Origin restoration mechanism for operating member and multi-direction input apparatus using the same
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United States of America Patent
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May 29, 2012
Grant Date -
Feb 22, 2007
app pub date -
Jul 13, 2006
filing date -
Aug 5, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
An origin restoration mechanism includes a base unit arranged in X-Y directions to cross the axis of an operating member body of an operating member, a link mechanism arranged on the upper surface of the base unit and a pair of urging devices for urging a rotary unit of the link mechanism. The link mechanism includes the rotary unit arranged around the axis of the operating member body and our movable members arranged equidistantly around the axis of the operating member body inside the rotary unit on the surface of the base unit and having rear ends coupled rotatably to the rotary unit. Via urging forces, the portions inside of the distal end of the four movable members come into contact with different portions, respectively, of the outer surface of the operating member body located at the original position C, to hold the operating member body.
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