| 摘要 |
PROBLEM TO BE SOLVED: To provide a fan rotation control device capable of reducing size and weight. SOLUTION: A pressure-resistance value conversion mechanism 25A operating a movable terminal 253c with enlarging displacement of a displacement member by an enlarging mechanism 525 and changing resistance value of a potentiometer, and a control circuit adjusting electric power supplied to the motor for rotating the fan by electrical signal according to the resistance value and controlling rotation speed of a motor for rotating a fan, are stored in a case. A first turning lever 521 of the enlarging mechanism is turned with corresponding to displacement of the displacement member abutting on a rotation center side. A second turning lever 522 is turned by displacement of a free end part of the first rotation lever abutting on the turning center side to operate the movable terminal provided on the free end part. An abutting surface 521c1 of the first turning lever is inclined forming acute angle with respect to an axis perpendicularly crossing a lever shaft passing on the turning center of the first turning lever, and an abutting surface 522d1 of the second turning lever is an arc shape. COPYRIGHT: (C)2008,JPO&INPIT
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