Breathable mask for snorkeling
A breathable mask includes a main frame, a transparent lens portion, a water-sealing skirt and a breathing tube. The main frame includes a lens frame, a mouth frame and a nose frame interposed therebetween. The water-sealing skirt is integrally formed by an eye skirt, a nose skirt and a mouth skirt, and a skirt frame is arranged in front of the eye skirt. The transparent lens portion and the skirt frame are embedded in the lens frame in a water-sealing manner, and the nose skirt protrudes outward from the nose frame. A purge valve is provided between the mouth skirt and the mouth frame. The mouth skirt is adapted for one-way fluid communication to the outside through the purge valve and the mouth frame.
1. A breathable mask, comprising a body and a breathing tube, the body having an interior capable of being in fluid communication with the breathing tube; the body including:
a main frame, having a lens frame and a mouth frame which extends downward from the lens frame, and defines a nose frame together with the lens frame; the mouth frame being in fluid communication with an outside;
a lens module having a transparent lens portion corresponding to a shape of the lens frame;
a water sealing skirt, formed with an eye skirt, a nose skirt, and a mouth skirt; wherein the eye skirt has a skirt frame formed on a front thereof and corresponding to a shape of the transparent lens portion;
a purge valve insert;
wherein the transparent lens portion and the skirt frame are jointly waterproof and embedded in the lens frame, and the nose skirt protrudes outward from the nose frame; and wherein the purge valve insert is sandwiched between and directly attached to both the mouth skirt and mouth frame, thereby the mouth skirt is adapted to be in one-way fluid communication with the outside through the mouth frame;
whereby when wearing the breathable mask, a user's eyes, nose and mouth are respectively accommodated in the eye skirt, the nose skirt and the mouth skirt, and a rear edge of the water sealing skirt continuously and closely fits a user's face along an outer periphery of the user's eyes, the nose, and the mouth.
2. The breathable mask as claimed in claim 1 , further comprising a sub-frame, wherein the lens frame has a rigid inner flange, and the skirt frame has a soft flange corresponding in shape to and overlapping the rigid inner flange, the transparent lens portion has an outer periphery overlapping the soft flange, and the sub-frame overlaps the outer periphery of the lens portion and is fastened onto to the lens frame, thereby the transparent lens portion and the skirt frame is jointly waterproof and inlaid in the lens frame.
3. The breathable mask as claimed in claim 2 , wherein the sub-frame and the lens frame are fastened to each other by clips or adhesives.
4. The breathable mask as claimed in claim 1 , wherein the mouth frame has a shield and two brackets, respectively extending from two lower sides of the lens frame portion and connecting the shield.
5. The breathable mask as claimed in claim 4 , wherein the shield is provided with a plurality of apertures, the mouth skirt is provided with an opening, the plurality of apertures are at least partially aligned with the opening, and the purge valve insert is sandwiched between the plurality of apertures and the opening, so that the mouth skirt is suitable for unidirectional fluid communication with the outside through the mouth frame, whereby when the user's mouth is accommodated in the mouth skirt, the purge valve insert is substantially in front of the user's mouth.
6. The breathable mask as claimed in claim 5 , wherein the purge valve insert comprises a valve seat and a valve plate centrally fixed on the valve seat, and wherein the valve seat is coupled onto a periphery of the mouth skirt by multi-flanges at one side thereof, and is clipped onto the shield of the mouth frame at the other side thereof, so as to securely fix the purge valve insert between the mouth skirt and the mouth frame.
7. The breathable mask as claimed in claim 6 , wherein the valve plate has a diameter ranging from 23 mm to 28 mm.
8. The breathable mask as claimed in claim 1 , wherein the nose skirt includes an equalizing portion and a partition, which are separated by a section of the lens frame; and wherein the eye skirt, the transparent lens portion and the partition define an eye pocket for accommodating the user's eyes, and the equalizing portion, the partition and the mouth skirt define an orinasal pocket for accommodating the user's nose and mouth.
9. The breathable mask of claim 8 , wherein the partition is provided with at least one pivot check valve to allow a unidirectional air flow from the eye pocket to the orinasal pocket.
10. The breathable mask as claimed in claim 9 , wherein the partition is symmetrically provided with two pivot check valves, and each of the pivot check valves is shaped rectangular, with one of a width and a height thereof ranging from 5 mm to 30 mm.
11. The breathable mask as claimed in claim 9 , wherein the partition is symmetrically provided with two pivot check valves, and each of the pivot check valves is shaped rectangular, with a thickness thereof ranging from 0.3 mm to 3 mm.
12. The breathable mask as claimed in claim 9 , wherein the partition is symmetrically provided with two pivot check valves, and each of the pivot check valves has a rectangular swing lid, a fixing portion and a pivot axle disposed between the swing lid and the fixing portion.
13. The breathable mask as claimed in claim 12 , wherein each pivot axle is formed by thinning one side of the respective swing lid.
14. The breathable mask of claim 12 , wherein the orinasal pocket has a cross-sectional shape that tapers toward a drain tip where the purge valve insert is located.
15. The breathable mask as claimed in claim 8 , further comprising an exhaust passage which runs along an inner peripheral edge of the lens frame and which is defined by the eye skirt and an outer peripheral surface of the transparent lens portion, wherein the exhaust passage is in fluid communication with the breathing tube at an upper end thereof, and with the orinasal pocket at a lower end thereof.
16. The breathable mask as claimed in claim 1 , wherein the eye skirt of the water sealing skirt has a rear edge having a Y-shaped cross-section, forming a first fitting portion and a second fitting portion, whereby when the rear edge of the water sealing skirt is in close contact with the user's face, the second fitting portion is located at an outer periphery of the first fitting portion.