Motor-driven steering lock apparatus
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United States of America Patent
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N/A
Issued Date -
Oct 22, 2009
app pub date -
Apr 17, 2009
filing date -
Apr 18, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention generally makes an actuation sound small with a simple structure without utilizing any motor-driven power steering apparatus, prevents an actuation torque down at a time of a continuous actuation by restricting a heat generation of an electric motor, and securely drives in an unlocking manner at a time of a rest steering. The invention is provided with an unlock detecting unit detecting a fact that a steering wheel is unlocked, and a power source control unit controlling a drive power source of an electric motor. The power source control unit controls the drive power source of the electric motor to a first voltage which is lower than a maximum supply voltage of a vehicle power source at a time of unlocking the steering wheel, and controls the drive power source of the electric motor to a second voltage which is larger than the first voltage at a time when the unlock detecting unit does not detect the unlock even by controlling to the first voltage.
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