Safe gear box for electrical steering column lock
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United States of America Patent
Stats
-
Dec 28, 2010
Grant Date -
Jan 8, 2009
app pub date -
Nov 2, 2005
filing date -
Nov 5, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
A steering lock for locking the steering spindle of a motor vehicle steering system including a blocking element that pivots along a longitudinal axis from a locking to an unlocking position using an electromechanical drive and is maintained in the unlocking position by a spring-loaded lever. In order to enable the lever to maintain the blocking element in the unlocking position when a worm drive generates the displacement of the blocking element, a worm gear representing a first control contour is used. A first cam for pivoting the blocking element to the unlocking position and a second cam for actuating the lever are mounted on the worm gear. Prior to the pivoting of the blocking element from the unlocking to the locking position, the lever is pivoted from a rest into a release position and, only afterwards, the worm gear enables the blocking element to pivot to the locking position.
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