FREE HINGE DRIVE SYSTEM FOR LINK OF VEHICLE SEAT
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United States of America Patent
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Issued Date -
Aug 22, 2024
app pub date -
Oct 17, 2023
filing date -
Feb 22, 2023
priority date (Note) -
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Abstract
A free hinge drive system for a link of a vehicle seat such as a relaxation seat includes a first pinion gear of a motor and a second pinion gear of a brake device that are connected by an interconnection member, and a first sector gear gear-coupled to a first pinion gear and a second sector gear gear-coupled to a second pinion gear have symmetric shapes. In operation, a free hinge of the link is rotated by release of a braking force of the brake device during a relaxation operation, and the free hinge of the link is restrained by a braking force when the relaxation operation is not performed, thereby preventing lift of a second front height link corresponding to another side output (outer side) in the event of a rear collision, improving passenger safety, and minimizing forward and rearward movements of the vehicle seat.
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