Webbing take-up device
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United States of America Patent
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Jun 30, 2015
Grant Date -
May 23, 2013
app pub date -
Nov 20, 2012
filing date -
Nov 21, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
An acceleration sensor of a webbing take-up device is provided with a sensor housing in which a spherical body is placed. A rotating shaft is formed at a longitudinal wall of a support wall of the sensor housing, and rotatably supported at a shaft receiving hole formed in a hanger support wall. A position of formation of the rotating shaft is set to be upward relative to a center of gravity of the sensor housing whose state where a sensor lever is installed at the support wall and the spherical body is placed on a curved-surface of a placing portion. Consequently, even without a heavy body being attached at the lower side of the spherical body or the lower side of the sensor housing, the sensor housing rotates responsively when the take-up device main body is tilted. Therefore, the acceleration sensor can be reduced in size.
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