A keyswitch structure includes a keycap having a lower surface and an engaging portion protruding from the lower surface, the keycap moving to a lower position when the keycap is pressed, a linking bar coupled with the engaging portion, a distal end of the engaging portion being lower than the linking bar when the keycap moves to the lower position, a baseplate disposed below the keycap, the baseplate having a recessed space corresponding to the engaging portion, and a buffer film disposed on the baseplate, the buffer film substantially extending over the recessed space and having a deformable portion corresponding to the recessed space, wherein when the keycap moves toward the baseplate to the lower position, the distal end of the engaging portion pushes the deformable portion to make the deformable portion extend into the recessed space.

The keyboard having a plurality of plate-shaped keys which are connected to actuators stabilizes the keys by all the keys and all the actuators being connected to a bending-elastic but tension-resistant band-like membrane.

An input device includes: a switch unit that has a fixed contact and a movable contact placed so as to be movable away from and toward the fixed contact; a rubber member provided so as to be elastically deformable, the rubber member pressing the movable contact; and a slide member placed so as to be movable so that the slide member can press the rubber member. The rubber member has a first load generating part, which presses the movable contact, and a plurality of load adjusting parts disposed so as to enclose the first load generating part. The slide member has a first pressing part, which presses the first load generating part, and a plurality of second pressing parts, which press the plurality of load adjusting parts.