| 摘要 |
PROBLEM TO BE SOLVED: To provide a movable body system which can prevent the penetration of a foreign matter into its inside. SOLUTION: The movable body system is composed of a fixed magnet, a fixed case which is equipped with an opening corresponding to one side of the fixed magnet and retains the fixed magnet inside, a mobile part which has a mobile magnet inserted into a gap from the opening and can move to the fixed magnet, and a mobile cover which blocks the opening corresponding to the movement of the mobile part. This can prevent the penetration of the foreign matter into the fixed part by having the mobile cover for blocking the opening not blocked by the mobile part corresponding to the movement of the mobile part. COPYRIGHT: (C)2003,JPO
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