Low-travel key mechanisms using butterfly hinges

A keyboard for an electronic device comprising:

• a support structure defining an opening;
• a set of key mechanisms coupled to the support structure, one of the set of key mechanisms comprising:
• a keycap;
• a hinge mechanism movably supporting the keycap above the support structure, the hinge mechanism comprising:
• a first wing having a first gear member;
• and
• a second wing having a second gear member, the first gear member of the first wing interfacing with the second gear member of the second wing to couple the first and second wings together;
• a first pair of pivot pins coupling the first wing to the support structure;
• a second pair of pivot pins coupling the second wing to the support structure;
• a first pair of keycap pins coupling the first wing to the keycap;
• a second pair of keycap pins coupling the second wing to the keycap;
• wherein a portion of the keycap is received within the opening of the support structure when the key mechanism is in a depressed position.