Electric power steering apparatus

Details Electric power steering apparatus Electric power steering apparatus

2006-04-04

2006-04-04

Winner, Tony (Department: 3611)

Motor vehicles

Steering gear

With electric power assist

C310S089000, C310S06800R

Reexamination Certificate

active

07021418

ABSTRACT:
An electric power steering apparatus can improve heat dissipation of a power board. A heat sink is mounted on the power board in surface contact therewith, on which power board there is mounted a bridge circuit including a plurality of semiconductor switching elements for switching an electric current supplied to an electric motor in accordance with torque assisting a steering wheel. The heat sink has a plurality of protrusions formed on a surface thereof at a side opposite to the power board.

REFERENCES:
patent: 6078155 (2000-06-01), Tominaga et al.
patent: 6107716 (2000-08-01), Penketh
patent: 6123167 (2000-09-01), Miller et al.
patent: 6577030 (2003-06-01), Tominaga et al.
patent: 6695091 (2004-02-01), Achenbach et al.
patent: 6707185 (2004-03-01), Akutsu et al.
patent: 2002/0118511 (2002-08-01), Dujari et al.
patent: 2000-500102 (2000-01-01), None
patent: 2001-127921 (2002-05-01), None

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