Actuator control device for automobile air conditioners
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United States of America Patent
Stats
-
Feb 15, 1994
Grant Date -
N/A
app pub date -
Feb 28, 1991
filing date -
Mar 1, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An actuator control device used for, for instance, dampers of automobile air conditioners including first and second fixed contacts which are discontinuous on a path along which a movable contact travels and third and fourth fixed contacts which are also in a discontinuous fashion on the movable contact's path. A motor, that is, an actuator, is connected to a battery and rotated forward when the movable contact is in contact with the first contact and is rotated reversely when the movable contact is in contact with the third contact, thus opening and closing the damper. A first diode is connected to the second contact so that when the damper, which is rotated in a linkage with the movable contact, is opened and the movable contact comes into contact with the second contact, the first diode cuts off the current to the motor, thus completing the damper opening action. A second diode is used so that when the damper is closed and the movable contact comes into contact with the fourth contact, the second diode cuts off the current to the motor, completing the closing action.
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