| 摘要 |
PROBLEM TO BE SOLVED: To provide a louver structure capable of preventing the generation of noise.SOLUTION: If an operation knob 15 is rotated about a first shaft core O1 integrally with a first fin 11, the first fin 11 is interlocking-rotated about the first shaft core O1, and if the operation knob 15 is slid to the first fin 11, one second fin 12 is interlocking-rotated around a second shaft core 02, and second fins 12 other than the one second fin 12 are interlocking-rotated around the second shaft core 02. Arm portions 16A and 16B are formed in a generally semicircular shape projecting in a direction corresponding to a shaft core direction J of an engaging shaft 13. A constriction 20 is provided at an intermediate portion in a longitudinal direction of the engaging shaft 13, and curved surfaces of outer peripheral surfaces having generally semicircular cross sections of the arm portions 16A and 16B engaged with and abut on the constriction 20. |
