Adjustable facial-interface systems for head-mounted displays

A head-mounted-display device comprising:

• a facial interface;
• a head-mounted-display housing;
• and
• a facial-interface adjustment apparatus comprising:
• a coupling mount that couples the facial-interface adjustment apparatus to the head-mounted-display housing;
• an adjustment protrusion that is movable between a plurality of holding positions relative to the head-mounted-display housing, the adjustment protrusion having a facial-interface coupling portion coupled to the facial interface;
• a holding projection that extends into a recessed path defined in the adjustment protrusion, the recessed path comprising a plurality of holding notches, each of the plurality of holding notches corresponding to a separate holding position of the plurality of holding positions;
• and
• a spring that applies a biasing force to the adjustment protrusion in a biasing direction toward the facial-interface coupling portion, wherein:
• application of a compressing force to the adjustment protrusion compresses the spring in a compressing direction opposite the biasing direction;
• the compressing of the spring causes the recessed path to move relative to the holding projection as the adjustment protrusion moves from a first holding position where the biasing force secures the holding projection within a first holding notch to a second holding position where the holding projection is within a second holding notch;
• and
• removal of the application of the compressing force to the adjustment protrusion causes further movement of the recessed path relative to the holding projection as the adjustment protrusion moves from the second holding position to a third holding position where the biasing force secures the holding projection within a third holding notch.

A method comprising:

• positioning a spring between a spring holding member attached to a coupling mount for coupling to a head-mounted-display housing and a spring abutment surface of an adjustment protrusion that is movable between a plurality of holding positions relative to the coupling mount;
• coupling a holding projection to the coupling mount such that:
• the holding projection extends into a recessed path defined in the adjustment protrusion;
• and
• the recessed path moves relative to the holding projection when the adjustment protrusion moves between separate holding positions of the plurality of holding positions;
• and
• coupling a facial interface to a facial-interface coupling portion of the adjustment protrusion, wherein:
• the spring applies a biasing force to the adjustment protrusion in a biasing direction by pushing against the spring abutment surface and toward the facial-interface coupling portion of the adjustment protrusion;
• application of a compressing force to the adjustment protrusion compresses the spring between the spring holding member and the spring abutment surface in a compressing direction opposite the biasing direction;
• the compressing of the spring causes the recessed path to move relative to the holding projection as the adjustment protrusion moves from a first holding position where the biasing force secures the holding projection within a first holding notch to a second holding position where the holding projection is within a second holding notch;
• and
• removal of the application of the compressing force to the adjustment protrusion causes further movement of the recessed path relative to the holding projection as the adjustment protrusion moves from the second holding position to a third holding position where the biasing force secures the holding projection within a third holding notch.