Breathing mask

1. A breathing mask comprising:

a mask body having

a frame having two side ends and a through hole defined through the frame; and

a first universal socket bracket mounted securely in the through hole and having

a rear end;

a mounting hole defined through the first universal socket bracket and having an inner surface; and

a first spherical recess being annular and defined in the inner surface of the mounting hole;

a mounting bracket mounted securely on the mask body and having

a second universal socket bracket being hollow and tubular and having

a rear end;

a fastening hole defined through the second universal socket bracket and having an inner surface; and

a second spherical recess being annular, defined in the inner surface of the second universal socket bracket and located adjacent to the first spherical recess; and

an assembling member formed on and protruding backward from the second universal socket bracket;

a universal connecting tube mounted universally pivotally in the mask body and the mounting bracket, protruding forward from the mask body and having

a front end;

a rear end;

and

a ball joint formed on the rear end of the universal connecting tube, mounted universally rotatably in the first and second spherical recesses; and

a connection bracket mounted on the assembling member of the mounting bracket opposite to the mask body.

2. The breathing mask as claimed in claim 1 , wherein

the mask body has multiple buckling members formed on and protruding backward from the rear end of the first universal socket bracket, each buckling member having a buckling hole defined through the buckling member; and

the mounting bracket has multiple hooks being resilient, formed on and protruding back from the rear end of the second universal socket bracket, corresponding to the buckling members and detachably hooking respectively in the buckling holes of the buckling members.

3. The breathing mask as claimed in claim 2 , wherein the mounting bracket has multiple releasing pulls formed on the rear end of the second universal socket bracket and corresponding to the hooks; pulling the releasing pulls disengages the hooks from the buckling holes of the buckling members.

4. The breathing mask as claimed in claim 3 , wherein each releasing pull is U-shaped and has two ends connected to one of the hooks such that the releasing pull and the hook cooperatively form a ring-shaped configuration; each releasing pull extends transversely inward and is inclined backward.

5. The breathing mask as claimed in claim 4 , wherein the assembling member of the mounting bracket is annular and has

a radial flange formed on and protruding radially outward from the second universal socket bracket;

an axial flange formed on and protruding axially backward from the radial flange; and

an annular assembling slot defined between the axial flange and an outer surface of the second universal socket bracket.

6. The breathing mask as claimed in claim 5 , wherein the connection bracket has

a hollow sleeve mounted detachably in the annular assembling slot of the assembling member and having a rear end;

a hollow body formed on the rear end of the sleeve and communicating with the sleeve and having a rear end; and

two hollow nostril insertions formed on the rear end of the body and communicating with the body and each nostril insertion having an air outlet hole defined through the nostril insertion.

7. The breathing mask as claimed in claim 6 , wherein

the mounting bracket has multiple assembling holes defined in the axial flange of the assembling member; and

the connection bracket has multiple assembling hooks formed on an outer surface of the sleeve and mounted detachably and respectively in the assembling holes of the mounting bracket.

8. The breathing mask as claimed in claim 7 , wherein the ball joint is prevented from being displaced due to limitation by the first and second spherical recesses.

9. The breathing mask as claimed in claim 8 further comprising

two side bands connected pivotally and respectively to side ends of the frame: and

a rear band attached between the side bands.

10. The breathing mask as claimed in claim 9 , wherein each side band is a dual-layer structure and has a fabric layer and a glue layer formed on the fabric layer by hot-pressing processes.

11. The breathing mask as claimed in claim 10 , wherein the glue layer is a polyester polyurethane layer.