Mask apparatus

1 . A mask apparatus comprising:

a mask body that defines a suction hole configured to receive external air from an outside of the mask apparatus and a discharge hole configured to discharge air to the outside, the mask body comprising a rear body and a front body that is coupled to a front surface of the rear body;

a face guard detachably coupled to a rear surface of the rear body by magnetic force and configured to be in contact with a face of a user, the face guard defining a breathing space; and

an air cleaning module disposed at the rear body and configured to filter the external air received through the suction hole and to supply the filtered air to the breathing space, the air cleaning module comprising a filter housing configured to accommodate a filter,

wherein the face guard comprises:

a coupling portion that faces the rear surface of the rear body,

a plurality of magnetic bodies disposed at a front surface of the coupling portion,

a close contact portion configured to be in contact with the face of the user, and

a connection portion that connects the coupling portion to the close contact portion, the connection portion defining one or more widths of the face guard in a front-rear direction,

wherein the plurality of magnetic bodies comprise:

a first magnetic body disposed at an upper portion of the front surface of the coupling portion, the first magnetic body being disposed at a center of the upper portion of the front surface of the coupling portion, and

a second magnetic body and a third magnetic body that are disposed at a lower portion of the front surface of the coupling portion, the second and third magnetic bodies being spaced apart from each other and disposed at sides of a center of the lower portion of the front surface of the coupling portion, respectively,

wherein the face guard defines a plurality of magnetic body mounting portions that receive the plurality of magnetic bodies, respectively,

wherein each of the plurality of magnetic body mounting portions comprises:

a mounting portion body that protrudes forward from the front surface of the coupling portion toward one of a plurality of magnet mounting grooves of the rear body, and

an insertion guide rib disposed inside the mounting portion body, and

wherein the mounting portion body and the insertion guide rib are spaced apart from each other to thereby define an insertion hole that receives one of the plurality of magnetic bodies between the mounting portion body and the insertion guide rib.

2 . The mask apparatus according to claim 1 , wherein the first magnetic body is disposed at a position corresponding to an upper side of the air cleaning module, and

wherein the second and third magnetic bodies are disposed at positions corresponding to a lower side of the air cleaning module.

3 . The mask apparatus according to claim 1 , wherein the suction hole is defined outside the breathing space, and the discharge hole is defined inside the breathing space.

4 . The mask apparatus according to claim 3 , wherein the first magnetic body is disposed at a position corresponding to an upper side of the discharge hole, and

wherein the second and third magnetic bodies are disposed at positions corresponding to a lower side of the discharge hole.

5 . The mask apparatus according to claim 1 , wherein each of the plurality of magnetic body mounting portions protrudes from the front surface of the coupling portion and is attached to the rear surface of the rear body.

6 . The mask apparatus according to claim 5 , wherein the rear body comprises:

a plurality of magnets that are disposed at the front surface of the rear body; and

a plurality of magnet mounting portions that protrude forward from the front surface of the rear body, each of the plurality of magnet mounting portions receiving one of the plurality of magnets, and

wherein the rear body defines the plurality of magnet mounting grooves at the rear surface of the rear body, each of the plurality of magnet mounting grooves being defined at a position corresponding to a rear surface of one of the plurality of magnet mounting portions.

7 . The mask apparatus according to claim 1 , wherein the mounting portion body defines:

an inner space that accommodates the insertion guide rib and the one of the plurality of magnetic bodies; and

a front opening that is in communication with the inner space and faces the rear surface of the rear body.

8 . The mask apparatus according to claim 7 , wherein each of the plurality of magnetic bodies is separably coupled to the mounting portion body of one of the plurality of magnetic body mounting portions through the front opening of the one of the plurality of magnetic body mounting portions.

9 . The mask apparatus according to claim 1 , wherein the filter housing is disposed at the rear body and defines the suction hole, the filter housing being configured to accommodate the filter at the suction hole.

10 . The mask apparatus according to claim 9 , wherein the face guard is disposed at a center portion of the rear body,

wherein the filter housing is disposed at at least one side of the center portion of the rear body, and

wherein the face guard separates the discharge hole from the suction hole.

11 . The mask apparatus according to claim 10 , wherein the suction hole is defined outside the breathing space, and the discharge hole is defined inside the breathing space.

12 . The mask apparatus according to claim 1 , further comprising a plurality of magnets that are disposed at the rear body and configured to provide the magnetic force to the plurality of magnetic bodies, respectively, to thereby couple the face guard to the rear body, and

wherein each of the plurality of magnetic bodies is made of iron or stainless steel.