Rotation angle sensor
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United States of America Patent
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Oct 11, 2011
Grant Date -
Jun 23, 2011
app pub date -
Sep 22, 2008
filing date -
Sep 5, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A rotation angle sensor has a moveable sleeve (1) coupled with a rotating shaft, and a box (3) connected with the movable sleeve (1) rotatablely. An upper part of the moveable sleeve is equipped with a threaded ring (5). An inner side of the threaded ring (5) is equipped with a locking mechanism (6) which is matched with the rotating shaft tightly. The periphery of the threaded ring (5) is screwed with a fixed ring (7). The movable sleeve (1), the threaded ring (5) and the fixed ring (7) are all coaxial detachable ring structure comprising two or more arc modules. Teeth are distributed on an outer edge of the movable sleeve (1) along the circumferential direction. A reduction gear, which is engaged with the teeth and provided with multiple gears sets, is installed in the box (3). The reduction gear is fixed on a circuit board module, and a sensor module is fixed on the periphery of the reduction gear.
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