Pressure relief mouthpiece and water sports equipment having the same

Abstract

A pressure relief mouthpiece for a water sports equipment is provided, which includes a connecting portion being contained by a mouth of a user and having an annular curved wall with a first hollow structure and a second hollow structure formed on the left and right sides therefor, respectively. Each hollow structure includes an upper wall, a lower wall opposite to the upper wall, an inner wall connecting to the upper wall and the lower wall, and a limiting wall disposed upward and downward from the inner wall. When the connecting portion is contained by the mouth of the user, part of the teeth of the user are configured to contact the upper wall and the lower wall of each hollow structure.

What is claimed is: 
     
         1 . A pressure relief mouthpiece for a water sports equipment, comprising:
 a first connecting portion, being configured to connect to the water sports equipment; and   a second connecting portion, being configured to be contained by a mouth of a user and being in communication with the first connecting portion;   characterized in that:   the second connecting portion has an annular curved wall with a first hollow structure and a second hollow structure formed on a left side and a right side thereof, respectively;   the first hollow structure comprises:
 a first upper wall; 
 a first lower wall opposite to the first upper wall; 
 a first inner wall connecting to the first upper wall and the first lower wall; and 
 a first limiting wall disposed upward and downward from the first inner wall; 
   the second hollow structure comprises:
 a second upper wall; 
 a second lower wall opposite to the second upper wall; 
 a second inner wall connecting to the second upper wall and the second lower wall; and 
 a second limiting wall disposed upward and downward from the second inner wall; 
   when the second connecting portion is contained by the mouth of the user, an upper left row of teeth and a lower left row of teeth of the user are configured to contact the first upper wall and the first lower wall of the first hollow structure, respectively, and an upper right row of teeth and a lower right row of teeth of the user are configured to contact the second upper wall and the second lower wall of the second hollow structure, respectively.   
     
     
         2 . The pressure relief mouthpiece of  claim 1 , wherein 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. 
     
     
         3 . The pressure relief mouthpiece of  claim 2 , wherein each of the first opening and the second opening has a width ranging between 2.2 mm and 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 ranging between 0.8 mm and 5 mm. 
     
     
         4 . The pressure relief mouthpiece of  claim 3 , wherein each of the first hollow structure and the second hollow structure has a rounded U-shape, a cornered U-shape or a V-shape cross section. 
     
     
         5 . The pressure relief mouthpiece of  claim 1 , wherein the first hollow structure has a first reinforced device and the second hollow structure has a second reinforced device. 
     
     
         6 . The pressure relief mouthpiece of  claim 5 , wherein the first reinforced device comprises at least one first transverse rib disposed between the first upper wall and the first lower wall of the first hollow structure, and the second reinforced device comprises at least one second transverse rib disposed between the second upper wall and the second lower wall of the second hollow structure. 
     
     
         7 . The pressure relief mouthpiece of  claim 5 , wherein the first reinforced device comprises at least one first longitudinal rib disposed between the first upper wall and the first lower wall of the first hollow structure, and the second reinforced device comprises at least one second longitudinal rib disposed between the second upper wall and the second lower wall of the second hollow structure. 
     
     
         8 . The pressure relief mouthpiece of  claim 5 , wherein the first reinforced device comprises a plurality of first protrusions disposed between the first upper wall and the first lower wall of the first hollow structure, and the second reinforced device comprises a plurality of second protrusions disposed between the second upper wall and the second lower wall of the second hollow structure. 
     
     
         9 . The pressure relief mouthpiece of  claim 1 , wherein each of the first hollow structure and the second hollow structure is detachably connected to the left side and the right side of the annular curved wall, respectively. 
     
     
         10 . The pressure relief mouthpiece of  claim 1 , wherein each of the left side and the right side of the annular curved wall is formed with a groove structure, whereby increasing a lateral movement range of each of the first hollow structure and the second hollow structure. 
     
     
         11 . A water sports equipment comprising:
 a mask, being configured to cover eyes and a nose of a user;   a breathing pipe having an upper end portion and a lower end portion, wherein the upper end portion provides air inlet and outlet, and a fastener is provided between the upper end portion and the lower end portion to connect to the mask; and   a pressure relief mouthpiece provided at the lower end portion of the breathing pipe, the pressure relief mouthpiece comprising:
 a first connecting portion, being configured to connect to the water sports equipment; and 
 a second connecting portion, being configured to be contained by a mouth of a user and being in communication with the first connecting portion; 
   characterized in that:   the second connecting portion has an annular curved wall with a first hollow structure and a second hollow structure formed on a left side and a right side thereof, respectively;   the first hollow structure comprises:
 a first upper wall; 
 a first lower wall opposite to the first upper wall; 
 a first inner wall connecting to the first upper wall and the first lower wall; and 
 a first limiting wall disposed upward and downward from the first inner wall; 
   the second hollow structure comprises:
 a second upper wall; 
 a second lower wall opposite to the second upper wall; 
 a second inner wall connecting to the second upper wall and the second lower wall; and 
 a second limiting wall disposed upward and downward from the second inner wall; 
   when the second connecting portion is contained by the mouth of the user, an upper left row of teeth and a lower left row of teeth of the user are configured to contact the first upper wall and the first lower wall of the first hollow structure, respectively, and an upper right row of teeth and a lower right row of teeth of the user are configured to contact the second upper wall and the second lower wall of the second hollow structure, respectively.   
     
     
         12 . The pressure relief mouthpiece of  claim 11 , wherein 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. 
     
     
         13 . The pressure relief mouthpiece of  claim 12 , wherein each of the first opening and the second opening has a width ranging between 2.2 mm and 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 ranging between 0.8 mm and 5 mm. 
     
     
         14 . The pressure relief mouthpiece of  claim 13 , wherein each of the first hollow structure and the second hollow structure has a rounded U-shape, a cornered U-shape or a V-shape cross section. 
     
     
         15 . The pressure relief mouthpiece of  claim 11 , wherein the first hollow structure has a first reinforced device and the second hollow structure has a second reinforced device. 
     
     
         16 . The pressure relief mouthpiece of  claim 15 , wherein the first reinforced device comprises at least one first transverse rib disposed between the first upper wall and the first lower wall of the first hollow structure, and the second reinforced device comprises at least one second transverse rib disposed between the second upper wall and the second lower wall of the second hollow structure. 
     
     
         17 . The pressure relief mouthpiece of  claim 15 , wherein the first reinforced device comprises at least one first longitudinal rib disposed between the first upper wall and the first lower wall of the first hollow structure, and the second reinforced device comprises at least one second longitudinal rib disposed between the second upper wall and the second lower wall of the second hollow structure. 
     
     
         18 . The pressure relief mouthpiece of  claim 15 , wherein the first reinforced device comprises a plurality of first protrusions disposed between the first upper wall and the first lower wall of the first hollow structure, and the second reinforced device comprises a plurality of second protrusions disposed between the second upper wall and the second lower wall of the second hollow structure. 
     
     
         19 . The pressure relief mouthpiece of  claim 11 , wherein each of the first hollow structure and the second hollow structure is detachably connected to the left side and the right side of the annular curved wall, respectively. 
     
     
         20 . The pressure relief mouthpiece of  claim 11 , wherein each of the left side and the right side of the annular curved wall is formed with a groove structure, whereby increasing a lateral movement range of each of the first hollow structure and the second hollow structure.