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Title:
ELECTRIC STEERING LOCKING APPARATUS
Document Type and Number:
Japanese Patent JP2012086699
Kind Code:
A
Abstract:

To improve the safety against breakdown, by cutting off current flowing through a motor in the non-operation by a first switching unit to prevent the locking actuation of a locking member due to the accidental rotation of the motor when running.

An electric steering locking apparatus 10 includes: an electric motor 15; a motor driving control unit 31 that allows a locking member 13 to perform locking actuation or unlocking actuation by the electric motor 15; and a lower-level microcomputer 27 that outputs an unlocking actuation signal and a locking actuation signal to the motor driving control unit 31. The electric steering locking apparatus 10 is provided with: the first switching unit 34 that electrically connects and disconnects the motor driving control unit 31 and the electric motor 15; a checking power supply 36 that applies a predetermined voltage to the electric motor 15; a switch unit 37 that electrically connects and disconnects the checking power supply 36 and the electric motor 15; a first diagnostic unit 41 that outputs a voltage corresponding to an internal resistance of the electric motor 15; and a motor breakdown determination means (lower-level microcomputer 27) that determines a breakdown of the electric motor 15 by the voltage input from the first diagnostic unit 41.


Inventors:
KUMANO MASAKAZU
Application Number:
JP2010235781A
Publication Date:
May 10, 2012
Filing Date:
October 20, 2010
Export Citation:
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Assignee:
YUSHIN SEIKI KOGYO KK
International Classes:
B60R16/02; B60R25/0215
Domestic Patent References:
JPH10184507A1998-07-14
JP2002240655A2002-08-28
JP2005185015A2005-07-07
JP2009083661A2009-04-23
JP2005219614A2005-08-18
JP2007151300A2007-06-14
JPH10184507A1998-07-14
JP2002240655A2002-08-28
JP2005185015A2005-07-07
JP2009083661A2009-04-23
JP2008195097A2008-08-28
JP2008195098A2008-08-28
Attorney, Agent or Firm:
Hiroshi Yamazaki
Mitsuo Tanaka
Atsushi Maeda
Yoshiyuki Maebori



 
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