecting portion 21 is configured to be connected to water sports equipment (e.g., the lower end of a breathing pipe). The second connecting portion 23 is configured to be received in the user's mouth and to be in communication with the first connecting portion 21.

[0023] The second connecting portion 23 has an annular curved wall 231, with a first hollow structure H1 and a second hollow structure H2 formed on the left and right sides of the annular curved wall 231. The first hollow structure H1 includes a first upper wall H11, a first lower wall H13 facing the first upper wall H11, a first inner wall H15 connecting the first upper wall H11 and the first lower wall H13, and a first limiting wall H17 provided on the first inner wall H15 and extending upward and downward from the first inner wall H15. Similarly, the second hollow structure H2 includes a second upper wall H21, a second lower wall H23 facing the second upper wall H21, a second inner wall H25 connecting the second upper wall H21 and the second lower wall H23, and a second limiting wall H27 provided on the second inner wall H25 and extending upward and downward from the second inner wall H25.

[0024] When the second connecting portion 23 is placed in the user's mouth, the user's upper left and lower left teeth are configured to contact the first upper wall H11 and first lower wall H13 of the first hollow structure H1, respectively, and the user's upper right and lower right teeth are configured to contact the second upper wall H21 and second lower wall H23 of the second hollow structure H2, respectively. In this manner, the annular curved wall 231 is suitably placed between the user's upper gums and upper lip, and between the user's lower gums and lower lip. Furthermore, the upper and lower teeth on the user's left side are placed between the left side of the annular curved wall 231 and the first limiting wall H17 of the first hollow structure H1, and the upper and lower teeth on the user's right side are placed between the right side of the annular curved wall 231 and the second limiting wall H27 of the second hollow structure H2, thereby achieving the effect of positioning the entire pressure relief mouthpiece 2 within the user's mouth. In this design, two spaces are formed between the first upper wall H11 and the first lower wall H13, and between the second upper wall H21 and the second lower wall H23, respectively, to provide relative elastic cushioning functions for the upper and lower dentition.

[0025] Preferably, the first hollow structure H1 and the second hollow structure H2 may be formed of a thermosetting silicone rubber or a thermoplastic material, and may have a Shore A hardness in the range of 30-90.

[0026] 2B, when viewed from the top of the pressure relief mouthpiece 2, the first hollow structure H1 has a first opening H1p, and the second hollow structure H2 has a second opening H2p. The first opening H1p is defined by a first upper wall H11, a first lower wall H13, and a first inner wall H15. The second opening H2p is defined by a second upper wall H21, a second lower wall H23, and a second inner wall H25.

[0027] Each of the first opening H1p and the second opening H2p preferably has a width W in the range of 2.2 mm to 15 mm. Each of the first upper wall H11, the second upper wall H21, the first lower wall H13, and the second lower wall H23 preferably has a thickness T in the range of 0.8 mm to 5 mm. In this way, a support height H in the range of 3 mm to 20 mm can be ensured for the user's upper and lower dentition. Preferably, the width W of each opening is in the range of 6 mm to 10 mm, and the thickness T of each upper wall and each lower wall is in the range of 1.5 mm to 3 mm. With this configuration, the support height H for the user's upper and lower dentition can reach 7.5 mm to 13 mm.

[0028] Each of the first hollow structure H1 and the second hollow structure H2 can have a rounded U-shaped, angular U-shaped, or V-shaped cross section. Figure 2B illustrates that each of the first hollow structure H1 and the second hollow structure H2 has an angular U-shaped cross section. In another embodiment, as shown in Figure 2C, each of the first hollow structure H1 and the second hollow structure H2 of the pressure relief mouthpiece 2c has a V-shaped cross section. In yet another embodiment, as shown in Figure 2D, each of the first hollow structure H1 and the second hollow structure H2 of the pressure relief mouthpiece 2c has a rounded U-shaped cross section.

[0029] Based on the above-described hollow structures (i.e., the first hollow structure H1 and the second hollow structure H2), a certain amount of gap is formed between the upper and lower walls of each hollow structure. This gap is sufficient to abut both the upper and lower dentition, allowing the user's mouth to remain slightly open in a natural state, thereby achieving the effect of stably storing the mouthpiece without tiring the muscles around the user's mouth. Furthermore, the presence of the gap does not prevent the mouthpiece from being intermittently tightly held to bring the upper and lower dentition closer together. In other words, this structure allows the upper and lower walls to elastically move closer and further away from each other while maintaining a natural distance that allows them to roughly contact the upper and lower dentition. This allows the user to maintain a relaxed state with their mouth slightly open in most situations.

[0030] Furthermore, to maintain the distance between the upper and lower walls and prevent them from being crushed, a reinforcing device can be added to each hollow structure to improve its strength, thereby reducing the need for thicker upper and lower walls. Specifically, as shown in FIG. 3A, the first hollow structure H1 of the pressure relief mouthpiece 3a can have a first reinforcing device R1 with at least one first transverse rib 31. Each first transverse rib 31 is disposed between the first upper wall H11 and the first lower wall H13 of the first hollow structure H1, e.g., its two ends are connected to the first upper wall H11 and the first lower wall H13. Similarly, the second hollow structure H2 of the pressure relief mouthpiece 3a can have a second reinforcing device R2 with at least one second transverse rib 32. Each second transverse rib 32 is disposed between the second upper wall H21 and the second lower wall H23 of the second hollow structure H2.

[0031] In another embodiment, as shown in FIG. 3B, the first reinforcing device R1 of the first hollow structure H1 of the pressure relief mouthpiece 3b may include at least one first longitudinal rib 33. Each first longitudinal rib 33 is arranged between the first upper wall H11 and the first lower wall H13 of the first hollow structure H1. Preferably, two first longitudinal ribs 33 are arranged on each of the first upper wall H11 and the first lower wall H13. Similarly, the second reinforcing device R2 of the second hollow structure H2 of the pressure relief mouthpiece 3b may include at least one second longitudinal rib 34. Each second longitudinal rib 34 is arranged between the second upper wall H21 and the second lower wall H23 of the second hollow structure H2.

[0032] In yet another embodiment, as shown in Figure 3C, the first reinforcing device R1 of the first hollow structure H1 of the pressure relief mouthpiece 3c may also comprise a plurality of first protrusions 35 arranged between the first upper wall H11 and the first lower wall H13 of the first hollow structure H1. Similarly, the second reinforcing device R2 of the second hollow structure H2 of the pressure relief mouthpiece 3c comprises a plurality of second protrusions 36 arranged between the second upper wall H21 and the second lower wall H23 of the second hollow structure H2.

[0033] In the above examples and embodiments, the first hollow structure H1 and the second hollow structure H2 are integrally formed on the left and right sides, respectively, of the annular curved wall 231. However, in further embodiments, the first hollow structure H1 and the second hollow structure H2 can be independent components that can be fixedly or detachably connected to the left and right sides, respectively, of the annular curved wall 231, such as the pressure relief mouthpiece 3d shown in Figure 3D.

[0034] Furthermore, in an embodiment, as shown in FIG. 3E, the pressure relief mouthpiece 3e may have groove structures G1 formed on the left and right sides of the annular curved wall 231 (only one side is shown for illustrative purposes). Preferably, the groove structures G1 are formed of multiple parallel narrow grooves with a continuous, uneven cross section. This design increases the likelihood that the first hollow structure H1 and the second hollow structure H2 will be positioned close to or far from each other. In other words, this design increases the range of movement of the annular curved wall 231 in the lateral direction (i.e., left-right direction). In this way, the annular curved wall 231 has a high degree of freedom to expand outward and contract inward. Therefore, when a user bites the mouthpiece, it can be positioned more correctly and comfortably according to the different distances between the left and right teeth, making it possible to provide a mouthpiece suitable for a wider range of users, regardless of the shape or size of their mouths.

[0035] The groove structures G1 on each of the left and right sides of the annular curved wall 231 can have at least one of a continuous zigzag-shaped cross section S1 (see FIG. 4A), a continuous rectangular-shaped cross section S2 (see FIG. 4B), and a continuous uneven-shaped cross section S3 (see FIG. 4C).

[0036] Furthermore, in an embodiment, as shown in Figure 3F, the pressure relief mouthpiece 3f can have a multi-fold structure MF1 integrally formed between the first connecting portion 21 and the second connecting portion 23. The multi-fold structure MF1 increases the degree of bending freedom of the second connecting portion 23 relative to the first connecting portion 21, thereby further reducing the pulling load caused by misalignment of the mouthpiece and improving usability. The multi-fold structure MF1 can be made of thermosetting silicone rubber or a thermoplastic plastic material with a Shore A hardness in the range of 20 to 70.

[0037] Similarly, the multi-folded structure MF1 may have at least one of a continuous zigzag-shaped cross section S1 (see FIG. 4A), a continuous rectangular-shaped cross section S2 (see FIG. 4B), and a continuous uneven-shaped cross section S3 (see FIG. 4C).

[0038] Additionally, in embodiments, as shown in Figure 3G, a pressure relief mouthpiece 3g can incorporate both the groove structure G1 shown in Figure 3E and the multi-fold structure MF1 shown in Figure 3F. This combination can provide the mouthpiece with maximum flexibility in both the width of the mouthpiece or the direction in which the mouthpiece extends.

[0039] In addition to breathing tubes for swimming training and two-stage regulators or octopuses for scuba diving, the pressure relief mouthpiece of the present invention can also be used with other types of diving masks, such as two-piece snorkel equipment (i.e., a combination of a breathing tube and a diving mask that does not communicate with the breathing tube), and even one-piece snorkel equipment with a mouthpiece developed by the inventors of the present invention (i.e., a breathable mask in which the breathing tube communicates with the mask body).

[0040] Taking two-piece snorkel equipment as an example, as shown in FIG. 5 , the water sports equipment 5 includes a mask 51, a breathing tube 53, and a pressure relief mouthpiece 55 (i.e., pressure relief mouthpieces 2, 2c, 2d, 3a, 3b, 3c, 3d, 3e, 3f, and 3g) described in any of the above examples or embodiments. The mask 51 is configured to cover the user's eyes and nose. The breathing tube 53 has an upper end 53a and a lower end 53b opposite the upper end 53a. The upper end 53a provides an inlet and an outlet for air. A fastener 53c is disposed between the upper end 53a and the lower end 53b, and is connected to the mask 51. The pressure relief mouthpiece 55 is provided at the lower end 53b of the breathing tube 53.

[0041] The focus of this invention is the hollow structure on both sides of the mouthpiece. The design of other components or the type of water sports equipment it is used in are not the focus of this invention. Any modifications based on the core technology of this invention are intended to be protected. Therefore, the above-described embodiments are used only to illustrate the implementation of the present invention and explain the technical features of the present invention, and are not used to limit the scope of the present invention. Any modifications or equivalent arrangements that can be easily achieved by those skilled in the art are considered to be within the scope of the present invention, and the scope of the present invention should be limited by the claims of the patent application.

Claims

1. 1. A pressure relief mouthpiece for water sports equipment, comprising: a first coupling configured to connect to the water sports equipment; a second connecting portion configured to be received in a user's mouth and in communication with the first connecting portion; Equipped with the second connecting portion has an annular curved wall on its left and right sides, in which a first hollow structure and a second hollow structure are formed, respectively; The first hollow structure is A first upper wall; a first lower wall facing the first upper wall; a first inner wall connected to the first upper wall and the first lower wall; a first limiting wall disposed upward and downward from the first inner wall; Equipped with The second hollow structure is A second upper wall; a second lower wall opposite the second upper wall; and a second inner wall connected to the second upper wall and the second lower wall; a second limiting wall disposed upward and downward from the second inner wall; Equipped with When the second connecting portion is accommodated in the mouth of a user, the upper left and lower left dental rows of the user are configured to contact the first upper wall and the first lower wall of the first hollow structure, respectively, and the upper right and lower right dental rows of the user are configured to contact the second upper wall and the second lower wall of the second hollow structure, respectively. A pressure relief mouthpiece characterized by:

2. The first hollow structure has a first opening defined by the first upper wall, the first lower wall, and the first inner wall, and the second hollow structure has a second opening defined by the second upper wall, the second lower wall, and the second inner wall.

2. A pressure relief mouthpiece according to claim 1, characterized in that

3. Each of the first opening and the second opening has a width in the range of 2.2 mm to 15 mm, and each of the first upper wall, the second upper wall, the first lower wall and the second lower wall has a thickness in the range of 0.8 mm to 5 mm.

3. A pressure relief mouthpiece according to claim 2.

4. each of the first hollow structure and the second hollow structure has a rounded U-shaped, an angular U-shaped, or a V-shaped cross section; 4. A pressure relief mouthpiece according to claim 3.

5. the first hollow structure has a first reinforcing device and the second hollow structure has a second reinforcing device; 2. A pressure relief mouthpiece according to claim 1, characterized in that

6. the first reinforcing device comprises at least one first transverse rib arranged between the first upper wall and the first lower wall of the first hollow structure, and the second reinforcing device comprises at least one second transverse rib arranged between the second upper wall and the second lower wall of the second hollow structure; 6. A pressure relief mouthpiece according to claim 5.

7. the first reinforcing device comprises at least one first longitudinal rib arranged between the first upper wall and the first lower wall of the first hollow structure, and the second reinforcing device comprises at least one second longitudinal rib arranged between the second upper wall and the second lower wall of the second hollow structure; 6. A pressure relief mouthpiece according to claim 5.

8. The first reinforcing device comprises a plurality of first protrusions arranged between the first upper wall and the first lower wall of the first hollow structure, and the second reinforcing device comprises a plurality of second protrusions arranged between the second upper wall and the second lower wall of the second hollow structure.

6. A pressure relief mouthpiece according to claim 5.

9. the first hollow structure and the second hollow structure are detachably coupled to the left and right sides of the annular curved wall, respectively; 2. A pressure relief mouthpiece according to claim 1, characterized in that

10. a groove structure is formed on each of the left and right sides of the annular curved wall, thereby increasing the lateral range of movement of each of the first hollow structure and the second hollow structure; 2. A pressure relief mouthpiece according to claim 1, characterized in that

11. a multi-fold structure integrally formed between the first connecting portion and the second connecting portion to increase the degree of bending freedom of the second connecting portion relative to the first connecting portion; 2. A pressure relief mouthpiece according to claim 1, characterized in that

12. 1. Water sports equipment comprising a mask configured to cover a user's eyes and nose, and a breathing tube having an upper end and a lower end, The breathing tube has an upper end providing an inlet and an outlet for air, and a fastener for connecting the breathing tube to the mask is provided between the upper end and the lower end; The water sports equipment further comprises a pressure relief mouthpiece according to any one of claims 1 to 11 provided at the lower end of the breathing tube. Water sports equipment characterized by:

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