Patent ID: 8558819

Claim:
An electronic apparatus, comprising: a main body, comprising: a protection cover; a containing trench, having a first opening and a second opening and comprising a bulge, wherein the second opening is contiguous to a placing hole of the protection cover; and a reset button, separated from the first opening for a certain distance; and a stylus, comprising: a stylus body, comprising a first stylus body, a second stylus body and a surrounding trench structure, wherein a first end of the surrounding trench structure is connected to the first stylus body, a second end of the surrounding trench structure is connected to the second stylus body, in which the cross section area of the first end is smaller than the cross section of the second end; a stylus front end, stretching from the first stylus body to a stylus tip; and a stylus rear end, connected to the second stylus body and comprising a catching bulge; wherein the stylus front end passes into the containing trench via the second opening to perform a first displacement to a first position such that the bulge buckles in the surrounding trench structure to enable the stylus to be placed inside the containing trench, and then to perform a second displacement to a second position by pressing the stylus rear end to make the surrounding trench structure slide over the bulge such that the stylus tip touches the reset button via the first opening to reset the electronic apparatus, wherein the protection cover further comprises a side slot contiguous to the second opening of the containing trench, and the first displacement is performed by aligning the catching bulge with the side slot, wherein the protection cover further comprises a second displacement slot contiguous to the side slot, and the second displacement is performed after the stylus is rotated to make the catching bulge move to the second displacement slot from the side slot, such that the catching bulge moves into the second displacement slot when the second displacement is performed.