Linear DC motor
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United States of America Patent
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Oct 24, 2017
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N/A
app pub date -
Jan 18, 2013
filing date -
Sep 14, 2012
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Abstract
A linear DC motor having first and second drive coils and first and second drive magnets arranged in a symmetrical state in relation to a motor central axis that passes through a sliding member in which a lens is mounted. The first and second coils on a moveable side are positioned to both the left and right sides of the sliding member. The first and second drive coils are designed to be independent without being affected by the shape, size, arrangement position, and the like of the sliding member, a linear guide, and a detection part. The first and second drive coils have high rigidity and do not deform when the sliding member slides. Accordingly, it is possible to obtain a linear DC motor that has a highly rigid moveable part and performs positioning action with high responsiveness and high precision.
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