| 摘要 |
PROBLEM TO BE SOLVED: To drive plural dampers by a single motor by driving the respective dampers so as to be opend and closed by swinging two crank members by a rotary cam. SOLUTION: A damper driving mechanism unit is provided with a base 1, two crank members 2 and 3 whose support parts are rotatably supported on this base, a disk-shaped rotary cam 4 whose shaft is rotatably supported so as to be erected on the base 1 and a motor 5 to rotate the rotary cam 4. The first crank member 2 drives a damper for a defroster. The second crank member 3 drives a damper for a vent. A cam groove engaging pin 22 of an upper side crank 2A is engaged with a cam groove 41, and a cam groove engaging pin 31 of an upper side crank 3A is engaged with the other cam groove, and when the cam groove engaging pins 22 and 31 slidingly move along the cam grooves according to rotation of the rotary cam 4, a crank angle of the upper side cranks 2A and 3A are respectively adjusted. |
