| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem wherein degradation in the reliability of a lateral electric motor for driving a suction nozzle due to the generation of run-on resistance, when a brush passes through a filter frame when using a suction method by the brush and the suction nozzle serving as an automatic cleaning device for reducing time and labor for the maintenance of an air filter. SOLUTION: By having the bars of the air filter arranged obliquely (1a), the run-on resistance of the brush 15 and the bars 1a of the filter frame are kept constant, and the reliability of the lateral driving electric motor 16 can thereby be improved. COPYRIGHT: (C)2009,JPO&INPIT |
