| 摘要 |
A retractable key assembly (12) comprising a keytop (20) coupled with a pivot arm (40) accommodating arcuate movement of the keytop about a pivot axis (B-B) defined by the pivotally mounted portion of the pivot arm, between an upper, active keying position and a lower, inactive position, with actuating means (16) serving to engage the key assembly and elevate the keytop to the upper, active position accommodating selective application of force to an upper surface of the keytop for keying, and with the actuating means being disengageable from the key assembly, whereby the keytop is lowerable to a lower, inactive position. Key assemblies of the foregoing type may be employed to form a keyboard (200), wherein the pivot arms exteriorly extending from the keytop function as spacers and stabilizing elements in a keyboard array.
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