| 摘要 |
A foldable input device comprises two housings; a pivotal body being pivotally connected between the two housings; the two housings being foldable in half or expanded with respect to the pivotal body; an upper and a lower end of one of the housings being installed with a sliding track so that a key portion moves with respect to the housings; a sector plate is pivotally installed between one housing and the pivotal body so that the sector plate is connected to the pivotal body with one end thereof being used as a rotary shaft, while another end is inserted into the housing; the housing being capable of expanding with an angle with respect to the pivotal body; two key portions being embedded into surfaces of two housings and being positioned so that the left and right sides thereof being adjustable so as to provide a preferred operation condition to the user.
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