| 摘要 |
<p>PURPOSE:To increase a response speed and to eliminate an increase in size and operation sound by transmitting the turning force of one motor to two driven members and setting four kinds of operation modes with outputs of a motor rotational position detecting means and two sensors. CONSTITUTION:The motor actuator 1 is equipped with opening/closing plates 2a and 2b as the 1st and the 2nd driven members and a common motor 3 as their driving source, and opening parts 7a and 7b are energized with the opening/closing plates 2a and 2b in invariably closing directions. Further, the motor 3 is fitted to a fitting base 10 at the back surface side of a base plate 5 together with a gear box 11 and drives a switch cam through cams 12a and 12b; and this cam form the position detecting means together with a switch. Then, when a temperature detecting circuit detects temperature higher than target temperature, the motor 3 actuates itself to open the opening/closing plate 2a, taking cool air in the chamber part. The cams 12 also rotate through the rotation of the motor 3 to open only one opening/closing plate 2a. Further, the other temperature detecting circuit opens both opening/closing plates 2.</p> |
