Head-mounted display

A head-mounted display, comprising:

• a housing having a receiving space;
• a bracket disposed in the receiving space;
• a first sliding plate slidably disposed to one side of the bracket, the first sliding plate having a first rack;
• a first display unit mounted to the first sliding plate, and the first display unit moving together with the first sliding plate;
• a second sliding plate slidably disposed to the other side of the bracket, the second sliding plate having a second rack, the first rack and the second rack being parallel to each other;
• a second display unit mounted to the second sliding plate, and the second display unit moving together with the second sliding plate;
• and
• an adjustment gear rotatably disposed at the bracket, and the adjustment gear being connected between the first rack and the second rack;
• wherein a plurality of limiting grooves are formed on one of the first sliding plate and the second sliding plate;
• wherein a limiting elasticity piece is mounted to the housing, the plurality of the limiting grooves face the limiting elasticity piece, the limiting elasticity piece has a limiting block, and the limiting block is buckled in one of the plurality of the limiting grooves;
• and
• wherein the adjustment gear rotates to drive the first rack and the second rack to move closer to each other or break away from each other, so that the first sliding plate and the second sliding plate move closer to each other or break away from each other.

A head-mounted display, comprising:

• a housing having a receiving space, a top wall of the housing defining an adjusting groove, the receiving space being communicated with the adjusting groove;
• a bracket disposed in the receiving space;
• a first sliding plate slidably disposed to one side of the bracket, the first sliding plate having a first rack;
• a first display unit mounted on the first sliding plate, and the first display unit moving together with the first sliding plate;
• a second sliding plate slidably disposed to the other side of the bracket, the second sliding plate having a second rack, the first rack and the second rack being parallel to each other;
• a second display unit mounted on the second sliding plate, and the second display unit moving together with the second sliding plate;
• and
• an adjustment gear rotatably disposed at the bracket, and the adjustment gear being connected between the first rack and the second rack;
• wherein an adjusting lever is extended from one of the first sliding plate and the second sliding plate, and the adjusting lever passes through the adjusting groove, and the adjusting lever is exposed to a top surface of the housing;
• wherein a fixation structure is positioned between the housing and one of the first sliding plate and the second sliding plate;
• and
• wherein the fixation structure has a plurality of limiting grooves and a limiting elasticity piece, the plurality of the limiting grooves face the limiting elasticity piece, the limiting elasticity piece has a limiting block, and the limiting block is buckled in one of the plurality of the limiting grooves.