| 摘要 |
PROBLEM TO BE SOLVED: To suppress the interference of a cam member with peripheral components of a case, and to improve the appearance of a wall portion of the case.SOLUTION: On a bearing portion 26 of each first wall portion 21, a pair of transmission shafts 64 inserted in fin shafts 34 at both ends of an auxiliary fin 33 and respectively provided at the fin shafts 34 is disposed on the outside of each first wall portion 21. On a bearing portion 27, a pair of transmission shafts 66 inserted in fin shafts 36 at both ends of the auxiliary fin 35 and respectively provided at the fin shafts 36 is disposed on the outside of each first wall portion 21. A pair of cam members 67 is rotatably disposed on the outside of each first wall portion 21, and the transmission shafts 64 and 66 are engaged with a pair of cam holes 69 and 70 formed on each cam member 67. The fin shafts 32 at both ends of a main fin 31 are supported on each first wall portion 21 so as to be inclined. So as to transmit the inclination of the main fin 31 to both cam member 67 to rotate, an arm 61 and a transmission shaft 62 are provided on each fin shaft 32, and the transmission shaft 62 is engaged with a long hole 68 bored on each cam member 67. |
