| 摘要 |
A dustfree and waterproof rolling-ball optical mouse comprising: a concave housing ( 1 ); a rolling ball ( 3 ) movably engaged with said concave housing; a dustproof gasket ( 2 ) fixed on the concave surface of the concave housing; a leakage hole ( 22 ) of a conduit ( 4 ) defined in a center of said concave surface of said concave housing; an aperture ( 21 ) for allowing light through which is eccentrically defined in the bottom of said concave surface of said concave housing; and a waterproof tab ( 28 ) formed around the edge of said aperture.
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