Electric power steering device having a fail-safe relay

Details Electric power steering device having a fail-safe relay Electric power steering device having a fail-safe relay

1989-04-06

1991-06-25

Chin, Gary

Boots, shoes, and leggings

180 791, 180142, B62D 504

Patent

active

050272764

ABSTRACT:
An electric power steering device is disclosed which comprises a fail-safe relay. The circuitry for operating the relay comprises the following: the neutral region detector circuit which generates an output when the steering torque applied by the operator is in the neutral region; a motor current detector circuit for detecting the motor current; an AND gate having inputs coupled to the above two circuits; a self-hold circuit for holding the output of the AND gate; and a relay interrupting circuit for interrupting the relay in response to the output of the self-hold circuit. Thus, the fail-safe relay is interrupted to disconnect the battery from the motor and clutch when the motor is energized in spite of the fact that the steering torque by the operator of the vehicle is in the neutral region.

REFERENCES:
patent: 4573545 (1986-03-01), Kalns
patent: 4621327 (1986-11-01), Dolph et al.
patent: 4660671 (1987-04-01), Behr et al.
patent: 4666013 (1987-05-01), Shibahata et al.
patent: 4736810 (1988-04-01), Morishita et al.
patent: 4754828 (1988-07-01), Morishita et al.
patent: 4765426 (1988-08-01), Shimizu
patent: 4802543 (1989-02-01), Ishikura et al.
patent: 4837690 (1989-06-01), Morishita et al.
patent: 4862366 (1989-08-01), Morishita et al.
patent: 4869333 (1989-09-01), Morishita et al.
patent: 4869334 (1989-09-01), Marumoto et al.

Affiliated with

Also associated with

Rating

Electric power steering device having a fail-safe relay does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electric power steering device having a fail-safe relay, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electric power steering device having a fail-safe relay will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1045135