Key mechanism with spring keycap

A keyboard input device, the keyboard input device comprising:

• a plurality of key input mechanisms, each key input mechanism comprising:
• a keycap including:
• a first cylindrical edge;
• a second cylindrical edge parallel to the first cylindrical edge, the first cylindrical edge and the second cylindrical edge being configured to facilitate securing of the keycap to a surface of the keyboard input device;
• an arced portion extending between the first cylindrical edge and the second cylindrical edge, such that the first cylindrical edge is disposed at a first end of the arced portion and the second cylindrical edge is disposed at a second end of the arced portion, the arced portion of the keycap defining an upper surface of the key input mechanism and having a first central arc angle when un-pressed, the arced portion having a thickness that is less a thickness of the first cylindrical edge and less than a thickness of the second cylindrical edge,
• the keycap being configured to:
• when pressed, deform so as to have a second central arc angle, the first central arc angle being greater than the second central arc angle;
• and
• when released after being pressed, return to its un-pressed shape having the first central arc angle;
• and
• a switch disposed under the keycap, the switch being configured to:
• when the keycap is pressed, electrically couple two or more circuit traces to indicate a keystroke for the key input mechanism;
• and
• when the keycap is released, electrically decouple the two or more circuit traces to indicate that the keystroke for the key input mechanism is complete.

A computing device comprising:

• a keyboard input device, the keyboard input device including:
• a plurality of key input mechanisms, each key input mechanism comprising:
• a keycap including:
• a first cylindrical edge;
• a second cylindrical edge parallel to the first cylindrical edge, the first cylindrical edge and the second cylindrical edge being configured to facilitate securing of the keycap to a surface of the keyboard input device;
• an arced portion extending between the first cylindrical edge and the second cylindrical edge, such that the first cylindrical edge is disposed at a first end of the arced portion and the second cylindrical edge is disposed at a second end of the arced portion, the arced portion of the keycap defining an upper surface of the key input mechanism and having a first central arc angle when un-pressed, the arced portion having a thickness that is less a thickness of the first cylindrical edge and less than a thickness of the second cylindrical edge,
• the keycap being configured to:
• when pressed, deform so as to have a second central arc angle, the first central arc angle being greater than the second central arc angle;
• and
• when released after being pressed, return to its un-pressed shape having the first central arc angle;
• and
• a switch disposed under the keycap, the switch being configured to:
• when the keycap is pressed, electrically couple two or more circuit traces to indicate a keystroke for the key input mechanism;
• and
• when the keycap is released, electrically decouple the two or more circuit traces to indicate that the keystroke for the key input mechanism is complete.