TRACKBALL STRUCTURE, TRACKBALL ANTIFOULING FILM, TRACKBALL, TRACKBALL CLEANING METHOD, AND TRACKBALL MODIFICATION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a trackball structure which allows for easily cleaning an inner structure of a trackball.SOLUTION: A trackball structure has a film 3 disposed on an inner surface of a ball holder 2 of a trackball 10 to catch dirt falling from a ball 9 or above. The film is formed to be removable and washable, and is made of a flexible and watertight material.SELECTED DRAWING: Figure 1