Torque detection device
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United States of America Patent
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Jan 15, 2019
Grant Date -
May 3, 2018
app pub date -
Apr 22, 2016
filing date -
Apr 27, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
A torque detection device including a multipolar ring-shaped magnet fixed to a first shaft, a yoke holder configured to be fixed to a second shaft coaxially linked to the first shaft via a torsion bar and have a cylindrical portion surrounding the magnet, a pair of magnetic yokes each having a plurality of claw portions opposing the magnet and are fixed to the yoke holder, and a sensor part that detects a difference in rotational phase between the first shaft and the second shaft, wherein the pair of magnetic yokes are each provided with a plurality of swaging pieces swaged on the cylindrical portion, the swaging piece disposed at a position that overlaps in a radial direction of the cylindrical portion a specific claw portion selected from the plurality of claw portions and being formed so as to have a smaller width than a width of the claw portion.
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