Combination of a goggle and a face mask

1. An apparatus comprising:

a goggle including:

a goggle frame including a top surface and a first contact wall at a bottom surface of the goggle frame that is opposite the top surface of the goggle frame, and a protective lens installed in the goggle frame;

a face mask releasably connected to the goggle, the face mask including a second contact wall, a top surface, and a bottom surface that is opposite the top surface of the face mask, the second contact wall extending horizontally from an inner wall of the face mask a distance below the top surface of the face mask when the face mask is worn;

a detachable connection comprising a pivoting axis parallel to a lateral direction of the goggle frame; and

a locking connection provided between the bottom surface of the goggle frame and the second contact wall of the face mask, the locking connection configured to cooperate with the detachable connection to selectively lock the bottom surface of the goggle frame to the second contact wall of the face mask along the lateral direction by securing a portion of the first contact wall to a portion of the second contact wall.

2. The apparatus of claim 1 , wherein:

a shape of the second contact wall conforms to a shape of the first contact wall,

the first and second contact walls are at least partially in contact with each other when the face mask is selectively locked to the goggle frame by the locking connection,

the detachable connection comprises:

a receptacle formed on a side of the goggle frame; and

a pin extending along the pivoting axis formed on a side of the face mask and configured to be releasably received by the receptacle in a manner that is pivotable relative to the receptacle.

3. The apparatus of claim 2 , wherein the locking connection comprises:

a threaded hole formed in the goggle; and

a fastening bolt releasably connected to the face mask and configured to be screwed into the threaded hole.

4. The apparatus of claim 3 , wherein the protective lens comprises an auto-darkening filter.

5. The apparatus of claim 3 , wherein:

the threaded hole is formed in the first contact wall;

the second contact wall includes a through-hole; and

the fastening bolt is insertable into the through-hole and into the threaded hole, affixing the first contact wall to the second contact wall.

6. The apparatus of claim 3 , wherein the goggle frame is secured to the face mask when the fastening bolt is releasably connected to the face mask and screwed into the threaded hole.

7. The apparatus of claim 6 , wherein:

the threaded hole is formed in the first contact wall;

the second contact wall includes a through-hole; and

the fastening bolt is insertable into the through-hole and into the threaded hole, affixing the first contact wall to the second contact wall.

8. The apparatus of claim 6 , wherein the protective lens comprises an auto-darkening filter.

9. The apparatus of claim 2 , wherein:

a cross-section of the receptacle is substantially C-shaped; and

the pin is configured to be inserted into a notch of the C-shaped receptacle by elastic deformation.

10. The apparatus of claim 9 , wherein an opening of the C-shaped receptacle is formed upwards or obliquely upwards.

11. The apparatus of claim 2 , wherein the locking connection comprises:

a projection formed in the goggle; and

a releasable snap-fit component pivotally connected to the face mask and configured to be connected with the projection via pivoting in a manner that the goggle and the face mask are locked together.

12. The apparatus of claim 11 , wherein the protective lens comprises an auto-darkening filter.

13. The apparatus of claim 1 , wherein the detachable connection comprises:

a receptacle formed on a side of the face mask; and

a pin extending along the pivoting axis formed on a side of the goggle and configured to be releasably received by the receptacle in a manner that is pivotable relative to the receptacle.

14. The apparatus of claim 1 , wherein the locking connection comprises:

a threaded hole formed in the goggle; and

a fastening bolt releasably connected to the face mask and configured to be screwed into the threaded hole.

15. The apparatus of claim 14 , wherein the fastening bolt comprises a stem configured to be screwed into the threaded hole.

16. The apparatus of claim 15 , wherein the stem comprises:

a threaded part configured to be screwed into the threaded hole; and

a head disposed opposite of the threaded part, wherein the head is inserted into an operating cap.

17. The apparatus of claim 16 , wherein the operating cap is configured to allow the fastening bolt to be rotated or removed from the threaded hole.

18. The apparatus of claim 1 , wherein the locking connection comprises:

a projection formed in the goggle; and

a releasable snap-fit component pivotally connected to the face mask and configured to be connected with the projection via pivoting in a manner that the goggle and the face mask are locked together.

19. The apparatus of claim 18 , wherein the protective lens comprises an auto-darkening filter.

20. The apparatus of claim 1 , further comprising:

a first support wall extending from a first end of the second contact wall and substantially parallel to the inner wall of the face mask, and

a second support wall extending from a second end of the second contact wall and substantially parallel to the inner wall of the face mask,

wherein:

the protective lens comprises an auto-darkening filter,

and

the detachable connection including a first portion and a second portion, wherein the first portion detachably connects a left side of the goggle to a left side of the face mask and the second portion detachably connects a right side of the goggle to a right side of the face mask.