| 摘要 |
The present invention offers a fixing structure for input keys, applied in personal digital assistant provided with function of a mobile telephone. On the backside of the case of a framework are provided a plurality of positioning elements and a plurality of thermomeltable elements respectively. On said positioning elements and thermomeltable elements are sheathed consecutively with elastic sheet, plate, circuit board and fixing plate. Each end of said thermomeltable elements is accommodated in corresponding recessed hole provided in said fixing plate to avoid interference with other parts. Pressing keys set up on elastic sheet can be just protruded from the case respectively, and by means of a bottom plate kept flat against the whole bottom, the fixing structure is completed. In this way, not only is the aim to decrease thickness of PDA achieved, but also it is convenient for users to carry.
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