| 摘要 |
PROBLEM TO BE SOLVED: To provide a suction opening body which sucks dust detached from a brush provided on the bottom face of the suction opening body when forwardly and backwardly moving the suction opening body. SOLUTION: Etiquette brushes 61A, 61B, 62A and 62B are provided between a small suction opening (first suction opening) 41 and a large suction opening (second suction opening) 42, the distal end of the etiquette brushes 61A and 62A positioned closely to the small suction opening 41 are turned toward the small suction opening 41, and the distal end of the etiquette brushes 61B and 62B positioned closely to the large suction opening 42 are turned toward the large suction opening 42. COPYRIGHT: (C)2003,JPO
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