Abstract: A collapsible keyboard includes a middle subframe, and right and left subframes respectively disposed at and connected to two sides of the middle subframe by two levers, each of which is pivotally mounted on each pair of the adjacent subframes. Thus, the right and left subframes are swingable relative to the middle subframe between a deployed position, where the subframes are aligned with each other in a row, and a collapsed position, where the left and right subframes are superimposed upon and abut against the middle subframe.

Abstract: A foldable keyboard includes a keyboard body and a linkage unit. The keyboard body includes a central section and left and right sections respectively disposed at left and right sides of the central section. The linkage unit includes two opposing pairs of first parallel linkages that are respectively pivoted to front and rear sides of the left and central sections, and two opposing pairs of second parallel linkages that are respectively pivoted to the front and rear sides of the right and central sections so as to permit folding of the keyboard body.