Actuator device
AssigneeNidec Powertrain Systems Corporation
InventorsHiroshi Shirai, Shun Kato
Life of this patent
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Abstract
An actuator device includes a drive assembly that is movable in a first direction, a sensor magnet that extends in the first direction that is a magnetization direction, the sensor magnet being fixed to the drive assembly, and a magnetic sensor that opposes the sensor magnet in a second direction intersecting the first direction to detect a magnetic flux of the sensor magnet. As viewed from the second direction, a width of the sensor magnet at a portion where a barycenter of the sensor magnet is positioned is wider than a width of two ends of the sensor magnet in the first direction.
Claims6
An actuator device comprising:
- a drive assembly that is movable in a first direction;
- a sensor magnet that extends in the first direction that is a magnetization direction, the sensor magnet being fixed to the drive assembly;
- and
- a magnetic sensor that opposes the sensor magnet in a second direction intersecting the first direction to detect a magnetic flux of the sensor magnet;
- wherein
- as viewed from the second direction, a width of the sensor magnet at a portion where a barycenter of the sensor magnet is positioned is wider than a width of two ends of the sensor magnet in the first direction.
Dependencies are inferred from the claim text.