| 摘要 |
An attachment for remote control of a keyboard comprising a series of selecting elements (40) mounted for movement in a first direction between inoperative and operative positions, each having a series of apertures (41, 42, 43, 44); a series of push-bars (61, 62, 63, 64) mounted for movement in a second direction, each having an elongated member oriented longitudinally in a third direction; a plurality of push-sticks (51, 52, 53, 54), each being rotatably linked at one of its ends to one of the elongated members of push-bars and slidably linked at its other end to an aperture of one of the selecting elements; devices for selectively moving the selecting elements and push-bars; a plurality of push-rods (21, 22, 23, 24) mounted for movement in the second direction, each having its lower tip surface bearing on top of the corresponding key, and its upper tip surface being acted upon by the corresponding push-stick in the direction that causes the corresponding key to move from inoperative position to operative position only when the selecting element linked to the push-stick was first moved to operative position and then the push-bar linked to the push-stick was next moved to operative position; whereby selectively moving the selecting elements and the push-bars selectively move the keys of the keyboard from inoperative position to operative position and actuates consequently the functions intended for the keys. |
