| 摘要 |
PROBLEM TO BE SOLVED: To provide an air passage opening/closing device structured so that a worm wheel meshing with a worm installed on the output shaft of a motor actuator is formed directly on a circular arc surface of the door body part of a wind duct opening/closing door, capable of precluding occurrence of an inconvenience resulting from attachment of foreign matter to the worm wheel. SOLUTION: The worm 29 installed on the output shaft 28 of the motor actuator 25 is meshed directly with the worm wheel 24 formed on the door body part 12a of an inner-outer air switching door 12, which is driven directly by the motor actuator 25. The output shaft 28 is furnished with a brush 34 to remove the foreign matter upon contacting with the surface of the worm wheel 24. COPYRIGHT: (C)2006,JPO&NCIPI
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