| 摘要 |
An electronic mouse is a three-dimensional structure composed by a bottom face, a holding face, a supporting face and a handling face. The holding face is used for fingers to grip; the handling face is used for fingers to press; the supporting face is used for a palm to prop and thereby to drive the bottom face of the mouse to move on a carried surface. A cavity is formed at an appropriate location of the bottom face, and a ball cover having a circular hole is combined to the cavity, and a ball is received in the cavity and protrudes through the circular hole to be in contact with the carried surface. The feature lies in that foot pads are mounted around the bottom face of the mouse to slide on the carried surface and thus to form a sliding face, and that protruding stripes are mounted on the bottom face between the foot pads and the circular hole, and that there is a spacing between the bottom of said respective protruding stripe and said sliding face, whereby the protruding stripes can block dirt and debris on the carried surface during the mouse is sliding so as to prevent the dirt and debris from entering into the cavity through the circular hole and thus to avoid unfavorable influences of the operating performance of the mouse.
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