| 摘要 |
PURPOSE:To facilitate assemblage and enable braille with favorable quality to be expressed with stable curved displacement, by a construction wherein base parts are fixed at free ends of piezoelectric element pieces, the tips of the pieces are aligned at the same height, and sensing pins capable of protruding are provided through corresponding through-holes of a sensing plate. CONSTITUTION:The piezoelectric element pieces 2 are contained in groove parts 111 of support plates 11, base end parts of the pieces 2 are made to protrude slightly beyond the plate 11, are inserted into slits 112, are fixed by an adhesive or the like, and each of the pieces 2 is curvedly displaced with the fixed part as a fulcrum. The free ends of the pieces 2 are made to slightly protrude through openings of the groove parts 111, the tip parts thereof are arranged while staggering them by a predetermined dimension each in correspondence with a stepped part 113, and the sensing pins 3 are fitted to the tips of the pieces 2. Since the pieces 2 are contained one in each of the groove parts 111 of the support plate 11, each of the pieces 2 can be fitted without fear of erroneously touching or breaking the adjacent one of the pieces 2 when assembling. In addition, since the pieces 2 can be accurately positioned and the fulcrums for curved displacement can be secured, each of the pieces 2 can be provided with stable curved displacement, and braille can be expressed with favorable quality. |
