Electrically operated steering shaft lock device
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United States of America Patent
Stats
-
May 10, 2005
Grant Date -
Apr 15, 2004
app pub date -
Oct 7, 2003
filing date -
Oct 10, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electrically-operated steering lock device is capable of unlocking a steering shaft even when steering wheel torque is applied to the steering shaft. The electrically-operated steering lock device comprises a lock bolt structure for locking the steering shaft. The lock bolt structure is composed of a first lock bolt which is pivotably held on one radial side in a neighborhood of the steering shaft and which has a protruding piece to be engaged on its inner peripheral side with a receiving portion of the steering shaft, and a second lock bolt which is pivotably held on another radial side in the neighborhood of the steering shaft. The second lock bolt is rotatable to a protruding position and a retreat position along with the first lock bolt, and has a protruding piece to be engaged on its inner peripheral side with the receiving portion of the steering shaft. The protruding pieces of the lock bolts are each moved in a direction away from respective engaging surfaces of the receiving portion of the steering shaft when engagement is to be released.
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