SEATBELT RETRACTOR
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United States of America Patent
Stats
-
N/A
Issued Date -
Mar 27, 2014
app pub date -
May 29, 2012
filing date -
May 31, 2011
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A retractor includes a windup drum that winds webbing and a pretensioner unit that causes the windup drum to rotate in a windup direction of the webbing. The pretensioner unit includes a pinion gear configured to rotate in association with the windup drum, a piston that includes a rack for meshing with the pinion gear and causes the windup drum to rotate in the windup direction through the pinion gear, a tubular cylinder that has a circular cross-section and movably holds the piston, and a drive mechanism that drives the piston. The piston further includes, on a rear surface side of the rack, a contact surface configured to come into contact with an inner wall of the cylinder, and the cylinder has such a tube length as not to expose the contact portion in a movable range of the piston.
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Family
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